Changed .vin

Follow_the_line/Programs /.venv/bin/Activate.ps1

@@ -0,0 +1,247 @@
+<#
+.Synopsis
+Activate a Python virtual environment for the current PowerShell session.
+
+.Description
+Pushes the python executable for a virtual environment to the front of the
+$Env:PATH environment variable and sets the prompt to signify that you are
+in a Python virtual environment. Makes use of the command line switches as
+well as the `pyvenv.cfg` file values present in the virtual environment.
+
+.Parameter VenvDir
+Path to the directory that contains the virtual environment to activate. The
+default value for this is the parent of the directory that the Activate.ps1
+script is located within.
+
+.Parameter Prompt
+The prompt prefix to display when this virtual environment is activated. By
+default, this prompt is the name of the virtual environment folder (VenvDir)
+surrounded by parentheses and followed by a single space (ie. '(.venv) ').
+
+.Example
+Activate.ps1
+Activates the Python virtual environment that contains the Activate.ps1 script.
+
+.Example
+Activate.ps1 -Verbose
+Activates the Python virtual environment that contains the Activate.ps1 script,
+and shows extra information about the activation as it executes.
+
+.Example
+Activate.ps1 -VenvDir C:\Users\MyUser\Common\.venv
+Activates the Python virtual environment located in the specified location.
+
+.Example
+Activate.ps1 -Prompt "MyPython"
+Activates the Python virtual environment that contains the Activate.ps1 script,
+and prefixes the current prompt with the specified string (surrounded in
+parentheses) while the virtual environment is active.
+
+.Notes
+On Windows, it may be required to enable this Activate.ps1 script by setting the
+execution policy for the user. You can do this by issuing the following PowerShell
+command:
+
+PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
+
+For more information on Execution Policies: 
+https://go.microsoft.com/fwlink/?LinkID=135170
+
+#>
+Param(
+    [Parameter(Mandatory = $false)]
+    [String]
+    $VenvDir,
+    [Parameter(Mandatory = $false)]
+    [String]
+    $Prompt
+)
+
+<# Function declarations --------------------------------------------------- #>
+
+<#
+.Synopsis
+Remove all shell session elements added by the Activate script, including the
+addition of the virtual environment's Python executable from the beginning of
+the PATH variable.
+
+.Parameter NonDestructive
+If present, do not remove this function from the global namespace for the
+session.
+
+#>
+function global:deactivate ([switch]$NonDestructive) {
+    # Revert to original values
+
+    # The prior prompt:
+    if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
+        Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
+        Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
+    }
+
+    # The prior PYTHONHOME:
+    if (Test-Path -Path Env:_OLD_VIRTUAL_PYTHONHOME) {
+        Copy-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME -Destination Env:PYTHONHOME
+        Remove-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME
+    }
+
+    # The prior PATH:
+    if (Test-Path -Path Env:_OLD_VIRTUAL_PATH) {
+        Copy-Item -Path Env:_OLD_VIRTUAL_PATH -Destination Env:PATH
+        Remove-Item -Path Env:_OLD_VIRTUAL_PATH
+    }
+
+    # Just remove the VIRTUAL_ENV altogether:
+    if (Test-Path -Path Env:VIRTUAL_ENV) {
+        Remove-Item -Path env:VIRTUAL_ENV
+    }
+
+    # Just remove VIRTUAL_ENV_PROMPT altogether.
+    if (Test-Path -Path Env:VIRTUAL_ENV_PROMPT) {
+        Remove-Item -Path env:VIRTUAL_ENV_PROMPT
+    }
+
+    # Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
+    if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
+        Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
+    }
+
+    # Leave deactivate function in the global namespace if requested:
+    if (-not $NonDestructive) {
+        Remove-Item -Path function:deactivate
+    }
+}
+
+<#
+.Description
+Get-PyVenvConfig parses the values from the pyvenv.cfg file located in the
+given folder, and returns them in a map.
+
+For each line in the pyvenv.cfg file, if that line can be parsed into exactly
+two strings separated by `=` (with any amount of whitespace surrounding the =)
+then it is considered a `key = value` line. The left hand string is the key,
+the right hand is the value.
+
+If the value starts with a `'` or a `"` then the first and last character is
+stripped from the value before being captured.
+
+.Parameter ConfigDir
+Path to the directory that contains the `pyvenv.cfg` file.
+#>
+function Get-PyVenvConfig(
+    [String]
+    $ConfigDir
+) {
+    Write-Verbose "Given ConfigDir=$ConfigDir, obtain values in pyvenv.cfg"
+
+    # Ensure the file exists, and issue a warning if it doesn't (but still allow the function to continue).
+    $pyvenvConfigPath = Join-Path -Resolve -Path $ConfigDir -ChildPath 'pyvenv.cfg' -ErrorAction Continue
+
+    # An empty map will be returned if no config file is found.
+    $pyvenvConfig = @{ }
+
+    if ($pyvenvConfigPath) {
+
+        Write-Verbose "File exists, parse `key = value` lines"
+        $pyvenvConfigContent = Get-Content -Path $pyvenvConfigPath
+
+        $pyvenvConfigContent | ForEach-Object {
+            $keyval = $PSItem -split "\s*=\s*", 2
+            if ($keyval[0] -and $keyval[1]) {
+                $val = $keyval[1]
+
+                # Remove extraneous quotations around a string value.
+                if ("'""".Contains($val.Substring(0, 1))) {
+                    $val = $val.Substring(1, $val.Length - 2)
+                }
+
+                $pyvenvConfig[$keyval[0]] = $val
+                Write-Verbose "Adding Key: '$($keyval[0])'='$val'"
+            }
+        }
+    }
+    return $pyvenvConfig
+}
+
+
+<# Begin Activate script --------------------------------------------------- #>
+
+# Determine the containing directory of this script
+$VenvExecPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
+$VenvExecDir = Get-Item -Path $VenvExecPath
+
+Write-Verbose "Activation script is located in path: '$VenvExecPath'"
+Write-Verbose "VenvExecDir Fullname: '$($VenvExecDir.FullName)"
+Write-Verbose "VenvExecDir Name: '$($VenvExecDir.Name)"
+
+# Set values required in priority: CmdLine, ConfigFile, Default
+# First, get the location of the virtual environment, it might not be
+# VenvExecDir if specified on the command line.
+if ($VenvDir) {
+    Write-Verbose "VenvDir given as parameter, using '$VenvDir' to determine values"
+}
+else {
+    Write-Verbose "VenvDir not given as a parameter, using parent directory name as VenvDir."
+    $VenvDir = $VenvExecDir.Parent.FullName.TrimEnd("\\/")
+    Write-Verbose "VenvDir=$VenvDir"
+}
+
+# Next, read the `pyvenv.cfg` file to determine any required value such
+# as `prompt`.
+$pyvenvCfg = Get-PyVenvConfig -ConfigDir $VenvDir
+
+# Next, set the prompt from the command line, or the config file, or
+# just use the name of the virtual environment folder.
+if ($Prompt) {
+    Write-Verbose "Prompt specified as argument, using '$Prompt'"
+}
+else {
+    Write-Verbose "Prompt not specified as argument to script, checking pyvenv.cfg value"
+    if ($pyvenvCfg -and $pyvenvCfg['prompt']) {
+        Write-Verbose "  Setting based on value in pyvenv.cfg='$($pyvenvCfg['prompt'])'"
+        $Prompt = $pyvenvCfg['prompt'];
+    }
+    else {
+        Write-Verbose "  Setting prompt based on parent's directory's name. (Is the directory name passed to venv module when creating the virtual environment)"
+        Write-Verbose "  Got leaf-name of $VenvDir='$(Split-Path -Path $venvDir -Leaf)'"
+        $Prompt = Split-Path -Path $venvDir -Leaf
+    }
+}
+
+Write-Verbose "Prompt = '$Prompt'"
+Write-Verbose "VenvDir='$VenvDir'"
+
+# Deactivate any currently active virtual environment, but leave the
+# deactivate function in place.
+deactivate -nondestructive
+
+# Now set the environment variable VIRTUAL_ENV, used by many tools to determine
+# that there is an activated venv.
+$env:VIRTUAL_ENV = $VenvDir
+
+if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
+
+    Write-Verbose "Setting prompt to '$Prompt'"
+
+    # Set the prompt to include the env name
+    # Make sure _OLD_VIRTUAL_PROMPT is global
+    function global:_OLD_VIRTUAL_PROMPT { "" }
+    Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
+    New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value $Prompt
+
+    function global:prompt {
+        Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
+        _OLD_VIRTUAL_PROMPT
+    }
+    $env:VIRTUAL_ENV_PROMPT = $Prompt
+}
+
+# Clear PYTHONHOME
+if (Test-Path -Path Env:PYTHONHOME) {
+    Copy-Item -Path Env:PYTHONHOME -Destination Env:_OLD_VIRTUAL_PYTHONHOME
+    Remove-Item -Path Env:PYTHONHOME
+}
+
+# Add the venv to the PATH
+Copy-Item -Path Env:PATH -Destination Env:_OLD_VIRTUAL_PATH
+$Env:PATH = "$VenvExecDir$([System.IO.Path]::PathSeparator)$Env:PATH"

Follow_the_line/Programs /.venv/bin/activate

@@ -0,0 +1,69 @@
+# This file must be used with "source bin/activate" *from bash*
+# you cannot run it directly
+
+deactivate () {
+    # reset old environment variables
+    if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then
+        PATH="${_OLD_VIRTUAL_PATH:-}"
+        export PATH
+        unset _OLD_VIRTUAL_PATH
+    fi
+    if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then
+        PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}"
+        export PYTHONHOME
+        unset _OLD_VIRTUAL_PYTHONHOME
+    fi
+
+    # This should detect bash and zsh, which have a hash command that must
+    # be called to get it to forget past commands.  Without forgetting
+    # past commands the $PATH changes we made may not be respected
+    if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
+        hash -r 2> /dev/null
+    fi
+
+    if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
+        PS1="${_OLD_VIRTUAL_PS1:-}"
+        export PS1
+        unset _OLD_VIRTUAL_PS1
+    fi
+
+    unset VIRTUAL_ENV
+    unset VIRTUAL_ENV_PROMPT
+    if [ ! "${1:-}" = "nondestructive" ] ; then
+    # Self destruct!
+        unset -f deactivate
+    fi
+}
+
+# unset irrelevant variables
+deactivate nondestructive
+
+VIRTUAL_ENV="/home/cpstanja/Documents/Python_Programms/.venv"
+export VIRTUAL_ENV
+
+_OLD_VIRTUAL_PATH="$PATH"
+PATH="$VIRTUAL_ENV/bin:$PATH"
+export PATH
+
+# unset PYTHONHOME if set
+# this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
+# could use `if (set -u; : $PYTHONHOME) ;` in bash
+if [ -n "${PYTHONHOME:-}" ] ; then
+    _OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}"
+    unset PYTHONHOME
+fi
+
+if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
+    _OLD_VIRTUAL_PS1="${PS1:-}"
+    PS1="(.venv) ${PS1:-}"
+    export PS1
+    VIRTUAL_ENV_PROMPT="(.venv) "
+    export VIRTUAL_ENV_PROMPT
+fi
+
+# This should detect bash and zsh, which have a hash command that must
+# be called to get it to forget past commands.  Without forgetting
+# past commands the $PATH changes we made may not be respected
+if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
+    hash -r 2> /dev/null
+fi

Follow_the_line/Programs /.venv/bin/activate.csh

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+# This file must be used with "source bin/activate.csh" *from csh*.
+# You cannot run it directly.
+# Created by Davide Di Blasi <davidedb@gmail.com>.
+# Ported to Python 3.3 venv by Andrew Svetlov <andrew.svetlov@gmail.com>
+
+alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PATH" && unset _OLD_VIRTUAL_PATH; rehash; test $?_OLD_VIRTUAL_PROMPT != 0 && set prompt="$_OLD_VIRTUAL_PROMPT" && unset _OLD_VIRTUAL_PROMPT; unsetenv VIRTUAL_ENV; unsetenv VIRTUAL_ENV_PROMPT; test "\!:*" != "nondestructive" && unalias deactivate'
+
+# Unset irrelevant variables.
+deactivate nondestructive
+
+setenv VIRTUAL_ENV "/home/cpstanja/Documents/Python_Programms/.venv"
+
+set _OLD_VIRTUAL_PATH="$PATH"
+setenv PATH "$VIRTUAL_ENV/bin:$PATH"
+
+
+set _OLD_VIRTUAL_PROMPT="$prompt"
+
+if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
+    set prompt = "(.venv) $prompt"
+    setenv VIRTUAL_ENV_PROMPT "(.venv) "
+endif
+
+alias pydoc python -m pydoc
+
+rehash

Follow_the_line/Programs /.venv/bin/activate.fish

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+# This file must be used with "source <venv>/bin/activate.fish" *from fish*
+# (https://fishshell.com/); you cannot run it directly.
+
+function deactivate  -d "Exit virtual environment and return to normal shell environment"
+    # reset old environment variables
+    if test -n "$_OLD_VIRTUAL_PATH"
+        set -gx PATH $_OLD_VIRTUAL_PATH
+        set -e _OLD_VIRTUAL_PATH
+    end
+    if test -n "$_OLD_VIRTUAL_PYTHONHOME"
+        set -gx PYTHONHOME $_OLD_VIRTUAL_PYTHONHOME
+        set -e _OLD_VIRTUAL_PYTHONHOME
+    end
+
+    if test -n "$_OLD_FISH_PROMPT_OVERRIDE"
+        functions -e fish_prompt
+        set -e _OLD_FISH_PROMPT_OVERRIDE
+        functions -c _old_fish_prompt fish_prompt
+        functions -e _old_fish_prompt
+    end
+
+    set -e VIRTUAL_ENV
+    set -e VIRTUAL_ENV_PROMPT
+    if test "$argv[1]" != "nondestructive"
+        # Self-destruct!
+        functions -e deactivate
+    end
+end
+
+# Unset irrelevant variables.
+deactivate nondestructive
+
+set -gx VIRTUAL_ENV "/home/cpstanja/Documents/Python_Programms/.venv"
+
+set -gx _OLD_VIRTUAL_PATH $PATH
+set -gx PATH "$VIRTUAL_ENV/bin" $PATH
+
+# Unset PYTHONHOME if set.
+if set -q PYTHONHOME
+    set -gx _OLD_VIRTUAL_PYTHONHOME $PYTHONHOME
+    set -e PYTHONHOME
+end
+
+if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
+    # fish uses a function instead of an env var to generate the prompt.
+
+    # Save the current fish_prompt function as the function _old_fish_prompt.
+    functions -c fish_prompt _old_fish_prompt
+
+    # With the original prompt function renamed, we can override with our own.
+    function fish_prompt
+        # Save the return status of the last command.
+        set -l old_status $status
+
+        # Output the venv prompt; color taken from the blue of the Python logo.
+        printf "%s%s%s" (set_color 4B8BBE) "(.venv) " (set_color normal)
+
+        # Restore the return status of the previous command.
+        echo "exit $old_status" | .
+        # Output the original/"old" prompt.
+        _old_fish_prompt
+    end
+
+    set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
+    set -gx VIRTUAL_ENV_PROMPT "(.venv) "
+end

Follow_the_line/Programs /.venv/bin/pip

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+#!/home/cpstanja/Documents/Python_Programms/.venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+from pip._internal.cli.main import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

Follow_the_line/Programs /.venv/bin/pip3

@@ -0,0 +1,8 @@
+#!/home/cpstanja/Documents/Python_Programms/.venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+from pip._internal.cli.main import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

Follow_the_line/Programs /.venv/bin/pip3.10

@@ -0,0 +1,8 @@
+#!/home/cpstanja/Documents/Python_Programms/.venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+from pip._internal.cli.main import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

Follow_the_line/Programs /.venv/bin/pip3.11

@@ -0,0 +1,8 @@
+#!/home/cpstanja/Documents/Python_Programms/.venv/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+from pip._internal.cli.main import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

Follow_the_line/Programs /.venv/bin/python

@@ -0,0 +1 @@
+python3

Follow_the_line/Programs /.venv/bin/python3

@@ -0,0 +1 @@
+/usr/bin/python3

Follow_the_line/Programs /.venv/bin/python3.10

@@ -0,0 +1 @@
+python3

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/BdfFontFile.py

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+#
+# The Python Imaging Library
+# $Id$
+#
+# bitmap distribution font (bdf) file parser
+#
+# history:
+# 1996-05-16 fl   created (as bdf2pil)
+# 1997-08-25 fl   converted to FontFile driver
+# 2001-05-25 fl   removed bogus __init__ call
+# 2002-11-20 fl   robustification (from Kevin Cazabon, Dmitry Vasiliev)
+# 2003-04-22 fl   more robustification (from Graham Dumpleton)
+#
+# Copyright (c) 1997-2003 by Secret Labs AB.
+# Copyright (c) 1997-2003 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+"""
+Parse X Bitmap Distribution Format (BDF)
+"""
+
+
+from . import FontFile, Image
+
+bdf_slant = {
+    "R": "Roman",
+    "I": "Italic",
+    "O": "Oblique",
+    "RI": "Reverse Italic",
+    "RO": "Reverse Oblique",
+    "OT": "Other",
+}
+
+bdf_spacing = {"P": "Proportional", "M": "Monospaced", "C": "Cell"}
+
+
+def bdf_char(f):
+    # skip to STARTCHAR
+    while True:
+        s = f.readline()
+        if not s:
+            return None
+        if s[:9] == b"STARTCHAR":
+            break
+    id = s[9:].strip().decode("ascii")
+
+    # load symbol properties
+    props = {}
+    while True:
+        s = f.readline()
+        if not s or s[:6] == b"BITMAP":
+            break
+        i = s.find(b" ")
+        props[s[:i].decode("ascii")] = s[i + 1 : -1].decode("ascii")
+
+    # load bitmap
+    bitmap = []
+    while True:
+        s = f.readline()
+        if not s or s[:7] == b"ENDCHAR":
+            break
+        bitmap.append(s[:-1])
+    bitmap = b"".join(bitmap)
+
+    # The word BBX
+    # followed by the width in x (BBw), height in y (BBh),
+    # and x and y displacement (BBxoff0, BByoff0)
+    # of the lower left corner from the origin of the character.
+    width, height, x_disp, y_disp = [int(p) for p in props["BBX"].split()]
+
+    # The word DWIDTH
+    # followed by the width in x and y of the character in device pixels.
+    dwx, dwy = [int(p) for p in props["DWIDTH"].split()]
+
+    bbox = (
+        (dwx, dwy),
+        (x_disp, -y_disp - height, width + x_disp, -y_disp),
+        (0, 0, width, height),
+    )
+
+    try:
+        im = Image.frombytes("1", (width, height), bitmap, "hex", "1")
+    except ValueError:
+        # deal with zero-width characters
+        im = Image.new("1", (width, height))
+
+    return id, int(props["ENCODING"]), bbox, im
+
+
+class BdfFontFile(FontFile.FontFile):
+    """Font file plugin for the X11 BDF format."""
+
+    def __init__(self, fp):
+        super().__init__()
+
+        s = fp.readline()
+        if s[:13] != b"STARTFONT 2.1":
+            msg = "not a valid BDF file"
+            raise SyntaxError(msg)
+
+        props = {}
+        comments = []
+
+        while True:
+            s = fp.readline()
+            if not s or s[:13] == b"ENDPROPERTIES":
+                break
+            i = s.find(b" ")
+            props[s[:i].decode("ascii")] = s[i + 1 : -1].decode("ascii")
+            if s[:i] in [b"COMMENT", b"COPYRIGHT"]:
+                if s.find(b"LogicalFontDescription") < 0:
+                    comments.append(s[i + 1 : -1].decode("ascii"))
+
+        while True:
+            c = bdf_char(fp)
+            if not c:
+                break
+            id, ch, (xy, dst, src), im = c
+            if 0 <= ch < len(self.glyph):
+                self.glyph[ch] = xy, dst, src, im

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/BlpImagePlugin.py

@@ -0,0 +1,472 @@
+"""
+Blizzard Mipmap Format (.blp)
+Jerome Leclanche <jerome@leclan.ch>
+
+The contents of this file are hereby released in the public domain (CC0)
+Full text of the CC0 license:
+  https://creativecommons.org/publicdomain/zero/1.0/
+
+BLP1 files, used mostly in Warcraft III, are not fully supported.
+All types of BLP2 files used in World of Warcraft are supported.
+
+The BLP file structure consists of a header, up to 16 mipmaps of the
+texture
+
+Texture sizes must be powers of two, though the two dimensions do
+not have to be equal; 512x256 is valid, but 512x200 is not.
+The first mipmap (mipmap #0) is the full size image; each subsequent
+mipmap halves both dimensions. The final mipmap should be 1x1.
+
+BLP files come in many different flavours:
+* JPEG-compressed (type == 0) - only supported for BLP1.
+* RAW images (type == 1, encoding == 1). Each mipmap is stored as an
+  array of 8-bit values, one per pixel, left to right, top to bottom.
+  Each value is an index to the palette.
+* DXT-compressed (type == 1, encoding == 2):
+- DXT1 compression is used if alpha_encoding == 0.
+  - An additional alpha bit is used if alpha_depth == 1.
+  - DXT3 compression is used if alpha_encoding == 1.
+  - DXT5 compression is used if alpha_encoding == 7.
+"""
+
+import os
+import struct
+from enum import IntEnum
+from io import BytesIO
+
+from . import Image, ImageFile
+
+
+class Format(IntEnum):
+    JPEG = 0
+
+
+class Encoding(IntEnum):
+    UNCOMPRESSED = 1
+    DXT = 2
+    UNCOMPRESSED_RAW_BGRA = 3
+
+
+class AlphaEncoding(IntEnum):
+    DXT1 = 0
+    DXT3 = 1
+    DXT5 = 7
+
+
+def unpack_565(i):
+    return ((i >> 11) & 0x1F) << 3, ((i >> 5) & 0x3F) << 2, (i & 0x1F) << 3
+
+
+def decode_dxt1(data, alpha=False):
+    """
+    input: one "row" of data (i.e. will produce 4*width pixels)
+    """
+
+    blocks = len(data) // 8  # number of blocks in row
+    ret = (bytearray(), bytearray(), bytearray(), bytearray())
+
+    for block in range(blocks):
+        # Decode next 8-byte block.
+        idx = block * 8
+        color0, color1, bits = struct.unpack_from("<HHI", data, idx)
+
+        r0, g0, b0 = unpack_565(color0)
+        r1, g1, b1 = unpack_565(color1)
+
+        # Decode this block into 4x4 pixels
+        # Accumulate the results onto our 4 row accumulators
+        for j in range(4):
+            for i in range(4):
+                # get next control op and generate a pixel
+
+                control = bits & 3
+                bits = bits >> 2
+
+                a = 0xFF
+                if control == 0:
+                    r, g, b = r0, g0, b0
+                elif control == 1:
+                    r, g, b = r1, g1, b1
+                elif control == 2:
+                    if color0 > color1:
+                        r = (2 * r0 + r1) // 3
+                        g = (2 * g0 + g1) // 3
+                        b = (2 * b0 + b1) // 3
+                    else:
+                        r = (r0 + r1) // 2
+                        g = (g0 + g1) // 2
+                        b = (b0 + b1) // 2
+                elif control == 3:
+                    if color0 > color1:
+                        r = (2 * r1 + r0) // 3
+                        g = (2 * g1 + g0) // 3
+                        b = (2 * b1 + b0) // 3
+                    else:
+                        r, g, b, a = 0, 0, 0, 0
+
+                if alpha:
+                    ret[j].extend([r, g, b, a])
+                else:
+                    ret[j].extend([r, g, b])
+
+    return ret
+
+
+def decode_dxt3(data):
+    """
+    input: one "row" of data (i.e. will produce 4*width pixels)
+    """
+
+    blocks = len(data) // 16  # number of blocks in row
+    ret = (bytearray(), bytearray(), bytearray(), bytearray())
+
+    for block in range(blocks):
+        idx = block * 16
+        block = data[idx : idx + 16]
+        # Decode next 16-byte block.
+        bits = struct.unpack_from("<8B", block)
+        color0, color1 = struct.unpack_from("<HH", block, 8)
+
+        (code,) = struct.unpack_from("<I", block, 12)
+
+        r0, g0, b0 = unpack_565(color0)
+        r1, g1, b1 = unpack_565(color1)
+
+        for j in range(4):
+            high = False  # Do we want the higher bits?
+            for i in range(4):
+                alphacode_index = (4 * j + i) // 2
+                a = bits[alphacode_index]
+                if high:
+                    high = False
+                    a >>= 4
+                else:
+                    high = True
+                    a &= 0xF
+                a *= 17  # We get a value between 0 and 15
+
+                color_code = (code >> 2 * (4 * j + i)) & 0x03
+
+                if color_code == 0:
+                    r, g, b = r0, g0, b0
+                elif color_code == 1:
+                    r, g, b = r1, g1, b1
+                elif color_code == 2:
+                    r = (2 * r0 + r1) // 3
+                    g = (2 * g0 + g1) // 3
+                    b = (2 * b0 + b1) // 3
+                elif color_code == 3:
+                    r = (2 * r1 + r0) // 3
+                    g = (2 * g1 + g0) // 3
+                    b = (2 * b1 + b0) // 3
+
+                ret[j].extend([r, g, b, a])
+
+    return ret
+
+
+def decode_dxt5(data):
+    """
+    input: one "row" of data (i.e. will produce 4 * width pixels)
+    """
+
+    blocks = len(data) // 16  # number of blocks in row
+    ret = (bytearray(), bytearray(), bytearray(), bytearray())
+
+    for block in range(blocks):
+        idx = block * 16
+        block = data[idx : idx + 16]
+        # Decode next 16-byte block.
+        a0, a1 = struct.unpack_from("<BB", block)
+
+        bits = struct.unpack_from("<6B", block, 2)
+        alphacode1 = bits[2] | (bits[3] << 8) | (bits[4] << 16) | (bits[5] << 24)
+        alphacode2 = bits[0] | (bits[1] << 8)
+
+        color0, color1 = struct.unpack_from("<HH", block, 8)
+
+        (code,) = struct.unpack_from("<I", block, 12)
+
+        r0, g0, b0 = unpack_565(color0)
+        r1, g1, b1 = unpack_565(color1)
+
+        for j in range(4):
+            for i in range(4):
+                # get next control op and generate a pixel
+                alphacode_index = 3 * (4 * j + i)
+
+                if alphacode_index <= 12:
+                    alphacode = (alphacode2 >> alphacode_index) & 0x07
+                elif alphacode_index == 15:
+                    alphacode = (alphacode2 >> 15) | ((alphacode1 << 1) & 0x06)
+                else:  # alphacode_index >= 18 and alphacode_index <= 45
+                    alphacode = (alphacode1 >> (alphacode_index - 16)) & 0x07
+
+                if alphacode == 0:
+                    a = a0
+                elif alphacode == 1:
+                    a = a1
+                elif a0 > a1:
+                    a = ((8 - alphacode) * a0 + (alphacode - 1) * a1) // 7
+                elif alphacode == 6:
+                    a = 0
+                elif alphacode == 7:
+                    a = 255
+                else:
+                    a = ((6 - alphacode) * a0 + (alphacode - 1) * a1) // 5
+
+                color_code = (code >> 2 * (4 * j + i)) & 0x03
+
+                if color_code == 0:
+                    r, g, b = r0, g0, b0
+                elif color_code == 1:
+                    r, g, b = r1, g1, b1
+                elif color_code == 2:
+                    r = (2 * r0 + r1) // 3
+                    g = (2 * g0 + g1) // 3
+                    b = (2 * b0 + b1) // 3
+                elif color_code == 3:
+                    r = (2 * r1 + r0) // 3
+                    g = (2 * g1 + g0) // 3
+                    b = (2 * b1 + b0) // 3
+
+                ret[j].extend([r, g, b, a])
+
+    return ret
+
+
+class BLPFormatError(NotImplementedError):
+    pass
+
+
+def _accept(prefix):
+    return prefix[:4] in (b"BLP1", b"BLP2")
+
+
+class BlpImageFile(ImageFile.ImageFile):
+    """
+    Blizzard Mipmap Format
+    """
+
+    format = "BLP"
+    format_description = "Blizzard Mipmap Format"
+
+    def _open(self):
+        self.magic = self.fp.read(4)
+
+        self.fp.seek(5, os.SEEK_CUR)
+        (self._blp_alpha_depth,) = struct.unpack("<b", self.fp.read(1))
+
+        self.fp.seek(2, os.SEEK_CUR)
+        self._size = struct.unpack("<II", self.fp.read(8))
+
+        if self.magic in (b"BLP1", b"BLP2"):
+            decoder = self.magic.decode()
+        else:
+            msg = f"Bad BLP magic {repr(self.magic)}"
+            raise BLPFormatError(msg)
+
+        self.mode = "RGBA" if self._blp_alpha_depth else "RGB"
+        self.tile = [(decoder, (0, 0) + self.size, 0, (self.mode, 0, 1))]
+
+
+class _BLPBaseDecoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def decode(self, buffer):
+        try:
+            self._read_blp_header()
+            self._load()
+        except struct.error as e:
+            msg = "Truncated BLP file"
+            raise OSError(msg) from e
+        return -1, 0
+
+    def _read_blp_header(self):
+        self.fd.seek(4)
+        (self._blp_compression,) = struct.unpack("<i", self._safe_read(4))
+
+        (self._blp_encoding,) = struct.unpack("<b", self._safe_read(1))
+        (self._blp_alpha_depth,) = struct.unpack("<b", self._safe_read(1))
+        (self._blp_alpha_encoding,) = struct.unpack("<b", self._safe_read(1))
+        self.fd.seek(1, os.SEEK_CUR)  # mips
+
+        self.size = struct.unpack("<II", self._safe_read(8))
+
+        if isinstance(self, BLP1Decoder):
+            # Only present for BLP1
+            (self._blp_encoding,) = struct.unpack("<i", self._safe_read(4))
+            self.fd.seek(4, os.SEEK_CUR)  # subtype
+
+        self._blp_offsets = struct.unpack("<16I", self._safe_read(16 * 4))
+        self._blp_lengths = struct.unpack("<16I", self._safe_read(16 * 4))
+
+    def _safe_read(self, length):
+        return ImageFile._safe_read(self.fd, length)
+
+    def _read_palette(self):
+        ret = []
+        for i in range(256):
+            try:
+                b, g, r, a = struct.unpack("<4B", self._safe_read(4))
+            except struct.error:
+                break
+            ret.append((b, g, r, a))
+        return ret
+
+    def _read_bgra(self, palette):
+        data = bytearray()
+        _data = BytesIO(self._safe_read(self._blp_lengths[0]))
+        while True:
+            try:
+                (offset,) = struct.unpack("<B", _data.read(1))
+            except struct.error:
+                break
+            b, g, r, a = palette[offset]
+            d = (r, g, b)
+            if self._blp_alpha_depth:
+                d += (a,)
+            data.extend(d)
+        return data
+
+
+class BLP1Decoder(_BLPBaseDecoder):
+    def _load(self):
+        if self._blp_compression == Format.JPEG:
+            self._decode_jpeg_stream()
+
+        elif self._blp_compression == 1:
+            if self._blp_encoding in (4, 5):
+                palette = self._read_palette()
+                data = self._read_bgra(palette)
+                self.set_as_raw(bytes(data))
+            else:
+                msg = f"Unsupported BLP encoding {repr(self._blp_encoding)}"
+                raise BLPFormatError(msg)
+        else:
+            msg = f"Unsupported BLP compression {repr(self._blp_encoding)}"
+            raise BLPFormatError(msg)
+
+    def _decode_jpeg_stream(self):
+        from .JpegImagePlugin import JpegImageFile
+
+        (jpeg_header_size,) = struct.unpack("<I", self._safe_read(4))
+        jpeg_header = self._safe_read(jpeg_header_size)
+        self._safe_read(self._blp_offsets[0] - self.fd.tell())  # What IS this?
+        data = self._safe_read(self._blp_lengths[0])
+        data = jpeg_header + data
+        data = BytesIO(data)
+        image = JpegImageFile(data)
+        Image._decompression_bomb_check(image.size)
+        if image.mode == "CMYK":
+            decoder_name, extents, offset, args = image.tile[0]
+            image.tile = [(decoder_name, extents, offset, (args[0], "CMYK"))]
+        r, g, b = image.convert("RGB").split()
+        image = Image.merge("RGB", (b, g, r))
+        self.set_as_raw(image.tobytes())
+
+
+class BLP2Decoder(_BLPBaseDecoder):
+    def _load(self):
+        palette = self._read_palette()
+
+        self.fd.seek(self._blp_offsets[0])
+
+        if self._blp_compression == 1:
+            # Uncompressed or DirectX compression
+
+            if self._blp_encoding == Encoding.UNCOMPRESSED:
+                data = self._read_bgra(palette)
+
+            elif self._blp_encoding == Encoding.DXT:
+                data = bytearray()
+                if self._blp_alpha_encoding == AlphaEncoding.DXT1:
+                    linesize = (self.size[0] + 3) // 4 * 8
+                    for yb in range((self.size[1] + 3) // 4):
+                        for d in decode_dxt1(
+                            self._safe_read(linesize), alpha=bool(self._blp_alpha_depth)
+                        ):
+                            data += d
+
+                elif self._blp_alpha_encoding == AlphaEncoding.DXT3:
+                    linesize = (self.size[0] + 3) // 4 * 16
+                    for yb in range((self.size[1] + 3) // 4):
+                        for d in decode_dxt3(self._safe_read(linesize)):
+                            data += d
+
+                elif self._blp_alpha_encoding == AlphaEncoding.DXT5:
+                    linesize = (self.size[0] + 3) // 4 * 16
+                    for yb in range((self.size[1] + 3) // 4):
+                        for d in decode_dxt5(self._safe_read(linesize)):
+                            data += d
+                else:
+                    msg = f"Unsupported alpha encoding {repr(self._blp_alpha_encoding)}"
+                    raise BLPFormatError(msg)
+            else:
+                msg = f"Unknown BLP encoding {repr(self._blp_encoding)}"
+                raise BLPFormatError(msg)
+
+        else:
+            msg = f"Unknown BLP compression {repr(self._blp_compression)}"
+            raise BLPFormatError(msg)
+
+        self.set_as_raw(bytes(data))
+
+
+class BLPEncoder(ImageFile.PyEncoder):
+    _pushes_fd = True
+
+    def _write_palette(self):
+        data = b""
+        palette = self.im.getpalette("RGBA", "RGBA")
+        for i in range(256):
+            r, g, b, a = palette[i * 4 : (i + 1) * 4]
+            data += struct.pack("<4B", b, g, r, a)
+        return data
+
+    def encode(self, bufsize):
+        palette_data = self._write_palette()
+
+        offset = 20 + 16 * 4 * 2 + len(palette_data)
+        data = struct.pack("<16I", offset, *((0,) * 15))
+
+        w, h = self.im.size
+        data += struct.pack("<16I", w * h, *((0,) * 15))
+
+        data += palette_data
+
+        for y in range(h):
+            for x in range(w):
+                data += struct.pack("<B", self.im.getpixel((x, y)))
+
+        return len(data), 0, data
+
+
+def _save(im, fp, filename, save_all=False):
+    if im.mode != "P":
+        msg = "Unsupported BLP image mode"
+        raise ValueError(msg)
+
+    magic = b"BLP1" if im.encoderinfo.get("blp_version") == "BLP1" else b"BLP2"
+    fp.write(magic)
+
+    fp.write(struct.pack("<i", 1))  # Uncompressed or DirectX compression
+    fp.write(struct.pack("<b", Encoding.UNCOMPRESSED))
+    fp.write(struct.pack("<b", 1 if im.palette.mode == "RGBA" else 0))
+    fp.write(struct.pack("<b", 0))  # alpha encoding
+    fp.write(struct.pack("<b", 0))  # mips
+    fp.write(struct.pack("<II", *im.size))
+    if magic == b"BLP1":
+        fp.write(struct.pack("<i", 5))
+        fp.write(struct.pack("<i", 0))
+
+    ImageFile._save(im, fp, [("BLP", (0, 0) + im.size, 0, im.mode)])
+
+
+Image.register_open(BlpImageFile.format, BlpImageFile, _accept)
+Image.register_extension(BlpImageFile.format, ".blp")
+Image.register_decoder("BLP1", BLP1Decoder)
+Image.register_decoder("BLP2", BLP2Decoder)
+
+Image.register_save(BlpImageFile.format, _save)
+Image.register_encoder("BLP", BLPEncoder)

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/BmpImagePlugin.py

@@ -0,0 +1,471 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# BMP file handler
+#
+# Windows (and OS/2) native bitmap storage format.
+#
+# history:
+# 1995-09-01 fl   Created
+# 1996-04-30 fl   Added save
+# 1997-08-27 fl   Fixed save of 1-bit images
+# 1998-03-06 fl   Load P images as L where possible
+# 1998-07-03 fl   Load P images as 1 where possible
+# 1998-12-29 fl   Handle small palettes
+# 2002-12-30 fl   Fixed load of 1-bit palette images
+# 2003-04-21 fl   Fixed load of 1-bit monochrome images
+# 2003-04-23 fl   Added limited support for BI_BITFIELDS compression
+#
+# Copyright (c) 1997-2003 by Secret Labs AB
+# Copyright (c) 1995-2003 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+import os
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import i16le as i16
+from ._binary import i32le as i32
+from ._binary import o8
+from ._binary import o16le as o16
+from ._binary import o32le as o32
+
+#
+# --------------------------------------------------------------------
+# Read BMP file
+
+BIT2MODE = {
+    # bits => mode, rawmode
+    1: ("P", "P;1"),
+    4: ("P", "P;4"),
+    8: ("P", "P"),
+    16: ("RGB", "BGR;15"),
+    24: ("RGB", "BGR"),
+    32: ("RGB", "BGRX"),
+}
+
+
+def _accept(prefix):
+    return prefix[:2] == b"BM"
+
+
+def _dib_accept(prefix):
+    return i32(prefix) in [12, 40, 64, 108, 124]
+
+
+# =============================================================================
+# Image plugin for the Windows BMP format.
+# =============================================================================
+class BmpImageFile(ImageFile.ImageFile):
+    """Image plugin for the Windows Bitmap format (BMP)"""
+
+    # ------------------------------------------------------------- Description
+    format_description = "Windows Bitmap"
+    format = "BMP"
+
+    # -------------------------------------------------- BMP Compression values
+    COMPRESSIONS = {"RAW": 0, "RLE8": 1, "RLE4": 2, "BITFIELDS": 3, "JPEG": 4, "PNG": 5}
+    for k, v in COMPRESSIONS.items():
+        vars()[k] = v
+
+    def _bitmap(self, header=0, offset=0):
+        """Read relevant info about the BMP"""
+        read, seek = self.fp.read, self.fp.seek
+        if header:
+            seek(header)
+        # read bmp header size @offset 14 (this is part of the header size)
+        file_info = {"header_size": i32(read(4)), "direction": -1}
+
+        # -------------------- If requested, read header at a specific position
+        # read the rest of the bmp header, without its size
+        header_data = ImageFile._safe_read(self.fp, file_info["header_size"] - 4)
+
+        # -------------------------------------------------- IBM OS/2 Bitmap v1
+        # ----- This format has different offsets because of width/height types
+        if file_info["header_size"] == 12:
+            file_info["width"] = i16(header_data, 0)
+            file_info["height"] = i16(header_data, 2)
+            file_info["planes"] = i16(header_data, 4)
+            file_info["bits"] = i16(header_data, 6)
+            file_info["compression"] = self.RAW
+            file_info["palette_padding"] = 3
+
+        # --------------------------------------------- Windows Bitmap v2 to v5
+        # v3, OS/2 v2, v4, v5
+        elif file_info["header_size"] in (40, 64, 108, 124):
+            file_info["y_flip"] = header_data[7] == 0xFF
+            file_info["direction"] = 1 if file_info["y_flip"] else -1
+            file_info["width"] = i32(header_data, 0)
+            file_info["height"] = (
+                i32(header_data, 4)
+                if not file_info["y_flip"]
+                else 2**32 - i32(header_data, 4)
+            )
+            file_info["planes"] = i16(header_data, 8)
+            file_info["bits"] = i16(header_data, 10)
+            file_info["compression"] = i32(header_data, 12)
+            # byte size of pixel data
+            file_info["data_size"] = i32(header_data, 16)
+            file_info["pixels_per_meter"] = (
+                i32(header_data, 20),
+                i32(header_data, 24),
+            )
+            file_info["colors"] = i32(header_data, 28)
+            file_info["palette_padding"] = 4
+            self.info["dpi"] = tuple(x / 39.3701 for x in file_info["pixels_per_meter"])
+            if file_info["compression"] == self.BITFIELDS:
+                if len(header_data) >= 52:
+                    for idx, mask in enumerate(
+                        ["r_mask", "g_mask", "b_mask", "a_mask"]
+                    ):
+                        file_info[mask] = i32(header_data, 36 + idx * 4)
+                else:
+                    # 40 byte headers only have the three components in the
+                    # bitfields masks, ref:
+                    # https://msdn.microsoft.com/en-us/library/windows/desktop/dd183376(v=vs.85).aspx
+                    # See also
+                    # https://github.com/python-pillow/Pillow/issues/1293
+                    # There is a 4th component in the RGBQuad, in the alpha
+                    # location, but it is listed as a reserved component,
+                    # and it is not generally an alpha channel
+                    file_info["a_mask"] = 0x0
+                    for mask in ["r_mask", "g_mask", "b_mask"]:
+                        file_info[mask] = i32(read(4))
+                file_info["rgb_mask"] = (
+                    file_info["r_mask"],
+                    file_info["g_mask"],
+                    file_info["b_mask"],
+                )
+                file_info["rgba_mask"] = (
+                    file_info["r_mask"],
+                    file_info["g_mask"],
+                    file_info["b_mask"],
+                    file_info["a_mask"],
+                )
+        else:
+            msg = f"Unsupported BMP header type ({file_info['header_size']})"
+            raise OSError(msg)
+
+        # ------------------ Special case : header is reported 40, which
+        # ---------------------- is shorter than real size for bpp >= 16
+        self._size = file_info["width"], file_info["height"]
+
+        # ------- If color count was not found in the header, compute from bits
+        file_info["colors"] = (
+            file_info["colors"]
+            if file_info.get("colors", 0)
+            else (1 << file_info["bits"])
+        )
+        if offset == 14 + file_info["header_size"] and file_info["bits"] <= 8:
+            offset += 4 * file_info["colors"]
+
+        # ---------------------- Check bit depth for unusual unsupported values
+        self.mode, raw_mode = BIT2MODE.get(file_info["bits"], (None, None))
+        if self.mode is None:
+            msg = f"Unsupported BMP pixel depth ({file_info['bits']})"
+            raise OSError(msg)
+
+        # ---------------- Process BMP with Bitfields compression (not palette)
+        decoder_name = "raw"
+        if file_info["compression"] == self.BITFIELDS:
+            SUPPORTED = {
+                32: [
+                    (0xFF0000, 0xFF00, 0xFF, 0x0),
+                    (0xFF000000, 0xFF0000, 0xFF00, 0x0),
+                    (0xFF000000, 0xFF0000, 0xFF00, 0xFF),
+                    (0xFF, 0xFF00, 0xFF0000, 0xFF000000),
+                    (0xFF0000, 0xFF00, 0xFF, 0xFF000000),
+                    (0x0, 0x0, 0x0, 0x0),
+                ],
+                24: [(0xFF0000, 0xFF00, 0xFF)],
+                16: [(0xF800, 0x7E0, 0x1F), (0x7C00, 0x3E0, 0x1F)],
+            }
+            MASK_MODES = {
+                (32, (0xFF0000, 0xFF00, 0xFF, 0x0)): "BGRX",
+                (32, (0xFF000000, 0xFF0000, 0xFF00, 0x0)): "XBGR",
+                (32, (0xFF000000, 0xFF0000, 0xFF00, 0xFF)): "ABGR",
+                (32, (0xFF, 0xFF00, 0xFF0000, 0xFF000000)): "RGBA",
+                (32, (0xFF0000, 0xFF00, 0xFF, 0xFF000000)): "BGRA",
+                (32, (0x0, 0x0, 0x0, 0x0)): "BGRA",
+                (24, (0xFF0000, 0xFF00, 0xFF)): "BGR",
+                (16, (0xF800, 0x7E0, 0x1F)): "BGR;16",
+                (16, (0x7C00, 0x3E0, 0x1F)): "BGR;15",
+            }
+            if file_info["bits"] in SUPPORTED:
+                if (
+                    file_info["bits"] == 32
+                    and file_info["rgba_mask"] in SUPPORTED[file_info["bits"]]
+                ):
+                    raw_mode = MASK_MODES[(file_info["bits"], file_info["rgba_mask"])]
+                    self.mode = "RGBA" if "A" in raw_mode else self.mode
+                elif (
+                    file_info["bits"] in (24, 16)
+                    and file_info["rgb_mask"] in SUPPORTED[file_info["bits"]]
+                ):
+                    raw_mode = MASK_MODES[(file_info["bits"], file_info["rgb_mask"])]
+                else:
+                    msg = "Unsupported BMP bitfields layout"
+                    raise OSError(msg)
+            else:
+                msg = "Unsupported BMP bitfields layout"
+                raise OSError(msg)
+        elif file_info["compression"] == self.RAW:
+            if file_info["bits"] == 32 and header == 22:  # 32-bit .cur offset
+                raw_mode, self.mode = "BGRA", "RGBA"
+        elif file_info["compression"] in (self.RLE8, self.RLE4):
+            decoder_name = "bmp_rle"
+        else:
+            msg = f"Unsupported BMP compression ({file_info['compression']})"
+            raise OSError(msg)
+
+        # --------------- Once the header is processed, process the palette/LUT
+        if self.mode == "P":  # Paletted for 1, 4 and 8 bit images
+            # ---------------------------------------------------- 1-bit images
+            if not (0 < file_info["colors"] <= 65536):
+                msg = f"Unsupported BMP Palette size ({file_info['colors']})"
+                raise OSError(msg)
+            else:
+                padding = file_info["palette_padding"]
+                palette = read(padding * file_info["colors"])
+                greyscale = True
+                indices = (
+                    (0, 255)
+                    if file_info["colors"] == 2
+                    else list(range(file_info["colors"]))
+                )
+
+                # ----------------- Check if greyscale and ignore palette if so
+                for ind, val in enumerate(indices):
+                    rgb = palette[ind * padding : ind * padding + 3]
+                    if rgb != o8(val) * 3:
+                        greyscale = False
+
+                # ------- If all colors are grey, white or black, ditch palette
+                if greyscale:
+                    self.mode = "1" if file_info["colors"] == 2 else "L"
+                    raw_mode = self.mode
+                else:
+                    self.mode = "P"
+                    self.palette = ImagePalette.raw(
+                        "BGRX" if padding == 4 else "BGR", palette
+                    )
+
+        # ---------------------------- Finally set the tile data for the plugin
+        self.info["compression"] = file_info["compression"]
+        args = [raw_mode]
+        if decoder_name == "bmp_rle":
+            args.append(file_info["compression"] == self.RLE4)
+        else:
+            args.append(((file_info["width"] * file_info["bits"] + 31) >> 3) & (~3))
+        args.append(file_info["direction"])
+        self.tile = [
+            (
+                decoder_name,
+                (0, 0, file_info["width"], file_info["height"]),
+                offset or self.fp.tell(),
+                tuple(args),
+            )
+        ]
+
+    def _open(self):
+        """Open file, check magic number and read header"""
+        # read 14 bytes: magic number, filesize, reserved, header final offset
+        head_data = self.fp.read(14)
+        # choke if the file does not have the required magic bytes
+        if not _accept(head_data):
+            msg = "Not a BMP file"
+            raise SyntaxError(msg)
+        # read the start position of the BMP image data (u32)
+        offset = i32(head_data, 10)
+        # load bitmap information (offset=raster info)
+        self._bitmap(offset=offset)
+
+
+class BmpRleDecoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def decode(self, buffer):
+        rle4 = self.args[1]
+        data = bytearray()
+        x = 0
+        while len(data) < self.state.xsize * self.state.ysize:
+            pixels = self.fd.read(1)
+            byte = self.fd.read(1)
+            if not pixels or not byte:
+                break
+            num_pixels = pixels[0]
+            if num_pixels:
+                # encoded mode
+                if x + num_pixels > self.state.xsize:
+                    # Too much data for row
+                    num_pixels = max(0, self.state.xsize - x)
+                if rle4:
+                    first_pixel = o8(byte[0] >> 4)
+                    second_pixel = o8(byte[0] & 0x0F)
+                    for index in range(num_pixels):
+                        if index % 2 == 0:
+                            data += first_pixel
+                        else:
+                            data += second_pixel
+                else:
+                    data += byte * num_pixels
+                x += num_pixels
+            else:
+                if byte[0] == 0:
+                    # end of line
+                    while len(data) % self.state.xsize != 0:
+                        data += b"\x00"
+                    x = 0
+                elif byte[0] == 1:
+                    # end of bitmap
+                    break
+                elif byte[0] == 2:
+                    # delta
+                    bytes_read = self.fd.read(2)
+                    if len(bytes_read) < 2:
+                        break
+                    right, up = self.fd.read(2)
+                    data += b"\x00" * (right + up * self.state.xsize)
+                    x = len(data) % self.state.xsize
+                else:
+                    # absolute mode
+                    if rle4:
+                        # 2 pixels per byte
+                        byte_count = byte[0] // 2
+                        bytes_read = self.fd.read(byte_count)
+                        for byte_read in bytes_read:
+                            data += o8(byte_read >> 4)
+                            data += o8(byte_read & 0x0F)
+                    else:
+                        byte_count = byte[0]
+                        bytes_read = self.fd.read(byte_count)
+                        data += bytes_read
+                    if len(bytes_read) < byte_count:
+                        break
+                    x += byte[0]
+
+                    # align to 16-bit word boundary
+                    if self.fd.tell() % 2 != 0:
+                        self.fd.seek(1, os.SEEK_CUR)
+        rawmode = "L" if self.mode == "L" else "P"
+        self.set_as_raw(bytes(data), (rawmode, 0, self.args[-1]))
+        return -1, 0
+
+
+# =============================================================================
+# Image plugin for the DIB format (BMP alias)
+# =============================================================================
+class DibImageFile(BmpImageFile):
+    format = "DIB"
+    format_description = "Windows Bitmap"
+
+    def _open(self):
+        self._bitmap()
+
+
+#
+# --------------------------------------------------------------------
+# Write BMP file
+
+
+SAVE = {
+    "1": ("1", 1, 2),
+    "L": ("L", 8, 256),
+    "P": ("P", 8, 256),
+    "RGB": ("BGR", 24, 0),
+    "RGBA": ("BGRA", 32, 0),
+}
+
+
+def _dib_save(im, fp, filename):
+    _save(im, fp, filename, False)
+
+
+def _save(im, fp, filename, bitmap_header=True):
+    try:
+        rawmode, bits, colors = SAVE[im.mode]
+    except KeyError as e:
+        msg = f"cannot write mode {im.mode} as BMP"
+        raise OSError(msg) from e
+
+    info = im.encoderinfo
+
+    dpi = info.get("dpi", (96, 96))
+
+    # 1 meter == 39.3701 inches
+    ppm = tuple(map(lambda x: int(x * 39.3701 + 0.5), dpi))
+
+    stride = ((im.size[0] * bits + 7) // 8 + 3) & (~3)
+    header = 40  # or 64 for OS/2 version 2
+    image = stride * im.size[1]
+
+    if im.mode == "1":
+        palette = b"".join(o8(i) * 4 for i in (0, 255))
+    elif im.mode == "L":
+        palette = b"".join(o8(i) * 4 for i in range(256))
+    elif im.mode == "P":
+        palette = im.im.getpalette("RGB", "BGRX")
+        colors = len(palette) // 4
+    else:
+        palette = None
+
+    # bitmap header
+    if bitmap_header:
+        offset = 14 + header + colors * 4
+        file_size = offset + image
+        if file_size > 2**32 - 1:
+            msg = "File size is too large for the BMP format"
+            raise ValueError(msg)
+        fp.write(
+            b"BM"  # file type (magic)
+            + o32(file_size)  # file size
+            + o32(0)  # reserved
+            + o32(offset)  # image data offset
+        )
+
+    # bitmap info header
+    fp.write(
+        o32(header)  # info header size
+        + o32(im.size[0])  # width
+        + o32(im.size[1])  # height
+        + o16(1)  # planes
+        + o16(bits)  # depth
+        + o32(0)  # compression (0=uncompressed)
+        + o32(image)  # size of bitmap
+        + o32(ppm[0])  # resolution
+        + o32(ppm[1])  # resolution
+        + o32(colors)  # colors used
+        + o32(colors)  # colors important
+    )
+
+    fp.write(b"\0" * (header - 40))  # padding (for OS/2 format)
+
+    if palette:
+        fp.write(palette)
+
+    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, stride, -1))])
+
+
+#
+# --------------------------------------------------------------------
+# Registry
+
+
+Image.register_open(BmpImageFile.format, BmpImageFile, _accept)
+Image.register_save(BmpImageFile.format, _save)
+
+Image.register_extension(BmpImageFile.format, ".bmp")
+
+Image.register_mime(BmpImageFile.format, "image/bmp")
+
+Image.register_decoder("bmp_rle", BmpRleDecoder)
+
+Image.register_open(DibImageFile.format, DibImageFile, _dib_accept)
+Image.register_save(DibImageFile.format, _dib_save)
+
+Image.register_extension(DibImageFile.format, ".dib")
+
+Image.register_mime(DibImageFile.format, "image/bmp")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/BufrStubImagePlugin.py

@@ -0,0 +1,73 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# BUFR stub adapter
+#
+# Copyright (c) 1996-2003 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+from . import Image, ImageFile
+
+_handler = None
+
+
+def register_handler(handler):
+    """
+    Install application-specific BUFR image handler.
+
+    :param handler: Handler object.
+    """
+    global _handler
+    _handler = handler
+
+
+# --------------------------------------------------------------------
+# Image adapter
+
+
+def _accept(prefix):
+    return prefix[:4] == b"BUFR" or prefix[:4] == b"ZCZC"
+
+
+class BufrStubImageFile(ImageFile.StubImageFile):
+    format = "BUFR"
+    format_description = "BUFR"
+
+    def _open(self):
+        offset = self.fp.tell()
+
+        if not _accept(self.fp.read(4)):
+            msg = "Not a BUFR file"
+            raise SyntaxError(msg)
+
+        self.fp.seek(offset)
+
+        # make something up
+        self.mode = "F"
+        self._size = 1, 1
+
+        loader = self._load()
+        if loader:
+            loader.open(self)
+
+    def _load(self):
+        return _handler
+
+
+def _save(im, fp, filename):
+    if _handler is None or not hasattr(_handler, "save"):
+        msg = "BUFR save handler not installed"
+        raise OSError(msg)
+    _handler.save(im, fp, filename)
+
+
+# --------------------------------------------------------------------
+# Registry
+
+Image.register_open(BufrStubImageFile.format, BufrStubImageFile, _accept)
+Image.register_save(BufrStubImageFile.format, _save)
+
+Image.register_extension(BufrStubImageFile.format, ".bufr")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ContainerIO.py

@@ -0,0 +1,120 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# a class to read from a container file
+#
+# History:
+# 1995-06-18 fl     Created
+# 1995-09-07 fl     Added readline(), readlines()
+#
+# Copyright (c) 1997-2001 by Secret Labs AB
+# Copyright (c) 1995 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+import io
+
+
+class ContainerIO:
+    """
+    A file object that provides read access to a part of an existing
+    file (for example a TAR file).
+    """
+
+    def __init__(self, file, offset, length):
+        """
+        Create file object.
+
+        :param file: Existing file.
+        :param offset: Start of region, in bytes.
+        :param length: Size of region, in bytes.
+        """
+        self.fh = file
+        self.pos = 0
+        self.offset = offset
+        self.length = length
+        self.fh.seek(offset)
+
+    ##
+    # Always false.
+
+    def isatty(self):
+        return False
+
+    def seek(self, offset, mode=io.SEEK_SET):
+        """
+        Move file pointer.
+
+        :param offset: Offset in bytes.
+        :param mode: Starting position. Use 0 for beginning of region, 1
+           for current offset, and 2 for end of region.  You cannot move
+           the pointer outside the defined region.
+        """
+        if mode == 1:
+            self.pos = self.pos + offset
+        elif mode == 2:
+            self.pos = self.length + offset
+        else:
+            self.pos = offset
+        # clamp
+        self.pos = max(0, min(self.pos, self.length))
+        self.fh.seek(self.offset + self.pos)
+
+    def tell(self):
+        """
+        Get current file pointer.
+
+        :returns: Offset from start of region, in bytes.
+        """
+        return self.pos
+
+    def read(self, n=0):
+        """
+        Read data.
+
+        :param n: Number of bytes to read. If omitted or zero,
+            read until end of region.
+        :returns: An 8-bit string.
+        """
+        if n:
+            n = min(n, self.length - self.pos)
+        else:
+            n = self.length - self.pos
+        if not n:  # EOF
+            return b"" if "b" in self.fh.mode else ""
+        self.pos = self.pos + n
+        return self.fh.read(n)
+
+    def readline(self):
+        """
+        Read a line of text.
+
+        :returns: An 8-bit string.
+        """
+        s = b"" if "b" in self.fh.mode else ""
+        newline_character = b"\n" if "b" in self.fh.mode else "\n"
+        while True:
+            c = self.read(1)
+            if not c:
+                break
+            s = s + c
+            if c == newline_character:
+                break
+        return s
+
+    def readlines(self):
+        """
+        Read multiple lines of text.
+
+        :returns: A list of 8-bit strings.
+        """
+        lines = []
+        while True:
+            s = self.readline()
+            if not s:
+                break
+            lines.append(s)
+        return lines

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/CurImagePlugin.py

@@ -0,0 +1,75 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# Windows Cursor support for PIL
+#
+# notes:
+#       uses BmpImagePlugin.py to read the bitmap data.
+#
+# history:
+#       96-05-27 fl     Created
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1996.
+#
+# See the README file for information on usage and redistribution.
+#
+from . import BmpImagePlugin, Image
+from ._binary import i16le as i16
+from ._binary import i32le as i32
+
+#
+# --------------------------------------------------------------------
+
+
+def _accept(prefix):
+    return prefix[:4] == b"\0\0\2\0"
+
+
+##
+# Image plugin for Windows Cursor files.
+
+
+class CurImageFile(BmpImagePlugin.BmpImageFile):
+    format = "CUR"
+    format_description = "Windows Cursor"
+
+    def _open(self):
+        offset = self.fp.tell()
+
+        # check magic
+        s = self.fp.read(6)
+        if not _accept(s):
+            msg = "not a CUR file"
+            raise SyntaxError(msg)
+
+        # pick the largest cursor in the file
+        m = b""
+        for i in range(i16(s, 4)):
+            s = self.fp.read(16)
+            if not m:
+                m = s
+            elif s[0] > m[0] and s[1] > m[1]:
+                m = s
+        if not m:
+            msg = "No cursors were found"
+            raise TypeError(msg)
+
+        # load as bitmap
+        self._bitmap(i32(m, 12) + offset)
+
+        # patch up the bitmap height
+        self._size = self.size[0], self.size[1] // 2
+        d, e, o, a = self.tile[0]
+        self.tile[0] = d, (0, 0) + self.size, o, a
+
+        return
+
+
+#
+# --------------------------------------------------------------------
+
+Image.register_open(CurImageFile.format, CurImageFile, _accept)
+
+Image.register_extension(CurImageFile.format, ".cur")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/DcxImagePlugin.py

@@ -0,0 +1,79 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# DCX file handling
+#
+# DCX is a container file format defined by Intel, commonly used
+# for fax applications.  Each DCX file consists of a directory
+# (a list of file offsets) followed by a set of (usually 1-bit)
+# PCX files.
+#
+# History:
+# 1995-09-09 fl   Created
+# 1996-03-20 fl   Properly derived from PcxImageFile.
+# 1998-07-15 fl   Renamed offset attribute to avoid name clash
+# 2002-07-30 fl   Fixed file handling
+#
+# Copyright (c) 1997-98 by Secret Labs AB.
+# Copyright (c) 1995-96 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+from . import Image
+from ._binary import i32le as i32
+from .PcxImagePlugin import PcxImageFile
+
+MAGIC = 0x3ADE68B1  # QUIZ: what's this value, then?
+
+
+def _accept(prefix):
+    return len(prefix) >= 4 and i32(prefix) == MAGIC
+
+
+##
+# Image plugin for the Intel DCX format.
+
+
+class DcxImageFile(PcxImageFile):
+    format = "DCX"
+    format_description = "Intel DCX"
+    _close_exclusive_fp_after_loading = False
+
+    def _open(self):
+        # Header
+        s = self.fp.read(4)
+        if not _accept(s):
+            msg = "not a DCX file"
+            raise SyntaxError(msg)
+
+        # Component directory
+        self._offset = []
+        for i in range(1024):
+            offset = i32(self.fp.read(4))
+            if not offset:
+                break
+            self._offset.append(offset)
+
+        self._fp = self.fp
+        self.frame = None
+        self.n_frames = len(self._offset)
+        self.is_animated = self.n_frames > 1
+        self.seek(0)
+
+    def seek(self, frame):
+        if not self._seek_check(frame):
+            return
+        self.frame = frame
+        self.fp = self._fp
+        self.fp.seek(self._offset[frame])
+        PcxImageFile._open(self)
+
+    def tell(self):
+        return self.frame
+
+
+Image.register_open(DcxImageFile.format, DcxImageFile, _accept)
+
+Image.register_extension(DcxImageFile.format, ".dcx")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/DdsImagePlugin.py

@@ -0,0 +1,291 @@
+"""
+A Pillow loader for .dds files (S3TC-compressed aka DXTC)
+Jerome Leclanche <jerome@leclan.ch>
+
+Documentation:
+  https://web.archive.org/web/20170802060935/http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt
+
+The contents of this file are hereby released in the public domain (CC0)
+Full text of the CC0 license:
+  https://creativecommons.org/publicdomain/zero/1.0/
+"""
+
+import struct
+from io import BytesIO
+
+from . import Image, ImageFile
+from ._binary import o32le as o32
+
+# Magic ("DDS ")
+DDS_MAGIC = 0x20534444
+
+# DDS flags
+DDSD_CAPS = 0x1
+DDSD_HEIGHT = 0x2
+DDSD_WIDTH = 0x4
+DDSD_PITCH = 0x8
+DDSD_PIXELFORMAT = 0x1000
+DDSD_MIPMAPCOUNT = 0x20000
+DDSD_LINEARSIZE = 0x80000
+DDSD_DEPTH = 0x800000
+
+# DDS caps
+DDSCAPS_COMPLEX = 0x8
+DDSCAPS_TEXTURE = 0x1000
+DDSCAPS_MIPMAP = 0x400000
+
+DDSCAPS2_CUBEMAP = 0x200
+DDSCAPS2_CUBEMAP_POSITIVEX = 0x400
+DDSCAPS2_CUBEMAP_NEGATIVEX = 0x800
+DDSCAPS2_CUBEMAP_POSITIVEY = 0x1000
+DDSCAPS2_CUBEMAP_NEGATIVEY = 0x2000
+DDSCAPS2_CUBEMAP_POSITIVEZ = 0x4000
+DDSCAPS2_CUBEMAP_NEGATIVEZ = 0x8000
+DDSCAPS2_VOLUME = 0x200000
+
+# Pixel Format
+DDPF_ALPHAPIXELS = 0x1
+DDPF_ALPHA = 0x2
+DDPF_FOURCC = 0x4
+DDPF_PALETTEINDEXED8 = 0x20
+DDPF_RGB = 0x40
+DDPF_LUMINANCE = 0x20000
+
+
+# dds.h
+
+DDS_FOURCC = DDPF_FOURCC
+DDS_RGB = DDPF_RGB
+DDS_RGBA = DDPF_RGB | DDPF_ALPHAPIXELS
+DDS_LUMINANCE = DDPF_LUMINANCE
+DDS_LUMINANCEA = DDPF_LUMINANCE | DDPF_ALPHAPIXELS
+DDS_ALPHA = DDPF_ALPHA
+DDS_PAL8 = DDPF_PALETTEINDEXED8
+
+DDS_HEADER_FLAGS_TEXTURE = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT
+DDS_HEADER_FLAGS_MIPMAP = DDSD_MIPMAPCOUNT
+DDS_HEADER_FLAGS_VOLUME = DDSD_DEPTH
+DDS_HEADER_FLAGS_PITCH = DDSD_PITCH
+DDS_HEADER_FLAGS_LINEARSIZE = DDSD_LINEARSIZE
+
+DDS_HEIGHT = DDSD_HEIGHT
+DDS_WIDTH = DDSD_WIDTH
+
+DDS_SURFACE_FLAGS_TEXTURE = DDSCAPS_TEXTURE
+DDS_SURFACE_FLAGS_MIPMAP = DDSCAPS_COMPLEX | DDSCAPS_MIPMAP
+DDS_SURFACE_FLAGS_CUBEMAP = DDSCAPS_COMPLEX
+
+DDS_CUBEMAP_POSITIVEX = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEX
+DDS_CUBEMAP_NEGATIVEX = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEX
+DDS_CUBEMAP_POSITIVEY = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEY
+DDS_CUBEMAP_NEGATIVEY = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEY
+DDS_CUBEMAP_POSITIVEZ = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEZ
+DDS_CUBEMAP_NEGATIVEZ = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEZ
+
+
+# DXT1
+DXT1_FOURCC = 0x31545844
+
+# DXT3
+DXT3_FOURCC = 0x33545844
+
+# DXT5
+DXT5_FOURCC = 0x35545844
+
+
+# dxgiformat.h
+
+DXGI_FORMAT_R8G8B8A8_TYPELESS = 27
+DXGI_FORMAT_R8G8B8A8_UNORM = 28
+DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29
+DXGI_FORMAT_BC5_TYPELESS = 82
+DXGI_FORMAT_BC5_UNORM = 83
+DXGI_FORMAT_BC5_SNORM = 84
+DXGI_FORMAT_BC6H_UF16 = 95
+DXGI_FORMAT_BC6H_SF16 = 96
+DXGI_FORMAT_BC7_TYPELESS = 97
+DXGI_FORMAT_BC7_UNORM = 98
+DXGI_FORMAT_BC7_UNORM_SRGB = 99
+
+
+class DdsImageFile(ImageFile.ImageFile):
+    format = "DDS"
+    format_description = "DirectDraw Surface"
+
+    def _open(self):
+        if not _accept(self.fp.read(4)):
+            msg = "not a DDS file"
+            raise SyntaxError(msg)
+        (header_size,) = struct.unpack("<I", self.fp.read(4))
+        if header_size != 124:
+            msg = f"Unsupported header size {repr(header_size)}"
+            raise OSError(msg)
+        header_bytes = self.fp.read(header_size - 4)
+        if len(header_bytes) != 120:
+            msg = f"Incomplete header: {len(header_bytes)} bytes"
+            raise OSError(msg)
+        header = BytesIO(header_bytes)
+
+        flags, height, width = struct.unpack("<3I", header.read(12))
+        self._size = (width, height)
+        self.mode = "RGBA"
+
+        pitch, depth, mipmaps = struct.unpack("<3I", header.read(12))
+        struct.unpack("<11I", header.read(44))  # reserved
+
+        # pixel format
+        pfsize, pfflags = struct.unpack("<2I", header.read(8))
+        fourcc = header.read(4)
+        (bitcount,) = struct.unpack("<I", header.read(4))
+        masks = struct.unpack("<4I", header.read(16))
+        if pfflags & DDPF_LUMINANCE:
+            # Texture contains uncompressed L or LA data
+            if pfflags & DDPF_ALPHAPIXELS:
+                self.mode = "LA"
+            else:
+                self.mode = "L"
+
+            self.tile = [("raw", (0, 0) + self.size, 0, (self.mode, 0, 1))]
+        elif pfflags & DDPF_RGB:
+            # Texture contains uncompressed RGB data
+            masks = {mask: ["R", "G", "B", "A"][i] for i, mask in enumerate(masks)}
+            rawmode = ""
+            if pfflags & DDPF_ALPHAPIXELS:
+                rawmode += masks[0xFF000000]
+            else:
+                self.mode = "RGB"
+            rawmode += masks[0xFF0000] + masks[0xFF00] + masks[0xFF]
+
+            self.tile = [("raw", (0, 0) + self.size, 0, (rawmode[::-1], 0, 1))]
+        else:
+            data_start = header_size + 4
+            n = 0
+            if fourcc == b"DXT1":
+                self.pixel_format = "DXT1"
+                n = 1
+            elif fourcc == b"DXT3":
+                self.pixel_format = "DXT3"
+                n = 2
+            elif fourcc == b"DXT5":
+                self.pixel_format = "DXT5"
+                n = 3
+            elif fourcc == b"ATI1":
+                self.pixel_format = "BC4"
+                n = 4
+                self.mode = "L"
+            elif fourcc == b"ATI2":
+                self.pixel_format = "BC5"
+                n = 5
+                self.mode = "RGB"
+            elif fourcc == b"BC5S":
+                self.pixel_format = "BC5S"
+                n = 5
+                self.mode = "RGB"
+            elif fourcc == b"DX10":
+                data_start += 20
+                # ignoring flags which pertain to volume textures and cubemaps
+                (dxgi_format,) = struct.unpack("<I", self.fp.read(4))
+                self.fp.read(16)
+                if dxgi_format in (DXGI_FORMAT_BC5_TYPELESS, DXGI_FORMAT_BC5_UNORM):
+                    self.pixel_format = "BC5"
+                    n = 5
+                    self.mode = "RGB"
+                elif dxgi_format == DXGI_FORMAT_BC5_SNORM:
+                    self.pixel_format = "BC5S"
+                    n = 5
+                    self.mode = "RGB"
+                elif dxgi_format == DXGI_FORMAT_BC6H_UF16:
+                    self.pixel_format = "BC6H"
+                    n = 6
+                    self.mode = "RGB"
+                elif dxgi_format == DXGI_FORMAT_BC6H_SF16:
+                    self.pixel_format = "BC6HS"
+                    n = 6
+                    self.mode = "RGB"
+                elif dxgi_format in (DXGI_FORMAT_BC7_TYPELESS, DXGI_FORMAT_BC7_UNORM):
+                    self.pixel_format = "BC7"
+                    n = 7
+                elif dxgi_format == DXGI_FORMAT_BC7_UNORM_SRGB:
+                    self.pixel_format = "BC7"
+                    self.info["gamma"] = 1 / 2.2
+                    n = 7
+                elif dxgi_format in (
+                    DXGI_FORMAT_R8G8B8A8_TYPELESS,
+                    DXGI_FORMAT_R8G8B8A8_UNORM,
+                    DXGI_FORMAT_R8G8B8A8_UNORM_SRGB,
+                ):
+                    self.tile = [("raw", (0, 0) + self.size, 0, ("RGBA", 0, 1))]
+                    if dxgi_format == DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
+                        self.info["gamma"] = 1 / 2.2
+                    return
+                else:
+                    msg = f"Unimplemented DXGI format {dxgi_format}"
+                    raise NotImplementedError(msg)
+            else:
+                msg = f"Unimplemented pixel format {repr(fourcc)}"
+                raise NotImplementedError(msg)
+
+            self.tile = [
+                ("bcn", (0, 0) + self.size, data_start, (n, self.pixel_format))
+            ]
+
+    def load_seek(self, pos):
+        pass
+
+
+def _save(im, fp, filename):
+    if im.mode not in ("RGB", "RGBA", "L", "LA"):
+        msg = f"cannot write mode {im.mode} as DDS"
+        raise OSError(msg)
+
+    rawmode = im.mode
+    masks = [0xFF0000, 0xFF00, 0xFF]
+    if im.mode in ("L", "LA"):
+        pixel_flags = DDPF_LUMINANCE
+    else:
+        pixel_flags = DDPF_RGB
+        rawmode = rawmode[::-1]
+    if im.mode in ("LA", "RGBA"):
+        pixel_flags |= DDPF_ALPHAPIXELS
+        masks.append(0xFF000000)
+
+    bitcount = len(masks) * 8
+    while len(masks) < 4:
+        masks.append(0)
+
+    fp.write(
+        o32(DDS_MAGIC)
+        + o32(124)  # header size
+        + o32(
+            DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PITCH | DDSD_PIXELFORMAT
+        )  # flags
+        + o32(im.height)
+        + o32(im.width)
+        + o32((im.width * bitcount + 7) // 8)  # pitch
+        + o32(0)  # depth
+        + o32(0)  # mipmaps
+        + o32(0) * 11  # reserved
+        + o32(32)  # pfsize
+        + o32(pixel_flags)  # pfflags
+        + o32(0)  # fourcc
+        + o32(bitcount)  # bitcount
+        + b"".join(o32(mask) for mask in masks)  # rgbabitmask
+        + o32(DDSCAPS_TEXTURE)  # dwCaps
+        + o32(0)  # dwCaps2
+        + o32(0)  # dwCaps3
+        + o32(0)  # dwCaps4
+        + o32(0)  # dwReserved2
+    )
+    if im.mode == "RGBA":
+        r, g, b, a = im.split()
+        im = Image.merge("RGBA", (a, r, g, b))
+    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))])
+
+
+def _accept(prefix):
+    return prefix[:4] == b"DDS "
+
+
+Image.register_open(DdsImageFile.format, DdsImageFile, _accept)
+Image.register_save(DdsImageFile.format, _save)
+Image.register_extension(DdsImageFile.format, ".dds")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/EpsImagePlugin.py

@@ -0,0 +1,466 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# EPS file handling
+#
+# History:
+# 1995-09-01 fl   Created (0.1)
+# 1996-05-18 fl   Don't choke on "atend" fields, Ghostscript interface (0.2)
+# 1996-08-22 fl   Don't choke on floating point BoundingBox values
+# 1996-08-23 fl   Handle files from Macintosh (0.3)
+# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.4)
+# 2003-09-07 fl   Check gs.close status (from Federico Di Gregorio) (0.5)
+# 2014-05-07 e    Handling of EPS with binary preview and fixed resolution
+#                 resizing
+#
+# Copyright (c) 1997-2003 by Secret Labs AB.
+# Copyright (c) 1995-2003 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import io
+import os
+import re
+import subprocess
+import sys
+import tempfile
+
+from . import Image, ImageFile
+from ._binary import i32le as i32
+from ._deprecate import deprecate
+
+# --------------------------------------------------------------------
+
+
+split = re.compile(r"^%%([^:]*):[ \t]*(.*)[ \t]*$")
+field = re.compile(r"^%[%!\w]([^:]*)[ \t]*$")
+
+gs_windows_binary = None
+if sys.platform.startswith("win"):
+    import shutil
+
+    for binary in ("gswin32c", "gswin64c", "gs"):
+        if shutil.which(binary) is not None:
+            gs_windows_binary = binary
+            break
+    else:
+        gs_windows_binary = False
+
+
+def has_ghostscript():
+    if gs_windows_binary:
+        return True
+    if not sys.platform.startswith("win"):
+        try:
+            subprocess.check_call(["gs", "--version"], stdout=subprocess.DEVNULL)
+            return True
+        except OSError:
+            # No Ghostscript
+            pass
+    return False
+
+
+def Ghostscript(tile, size, fp, scale=1, transparency=False):
+    """Render an image using Ghostscript"""
+
+    # Unpack decoder tile
+    decoder, tile, offset, data = tile[0]
+    length, bbox = data
+
+    # Hack to support hi-res rendering
+    scale = int(scale) or 1
+    # orig_size = size
+    # orig_bbox = bbox
+    size = (size[0] * scale, size[1] * scale)
+    # resolution is dependent on bbox and size
+    res = (
+        72.0 * size[0] / (bbox[2] - bbox[0]),
+        72.0 * size[1] / (bbox[3] - bbox[1]),
+    )
+
+    out_fd, outfile = tempfile.mkstemp()
+    os.close(out_fd)
+
+    infile_temp = None
+    if hasattr(fp, "name") and os.path.exists(fp.name):
+        infile = fp.name
+    else:
+        in_fd, infile_temp = tempfile.mkstemp()
+        os.close(in_fd)
+        infile = infile_temp
+
+        # Ignore length and offset!
+        # Ghostscript can read it
+        # Copy whole file to read in Ghostscript
+        with open(infile_temp, "wb") as f:
+            # fetch length of fp
+            fp.seek(0, io.SEEK_END)
+            fsize = fp.tell()
+            # ensure start position
+            # go back
+            fp.seek(0)
+            lengthfile = fsize
+            while lengthfile > 0:
+                s = fp.read(min(lengthfile, 100 * 1024))
+                if not s:
+                    break
+                lengthfile -= len(s)
+                f.write(s)
+
+    device = "pngalpha" if transparency else "ppmraw"
+
+    # Build Ghostscript command
+    command = [
+        "gs",
+        "-q",  # quiet mode
+        "-g%dx%d" % size,  # set output geometry (pixels)
+        "-r%fx%f" % res,  # set input DPI (dots per inch)
+        "-dBATCH",  # exit after processing
+        "-dNOPAUSE",  # don't pause between pages
+        "-dSAFER",  # safe mode
+        f"-sDEVICE={device}",
+        f"-sOutputFile={outfile}",  # output file
+        # adjust for image origin
+        "-c",
+        f"{-bbox[0]} {-bbox[1]} translate",
+        "-f",
+        infile,  # input file
+        # showpage (see https://bugs.ghostscript.com/show_bug.cgi?id=698272)
+        "-c",
+        "showpage",
+    ]
+
+    if gs_windows_binary is not None:
+        if not gs_windows_binary:
+            try:
+                os.unlink(outfile)
+                if infile_temp:
+                    os.unlink(infile_temp)
+            except OSError:
+                pass
+
+            msg = "Unable to locate Ghostscript on paths"
+            raise OSError(msg)
+        command[0] = gs_windows_binary
+
+    # push data through Ghostscript
+    try:
+        startupinfo = None
+        if sys.platform.startswith("win"):
+            startupinfo = subprocess.STARTUPINFO()
+            startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
+        subprocess.check_call(command, startupinfo=startupinfo)
+        out_im = Image.open(outfile)
+        out_im.load()
+    finally:
+        try:
+            os.unlink(outfile)
+            if infile_temp:
+                os.unlink(infile_temp)
+        except OSError:
+            pass
+
+    im = out_im.im.copy()
+    out_im.close()
+    return im
+
+
+class PSFile:
+    """
+    Wrapper for bytesio object that treats either CR or LF as end of line.
+    This class is no longer used internally, but kept for backwards compatibility.
+    """
+
+    def __init__(self, fp):
+        deprecate(
+            "PSFile",
+            11,
+            action="If you need the functionality of this class "
+            "you will need to implement it yourself.",
+        )
+        self.fp = fp
+        self.char = None
+
+    def seek(self, offset, whence=io.SEEK_SET):
+        self.char = None
+        self.fp.seek(offset, whence)
+
+    def readline(self):
+        s = [self.char or b""]
+        self.char = None
+
+        c = self.fp.read(1)
+        while (c not in b"\r\n") and len(c):
+            s.append(c)
+            c = self.fp.read(1)
+
+        self.char = self.fp.read(1)
+        # line endings can be 1 or 2 of \r \n, in either order
+        if self.char in b"\r\n":
+            self.char = None
+
+        return b"".join(s).decode("latin-1")
+
+
+def _accept(prefix):
+    return prefix[:4] == b"%!PS" or (len(prefix) >= 4 and i32(prefix) == 0xC6D3D0C5)
+
+
+##
+# Image plugin for Encapsulated PostScript. This plugin supports only
+# a few variants of this format.
+
+
+class EpsImageFile(ImageFile.ImageFile):
+    """EPS File Parser for the Python Imaging Library"""
+
+    format = "EPS"
+    format_description = "Encapsulated Postscript"
+
+    mode_map = {1: "L", 2: "LAB", 3: "RGB", 4: "CMYK"}
+
+    def _open(self):
+        (length, offset) = self._find_offset(self.fp)
+
+        # go to offset - start of "%!PS"
+        self.fp.seek(offset)
+
+        self.mode = "RGB"
+        self._size = None
+
+        byte_arr = bytearray(255)
+        bytes_mv = memoryview(byte_arr)
+        bytes_read = 0
+        reading_comments = True
+
+        def check_required_header_comments():
+            if "PS-Adobe" not in self.info:
+                msg = 'EPS header missing "%!PS-Adobe" comment'
+                raise SyntaxError(msg)
+            if "BoundingBox" not in self.info:
+                msg = 'EPS header missing "%%BoundingBox" comment'
+                raise SyntaxError(msg)
+
+        while True:
+            byte = self.fp.read(1)
+            if byte == b"":
+                # if we didn't read a byte we must be at the end of the file
+                if bytes_read == 0:
+                    break
+            elif byte in b"\r\n":
+                # if we read a line ending character, ignore it and parse what
+                # we have already read. if we haven't read any other characters,
+                # continue reading
+                if bytes_read == 0:
+                    continue
+            else:
+                # ASCII/hexadecimal lines in an EPS file must not exceed
+                # 255 characters, not including line ending characters
+                if bytes_read >= 255:
+                    # only enforce this for lines starting with a "%",
+                    # otherwise assume it's binary data
+                    if byte_arr[0] == ord("%"):
+                        msg = "not an EPS file"
+                        raise SyntaxError(msg)
+                    else:
+                        if reading_comments:
+                            check_required_header_comments()
+                            reading_comments = False
+                        # reset bytes_read so we can keep reading
+                        # data until the end of the line
+                        bytes_read = 0
+                byte_arr[bytes_read] = byte[0]
+                bytes_read += 1
+                continue
+
+            if reading_comments:
+                # Load EPS header
+
+                # if this line doesn't start with a "%",
+                # or does start with "%%EndComments",
+                # then we've reached the end of the header/comments
+                if byte_arr[0] != ord("%") or bytes_mv[:13] == b"%%EndComments":
+                    check_required_header_comments()
+                    reading_comments = False
+                    continue
+
+                s = str(bytes_mv[:bytes_read], "latin-1")
+
+                try:
+                    m = split.match(s)
+                except re.error as e:
+                    msg = "not an EPS file"
+                    raise SyntaxError(msg) from e
+
+                if m:
+                    k, v = m.group(1, 2)
+                    self.info[k] = v
+                    if k == "BoundingBox":
+                        try:
+                            # Note: The DSC spec says that BoundingBox
+                            # fields should be integers, but some drivers
+                            # put floating point values there anyway.
+                            box = [int(float(i)) for i in v.split()]
+                            self._size = box[2] - box[0], box[3] - box[1]
+                            self.tile = [
+                                ("eps", (0, 0) + self.size, offset, (length, box))
+                            ]
+                        except Exception:
+                            pass
+                else:
+                    m = field.match(s)
+                    if m:
+                        k = m.group(1)
+                        if k[:8] == "PS-Adobe":
+                            self.info["PS-Adobe"] = k[9:]
+                        else:
+                            self.info[k] = ""
+                    elif s[0] == "%":
+                        # handle non-DSC PostScript comments that some
+                        # tools mistakenly put in the Comments section
+                        pass
+                    else:
+                        msg = "bad EPS header"
+                        raise OSError(msg)
+            elif bytes_mv[:11] == b"%ImageData:":
+                # Check for an "ImageData" descriptor
+                # https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#50577413_pgfId-1035096
+
+                # Values:
+                # columns
+                # rows
+                # bit depth (1 or 8)
+                # mode (1: L, 2: LAB, 3: RGB, 4: CMYK)
+                # number of padding channels
+                # block size (number of bytes per row per channel)
+                # binary/ascii (1: binary, 2: ascii)
+                # data start identifier (the image data follows after a single line
+                #   consisting only of this quoted value)
+                image_data_values = byte_arr[11:bytes_read].split(None, 7)
+                columns, rows, bit_depth, mode_id = [
+                    int(value) for value in image_data_values[:4]
+                ]
+
+                if bit_depth == 1:
+                    self.mode = "1"
+                elif bit_depth == 8:
+                    try:
+                        self.mode = self.mode_map[mode_id]
+                    except ValueError:
+                        break
+                else:
+                    break
+
+                self._size = columns, rows
+                return
+
+            bytes_read = 0
+
+        check_required_header_comments()
+
+        if not self._size:
+            msg = "cannot determine EPS bounding box"
+            raise OSError(msg)
+
+    def _find_offset(self, fp):
+        s = fp.read(4)
+
+        if s == b"%!PS":
+            # for HEAD without binary preview
+            fp.seek(0, io.SEEK_END)
+            length = fp.tell()
+            offset = 0
+        elif i32(s) == 0xC6D3D0C5:
+            # FIX for: Some EPS file not handled correctly / issue #302
+            # EPS can contain binary data
+            # or start directly with latin coding
+            # more info see:
+            # https://web.archive.org/web/20160528181353/http://partners.adobe.com/public/developer/en/ps/5002.EPSF_Spec.pdf
+            s = fp.read(8)
+            offset = i32(s)
+            length = i32(s, 4)
+        else:
+            msg = "not an EPS file"
+            raise SyntaxError(msg)
+
+        return length, offset
+
+    def load(self, scale=1, transparency=False):
+        # Load EPS via Ghostscript
+        if self.tile:
+            self.im = Ghostscript(self.tile, self.size, self.fp, scale, transparency)
+            self.mode = self.im.mode
+            self._size = self.im.size
+            self.tile = []
+        return Image.Image.load(self)
+
+    def load_seek(self, *args, **kwargs):
+        # we can't incrementally load, so force ImageFile.parser to
+        # use our custom load method by defining this method.
+        pass
+
+
+# --------------------------------------------------------------------
+
+
+def _save(im, fp, filename, eps=1):
+    """EPS Writer for the Python Imaging Library."""
+
+    # make sure image data is available
+    im.load()
+
+    # determine PostScript image mode
+    if im.mode == "L":
+        operator = (8, 1, b"image")
+    elif im.mode == "RGB":
+        operator = (8, 3, b"false 3 colorimage")
+    elif im.mode == "CMYK":
+        operator = (8, 4, b"false 4 colorimage")
+    else:
+        msg = "image mode is not supported"
+        raise ValueError(msg)
+
+    if eps:
+        # write EPS header
+        fp.write(b"%!PS-Adobe-3.0 EPSF-3.0\n")
+        fp.write(b"%%Creator: PIL 0.1 EpsEncode\n")
+        # fp.write("%%CreationDate: %s"...)
+        fp.write(b"%%%%BoundingBox: 0 0 %d %d\n" % im.size)
+        fp.write(b"%%Pages: 1\n")
+        fp.write(b"%%EndComments\n")
+        fp.write(b"%%Page: 1 1\n")
+        fp.write(b"%%ImageData: %d %d " % im.size)
+        fp.write(b'%d %d 0 1 1 "%s"\n' % operator)
+
+    # image header
+    fp.write(b"gsave\n")
+    fp.write(b"10 dict begin\n")
+    fp.write(b"/buf %d string def\n" % (im.size[0] * operator[1]))
+    fp.write(b"%d %d scale\n" % im.size)
+    fp.write(b"%d %d 8\n" % im.size)  # <= bits
+    fp.write(b"[%d 0 0 -%d 0 %d]\n" % (im.size[0], im.size[1], im.size[1]))
+    fp.write(b"{ currentfile buf readhexstring pop } bind\n")
+    fp.write(operator[2] + b"\n")
+    if hasattr(fp, "flush"):
+        fp.flush()
+
+    ImageFile._save(im, fp, [("eps", (0, 0) + im.size, 0, None)])
+
+    fp.write(b"\n%%%%EndBinary\n")
+    fp.write(b"grestore end\n")
+    if hasattr(fp, "flush"):
+        fp.flush()
+
+
+# --------------------------------------------------------------------
+
+
+Image.register_open(EpsImageFile.format, EpsImageFile, _accept)
+
+Image.register_save(EpsImageFile.format, _save)
+
+Image.register_extensions(EpsImageFile.format, [".ps", ".eps"])
+
+Image.register_mime(EpsImageFile.format, "application/postscript")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ExifTags.py

@@ -0,0 +1,380 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# EXIF tags
+#
+# Copyright (c) 2003 by Secret Labs AB
+#
+# See the README file for information on usage and redistribution.
+#
+
+"""
+This module provides constants and clear-text names for various
+well-known EXIF tags.
+"""
+
+from enum import IntEnum
+
+
+class Base(IntEnum):
+    # possibly incomplete
+    InteropIndex = 0x0001
+    ProcessingSoftware = 0x000B
+    NewSubfileType = 0x00FE
+    SubfileType = 0x00FF
+    ImageWidth = 0x0100
+    ImageLength = 0x0101
+    BitsPerSample = 0x0102
+    Compression = 0x0103
+    PhotometricInterpretation = 0x0106
+    Thresholding = 0x0107
+    CellWidth = 0x0108
+    CellLength = 0x0109
+    FillOrder = 0x010A
+    DocumentName = 0x010D
+    ImageDescription = 0x010E
+    Make = 0x010F
+    Model = 0x0110
+    StripOffsets = 0x0111
+    Orientation = 0x0112
+    SamplesPerPixel = 0x0115
+    RowsPerStrip = 0x0116
+    StripByteCounts = 0x0117
+    MinSampleValue = 0x0118
+    MaxSampleValue = 0x0119
+    XResolution = 0x011A
+    YResolution = 0x011B
+    PlanarConfiguration = 0x011C
+    PageName = 0x011D
+    FreeOffsets = 0x0120
+    FreeByteCounts = 0x0121
+    GrayResponseUnit = 0x0122
+    GrayResponseCurve = 0x0123
+    T4Options = 0x0124
+    T6Options = 0x0125
+    ResolutionUnit = 0x0128
+    PageNumber = 0x0129
+    TransferFunction = 0x012D
+    Software = 0x0131
+    DateTime = 0x0132
+    Artist = 0x013B
+    HostComputer = 0x013C
+    Predictor = 0x013D
+    WhitePoint = 0x013E
+    PrimaryChromaticities = 0x013F
+    ColorMap = 0x0140
+    HalftoneHints = 0x0141
+    TileWidth = 0x0142
+    TileLength = 0x0143
+    TileOffsets = 0x0144
+    TileByteCounts = 0x0145
+    SubIFDs = 0x014A
+    InkSet = 0x014C
+    InkNames = 0x014D
+    NumberOfInks = 0x014E
+    DotRange = 0x0150
+    TargetPrinter = 0x0151
+    ExtraSamples = 0x0152
+    SampleFormat = 0x0153
+    SMinSampleValue = 0x0154
+    SMaxSampleValue = 0x0155
+    TransferRange = 0x0156
+    ClipPath = 0x0157
+    XClipPathUnits = 0x0158
+    YClipPathUnits = 0x0159
+    Indexed = 0x015A
+    JPEGTables = 0x015B
+    OPIProxy = 0x015F
+    JPEGProc = 0x0200
+    JpegIFOffset = 0x0201
+    JpegIFByteCount = 0x0202
+    JpegRestartInterval = 0x0203
+    JpegLosslessPredictors = 0x0205
+    JpegPointTransforms = 0x0206
+    JpegQTables = 0x0207
+    JpegDCTables = 0x0208
+    JpegACTables = 0x0209
+    YCbCrCoefficients = 0x0211
+    YCbCrSubSampling = 0x0212
+    YCbCrPositioning = 0x0213
+    ReferenceBlackWhite = 0x0214
+    XMLPacket = 0x02BC
+    RelatedImageFileFormat = 0x1000
+    RelatedImageWidth = 0x1001
+    RelatedImageLength = 0x1002
+    Rating = 0x4746
+    RatingPercent = 0x4749
+    ImageID = 0x800D
+    CFARepeatPatternDim = 0x828D
+    BatteryLevel = 0x828F
+    Copyright = 0x8298
+    ExposureTime = 0x829A
+    FNumber = 0x829D
+    IPTCNAA = 0x83BB
+    ImageResources = 0x8649
+    ExifOffset = 0x8769
+    InterColorProfile = 0x8773
+    ExposureProgram = 0x8822
+    SpectralSensitivity = 0x8824
+    GPSInfo = 0x8825
+    ISOSpeedRatings = 0x8827
+    OECF = 0x8828
+    Interlace = 0x8829
+    TimeZoneOffset = 0x882A
+    SelfTimerMode = 0x882B
+    SensitivityType = 0x8830
+    StandardOutputSensitivity = 0x8831
+    RecommendedExposureIndex = 0x8832
+    ISOSpeed = 0x8833
+    ISOSpeedLatitudeyyy = 0x8834
+    ISOSpeedLatitudezzz = 0x8835
+    ExifVersion = 0x9000
+    DateTimeOriginal = 0x9003
+    DateTimeDigitized = 0x9004
+    OffsetTime = 0x9010
+    OffsetTimeOriginal = 0x9011
+    OffsetTimeDigitized = 0x9012
+    ComponentsConfiguration = 0x9101
+    CompressedBitsPerPixel = 0x9102
+    ShutterSpeedValue = 0x9201
+    ApertureValue = 0x9202
+    BrightnessValue = 0x9203
+    ExposureBiasValue = 0x9204
+    MaxApertureValue = 0x9205
+    SubjectDistance = 0x9206
+    MeteringMode = 0x9207
+    LightSource = 0x9208
+    Flash = 0x9209
+    FocalLength = 0x920A
+    Noise = 0x920D
+    ImageNumber = 0x9211
+    SecurityClassification = 0x9212
+    ImageHistory = 0x9213
+    TIFFEPStandardID = 0x9216
+    MakerNote = 0x927C
+    UserComment = 0x9286
+    SubsecTime = 0x9290
+    SubsecTimeOriginal = 0x9291
+    SubsecTimeDigitized = 0x9292
+    AmbientTemperature = 0x9400
+    Humidity = 0x9401
+    Pressure = 0x9402
+    WaterDepth = 0x9403
+    Acceleration = 0x9404
+    CameraElevationAngle = 0x9405
+    XPTitle = 0x9C9B
+    XPComment = 0x9C9C
+    XPAuthor = 0x9C9D
+    XPKeywords = 0x9C9E
+    XPSubject = 0x9C9F
+    FlashPixVersion = 0xA000
+    ColorSpace = 0xA001
+    ExifImageWidth = 0xA002
+    ExifImageHeight = 0xA003
+    RelatedSoundFile = 0xA004
+    ExifInteroperabilityOffset = 0xA005
+    FlashEnergy = 0xA20B
+    SpatialFrequencyResponse = 0xA20C
+    FocalPlaneXResolution = 0xA20E
+    FocalPlaneYResolution = 0xA20F
+    FocalPlaneResolutionUnit = 0xA210
+    SubjectLocation = 0xA214
+    ExposureIndex = 0xA215
+    SensingMethod = 0xA217
+    FileSource = 0xA300
+    SceneType = 0xA301
+    CFAPattern = 0xA302
+    CustomRendered = 0xA401
+    ExposureMode = 0xA402
+    WhiteBalance = 0xA403
+    DigitalZoomRatio = 0xA404
+    FocalLengthIn35mmFilm = 0xA405
+    SceneCaptureType = 0xA406
+    GainControl = 0xA407
+    Contrast = 0xA408
+    Saturation = 0xA409
+    Sharpness = 0xA40A
+    DeviceSettingDescription = 0xA40B
+    SubjectDistanceRange = 0xA40C
+    ImageUniqueID = 0xA420
+    CameraOwnerName = 0xA430
+    BodySerialNumber = 0xA431
+    LensSpecification = 0xA432
+    LensMake = 0xA433
+    LensModel = 0xA434
+    LensSerialNumber = 0xA435
+    CompositeImage = 0xA460
+    CompositeImageCount = 0xA461
+    CompositeImageExposureTimes = 0xA462
+    Gamma = 0xA500
+    PrintImageMatching = 0xC4A5
+    DNGVersion = 0xC612
+    DNGBackwardVersion = 0xC613
+    UniqueCameraModel = 0xC614
+    LocalizedCameraModel = 0xC615
+    CFAPlaneColor = 0xC616
+    CFALayout = 0xC617
+    LinearizationTable = 0xC618
+    BlackLevelRepeatDim = 0xC619
+    BlackLevel = 0xC61A
+    BlackLevelDeltaH = 0xC61B
+    BlackLevelDeltaV = 0xC61C
+    WhiteLevel = 0xC61D
+    DefaultScale = 0xC61E
+    DefaultCropOrigin = 0xC61F
+    DefaultCropSize = 0xC620
+    ColorMatrix1 = 0xC621
+    ColorMatrix2 = 0xC622
+    CameraCalibration1 = 0xC623
+    CameraCalibration2 = 0xC624
+    ReductionMatrix1 = 0xC625
+    ReductionMatrix2 = 0xC626
+    AnalogBalance = 0xC627
+    AsShotNeutral = 0xC628
+    AsShotWhiteXY = 0xC629
+    BaselineExposure = 0xC62A
+    BaselineNoise = 0xC62B
+    BaselineSharpness = 0xC62C
+    BayerGreenSplit = 0xC62D
+    LinearResponseLimit = 0xC62E
+    CameraSerialNumber = 0xC62F
+    LensInfo = 0xC630
+    ChromaBlurRadius = 0xC631
+    AntiAliasStrength = 0xC632
+    ShadowScale = 0xC633
+    DNGPrivateData = 0xC634
+    MakerNoteSafety = 0xC635
+    CalibrationIlluminant1 = 0xC65A
+    CalibrationIlluminant2 = 0xC65B
+    BestQualityScale = 0xC65C
+    RawDataUniqueID = 0xC65D
+    OriginalRawFileName = 0xC68B
+    OriginalRawFileData = 0xC68C
+    ActiveArea = 0xC68D
+    MaskedAreas = 0xC68E
+    AsShotICCProfile = 0xC68F
+    AsShotPreProfileMatrix = 0xC690
+    CurrentICCProfile = 0xC691
+    CurrentPreProfileMatrix = 0xC692
+    ColorimetricReference = 0xC6BF
+    CameraCalibrationSignature = 0xC6F3
+    ProfileCalibrationSignature = 0xC6F4
+    AsShotProfileName = 0xC6F6
+    NoiseReductionApplied = 0xC6F7
+    ProfileName = 0xC6F8
+    ProfileHueSatMapDims = 0xC6F9
+    ProfileHueSatMapData1 = 0xC6FA
+    ProfileHueSatMapData2 = 0xC6FB
+    ProfileToneCurve = 0xC6FC
+    ProfileEmbedPolicy = 0xC6FD
+    ProfileCopyright = 0xC6FE
+    ForwardMatrix1 = 0xC714
+    ForwardMatrix2 = 0xC715
+    PreviewApplicationName = 0xC716
+    PreviewApplicationVersion = 0xC717
+    PreviewSettingsName = 0xC718
+    PreviewSettingsDigest = 0xC719
+    PreviewColorSpace = 0xC71A
+    PreviewDateTime = 0xC71B
+    RawImageDigest = 0xC71C
+    OriginalRawFileDigest = 0xC71D
+    SubTileBlockSize = 0xC71E
+    RowInterleaveFactor = 0xC71F
+    ProfileLookTableDims = 0xC725
+    ProfileLookTableData = 0xC726
+    OpcodeList1 = 0xC740
+    OpcodeList2 = 0xC741
+    OpcodeList3 = 0xC74E
+    NoiseProfile = 0xC761
+
+
+"""Maps EXIF tags to tag names."""
+TAGS = {
+    **{i.value: i.name for i in Base},
+    0x920C: "SpatialFrequencyResponse",
+    0x9214: "SubjectLocation",
+    0x9215: "ExposureIndex",
+    0x828E: "CFAPattern",
+    0x920B: "FlashEnergy",
+    0x9216: "TIFF/EPStandardID",
+}
+
+
+class GPS(IntEnum):
+    GPSVersionID = 0
+    GPSLatitudeRef = 1
+    GPSLatitude = 2
+    GPSLongitudeRef = 3
+    GPSLongitude = 4
+    GPSAltitudeRef = 5
+    GPSAltitude = 6
+    GPSTimeStamp = 7
+    GPSSatellites = 8
+    GPSStatus = 9
+    GPSMeasureMode = 10
+    GPSDOP = 11
+    GPSSpeedRef = 12
+    GPSSpeed = 13
+    GPSTrackRef = 14
+    GPSTrack = 15
+    GPSImgDirectionRef = 16
+    GPSImgDirection = 17
+    GPSMapDatum = 18
+    GPSDestLatitudeRef = 19
+    GPSDestLatitude = 20
+    GPSDestLongitudeRef = 21
+    GPSDestLongitude = 22
+    GPSDestBearingRef = 23
+    GPSDestBearing = 24
+    GPSDestDistanceRef = 25
+    GPSDestDistance = 26
+    GPSProcessingMethod = 27
+    GPSAreaInformation = 28
+    GPSDateStamp = 29
+    GPSDifferential = 30
+    GPSHPositioningError = 31
+
+
+"""Maps EXIF GPS tags to tag names."""
+GPSTAGS = {i.value: i.name for i in GPS}
+
+
+class Interop(IntEnum):
+    InteropIndex = 1
+    InteropVersion = 2
+    RelatedImageFileFormat = 4096
+    RelatedImageWidth = 4097
+    RleatedImageHeight = 4098
+
+
+class IFD(IntEnum):
+    Exif = 34665
+    GPSInfo = 34853
+    Makernote = 37500
+    Interop = 40965
+    IFD1 = -1
+
+
+class LightSource(IntEnum):
+    Unknown = 0
+    Daylight = 1
+    Fluorescent = 2
+    Tungsten = 3
+    Flash = 4
+    Fine = 9
+    Cloudy = 10
+    Shade = 11
+    DaylightFluorescent = 12
+    DayWhiteFluorescent = 13
+    CoolWhiteFluorescent = 14
+    WhiteFluorescent = 15
+    StandardLightA = 17
+    StandardLightB = 18
+    StandardLightC = 19
+    D55 = 20
+    D65 = 21
+    D75 = 22
+    D50 = 23
+    ISO = 24
+    Other = 255

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/FitsImagePlugin.py

@@ -0,0 +1,73 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# FITS file handling
+#
+# Copyright (c) 1998-2003 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import math
+
+from . import Image, ImageFile
+
+
+def _accept(prefix):
+    return prefix[:6] == b"SIMPLE"
+
+
+class FitsImageFile(ImageFile.ImageFile):
+    format = "FITS"
+    format_description = "FITS"
+
+    def _open(self):
+        headers = {}
+        while True:
+            header = self.fp.read(80)
+            if not header:
+                msg = "Truncated FITS file"
+                raise OSError(msg)
+            keyword = header[:8].strip()
+            if keyword == b"END":
+                break
+            value = header[8:].split(b"/")[0].strip()
+            if value.startswith(b"="):
+                value = value[1:].strip()
+            if not headers and (not _accept(keyword) or value != b"T"):
+                msg = "Not a FITS file"
+                raise SyntaxError(msg)
+            headers[keyword] = value
+
+        naxis = int(headers[b"NAXIS"])
+        if naxis == 0:
+            msg = "No image data"
+            raise ValueError(msg)
+        elif naxis == 1:
+            self._size = 1, int(headers[b"NAXIS1"])
+        else:
+            self._size = int(headers[b"NAXIS1"]), int(headers[b"NAXIS2"])
+
+        number_of_bits = int(headers[b"BITPIX"])
+        if number_of_bits == 8:
+            self.mode = "L"
+        elif number_of_bits == 16:
+            self.mode = "I"
+            # rawmode = "I;16S"
+        elif number_of_bits == 32:
+            self.mode = "I"
+        elif number_of_bits in (-32, -64):
+            self.mode = "F"
+            # rawmode = "F" if number_of_bits == -32 else "F;64F"
+
+        offset = math.ceil(self.fp.tell() / 2880) * 2880
+        self.tile = [("raw", (0, 0) + self.size, offset, (self.mode, 0, -1))]
+
+
+# --------------------------------------------------------------------
+# Registry
+
+Image.register_open(FitsImageFile.format, FitsImageFile, _accept)
+
+Image.register_extensions(FitsImageFile.format, [".fit", ".fits"])

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/FliImagePlugin.py

@@ -0,0 +1,171 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# FLI/FLC file handling.
+#
+# History:
+#       95-09-01 fl     Created
+#       97-01-03 fl     Fixed parser, setup decoder tile
+#       98-07-15 fl     Renamed offset attribute to avoid name clash
+#
+# Copyright (c) Secret Labs AB 1997-98.
+# Copyright (c) Fredrik Lundh 1995-97.
+#
+# See the README file for information on usage and redistribution.
+#
+
+import os
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import i16le as i16
+from ._binary import i32le as i32
+from ._binary import o8
+
+#
+# decoder
+
+
+def _accept(prefix):
+    return (
+        len(prefix) >= 6
+        and i16(prefix, 4) in [0xAF11, 0xAF12]
+        and i16(prefix, 14) in [0, 3]  # flags
+    )
+
+
+##
+# Image plugin for the FLI/FLC animation format.  Use the <b>seek</b>
+# method to load individual frames.
+
+
+class FliImageFile(ImageFile.ImageFile):
+    format = "FLI"
+    format_description = "Autodesk FLI/FLC Animation"
+    _close_exclusive_fp_after_loading = False
+
+    def _open(self):
+        # HEAD
+        s = self.fp.read(128)
+        if not (_accept(s) and s[20:22] == b"\x00\x00"):
+            msg = "not an FLI/FLC file"
+            raise SyntaxError(msg)
+
+        # frames
+        self.n_frames = i16(s, 6)
+        self.is_animated = self.n_frames > 1
+
+        # image characteristics
+        self.mode = "P"
+        self._size = i16(s, 8), i16(s, 10)
+
+        # animation speed
+        duration = i32(s, 16)
+        magic = i16(s, 4)
+        if magic == 0xAF11:
+            duration = (duration * 1000) // 70
+        self.info["duration"] = duration
+
+        # look for palette
+        palette = [(a, a, a) for a in range(256)]
+
+        s = self.fp.read(16)
+
+        self.__offset = 128
+
+        if i16(s, 4) == 0xF100:
+            # prefix chunk; ignore it
+            self.__offset = self.__offset + i32(s)
+            s = self.fp.read(16)
+
+        if i16(s, 4) == 0xF1FA:
+            # look for palette chunk
+            number_of_subchunks = i16(s, 6)
+            chunk_size = None
+            for _ in range(number_of_subchunks):
+                if chunk_size is not None:
+                    self.fp.seek(chunk_size - 6, os.SEEK_CUR)
+                s = self.fp.read(6)
+                chunk_type = i16(s, 4)
+                if chunk_type in (4, 11):
+                    self._palette(palette, 2 if chunk_type == 11 else 0)
+                    break
+                chunk_size = i32(s)
+                if not chunk_size:
+                    break
+
+        palette = [o8(r) + o8(g) + o8(b) for (r, g, b) in palette]
+        self.palette = ImagePalette.raw("RGB", b"".join(palette))
+
+        # set things up to decode first frame
+        self.__frame = -1
+        self._fp = self.fp
+        self.__rewind = self.fp.tell()
+        self.seek(0)
+
+    def _palette(self, palette, shift):
+        # load palette
+
+        i = 0
+        for e in range(i16(self.fp.read(2))):
+            s = self.fp.read(2)
+            i = i + s[0]
+            n = s[1]
+            if n == 0:
+                n = 256
+            s = self.fp.read(n * 3)
+            for n in range(0, len(s), 3):
+                r = s[n] << shift
+                g = s[n + 1] << shift
+                b = s[n + 2] << shift
+                palette[i] = (r, g, b)
+                i += 1
+
+    def seek(self, frame):
+        if not self._seek_check(frame):
+            return
+        if frame < self.__frame:
+            self._seek(0)
+
+        for f in range(self.__frame + 1, frame + 1):
+            self._seek(f)
+
+    def _seek(self, frame):
+        if frame == 0:
+            self.__frame = -1
+            self._fp.seek(self.__rewind)
+            self.__offset = 128
+        else:
+            # ensure that the previous frame was loaded
+            self.load()
+
+        if frame != self.__frame + 1:
+            msg = f"cannot seek to frame {frame}"
+            raise ValueError(msg)
+        self.__frame = frame
+
+        # move to next frame
+        self.fp = self._fp
+        self.fp.seek(self.__offset)
+
+        s = self.fp.read(4)
+        if not s:
+            raise EOFError
+
+        framesize = i32(s)
+
+        self.decodermaxblock = framesize
+        self.tile = [("fli", (0, 0) + self.size, self.__offset, None)]
+
+        self.__offset += framesize
+
+    def tell(self):
+        return self.__frame
+
+
+#
+# registry
+
+Image.register_open(FliImageFile.format, FliImageFile, _accept)
+
+Image.register_extensions(FliImageFile.format, [".fli", ".flc"])

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/FontFile.py

@@ -0,0 +1,110 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# base class for raster font file parsers
+#
+# history:
+# 1997-06-05 fl   created
+# 1997-08-19 fl   restrict image width
+#
+# Copyright (c) 1997-1998 by Secret Labs AB
+# Copyright (c) 1997-1998 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+import os
+
+from . import Image, _binary
+
+WIDTH = 800
+
+
+def puti16(fp, values):
+    """Write network order (big-endian) 16-bit sequence"""
+    for v in values:
+        if v < 0:
+            v += 65536
+        fp.write(_binary.o16be(v))
+
+
+class FontFile:
+    """Base class for raster font file handlers."""
+
+    bitmap = None
+
+    def __init__(self):
+        self.info = {}
+        self.glyph = [None] * 256
+
+    def __getitem__(self, ix):
+        return self.glyph[ix]
+
+    def compile(self):
+        """Create metrics and bitmap"""
+
+        if self.bitmap:
+            return
+
+        # create bitmap large enough to hold all data
+        h = w = maxwidth = 0
+        lines = 1
+        for glyph in self:
+            if glyph:
+                d, dst, src, im = glyph
+                h = max(h, src[3] - src[1])
+                w = w + (src[2] - src[0])
+                if w > WIDTH:
+                    lines += 1
+                    w = src[2] - src[0]
+                maxwidth = max(maxwidth, w)
+
+        xsize = maxwidth
+        ysize = lines * h
+
+        if xsize == 0 and ysize == 0:
+            return ""
+
+        self.ysize = h
+
+        # paste glyphs into bitmap
+        self.bitmap = Image.new("1", (xsize, ysize))
+        self.metrics = [None] * 256
+        x = y = 0
+        for i in range(256):
+            glyph = self[i]
+            if glyph:
+                d, dst, src, im = glyph
+                xx = src[2] - src[0]
+                # yy = src[3] - src[1]
+                x0, y0 = x, y
+                x = x + xx
+                if x > WIDTH:
+                    x, y = 0, y + h
+                    x0, y0 = x, y
+                    x = xx
+                s = src[0] + x0, src[1] + y0, src[2] + x0, src[3] + y0
+                self.bitmap.paste(im.crop(src), s)
+                self.metrics[i] = d, dst, s
+
+    def save(self, filename):
+        """Save font"""
+
+        self.compile()
+
+        # font data
+        self.bitmap.save(os.path.splitext(filename)[0] + ".pbm", "PNG")
+
+        # font metrics
+        with open(os.path.splitext(filename)[0] + ".pil", "wb") as fp:
+            fp.write(b"PILfont\n")
+            fp.write(f";;;;;;{self.ysize};\n".encode("ascii"))  # HACK!!!
+            fp.write(b"DATA\n")
+            for id in range(256):
+                m = self.metrics[id]
+                if not m:
+                    puti16(fp, [0] * 10)
+                else:
+                    puti16(fp, m[0] + m[1] + m[2])

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/FpxImagePlugin.py

@@ -0,0 +1,253 @@
+#
+# THIS IS WORK IN PROGRESS
+#
+# The Python Imaging Library.
+# $Id$
+#
+# FlashPix support for PIL
+#
+# History:
+# 97-01-25 fl   Created (reads uncompressed RGB images only)
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1997.
+#
+# See the README file for information on usage and redistribution.
+#
+import olefile
+
+from . import Image, ImageFile
+from ._binary import i32le as i32
+
+# we map from colour field tuples to (mode, rawmode) descriptors
+MODES = {
+    # opacity
+    (0x00007FFE,): ("A", "L"),
+    # monochrome
+    (0x00010000,): ("L", "L"),
+    (0x00018000, 0x00017FFE): ("RGBA", "LA"),
+    # photo YCC
+    (0x00020000, 0x00020001, 0x00020002): ("RGB", "YCC;P"),
+    (0x00028000, 0x00028001, 0x00028002, 0x00027FFE): ("RGBA", "YCCA;P"),
+    # standard RGB (NIFRGB)
+    (0x00030000, 0x00030001, 0x00030002): ("RGB", "RGB"),
+    (0x00038000, 0x00038001, 0x00038002, 0x00037FFE): ("RGBA", "RGBA"),
+}
+
+
+#
+# --------------------------------------------------------------------
+
+
+def _accept(prefix):
+    return prefix[:8] == olefile.MAGIC
+
+
+##
+# Image plugin for the FlashPix images.
+
+
+class FpxImageFile(ImageFile.ImageFile):
+    format = "FPX"
+    format_description = "FlashPix"
+
+    def _open(self):
+        #
+        # read the OLE directory and see if this is a likely
+        # to be a FlashPix file
+
+        try:
+            self.ole = olefile.OleFileIO(self.fp)
+        except OSError as e:
+            msg = "not an FPX file; invalid OLE file"
+            raise SyntaxError(msg) from e
+
+        if self.ole.root.clsid != "56616700-C154-11CE-8553-00AA00A1F95B":
+            msg = "not an FPX file; bad root CLSID"
+            raise SyntaxError(msg)
+
+        self._open_index(1)
+
+    def _open_index(self, index=1):
+        #
+        # get the Image Contents Property Set
+
+        prop = self.ole.getproperties(
+            [f"Data Object Store {index:06d}", "\005Image Contents"]
+        )
+
+        # size (highest resolution)
+
+        self._size = prop[0x1000002], prop[0x1000003]
+
+        size = max(self.size)
+        i = 1
+        while size > 64:
+            size = size / 2
+            i += 1
+        self.maxid = i - 1
+
+        # mode.  instead of using a single field for this, flashpix
+        # requires you to specify the mode for each channel in each
+        # resolution subimage, and leaves it to the decoder to make
+        # sure that they all match.  for now, we'll cheat and assume
+        # that this is always the case.
+
+        id = self.maxid << 16
+
+        s = prop[0x2000002 | id]
+
+        colors = []
+        bands = i32(s, 4)
+        if bands > 4:
+            msg = "Invalid number of bands"
+            raise OSError(msg)
+        for i in range(bands):
+            # note: for now, we ignore the "uncalibrated" flag
+            colors.append(i32(s, 8 + i * 4) & 0x7FFFFFFF)
+
+        self.mode, self.rawmode = MODES[tuple(colors)]
+
+        # load JPEG tables, if any
+        self.jpeg = {}
+        for i in range(256):
+            id = 0x3000001 | (i << 16)
+            if id in prop:
+                self.jpeg[i] = prop[id]
+
+        self._open_subimage(1, self.maxid)
+
+    def _open_subimage(self, index=1, subimage=0):
+        #
+        # setup tile descriptors for a given subimage
+
+        stream = [
+            f"Data Object Store {index:06d}",
+            f"Resolution {subimage:04d}",
+            "Subimage 0000 Header",
+        ]
+
+        fp = self.ole.openstream(stream)
+
+        # skip prefix
+        fp.read(28)
+
+        # header stream
+        s = fp.read(36)
+
+        size = i32(s, 4), i32(s, 8)
+        # tilecount = i32(s, 12)
+        tilesize = i32(s, 16), i32(s, 20)
+        # channels = i32(s, 24)
+        offset = i32(s, 28)
+        length = i32(s, 32)
+
+        if size != self.size:
+            msg = "subimage mismatch"
+            raise OSError(msg)
+
+        # get tile descriptors
+        fp.seek(28 + offset)
+        s = fp.read(i32(s, 12) * length)
+
+        x = y = 0
+        xsize, ysize = size
+        xtile, ytile = tilesize
+        self.tile = []
+
+        for i in range(0, len(s), length):
+            x1 = min(xsize, x + xtile)
+            y1 = min(ysize, y + ytile)
+
+            compression = i32(s, i + 8)
+
+            if compression == 0:
+                self.tile.append(
+                    (
+                        "raw",
+                        (x, y, x1, y1),
+                        i32(s, i) + 28,
+                        (self.rawmode,),
+                    )
+                )
+
+            elif compression == 1:
+                # FIXME: the fill decoder is not implemented
+                self.tile.append(
+                    (
+                        "fill",
+                        (x, y, x1, y1),
+                        i32(s, i) + 28,
+                        (self.rawmode, s[12:16]),
+                    )
+                )
+
+            elif compression == 2:
+                internal_color_conversion = s[14]
+                jpeg_tables = s[15]
+                rawmode = self.rawmode
+
+                if internal_color_conversion:
+                    # The image is stored as usual (usually YCbCr).
+                    if rawmode == "RGBA":
+                        # For "RGBA", data is stored as YCbCrA based on
+                        # negative RGB. The following trick works around
+                        # this problem :
+                        jpegmode, rawmode = "YCbCrK", "CMYK"
+                    else:
+                        jpegmode = None  # let the decoder decide
+
+                else:
+                    # The image is stored as defined by rawmode
+                    jpegmode = rawmode
+
+                self.tile.append(
+                    (
+                        "jpeg",
+                        (x, y, x1, y1),
+                        i32(s, i) + 28,
+                        (rawmode, jpegmode),
+                    )
+                )
+
+                # FIXME: jpeg tables are tile dependent; the prefix
+                # data must be placed in the tile descriptor itself!
+
+                if jpeg_tables:
+                    self.tile_prefix = self.jpeg[jpeg_tables]
+
+            else:
+                msg = "unknown/invalid compression"
+                raise OSError(msg)
+
+            x = x + xtile
+            if x >= xsize:
+                x, y = 0, y + ytile
+                if y >= ysize:
+                    break  # isn't really required
+
+        self.stream = stream
+        self.fp = None
+
+    def load(self):
+        if not self.fp:
+            self.fp = self.ole.openstream(self.stream[:2] + ["Subimage 0000 Data"])
+
+        return ImageFile.ImageFile.load(self)
+
+    def close(self):
+        self.ole.close()
+        super().close()
+
+    def __exit__(self, *args):
+        self.ole.close()
+        super().__exit__()
+
+
+#
+# --------------------------------------------------------------------
+
+
+Image.register_open(FpxImageFile.format, FpxImageFile, _accept)
+
+Image.register_extension(FpxImageFile.format, ".fpx")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/FtexImagePlugin.py

@@ -0,0 +1,113 @@
+"""
+A Pillow loader for .ftc and .ftu files (FTEX)
+Jerome Leclanche <jerome@leclan.ch>
+
+The contents of this file are hereby released in the public domain (CC0)
+Full text of the CC0 license:
+  https://creativecommons.org/publicdomain/zero/1.0/
+
+Independence War 2: Edge Of Chaos - Texture File Format - 16 October 2001
+
+The textures used for 3D objects in Independence War 2: Edge Of Chaos are in a
+packed custom format called FTEX. This file format uses file extensions FTC
+and FTU.
+* FTC files are compressed textures (using standard texture compression).
+* FTU files are not compressed.
+Texture File Format
+The FTC and FTU texture files both use the same format. This
+has the following structure:
+{header}
+{format_directory}
+{data}
+Where:
+{header} = {
+    u32:magic,
+    u32:version,
+    u32:width,
+    u32:height,
+    u32:mipmap_count,
+    u32:format_count
+}
+
+* The "magic" number is "FTEX".
+* "width" and "height" are the dimensions of the texture.
+* "mipmap_count" is the number of mipmaps in the texture.
+* "format_count" is the number of texture formats (different versions of the
+same texture) in this file.
+
+{format_directory} = format_count * { u32:format, u32:where }
+
+The format value is 0 for DXT1 compressed textures and 1 for 24-bit RGB
+uncompressed textures.
+The texture data for a format starts at the position "where" in the file.
+
+Each set of texture data in the file has the following structure:
+{data} = format_count * { u32:mipmap_size, mipmap_size * { u8 } }
+* "mipmap_size" is the number of bytes in that mip level. For compressed
+textures this is the size of the texture data compressed with DXT1. For 24 bit
+uncompressed textures, this is 3 * width * height. Following this are the image
+bytes for that mipmap level.
+
+Note: All data is stored in little-Endian (Intel) byte order.
+"""
+
+import struct
+from enum import IntEnum
+from io import BytesIO
+
+from . import Image, ImageFile
+
+MAGIC = b"FTEX"
+
+
+class Format(IntEnum):
+    DXT1 = 0
+    UNCOMPRESSED = 1
+
+
+class FtexImageFile(ImageFile.ImageFile):
+    format = "FTEX"
+    format_description = "Texture File Format (IW2:EOC)"
+
+    def _open(self):
+        if not _accept(self.fp.read(4)):
+            msg = "not an FTEX file"
+            raise SyntaxError(msg)
+        struct.unpack("<i", self.fp.read(4))  # version
+        self._size = struct.unpack("<2i", self.fp.read(8))
+        mipmap_count, format_count = struct.unpack("<2i", self.fp.read(8))
+
+        self.mode = "RGB"
+
+        # Only support single-format files.
+        # I don't know of any multi-format file.
+        assert format_count == 1
+
+        format, where = struct.unpack("<2i", self.fp.read(8))
+        self.fp.seek(where)
+        (mipmap_size,) = struct.unpack("<i", self.fp.read(4))
+
+        data = self.fp.read(mipmap_size)
+
+        if format == Format.DXT1:
+            self.mode = "RGBA"
+            self.tile = [("bcn", (0, 0) + self.size, 0, 1)]
+        elif format == Format.UNCOMPRESSED:
+            self.tile = [("raw", (0, 0) + self.size, 0, ("RGB", 0, 1))]
+        else:
+            msg = f"Invalid texture compression format: {repr(format)}"
+            raise ValueError(msg)
+
+        self.fp.close()
+        self.fp = BytesIO(data)
+
+    def load_seek(self, pos):
+        pass
+
+
+def _accept(prefix):
+    return prefix[:4] == MAGIC
+
+
+Image.register_open(FtexImageFile.format, FtexImageFile, _accept)
+Image.register_extensions(FtexImageFile.format, [".ftc", ".ftu"])

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/GbrImagePlugin.py

@@ -0,0 +1,102 @@
+#
+# The Python Imaging Library
+#
+# load a GIMP brush file
+#
+# History:
+#       96-03-14 fl     Created
+#       16-01-08 es     Version 2
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1996.
+# Copyright (c) Eric Soroos 2016.
+#
+# See the README file for information on usage and redistribution.
+#
+#
+# See https://github.com/GNOME/gimp/blob/mainline/devel-docs/gbr.txt for
+# format documentation.
+#
+# This code Interprets version 1 and 2 .gbr files.
+# Version 1 files are obsolete, and should not be used for new
+#   brushes.
+# Version 2 files are saved by GIMP v2.8 (at least)
+# Version 3 files have a format specifier of 18 for 16bit floats in
+#   the color depth field. This is currently unsupported by Pillow.
+
+from . import Image, ImageFile
+from ._binary import i32be as i32
+
+
+def _accept(prefix):
+    return len(prefix) >= 8 and i32(prefix, 0) >= 20 and i32(prefix, 4) in (1, 2)
+
+
+##
+# Image plugin for the GIMP brush format.
+
+
+class GbrImageFile(ImageFile.ImageFile):
+    format = "GBR"
+    format_description = "GIMP brush file"
+
+    def _open(self):
+        header_size = i32(self.fp.read(4))
+        if header_size < 20:
+            msg = "not a GIMP brush"
+            raise SyntaxError(msg)
+        version = i32(self.fp.read(4))
+        if version not in (1, 2):
+            msg = f"Unsupported GIMP brush version: {version}"
+            raise SyntaxError(msg)
+
+        width = i32(self.fp.read(4))
+        height = i32(self.fp.read(4))
+        color_depth = i32(self.fp.read(4))
+        if width <= 0 or height <= 0:
+            msg = "not a GIMP brush"
+            raise SyntaxError(msg)
+        if color_depth not in (1, 4):
+            msg = f"Unsupported GIMP brush color depth: {color_depth}"
+            raise SyntaxError(msg)
+
+        if version == 1:
+            comment_length = header_size - 20
+        else:
+            comment_length = header_size - 28
+            magic_number = self.fp.read(4)
+            if magic_number != b"GIMP":
+                msg = "not a GIMP brush, bad magic number"
+                raise SyntaxError(msg)
+            self.info["spacing"] = i32(self.fp.read(4))
+
+        comment = self.fp.read(comment_length)[:-1]
+
+        if color_depth == 1:
+            self.mode = "L"
+        else:
+            self.mode = "RGBA"
+
+        self._size = width, height
+
+        self.info["comment"] = comment
+
+        # Image might not be small
+        Image._decompression_bomb_check(self.size)
+
+        # Data is an uncompressed block of w * h * bytes/pixel
+        self._data_size = width * height * color_depth
+
+    def load(self):
+        if not self.im:
+            self.im = Image.core.new(self.mode, self.size)
+            self.frombytes(self.fp.read(self._data_size))
+        return Image.Image.load(self)
+
+
+#
+# registry
+
+
+Image.register_open(GbrImageFile.format, GbrImageFile, _accept)
+Image.register_extension(GbrImageFile.format, ".gbr")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/GdImageFile.py

@@ -0,0 +1,97 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# GD file handling
+#
+# History:
+# 1996-04-12 fl   Created
+#
+# Copyright (c) 1997 by Secret Labs AB.
+# Copyright (c) 1996 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+"""
+.. note::
+    This format cannot be automatically recognized, so the
+    class is not registered for use with :py:func:`PIL.Image.open()`.  To open a
+    gd file, use the :py:func:`PIL.GdImageFile.open()` function instead.
+
+.. warning::
+    THE GD FORMAT IS NOT DESIGNED FOR DATA INTERCHANGE.  This
+    implementation is provided for convenience and demonstrational
+    purposes only.
+"""
+
+
+from . import ImageFile, ImagePalette, UnidentifiedImageError
+from ._binary import i16be as i16
+from ._binary import i32be as i32
+
+
+class GdImageFile(ImageFile.ImageFile):
+    """
+    Image plugin for the GD uncompressed format.  Note that this format
+    is not supported by the standard :py:func:`PIL.Image.open()` function.  To use
+    this plugin, you have to import the :py:mod:`PIL.GdImageFile` module and
+    use the :py:func:`PIL.GdImageFile.open()` function.
+    """
+
+    format = "GD"
+    format_description = "GD uncompressed images"
+
+    def _open(self):
+        # Header
+        s = self.fp.read(1037)
+
+        if i16(s) not in [65534, 65535]:
+            msg = "Not a valid GD 2.x .gd file"
+            raise SyntaxError(msg)
+
+        self.mode = "L"  # FIXME: "P"
+        self._size = i16(s, 2), i16(s, 4)
+
+        true_color = s[6]
+        true_color_offset = 2 if true_color else 0
+
+        # transparency index
+        tindex = i32(s, 7 + true_color_offset)
+        if tindex < 256:
+            self.info["transparency"] = tindex
+
+        self.palette = ImagePalette.raw(
+            "XBGR", s[7 + true_color_offset + 4 : 7 + true_color_offset + 4 + 256 * 4]
+        )
+
+        self.tile = [
+            (
+                "raw",
+                (0, 0) + self.size,
+                7 + true_color_offset + 4 + 256 * 4,
+                ("L", 0, 1),
+            )
+        ]
+
+
+def open(fp, mode="r"):
+    """
+    Load texture from a GD image file.
+
+    :param fp: GD file name, or an opened file handle.
+    :param mode: Optional mode.  In this version, if the mode argument
+        is given, it must be "r".
+    :returns: An image instance.
+    :raises OSError: If the image could not be read.
+    """
+    if mode != "r":
+        msg = "bad mode"
+        raise ValueError(msg)
+
+    try:
+        return GdImageFile(fp)
+    except SyntaxError as e:
+        msg = "cannot identify this image file"
+        raise UnidentifiedImageError(msg) from e

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/GimpGradientFile.py

@@ -0,0 +1,137 @@
+#
+# Python Imaging Library
+# $Id$
+#
+# stuff to read (and render) GIMP gradient files
+#
+# History:
+#       97-08-23 fl     Created
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1997.
+#
+# See the README file for information on usage and redistribution.
+#
+
+"""
+Stuff to translate curve segments to palette values (derived from
+the corresponding code in GIMP, written by Federico Mena Quintero.
+See the GIMP distribution for more information.)
+"""
+
+
+from math import log, pi, sin, sqrt
+
+from ._binary import o8
+
+EPSILON = 1e-10
+""""""  # Enable auto-doc for data member
+
+
+def linear(middle, pos):
+    if pos <= middle:
+        if middle < EPSILON:
+            return 0.0
+        else:
+            return 0.5 * pos / middle
+    else:
+        pos = pos - middle
+        middle = 1.0 - middle
+        if middle < EPSILON:
+            return 1.0
+        else:
+            return 0.5 + 0.5 * pos / middle
+
+
+def curved(middle, pos):
+    return pos ** (log(0.5) / log(max(middle, EPSILON)))
+
+
+def sine(middle, pos):
+    return (sin((-pi / 2.0) + pi * linear(middle, pos)) + 1.0) / 2.0
+
+
+def sphere_increasing(middle, pos):
+    return sqrt(1.0 - (linear(middle, pos) - 1.0) ** 2)
+
+
+def sphere_decreasing(middle, pos):
+    return 1.0 - sqrt(1.0 - linear(middle, pos) ** 2)
+
+
+SEGMENTS = [linear, curved, sine, sphere_increasing, sphere_decreasing]
+""""""  # Enable auto-doc for data member
+
+
+class GradientFile:
+    gradient = None
+
+    def getpalette(self, entries=256):
+        palette = []
+
+        ix = 0
+        x0, x1, xm, rgb0, rgb1, segment = self.gradient[ix]
+
+        for i in range(entries):
+            x = i / (entries - 1)
+
+            while x1 < x:
+                ix += 1
+                x0, x1, xm, rgb0, rgb1, segment = self.gradient[ix]
+
+            w = x1 - x0
+
+            if w < EPSILON:
+                scale = segment(0.5, 0.5)
+            else:
+                scale = segment((xm - x0) / w, (x - x0) / w)
+
+            # expand to RGBA
+            r = o8(int(255 * ((rgb1[0] - rgb0[0]) * scale + rgb0[0]) + 0.5))
+            g = o8(int(255 * ((rgb1[1] - rgb0[1]) * scale + rgb0[1]) + 0.5))
+            b = o8(int(255 * ((rgb1[2] - rgb0[2]) * scale + rgb0[2]) + 0.5))
+            a = o8(int(255 * ((rgb1[3] - rgb0[3]) * scale + rgb0[3]) + 0.5))
+
+            # add to palette
+            palette.append(r + g + b + a)
+
+        return b"".join(palette), "RGBA"
+
+
+class GimpGradientFile(GradientFile):
+    """File handler for GIMP's gradient format."""
+
+    def __init__(self, fp):
+        if fp.readline()[:13] != b"GIMP Gradient":
+            msg = "not a GIMP gradient file"
+            raise SyntaxError(msg)
+
+        line = fp.readline()
+
+        # GIMP 1.2 gradient files don't contain a name, but GIMP 1.3 files do
+        if line.startswith(b"Name: "):
+            line = fp.readline().strip()
+
+        count = int(line)
+
+        gradient = []
+
+        for i in range(count):
+            s = fp.readline().split()
+            w = [float(x) for x in s[:11]]
+
+            x0, x1 = w[0], w[2]
+            xm = w[1]
+            rgb0 = w[3:7]
+            rgb1 = w[7:11]
+
+            segment = SEGMENTS[int(s[11])]
+            cspace = int(s[12])
+
+            if cspace != 0:
+                msg = "cannot handle HSV colour space"
+                raise OSError(msg)
+
+            gradient.append((x0, x1, xm, rgb0, rgb1, segment))
+
+        self.gradient = gradient

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/GimpPaletteFile.py

@@ -0,0 +1,56 @@
+#
+# Python Imaging Library
+# $Id$
+#
+# stuff to read GIMP palette files
+#
+# History:
+# 1997-08-23 fl     Created
+# 2004-09-07 fl     Support GIMP 2.0 palette files.
+#
+# Copyright (c) Secret Labs AB 1997-2004.  All rights reserved.
+# Copyright (c) Fredrik Lundh 1997-2004.
+#
+# See the README file for information on usage and redistribution.
+#
+
+import re
+
+from ._binary import o8
+
+
+class GimpPaletteFile:
+    """File handler for GIMP's palette format."""
+
+    rawmode = "RGB"
+
+    def __init__(self, fp):
+        self.palette = [o8(i) * 3 for i in range(256)]
+
+        if fp.readline()[:12] != b"GIMP Palette":
+            msg = "not a GIMP palette file"
+            raise SyntaxError(msg)
+
+        for i in range(256):
+            s = fp.readline()
+            if not s:
+                break
+
+            # skip fields and comment lines
+            if re.match(rb"\w+:|#", s):
+                continue
+            if len(s) > 100:
+                msg = "bad palette file"
+                raise SyntaxError(msg)
+
+            v = tuple(map(int, s.split()[:3]))
+            if len(v) != 3:
+                msg = "bad palette entry"
+                raise ValueError(msg)
+
+            self.palette[i] = o8(v[0]) + o8(v[1]) + o8(v[2])
+
+        self.palette = b"".join(self.palette)
+
+    def getpalette(self):
+        return self.palette, self.rawmode

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/GribStubImagePlugin.py

@@ -0,0 +1,73 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# GRIB stub adapter
+#
+# Copyright (c) 1996-2003 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+from . import Image, ImageFile
+
+_handler = None
+
+
+def register_handler(handler):
+    """
+    Install application-specific GRIB image handler.
+
+    :param handler: Handler object.
+    """
+    global _handler
+    _handler = handler
+
+
+# --------------------------------------------------------------------
+# Image adapter
+
+
+def _accept(prefix):
+    return prefix[:4] == b"GRIB" and prefix[7] == 1
+
+
+class GribStubImageFile(ImageFile.StubImageFile):
+    format = "GRIB"
+    format_description = "GRIB"
+
+    def _open(self):
+        offset = self.fp.tell()
+
+        if not _accept(self.fp.read(8)):
+            msg = "Not a GRIB file"
+            raise SyntaxError(msg)
+
+        self.fp.seek(offset)
+
+        # make something up
+        self.mode = "F"
+        self._size = 1, 1
+
+        loader = self._load()
+        if loader:
+            loader.open(self)
+
+    def _load(self):
+        return _handler
+
+
+def _save(im, fp, filename):
+    if _handler is None or not hasattr(_handler, "save"):
+        msg = "GRIB save handler not installed"
+        raise OSError(msg)
+    _handler.save(im, fp, filename)
+
+
+# --------------------------------------------------------------------
+# Registry
+
+Image.register_open(GribStubImageFile.format, GribStubImageFile, _accept)
+Image.register_save(GribStubImageFile.format, _save)
+
+Image.register_extension(GribStubImageFile.format, ".grib")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/Hdf5StubImagePlugin.py

@@ -0,0 +1,73 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# HDF5 stub adapter
+#
+# Copyright (c) 2000-2003 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+from . import Image, ImageFile
+
+_handler = None
+
+
+def register_handler(handler):
+    """
+    Install application-specific HDF5 image handler.
+
+    :param handler: Handler object.
+    """
+    global _handler
+    _handler = handler
+
+
+# --------------------------------------------------------------------
+# Image adapter
+
+
+def _accept(prefix):
+    return prefix[:8] == b"\x89HDF\r\n\x1a\n"
+
+
+class HDF5StubImageFile(ImageFile.StubImageFile):
+    format = "HDF5"
+    format_description = "HDF5"
+
+    def _open(self):
+        offset = self.fp.tell()
+
+        if not _accept(self.fp.read(8)):
+            msg = "Not an HDF file"
+            raise SyntaxError(msg)
+
+        self.fp.seek(offset)
+
+        # make something up
+        self.mode = "F"
+        self._size = 1, 1
+
+        loader = self._load()
+        if loader:
+            loader.open(self)
+
+    def _load(self):
+        return _handler
+
+
+def _save(im, fp, filename):
+    if _handler is None or not hasattr(_handler, "save"):
+        msg = "HDF5 save handler not installed"
+        raise OSError(msg)
+    _handler.save(im, fp, filename)
+
+
+# --------------------------------------------------------------------
+# Registry
+
+Image.register_open(HDF5StubImageFile.format, HDF5StubImageFile, _accept)
+Image.register_save(HDF5StubImageFile.format, _save)
+
+Image.register_extensions(HDF5StubImageFile.format, [".h5", ".hdf"])

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/IcnsImagePlugin.py

@@ -0,0 +1,399 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# macOS icns file decoder, based on icns.py by Bob Ippolito.
+#
+# history:
+# 2004-10-09 fl   Turned into a PIL plugin; removed 2.3 dependencies.
+# 2020-04-04      Allow saving on all operating systems.
+#
+# Copyright (c) 2004 by Bob Ippolito.
+# Copyright (c) 2004 by Secret Labs.
+# Copyright (c) 2004 by Fredrik Lundh.
+# Copyright (c) 2014 by Alastair Houghton.
+# Copyright (c) 2020 by Pan Jing.
+#
+# See the README file for information on usage and redistribution.
+#
+
+import io
+import os
+import struct
+import sys
+
+from . import Image, ImageFile, PngImagePlugin, features
+
+enable_jpeg2k = features.check_codec("jpg_2000")
+if enable_jpeg2k:
+    from . import Jpeg2KImagePlugin
+
+MAGIC = b"icns"
+HEADERSIZE = 8
+
+
+def nextheader(fobj):
+    return struct.unpack(">4sI", fobj.read(HEADERSIZE))
+
+
+def read_32t(fobj, start_length, size):
+    # The 128x128 icon seems to have an extra header for some reason.
+    (start, length) = start_length
+    fobj.seek(start)
+    sig = fobj.read(4)
+    if sig != b"\x00\x00\x00\x00":
+        msg = "Unknown signature, expecting 0x00000000"
+        raise SyntaxError(msg)
+    return read_32(fobj, (start + 4, length - 4), size)
+
+
+def read_32(fobj, start_length, size):
+    """
+    Read a 32bit RGB icon resource.  Seems to be either uncompressed or
+    an RLE packbits-like scheme.
+    """
+    (start, length) = start_length
+    fobj.seek(start)
+    pixel_size = (size[0] * size[2], size[1] * size[2])
+    sizesq = pixel_size[0] * pixel_size[1]
+    if length == sizesq * 3:
+        # uncompressed ("RGBRGBGB")
+        indata = fobj.read(length)
+        im = Image.frombuffer("RGB", pixel_size, indata, "raw", "RGB", 0, 1)
+    else:
+        # decode image
+        im = Image.new("RGB", pixel_size, None)
+        for band_ix in range(3):
+            data = []
+            bytesleft = sizesq
+            while bytesleft > 0:
+                byte = fobj.read(1)
+                if not byte:
+                    break
+                byte = byte[0]
+                if byte & 0x80:
+                    blocksize = byte - 125
+                    byte = fobj.read(1)
+                    for i in range(blocksize):
+                        data.append(byte)
+                else:
+                    blocksize = byte + 1
+                    data.append(fobj.read(blocksize))
+                bytesleft -= blocksize
+                if bytesleft <= 0:
+                    break
+            if bytesleft != 0:
+                msg = f"Error reading channel [{repr(bytesleft)} left]"
+                raise SyntaxError(msg)
+            band = Image.frombuffer("L", pixel_size, b"".join(data), "raw", "L", 0, 1)
+            im.im.putband(band.im, band_ix)
+    return {"RGB": im}
+
+
+def read_mk(fobj, start_length, size):
+    # Alpha masks seem to be uncompressed
+    start = start_length[0]
+    fobj.seek(start)
+    pixel_size = (size[0] * size[2], size[1] * size[2])
+    sizesq = pixel_size[0] * pixel_size[1]
+    band = Image.frombuffer("L", pixel_size, fobj.read(sizesq), "raw", "L", 0, 1)
+    return {"A": band}
+
+
+def read_png_or_jpeg2000(fobj, start_length, size):
+    (start, length) = start_length
+    fobj.seek(start)
+    sig = fobj.read(12)
+    if sig[:8] == b"\x89PNG\x0d\x0a\x1a\x0a":
+        fobj.seek(start)
+        im = PngImagePlugin.PngImageFile(fobj)
+        Image._decompression_bomb_check(im.size)
+        return {"RGBA": im}
+    elif (
+        sig[:4] == b"\xff\x4f\xff\x51"
+        or sig[:4] == b"\x0d\x0a\x87\x0a"
+        or sig == b"\x00\x00\x00\x0cjP  \x0d\x0a\x87\x0a"
+    ):
+        if not enable_jpeg2k:
+            msg = (
+                "Unsupported icon subimage format (rebuild PIL "
+                "with JPEG 2000 support to fix this)"
+            )
+            raise ValueError(msg)
+        # j2k, jpc or j2c
+        fobj.seek(start)
+        jp2kstream = fobj.read(length)
+        f = io.BytesIO(jp2kstream)
+        im = Jpeg2KImagePlugin.Jpeg2KImageFile(f)
+        Image._decompression_bomb_check(im.size)
+        if im.mode != "RGBA":
+            im = im.convert("RGBA")
+        return {"RGBA": im}
+    else:
+        msg = "Unsupported icon subimage format"
+        raise ValueError(msg)
+
+
+class IcnsFile:
+    SIZES = {
+        (512, 512, 2): [(b"ic10", read_png_or_jpeg2000)],
+        (512, 512, 1): [(b"ic09", read_png_or_jpeg2000)],
+        (256, 256, 2): [(b"ic14", read_png_or_jpeg2000)],
+        (256, 256, 1): [(b"ic08", read_png_or_jpeg2000)],
+        (128, 128, 2): [(b"ic13", read_png_or_jpeg2000)],
+        (128, 128, 1): [
+            (b"ic07", read_png_or_jpeg2000),
+            (b"it32", read_32t),
+            (b"t8mk", read_mk),
+        ],
+        (64, 64, 1): [(b"icp6", read_png_or_jpeg2000)],
+        (32, 32, 2): [(b"ic12", read_png_or_jpeg2000)],
+        (48, 48, 1): [(b"ih32", read_32), (b"h8mk", read_mk)],
+        (32, 32, 1): [
+            (b"icp5", read_png_or_jpeg2000),
+            (b"il32", read_32),
+            (b"l8mk", read_mk),
+        ],
+        (16, 16, 2): [(b"ic11", read_png_or_jpeg2000)],
+        (16, 16, 1): [
+            (b"icp4", read_png_or_jpeg2000),
+            (b"is32", read_32),
+            (b"s8mk", read_mk),
+        ],
+    }
+
+    def __init__(self, fobj):
+        """
+        fobj is a file-like object as an icns resource
+        """
+        # signature : (start, length)
+        self.dct = dct = {}
+        self.fobj = fobj
+        sig, filesize = nextheader(fobj)
+        if not _accept(sig):
+            msg = "not an icns file"
+            raise SyntaxError(msg)
+        i = HEADERSIZE
+        while i < filesize:
+            sig, blocksize = nextheader(fobj)
+            if blocksize <= 0:
+                msg = "invalid block header"
+                raise SyntaxError(msg)
+            i += HEADERSIZE
+            blocksize -= HEADERSIZE
+            dct[sig] = (i, blocksize)
+            fobj.seek(blocksize, io.SEEK_CUR)
+            i += blocksize
+
+    def itersizes(self):
+        sizes = []
+        for size, fmts in self.SIZES.items():
+            for fmt, reader in fmts:
+                if fmt in self.dct:
+                    sizes.append(size)
+                    break
+        return sizes
+
+    def bestsize(self):
+        sizes = self.itersizes()
+        if not sizes:
+            msg = "No 32bit icon resources found"
+            raise SyntaxError(msg)
+        return max(sizes)
+
+    def dataforsize(self, size):
+        """
+        Get an icon resource as {channel: array}.  Note that
+        the arrays are bottom-up like windows bitmaps and will likely
+        need to be flipped or transposed in some way.
+        """
+        dct = {}
+        for code, reader in self.SIZES[size]:
+            desc = self.dct.get(code)
+            if desc is not None:
+                dct.update(reader(self.fobj, desc, size))
+        return dct
+
+    def getimage(self, size=None):
+        if size is None:
+            size = self.bestsize()
+        if len(size) == 2:
+            size = (size[0], size[1], 1)
+        channels = self.dataforsize(size)
+
+        im = channels.get("RGBA", None)
+        if im:
+            return im
+
+        im = channels.get("RGB").copy()
+        try:
+            im.putalpha(channels["A"])
+        except KeyError:
+            pass
+        return im
+
+
+##
+# Image plugin for Mac OS icons.
+
+
+class IcnsImageFile(ImageFile.ImageFile):
+    """
+    PIL image support for Mac OS .icns files.
+    Chooses the best resolution, but will possibly load
+    a different size image if you mutate the size attribute
+    before calling 'load'.
+
+    The info dictionary has a key 'sizes' that is a list
+    of sizes that the icns file has.
+    """
+
+    format = "ICNS"
+    format_description = "Mac OS icns resource"
+
+    def _open(self):
+        self.icns = IcnsFile(self.fp)
+        self.mode = "RGBA"
+        self.info["sizes"] = self.icns.itersizes()
+        self.best_size = self.icns.bestsize()
+        self.size = (
+            self.best_size[0] * self.best_size[2],
+            self.best_size[1] * self.best_size[2],
+        )
+
+    @property
+    def size(self):
+        return self._size
+
+    @size.setter
+    def size(self, value):
+        info_size = value
+        if info_size not in self.info["sizes"] and len(info_size) == 2:
+            info_size = (info_size[0], info_size[1], 1)
+        if (
+            info_size not in self.info["sizes"]
+            and len(info_size) == 3
+            and info_size[2] == 1
+        ):
+            simple_sizes = [
+                (size[0] * size[2], size[1] * size[2]) for size in self.info["sizes"]
+            ]
+            if value in simple_sizes:
+                info_size = self.info["sizes"][simple_sizes.index(value)]
+        if info_size not in self.info["sizes"]:
+            msg = "This is not one of the allowed sizes of this image"
+            raise ValueError(msg)
+        self._size = value
+
+    def load(self):
+        if len(self.size) == 3:
+            self.best_size = self.size
+            self.size = (
+                self.best_size[0] * self.best_size[2],
+                self.best_size[1] * self.best_size[2],
+            )
+
+        px = Image.Image.load(self)
+        if self.im is not None and self.im.size == self.size:
+            # Already loaded
+            return px
+        self.load_prepare()
+        # This is likely NOT the best way to do it, but whatever.
+        im = self.icns.getimage(self.best_size)
+
+        # If this is a PNG or JPEG 2000, it won't be loaded yet
+        px = im.load()
+
+        self.im = im.im
+        self.mode = im.mode
+        self.size = im.size
+
+        return px
+
+
+def _save(im, fp, filename):
+    """
+    Saves the image as a series of PNG files,
+    that are then combined into a .icns file.
+    """
+    if hasattr(fp, "flush"):
+        fp.flush()
+
+    sizes = {
+        b"ic07": 128,
+        b"ic08": 256,
+        b"ic09": 512,
+        b"ic10": 1024,
+        b"ic11": 32,
+        b"ic12": 64,
+        b"ic13": 256,
+        b"ic14": 512,
+    }
+    provided_images = {im.width: im for im in im.encoderinfo.get("append_images", [])}
+    size_streams = {}
+    for size in set(sizes.values()):
+        image = (
+            provided_images[size]
+            if size in provided_images
+            else im.resize((size, size))
+        )
+
+        temp = io.BytesIO()
+        image.save(temp, "png")
+        size_streams[size] = temp.getvalue()
+
+    entries = []
+    for type, size in sizes.items():
+        stream = size_streams[size]
+        entries.append(
+            {"type": type, "size": HEADERSIZE + len(stream), "stream": stream}
+        )
+
+    # Header
+    fp.write(MAGIC)
+    file_length = HEADERSIZE  # Header
+    file_length += HEADERSIZE + 8 * len(entries)  # TOC
+    file_length += sum(entry["size"] for entry in entries)
+    fp.write(struct.pack(">i", file_length))
+
+    # TOC
+    fp.write(b"TOC ")
+    fp.write(struct.pack(">i", HEADERSIZE + len(entries) * HEADERSIZE))
+    for entry in entries:
+        fp.write(entry["type"])
+        fp.write(struct.pack(">i", entry["size"]))
+
+    # Data
+    for entry in entries:
+        fp.write(entry["type"])
+        fp.write(struct.pack(">i", entry["size"]))
+        fp.write(entry["stream"])
+
+    if hasattr(fp, "flush"):
+        fp.flush()
+
+
+def _accept(prefix):
+    return prefix[:4] == MAGIC
+
+
+Image.register_open(IcnsImageFile.format, IcnsImageFile, _accept)
+Image.register_extension(IcnsImageFile.format, ".icns")
+
+Image.register_save(IcnsImageFile.format, _save)
+Image.register_mime(IcnsImageFile.format, "image/icns")
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print("Syntax: python3 IcnsImagePlugin.py [file]")
+        sys.exit()
+
+    with open(sys.argv[1], "rb") as fp:
+        imf = IcnsImageFile(fp)
+        for size in imf.info["sizes"]:
+            imf.size = size
+            imf.save("out-%s-%s-%s.png" % size)
+        with Image.open(sys.argv[1]) as im:
+            im.save("out.png")
+        if sys.platform == "windows":
+            os.startfile("out.png")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/IcoImagePlugin.py

@@ -0,0 +1,358 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# Windows Icon support for PIL
+#
+# History:
+#       96-05-27 fl     Created
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1996.
+#
+# See the README file for information on usage and redistribution.
+#
+
+# This plugin is a refactored version of Win32IconImagePlugin by Bryan Davis
+# <casadebender@gmail.com>.
+# https://code.google.com/archive/p/casadebender/wikis/Win32IconImagePlugin.wiki
+#
+# Icon format references:
+#   * https://en.wikipedia.org/wiki/ICO_(file_format)
+#   * https://msdn.microsoft.com/en-us/library/ms997538.aspx
+
+
+import warnings
+from io import BytesIO
+from math import ceil, log
+
+from . import BmpImagePlugin, Image, ImageFile, PngImagePlugin
+from ._binary import i16le as i16
+from ._binary import i32le as i32
+from ._binary import o8
+from ._binary import o16le as o16
+from ._binary import o32le as o32
+
+#
+# --------------------------------------------------------------------
+
+_MAGIC = b"\0\0\1\0"
+
+
+def _save(im, fp, filename):
+    fp.write(_MAGIC)  # (2+2)
+    bmp = im.encoderinfo.get("bitmap_format") == "bmp"
+    sizes = im.encoderinfo.get(
+        "sizes",
+        [(16, 16), (24, 24), (32, 32), (48, 48), (64, 64), (128, 128), (256, 256)],
+    )
+    frames = []
+    provided_ims = [im] + im.encoderinfo.get("append_images", [])
+    width, height = im.size
+    for size in sorted(set(sizes)):
+        if size[0] > width or size[1] > height or size[0] > 256 or size[1] > 256:
+            continue
+
+        for provided_im in provided_ims:
+            if provided_im.size != size:
+                continue
+            frames.append(provided_im)
+            if bmp:
+                bits = BmpImagePlugin.SAVE[provided_im.mode][1]
+                bits_used = [bits]
+                for other_im in provided_ims:
+                    if other_im.size != size:
+                        continue
+                    bits = BmpImagePlugin.SAVE[other_im.mode][1]
+                    if bits not in bits_used:
+                        # Another image has been supplied for this size
+                        # with a different bit depth
+                        frames.append(other_im)
+                        bits_used.append(bits)
+            break
+        else:
+            # TODO: invent a more convenient method for proportional scalings
+            frame = provided_im.copy()
+            frame.thumbnail(size, Image.Resampling.LANCZOS, reducing_gap=None)
+            frames.append(frame)
+    fp.write(o16(len(frames)))  # idCount(2)
+    offset = fp.tell() + len(frames) * 16
+    for frame in frames:
+        width, height = frame.size
+        # 0 means 256
+        fp.write(o8(width if width < 256 else 0))  # bWidth(1)
+        fp.write(o8(height if height < 256 else 0))  # bHeight(1)
+
+        bits, colors = BmpImagePlugin.SAVE[frame.mode][1:] if bmp else (32, 0)
+        fp.write(o8(colors))  # bColorCount(1)
+        fp.write(b"\0")  # bReserved(1)
+        fp.write(b"\0\0")  # wPlanes(2)
+        fp.write(o16(bits))  # wBitCount(2)
+
+        image_io = BytesIO()
+        if bmp:
+            frame.save(image_io, "dib")
+
+            if bits != 32:
+                and_mask = Image.new("1", size)
+                ImageFile._save(
+                    and_mask, image_io, [("raw", (0, 0) + size, 0, ("1", 0, -1))]
+                )
+        else:
+            frame.save(image_io, "png")
+        image_io.seek(0)
+        image_bytes = image_io.read()
+        if bmp:
+            image_bytes = image_bytes[:8] + o32(height * 2) + image_bytes[12:]
+        bytes_len = len(image_bytes)
+        fp.write(o32(bytes_len))  # dwBytesInRes(4)
+        fp.write(o32(offset))  # dwImageOffset(4)
+        current = fp.tell()
+        fp.seek(offset)
+        fp.write(image_bytes)
+        offset = offset + bytes_len
+        fp.seek(current)
+
+
+def _accept(prefix):
+    return prefix[:4] == _MAGIC
+
+
+class IcoFile:
+    def __init__(self, buf):
+        """
+        Parse image from file-like object containing ico file data
+        """
+
+        # check magic
+        s = buf.read(6)
+        if not _accept(s):
+            msg = "not an ICO file"
+            raise SyntaxError(msg)
+
+        self.buf = buf
+        self.entry = []
+
+        # Number of items in file
+        self.nb_items = i16(s, 4)
+
+        # Get headers for each item
+        for i in range(self.nb_items):
+            s = buf.read(16)
+
+            icon_header = {
+                "width": s[0],
+                "height": s[1],
+                "nb_color": s[2],  # No. of colors in image (0 if >=8bpp)
+                "reserved": s[3],
+                "planes": i16(s, 4),
+                "bpp": i16(s, 6),
+                "size": i32(s, 8),
+                "offset": i32(s, 12),
+            }
+
+            # See Wikipedia
+            for j in ("width", "height"):
+                if not icon_header[j]:
+                    icon_header[j] = 256
+
+            # See Wikipedia notes about color depth.
+            # We need this just to differ images with equal sizes
+            icon_header["color_depth"] = (
+                icon_header["bpp"]
+                or (
+                    icon_header["nb_color"] != 0
+                    and ceil(log(icon_header["nb_color"], 2))
+                )
+                or 256
+            )
+
+            icon_header["dim"] = (icon_header["width"], icon_header["height"])
+            icon_header["square"] = icon_header["width"] * icon_header["height"]
+
+            self.entry.append(icon_header)
+
+        self.entry = sorted(self.entry, key=lambda x: x["color_depth"])
+        # ICO images are usually squares
+        # self.entry = sorted(self.entry, key=lambda x: x['width'])
+        self.entry = sorted(self.entry, key=lambda x: x["square"])
+        self.entry.reverse()
+
+    def sizes(self):
+        """
+        Get a list of all available icon sizes and color depths.
+        """
+        return {(h["width"], h["height"]) for h in self.entry}
+
+    def getentryindex(self, size, bpp=False):
+        for i, h in enumerate(self.entry):
+            if size == h["dim"] and (bpp is False or bpp == h["color_depth"]):
+                return i
+        return 0
+
+    def getimage(self, size, bpp=False):
+        """
+        Get an image from the icon
+        """
+        return self.frame(self.getentryindex(size, bpp))
+
+    def frame(self, idx):
+        """
+        Get an image from frame idx
+        """
+
+        header = self.entry[idx]
+
+        self.buf.seek(header["offset"])
+        data = self.buf.read(8)
+        self.buf.seek(header["offset"])
+
+        if data[:8] == PngImagePlugin._MAGIC:
+            # png frame
+            im = PngImagePlugin.PngImageFile(self.buf)
+            Image._decompression_bomb_check(im.size)
+        else:
+            # XOR + AND mask bmp frame
+            im = BmpImagePlugin.DibImageFile(self.buf)
+            Image._decompression_bomb_check(im.size)
+
+            # change tile dimension to only encompass XOR image
+            im._size = (im.size[0], int(im.size[1] / 2))
+            d, e, o, a = im.tile[0]
+            im.tile[0] = d, (0, 0) + im.size, o, a
+
+            # figure out where AND mask image starts
+            bpp = header["bpp"]
+            if 32 == bpp:
+                # 32-bit color depth icon image allows semitransparent areas
+                # PIL's DIB format ignores transparency bits, recover them.
+                # The DIB is packed in BGRX byte order where X is the alpha
+                # channel.
+
+                # Back up to start of bmp data
+                self.buf.seek(o)
+                # extract every 4th byte (eg. 3,7,11,15,...)
+                alpha_bytes = self.buf.read(im.size[0] * im.size[1] * 4)[3::4]
+
+                # convert to an 8bpp grayscale image
+                mask = Image.frombuffer(
+                    "L",  # 8bpp
+                    im.size,  # (w, h)
+                    alpha_bytes,  # source chars
+                    "raw",  # raw decoder
+                    ("L", 0, -1),  # 8bpp inverted, unpadded, reversed
+                )
+            else:
+                # get AND image from end of bitmap
+                w = im.size[0]
+                if (w % 32) > 0:
+                    # bitmap row data is aligned to word boundaries
+                    w += 32 - (im.size[0] % 32)
+
+                # the total mask data is
+                # padded row size * height / bits per char
+
+                total_bytes = int((w * im.size[1]) / 8)
+                and_mask_offset = header["offset"] + header["size"] - total_bytes
+
+                self.buf.seek(and_mask_offset)
+                mask_data = self.buf.read(total_bytes)
+
+                # convert raw data to image
+                mask = Image.frombuffer(
+                    "1",  # 1 bpp
+                    im.size,  # (w, h)
+                    mask_data,  # source chars
+                    "raw",  # raw decoder
+                    ("1;I", int(w / 8), -1),  # 1bpp inverted, padded, reversed
+                )
+
+                # now we have two images, im is XOR image and mask is AND image
+
+            # apply mask image as alpha channel
+            im = im.convert("RGBA")
+            im.putalpha(mask)
+
+        return im
+
+
+##
+# Image plugin for Windows Icon files.
+
+
+class IcoImageFile(ImageFile.ImageFile):
+    """
+    PIL read-only image support for Microsoft Windows .ico files.
+
+    By default the largest resolution image in the file will be loaded. This
+    can be changed by altering the 'size' attribute before calling 'load'.
+
+    The info dictionary has a key 'sizes' that is a list of the sizes available
+    in the icon file.
+
+    Handles classic, XP and Vista icon formats.
+
+    When saving, PNG compression is used. Support for this was only added in
+    Windows Vista. If you are unable to view the icon in Windows, convert the
+    image to "RGBA" mode before saving.
+
+    This plugin is a refactored version of Win32IconImagePlugin by Bryan Davis
+    <casadebender@gmail.com>.
+    https://code.google.com/archive/p/casadebender/wikis/Win32IconImagePlugin.wiki
+    """
+
+    format = "ICO"
+    format_description = "Windows Icon"
+
+    def _open(self):
+        self.ico = IcoFile(self.fp)
+        self.info["sizes"] = self.ico.sizes()
+        self.size = self.ico.entry[0]["dim"]
+        self.load()
+
+    @property
+    def size(self):
+        return self._size
+
+    @size.setter
+    def size(self, value):
+        if value not in self.info["sizes"]:
+            msg = "This is not one of the allowed sizes of this image"
+            raise ValueError(msg)
+        self._size = value
+
+    def load(self):
+        if self.im is not None and self.im.size == self.size:
+            # Already loaded
+            return Image.Image.load(self)
+        im = self.ico.getimage(self.size)
+        # if tile is PNG, it won't really be loaded yet
+        im.load()
+        self.im = im.im
+        self.pyaccess = None
+        self.mode = im.mode
+        if im.size != self.size:
+            warnings.warn("Image was not the expected size")
+
+            index = self.ico.getentryindex(self.size)
+            sizes = list(self.info["sizes"])
+            sizes[index] = im.size
+            self.info["sizes"] = set(sizes)
+
+            self.size = im.size
+
+    def load_seek(self):
+        # Flag the ImageFile.Parser so that it
+        # just does all the decode at the end.
+        pass
+
+
+#
+# --------------------------------------------------------------------
+
+
+Image.register_open(IcoImageFile.format, IcoImageFile, _accept)
+Image.register_save(IcoImageFile.format, _save)
+Image.register_extension(IcoImageFile.format, ".ico")
+
+Image.register_mime(IcoImageFile.format, "image/x-icon")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImImagePlugin.py

@@ -0,0 +1,371 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# IFUNC IM file handling for PIL
+#
+# history:
+# 1995-09-01 fl   Created.
+# 1997-01-03 fl   Save palette images
+# 1997-01-08 fl   Added sequence support
+# 1997-01-23 fl   Added P and RGB save support
+# 1997-05-31 fl   Read floating point images
+# 1997-06-22 fl   Save floating point images
+# 1997-08-27 fl   Read and save 1-bit images
+# 1998-06-25 fl   Added support for RGB+LUT images
+# 1998-07-02 fl   Added support for YCC images
+# 1998-07-15 fl   Renamed offset attribute to avoid name clash
+# 1998-12-29 fl   Added I;16 support
+# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.7)
+# 2003-09-26 fl   Added LA/PA support
+#
+# Copyright (c) 1997-2003 by Secret Labs AB.
+# Copyright (c) 1995-2001 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+import os
+import re
+
+from . import Image, ImageFile, ImagePalette
+
+# --------------------------------------------------------------------
+# Standard tags
+
+COMMENT = "Comment"
+DATE = "Date"
+EQUIPMENT = "Digitalization equipment"
+FRAMES = "File size (no of images)"
+LUT = "Lut"
+NAME = "Name"
+SCALE = "Scale (x,y)"
+SIZE = "Image size (x*y)"
+MODE = "Image type"
+
+TAGS = {
+    COMMENT: 0,
+    DATE: 0,
+    EQUIPMENT: 0,
+    FRAMES: 0,
+    LUT: 0,
+    NAME: 0,
+    SCALE: 0,
+    SIZE: 0,
+    MODE: 0,
+}
+
+OPEN = {
+    # ifunc93/p3cfunc formats
+    "0 1 image": ("1", "1"),
+    "L 1 image": ("1", "1"),
+    "Greyscale image": ("L", "L"),
+    "Grayscale image": ("L", "L"),
+    "RGB image": ("RGB", "RGB;L"),
+    "RLB image": ("RGB", "RLB"),
+    "RYB image": ("RGB", "RLB"),
+    "B1 image": ("1", "1"),
+    "B2 image": ("P", "P;2"),
+    "B4 image": ("P", "P;4"),
+    "X 24 image": ("RGB", "RGB"),
+    "L 32 S image": ("I", "I;32"),
+    "L 32 F image": ("F", "F;32"),
+    # old p3cfunc formats
+    "RGB3 image": ("RGB", "RGB;T"),
+    "RYB3 image": ("RGB", "RYB;T"),
+    # extensions
+    "LA image": ("LA", "LA;L"),
+    "PA image": ("LA", "PA;L"),
+    "RGBA image": ("RGBA", "RGBA;L"),
+    "RGBX image": ("RGBX", "RGBX;L"),
+    "CMYK image": ("CMYK", "CMYK;L"),
+    "YCC image": ("YCbCr", "YCbCr;L"),
+}
+
+# ifunc95 extensions
+for i in ["8", "8S", "16", "16S", "32", "32F"]:
+    OPEN[f"L {i} image"] = ("F", f"F;{i}")
+    OPEN[f"L*{i} image"] = ("F", f"F;{i}")
+for i in ["16", "16L", "16B"]:
+    OPEN[f"L {i} image"] = (f"I;{i}", f"I;{i}")
+    OPEN[f"L*{i} image"] = (f"I;{i}", f"I;{i}")
+for i in ["32S"]:
+    OPEN[f"L {i} image"] = ("I", f"I;{i}")
+    OPEN[f"L*{i} image"] = ("I", f"I;{i}")
+for i in range(2, 33):
+    OPEN[f"L*{i} image"] = ("F", f"F;{i}")
+
+
+# --------------------------------------------------------------------
+# Read IM directory
+
+split = re.compile(rb"^([A-Za-z][^:]*):[ \t]*(.*)[ \t]*$")
+
+
+def number(s):
+    try:
+        return int(s)
+    except ValueError:
+        return float(s)
+
+
+##
+# Image plugin for the IFUNC IM file format.
+
+
+class ImImageFile(ImageFile.ImageFile):
+    format = "IM"
+    format_description = "IFUNC Image Memory"
+    _close_exclusive_fp_after_loading = False
+
+    def _open(self):
+        # Quick rejection: if there's not an LF among the first
+        # 100 bytes, this is (probably) not a text header.
+
+        if b"\n" not in self.fp.read(100):
+            msg = "not an IM file"
+            raise SyntaxError(msg)
+        self.fp.seek(0)
+
+        n = 0
+
+        # Default values
+        self.info[MODE] = "L"
+        self.info[SIZE] = (512, 512)
+        self.info[FRAMES] = 1
+
+        self.rawmode = "L"
+
+        while True:
+            s = self.fp.read(1)
+
+            # Some versions of IFUNC uses \n\r instead of \r\n...
+            if s == b"\r":
+                continue
+
+            if not s or s == b"\0" or s == b"\x1A":
+                break
+
+            # FIXME: this may read whole file if not a text file
+            s = s + self.fp.readline()
+
+            if len(s) > 100:
+                msg = "not an IM file"
+                raise SyntaxError(msg)
+
+            if s[-2:] == b"\r\n":
+                s = s[:-2]
+            elif s[-1:] == b"\n":
+                s = s[:-1]
+
+            try:
+                m = split.match(s)
+            except re.error as e:
+                msg = "not an IM file"
+                raise SyntaxError(msg) from e
+
+            if m:
+                k, v = m.group(1, 2)
+
+                # Don't know if this is the correct encoding,
+                # but a decent guess (I guess)
+                k = k.decode("latin-1", "replace")
+                v = v.decode("latin-1", "replace")
+
+                # Convert value as appropriate
+                if k in [FRAMES, SCALE, SIZE]:
+                    v = v.replace("*", ",")
+                    v = tuple(map(number, v.split(",")))
+                    if len(v) == 1:
+                        v = v[0]
+                elif k == MODE and v in OPEN:
+                    v, self.rawmode = OPEN[v]
+
+                # Add to dictionary. Note that COMMENT tags are
+                # combined into a list of strings.
+                if k == COMMENT:
+                    if k in self.info:
+                        self.info[k].append(v)
+                    else:
+                        self.info[k] = [v]
+                else:
+                    self.info[k] = v
+
+                if k in TAGS:
+                    n += 1
+
+            else:
+                msg = "Syntax error in IM header: " + s.decode("ascii", "replace")
+                raise SyntaxError(msg)
+
+        if not n:
+            msg = "Not an IM file"
+            raise SyntaxError(msg)
+
+        # Basic attributes
+        self._size = self.info[SIZE]
+        self.mode = self.info[MODE]
+
+        # Skip forward to start of image data
+        while s and s[:1] != b"\x1A":
+            s = self.fp.read(1)
+        if not s:
+            msg = "File truncated"
+            raise SyntaxError(msg)
+
+        if LUT in self.info:
+            # convert lookup table to palette or lut attribute
+            palette = self.fp.read(768)
+            greyscale = 1  # greyscale palette
+            linear = 1  # linear greyscale palette
+            for i in range(256):
+                if palette[i] == palette[i + 256] == palette[i + 512]:
+                    if palette[i] != i:
+                        linear = 0
+                else:
+                    greyscale = 0
+            if self.mode in ["L", "LA", "P", "PA"]:
+                if greyscale:
+                    if not linear:
+                        self.lut = list(palette[:256])
+                else:
+                    if self.mode in ["L", "P"]:
+                        self.mode = self.rawmode = "P"
+                    elif self.mode in ["LA", "PA"]:
+                        self.mode = "PA"
+                        self.rawmode = "PA;L"
+                    self.palette = ImagePalette.raw("RGB;L", palette)
+            elif self.mode == "RGB":
+                if not greyscale or not linear:
+                    self.lut = list(palette)
+
+        self.frame = 0
+
+        self.__offset = offs = self.fp.tell()
+
+        self._fp = self.fp  # FIXME: hack
+
+        if self.rawmode[:2] == "F;":
+            # ifunc95 formats
+            try:
+                # use bit decoder (if necessary)
+                bits = int(self.rawmode[2:])
+                if bits not in [8, 16, 32]:
+                    self.tile = [("bit", (0, 0) + self.size, offs, (bits, 8, 3, 0, -1))]
+                    return
+            except ValueError:
+                pass
+
+        if self.rawmode in ["RGB;T", "RYB;T"]:
+            # Old LabEye/3PC files.  Would be very surprised if anyone
+            # ever stumbled upon such a file ;-)
+            size = self.size[0] * self.size[1]
+            self.tile = [
+                ("raw", (0, 0) + self.size, offs, ("G", 0, -1)),
+                ("raw", (0, 0) + self.size, offs + size, ("R", 0, -1)),
+                ("raw", (0, 0) + self.size, offs + 2 * size, ("B", 0, -1)),
+            ]
+        else:
+            # LabEye/IFUNC files
+            self.tile = [("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]
+
+    @property
+    def n_frames(self):
+        return self.info[FRAMES]
+
+    @property
+    def is_animated(self):
+        return self.info[FRAMES] > 1
+
+    def seek(self, frame):
+        if not self._seek_check(frame):
+            return
+
+        self.frame = frame
+
+        if self.mode == "1":
+            bits = 1
+        else:
+            bits = 8 * len(self.mode)
+
+        size = ((self.size[0] * bits + 7) // 8) * self.size[1]
+        offs = self.__offset + frame * size
+
+        self.fp = self._fp
+
+        self.tile = [("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]
+
+    def tell(self):
+        return self.frame
+
+
+#
+# --------------------------------------------------------------------
+# Save IM files
+
+
+SAVE = {
+    # mode: (im type, raw mode)
+    "1": ("0 1", "1"),
+    "L": ("Greyscale", "L"),
+    "LA": ("LA", "LA;L"),
+    "P": ("Greyscale", "P"),
+    "PA": ("LA", "PA;L"),
+    "I": ("L 32S", "I;32S"),
+    "I;16": ("L 16", "I;16"),
+    "I;16L": ("L 16L", "I;16L"),
+    "I;16B": ("L 16B", "I;16B"),
+    "F": ("L 32F", "F;32F"),
+    "RGB": ("RGB", "RGB;L"),
+    "RGBA": ("RGBA", "RGBA;L"),
+    "RGBX": ("RGBX", "RGBX;L"),
+    "CMYK": ("CMYK", "CMYK;L"),
+    "YCbCr": ("YCC", "YCbCr;L"),
+}
+
+
+def _save(im, fp, filename):
+    try:
+        image_type, rawmode = SAVE[im.mode]
+    except KeyError as e:
+        msg = f"Cannot save {im.mode} images as IM"
+        raise ValueError(msg) from e
+
+    frames = im.encoderinfo.get("frames", 1)
+
+    fp.write(f"Image type: {image_type} image\r\n".encode("ascii"))
+    if filename:
+        # Each line must be 100 characters or less,
+        # or: SyntaxError("not an IM file")
+        # 8 characters are used for "Name: " and "\r\n"
+        # Keep just the filename, ditch the potentially overlong path
+        name, ext = os.path.splitext(os.path.basename(filename))
+        name = "".join([name[: 92 - len(ext)], ext])
+
+        fp.write(f"Name: {name}\r\n".encode("ascii"))
+    fp.write(("Image size (x*y): %d*%d\r\n" % im.size).encode("ascii"))
+    fp.write(f"File size (no of images): {frames}\r\n".encode("ascii"))
+    if im.mode in ["P", "PA"]:
+        fp.write(b"Lut: 1\r\n")
+    fp.write(b"\000" * (511 - fp.tell()) + b"\032")
+    if im.mode in ["P", "PA"]:
+        im_palette = im.im.getpalette("RGB", "RGB;L")
+        colors = len(im_palette) // 3
+        palette = b""
+        for i in range(3):
+            palette += im_palette[colors * i : colors * (i + 1)]
+            palette += b"\x00" * (256 - colors)
+        fp.write(palette)  # 768 bytes
+    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, -1))])
+
+
+#
+# --------------------------------------------------------------------
+# Registry
+
+
+Image.register_open(ImImageFile.format, ImImageFile)
+Image.register_save(ImImageFile.format, _save)
+
+Image.register_extension(ImImageFile.format, ".im")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageChops.py

@@ -0,0 +1,303 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# standard channel operations
+#
+# History:
+# 1996-03-24 fl   Created
+# 1996-08-13 fl   Added logical operations (for "1" images)
+# 2000-10-12 fl   Added offset method (from Image.py)
+#
+# Copyright (c) 1997-2000 by Secret Labs AB
+# Copyright (c) 1996-2000 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+from . import Image
+
+
+def constant(image, value):
+    """Fill a channel with a given grey level.
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    return Image.new("L", image.size, value)
+
+
+def duplicate(image):
+    """Copy a channel. Alias for :py:meth:`PIL.Image.Image.copy`.
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    return image.copy()
+
+
+def invert(image):
+    """
+    Invert an image (channel). ::
+
+        out = MAX - image
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image.load()
+    return image._new(image.im.chop_invert())
+
+
+def lighter(image1, image2):
+    """
+    Compares the two images, pixel by pixel, and returns a new image containing
+    the lighter values. ::
+
+        out = max(image1, image2)
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_lighter(image2.im))
+
+
+def darker(image1, image2):
+    """
+    Compares the two images, pixel by pixel, and returns a new image containing
+    the darker values. ::
+
+        out = min(image1, image2)
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_darker(image2.im))
+
+
+def difference(image1, image2):
+    """
+    Returns the absolute value of the pixel-by-pixel difference between the two
+    images. ::
+
+        out = abs(image1 - image2)
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_difference(image2.im))
+
+
+def multiply(image1, image2):
+    """
+    Superimposes two images on top of each other.
+
+    If you multiply an image with a solid black image, the result is black. If
+    you multiply with a solid white image, the image is unaffected. ::
+
+        out = image1 * image2 / MAX
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_multiply(image2.im))
+
+
+def screen(image1, image2):
+    """
+    Superimposes two inverted images on top of each other. ::
+
+        out = MAX - ((MAX - image1) * (MAX - image2) / MAX)
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_screen(image2.im))
+
+
+def soft_light(image1, image2):
+    """
+    Superimposes two images on top of each other using the Soft Light algorithm
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_soft_light(image2.im))
+
+
+def hard_light(image1, image2):
+    """
+    Superimposes two images on top of each other using the Hard Light algorithm
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_hard_light(image2.im))
+
+
+def overlay(image1, image2):
+    """
+    Superimposes two images on top of each other using the Overlay algorithm
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_overlay(image2.im))
+
+
+def add(image1, image2, scale=1.0, offset=0):
+    """
+    Adds two images, dividing the result by scale and adding the
+    offset. If omitted, scale defaults to 1.0, and offset to 0.0. ::
+
+        out = ((image1 + image2) / scale + offset)
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_add(image2.im, scale, offset))
+
+
+def subtract(image1, image2, scale=1.0, offset=0):
+    """
+    Subtracts two images, dividing the result by scale and adding the offset.
+    If omitted, scale defaults to 1.0, and offset to 0.0. ::
+
+        out = ((image1 - image2) / scale + offset)
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_subtract(image2.im, scale, offset))
+
+
+def add_modulo(image1, image2):
+    """Add two images, without clipping the result. ::
+
+        out = ((image1 + image2) % MAX)
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_add_modulo(image2.im))
+
+
+def subtract_modulo(image1, image2):
+    """Subtract two images, without clipping the result. ::
+
+        out = ((image1 - image2) % MAX)
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_subtract_modulo(image2.im))
+
+
+def logical_and(image1, image2):
+    """Logical AND between two images.
+
+    Both of the images must have mode "1". If you would like to perform a
+    logical AND on an image with a mode other than "1", try
+    :py:meth:`~PIL.ImageChops.multiply` instead, using a black-and-white mask
+    as the second image. ::
+
+        out = ((image1 and image2) % MAX)
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_and(image2.im))
+
+
+def logical_or(image1, image2):
+    """Logical OR between two images.
+
+    Both of the images must have mode "1". ::
+
+        out = ((image1 or image2) % MAX)
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_or(image2.im))
+
+
+def logical_xor(image1, image2):
+    """Logical XOR between two images.
+
+    Both of the images must have mode "1". ::
+
+        out = ((bool(image1) != bool(image2)) % MAX)
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    image1.load()
+    image2.load()
+    return image1._new(image1.im.chop_xor(image2.im))
+
+
+def blend(image1, image2, alpha):
+    """Blend images using constant transparency weight. Alias for
+    :py:func:`PIL.Image.blend`.
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    return Image.blend(image1, image2, alpha)
+
+
+def composite(image1, image2, mask):
+    """Create composite using transparency mask. Alias for
+    :py:func:`PIL.Image.composite`.
+
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    return Image.composite(image1, image2, mask)
+
+
+def offset(image, xoffset, yoffset=None):
+    """Returns a copy of the image where data has been offset by the given
+    distances. Data wraps around the edges. If ``yoffset`` is omitted, it
+    is assumed to be equal to ``xoffset``.
+
+    :param image: Input image.
+    :param xoffset: The horizontal distance.
+    :param yoffset: The vertical distance.  If omitted, both
+        distances are set to the same value.
+    :rtype: :py:class:`~PIL.Image.Image`
+    """
+
+    if yoffset is None:
+        yoffset = xoffset
+    image.load()
+    return image._new(image.im.offset(xoffset, yoffset))

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageColor.py

@@ -0,0 +1,313 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# map CSS3-style colour description strings to RGB
+#
+# History:
+# 2002-10-24 fl   Added support for CSS-style color strings
+# 2002-12-15 fl   Added RGBA support
+# 2004-03-27 fl   Fixed remaining int() problems for Python 1.5.2
+# 2004-07-19 fl   Fixed gray/grey spelling issues
+# 2009-03-05 fl   Fixed rounding error in grayscale calculation
+#
+# Copyright (c) 2002-2004 by Secret Labs AB
+# Copyright (c) 2002-2004 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import re
+
+from . import Image
+
+
+def getrgb(color):
+    """
+     Convert a color string to an RGB or RGBA tuple. If the string cannot be
+     parsed, this function raises a :py:exc:`ValueError` exception.
+
+    .. versionadded:: 1.1.4
+
+    :param color: A color string
+    :return: ``(red, green, blue[, alpha])``
+    """
+    if len(color) > 100:
+        msg = "color specifier is too long"
+        raise ValueError(msg)
+    color = color.lower()
+
+    rgb = colormap.get(color, None)
+    if rgb:
+        if isinstance(rgb, tuple):
+            return rgb
+        colormap[color] = rgb = getrgb(rgb)
+        return rgb
+
+    # check for known string formats
+    if re.match("#[a-f0-9]{3}$", color):
+        return int(color[1] * 2, 16), int(color[2] * 2, 16), int(color[3] * 2, 16)
+
+    if re.match("#[a-f0-9]{4}$", color):
+        return (
+            int(color[1] * 2, 16),
+            int(color[2] * 2, 16),
+            int(color[3] * 2, 16),
+            int(color[4] * 2, 16),
+        )
+
+    if re.match("#[a-f0-9]{6}$", color):
+        return int(color[1:3], 16), int(color[3:5], 16), int(color[5:7], 16)
+
+    if re.match("#[a-f0-9]{8}$", color):
+        return (
+            int(color[1:3], 16),
+            int(color[3:5], 16),
+            int(color[5:7], 16),
+            int(color[7:9], 16),
+        )
+
+    m = re.match(r"rgb\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$", color)
+    if m:
+        return int(m.group(1)), int(m.group(2)), int(m.group(3))
+
+    m = re.match(r"rgb\(\s*(\d+)%\s*,\s*(\d+)%\s*,\s*(\d+)%\s*\)$", color)
+    if m:
+        return (
+            int((int(m.group(1)) * 255) / 100.0 + 0.5),
+            int((int(m.group(2)) * 255) / 100.0 + 0.5),
+            int((int(m.group(3)) * 255) / 100.0 + 0.5),
+        )
+
+    m = re.match(
+        r"hsl\(\s*(\d+\.?\d*)\s*,\s*(\d+\.?\d*)%\s*,\s*(\d+\.?\d*)%\s*\)$", color
+    )
+    if m:
+        from colorsys import hls_to_rgb
+
+        rgb = hls_to_rgb(
+            float(m.group(1)) / 360.0,
+            float(m.group(3)) / 100.0,
+            float(m.group(2)) / 100.0,
+        )
+        return (
+            int(rgb[0] * 255 + 0.5),
+            int(rgb[1] * 255 + 0.5),
+            int(rgb[2] * 255 + 0.5),
+        )
+
+    m = re.match(
+        r"hs[bv]\(\s*(\d+\.?\d*)\s*,\s*(\d+\.?\d*)%\s*,\s*(\d+\.?\d*)%\s*\)$", color
+    )
+    if m:
+        from colorsys import hsv_to_rgb
+
+        rgb = hsv_to_rgb(
+            float(m.group(1)) / 360.0,
+            float(m.group(2)) / 100.0,
+            float(m.group(3)) / 100.0,
+        )
+        return (
+            int(rgb[0] * 255 + 0.5),
+            int(rgb[1] * 255 + 0.5),
+            int(rgb[2] * 255 + 0.5),
+        )
+
+    m = re.match(r"rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$", color)
+    if m:
+        return int(m.group(1)), int(m.group(2)), int(m.group(3)), int(m.group(4))
+    msg = f"unknown color specifier: {repr(color)}"
+    raise ValueError(msg)
+
+
+def getcolor(color, mode):
+    """
+    Same as :py:func:`~PIL.ImageColor.getrgb` for most modes. However, if
+    ``mode`` is HSV, converts the RGB value to a HSV value, or if ``mode`` is
+    not color or a palette image, converts the RGB value to a greyscale value.
+    If the string cannot be parsed, this function raises a :py:exc:`ValueError`
+    exception.
+
+    .. versionadded:: 1.1.4
+
+    :param color: A color string
+    :param mode: Convert result to this mode
+    :return: ``(graylevel[, alpha]) or (red, green, blue[, alpha])``
+    """
+    # same as getrgb, but converts the result to the given mode
+    color, alpha = getrgb(color), 255
+    if len(color) == 4:
+        color, alpha = color[:3], color[3]
+
+    if mode == "HSV":
+        from colorsys import rgb_to_hsv
+
+        r, g, b = color
+        h, s, v = rgb_to_hsv(r / 255, g / 255, b / 255)
+        return int(h * 255), int(s * 255), int(v * 255)
+    elif Image.getmodebase(mode) == "L":
+        r, g, b = color
+        # ITU-R Recommendation 601-2 for nonlinear RGB
+        # scaled to 24 bits to match the convert's implementation.
+        color = (r * 19595 + g * 38470 + b * 7471 + 0x8000) >> 16
+        if mode[-1] == "A":
+            return color, alpha
+    else:
+        if mode[-1] == "A":
+            return color + (alpha,)
+    return color
+
+
+colormap = {
+    # X11 colour table from https://drafts.csswg.org/css-color-4/, with
+    # gray/grey spelling issues fixed.  This is a superset of HTML 4.0
+    # colour names used in CSS 1.
+    "aliceblue": "#f0f8ff",
+    "antiquewhite": "#faebd7",
+    "aqua": "#00ffff",
+    "aquamarine": "#7fffd4",
+    "azure": "#f0ffff",
+    "beige": "#f5f5dc",
+    "bisque": "#ffe4c4",
+    "black": "#000000",
+    "blanchedalmond": "#ffebcd",
+    "blue": "#0000ff",
+    "blueviolet": "#8a2be2",
+    "brown": "#a52a2a",
+    "burlywood": "#deb887",
+    "cadetblue": "#5f9ea0",
+    "chartreuse": "#7fff00",
+    "chocolate": "#d2691e",
+    "coral": "#ff7f50",
+    "cornflowerblue": "#6495ed",
+    "cornsilk": "#fff8dc",
+    "crimson": "#dc143c",
+    "cyan": "#00ffff",
+    "darkblue": "#00008b",
+    "darkcyan": "#008b8b",
+    "darkgoldenrod": "#b8860b",
+    "darkgray": "#a9a9a9",
+    "darkgrey": "#a9a9a9",
+    "darkgreen": "#006400",
+    "darkkhaki": "#bdb76b",
+    "darkmagenta": "#8b008b",
+    "darkolivegreen": "#556b2f",
+    "darkorange": "#ff8c00",
+    "darkorchid": "#9932cc",
+    "darkred": "#8b0000",
+    "darksalmon": "#e9967a",
+    "darkseagreen": "#8fbc8f",
+    "darkslateblue": "#483d8b",
+    "darkslategray": "#2f4f4f",
+    "darkslategrey": "#2f4f4f",
+    "darkturquoise": "#00ced1",
+    "darkviolet": "#9400d3",
+    "deeppink": "#ff1493",
+    "deepskyblue": "#00bfff",
+    "dimgray": "#696969",
+    "dimgrey": "#696969",
+    "dodgerblue": "#1e90ff",
+    "firebrick": "#b22222",
+    "floralwhite": "#fffaf0",
+    "forestgreen": "#228b22",
+    "fuchsia": "#ff00ff",
+    "gainsboro": "#dcdcdc",
+    "ghostwhite": "#f8f8ff",
+    "gold": "#ffd700",
+    "goldenrod": "#daa520",
+    "gray": "#808080",
+    "grey": "#808080",
+    "green": "#008000",
+    "greenyellow": "#adff2f",
+    "honeydew": "#f0fff0",
+    "hotpink": "#ff69b4",
+    "indianred": "#cd5c5c",
+    "indigo": "#4b0082",
+    "ivory": "#fffff0",
+    "khaki": "#f0e68c",
+    "lavender": "#e6e6fa",
+    "lavenderblush": "#fff0f5",
+    "lawngreen": "#7cfc00",
+    "lemonchiffon": "#fffacd",
+    "lightblue": "#add8e6",
+    "lightcoral": "#f08080",
+    "lightcyan": "#e0ffff",
+    "lightgoldenrodyellow": "#fafad2",
+    "lightgreen": "#90ee90",
+    "lightgray": "#d3d3d3",
+    "lightgrey": "#d3d3d3",
+    "lightpink": "#ffb6c1",
+    "lightsalmon": "#ffa07a",
+    "lightseagreen": "#20b2aa",
+    "lightskyblue": "#87cefa",
+    "lightslategray": "#778899",
+    "lightslategrey": "#778899",
+    "lightsteelblue": "#b0c4de",
+    "lightyellow": "#ffffe0",
+    "lime": "#00ff00",
+    "limegreen": "#32cd32",
+    "linen": "#faf0e6",
+    "magenta": "#ff00ff",
+    "maroon": "#800000",
+    "mediumaquamarine": "#66cdaa",
+    "mediumblue": "#0000cd",
+    "mediumorchid": "#ba55d3",
+    "mediumpurple": "#9370db",
+    "mediumseagreen": "#3cb371",
+    "mediumslateblue": "#7b68ee",
+    "mediumspringgreen": "#00fa9a",
+    "mediumturquoise": "#48d1cc",
+    "mediumvioletred": "#c71585",
+    "midnightblue": "#191970",
+    "mintcream": "#f5fffa",
+    "mistyrose": "#ffe4e1",
+    "moccasin": "#ffe4b5",
+    "navajowhite": "#ffdead",
+    "navy": "#000080",
+    "oldlace": "#fdf5e6",
+    "olive": "#808000",
+    "olivedrab": "#6b8e23",
+    "orange": "#ffa500",
+    "orangered": "#ff4500",
+    "orchid": "#da70d6",
+    "palegoldenrod": "#eee8aa",
+    "palegreen": "#98fb98",
+    "paleturquoise": "#afeeee",
+    "palevioletred": "#db7093",
+    "papayawhip": "#ffefd5",
+    "peachpuff": "#ffdab9",
+    "peru": "#cd853f",
+    "pink": "#ffc0cb",
+    "plum": "#dda0dd",
+    "powderblue": "#b0e0e6",
+    "purple": "#800080",
+    "rebeccapurple": "#663399",
+    "red": "#ff0000",
+    "rosybrown": "#bc8f8f",
+    "royalblue": "#4169e1",
+    "saddlebrown": "#8b4513",
+    "salmon": "#fa8072",
+    "sandybrown": "#f4a460",
+    "seagreen": "#2e8b57",
+    "seashell": "#fff5ee",
+    "sienna": "#a0522d",
+    "silver": "#c0c0c0",
+    "skyblue": "#87ceeb",
+    "slateblue": "#6a5acd",
+    "slategray": "#708090",
+    "slategrey": "#708090",
+    "snow": "#fffafa",
+    "springgreen": "#00ff7f",
+    "steelblue": "#4682b4",
+    "tan": "#d2b48c",
+    "teal": "#008080",
+    "thistle": "#d8bfd8",
+    "tomato": "#ff6347",
+    "turquoise": "#40e0d0",
+    "violet": "#ee82ee",
+    "wheat": "#f5deb3",
+    "white": "#ffffff",
+    "whitesmoke": "#f5f5f5",
+    "yellow": "#ffff00",
+    "yellowgreen": "#9acd32",
+}

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageDraw2.py

@@ -0,0 +1,193 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# WCK-style drawing interface operations
+#
+# History:
+# 2003-12-07 fl   created
+# 2005-05-15 fl   updated; added to PIL as ImageDraw2
+# 2005-05-15 fl   added text support
+# 2005-05-20 fl   added arc/chord/pieslice support
+#
+# Copyright (c) 2003-2005 by Secret Labs AB
+# Copyright (c) 2003-2005 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+"""
+(Experimental) WCK-style drawing interface operations
+
+.. seealso:: :py:mod:`PIL.ImageDraw`
+"""
+
+
+from . import Image, ImageColor, ImageDraw, ImageFont, ImagePath
+
+
+class Pen:
+    """Stores an outline color and width."""
+
+    def __init__(self, color, width=1, opacity=255):
+        self.color = ImageColor.getrgb(color)
+        self.width = width
+
+
+class Brush:
+    """Stores a fill color"""
+
+    def __init__(self, color, opacity=255):
+        self.color = ImageColor.getrgb(color)
+
+
+class Font:
+    """Stores a TrueType font and color"""
+
+    def __init__(self, color, file, size=12):
+        # FIXME: add support for bitmap fonts
+        self.color = ImageColor.getrgb(color)
+        self.font = ImageFont.truetype(file, size)
+
+
+class Draw:
+    """
+    (Experimental) WCK-style drawing interface
+    """
+
+    def __init__(self, image, size=None, color=None):
+        if not hasattr(image, "im"):
+            image = Image.new(image, size, color)
+        self.draw = ImageDraw.Draw(image)
+        self.image = image
+        self.transform = None
+
+    def flush(self):
+        return self.image
+
+    def render(self, op, xy, pen, brush=None):
+        # handle color arguments
+        outline = fill = None
+        width = 1
+        if isinstance(pen, Pen):
+            outline = pen.color
+            width = pen.width
+        elif isinstance(brush, Pen):
+            outline = brush.color
+            width = brush.width
+        if isinstance(brush, Brush):
+            fill = brush.color
+        elif isinstance(pen, Brush):
+            fill = pen.color
+        # handle transformation
+        if self.transform:
+            xy = ImagePath.Path(xy)
+            xy.transform(self.transform)
+        # render the item
+        if op == "line":
+            self.draw.line(xy, fill=outline, width=width)
+        else:
+            getattr(self.draw, op)(xy, fill=fill, outline=outline)
+
+    def settransform(self, offset):
+        """Sets a transformation offset."""
+        (xoffset, yoffset) = offset
+        self.transform = (1, 0, xoffset, 0, 1, yoffset)
+
+    def arc(self, xy, start, end, *options):
+        """
+        Draws an arc (a portion of a circle outline) between the start and end
+        angles, inside the given bounding box.
+
+        .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.arc`
+        """
+        self.render("arc", xy, start, end, *options)
+
+    def chord(self, xy, start, end, *options):
+        """
+        Same as :py:meth:`~PIL.ImageDraw2.Draw.arc`, but connects the end points
+        with a straight line.
+
+        .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.chord`
+        """
+        self.render("chord", xy, start, end, *options)
+
+    def ellipse(self, xy, *options):
+        """
+        Draws an ellipse inside the given bounding box.
+
+        .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.ellipse`
+        """
+        self.render("ellipse", xy, *options)
+
+    def line(self, xy, *options):
+        """
+        Draws a line between the coordinates in the ``xy`` list.
+
+        .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.line`
+        """
+        self.render("line", xy, *options)
+
+    def pieslice(self, xy, start, end, *options):
+        """
+        Same as arc, but also draws straight lines between the end points and the
+        center of the bounding box.
+
+        .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.pieslice`
+        """
+        self.render("pieslice", xy, start, end, *options)
+
+    def polygon(self, xy, *options):
+        """
+        Draws a polygon.
+
+        The polygon outline consists of straight lines between the given
+        coordinates, plus a straight line between the last and the first
+        coordinate.
+
+
+        .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.polygon`
+        """
+        self.render("polygon", xy, *options)
+
+    def rectangle(self, xy, *options):
+        """
+        Draws a rectangle.
+
+        .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.rectangle`
+        """
+        self.render("rectangle", xy, *options)
+
+    def text(self, xy, text, font):
+        """
+        Draws the string at the given position.
+
+        .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.text`
+        """
+        if self.transform:
+            xy = ImagePath.Path(xy)
+            xy.transform(self.transform)
+        self.draw.text(xy, text, font=font.font, fill=font.color)
+
+    def textbbox(self, xy, text, font):
+        """
+        Returns bounding box (in pixels) of given text.
+
+        :return: ``(left, top, right, bottom)`` bounding box
+
+        .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.textbbox`
+        """
+        if self.transform:
+            xy = ImagePath.Path(xy)
+            xy.transform(self.transform)
+        return self.draw.textbbox(xy, text, font=font.font)
+
+    def textlength(self, text, font):
+        """
+        Returns length (in pixels) of given text.
+        This is the amount by which following text should be offset.
+
+        .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.textlength`
+        """
+        return self.draw.textlength(text, font=font.font)

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageEnhance.py

@@ -0,0 +1,103 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# image enhancement classes
+#
+# For a background, see "Image Processing By Interpolation and
+# Extrapolation", Paul Haeberli and Douglas Voorhies.  Available
+# at http://www.graficaobscura.com/interp/index.html
+#
+# History:
+# 1996-03-23 fl  Created
+# 2009-06-16 fl  Fixed mean calculation
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1996.
+#
+# See the README file for information on usage and redistribution.
+#
+
+from . import Image, ImageFilter, ImageStat
+
+
+class _Enhance:
+    def enhance(self, factor):
+        """
+        Returns an enhanced image.
+
+        :param factor: A floating point value controlling the enhancement.
+                       Factor 1.0 always returns a copy of the original image,
+                       lower factors mean less color (brightness, contrast,
+                       etc), and higher values more. There are no restrictions
+                       on this value.
+        :rtype: :py:class:`~PIL.Image.Image`
+        """
+        return Image.blend(self.degenerate, self.image, factor)
+
+
+class Color(_Enhance):
+    """Adjust image color balance.
+
+    This class can be used to adjust the colour balance of an image, in
+    a manner similar to the controls on a colour TV set. An enhancement
+    factor of 0.0 gives a black and white image. A factor of 1.0 gives
+    the original image.
+    """
+
+    def __init__(self, image):
+        self.image = image
+        self.intermediate_mode = "L"
+        if "A" in image.getbands():
+            self.intermediate_mode = "LA"
+
+        self.degenerate = image.convert(self.intermediate_mode).convert(image.mode)
+
+
+class Contrast(_Enhance):
+    """Adjust image contrast.
+
+    This class can be used to control the contrast of an image, similar
+    to the contrast control on a TV set. An enhancement factor of 0.0
+    gives a solid grey image. A factor of 1.0 gives the original image.
+    """
+
+    def __init__(self, image):
+        self.image = image
+        mean = int(ImageStat.Stat(image.convert("L")).mean[0] + 0.5)
+        self.degenerate = Image.new("L", image.size, mean).convert(image.mode)
+
+        if "A" in image.getbands():
+            self.degenerate.putalpha(image.getchannel("A"))
+
+
+class Brightness(_Enhance):
+    """Adjust image brightness.
+
+    This class can be used to control the brightness of an image.  An
+    enhancement factor of 0.0 gives a black image. A factor of 1.0 gives the
+    original image.
+    """
+
+    def __init__(self, image):
+        self.image = image
+        self.degenerate = Image.new(image.mode, image.size, 0)
+
+        if "A" in image.getbands():
+            self.degenerate.putalpha(image.getchannel("A"))
+
+
+class Sharpness(_Enhance):
+    """Adjust image sharpness.
+
+    This class can be used to adjust the sharpness of an image. An
+    enhancement factor of 0.0 gives a blurred image, a factor of 1.0 gives the
+    original image, and a factor of 2.0 gives a sharpened image.
+    """
+
+    def __init__(self, image):
+        self.image = image
+        self.degenerate = image.filter(ImageFilter.SMOOTH)
+
+        if "A" in image.getbands():
+            self.degenerate.putalpha(image.getchannel("A"))

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageFile.py

@@ -0,0 +1,773 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# base class for image file handlers
+#
+# history:
+# 1995-09-09 fl   Created
+# 1996-03-11 fl   Fixed load mechanism.
+# 1996-04-15 fl   Added pcx/xbm decoders.
+# 1996-04-30 fl   Added encoders.
+# 1996-12-14 fl   Added load helpers
+# 1997-01-11 fl   Use encode_to_file where possible
+# 1997-08-27 fl   Flush output in _save
+# 1998-03-05 fl   Use memory mapping for some modes
+# 1999-02-04 fl   Use memory mapping also for "I;16" and "I;16B"
+# 1999-05-31 fl   Added image parser
+# 2000-10-12 fl   Set readonly flag on memory-mapped images
+# 2002-03-20 fl   Use better messages for common decoder errors
+# 2003-04-21 fl   Fall back on mmap/map_buffer if map is not available
+# 2003-10-30 fl   Added StubImageFile class
+# 2004-02-25 fl   Made incremental parser more robust
+#
+# Copyright (c) 1997-2004 by Secret Labs AB
+# Copyright (c) 1995-2004 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import io
+import itertools
+import struct
+import sys
+
+from . import Image
+from ._util import is_path
+
+MAXBLOCK = 65536
+
+SAFEBLOCK = 1024 * 1024
+
+LOAD_TRUNCATED_IMAGES = False
+"""Whether or not to load truncated image files. User code may change this."""
+
+ERRORS = {
+    -1: "image buffer overrun error",
+    -2: "decoding error",
+    -3: "unknown error",
+    -8: "bad configuration",
+    -9: "out of memory error",
+}
+"""
+Dict of known error codes returned from :meth:`.PyDecoder.decode`,
+:meth:`.PyEncoder.encode` :meth:`.PyEncoder.encode_to_pyfd` and
+:meth:`.PyEncoder.encode_to_file`.
+"""
+
+
+#
+# --------------------------------------------------------------------
+# Helpers
+
+
+def raise_oserror(error):
+    try:
+        msg = Image.core.getcodecstatus(error)
+    except AttributeError:
+        msg = ERRORS.get(error)
+    if not msg:
+        msg = f"decoder error {error}"
+    msg += " when reading image file"
+    raise OSError(msg)
+
+
+def _tilesort(t):
+    # sort on offset
+    return t[2]
+
+
+#
+# --------------------------------------------------------------------
+# ImageFile base class
+
+
+class ImageFile(Image.Image):
+    """Base class for image file format handlers."""
+
+    def __init__(self, fp=None, filename=None):
+        super().__init__()
+
+        self._min_frame = 0
+
+        self.custom_mimetype = None
+
+        self.tile = None
+        """ A list of tile descriptors, or ``None`` """
+
+        self.readonly = 1  # until we know better
+
+        self.decoderconfig = ()
+        self.decodermaxblock = MAXBLOCK
+
+        if is_path(fp):
+            # filename
+            self.fp = open(fp, "rb")
+            self.filename = fp
+            self._exclusive_fp = True
+        else:
+            # stream
+            self.fp = fp
+            self.filename = filename
+            # can be overridden
+            self._exclusive_fp = None
+
+        try:
+            try:
+                self._open()
+            except (
+                IndexError,  # end of data
+                TypeError,  # end of data (ord)
+                KeyError,  # unsupported mode
+                EOFError,  # got header but not the first frame
+                struct.error,
+            ) as v:
+                raise SyntaxError(v) from v
+
+            if not self.mode or self.size[0] <= 0 or self.size[1] <= 0:
+                msg = "not identified by this driver"
+                raise SyntaxError(msg)
+        except BaseException:
+            # close the file only if we have opened it this constructor
+            if self._exclusive_fp:
+                self.fp.close()
+            raise
+
+    def get_format_mimetype(self):
+        if self.custom_mimetype:
+            return self.custom_mimetype
+        if self.format is not None:
+            return Image.MIME.get(self.format.upper())
+
+    def __setstate__(self, state):
+        self.tile = []
+        super().__setstate__(state)
+
+    def verify(self):
+        """Check file integrity"""
+
+        # raise exception if something's wrong.  must be called
+        # directly after open, and closes file when finished.
+        if self._exclusive_fp:
+            self.fp.close()
+        self.fp = None
+
+    def load(self):
+        """Load image data based on tile list"""
+
+        if self.tile is None:
+            msg = "cannot load this image"
+            raise OSError(msg)
+
+        pixel = Image.Image.load(self)
+        if not self.tile:
+            return pixel
+
+        self.map = None
+        use_mmap = self.filename and len(self.tile) == 1
+        # As of pypy 2.1.0, memory mapping was failing here.
+        use_mmap = use_mmap and not hasattr(sys, "pypy_version_info")
+
+        readonly = 0
+
+        # look for read/seek overrides
+        try:
+            read = self.load_read
+            # don't use mmap if there are custom read/seek functions
+            use_mmap = False
+        except AttributeError:
+            read = self.fp.read
+
+        try:
+            seek = self.load_seek
+            use_mmap = False
+        except AttributeError:
+            seek = self.fp.seek
+
+        if use_mmap:
+            # try memory mapping
+            decoder_name, extents, offset, args = self.tile[0]
+            if (
+                decoder_name == "raw"
+                and len(args) >= 3
+                and args[0] == self.mode
+                and args[0] in Image._MAPMODES
+            ):
+                try:
+                    # use mmap, if possible
+                    import mmap
+
+                    with open(self.filename) as fp:
+                        self.map = mmap.mmap(fp.fileno(), 0, access=mmap.ACCESS_READ)
+                    if offset + self.size[1] * args[1] > self.map.size():
+                        # buffer is not large enough
+                        raise OSError
+                    self.im = Image.core.map_buffer(
+                        self.map, self.size, decoder_name, offset, args
+                    )
+                    readonly = 1
+                    # After trashing self.im,
+                    # we might need to reload the palette data.
+                    if self.palette:
+                        self.palette.dirty = 1
+                except (AttributeError, OSError, ImportError):
+                    self.map = None
+
+        self.load_prepare()
+        err_code = -3  # initialize to unknown error
+        if not self.map:
+            # sort tiles in file order
+            self.tile.sort(key=_tilesort)
+
+            try:
+                # FIXME: This is a hack to handle TIFF's JpegTables tag.
+                prefix = self.tile_prefix
+            except AttributeError:
+                prefix = b""
+
+            # Remove consecutive duplicates that only differ by their offset
+            self.tile = [
+                list(tiles)[-1]
+                for _, tiles in itertools.groupby(
+                    self.tile, lambda tile: (tile[0], tile[1], tile[3])
+                )
+            ]
+            for decoder_name, extents, offset, args in self.tile:
+                seek(offset)
+                decoder = Image._getdecoder(
+                    self.mode, decoder_name, args, self.decoderconfig
+                )
+                try:
+                    decoder.setimage(self.im, extents)
+                    if decoder.pulls_fd:
+                        decoder.setfd(self.fp)
+                        err_code = decoder.decode(b"")[1]
+                    else:
+                        b = prefix
+                        while True:
+                            try:
+                                s = read(self.decodermaxblock)
+                            except (IndexError, struct.error) as e:
+                                # truncated png/gif
+                                if LOAD_TRUNCATED_IMAGES:
+                                    break
+                                else:
+                                    msg = "image file is truncated"
+                                    raise OSError(msg) from e
+
+                            if not s:  # truncated jpeg
+                                if LOAD_TRUNCATED_IMAGES:
+                                    break
+                                else:
+                                    msg = (
+                                        "image file is truncated "
+                                        f"({len(b)} bytes not processed)"
+                                    )
+                                    raise OSError(msg)
+
+                            b = b + s
+                            n, err_code = decoder.decode(b)
+                            if n < 0:
+                                break
+                            b = b[n:]
+                finally:
+                    # Need to cleanup here to prevent leaks
+                    decoder.cleanup()
+
+        self.tile = []
+        self.readonly = readonly
+
+        self.load_end()
+
+        if self._exclusive_fp and self._close_exclusive_fp_after_loading:
+            self.fp.close()
+        self.fp = None
+
+        if not self.map and not LOAD_TRUNCATED_IMAGES and err_code < 0:
+            # still raised if decoder fails to return anything
+            raise_oserror(err_code)
+
+        return Image.Image.load(self)
+
+    def load_prepare(self):
+        # create image memory if necessary
+        if not self.im or self.im.mode != self.mode or self.im.size != self.size:
+            self.im = Image.core.new(self.mode, self.size)
+        # create palette (optional)
+        if self.mode == "P":
+            Image.Image.load(self)
+
+    def load_end(self):
+        # may be overridden
+        pass
+
+    # may be defined for contained formats
+    # def load_seek(self, pos):
+    #     pass
+
+    # may be defined for blocked formats (e.g. PNG)
+    # def load_read(self, bytes):
+    #     pass
+
+    def _seek_check(self, frame):
+        if (
+            frame < self._min_frame
+            # Only check upper limit on frames if additional seek operations
+            # are not required to do so
+            or (
+                not (hasattr(self, "_n_frames") and self._n_frames is None)
+                and frame >= self.n_frames + self._min_frame
+            )
+        ):
+            msg = "attempt to seek outside sequence"
+            raise EOFError(msg)
+
+        return self.tell() != frame
+
+
+class StubImageFile(ImageFile):
+    """
+    Base class for stub image loaders.
+
+    A stub loader is an image loader that can identify files of a
+    certain format, but relies on external code to load the file.
+    """
+
+    def _open(self):
+        msg = "StubImageFile subclass must implement _open"
+        raise NotImplementedError(msg)
+
+    def load(self):
+        loader = self._load()
+        if loader is None:
+            msg = f"cannot find loader for this {self.format} file"
+            raise OSError(msg)
+        image = loader.load(self)
+        assert image is not None
+        # become the other object (!)
+        self.__class__ = image.__class__
+        self.__dict__ = image.__dict__
+        return image.load()
+
+    def _load(self):
+        """(Hook) Find actual image loader."""
+        msg = "StubImageFile subclass must implement _load"
+        raise NotImplementedError(msg)
+
+
+class Parser:
+    """
+    Incremental image parser.  This class implements the standard
+    feed/close consumer interface.
+    """
+
+    incremental = None
+    image = None
+    data = None
+    decoder = None
+    offset = 0
+    finished = 0
+
+    def reset(self):
+        """
+        (Consumer) Reset the parser.  Note that you can only call this
+        method immediately after you've created a parser; parser
+        instances cannot be reused.
+        """
+        assert self.data is None, "cannot reuse parsers"
+
+    def feed(self, data):
+        """
+        (Consumer) Feed data to the parser.
+
+        :param data: A string buffer.
+        :exception OSError: If the parser failed to parse the image file.
+        """
+        # collect data
+
+        if self.finished:
+            return
+
+        if self.data is None:
+            self.data = data
+        else:
+            self.data = self.data + data
+
+        # parse what we have
+        if self.decoder:
+            if self.offset > 0:
+                # skip header
+                skip = min(len(self.data), self.offset)
+                self.data = self.data[skip:]
+                self.offset = self.offset - skip
+                if self.offset > 0 or not self.data:
+                    return
+
+            n, e = self.decoder.decode(self.data)
+
+            if n < 0:
+                # end of stream
+                self.data = None
+                self.finished = 1
+                if e < 0:
+                    # decoding error
+                    self.image = None
+                    raise_oserror(e)
+                else:
+                    # end of image
+                    return
+            self.data = self.data[n:]
+
+        elif self.image:
+            # if we end up here with no decoder, this file cannot
+            # be incrementally parsed.  wait until we've gotten all
+            # available data
+            pass
+
+        else:
+            # attempt to open this file
+            try:
+                with io.BytesIO(self.data) as fp:
+                    im = Image.open(fp)
+            except OSError:
+                # traceback.print_exc()
+                pass  # not enough data
+            else:
+                flag = hasattr(im, "load_seek") or hasattr(im, "load_read")
+                if flag or len(im.tile) != 1:
+                    # custom load code, or multiple tiles
+                    self.decode = None
+                else:
+                    # initialize decoder
+                    im.load_prepare()
+                    d, e, o, a = im.tile[0]
+                    im.tile = []
+                    self.decoder = Image._getdecoder(im.mode, d, a, im.decoderconfig)
+                    self.decoder.setimage(im.im, e)
+
+                    # calculate decoder offset
+                    self.offset = o
+                    if self.offset <= len(self.data):
+                        self.data = self.data[self.offset :]
+                        self.offset = 0
+
+                self.image = im
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *args):
+        self.close()
+
+    def close(self):
+        """
+        (Consumer) Close the stream.
+
+        :returns: An image object.
+        :exception OSError: If the parser failed to parse the image file either
+                            because it cannot be identified or cannot be
+                            decoded.
+        """
+        # finish decoding
+        if self.decoder:
+            # get rid of what's left in the buffers
+            self.feed(b"")
+            self.data = self.decoder = None
+            if not self.finished:
+                msg = "image was incomplete"
+                raise OSError(msg)
+        if not self.image:
+            msg = "cannot parse this image"
+            raise OSError(msg)
+        if self.data:
+            # incremental parsing not possible; reopen the file
+            # not that we have all data
+            with io.BytesIO(self.data) as fp:
+                try:
+                    self.image = Image.open(fp)
+                finally:
+                    self.image.load()
+        return self.image
+
+
+# --------------------------------------------------------------------
+
+
+def _save(im, fp, tile, bufsize=0):
+    """Helper to save image based on tile list
+
+    :param im: Image object.
+    :param fp: File object.
+    :param tile: Tile list.
+    :param bufsize: Optional buffer size
+    """
+
+    im.load()
+    if not hasattr(im, "encoderconfig"):
+        im.encoderconfig = ()
+    tile.sort(key=_tilesort)
+    # FIXME: make MAXBLOCK a configuration parameter
+    # It would be great if we could have the encoder specify what it needs
+    # But, it would need at least the image size in most cases. RawEncode is
+    # a tricky case.
+    bufsize = max(MAXBLOCK, bufsize, im.size[0] * 4)  # see RawEncode.c
+    try:
+        fh = fp.fileno()
+        fp.flush()
+        _encode_tile(im, fp, tile, bufsize, fh)
+    except (AttributeError, io.UnsupportedOperation) as exc:
+        _encode_tile(im, fp, tile, bufsize, None, exc)
+    if hasattr(fp, "flush"):
+        fp.flush()
+
+
+def _encode_tile(im, fp, tile, bufsize, fh, exc=None):
+    for e, b, o, a in tile:
+        if o > 0:
+            fp.seek(o)
+        encoder = Image._getencoder(im.mode, e, a, im.encoderconfig)
+        try:
+            encoder.setimage(im.im, b)
+            if encoder.pushes_fd:
+                encoder.setfd(fp)
+                errcode = encoder.encode_to_pyfd()[1]
+            else:
+                if exc:
+                    # compress to Python file-compatible object
+                    while True:
+                        errcode, data = encoder.encode(bufsize)[1:]
+                        fp.write(data)
+                        if errcode:
+                            break
+                else:
+                    # slight speedup: compress to real file object
+                    errcode = encoder.encode_to_file(fh, bufsize)
+            if errcode < 0:
+                msg = f"encoder error {errcode} when writing image file"
+                raise OSError(msg) from exc
+        finally:
+            encoder.cleanup()
+
+
+def _safe_read(fp, size):
+    """
+    Reads large blocks in a safe way.  Unlike fp.read(n), this function
+    doesn't trust the user.  If the requested size is larger than
+    SAFEBLOCK, the file is read block by block.
+
+    :param fp: File handle.  Must implement a <b>read</b> method.
+    :param size: Number of bytes to read.
+    :returns: A string containing <i>size</i> bytes of data.
+
+    Raises an OSError if the file is truncated and the read cannot be completed
+
+    """
+    if size <= 0:
+        return b""
+    if size <= SAFEBLOCK:
+        data = fp.read(size)
+        if len(data) < size:
+            msg = "Truncated File Read"
+            raise OSError(msg)
+        return data
+    data = []
+    remaining_size = size
+    while remaining_size > 0:
+        block = fp.read(min(remaining_size, SAFEBLOCK))
+        if not block:
+            break
+        data.append(block)
+        remaining_size -= len(block)
+    if sum(len(d) for d in data) < size:
+        msg = "Truncated File Read"
+        raise OSError(msg)
+    return b"".join(data)
+
+
+class PyCodecState:
+    def __init__(self):
+        self.xsize = 0
+        self.ysize = 0
+        self.xoff = 0
+        self.yoff = 0
+
+    def extents(self):
+        return self.xoff, self.yoff, self.xoff + self.xsize, self.yoff + self.ysize
+
+
+class PyCodec:
+    def __init__(self, mode, *args):
+        self.im = None
+        self.state = PyCodecState()
+        self.fd = None
+        self.mode = mode
+        self.init(args)
+
+    def init(self, args):
+        """
+        Override to perform codec specific initialization
+
+        :param args: Array of args items from the tile entry
+        :returns: None
+        """
+        self.args = args
+
+    def cleanup(self):
+        """
+        Override to perform codec specific cleanup
+
+        :returns: None
+        """
+        pass
+
+    def setfd(self, fd):
+        """
+        Called from ImageFile to set the Python file-like object
+
+        :param fd: A Python file-like object
+        :returns: None
+        """
+        self.fd = fd
+
+    def setimage(self, im, extents=None):
+        """
+        Called from ImageFile to set the core output image for the codec
+
+        :param im: A core image object
+        :param extents: a 4 tuple of (x0, y0, x1, y1) defining the rectangle
+            for this tile
+        :returns: None
+        """
+
+        # following c code
+        self.im = im
+
+        if extents:
+            (x0, y0, x1, y1) = extents
+        else:
+            (x0, y0, x1, y1) = (0, 0, 0, 0)
+
+        if x0 == 0 and x1 == 0:
+            self.state.xsize, self.state.ysize = self.im.size
+        else:
+            self.state.xoff = x0
+            self.state.yoff = y0
+            self.state.xsize = x1 - x0
+            self.state.ysize = y1 - y0
+
+        if self.state.xsize <= 0 or self.state.ysize <= 0:
+            msg = "Size cannot be negative"
+            raise ValueError(msg)
+
+        if (
+            self.state.xsize + self.state.xoff > self.im.size[0]
+            or self.state.ysize + self.state.yoff > self.im.size[1]
+        ):
+            msg = "Tile cannot extend outside image"
+            raise ValueError(msg)
+
+
+class PyDecoder(PyCodec):
+    """
+    Python implementation of a format decoder. Override this class and
+    add the decoding logic in the :meth:`decode` method.
+
+    See :ref:`Writing Your Own File Codec in Python<file-codecs-py>`
+    """
+
+    _pulls_fd = False
+
+    @property
+    def pulls_fd(self):
+        return self._pulls_fd
+
+    def decode(self, buffer):
+        """
+        Override to perform the decoding process.
+
+        :param buffer: A bytes object with the data to be decoded.
+        :returns: A tuple of ``(bytes consumed, errcode)``.
+            If finished with decoding return -1 for the bytes consumed.
+            Err codes are from :data:`.ImageFile.ERRORS`.
+        """
+        raise NotImplementedError()
+
+    def set_as_raw(self, data, rawmode=None):
+        """
+        Convenience method to set the internal image from a stream of raw data
+
+        :param data: Bytes to be set
+        :param rawmode: The rawmode to be used for the decoder.
+            If not specified, it will default to the mode of the image
+        :returns: None
+        """
+
+        if not rawmode:
+            rawmode = self.mode
+        d = Image._getdecoder(self.mode, "raw", rawmode)
+        d.setimage(self.im, self.state.extents())
+        s = d.decode(data)
+
+        if s[0] >= 0:
+            msg = "not enough image data"
+            raise ValueError(msg)
+        if s[1] != 0:
+            msg = "cannot decode image data"
+            raise ValueError(msg)
+
+
+class PyEncoder(PyCodec):
+    """
+    Python implementation of a format encoder. Override this class and
+    add the decoding logic in the :meth:`encode` method.
+
+    See :ref:`Writing Your Own File Codec in Python<file-codecs-py>`
+    """
+
+    _pushes_fd = False
+
+    @property
+    def pushes_fd(self):
+        return self._pushes_fd
+
+    def encode(self, bufsize):
+        """
+        Override to perform the encoding process.
+
+        :param bufsize: Buffer size.
+        :returns: A tuple of ``(bytes encoded, errcode, bytes)``.
+            If finished with encoding return 1 for the error code.
+            Err codes are from :data:`.ImageFile.ERRORS`.
+        """
+        raise NotImplementedError()
+
+    def encode_to_pyfd(self):
+        """
+        If ``pushes_fd`` is ``True``, then this method will be used,
+        and ``encode()`` will only be called once.
+
+        :returns: A tuple of ``(bytes consumed, errcode)``.
+            Err codes are from :data:`.ImageFile.ERRORS`.
+        """
+        if not self.pushes_fd:
+            return 0, -8  # bad configuration
+        bytes_consumed, errcode, data = self.encode(0)
+        if data:
+            self.fd.write(data)
+        return bytes_consumed, errcode
+
+    def encode_to_file(self, fh, bufsize):
+        """
+        :param fh: File handle.
+        :param bufsize: Buffer size.
+
+        :returns: If finished successfully, return 0.
+            Otherwise, return an error code. Err codes are from
+            :data:`.ImageFile.ERRORS`.
+        """
+        errcode = 0
+        while errcode == 0:
+            status, errcode, buf = self.encode(bufsize)
+            if status > 0:
+                fh.write(buf[status:])
+        return errcode

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageFilter.py

@@ -0,0 +1,550 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# standard filters
+#
+# History:
+# 1995-11-27 fl   Created
+# 2002-06-08 fl   Added rank and mode filters
+# 2003-09-15 fl   Fixed rank calculation in rank filter; added expand call
+#
+# Copyright (c) 1997-2003 by Secret Labs AB.
+# Copyright (c) 1995-2002 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+import functools
+
+
+class Filter:
+    pass
+
+
+class MultibandFilter(Filter):
+    pass
+
+
+class BuiltinFilter(MultibandFilter):
+    def filter(self, image):
+        if image.mode == "P":
+            msg = "cannot filter palette images"
+            raise ValueError(msg)
+        return image.filter(*self.filterargs)
+
+
+class Kernel(BuiltinFilter):
+    """
+    Create a convolution kernel. The current version only
+    supports 3x3 and 5x5 integer and floating point kernels.
+
+    In the current version, kernels can only be applied to
+    "L" and "RGB" images.
+
+    :param size: Kernel size, given as (width, height). In the current
+                    version, this must be (3,3) or (5,5).
+    :param kernel: A sequence containing kernel weights. The kernel will
+                   be flipped vertically before being applied to the image.
+    :param scale: Scale factor. If given, the result for each pixel is
+                    divided by this value. The default is the sum of the
+                    kernel weights.
+    :param offset: Offset. If given, this value is added to the result,
+                    after it has been divided by the scale factor.
+    """
+
+    name = "Kernel"
+
+    def __init__(self, size, kernel, scale=None, offset=0):
+        if scale is None:
+            # default scale is sum of kernel
+            scale = functools.reduce(lambda a, b: a + b, kernel)
+        if size[0] * size[1] != len(kernel):
+            msg = "not enough coefficients in kernel"
+            raise ValueError(msg)
+        self.filterargs = size, scale, offset, kernel
+
+
+class RankFilter(Filter):
+    """
+    Create a rank filter.  The rank filter sorts all pixels in
+    a window of the given size, and returns the ``rank``'th value.
+
+    :param size: The kernel size, in pixels.
+    :param rank: What pixel value to pick.  Use 0 for a min filter,
+                 ``size * size / 2`` for a median filter, ``size * size - 1``
+                 for a max filter, etc.
+    """
+
+    name = "Rank"
+
+    def __init__(self, size, rank):
+        self.size = size
+        self.rank = rank
+
+    def filter(self, image):
+        if image.mode == "P":
+            msg = "cannot filter palette images"
+            raise ValueError(msg)
+        image = image.expand(self.size // 2, self.size // 2)
+        return image.rankfilter(self.size, self.rank)
+
+
+class MedianFilter(RankFilter):
+    """
+    Create a median filter. Picks the median pixel value in a window with the
+    given size.
+
+    :param size: The kernel size, in pixels.
+    """
+
+    name = "Median"
+
+    def __init__(self, size=3):
+        self.size = size
+        self.rank = size * size // 2
+
+
+class MinFilter(RankFilter):
+    """
+    Create a min filter.  Picks the lowest pixel value in a window with the
+    given size.
+
+    :param size: The kernel size, in pixels.
+    """
+
+    name = "Min"
+
+    def __init__(self, size=3):
+        self.size = size
+        self.rank = 0
+
+
+class MaxFilter(RankFilter):
+    """
+    Create a max filter.  Picks the largest pixel value in a window with the
+    given size.
+
+    :param size: The kernel size, in pixels.
+    """
+
+    name = "Max"
+
+    def __init__(self, size=3):
+        self.size = size
+        self.rank = size * size - 1
+
+
+class ModeFilter(Filter):
+    """
+    Create a mode filter. Picks the most frequent pixel value in a box with the
+    given size.  Pixel values that occur only once or twice are ignored; if no
+    pixel value occurs more than twice, the original pixel value is preserved.
+
+    :param size: The kernel size, in pixels.
+    """
+
+    name = "Mode"
+
+    def __init__(self, size=3):
+        self.size = size
+
+    def filter(self, image):
+        return image.modefilter(self.size)
+
+
+class GaussianBlur(MultibandFilter):
+    """Blurs the image with a sequence of extended box filters, which
+    approximates a Gaussian kernel. For details on accuracy see
+    <https://www.mia.uni-saarland.de/Publications/gwosdek-ssvm11.pdf>
+
+    :param radius: Standard deviation of the Gaussian kernel.
+    """
+
+    name = "GaussianBlur"
+
+    def __init__(self, radius=2):
+        self.radius = radius
+
+    def filter(self, image):
+        return image.gaussian_blur(self.radius)
+
+
+class BoxBlur(MultibandFilter):
+    """Blurs the image by setting each pixel to the average value of the pixels
+    in a square box extending radius pixels in each direction.
+    Supports float radius of arbitrary size. Uses an optimized implementation
+    which runs in linear time relative to the size of the image
+    for any radius value.
+
+    :param radius: Size of the box in one direction. Radius 0 does not blur,
+                   returns an identical image. Radius 1 takes 1 pixel
+                   in each direction, i.e. 9 pixels in total.
+    """
+
+    name = "BoxBlur"
+
+    def __init__(self, radius):
+        if radius < 0:
+            msg = "radius must be >= 0"
+            raise ValueError(msg)
+        self.radius = radius
+
+    def filter(self, image):
+        return image.box_blur(self.radius)
+
+
+class UnsharpMask(MultibandFilter):
+    """Unsharp mask filter.
+
+    See Wikipedia's entry on `digital unsharp masking`_ for an explanation of
+    the parameters.
+
+    :param radius: Blur Radius
+    :param percent: Unsharp strength, in percent
+    :param threshold: Threshold controls the minimum brightness change that
+      will be sharpened
+
+    .. _digital unsharp masking: https://en.wikipedia.org/wiki/Unsharp_masking#Digital_unsharp_masking
+
+    """  # noqa: E501
+
+    name = "UnsharpMask"
+
+    def __init__(self, radius=2, percent=150, threshold=3):
+        self.radius = radius
+        self.percent = percent
+        self.threshold = threshold
+
+    def filter(self, image):
+        return image.unsharp_mask(self.radius, self.percent, self.threshold)
+
+
+class BLUR(BuiltinFilter):
+    name = "Blur"
+    # fmt: off
+    filterargs = (5, 5), 16, 0, (
+        1, 1, 1, 1, 1,
+        1, 0, 0, 0, 1,
+        1, 0, 0, 0, 1,
+        1, 0, 0, 0, 1,
+        1, 1, 1, 1, 1,
+    )
+    # fmt: on
+
+
+class CONTOUR(BuiltinFilter):
+    name = "Contour"
+    # fmt: off
+    filterargs = (3, 3), 1, 255, (
+        -1, -1, -1,
+        -1,  8, -1,
+        -1, -1, -1,
+    )
+    # fmt: on
+
+
+class DETAIL(BuiltinFilter):
+    name = "Detail"
+    # fmt: off
+    filterargs = (3, 3), 6, 0, (
+        0,  -1,  0,
+        -1, 10, -1,
+        0,  -1,  0,
+    )
+    # fmt: on
+
+
+class EDGE_ENHANCE(BuiltinFilter):
+    name = "Edge-enhance"
+    # fmt: off
+    filterargs = (3, 3), 2, 0, (
+        -1, -1, -1,
+        -1, 10, -1,
+        -1, -1, -1,
+    )
+    # fmt: on
+
+
+class EDGE_ENHANCE_MORE(BuiltinFilter):
+    name = "Edge-enhance More"
+    # fmt: off
+    filterargs = (3, 3), 1, 0, (
+        -1, -1, -1,
+        -1,  9, -1,
+        -1, -1, -1,
+    )
+    # fmt: on
+
+
+class EMBOSS(BuiltinFilter):
+    name = "Emboss"
+    # fmt: off
+    filterargs = (3, 3), 1, 128, (
+        -1, 0, 0,
+        0,  1, 0,
+        0,  0, 0,
+    )
+    # fmt: on
+
+
+class FIND_EDGES(BuiltinFilter):
+    name = "Find Edges"
+    # fmt: off
+    filterargs = (3, 3), 1, 0, (
+        -1, -1, -1,
+        -1,  8, -1,
+        -1, -1, -1,
+    )
+    # fmt: on
+
+
+class SHARPEN(BuiltinFilter):
+    name = "Sharpen"
+    # fmt: off
+    filterargs = (3, 3), 16, 0, (
+        -2, -2, -2,
+        -2, 32, -2,
+        -2, -2, -2,
+    )
+    # fmt: on
+
+
+class SMOOTH(BuiltinFilter):
+    name = "Smooth"
+    # fmt: off
+    filterargs = (3, 3), 13, 0, (
+        1, 1, 1,
+        1, 5, 1,
+        1, 1, 1,
+    )
+    # fmt: on
+
+
+class SMOOTH_MORE(BuiltinFilter):
+    name = "Smooth More"
+    # fmt: off
+    filterargs = (5, 5), 100, 0, (
+        1, 1,  1, 1, 1,
+        1, 5,  5, 5, 1,
+        1, 5, 44, 5, 1,
+        1, 5,  5, 5, 1,
+        1, 1,  1, 1, 1,
+    )
+    # fmt: on
+
+
+class Color3DLUT(MultibandFilter):
+    """Three-dimensional color lookup table.
+
+    Transforms 3-channel pixels using the values of the channels as coordinates
+    in the 3D lookup table and interpolating the nearest elements.
+
+    This method allows you to apply almost any color transformation
+    in constant time by using pre-calculated decimated tables.
+
+    .. versionadded:: 5.2.0
+
+    :param size: Size of the table. One int or tuple of (int, int, int).
+                 Minimal size in any dimension is 2, maximum is 65.
+    :param table: Flat lookup table. A list of ``channels * size**3``
+                  float elements or a list of ``size**3`` channels-sized
+                  tuples with floats. Channels are changed first,
+                  then first dimension, then second, then third.
+                  Value 0.0 corresponds lowest value of output, 1.0 highest.
+    :param channels: Number of channels in the table. Could be 3 or 4.
+                     Default is 3.
+    :param target_mode: A mode for the result image. Should have not less
+                        than ``channels`` channels. Default is ``None``,
+                        which means that mode wouldn't be changed.
+    """
+
+    name = "Color 3D LUT"
+
+    def __init__(self, size, table, channels=3, target_mode=None, **kwargs):
+        if channels not in (3, 4):
+            msg = "Only 3 or 4 output channels are supported"
+            raise ValueError(msg)
+        self.size = size = self._check_size(size)
+        self.channels = channels
+        self.mode = target_mode
+
+        # Hidden flag `_copy_table=False` could be used to avoid extra copying
+        # of the table if the table is specially made for the constructor.
+        copy_table = kwargs.get("_copy_table", True)
+        items = size[0] * size[1] * size[2]
+        wrong_size = False
+
+        numpy = None
+        if hasattr(table, "shape"):
+            try:
+                import numpy
+            except ImportError:  # pragma: no cover
+                pass
+
+        if numpy and isinstance(table, numpy.ndarray):
+            if copy_table:
+                table = table.copy()
+
+            if table.shape in [
+                (items * channels,),
+                (items, channels),
+                (size[2], size[1], size[0], channels),
+            ]:
+                table = table.reshape(items * channels)
+            else:
+                wrong_size = True
+
+        else:
+            if copy_table:
+                table = list(table)
+
+            # Convert to a flat list
+            if table and isinstance(table[0], (list, tuple)):
+                table, raw_table = [], table
+                for pixel in raw_table:
+                    if len(pixel) != channels:
+                        msg = (
+                            "The elements of the table should "
+                            f"have a length of {channels}."
+                        )
+                        raise ValueError(msg)
+                    table.extend(pixel)
+
+        if wrong_size or len(table) != items * channels:
+            msg = (
+                "The table should have either channels * size**3 float items "
+                "or size**3 items of channels-sized tuples with floats. "
+                f"Table should be: {channels}x{size[0]}x{size[1]}x{size[2]}. "
+                f"Actual length: {len(table)}"
+            )
+            raise ValueError(msg)
+        self.table = table
+
+    @staticmethod
+    def _check_size(size):
+        try:
+            _, _, _ = size
+        except ValueError as e:
+            msg = "Size should be either an integer or a tuple of three integers."
+            raise ValueError(msg) from e
+        except TypeError:
+            size = (size, size, size)
+        size = [int(x) for x in size]
+        for size_1d in size:
+            if not 2 <= size_1d <= 65:
+                msg = "Size should be in [2, 65] range."
+                raise ValueError(msg)
+        return size
+
+    @classmethod
+    def generate(cls, size, callback, channels=3, target_mode=None):
+        """Generates new LUT using provided callback.
+
+        :param size: Size of the table. Passed to the constructor.
+        :param callback: Function with three parameters which correspond
+                         three color channels. Will be called ``size**3``
+                         times with values from 0.0 to 1.0 and should return
+                         a tuple with ``channels`` elements.
+        :param channels: The number of channels which should return callback.
+        :param target_mode: Passed to the constructor of the resulting
+                            lookup table.
+        """
+        size_1d, size_2d, size_3d = cls._check_size(size)
+        if channels not in (3, 4):
+            msg = "Only 3 or 4 output channels are supported"
+            raise ValueError(msg)
+
+        table = [0] * (size_1d * size_2d * size_3d * channels)
+        idx_out = 0
+        for b in range(size_3d):
+            for g in range(size_2d):
+                for r in range(size_1d):
+                    table[idx_out : idx_out + channels] = callback(
+                        r / (size_1d - 1), g / (size_2d - 1), b / (size_3d - 1)
+                    )
+                    idx_out += channels
+
+        return cls(
+            (size_1d, size_2d, size_3d),
+            table,
+            channels=channels,
+            target_mode=target_mode,
+            _copy_table=False,
+        )
+
+    def transform(self, callback, with_normals=False, channels=None, target_mode=None):
+        """Transforms the table values using provided callback and returns
+        a new LUT with altered values.
+
+        :param callback: A function which takes old lookup table values
+                         and returns a new set of values. The number
+                         of arguments which function should take is
+                         ``self.channels`` or ``3 + self.channels``
+                         if ``with_normals`` flag is set.
+                         Should return a tuple of ``self.channels`` or
+                         ``channels`` elements if it is set.
+        :param with_normals: If true, ``callback`` will be called with
+                             coordinates in the color cube as the first
+                             three arguments. Otherwise, ``callback``
+                             will be called only with actual color values.
+        :param channels: The number of channels in the resulting lookup table.
+        :param target_mode: Passed to the constructor of the resulting
+                            lookup table.
+        """
+        if channels not in (None, 3, 4):
+            msg = "Only 3 or 4 output channels are supported"
+            raise ValueError(msg)
+        ch_in = self.channels
+        ch_out = channels or ch_in
+        size_1d, size_2d, size_3d = self.size
+
+        table = [0] * (size_1d * size_2d * size_3d * ch_out)
+        idx_in = 0
+        idx_out = 0
+        for b in range(size_3d):
+            for g in range(size_2d):
+                for r in range(size_1d):
+                    values = self.table[idx_in : idx_in + ch_in]
+                    if with_normals:
+                        values = callback(
+                            r / (size_1d - 1),
+                            g / (size_2d - 1),
+                            b / (size_3d - 1),
+                            *values,
+                        )
+                    else:
+                        values = callback(*values)
+                    table[idx_out : idx_out + ch_out] = values
+                    idx_in += ch_in
+                    idx_out += ch_out
+
+        return type(self)(
+            self.size,
+            table,
+            channels=ch_out,
+            target_mode=target_mode or self.mode,
+            _copy_table=False,
+        )
+
+    def __repr__(self):
+        r = [
+            f"{self.__class__.__name__} from {self.table.__class__.__name__}",
+            "size={:d}x{:d}x{:d}".format(*self.size),
+            f"channels={self.channels:d}",
+        ]
+        if self.mode:
+            r.append(f"target_mode={self.mode}")
+        return "<{}>".format(" ".join(r))
+
+    def filter(self, image):
+        from . import Image
+
+        return image.color_lut_3d(
+            self.mode or image.mode,
+            Image.Resampling.BILINEAR,
+            self.channels,
+            self.size[0],
+            self.size[1],
+            self.size[2],
+            self.table,
+        )

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageFont.py

@@ -0,0 +1,997 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# PIL raster font management
+#
+# History:
+# 1996-08-07 fl   created (experimental)
+# 1997-08-25 fl   minor adjustments to handle fonts from pilfont 0.3
+# 1999-02-06 fl   rewrote most font management stuff in C
+# 1999-03-17 fl   take pth files into account in load_path (from Richard Jones)
+# 2001-02-17 fl   added freetype support
+# 2001-05-09 fl   added TransposedFont wrapper class
+# 2002-03-04 fl   make sure we have a "L" or "1" font
+# 2002-12-04 fl   skip non-directory entries in the system path
+# 2003-04-29 fl   add embedded default font
+# 2003-09-27 fl   added support for truetype charmap encodings
+#
+# Todo:
+# Adapt to PILFONT2 format (16-bit fonts, compressed, single file)
+#
+# Copyright (c) 1997-2003 by Secret Labs AB
+# Copyright (c) 1996-2003 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import base64
+import os
+import sys
+import warnings
+from enum import IntEnum
+from io import BytesIO
+
+from . import Image
+from ._util import is_directory, is_path
+
+
+class Layout(IntEnum):
+    BASIC = 0
+    RAQM = 1
+
+
+MAX_STRING_LENGTH = 1_000_000
+
+
+try:
+    from . import _imagingft as core
+except ImportError as ex:
+    from ._util import DeferredError
+
+    core = DeferredError(ex)
+
+
+def _string_length_check(text):
+    if MAX_STRING_LENGTH is not None and len(text) > MAX_STRING_LENGTH:
+        msg = "too many characters in string"
+        raise ValueError(msg)
+
+
+# FIXME: add support for pilfont2 format (see FontFile.py)
+
+# --------------------------------------------------------------------
+# Font metrics format:
+#       "PILfont" LF
+#       fontdescriptor LF
+#       (optional) key=value... LF
+#       "DATA" LF
+#       binary data: 256*10*2 bytes (dx, dy, dstbox, srcbox)
+#
+# To place a character, cut out srcbox and paste at dstbox,
+# relative to the character position.  Then move the character
+# position according to dx, dy.
+# --------------------------------------------------------------------
+
+
+class ImageFont:
+    """PIL font wrapper"""
+
+    def _load_pilfont(self, filename):
+        with open(filename, "rb") as fp:
+            image = None
+            for ext in (".png", ".gif", ".pbm"):
+                if image:
+                    image.close()
+                try:
+                    fullname = os.path.splitext(filename)[0] + ext
+                    image = Image.open(fullname)
+                except Exception:
+                    pass
+                else:
+                    if image and image.mode in ("1", "L"):
+                        break
+            else:
+                if image:
+                    image.close()
+                msg = "cannot find glyph data file"
+                raise OSError(msg)
+
+            self.file = fullname
+
+            self._load_pilfont_data(fp, image)
+            image.close()
+
+    def _load_pilfont_data(self, file, image):
+        # read PILfont header
+        if file.readline() != b"PILfont\n":
+            msg = "Not a PILfont file"
+            raise SyntaxError(msg)
+        file.readline().split(b";")
+        self.info = []  # FIXME: should be a dictionary
+        while True:
+            s = file.readline()
+            if not s or s == b"DATA\n":
+                break
+            self.info.append(s)
+
+        # read PILfont metrics
+        data = file.read(256 * 20)
+
+        # check image
+        if image.mode not in ("1", "L"):
+            msg = "invalid font image mode"
+            raise TypeError(msg)
+
+        image.load()
+
+        self.font = Image.core.font(image.im, data)
+
+    def getmask(self, text, mode="", *args, **kwargs):
+        """
+        Create a bitmap for the text.
+
+        If the font uses antialiasing, the bitmap should have mode ``L`` and use a
+        maximum value of 255. Otherwise, it should have mode ``1``.
+
+        :param text: Text to render.
+        :param mode: Used by some graphics drivers to indicate what mode the
+                     driver prefers; if empty, the renderer may return either
+                     mode. Note that the mode is always a string, to simplify
+                     C-level implementations.
+
+                     .. versionadded:: 1.1.5
+
+        :return: An internal PIL storage memory instance as defined by the
+                 :py:mod:`PIL.Image.core` interface module.
+        """
+        return self.font.getmask(text, mode)
+
+    def getbbox(self, text, *args, **kwargs):
+        """
+        Returns bounding box (in pixels) of given text.
+
+        .. versionadded:: 9.2.0
+
+        :param text: Text to render.
+        :param mode: Used by some graphics drivers to indicate what mode the
+                     driver prefers; if empty, the renderer may return either
+                     mode. Note that the mode is always a string, to simplify
+                     C-level implementations.
+
+        :return: ``(left, top, right, bottom)`` bounding box
+        """
+        _string_length_check(text)
+        width, height = self.font.getsize(text)
+        return 0, 0, width, height
+
+    def getlength(self, text, *args, **kwargs):
+        """
+        Returns length (in pixels) of given text.
+        This is the amount by which following text should be offset.
+
+        .. versionadded:: 9.2.0
+        """
+        _string_length_check(text)
+        width, height = self.font.getsize(text)
+        return width
+
+
+##
+# Wrapper for FreeType fonts.  Application code should use the
+# <b>truetype</b> factory function to create font objects.
+
+
+class FreeTypeFont:
+    """FreeType font wrapper (requires _imagingft service)"""
+
+    def __init__(self, font=None, size=10, index=0, encoding="", layout_engine=None):
+        # FIXME: use service provider instead
+
+        self.path = font
+        self.size = size
+        self.index = index
+        self.encoding = encoding
+
+        if layout_engine not in (Layout.BASIC, Layout.RAQM):
+            layout_engine = Layout.BASIC
+            if core.HAVE_RAQM:
+                layout_engine = Layout.RAQM
+        elif layout_engine == Layout.RAQM and not core.HAVE_RAQM:
+            warnings.warn(
+                "Raqm layout was requested, but Raqm is not available. "
+                "Falling back to basic layout."
+            )
+            layout_engine = Layout.BASIC
+
+        self.layout_engine = layout_engine
+
+        def load_from_bytes(f):
+            self.font_bytes = f.read()
+            self.font = core.getfont(
+                "", size, index, encoding, self.font_bytes, layout_engine
+            )
+
+        if is_path(font):
+            if sys.platform == "win32":
+                font_bytes_path = font if isinstance(font, bytes) else font.encode()
+                try:
+                    font_bytes_path.decode("ascii")
+                except UnicodeDecodeError:
+                    # FreeType cannot load fonts with non-ASCII characters on Windows
+                    # So load it into memory first
+                    with open(font, "rb") as f:
+                        load_from_bytes(f)
+                    return
+            self.font = core.getfont(
+                font, size, index, encoding, layout_engine=layout_engine
+            )
+        else:
+            load_from_bytes(font)
+
+    def __getstate__(self):
+        return [self.path, self.size, self.index, self.encoding, self.layout_engine]
+
+    def __setstate__(self, state):
+        path, size, index, encoding, layout_engine = state
+        self.__init__(path, size, index, encoding, layout_engine)
+
+    def getname(self):
+        """
+        :return: A tuple of the font family (e.g. Helvetica) and the font style
+            (e.g. Bold)
+        """
+        return self.font.family, self.font.style
+
+    def getmetrics(self):
+        """
+        :return: A tuple of the font ascent (the distance from the baseline to
+            the highest outline point) and descent (the distance from the
+            baseline to the lowest outline point, a negative value)
+        """
+        return self.font.ascent, self.font.descent
+
+    def getlength(self, text, mode="", direction=None, features=None, language=None):
+        """
+        Returns length (in pixels with 1/64 precision) of given text when rendered
+        in font with provided direction, features, and language.
+
+        This is the amount by which following text should be offset.
+        Text bounding box may extend past the length in some fonts,
+        e.g. when using italics or accents.
+
+        The result is returned as a float; it is a whole number if using basic layout.
+
+        Note that the sum of two lengths may not equal the length of a concatenated
+        string due to kerning. If you need to adjust for kerning, include the following
+        character and subtract its length.
+
+        For example, instead of ::
+
+          hello = font.getlength("Hello")
+          world = font.getlength("World")
+          hello_world = hello + world  # not adjusted for kerning
+          assert hello_world == font.getlength("HelloWorld")  # may fail
+
+        use ::
+
+          hello = font.getlength("HelloW") - font.getlength("W")  # adjusted for kerning
+          world = font.getlength("World")
+          hello_world = hello + world  # adjusted for kerning
+          assert hello_world == font.getlength("HelloWorld")  # True
+
+        or disable kerning with (requires libraqm) ::
+
+          hello = draw.textlength("Hello", font, features=["-kern"])
+          world = draw.textlength("World", font, features=["-kern"])
+          hello_world = hello + world  # kerning is disabled, no need to adjust
+          assert hello_world == draw.textlength("HelloWorld", font, features=["-kern"])
+
+        .. versionadded:: 8.0.0
+
+        :param text: Text to measure.
+        :param mode: Used by some graphics drivers to indicate what mode the
+                     driver prefers; if empty, the renderer may return either
+                     mode. Note that the mode is always a string, to simplify
+                     C-level implementations.
+
+        :param direction: Direction of the text. It can be 'rtl' (right to
+                          left), 'ltr' (left to right) or 'ttb' (top to bottom).
+                          Requires libraqm.
+
+        :param features: A list of OpenType font features to be used during text
+                         layout. This is usually used to turn on optional
+                         font features that are not enabled by default,
+                         for example 'dlig' or 'ss01', but can be also
+                         used to turn off default font features for
+                         example '-liga' to disable ligatures or '-kern'
+                         to disable kerning.  To get all supported
+                         features, see
+                         https://learn.microsoft.com/en-us/typography/opentype/spec/featurelist
+                         Requires libraqm.
+
+        :param language: Language of the text. Different languages may use
+                         different glyph shapes or ligatures. This parameter tells
+                         the font which language the text is in, and to apply the
+                         correct substitutions as appropriate, if available.
+                         It should be a `BCP 47 language code
+                         <https://www.w3.org/International/articles/language-tags/>`_
+                         Requires libraqm.
+
+        :return: Width for horizontal, height for vertical text.
+        """
+        _string_length_check(text)
+        return self.font.getlength(text, mode, direction, features, language) / 64
+
+    def getbbox(
+        self,
+        text,
+        mode="",
+        direction=None,
+        features=None,
+        language=None,
+        stroke_width=0,
+        anchor=None,
+    ):
+        """
+        Returns bounding box (in pixels) of given text relative to given anchor
+        when rendered in font with provided direction, features, and language.
+
+        Use :py:meth:`getlength()` to get the offset of following text with
+        1/64 pixel precision. The bounding box includes extra margins for
+        some fonts, e.g. italics or accents.
+
+        .. versionadded:: 8.0.0
+
+        :param text: Text to render.
+        :param mode: Used by some graphics drivers to indicate what mode the
+                     driver prefers; if empty, the renderer may return either
+                     mode. Note that the mode is always a string, to simplify
+                     C-level implementations.
+
+        :param direction: Direction of the text. It can be 'rtl' (right to
+                          left), 'ltr' (left to right) or 'ttb' (top to bottom).
+                          Requires libraqm.
+
+        :param features: A list of OpenType font features to be used during text
+                         layout. This is usually used to turn on optional
+                         font features that are not enabled by default,
+                         for example 'dlig' or 'ss01', but can be also
+                         used to turn off default font features for
+                         example '-liga' to disable ligatures or '-kern'
+                         to disable kerning.  To get all supported
+                         features, see
+                         https://learn.microsoft.com/en-us/typography/opentype/spec/featurelist
+                         Requires libraqm.
+
+        :param language: Language of the text. Different languages may use
+                         different glyph shapes or ligatures. This parameter tells
+                         the font which language the text is in, and to apply the
+                         correct substitutions as appropriate, if available.
+                         It should be a `BCP 47 language code
+                         <https://www.w3.org/International/articles/language-tags/>`_
+                         Requires libraqm.
+
+        :param stroke_width: The width of the text stroke.
+
+        :param anchor:  The text anchor alignment. Determines the relative location of
+                        the anchor to the text. The default alignment is top left.
+                        See :ref:`text-anchors` for valid values.
+
+        :return: ``(left, top, right, bottom)`` bounding box
+        """
+        _string_length_check(text)
+        size, offset = self.font.getsize(
+            text, mode, direction, features, language, anchor
+        )
+        left, top = offset[0] - stroke_width, offset[1] - stroke_width
+        width, height = size[0] + 2 * stroke_width, size[1] + 2 * stroke_width
+        return left, top, left + width, top + height
+
+    def getmask(
+        self,
+        text,
+        mode="",
+        direction=None,
+        features=None,
+        language=None,
+        stroke_width=0,
+        anchor=None,
+        ink=0,
+        start=None,
+    ):
+        """
+        Create a bitmap for the text.
+
+        If the font uses antialiasing, the bitmap should have mode ``L`` and use a
+        maximum value of 255. If the font has embedded color data, the bitmap
+        should have mode ``RGBA``. Otherwise, it should have mode ``1``.
+
+        :param text: Text to render.
+        :param mode: Used by some graphics drivers to indicate what mode the
+                     driver prefers; if empty, the renderer may return either
+                     mode. Note that the mode is always a string, to simplify
+                     C-level implementations.
+
+                     .. versionadded:: 1.1.5
+
+        :param direction: Direction of the text. It can be 'rtl' (right to
+                          left), 'ltr' (left to right) or 'ttb' (top to bottom).
+                          Requires libraqm.
+
+                          .. versionadded:: 4.2.0
+
+        :param features: A list of OpenType font features to be used during text
+                         layout. This is usually used to turn on optional
+                         font features that are not enabled by default,
+                         for example 'dlig' or 'ss01', but can be also
+                         used to turn off default font features for
+                         example '-liga' to disable ligatures or '-kern'
+                         to disable kerning.  To get all supported
+                         features, see
+                         https://learn.microsoft.com/en-us/typography/opentype/spec/featurelist
+                         Requires libraqm.
+
+                         .. versionadded:: 4.2.0
+
+        :param language: Language of the text. Different languages may use
+                         different glyph shapes or ligatures. This parameter tells
+                         the font which language the text is in, and to apply the
+                         correct substitutions as appropriate, if available.
+                         It should be a `BCP 47 language code
+                         <https://www.w3.org/International/articles/language-tags/>`_
+                         Requires libraqm.
+
+                         .. versionadded:: 6.0.0
+
+        :param stroke_width: The width of the text stroke.
+
+                         .. versionadded:: 6.2.0
+
+        :param anchor:  The text anchor alignment. Determines the relative location of
+                        the anchor to the text. The default alignment is top left.
+                        See :ref:`text-anchors` for valid values.
+
+                         .. versionadded:: 8.0.0
+
+        :param ink: Foreground ink for rendering in RGBA mode.
+
+                         .. versionadded:: 8.0.0
+
+        :param start: Tuple of horizontal and vertical offset, as text may render
+                      differently when starting at fractional coordinates.
+
+                         .. versionadded:: 9.4.0
+
+        :return: An internal PIL storage memory instance as defined by the
+                 :py:mod:`PIL.Image.core` interface module.
+        """
+        return self.getmask2(
+            text,
+            mode,
+            direction=direction,
+            features=features,
+            language=language,
+            stroke_width=stroke_width,
+            anchor=anchor,
+            ink=ink,
+            start=start,
+        )[0]
+
+    def getmask2(
+        self,
+        text,
+        mode="",
+        direction=None,
+        features=None,
+        language=None,
+        stroke_width=0,
+        anchor=None,
+        ink=0,
+        start=None,
+        *args,
+        **kwargs,
+    ):
+        """
+        Create a bitmap for the text.
+
+        If the font uses antialiasing, the bitmap should have mode ``L`` and use a
+        maximum value of 255. If the font has embedded color data, the bitmap
+        should have mode ``RGBA``. Otherwise, it should have mode ``1``.
+
+        :param text: Text to render.
+        :param mode: Used by some graphics drivers to indicate what mode the
+                     driver prefers; if empty, the renderer may return either
+                     mode. Note that the mode is always a string, to simplify
+                     C-level implementations.
+
+                     .. versionadded:: 1.1.5
+
+        :param direction: Direction of the text. It can be 'rtl' (right to
+                          left), 'ltr' (left to right) or 'ttb' (top to bottom).
+                          Requires libraqm.
+
+                          .. versionadded:: 4.2.0
+
+        :param features: A list of OpenType font features to be used during text
+                         layout. This is usually used to turn on optional
+                         font features that are not enabled by default,
+                         for example 'dlig' or 'ss01', but can be also
+                         used to turn off default font features for
+                         example '-liga' to disable ligatures or '-kern'
+                         to disable kerning.  To get all supported
+                         features, see
+                         https://learn.microsoft.com/en-us/typography/opentype/spec/featurelist
+                         Requires libraqm.
+
+                         .. versionadded:: 4.2.0
+
+        :param language: Language of the text. Different languages may use
+                         different glyph shapes or ligatures. This parameter tells
+                         the font which language the text is in, and to apply the
+                         correct substitutions as appropriate, if available.
+                         It should be a `BCP 47 language code
+                         <https://www.w3.org/International/articles/language-tags/>`_
+                         Requires libraqm.
+
+                         .. versionadded:: 6.0.0
+
+        :param stroke_width: The width of the text stroke.
+
+                         .. versionadded:: 6.2.0
+
+        :param anchor:  The text anchor alignment. Determines the relative location of
+                        the anchor to the text. The default alignment is top left.
+                        See :ref:`text-anchors` for valid values.
+
+                         .. versionadded:: 8.0.0
+
+        :param ink: Foreground ink for rendering in RGBA mode.
+
+                         .. versionadded:: 8.0.0
+
+        :param start: Tuple of horizontal and vertical offset, as text may render
+                      differently when starting at fractional coordinates.
+
+                         .. versionadded:: 9.4.0
+
+        :return: A tuple of an internal PIL storage memory instance as defined by the
+                 :py:mod:`PIL.Image.core` interface module, and the text offset, the
+                 gap between the starting coordinate and the first marking
+        """
+        _string_length_check(text)
+        if start is None:
+            start = (0, 0)
+        im = None
+
+        def fill(mode, size):
+            nonlocal im
+
+            im = Image.core.fill(mode, size)
+            return im
+
+        size, offset = self.font.render(
+            text,
+            fill,
+            mode,
+            direction,
+            features,
+            language,
+            stroke_width,
+            anchor,
+            ink,
+            start[0],
+            start[1],
+            Image.MAX_IMAGE_PIXELS,
+        )
+        Image._decompression_bomb_check(size)
+        return im, offset
+
+    def font_variant(
+        self, font=None, size=None, index=None, encoding=None, layout_engine=None
+    ):
+        """
+        Create a copy of this FreeTypeFont object,
+        using any specified arguments to override the settings.
+
+        Parameters are identical to the parameters used to initialize this
+        object.
+
+        :return: A FreeTypeFont object.
+        """
+        if font is None:
+            try:
+                font = BytesIO(self.font_bytes)
+            except AttributeError:
+                font = self.path
+        return FreeTypeFont(
+            font=font,
+            size=self.size if size is None else size,
+            index=self.index if index is None else index,
+            encoding=self.encoding if encoding is None else encoding,
+            layout_engine=layout_engine or self.layout_engine,
+        )
+
+    def get_variation_names(self):
+        """
+        :returns: A list of the named styles in a variation font.
+        :exception OSError: If the font is not a variation font.
+        """
+        try:
+            names = self.font.getvarnames()
+        except AttributeError as e:
+            msg = "FreeType 2.9.1 or greater is required"
+            raise NotImplementedError(msg) from e
+        return [name.replace(b"\x00", b"") for name in names]
+
+    def set_variation_by_name(self, name):
+        """
+        :param name: The name of the style.
+        :exception OSError: If the font is not a variation font.
+        """
+        names = self.get_variation_names()
+        if not isinstance(name, bytes):
+            name = name.encode()
+        index = names.index(name) + 1
+
+        if index == getattr(self, "_last_variation_index", None):
+            # When the same name is set twice in a row,
+            # there is an 'unknown freetype error'
+            # https://savannah.nongnu.org/bugs/?56186
+            return
+        self._last_variation_index = index
+
+        self.font.setvarname(index)
+
+    def get_variation_axes(self):
+        """
+        :returns: A list of the axes in a variation font.
+        :exception OSError: If the font is not a variation font.
+        """
+        try:
+            axes = self.font.getvaraxes()
+        except AttributeError as e:
+            msg = "FreeType 2.9.1 or greater is required"
+            raise NotImplementedError(msg) from e
+        for axis in axes:
+            axis["name"] = axis["name"].replace(b"\x00", b"")
+        return axes
+
+    def set_variation_by_axes(self, axes):
+        """
+        :param axes: A list of values for each axis.
+        :exception OSError: If the font is not a variation font.
+        """
+        try:
+            self.font.setvaraxes(axes)
+        except AttributeError as e:
+            msg = "FreeType 2.9.1 or greater is required"
+            raise NotImplementedError(msg) from e
+
+
+class TransposedFont:
+    """Wrapper for writing rotated or mirrored text"""
+
+    def __init__(self, font, orientation=None):
+        """
+        Wrapper that creates a transposed font from any existing font
+        object.
+
+        :param font: A font object.
+        :param orientation: An optional orientation.  If given, this should
+            be one of Image.Transpose.FLIP_LEFT_RIGHT, Image.Transpose.FLIP_TOP_BOTTOM,
+            Image.Transpose.ROTATE_90, Image.Transpose.ROTATE_180, or
+            Image.Transpose.ROTATE_270.
+        """
+        self.font = font
+        self.orientation = orientation  # any 'transpose' argument, or None
+
+    def getmask(self, text, mode="", *args, **kwargs):
+        im = self.font.getmask(text, mode, *args, **kwargs)
+        if self.orientation is not None:
+            return im.transpose(self.orientation)
+        return im
+
+    def getbbox(self, text, *args, **kwargs):
+        # TransposedFont doesn't support getmask2, move top-left point to (0, 0)
+        # this has no effect on ImageFont and simulates anchor="lt" for FreeTypeFont
+        left, top, right, bottom = self.font.getbbox(text, *args, **kwargs)
+        width = right - left
+        height = bottom - top
+        if self.orientation in (Image.Transpose.ROTATE_90, Image.Transpose.ROTATE_270):
+            return 0, 0, height, width
+        return 0, 0, width, height
+
+    def getlength(self, text, *args, **kwargs):
+        if self.orientation in (Image.Transpose.ROTATE_90, Image.Transpose.ROTATE_270):
+            msg = "text length is undefined for text rotated by 90 or 270 degrees"
+            raise ValueError(msg)
+        _string_length_check(text)
+        return self.font.getlength(text, *args, **kwargs)
+
+
+def load(filename):
+    """
+    Load a font file.  This function loads a font object from the given
+    bitmap font file, and returns the corresponding font object.
+
+    :param filename: Name of font file.
+    :return: A font object.
+    :exception OSError: If the file could not be read.
+    """
+    f = ImageFont()
+    f._load_pilfont(filename)
+    return f
+
+
+def truetype(font=None, size=10, index=0, encoding="", layout_engine=None):
+    """
+    Load a TrueType or OpenType font from a file or file-like object,
+    and create a font object.
+    This function loads a font object from the given file or file-like
+    object, and creates a font object for a font of the given size.
+
+    Pillow uses FreeType to open font files. On Windows, be aware that FreeType
+    will keep the file open as long as the FreeTypeFont object exists. Windows
+    limits the number of files that can be open in C at once to 512, so if many
+    fonts are opened simultaneously and that limit is approached, an
+    ``OSError`` may be thrown, reporting that FreeType "cannot open resource".
+    A workaround would be to copy the file(s) into memory, and open that instead.
+
+    This function requires the _imagingft service.
+
+    :param font: A filename or file-like object containing a TrueType font.
+                 If the file is not found in this filename, the loader may also
+                 search in other directories, such as the :file:`fonts/`
+                 directory on Windows or :file:`/Library/Fonts/`,
+                 :file:`/System/Library/Fonts/` and :file:`~/Library/Fonts/` on
+                 macOS.
+
+    :param size: The requested size, in pixels.
+    :param index: Which font face to load (default is first available face).
+    :param encoding: Which font encoding to use (default is Unicode). Possible
+                     encodings include (see the FreeType documentation for more
+                     information):
+
+                     * "unic" (Unicode)
+                     * "symb" (Microsoft Symbol)
+                     * "ADOB" (Adobe Standard)
+                     * "ADBE" (Adobe Expert)
+                     * "ADBC" (Adobe Custom)
+                     * "armn" (Apple Roman)
+                     * "sjis" (Shift JIS)
+                     * "gb  " (PRC)
+                     * "big5"
+                     * "wans" (Extended Wansung)
+                     * "joha" (Johab)
+                     * "lat1" (Latin-1)
+
+                     This specifies the character set to use. It does not alter the
+                     encoding of any text provided in subsequent operations.
+    :param layout_engine: Which layout engine to use, if available:
+                     :data:`.ImageFont.Layout.BASIC` or :data:`.ImageFont.Layout.RAQM`.
+                     If it is available, Raqm layout will be used by default.
+                     Otherwise, basic layout will be used.
+
+                     Raqm layout is recommended for all non-English text. If Raqm layout
+                     is not required, basic layout will have better performance.
+
+                     You can check support for Raqm layout using
+                     :py:func:`PIL.features.check_feature` with ``feature="raqm"``.
+
+                     .. versionadded:: 4.2.0
+    :return: A font object.
+    :exception OSError: If the file could not be read.
+    """
+
+    def freetype(font):
+        return FreeTypeFont(font, size, index, encoding, layout_engine)
+
+    try:
+        return freetype(font)
+    except OSError:
+        if not is_path(font):
+            raise
+        ttf_filename = os.path.basename(font)
+
+        dirs = []
+        if sys.platform == "win32":
+            # check the windows font repository
+            # NOTE: must use uppercase WINDIR, to work around bugs in
+            # 1.5.2's os.environ.get()
+            windir = os.environ.get("WINDIR")
+            if windir:
+                dirs.append(os.path.join(windir, "fonts"))
+        elif sys.platform in ("linux", "linux2"):
+            lindirs = os.environ.get("XDG_DATA_DIRS")
+            if not lindirs:
+                # According to the freedesktop spec, XDG_DATA_DIRS should
+                # default to /usr/share
+                lindirs = "/usr/share"
+            dirs += [os.path.join(lindir, "fonts") for lindir in lindirs.split(":")]
+        elif sys.platform == "darwin":
+            dirs += [
+                "/Library/Fonts",
+                "/System/Library/Fonts",
+                os.path.expanduser("~/Library/Fonts"),
+            ]
+
+        ext = os.path.splitext(ttf_filename)[1]
+        first_font_with_a_different_extension = None
+        for directory in dirs:
+            for walkroot, walkdir, walkfilenames in os.walk(directory):
+                for walkfilename in walkfilenames:
+                    if ext and walkfilename == ttf_filename:
+                        return freetype(os.path.join(walkroot, walkfilename))
+                    elif not ext and os.path.splitext(walkfilename)[0] == ttf_filename:
+                        fontpath = os.path.join(walkroot, walkfilename)
+                        if os.path.splitext(fontpath)[1] == ".ttf":
+                            return freetype(fontpath)
+                        if not ext and first_font_with_a_different_extension is None:
+                            first_font_with_a_different_extension = fontpath
+        if first_font_with_a_different_extension:
+            return freetype(first_font_with_a_different_extension)
+        raise
+
+
+def load_path(filename):
+    """
+    Load font file. Same as :py:func:`~PIL.ImageFont.load`, but searches for a
+    bitmap font along the Python path.
+
+    :param filename: Name of font file.
+    :return: A font object.
+    :exception OSError: If the file could not be read.
+    """
+    for directory in sys.path:
+        if is_directory(directory):
+            if not isinstance(filename, str):
+                filename = filename.decode("utf-8")
+            try:
+                return load(os.path.join(directory, filename))
+            except OSError:
+                pass
+    msg = "cannot find font file"
+    raise OSError(msg)
+
+
+def load_default():
+    """Load a "better than nothing" default font.
+
+    .. versionadded:: 1.1.4
+
+    :return: A font object.
+    """
+    f = ImageFont()
+    f._load_pilfont_data(
+        # courB08
+        BytesIO(
+            base64.b64decode(
+                b"""
+UElMZm9udAo7Ozs7OzsxMDsKREFUQQoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAYAAAAA//8AAQAAAAAAAAABAAEA
+BgAAAAH/+gADAAAAAQAAAAMABgAGAAAAAf/6AAT//QADAAAABgADAAYAAAAA//kABQABAAYAAAAL
+AAgABgAAAAD/+AAFAAEACwAAABAACQAGAAAAAP/5AAUAAAAQAAAAFQAHAAYAAP////oABQAAABUA
+AAAbAAYABgAAAAH/+QAE//wAGwAAAB4AAwAGAAAAAf/5AAQAAQAeAAAAIQAIAAYAAAAB//kABAAB
+ACEAAAAkAAgABgAAAAD/+QAE//0AJAAAACgABAAGAAAAAP/6AAX//wAoAAAALQAFAAYAAAAB//8A
+BAACAC0AAAAwAAMABgAAAAD//AAF//0AMAAAADUAAQAGAAAAAf//AAMAAAA1AAAANwABAAYAAAAB
+//kABQABADcAAAA7AAgABgAAAAD/+QAFAAAAOwAAAEAABwAGAAAAAP/5AAYAAABAAAAARgAHAAYA
+AAAA//kABQAAAEYAAABLAAcABgAAAAD/+QAFAAAASwAAAFAABwAGAAAAAP/5AAYAAABQAAAAVgAH
+AAYAAAAA//kABQAAAFYAAABbAAcABgAAAAD/+QAFAAAAWwAAAGAABwAGAAAAAP/5AAUAAABgAAAA
+ZQAHAAYAAAAA//kABQAAAGUAAABqAAcABgAAAAD/+QAFAAAAagAAAG8ABwAGAAAAAf/8AAMAAABv
+AAAAcQAEAAYAAAAA//wAAwACAHEAAAB0AAYABgAAAAD/+gAE//8AdAAAAHgABQAGAAAAAP/7AAT/
+/gB4AAAAfAADAAYAAAAB//oABf//AHwAAACAAAUABgAAAAD/+gAFAAAAgAAAAIUABgAGAAAAAP/5
+AAYAAQCFAAAAiwAIAAYAAP////oABgAAAIsAAACSAAYABgAA////+gAFAAAAkgAAAJgABgAGAAAA
+AP/6AAUAAACYAAAAnQAGAAYAAP////oABQAAAJ0AAACjAAYABgAA////+gAFAAAAowAAAKkABgAG
+AAD////6AAUAAACpAAAArwAGAAYAAAAA//oABQAAAK8AAAC0AAYABgAA////+gAGAAAAtAAAALsA
+BgAGAAAAAP/6AAQAAAC7AAAAvwAGAAYAAP////oABQAAAL8AAADFAAYABgAA////+gAGAAAAxQAA
+AMwABgAGAAD////6AAUAAADMAAAA0gAGAAYAAP////oABQAAANIAAADYAAYABgAA////+gAGAAAA
+2AAAAN8ABgAGAAAAAP/6AAUAAADfAAAA5AAGAAYAAP////oABQAAAOQAAADqAAYABgAAAAD/+gAF
+AAEA6gAAAO8ABwAGAAD////6AAYAAADvAAAA9gAGAAYAAAAA//oABQAAAPYAAAD7AAYABgAA////
++gAFAAAA+wAAAQEABgAGAAD////6AAYAAAEBAAABCAAGAAYAAP////oABgAAAQgAAAEPAAYABgAA
+////+gAGAAABDwAAARYABgAGAAAAAP/6AAYAAAEWAAABHAAGAAYAAP////oABgAAARwAAAEjAAYA
+BgAAAAD/+gAFAAABIwAAASgABgAGAAAAAf/5AAQAAQEoAAABKwAIAAYAAAAA//kABAABASsAAAEv
+AAgABgAAAAH/+QAEAAEBLwAAATIACAAGAAAAAP/5AAX//AEyAAABNwADAAYAAAAAAAEABgACATcA
+AAE9AAEABgAAAAH/+QAE//wBPQAAAUAAAwAGAAAAAP/7AAYAAAFAAAABRgAFAAYAAP////kABQAA
+AUYAAAFMAAcABgAAAAD/+wAFAAABTAAAAVEABQAGAAAAAP/5AAYAAAFRAAABVwAHAAYAAAAA//sA
+BQAAAVcAAAFcAAUABgAAAAD/+QAFAAABXAAAAWEABwAGAAAAAP/7AAYAAgFhAAABZwAHAAYAAP//
+//kABQAAAWcAAAFtAAcABgAAAAD/+QAGAAABbQAAAXMABwAGAAAAAP/5AAQAAgFzAAABdwAJAAYA
+AP////kABgAAAXcAAAF+AAcABgAAAAD/+QAGAAABfgAAAYQABwAGAAD////7AAUAAAGEAAABigAF
+AAYAAP////sABQAAAYoAAAGQAAUABgAAAAD/+wAFAAABkAAAAZUABQAGAAD////7AAUAAgGVAAAB
+mwAHAAYAAAAA//sABgACAZsAAAGhAAcABgAAAAD/+wAGAAABoQAAAacABQAGAAAAAP/7AAYAAAGn
+AAABrQAFAAYAAAAA//kABgAAAa0AAAGzAAcABgAA////+wAGAAABswAAAboABQAGAAD////7AAUA
+AAG6AAABwAAFAAYAAP////sABgAAAcAAAAHHAAUABgAAAAD/+wAGAAABxwAAAc0ABQAGAAD////7
+AAYAAgHNAAAB1AAHAAYAAAAA//sABQAAAdQAAAHZAAUABgAAAAH/+QAFAAEB2QAAAd0ACAAGAAAA
+Av/6AAMAAQHdAAAB3gAHAAYAAAAA//kABAABAd4AAAHiAAgABgAAAAD/+wAF//0B4gAAAecAAgAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAYAAAAB
+//sAAwACAecAAAHpAAcABgAAAAD/+QAFAAEB6QAAAe4ACAAGAAAAAP/5AAYAAAHuAAAB9AAHAAYA
+AAAA//oABf//AfQAAAH5AAUABgAAAAD/+QAGAAAB+QAAAf8ABwAGAAAAAv/5AAMAAgH/AAACAAAJ
+AAYAAAAA//kABQABAgAAAAIFAAgABgAAAAH/+gAE//sCBQAAAggAAQAGAAAAAP/5AAYAAAIIAAAC
+DgAHAAYAAAAB//kABf/+Ag4AAAISAAUABgAA////+wAGAAACEgAAAhkABQAGAAAAAP/7AAX//gIZ
+AAACHgADAAYAAAAA//wABf/9Ah4AAAIjAAEABgAAAAD/+QAHAAACIwAAAioABwAGAAAAAP/6AAT/
++wIqAAACLgABAAYAAAAA//kABP/8Ai4AAAIyAAMABgAAAAD/+gAFAAACMgAAAjcABgAGAAAAAf/5
+AAT//QI3AAACOgAEAAYAAAAB//kABP/9AjoAAAI9AAQABgAAAAL/+QAE//sCPQAAAj8AAgAGAAD/
+///7AAYAAgI/AAACRgAHAAYAAAAA//kABgABAkYAAAJMAAgABgAAAAH//AAD//0CTAAAAk4AAQAG
+AAAAAf//AAQAAgJOAAACUQADAAYAAAAB//kABP/9AlEAAAJUAAQABgAAAAH/+QAF//4CVAAAAlgA
+BQAGAAD////7AAYAAAJYAAACXwAFAAYAAP////kABgAAAl8AAAJmAAcABgAA////+QAGAAACZgAA
+Am0ABwAGAAD////5AAYAAAJtAAACdAAHAAYAAAAA//sABQACAnQAAAJ5AAcABgAA////9wAGAAAC
+eQAAAoAACQAGAAD////3AAYAAAKAAAAChwAJAAYAAP////cABgAAAocAAAKOAAkABgAA////9wAG
+AAACjgAAApUACQAGAAD////4AAYAAAKVAAACnAAIAAYAAP////cABgAAApwAAAKjAAkABgAA////
++gAGAAACowAAAqoABgAGAAAAAP/6AAUAAgKqAAACrwAIAAYAAP////cABQAAAq8AAAK1AAkABgAA
+////9wAFAAACtQAAArsACQAGAAD////3AAUAAAK7AAACwQAJAAYAAP////gABQAAAsEAAALHAAgA
+BgAAAAD/9wAEAAACxwAAAssACQAGAAAAAP/3AAQAAALLAAACzwAJAAYAAAAA//cABAAAAs8AAALT
+AAkABgAAAAD/+AAEAAAC0wAAAtcACAAGAAD////6AAUAAALXAAAC3QAGAAYAAP////cABgAAAt0A
+AALkAAkABgAAAAD/9wAFAAAC5AAAAukACQAGAAAAAP/3AAUAAALpAAAC7gAJAAYAAAAA//cABQAA
+Au4AAALzAAkABgAAAAD/9wAFAAAC8wAAAvgACQAGAAAAAP/4AAUAAAL4AAAC/QAIAAYAAAAA//oA
+Bf//Av0AAAMCAAUABgAA////+gAGAAADAgAAAwkABgAGAAD////3AAYAAAMJAAADEAAJAAYAAP//
+//cABgAAAxAAAAMXAAkABgAA////9wAGAAADFwAAAx4ACQAGAAD////4AAYAAAAAAAoABwASAAYA
+AP////cABgAAAAcACgAOABMABgAA////+gAFAAAADgAKABQAEAAGAAD////6AAYAAAAUAAoAGwAQ
+AAYAAAAA//gABgAAABsACgAhABIABgAAAAD/+AAGAAAAIQAKACcAEgAGAAAAAP/4AAYAAAAnAAoA
+LQASAAYAAAAA//gABgAAAC0ACgAzABIABgAAAAD/+QAGAAAAMwAKADkAEQAGAAAAAP/3AAYAAAA5
+AAoAPwATAAYAAP////sABQAAAD8ACgBFAA8ABgAAAAD/+wAFAAIARQAKAEoAEQAGAAAAAP/4AAUA
+AABKAAoATwASAAYAAAAA//gABQAAAE8ACgBUABIABgAAAAD/+AAFAAAAVAAKAFkAEgAGAAAAAP/5
+AAUAAABZAAoAXgARAAYAAAAA//gABgAAAF4ACgBkABIABgAAAAD/+AAGAAAAZAAKAGoAEgAGAAAA
+AP/4AAYAAABqAAoAcAASAAYAAAAA//kABgAAAHAACgB2ABEABgAAAAD/+AAFAAAAdgAKAHsAEgAG
+AAD////4AAYAAAB7AAoAggASAAYAAAAA//gABQAAAIIACgCHABIABgAAAAD/+AAFAAAAhwAKAIwA
+EgAGAAAAAP/4AAUAAACMAAoAkQASAAYAAAAA//gABQAAAJEACgCWABIABgAAAAD/+QAFAAAAlgAK
+AJsAEQAGAAAAAP/6AAX//wCbAAoAoAAPAAYAAAAA//oABQABAKAACgClABEABgAA////+AAGAAAA
+pQAKAKwAEgAGAAD////4AAYAAACsAAoAswASAAYAAP////gABgAAALMACgC6ABIABgAA////+QAG
+AAAAugAKAMEAEQAGAAD////4AAYAAgDBAAoAyAAUAAYAAP////kABQACAMgACgDOABMABgAA////
++QAGAAIAzgAKANUAEw==
+"""
+            )
+        ),
+        Image.open(
+            BytesIO(
+                base64.b64decode(
+                    b"""
+iVBORw0KGgoAAAANSUhEUgAAAx4AAAAUAQAAAAArMtZoAAAEwElEQVR4nABlAJr/AHVE4czCI/4u
+Mc4b7vuds/xzjz5/3/7u/n9vMe7vnfH/9++vPn/xyf5zhxzjt8GHw8+2d83u8x27199/nxuQ6Od9
+M43/5z2I+9n9ZtmDBwMQECDRQw/eQIQohJXxpBCNVE6QCCAAAAD//wBlAJr/AgALyj1t/wINwq0g
+LeNZUworuN1cjTPIzrTX6ofHWeo3v336qPzfEwRmBnHTtf95/fglZK5N0PDgfRTslpGBvz7LFc4F
+IUXBWQGjQ5MGCx34EDFPwXiY4YbYxavpnhHFrk14CDAAAAD//wBlAJr/AgKqRooH2gAgPeggvUAA
+Bu2WfgPoAwzRAABAAAAAAACQgLz/3Uv4Gv+gX7BJgDeeGP6AAAD1NMDzKHD7ANWr3loYbxsAD791
+NAADfcoIDyP44K/jv4Y63/Z+t98Ovt+ub4T48LAAAAD//wBlAJr/AuplMlADJAAAAGuAphWpqhMx
+in0A/fRvAYBABPgBwBUgABBQ/sYAyv9g0bCHgOLoGAAAAAAAREAAwI7nr0ArYpow7aX8//9LaP/9
+SjdavWA8ePHeBIKB//81/83ndznOaXx379wAAAD//wBlAJr/AqDxW+D3AABAAbUh/QMnbQag/gAY
+AYDAAACgtgD/gOqAAAB5IA/8AAAk+n9w0AAA8AAAmFRJuPo27ciC0cD5oeW4E7KA/wD3ECMAn2tt
+y8PgwH8AfAxFzC0JzeAMtratAsC/ffwAAAD//wBlAJr/BGKAyCAA4AAAAvgeYTAwHd1kmQF5chkG
+ABoMIHcL5xVpTfQbUqzlAAAErwAQBgAAEOClA5D9il08AEh/tUzdCBsXkbgACED+woQg8Si9VeqY
+lODCn7lmF6NhnAEYgAAA/NMIAAAAAAD//2JgjLZgVGBg5Pv/Tvpc8hwGBjYGJADjHDrAwPzAjv/H
+/Wf3PzCwtzcwHmBgYGcwbZz8wHaCAQMDOwMDQ8MCBgYOC3W7mp+f0w+wHOYxO3OG+e376hsMZjk3
+AAAAAP//YmCMY2A4wMAIN5e5gQETPD6AZisDAwMDgzSDAAPjByiHcQMDAwMDg1nOze1lByRu5/47
+c4859311AYNZzg0AAAAA//9iYGDBYihOIIMuwIjGL39/fwffA8b//xv/P2BPtzzHwCBjUQAAAAD/
+/yLFBrIBAAAA//9i1HhcwdhizX7u8NZNzyLbvT97bfrMf/QHI8evOwcSqGUJAAAA//9iYBB81iSw
+pEE170Qrg5MIYydHqwdDQRMrAwcVrQAAAAD//2J4x7j9AAMDn8Q/BgYLBoaiAwwMjPdvMDBYM1Tv
+oJodAAAAAP//Yqo/83+dxePWlxl3npsel9lvLfPcqlE9725C+acfVLMEAAAA//9i+s9gwCoaaGMR
+evta/58PTEWzr21hufPjA8N+qlnBwAAAAAD//2JiWLci5v1+HmFXDqcnULE/MxgYGBj+f6CaJQAA
+AAD//2Ji2FrkY3iYpYC5qDeGgeEMAwPDvwQBBoYvcTwOVLMEAAAA//9isDBgkP///0EOg9z35v//
+Gc/eeW7BwPj5+QGZhANUswMAAAD//2JgqGBgYGBgqEMXlvhMPUsAAAAA//8iYDd1AAAAAP//AwDR
+w7IkEbzhVQAAAABJRU5ErkJggg==
+"""
+                )
+            )
+        ),
+    )
+    return f

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageGrab.py

@@ -0,0 +1,169 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# screen grabber
+#
+# History:
+# 2001-04-26 fl  created
+# 2001-09-17 fl  use builtin driver, if present
+# 2002-11-19 fl  added grabclipboard support
+#
+# Copyright (c) 2001-2002 by Secret Labs AB
+# Copyright (c) 2001-2002 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import io
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+
+from . import Image
+
+
+def grab(bbox=None, include_layered_windows=False, all_screens=False, xdisplay=None):
+    if xdisplay is None:
+        if sys.platform == "darwin":
+            fh, filepath = tempfile.mkstemp(".png")
+            os.close(fh)
+            args = ["screencapture"]
+            if bbox:
+                left, top, right, bottom = bbox
+                args += ["-R", f"{left},{top},{right-left},{bottom-top}"]
+            subprocess.call(args + ["-x", filepath])
+            im = Image.open(filepath)
+            im.load()
+            os.unlink(filepath)
+            if bbox:
+                im_resized = im.resize((right - left, bottom - top))
+                im.close()
+                return im_resized
+            return im
+        elif sys.platform == "win32":
+            offset, size, data = Image.core.grabscreen_win32(
+                include_layered_windows, all_screens
+            )
+            im = Image.frombytes(
+                "RGB",
+                size,
+                data,
+                # RGB, 32-bit line padding, origin lower left corner
+                "raw",
+                "BGR",
+                (size[0] * 3 + 3) & -4,
+                -1,
+            )
+            if bbox:
+                x0, y0 = offset
+                left, top, right, bottom = bbox
+                im = im.crop((left - x0, top - y0, right - x0, bottom - y0))
+            return im
+    try:
+        if not Image.core.HAVE_XCB:
+            msg = "Pillow was built without XCB support"
+            raise OSError(msg)
+        size, data = Image.core.grabscreen_x11(xdisplay)
+    except OSError:
+        if (
+            xdisplay is None
+            and sys.platform not in ("darwin", "win32")
+            and shutil.which("gnome-screenshot")
+        ):
+            fh, filepath = tempfile.mkstemp(".png")
+            os.close(fh)
+            subprocess.call(["gnome-screenshot", "-f", filepath])
+            im = Image.open(filepath)
+            im.load()
+            os.unlink(filepath)
+            if bbox:
+                im_cropped = im.crop(bbox)
+                im.close()
+                return im_cropped
+            return im
+        else:
+            raise
+    else:
+        im = Image.frombytes("RGB", size, data, "raw", "BGRX", size[0] * 4, 1)
+        if bbox:
+            im = im.crop(bbox)
+        return im
+
+
+def grabclipboard():
+    if sys.platform == "darwin":
+        fh, filepath = tempfile.mkstemp(".png")
+        os.close(fh)
+        commands = [
+            'set theFile to (open for access POSIX file "'
+            + filepath
+            + '" with write permission)',
+            "try",
+            "    write (the clipboard as «class PNGf») to theFile",
+            "end try",
+            "close access theFile",
+        ]
+        script = ["osascript"]
+        for command in commands:
+            script += ["-e", command]
+        subprocess.call(script)
+
+        im = None
+        if os.stat(filepath).st_size != 0:
+            im = Image.open(filepath)
+            im.load()
+        os.unlink(filepath)
+        return im
+    elif sys.platform == "win32":
+        fmt, data = Image.core.grabclipboard_win32()
+        if fmt == "file":  # CF_HDROP
+            import struct
+
+            o = struct.unpack_from("I", data)[0]
+            if data[16] != 0:
+                files = data[o:].decode("utf-16le").split("\0")
+            else:
+                files = data[o:].decode("mbcs").split("\0")
+            return files[: files.index("")]
+        if isinstance(data, bytes):
+            data = io.BytesIO(data)
+            if fmt == "png":
+                from . import PngImagePlugin
+
+                return PngImagePlugin.PngImageFile(data)
+            elif fmt == "DIB":
+                from . import BmpImagePlugin
+
+                return BmpImagePlugin.DibImageFile(data)
+        return None
+    else:
+        if shutil.which("wl-paste"):
+            output = subprocess.check_output(["wl-paste", "-l"]).decode()
+            mimetypes = output.splitlines()
+            if "image/png" in mimetypes:
+                mimetype = "image/png"
+            elif mimetypes:
+                mimetype = mimetypes[0]
+            else:
+                mimetype = None
+
+            args = ["wl-paste"]
+            if mimetype:
+                args.extend(["-t", mimetype])
+        elif shutil.which("xclip"):
+            args = ["xclip", "-selection", "clipboard", "-t", "image/png", "-o"]
+        else:
+            msg = "wl-paste or xclip is required for ImageGrab.grabclipboard() on Linux"
+            raise NotImplementedError(msg)
+        p = subprocess.run(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        err = p.stderr
+        if err:
+            msg = f"{args[0]} error: {err.strip().decode()}"
+            raise ChildProcessError(msg)
+        data = io.BytesIO(p.stdout)
+        im = Image.open(data)
+        im.load()
+        return im

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageMath.py

@@ -0,0 +1,263 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# a simple math add-on for the Python Imaging Library
+#
+# History:
+# 1999-02-15 fl   Original PIL Plus release
+# 2005-05-05 fl   Simplified and cleaned up for PIL 1.1.6
+# 2005-09-12 fl   Fixed int() and float() for Python 2.4.1
+#
+# Copyright (c) 1999-2005 by Secret Labs AB
+# Copyright (c) 2005 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import builtins
+
+from . import Image, _imagingmath
+
+
+def _isconstant(v):
+    return isinstance(v, (int, float))
+
+
+class _Operand:
+    """Wraps an image operand, providing standard operators"""
+
+    def __init__(self, im):
+        self.im = im
+
+    def __fixup(self, im1):
+        # convert image to suitable mode
+        if isinstance(im1, _Operand):
+            # argument was an image.
+            if im1.im.mode in ("1", "L"):
+                return im1.im.convert("I")
+            elif im1.im.mode in ("I", "F"):
+                return im1.im
+            else:
+                msg = f"unsupported mode: {im1.im.mode}"
+                raise ValueError(msg)
+        else:
+            # argument was a constant
+            if _isconstant(im1) and self.im.mode in ("1", "L", "I"):
+                return Image.new("I", self.im.size, im1)
+            else:
+                return Image.new("F", self.im.size, im1)
+
+    def apply(self, op, im1, im2=None, mode=None):
+        im1 = self.__fixup(im1)
+        if im2 is None:
+            # unary operation
+            out = Image.new(mode or im1.mode, im1.size, None)
+            im1.load()
+            try:
+                op = getattr(_imagingmath, op + "_" + im1.mode)
+            except AttributeError as e:
+                msg = f"bad operand type for '{op}'"
+                raise TypeError(msg) from e
+            _imagingmath.unop(op, out.im.id, im1.im.id)
+        else:
+            # binary operation
+            im2 = self.__fixup(im2)
+            if im1.mode != im2.mode:
+                # convert both arguments to floating point
+                if im1.mode != "F":
+                    im1 = im1.convert("F")
+                if im2.mode != "F":
+                    im2 = im2.convert("F")
+            if im1.size != im2.size:
+                # crop both arguments to a common size
+                size = (min(im1.size[0], im2.size[0]), min(im1.size[1], im2.size[1]))
+                if im1.size != size:
+                    im1 = im1.crop((0, 0) + size)
+                if im2.size != size:
+                    im2 = im2.crop((0, 0) + size)
+            out = Image.new(mode or im1.mode, im1.size, None)
+            im1.load()
+            im2.load()
+            try:
+                op = getattr(_imagingmath, op + "_" + im1.mode)
+            except AttributeError as e:
+                msg = f"bad operand type for '{op}'"
+                raise TypeError(msg) from e
+            _imagingmath.binop(op, out.im.id, im1.im.id, im2.im.id)
+        return _Operand(out)
+
+    # unary operators
+    def __bool__(self):
+        # an image is "true" if it contains at least one non-zero pixel
+        return self.im.getbbox() is not None
+
+    def __abs__(self):
+        return self.apply("abs", self)
+
+    def __pos__(self):
+        return self
+
+    def __neg__(self):
+        return self.apply("neg", self)
+
+    # binary operators
+    def __add__(self, other):
+        return self.apply("add", self, other)
+
+    def __radd__(self, other):
+        return self.apply("add", other, self)
+
+    def __sub__(self, other):
+        return self.apply("sub", self, other)
+
+    def __rsub__(self, other):
+        return self.apply("sub", other, self)
+
+    def __mul__(self, other):
+        return self.apply("mul", self, other)
+
+    def __rmul__(self, other):
+        return self.apply("mul", other, self)
+
+    def __truediv__(self, other):
+        return self.apply("div", self, other)
+
+    def __rtruediv__(self, other):
+        return self.apply("div", other, self)
+
+    def __mod__(self, other):
+        return self.apply("mod", self, other)
+
+    def __rmod__(self, other):
+        return self.apply("mod", other, self)
+
+    def __pow__(self, other):
+        return self.apply("pow", self, other)
+
+    def __rpow__(self, other):
+        return self.apply("pow", other, self)
+
+    # bitwise
+    def __invert__(self):
+        return self.apply("invert", self)
+
+    def __and__(self, other):
+        return self.apply("and", self, other)
+
+    def __rand__(self, other):
+        return self.apply("and", other, self)
+
+    def __or__(self, other):
+        return self.apply("or", self, other)
+
+    def __ror__(self, other):
+        return self.apply("or", other, self)
+
+    def __xor__(self, other):
+        return self.apply("xor", self, other)
+
+    def __rxor__(self, other):
+        return self.apply("xor", other, self)
+
+    def __lshift__(self, other):
+        return self.apply("lshift", self, other)
+
+    def __rshift__(self, other):
+        return self.apply("rshift", self, other)
+
+    # logical
+    def __eq__(self, other):
+        return self.apply("eq", self, other)
+
+    def __ne__(self, other):
+        return self.apply("ne", self, other)
+
+    def __lt__(self, other):
+        return self.apply("lt", self, other)
+
+    def __le__(self, other):
+        return self.apply("le", self, other)
+
+    def __gt__(self, other):
+        return self.apply("gt", self, other)
+
+    def __ge__(self, other):
+        return self.apply("ge", self, other)
+
+
+# conversions
+def imagemath_int(self):
+    return _Operand(self.im.convert("I"))
+
+
+def imagemath_float(self):
+    return _Operand(self.im.convert("F"))
+
+
+# logical
+def imagemath_equal(self, other):
+    return self.apply("eq", self, other, mode="I")
+
+
+def imagemath_notequal(self, other):
+    return self.apply("ne", self, other, mode="I")
+
+
+def imagemath_min(self, other):
+    return self.apply("min", self, other)
+
+
+def imagemath_max(self, other):
+    return self.apply("max", self, other)
+
+
+def imagemath_convert(self, mode):
+    return _Operand(self.im.convert(mode))
+
+
+ops = {}
+for k, v in list(globals().items()):
+    if k[:10] == "imagemath_":
+        ops[k[10:]] = v
+
+
+def eval(expression, _dict={}, **kw):
+    """
+    Evaluates an image expression.
+
+    :param expression: A string containing a Python-style expression.
+    :param options: Values to add to the evaluation context.  You
+                    can either use a dictionary, or one or more keyword
+                    arguments.
+    :return: The evaluated expression. This is usually an image object, but can
+             also be an integer, a floating point value, or a pixel tuple,
+             depending on the expression.
+    """
+
+    # build execution namespace
+    args = ops.copy()
+    args.update(_dict)
+    args.update(kw)
+    for k, v in list(args.items()):
+        if hasattr(v, "im"):
+            args[k] = _Operand(v)
+
+    compiled_code = compile(expression, "<string>", "eval")
+
+    def scan(code):
+        for const in code.co_consts:
+            if type(const) == type(compiled_code):
+                scan(const)
+
+        for name in code.co_names:
+            if name not in args and name != "abs":
+                msg = f"'{name}' not allowed"
+                raise ValueError(msg)
+
+    scan(compiled_code)
+    out = builtins.eval(expression, {"__builtins": {"abs": abs}}, args)
+    try:
+        return out.im
+    except AttributeError:
+        return out

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageMode.py

@@ -0,0 +1,90 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# standard mode descriptors
+#
+# History:
+# 2006-03-20 fl   Added
+#
+# Copyright (c) 2006 by Secret Labs AB.
+# Copyright (c) 2006 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+import sys
+
+# mode descriptor cache
+_modes = None
+
+
+class ModeDescriptor:
+    """Wrapper for mode strings."""
+
+    def __init__(self, mode, bands, basemode, basetype, typestr):
+        self.mode = mode
+        self.bands = bands
+        self.basemode = basemode
+        self.basetype = basetype
+        self.typestr = typestr
+
+    def __str__(self):
+        return self.mode
+
+
+def getmode(mode):
+    """Gets a mode descriptor for the given mode."""
+    global _modes
+    if not _modes:
+        # initialize mode cache
+        modes = {}
+        endian = "<" if sys.byteorder == "little" else ">"
+        for m, (basemode, basetype, bands, typestr) in {
+            # core modes
+            # Bits need to be extended to bytes
+            "1": ("L", "L", ("1",), "|b1"),
+            "L": ("L", "L", ("L",), "|u1"),
+            "I": ("L", "I", ("I",), endian + "i4"),
+            "F": ("L", "F", ("F",), endian + "f4"),
+            "P": ("P", "L", ("P",), "|u1"),
+            "RGB": ("RGB", "L", ("R", "G", "B"), "|u1"),
+            "RGBX": ("RGB", "L", ("R", "G", "B", "X"), "|u1"),
+            "RGBA": ("RGB", "L", ("R", "G", "B", "A"), "|u1"),
+            "CMYK": ("RGB", "L", ("C", "M", "Y", "K"), "|u1"),
+            "YCbCr": ("RGB", "L", ("Y", "Cb", "Cr"), "|u1"),
+            # UNDONE - unsigned |u1i1i1
+            "LAB": ("RGB", "L", ("L", "A", "B"), "|u1"),
+            "HSV": ("RGB", "L", ("H", "S", "V"), "|u1"),
+            # extra experimental modes
+            "RGBa": ("RGB", "L", ("R", "G", "B", "a"), "|u1"),
+            "BGR;15": ("RGB", "L", ("B", "G", "R"), "|u1"),
+            "BGR;16": ("RGB", "L", ("B", "G", "R"), "|u1"),
+            "BGR;24": ("RGB", "L", ("B", "G", "R"), "|u1"),
+            "LA": ("L", "L", ("L", "A"), "|u1"),
+            "La": ("L", "L", ("L", "a"), "|u1"),
+            "PA": ("RGB", "L", ("P", "A"), "|u1"),
+        }.items():
+            modes[m] = ModeDescriptor(m, bands, basemode, basetype, typestr)
+        # mapping modes
+        for i16mode, typestr in {
+            # I;16 == I;16L, and I;32 == I;32L
+            "I;16": "<u2",
+            "I;16S": "<i2",
+            "I;16L": "<u2",
+            "I;16LS": "<i2",
+            "I;16B": ">u2",
+            "I;16BS": ">i2",
+            "I;16N": endian + "u2",
+            "I;16NS": endian + "i2",
+            "I;32": "<u4",
+            "I;32B": ">u4",
+            "I;32L": "<u4",
+            "I;32S": "<i4",
+            "I;32BS": ">i4",
+            "I;32LS": "<i4",
+        }.items():
+            modes[i16mode] = ModeDescriptor(i16mode, ("I",), "L", "L", typestr)
+        # set global mode cache atomically
+        _modes = modes
+    return _modes[mode]

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageMorph.py

@@ -0,0 +1,254 @@
+# A binary morphology add-on for the Python Imaging Library
+#
+# History:
+#   2014-06-04 Initial version.
+#
+# Copyright (c) 2014 Dov Grobgeld <dov.grobgeld@gmail.com>
+
+import re
+
+from . import Image, _imagingmorph
+
+LUT_SIZE = 1 << 9
+
+# fmt: off
+ROTATION_MATRIX = [
+    6, 3, 0,
+    7, 4, 1,
+    8, 5, 2,
+]
+MIRROR_MATRIX = [
+    2, 1, 0,
+    5, 4, 3,
+    8, 7, 6,
+]
+# fmt: on
+
+
+class LutBuilder:
+    """A class for building a MorphLut from a descriptive language
+
+    The input patterns is a list of a strings sequences like these::
+
+        4:(...
+           .1.
+           111)->1
+
+    (whitespaces including linebreaks are ignored). The option 4
+    describes a series of symmetry operations (in this case a
+    4-rotation), the pattern is described by:
+
+    - . or X - Ignore
+    - 1 - Pixel is on
+    - 0 - Pixel is off
+
+    The result of the operation is described after "->" string.
+
+    The default is to return the current pixel value, which is
+    returned if no other match is found.
+
+    Operations:
+
+    - 4 - 4 way rotation
+    - N - Negate
+    - 1 - Dummy op for no other operation (an op must always be given)
+    - M - Mirroring
+
+    Example::
+
+        lb = LutBuilder(patterns = ["4:(... .1. 111)->1"])
+        lut = lb.build_lut()
+
+    """
+
+    def __init__(self, patterns=None, op_name=None):
+        if patterns is not None:
+            self.patterns = patterns
+        else:
+            self.patterns = []
+        self.lut = None
+        if op_name is not None:
+            known_patterns = {
+                "corner": ["1:(... ... ...)->0", "4:(00. 01. ...)->1"],
+                "dilation4": ["4:(... .0. .1.)->1"],
+                "dilation8": ["4:(... .0. .1.)->1", "4:(... .0. ..1)->1"],
+                "erosion4": ["4:(... .1. .0.)->0"],
+                "erosion8": ["4:(... .1. .0.)->0", "4:(... .1. ..0)->0"],
+                "edge": [
+                    "1:(... ... ...)->0",
+                    "4:(.0. .1. ...)->1",
+                    "4:(01. .1. ...)->1",
+                ],
+            }
+            if op_name not in known_patterns:
+                msg = "Unknown pattern " + op_name + "!"
+                raise Exception(msg)
+
+            self.patterns = known_patterns[op_name]
+
+    def add_patterns(self, patterns):
+        self.patterns += patterns
+
+    def build_default_lut(self):
+        symbols = [0, 1]
+        m = 1 << 4  # pos of current pixel
+        self.lut = bytearray(symbols[(i & m) > 0] for i in range(LUT_SIZE))
+
+    def get_lut(self):
+        return self.lut
+
+    def _string_permute(self, pattern, permutation):
+        """string_permute takes a pattern and a permutation and returns the
+        string permuted according to the permutation list.
+        """
+        assert len(permutation) == 9
+        return "".join(pattern[p] for p in permutation)
+
+    def _pattern_permute(self, basic_pattern, options, basic_result):
+        """pattern_permute takes a basic pattern and its result and clones
+        the pattern according to the modifications described in the $options
+        parameter. It returns a list of all cloned patterns."""
+        patterns = [(basic_pattern, basic_result)]
+
+        # rotations
+        if "4" in options:
+            res = patterns[-1][1]
+            for i in range(4):
+                patterns.append(
+                    (self._string_permute(patterns[-1][0], ROTATION_MATRIX), res)
+                )
+        # mirror
+        if "M" in options:
+            n = len(patterns)
+            for pattern, res in patterns[:n]:
+                patterns.append((self._string_permute(pattern, MIRROR_MATRIX), res))
+
+        # negate
+        if "N" in options:
+            n = len(patterns)
+            for pattern, res in patterns[:n]:
+                # Swap 0 and 1
+                pattern = pattern.replace("0", "Z").replace("1", "0").replace("Z", "1")
+                res = 1 - int(res)
+                patterns.append((pattern, res))
+
+        return patterns
+
+    def build_lut(self):
+        """Compile all patterns into a morphology lut.
+
+        TBD :Build based on (file) morphlut:modify_lut
+        """
+        self.build_default_lut()
+        patterns = []
+
+        # Parse and create symmetries of the patterns strings
+        for p in self.patterns:
+            m = re.search(r"(\w*):?\s*\((.+?)\)\s*->\s*(\d)", p.replace("\n", ""))
+            if not m:
+                msg = 'Syntax error in pattern "' + p + '"'
+                raise Exception(msg)
+            options = m.group(1)
+            pattern = m.group(2)
+            result = int(m.group(3))
+
+            # Get rid of spaces
+            pattern = pattern.replace(" ", "").replace("\n", "")
+
+            patterns += self._pattern_permute(pattern, options, result)
+
+        # compile the patterns into regular expressions for speed
+        for i, pattern in enumerate(patterns):
+            p = pattern[0].replace(".", "X").replace("X", "[01]")
+            p = re.compile(p)
+            patterns[i] = (p, pattern[1])
+
+        # Step through table and find patterns that match.
+        # Note that all the patterns are searched. The last one
+        # caught overrides
+        for i in range(LUT_SIZE):
+            # Build the bit pattern
+            bitpattern = bin(i)[2:]
+            bitpattern = ("0" * (9 - len(bitpattern)) + bitpattern)[::-1]
+
+            for p, r in patterns:
+                if p.match(bitpattern):
+                    self.lut[i] = [0, 1][r]
+
+        return self.lut
+
+
+class MorphOp:
+    """A class for binary morphological operators"""
+
+    def __init__(self, lut=None, op_name=None, patterns=None):
+        """Create a binary morphological operator"""
+        self.lut = lut
+        if op_name is not None:
+            self.lut = LutBuilder(op_name=op_name).build_lut()
+        elif patterns is not None:
+            self.lut = LutBuilder(patterns=patterns).build_lut()
+
+    def apply(self, image):
+        """Run a single morphological operation on an image
+
+        Returns a tuple of the number of changed pixels and the
+        morphed image"""
+        if self.lut is None:
+            msg = "No operator loaded"
+            raise Exception(msg)
+
+        if image.mode != "L":
+            msg = "Image mode must be L"
+            raise ValueError(msg)
+        outimage = Image.new(image.mode, image.size, None)
+        count = _imagingmorph.apply(bytes(self.lut), image.im.id, outimage.im.id)
+        return count, outimage
+
+    def match(self, image):
+        """Get a list of coordinates matching the morphological operation on
+        an image.
+
+        Returns a list of tuples of (x,y) coordinates
+        of all matching pixels. See :ref:`coordinate-system`."""
+        if self.lut is None:
+            msg = "No operator loaded"
+            raise Exception(msg)
+
+        if image.mode != "L":
+            msg = "Image mode must be L"
+            raise ValueError(msg)
+        return _imagingmorph.match(bytes(self.lut), image.im.id)
+
+    def get_on_pixels(self, image):
+        """Get a list of all turned on pixels in a binary image
+
+        Returns a list of tuples of (x,y) coordinates
+        of all matching pixels. See :ref:`coordinate-system`."""
+
+        if image.mode != "L":
+            msg = "Image mode must be L"
+            raise ValueError(msg)
+        return _imagingmorph.get_on_pixels(image.im.id)
+
+    def load_lut(self, filename):
+        """Load an operator from an mrl file"""
+        with open(filename, "rb") as f:
+            self.lut = bytearray(f.read())
+
+        if len(self.lut) != LUT_SIZE:
+            self.lut = None
+            msg = "Wrong size operator file!"
+            raise Exception(msg)
+
+    def save_lut(self, filename):
+        """Save an operator to an mrl file"""
+        if self.lut is None:
+            msg = "No operator loaded"
+            raise Exception(msg)
+        with open(filename, "wb") as f:
+            f.write(self.lut)
+
+    def set_lut(self, lut):
+        """Set the lut from an external source"""
+        self.lut = lut

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageOps.py

@@ -0,0 +1,628 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# standard image operations
+#
+# History:
+# 2001-10-20 fl   Created
+# 2001-10-23 fl   Added autocontrast operator
+# 2001-12-18 fl   Added Kevin's fit operator
+# 2004-03-14 fl   Fixed potential division by zero in equalize
+# 2005-05-05 fl   Fixed equalize for low number of values
+#
+# Copyright (c) 2001-2004 by Secret Labs AB
+# Copyright (c) 2001-2004 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import functools
+import operator
+import re
+
+from . import ExifTags, Image, ImagePalette
+
+#
+# helpers
+
+
+def _border(border):
+    if isinstance(border, tuple):
+        if len(border) == 2:
+            left, top = right, bottom = border
+        elif len(border) == 4:
+            left, top, right, bottom = border
+    else:
+        left = top = right = bottom = border
+    return left, top, right, bottom
+
+
+def _color(color, mode):
+    if isinstance(color, str):
+        from . import ImageColor
+
+        color = ImageColor.getcolor(color, mode)
+    return color
+
+
+def _lut(image, lut):
+    if image.mode == "P":
+        # FIXME: apply to lookup table, not image data
+        msg = "mode P support coming soon"
+        raise NotImplementedError(msg)
+    elif image.mode in ("L", "RGB"):
+        if image.mode == "RGB" and len(lut) == 256:
+            lut = lut + lut + lut
+        return image.point(lut)
+    else:
+        msg = "not supported for this image mode"
+        raise OSError(msg)
+
+
+#
+# actions
+
+
+def autocontrast(image, cutoff=0, ignore=None, mask=None, preserve_tone=False):
+    """
+    Maximize (normalize) image contrast. This function calculates a
+    histogram of the input image (or mask region), removes ``cutoff`` percent of the
+    lightest and darkest pixels from the histogram, and remaps the image
+    so that the darkest pixel becomes black (0), and the lightest
+    becomes white (255).
+
+    :param image: The image to process.
+    :param cutoff: The percent to cut off from the histogram on the low and
+                   high ends. Either a tuple of (low, high), or a single
+                   number for both.
+    :param ignore: The background pixel value (use None for no background).
+    :param mask: Histogram used in contrast operation is computed using pixels
+                 within the mask. If no mask is given the entire image is used
+                 for histogram computation.
+    :param preserve_tone: Preserve image tone in Photoshop-like style autocontrast.
+
+                          .. versionadded:: 8.2.0
+
+    :return: An image.
+    """
+    if preserve_tone:
+        histogram = image.convert("L").histogram(mask)
+    else:
+        histogram = image.histogram(mask)
+
+    lut = []
+    for layer in range(0, len(histogram), 256):
+        h = histogram[layer : layer + 256]
+        if ignore is not None:
+            # get rid of outliers
+            try:
+                h[ignore] = 0
+            except TypeError:
+                # assume sequence
+                for ix in ignore:
+                    h[ix] = 0
+        if cutoff:
+            # cut off pixels from both ends of the histogram
+            if not isinstance(cutoff, tuple):
+                cutoff = (cutoff, cutoff)
+            # get number of pixels
+            n = 0
+            for ix in range(256):
+                n = n + h[ix]
+            # remove cutoff% pixels from the low end
+            cut = n * cutoff[0] // 100
+            for lo in range(256):
+                if cut > h[lo]:
+                    cut = cut - h[lo]
+                    h[lo] = 0
+                else:
+                    h[lo] -= cut
+                    cut = 0
+                if cut <= 0:
+                    break
+            # remove cutoff% samples from the high end
+            cut = n * cutoff[1] // 100
+            for hi in range(255, -1, -1):
+                if cut > h[hi]:
+                    cut = cut - h[hi]
+                    h[hi] = 0
+                else:
+                    h[hi] -= cut
+                    cut = 0
+                if cut <= 0:
+                    break
+        # find lowest/highest samples after preprocessing
+        for lo in range(256):
+            if h[lo]:
+                break
+        for hi in range(255, -1, -1):
+            if h[hi]:
+                break
+        if hi <= lo:
+            # don't bother
+            lut.extend(list(range(256)))
+        else:
+            scale = 255.0 / (hi - lo)
+            offset = -lo * scale
+            for ix in range(256):
+                ix = int(ix * scale + offset)
+                if ix < 0:
+                    ix = 0
+                elif ix > 255:
+                    ix = 255
+                lut.append(ix)
+    return _lut(image, lut)
+
+
+def colorize(image, black, white, mid=None, blackpoint=0, whitepoint=255, midpoint=127):
+    """
+    Colorize grayscale image.
+    This function calculates a color wedge which maps all black pixels in
+    the source image to the first color and all white pixels to the
+    second color. If ``mid`` is specified, it uses three-color mapping.
+    The ``black`` and ``white`` arguments should be RGB tuples or color names;
+    optionally you can use three-color mapping by also specifying ``mid``.
+    Mapping positions for any of the colors can be specified
+    (e.g. ``blackpoint``), where these parameters are the integer
+    value corresponding to where the corresponding color should be mapped.
+    These parameters must have logical order, such that
+    ``blackpoint <= midpoint <= whitepoint`` (if ``mid`` is specified).
+
+    :param image: The image to colorize.
+    :param black: The color to use for black input pixels.
+    :param white: The color to use for white input pixels.
+    :param mid: The color to use for midtone input pixels.
+    :param blackpoint: an int value [0, 255] for the black mapping.
+    :param whitepoint: an int value [0, 255] for the white mapping.
+    :param midpoint: an int value [0, 255] for the midtone mapping.
+    :return: An image.
+    """
+
+    # Initial asserts
+    assert image.mode == "L"
+    if mid is None:
+        assert 0 <= blackpoint <= whitepoint <= 255
+    else:
+        assert 0 <= blackpoint <= midpoint <= whitepoint <= 255
+
+    # Define colors from arguments
+    black = _color(black, "RGB")
+    white = _color(white, "RGB")
+    if mid is not None:
+        mid = _color(mid, "RGB")
+
+    # Empty lists for the mapping
+    red = []
+    green = []
+    blue = []
+
+    # Create the low-end values
+    for i in range(0, blackpoint):
+        red.append(black[0])
+        green.append(black[1])
+        blue.append(black[2])
+
+    # Create the mapping (2-color)
+    if mid is None:
+        range_map = range(0, whitepoint - blackpoint)
+
+        for i in range_map:
+            red.append(black[0] + i * (white[0] - black[0]) // len(range_map))
+            green.append(black[1] + i * (white[1] - black[1]) // len(range_map))
+            blue.append(black[2] + i * (white[2] - black[2]) // len(range_map))
+
+    # Create the mapping (3-color)
+    else:
+        range_map1 = range(0, midpoint - blackpoint)
+        range_map2 = range(0, whitepoint - midpoint)
+
+        for i in range_map1:
+            red.append(black[0] + i * (mid[0] - black[0]) // len(range_map1))
+            green.append(black[1] + i * (mid[1] - black[1]) // len(range_map1))
+            blue.append(black[2] + i * (mid[2] - black[2]) // len(range_map1))
+        for i in range_map2:
+            red.append(mid[0] + i * (white[0] - mid[0]) // len(range_map2))
+            green.append(mid[1] + i * (white[1] - mid[1]) // len(range_map2))
+            blue.append(mid[2] + i * (white[2] - mid[2]) // len(range_map2))
+
+    # Create the high-end values
+    for i in range(0, 256 - whitepoint):
+        red.append(white[0])
+        green.append(white[1])
+        blue.append(white[2])
+
+    # Return converted image
+    image = image.convert("RGB")
+    return _lut(image, red + green + blue)
+
+
+def contain(image, size, method=Image.Resampling.BICUBIC):
+    """
+    Returns a resized version of the image, set to the maximum width and height
+    within the requested size, while maintaining the original aspect ratio.
+
+    :param image: The image to resize and crop.
+    :param size: The requested output size in pixels, given as a
+                 (width, height) tuple.
+    :param method: Resampling method to use. Default is
+                   :py:attr:`~PIL.Image.Resampling.BICUBIC`.
+                   See :ref:`concept-filters`.
+    :return: An image.
+    """
+
+    im_ratio = image.width / image.height
+    dest_ratio = size[0] / size[1]
+
+    if im_ratio != dest_ratio:
+        if im_ratio > dest_ratio:
+            new_height = round(image.height / image.width * size[0])
+            if new_height != size[1]:
+                size = (size[0], new_height)
+        else:
+            new_width = round(image.width / image.height * size[1])
+            if new_width != size[0]:
+                size = (new_width, size[1])
+    return image.resize(size, resample=method)
+
+
+def pad(image, size, method=Image.Resampling.BICUBIC, color=None, centering=(0.5, 0.5)):
+    """
+    Returns a resized and padded version of the image, expanded to fill the
+    requested aspect ratio and size.
+
+    :param image: The image to resize and crop.
+    :param size: The requested output size in pixels, given as a
+                 (width, height) tuple.
+    :param method: Resampling method to use. Default is
+                   :py:attr:`~PIL.Image.Resampling.BICUBIC`.
+                   See :ref:`concept-filters`.
+    :param color: The background color of the padded image.
+    :param centering: Control the position of the original image within the
+                      padded version.
+
+                          (0.5, 0.5) will keep the image centered
+                          (0, 0) will keep the image aligned to the top left
+                          (1, 1) will keep the image aligned to the bottom
+                          right
+    :return: An image.
+    """
+
+    resized = contain(image, size, method)
+    if resized.size == size:
+        out = resized
+    else:
+        out = Image.new(image.mode, size, color)
+        if resized.palette:
+            out.putpalette(resized.getpalette())
+        if resized.width != size[0]:
+            x = round((size[0] - resized.width) * max(0, min(centering[0], 1)))
+            out.paste(resized, (x, 0))
+        else:
+            y = round((size[1] - resized.height) * max(0, min(centering[1], 1)))
+            out.paste(resized, (0, y))
+    return out
+
+
+def crop(image, border=0):
+    """
+    Remove border from image.  The same amount of pixels are removed
+    from all four sides.  This function works on all image modes.
+
+    .. seealso:: :py:meth:`~PIL.Image.Image.crop`
+
+    :param image: The image to crop.
+    :param border: The number of pixels to remove.
+    :return: An image.
+    """
+    left, top, right, bottom = _border(border)
+    return image.crop((left, top, image.size[0] - right, image.size[1] - bottom))
+
+
+def scale(image, factor, resample=Image.Resampling.BICUBIC):
+    """
+    Returns a rescaled image by a specific factor given in parameter.
+    A factor greater than 1 expands the image, between 0 and 1 contracts the
+    image.
+
+    :param image: The image to rescale.
+    :param factor: The expansion factor, as a float.
+    :param resample: Resampling method to use. Default is
+                     :py:attr:`~PIL.Image.Resampling.BICUBIC`.
+                     See :ref:`concept-filters`.
+    :returns: An :py:class:`~PIL.Image.Image` object.
+    """
+    if factor == 1:
+        return image.copy()
+    elif factor <= 0:
+        msg = "the factor must be greater than 0"
+        raise ValueError(msg)
+    else:
+        size = (round(factor * image.width), round(factor * image.height))
+        return image.resize(size, resample)
+
+
+def deform(image, deformer, resample=Image.Resampling.BILINEAR):
+    """
+    Deform the image.
+
+    :param image: The image to deform.
+    :param deformer: A deformer object.  Any object that implements a
+                    ``getmesh`` method can be used.
+    :param resample: An optional resampling filter. Same values possible as
+       in the PIL.Image.transform function.
+    :return: An image.
+    """
+    return image.transform(
+        image.size, Image.Transform.MESH, deformer.getmesh(image), resample
+    )
+
+
+def equalize(image, mask=None):
+    """
+    Equalize the image histogram. This function applies a non-linear
+    mapping to the input image, in order to create a uniform
+    distribution of grayscale values in the output image.
+
+    :param image: The image to equalize.
+    :param mask: An optional mask.  If given, only the pixels selected by
+                 the mask are included in the analysis.
+    :return: An image.
+    """
+    if image.mode == "P":
+        image = image.convert("RGB")
+    h = image.histogram(mask)
+    lut = []
+    for b in range(0, len(h), 256):
+        histo = [_f for _f in h[b : b + 256] if _f]
+        if len(histo) <= 1:
+            lut.extend(list(range(256)))
+        else:
+            step = (functools.reduce(operator.add, histo) - histo[-1]) // 255
+            if not step:
+                lut.extend(list(range(256)))
+            else:
+                n = step // 2
+                for i in range(256):
+                    lut.append(n // step)
+                    n = n + h[i + b]
+    return _lut(image, lut)
+
+
+def expand(image, border=0, fill=0):
+    """
+    Add border to the image
+
+    :param image: The image to expand.
+    :param border: Border width, in pixels.
+    :param fill: Pixel fill value (a color value).  Default is 0 (black).
+    :return: An image.
+    """
+    left, top, right, bottom = _border(border)
+    width = left + image.size[0] + right
+    height = top + image.size[1] + bottom
+    color = _color(fill, image.mode)
+    if image.palette:
+        palette = ImagePalette.ImagePalette(palette=image.getpalette())
+        if isinstance(color, tuple):
+            color = palette.getcolor(color)
+    else:
+        palette = None
+    out = Image.new(image.mode, (width, height), color)
+    if palette:
+        out.putpalette(palette.palette)
+    out.paste(image, (left, top))
+    return out
+
+
+def fit(image, size, method=Image.Resampling.BICUBIC, bleed=0.0, centering=(0.5, 0.5)):
+    """
+    Returns a resized and cropped version of the image, cropped to the
+    requested aspect ratio and size.
+
+    This function was contributed by Kevin Cazabon.
+
+    :param image: The image to resize and crop.
+    :param size: The requested output size in pixels, given as a
+                 (width, height) tuple.
+    :param method: Resampling method to use. Default is
+                   :py:attr:`~PIL.Image.Resampling.BICUBIC`.
+                   See :ref:`concept-filters`.
+    :param bleed: Remove a border around the outside of the image from all
+                  four edges. The value is a decimal percentage (use 0.01 for
+                  one percent). The default value is 0 (no border).
+                  Cannot be greater than or equal to 0.5.
+    :param centering: Control the cropping position.  Use (0.5, 0.5) for
+                      center cropping (e.g. if cropping the width, take 50% off
+                      of the left side, and therefore 50% off the right side).
+                      (0.0, 0.0) will crop from the top left corner (i.e. if
+                      cropping the width, take all of the crop off of the right
+                      side, and if cropping the height, take all of it off the
+                      bottom).  (1.0, 0.0) will crop from the bottom left
+                      corner, etc. (i.e. if cropping the width, take all of the
+                      crop off the left side, and if cropping the height take
+                      none from the top, and therefore all off the bottom).
+    :return: An image.
+    """
+
+    # by Kevin Cazabon, Feb 17/2000
+    # kevin@cazabon.com
+    # https://www.cazabon.com
+
+    # ensure centering is mutable
+    centering = list(centering)
+
+    if not 0.0 <= centering[0] <= 1.0:
+        centering[0] = 0.5
+    if not 0.0 <= centering[1] <= 1.0:
+        centering[1] = 0.5
+
+    if not 0.0 <= bleed < 0.5:
+        bleed = 0.0
+
+    # calculate the area to use for resizing and cropping, subtracting
+    # the 'bleed' around the edges
+
+    # number of pixels to trim off on Top and Bottom, Left and Right
+    bleed_pixels = (bleed * image.size[0], bleed * image.size[1])
+
+    live_size = (
+        image.size[0] - bleed_pixels[0] * 2,
+        image.size[1] - bleed_pixels[1] * 2,
+    )
+
+    # calculate the aspect ratio of the live_size
+    live_size_ratio = live_size[0] / live_size[1]
+
+    # calculate the aspect ratio of the output image
+    output_ratio = size[0] / size[1]
+
+    # figure out if the sides or top/bottom will be cropped off
+    if live_size_ratio == output_ratio:
+        # live_size is already the needed ratio
+        crop_width = live_size[0]
+        crop_height = live_size[1]
+    elif live_size_ratio >= output_ratio:
+        # live_size is wider than what's needed, crop the sides
+        crop_width = output_ratio * live_size[1]
+        crop_height = live_size[1]
+    else:
+        # live_size is taller than what's needed, crop the top and bottom
+        crop_width = live_size[0]
+        crop_height = live_size[0] / output_ratio
+
+    # make the crop
+    crop_left = bleed_pixels[0] + (live_size[0] - crop_width) * centering[0]
+    crop_top = bleed_pixels[1] + (live_size[1] - crop_height) * centering[1]
+
+    crop = (crop_left, crop_top, crop_left + crop_width, crop_top + crop_height)
+
+    # resize the image and return it
+    return image.resize(size, method, box=crop)
+
+
+def flip(image):
+    """
+    Flip the image vertically (top to bottom).
+
+    :param image: The image to flip.
+    :return: An image.
+    """
+    return image.transpose(Image.Transpose.FLIP_TOP_BOTTOM)
+
+
+def grayscale(image):
+    """
+    Convert the image to grayscale.
+
+    :param image: The image to convert.
+    :return: An image.
+    """
+    return image.convert("L")
+
+
+def invert(image):
+    """
+    Invert (negate) the image.
+
+    :param image: The image to invert.
+    :return: An image.
+    """
+    lut = []
+    for i in range(256):
+        lut.append(255 - i)
+    return image.point(lut) if image.mode == "1" else _lut(image, lut)
+
+
+def mirror(image):
+    """
+    Flip image horizontally (left to right).
+
+    :param image: The image to mirror.
+    :return: An image.
+    """
+    return image.transpose(Image.Transpose.FLIP_LEFT_RIGHT)
+
+
+def posterize(image, bits):
+    """
+    Reduce the number of bits for each color channel.
+
+    :param image: The image to posterize.
+    :param bits: The number of bits to keep for each channel (1-8).
+    :return: An image.
+    """
+    lut = []
+    mask = ~(2 ** (8 - bits) - 1)
+    for i in range(256):
+        lut.append(i & mask)
+    return _lut(image, lut)
+
+
+def solarize(image, threshold=128):
+    """
+    Invert all pixel values above a threshold.
+
+    :param image: The image to solarize.
+    :param threshold: All pixels above this greyscale level are inverted.
+    :return: An image.
+    """
+    lut = []
+    for i in range(256):
+        if i < threshold:
+            lut.append(i)
+        else:
+            lut.append(255 - i)
+    return _lut(image, lut)
+
+
+def exif_transpose(image, *, in_place=False):
+    """
+    If an image has an EXIF Orientation tag, other than 1, transpose the image
+    accordingly, and remove the orientation data.
+
+    :param image: The image to transpose.
+    :param in_place: Boolean. Keyword-only argument.
+        If ``True``, the original image is modified in-place, and ``None`` is returned.
+        If ``False`` (default), a new :py:class:`~PIL.Image.Image` object is returned
+        with the transposition applied. If there is no transposition, a copy of the
+        image will be returned.
+    """
+    image_exif = image.getexif()
+    orientation = image_exif.get(ExifTags.Base.Orientation)
+    method = {
+        2: Image.Transpose.FLIP_LEFT_RIGHT,
+        3: Image.Transpose.ROTATE_180,
+        4: Image.Transpose.FLIP_TOP_BOTTOM,
+        5: Image.Transpose.TRANSPOSE,
+        6: Image.Transpose.ROTATE_270,
+        7: Image.Transpose.TRANSVERSE,
+        8: Image.Transpose.ROTATE_90,
+    }.get(orientation)
+    if method is not None:
+        transposed_image = image.transpose(method)
+        if in_place:
+            image.im = transposed_image.im
+            image.pyaccess = None
+            image._size = transposed_image._size
+        exif_image = image if in_place else transposed_image
+
+        exif = exif_image.getexif()
+        if ExifTags.Base.Orientation in exif:
+            del exif[ExifTags.Base.Orientation]
+            if "exif" in exif_image.info:
+                exif_image.info["exif"] = exif.tobytes()
+            elif "Raw profile type exif" in exif_image.info:
+                exif_image.info["Raw profile type exif"] = exif.tobytes().hex()
+            elif "XML:com.adobe.xmp" in exif_image.info:
+                for pattern in (
+                    r'tiff:Orientation="([0-9])"',
+                    r"<tiff:Orientation>([0-9])</tiff:Orientation>",
+                ):
+                    exif_image.info["XML:com.adobe.xmp"] = re.sub(
+                        pattern, "", exif_image.info["XML:com.adobe.xmp"]
+                    )
+        if not in_place:
+            return transposed_image
+    elif not in_place:
+        return image.copy()

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImagePalette.py

@@ -0,0 +1,266 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# image palette object
+#
+# History:
+# 1996-03-11 fl   Rewritten.
+# 1997-01-03 fl   Up and running.
+# 1997-08-23 fl   Added load hack
+# 2001-04-16 fl   Fixed randint shadow bug in random()
+#
+# Copyright (c) 1997-2001 by Secret Labs AB
+# Copyright (c) 1996-1997 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import array
+
+from . import GimpGradientFile, GimpPaletteFile, ImageColor, PaletteFile
+
+
+class ImagePalette:
+    """
+    Color palette for palette mapped images
+
+    :param mode: The mode to use for the palette. See:
+        :ref:`concept-modes`. Defaults to "RGB"
+    :param palette: An optional palette. If given, it must be a bytearray,
+        an array or a list of ints between 0-255. The list must consist of
+        all channels for one color followed by the next color (e.g. RGBRGBRGB).
+        Defaults to an empty palette.
+    """
+
+    def __init__(self, mode="RGB", palette=None):
+        self.mode = mode
+        self.rawmode = None  # if set, palette contains raw data
+        self.palette = palette or bytearray()
+        self.dirty = None
+
+    @property
+    def palette(self):
+        return self._palette
+
+    @palette.setter
+    def palette(self, palette):
+        self._colors = None
+        self._palette = palette
+
+    @property
+    def colors(self):
+        if self._colors is None:
+            mode_len = len(self.mode)
+            self._colors = {}
+            for i in range(0, len(self.palette), mode_len):
+                color = tuple(self.palette[i : i + mode_len])
+                if color in self._colors:
+                    continue
+                self._colors[color] = i // mode_len
+        return self._colors
+
+    @colors.setter
+    def colors(self, colors):
+        self._colors = colors
+
+    def copy(self):
+        new = ImagePalette()
+
+        new.mode = self.mode
+        new.rawmode = self.rawmode
+        if self.palette is not None:
+            new.palette = self.palette[:]
+        new.dirty = self.dirty
+
+        return new
+
+    def getdata(self):
+        """
+        Get palette contents in format suitable for the low-level
+        ``im.putpalette`` primitive.
+
+        .. warning:: This method is experimental.
+        """
+        if self.rawmode:
+            return self.rawmode, self.palette
+        return self.mode, self.tobytes()
+
+    def tobytes(self):
+        """Convert palette to bytes.
+
+        .. warning:: This method is experimental.
+        """
+        if self.rawmode:
+            msg = "palette contains raw palette data"
+            raise ValueError(msg)
+        if isinstance(self.palette, bytes):
+            return self.palette
+        arr = array.array("B", self.palette)
+        return arr.tobytes()
+
+    # Declare tostring as an alias for tobytes
+    tostring = tobytes
+
+    def getcolor(self, color, image=None):
+        """Given an rgb tuple, allocate palette entry.
+
+        .. warning:: This method is experimental.
+        """
+        if self.rawmode:
+            msg = "palette contains raw palette data"
+            raise ValueError(msg)
+        if isinstance(color, tuple):
+            if self.mode == "RGB":
+                if len(color) == 4:
+                    if color[3] != 255:
+                        msg = "cannot add non-opaque RGBA color to RGB palette"
+                        raise ValueError(msg)
+                    color = color[:3]
+            elif self.mode == "RGBA":
+                if len(color) == 3:
+                    color += (255,)
+            try:
+                return self.colors[color]
+            except KeyError as e:
+                # allocate new color slot
+                if not isinstance(self.palette, bytearray):
+                    self._palette = bytearray(self.palette)
+                index = len(self.palette) // 3
+                special_colors = ()
+                if image:
+                    special_colors = (
+                        image.info.get("background"),
+                        image.info.get("transparency"),
+                    )
+                while index in special_colors:
+                    index += 1
+                if index >= 256:
+                    if image:
+                        # Search for an unused index
+                        for i, count in reversed(list(enumerate(image.histogram()))):
+                            if count == 0 and i not in special_colors:
+                                index = i
+                                break
+                    if index >= 256:
+                        msg = "cannot allocate more than 256 colors"
+                        raise ValueError(msg) from e
+                self.colors[color] = index
+                if index * 3 < len(self.palette):
+                    self._palette = (
+                        self.palette[: index * 3]
+                        + bytes(color)
+                        + self.palette[index * 3 + 3 :]
+                    )
+                else:
+                    self._palette += bytes(color)
+                self.dirty = 1
+                return index
+        else:
+            msg = f"unknown color specifier: {repr(color)}"
+            raise ValueError(msg)
+
+    def save(self, fp):
+        """Save palette to text file.
+
+        .. warning:: This method is experimental.
+        """
+        if self.rawmode:
+            msg = "palette contains raw palette data"
+            raise ValueError(msg)
+        if isinstance(fp, str):
+            fp = open(fp, "w")
+        fp.write("# Palette\n")
+        fp.write(f"# Mode: {self.mode}\n")
+        for i in range(256):
+            fp.write(f"{i}")
+            for j in range(i * len(self.mode), (i + 1) * len(self.mode)):
+                try:
+                    fp.write(f" {self.palette[j]}")
+                except IndexError:
+                    fp.write(" 0")
+            fp.write("\n")
+        fp.close()
+
+
+# --------------------------------------------------------------------
+# Internal
+
+
+def raw(rawmode, data):
+    palette = ImagePalette()
+    palette.rawmode = rawmode
+    palette.palette = data
+    palette.dirty = 1
+    return palette
+
+
+# --------------------------------------------------------------------
+# Factories
+
+
+def make_linear_lut(black, white):
+    lut = []
+    if black == 0:
+        for i in range(256):
+            lut.append(white * i // 255)
+    else:
+        raise NotImplementedError  # FIXME
+    return lut
+
+
+def make_gamma_lut(exp):
+    lut = []
+    for i in range(256):
+        lut.append(int(((i / 255.0) ** exp) * 255.0 + 0.5))
+    return lut
+
+
+def negative(mode="RGB"):
+    palette = list(range(256 * len(mode)))
+    palette.reverse()
+    return ImagePalette(mode, [i // len(mode) for i in palette])
+
+
+def random(mode="RGB"):
+    from random import randint
+
+    palette = []
+    for i in range(256 * len(mode)):
+        palette.append(randint(0, 255))
+    return ImagePalette(mode, palette)
+
+
+def sepia(white="#fff0c0"):
+    bands = [make_linear_lut(0, band) for band in ImageColor.getrgb(white)]
+    return ImagePalette("RGB", [bands[i % 3][i // 3] for i in range(256 * 3)])
+
+
+def wedge(mode="RGB"):
+    palette = list(range(256 * len(mode)))
+    return ImagePalette(mode, [i // len(mode) for i in palette])
+
+
+def load(filename):
+    # FIXME: supports GIMP gradients only
+
+    with open(filename, "rb") as fp:
+        for paletteHandler in [
+            GimpPaletteFile.GimpPaletteFile,
+            GimpGradientFile.GimpGradientFile,
+            PaletteFile.PaletteFile,
+        ]:
+            try:
+                fp.seek(0)
+                lut = paletteHandler(fp).getpalette()
+                if lut:
+                    break
+            except (SyntaxError, ValueError):
+                # import traceback
+                # traceback.print_exc()
+                pass
+        else:
+            msg = "cannot load palette"
+            raise OSError(msg)
+
+    return lut  # data, rawmode

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImagePath.py

@@ -0,0 +1,19 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# path interface
+#
+# History:
+# 1996-11-04 fl   Created
+# 2002-04-14 fl   Added documentation stub class
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1996.
+#
+# See the README file for information on usage and redistribution.
+#
+
+from . import Image
+
+Path = Image.core.path

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageQt.py

@@ -0,0 +1,216 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# a simple Qt image interface.
+#
+# history:
+# 2006-06-03 fl: created
+# 2006-06-04 fl: inherit from QImage instead of wrapping it
+# 2006-06-05 fl: removed toimage helper; move string support to ImageQt
+# 2013-11-13 fl: add support for Qt5 (aurelien.ballier@cyclonit.com)
+#
+# Copyright (c) 2006 by Secret Labs AB
+# Copyright (c) 2006 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import sys
+from io import BytesIO
+
+from . import Image
+from ._util import is_path
+
+qt_versions = [
+    ["6", "PyQt6"],
+    ["side6", "PySide6"],
+]
+
+# If a version has already been imported, attempt it first
+qt_versions.sort(key=lambda qt_version: qt_version[1] in sys.modules, reverse=True)
+for qt_version, qt_module in qt_versions:
+    try:
+        if qt_module == "PyQt6":
+            from PyQt6.QtCore import QBuffer, QIODevice
+            from PyQt6.QtGui import QImage, QPixmap, qRgba
+        elif qt_module == "PySide6":
+            from PySide6.QtCore import QBuffer, QIODevice
+            from PySide6.QtGui import QImage, QPixmap, qRgba
+    except (ImportError, RuntimeError):
+        continue
+    qt_is_installed = True
+    break
+else:
+    qt_is_installed = False
+    qt_version = None
+
+
+def rgb(r, g, b, a=255):
+    """(Internal) Turns an RGB color into a Qt compatible color integer."""
+    # use qRgb to pack the colors, and then turn the resulting long
+    # into a negative integer with the same bitpattern.
+    return qRgba(r, g, b, a) & 0xFFFFFFFF
+
+
+def fromqimage(im):
+    """
+    :param im: QImage or PIL ImageQt object
+    """
+    buffer = QBuffer()
+    if qt_version == "6":
+        try:
+            qt_openmode = QIODevice.OpenModeFlag
+        except AttributeError:
+            qt_openmode = QIODevice.OpenMode
+    else:
+        qt_openmode = QIODevice
+    buffer.open(qt_openmode.ReadWrite)
+    # preserve alpha channel with png
+    # otherwise ppm is more friendly with Image.open
+    if im.hasAlphaChannel():
+        im.save(buffer, "png")
+    else:
+        im.save(buffer, "ppm")
+
+    b = BytesIO()
+    b.write(buffer.data())
+    buffer.close()
+    b.seek(0)
+
+    return Image.open(b)
+
+
+def fromqpixmap(im):
+    return fromqimage(im)
+    # buffer = QBuffer()
+    # buffer.open(QIODevice.ReadWrite)
+    # # im.save(buffer)
+    # # What if png doesn't support some image features like animation?
+    # im.save(buffer, 'ppm')
+    # bytes_io = BytesIO()
+    # bytes_io.write(buffer.data())
+    # buffer.close()
+    # bytes_io.seek(0)
+    # return Image.open(bytes_io)
+
+
+def align8to32(bytes, width, mode):
+    """
+    converts each scanline of data from 8 bit to 32 bit aligned
+    """
+
+    bits_per_pixel = {"1": 1, "L": 8, "P": 8, "I;16": 16}[mode]
+
+    # calculate bytes per line and the extra padding if needed
+    bits_per_line = bits_per_pixel * width
+    full_bytes_per_line, remaining_bits_per_line = divmod(bits_per_line, 8)
+    bytes_per_line = full_bytes_per_line + (1 if remaining_bits_per_line else 0)
+
+    extra_padding = -bytes_per_line % 4
+
+    # already 32 bit aligned by luck
+    if not extra_padding:
+        return bytes
+
+    new_data = []
+    for i in range(len(bytes) // bytes_per_line):
+        new_data.append(
+            bytes[i * bytes_per_line : (i + 1) * bytes_per_line]
+            + b"\x00" * extra_padding
+        )
+
+    return b"".join(new_data)
+
+
+def _toqclass_helper(im):
+    data = None
+    colortable = None
+    exclusive_fp = False
+
+    # handle filename, if given instead of image name
+    if hasattr(im, "toUtf8"):
+        # FIXME - is this really the best way to do this?
+        im = str(im.toUtf8(), "utf-8")
+    if is_path(im):
+        im = Image.open(im)
+        exclusive_fp = True
+
+    qt_format = QImage.Format if qt_version == "6" else QImage
+    if im.mode == "1":
+        format = qt_format.Format_Mono
+    elif im.mode == "L":
+        format = qt_format.Format_Indexed8
+        colortable = []
+        for i in range(256):
+            colortable.append(rgb(i, i, i))
+    elif im.mode == "P":
+        format = qt_format.Format_Indexed8
+        colortable = []
+        palette = im.getpalette()
+        for i in range(0, len(palette), 3):
+            colortable.append(rgb(*palette[i : i + 3]))
+    elif im.mode == "RGB":
+        # Populate the 4th channel with 255
+        im = im.convert("RGBA")
+
+        data = im.tobytes("raw", "BGRA")
+        format = qt_format.Format_RGB32
+    elif im.mode == "RGBA":
+        data = im.tobytes("raw", "BGRA")
+        format = qt_format.Format_ARGB32
+    elif im.mode == "I;16" and hasattr(qt_format, "Format_Grayscale16"):  # Qt 5.13+
+        im = im.point(lambda i: i * 256)
+
+        format = qt_format.Format_Grayscale16
+    else:
+        if exclusive_fp:
+            im.close()
+        msg = f"unsupported image mode {repr(im.mode)}"
+        raise ValueError(msg)
+
+    size = im.size
+    __data = data or align8to32(im.tobytes(), size[0], im.mode)
+    if exclusive_fp:
+        im.close()
+    return {"data": __data, "size": size, "format": format, "colortable": colortable}
+
+
+if qt_is_installed:
+
+    class ImageQt(QImage):
+        def __init__(self, im):
+            """
+            An PIL image wrapper for Qt.  This is a subclass of PyQt's QImage
+            class.
+
+            :param im: A PIL Image object, or a file name (given either as
+                Python string or a PyQt string object).
+            """
+            im_data = _toqclass_helper(im)
+            # must keep a reference, or Qt will crash!
+            # All QImage constructors that take data operate on an existing
+            # buffer, so this buffer has to hang on for the life of the image.
+            # Fixes https://github.com/python-pillow/Pillow/issues/1370
+            self.__data = im_data["data"]
+            super().__init__(
+                self.__data,
+                im_data["size"][0],
+                im_data["size"][1],
+                im_data["format"],
+            )
+            if im_data["colortable"]:
+                self.setColorTable(im_data["colortable"])
+
+
+def toqimage(im):
+    return ImageQt(im)
+
+
+def toqpixmap(im):
+    # # This doesn't work. For now using a dumb approach.
+    # im_data = _toqclass_helper(im)
+    # result = QPixmap(im_data["size"][0], im_data["size"][1])
+    # result.loadFromData(im_data["data"])
+    qimage = toqimage(im)
+    return QPixmap.fromImage(qimage)

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageSequence.py

@@ -0,0 +1,76 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# sequence support classes
+#
+# history:
+# 1997-02-20 fl     Created
+#
+# Copyright (c) 1997 by Secret Labs AB.
+# Copyright (c) 1997 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+##
+
+
+class Iterator:
+    """
+    This class implements an iterator object that can be used to loop
+    over an image sequence.
+
+    You can use the ``[]`` operator to access elements by index. This operator
+    will raise an :py:exc:`IndexError` if you try to access a nonexistent
+    frame.
+
+    :param im: An image object.
+    """
+
+    def __init__(self, im):
+        if not hasattr(im, "seek"):
+            msg = "im must have seek method"
+            raise AttributeError(msg)
+        self.im = im
+        self.position = getattr(self.im, "_min_frame", 0)
+
+    def __getitem__(self, ix):
+        try:
+            self.im.seek(ix)
+            return self.im
+        except EOFError as e:
+            raise IndexError from e  # end of sequence
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        try:
+            self.im.seek(self.position)
+            self.position += 1
+            return self.im
+        except EOFError as e:
+            raise StopIteration from e
+
+
+def all_frames(im, func=None):
+    """
+    Applies a given function to all frames in an image or a list of images.
+    The frames are returned as a list of separate images.
+
+    :param im: An image, or a list of images.
+    :param func: The function to apply to all of the image frames.
+    :returns: A list of images.
+    """
+    if not isinstance(im, list):
+        im = [im]
+
+    ims = []
+    for imSequence in im:
+        current = imSequence.tell()
+
+        ims += [im_frame.copy() for im_frame in Iterator(imSequence)]
+
+        imSequence.seek(current)
+    return [func(im) for im in ims] if func else ims

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageShow.py

@@ -0,0 +1,323 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# im.show() drivers
+#
+# History:
+# 2008-04-06 fl   Created
+#
+# Copyright (c) Secret Labs AB 2008.
+#
+# See the README file for information on usage and redistribution.
+#
+import os
+import shutil
+import subprocess
+import sys
+from shlex import quote
+
+from . import Image
+
+_viewers = []
+
+
+def register(viewer, order=1):
+    """
+    The :py:func:`register` function is used to register additional viewers::
+
+        from PIL import ImageShow
+        ImageShow.register(MyViewer())  # MyViewer will be used as a last resort
+        ImageShow.register(MySecondViewer(), 0)  # MySecondViewer will be prioritised
+        ImageShow.register(ImageShow.XVViewer(), 0)  # XVViewer will be prioritised
+
+    :param viewer: The viewer to be registered.
+    :param order:
+        Zero or a negative integer to prepend this viewer to the list,
+        a positive integer to append it.
+    """
+    try:
+        if issubclass(viewer, Viewer):
+            viewer = viewer()
+    except TypeError:
+        pass  # raised if viewer wasn't a class
+    if order > 0:
+        _viewers.append(viewer)
+    else:
+        _viewers.insert(0, viewer)
+
+
+def show(image, title=None, **options):
+    r"""
+    Display a given image.
+
+    :param image: An image object.
+    :param title: Optional title. Not all viewers can display the title.
+    :param \**options: Additional viewer options.
+    :returns: ``True`` if a suitable viewer was found, ``False`` otherwise.
+    """
+    for viewer in _viewers:
+        if viewer.show(image, title=title, **options):
+            return True
+    return False
+
+
+class Viewer:
+    """Base class for viewers."""
+
+    # main api
+
+    def show(self, image, **options):
+        """
+        The main function for displaying an image.
+        Converts the given image to the target format and displays it.
+        """
+
+        if not (
+            image.mode in ("1", "RGBA")
+            or (self.format == "PNG" and image.mode in ("I;16", "LA"))
+        ):
+            base = Image.getmodebase(image.mode)
+            if image.mode != base:
+                image = image.convert(base)
+
+        return self.show_image(image, **options)
+
+    # hook methods
+
+    format = None
+    """The format to convert the image into."""
+    options = {}
+    """Additional options used to convert the image."""
+
+    def get_format(self, image):
+        """Return format name, or ``None`` to save as PGM/PPM."""
+        return self.format
+
+    def get_command(self, file, **options):
+        """
+        Returns the command used to display the file.
+        Not implemented in the base class.
+        """
+        raise NotImplementedError
+
+    def save_image(self, image):
+        """Save to temporary file and return filename."""
+        return image._dump(format=self.get_format(image), **self.options)
+
+    def show_image(self, image, **options):
+        """Display the given image."""
+        return self.show_file(self.save_image(image), **options)
+
+    def show_file(self, path, **options):
+        """
+        Display given file.
+        """
+        os.system(self.get_command(path, **options))  # nosec
+        return 1
+
+
+# --------------------------------------------------------------------
+
+
+class WindowsViewer(Viewer):
+    """The default viewer on Windows is the default system application for PNG files."""
+
+    format = "PNG"
+    options = {"compress_level": 1, "save_all": True}
+
+    def get_command(self, file, **options):
+        return (
+            f'start "Pillow" /WAIT "{file}" '
+            "&& ping -n 4 127.0.0.1 >NUL "
+            f'&& del /f "{file}"'
+        )
+
+
+if sys.platform == "win32":
+    register(WindowsViewer)
+
+
+class MacViewer(Viewer):
+    """The default viewer on macOS using ``Preview.app``."""
+
+    format = "PNG"
+    options = {"compress_level": 1, "save_all": True}
+
+    def get_command(self, file, **options):
+        # on darwin open returns immediately resulting in the temp
+        # file removal while app is opening
+        command = "open -a Preview.app"
+        command = f"({command} {quote(file)}; sleep 20; rm -f {quote(file)})&"
+        return command
+
+    def show_file(self, path, **options):
+        """
+        Display given file.
+        """
+        subprocess.call(["open", "-a", "Preview.app", path])
+        executable = sys.executable or shutil.which("python3")
+        if executable:
+            subprocess.Popen(
+                [
+                    executable,
+                    "-c",
+                    "import os, sys, time; time.sleep(20); os.remove(sys.argv[1])",
+                    path,
+                ]
+            )
+        return 1
+
+
+if sys.platform == "darwin":
+    register(MacViewer)
+
+
+class UnixViewer(Viewer):
+    format = "PNG"
+    options = {"compress_level": 1, "save_all": True}
+
+    def get_command(self, file, **options):
+        command = self.get_command_ex(file, **options)[0]
+        return f"({command} {quote(file)}"
+
+
+class XDGViewer(UnixViewer):
+    """
+    The freedesktop.org ``xdg-open`` command.
+    """
+
+    def get_command_ex(self, file, **options):
+        command = executable = "xdg-open"
+        return command, executable
+
+    def show_file(self, path, **options):
+        """
+        Display given file.
+        """
+        subprocess.Popen(["xdg-open", path])
+        return 1
+
+
+class DisplayViewer(UnixViewer):
+    """
+    The ImageMagick ``display`` command.
+    This viewer supports the ``title`` parameter.
+    """
+
+    def get_command_ex(self, file, title=None, **options):
+        command = executable = "display"
+        if title:
+            command += f" -title {quote(title)}"
+        return command, executable
+
+    def show_file(self, path, **options):
+        """
+        Display given file.
+        """
+        args = ["display"]
+        title = options.get("title")
+        if title:
+            args += ["-title", title]
+        args.append(path)
+
+        subprocess.Popen(args)
+        return 1
+
+
+class GmDisplayViewer(UnixViewer):
+    """The GraphicsMagick ``gm display`` command."""
+
+    def get_command_ex(self, file, **options):
+        executable = "gm"
+        command = "gm display"
+        return command, executable
+
+    def show_file(self, path, **options):
+        """
+        Display given file.
+        """
+        subprocess.Popen(["gm", "display", path])
+        return 1
+
+
+class EogViewer(UnixViewer):
+    """The GNOME Image Viewer ``eog`` command."""
+
+    def get_command_ex(self, file, **options):
+        executable = "eog"
+        command = "eog -n"
+        return command, executable
+
+    def show_file(self, path, **options):
+        """
+        Display given file.
+        """
+        subprocess.Popen(["eog", "-n", path])
+        return 1
+
+
+class XVViewer(UnixViewer):
+    """
+    The X Viewer ``xv`` command.
+    This viewer supports the ``title`` parameter.
+    """
+
+    def get_command_ex(self, file, title=None, **options):
+        # note: xv is pretty outdated.  most modern systems have
+        # imagemagick's display command instead.
+        command = executable = "xv"
+        if title:
+            command += f" -name {quote(title)}"
+        return command, executable
+
+    def show_file(self, path, **options):
+        """
+        Display given file.
+        """
+        args = ["xv"]
+        title = options.get("title")
+        if title:
+            args += ["-name", title]
+        args.append(path)
+
+        subprocess.Popen(args)
+        return 1
+
+
+if sys.platform not in ("win32", "darwin"):  # unixoids
+    if shutil.which("xdg-open"):
+        register(XDGViewer)
+    if shutil.which("display"):
+        register(DisplayViewer)
+    if shutil.which("gm"):
+        register(GmDisplayViewer)
+    if shutil.which("eog"):
+        register(EogViewer)
+    if shutil.which("xv"):
+        register(XVViewer)
+
+
+class IPythonViewer(Viewer):
+    """The viewer for IPython frontends."""
+
+    def show_image(self, image, **options):
+        ipython_display(image)
+        return 1
+
+
+try:
+    from IPython.display import display as ipython_display
+except ImportError:
+    pass
+else:
+    register(IPythonViewer)
+
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print("Syntax: python3 ImageShow.py imagefile [title]")
+        sys.exit()
+
+    with Image.open(sys.argv[1]) as im:
+        print(show(im, *sys.argv[2:]))

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageStat.py

@@ -0,0 +1,148 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# global image statistics
+#
+# History:
+# 1996-04-05 fl   Created
+# 1997-05-21 fl   Added mask; added rms, var, stddev attributes
+# 1997-08-05 fl   Added median
+# 1998-07-05 hk   Fixed integer overflow error
+#
+# Notes:
+# This class shows how to implement delayed evaluation of attributes.
+# To get a certain value, simply access the corresponding attribute.
+# The __getattr__ dispatcher takes care of the rest.
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1996-97.
+#
+# See the README file for information on usage and redistribution.
+#
+
+import functools
+import math
+import operator
+
+
+class Stat:
+    def __init__(self, image_or_list, mask=None):
+        try:
+            if mask:
+                self.h = image_or_list.histogram(mask)
+            else:
+                self.h = image_or_list.histogram()
+        except AttributeError:
+            self.h = image_or_list  # assume it to be a histogram list
+        if not isinstance(self.h, list):
+            msg = "first argument must be image or list"
+            raise TypeError(msg)
+        self.bands = list(range(len(self.h) // 256))
+
+    def __getattr__(self, id):
+        """Calculate missing attribute"""
+        if id[:4] == "_get":
+            raise AttributeError(id)
+        # calculate missing attribute
+        v = getattr(self, "_get" + id)()
+        setattr(self, id, v)
+        return v
+
+    def _getextrema(self):
+        """Get min/max values for each band in the image"""
+
+        def minmax(histogram):
+            n = 255
+            x = 0
+            for i in range(256):
+                if histogram[i]:
+                    n = min(n, i)
+                    x = max(x, i)
+            return n, x  # returns (255, 0) if there's no data in the histogram
+
+        v = []
+        for i in range(0, len(self.h), 256):
+            v.append(minmax(self.h[i:]))
+        return v
+
+    def _getcount(self):
+        """Get total number of pixels in each layer"""
+
+        v = []
+        for i in range(0, len(self.h), 256):
+            v.append(functools.reduce(operator.add, self.h[i : i + 256]))
+        return v
+
+    def _getsum(self):
+        """Get sum of all pixels in each layer"""
+
+        v = []
+        for i in range(0, len(self.h), 256):
+            layer_sum = 0.0
+            for j in range(256):
+                layer_sum += j * self.h[i + j]
+            v.append(layer_sum)
+        return v
+
+    def _getsum2(self):
+        """Get squared sum of all pixels in each layer"""
+
+        v = []
+        for i in range(0, len(self.h), 256):
+            sum2 = 0.0
+            for j in range(256):
+                sum2 += (j**2) * float(self.h[i + j])
+            v.append(sum2)
+        return v
+
+    def _getmean(self):
+        """Get average pixel level for each layer"""
+
+        v = []
+        for i in self.bands:
+            v.append(self.sum[i] / self.count[i])
+        return v
+
+    def _getmedian(self):
+        """Get median pixel level for each layer"""
+
+        v = []
+        for i in self.bands:
+            s = 0
+            half = self.count[i] // 2
+            b = i * 256
+            for j in range(256):
+                s = s + self.h[b + j]
+                if s > half:
+                    break
+            v.append(j)
+        return v
+
+    def _getrms(self):
+        """Get RMS for each layer"""
+
+        v = []
+        for i in self.bands:
+            v.append(math.sqrt(self.sum2[i] / self.count[i]))
+        return v
+
+    def _getvar(self):
+        """Get variance for each layer"""
+
+        v = []
+        for i in self.bands:
+            n = self.count[i]
+            v.append((self.sum2[i] - (self.sum[i] ** 2.0) / n) / n)
+        return v
+
+    def _getstddev(self):
+        """Get standard deviation for each layer"""
+
+        v = []
+        for i in self.bands:
+            v.append(math.sqrt(self.var[i]))
+        return v
+
+
+Global = Stat  # compatibility

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageTk.py

@@ -0,0 +1,283 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# a Tk display interface
+#
+# History:
+# 96-04-08 fl   Created
+# 96-09-06 fl   Added getimage method
+# 96-11-01 fl   Rewritten, removed image attribute and crop method
+# 97-05-09 fl   Use PyImagingPaste method instead of image type
+# 97-05-12 fl   Minor tweaks to match the IFUNC95 interface
+# 97-05-17 fl   Support the "pilbitmap" booster patch
+# 97-06-05 fl   Added file= and data= argument to image constructors
+# 98-03-09 fl   Added width and height methods to Image classes
+# 98-07-02 fl   Use default mode for "P" images without palette attribute
+# 98-07-02 fl   Explicitly destroy Tkinter image objects
+# 99-07-24 fl   Support multiple Tk interpreters (from Greg Couch)
+# 99-07-26 fl   Automatically hook into Tkinter (if possible)
+# 99-08-15 fl   Hook uses _imagingtk instead of _imaging
+#
+# Copyright (c) 1997-1999 by Secret Labs AB
+# Copyright (c) 1996-1997 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import tkinter
+from io import BytesIO
+
+from . import Image
+
+# --------------------------------------------------------------------
+# Check for Tkinter interface hooks
+
+_pilbitmap_ok = None
+
+
+def _pilbitmap_check():
+    global _pilbitmap_ok
+    if _pilbitmap_ok is None:
+        try:
+            im = Image.new("1", (1, 1))
+            tkinter.BitmapImage(data=f"PIL:{im.im.id}")
+            _pilbitmap_ok = 1
+        except tkinter.TclError:
+            _pilbitmap_ok = 0
+    return _pilbitmap_ok
+
+
+def _get_image_from_kw(kw):
+    source = None
+    if "file" in kw:
+        source = kw.pop("file")
+    elif "data" in kw:
+        source = BytesIO(kw.pop("data"))
+    if source:
+        return Image.open(source)
+
+
+def _pyimagingtkcall(command, photo, id):
+    tk = photo.tk
+    try:
+        tk.call(command, photo, id)
+    except tkinter.TclError:
+        # activate Tkinter hook
+        # may raise an error if it cannot attach to Tkinter
+        from . import _imagingtk
+
+        _imagingtk.tkinit(tk.interpaddr())
+        tk.call(command, photo, id)
+
+
+# --------------------------------------------------------------------
+# PhotoImage
+
+
+class PhotoImage:
+    """
+    A Tkinter-compatible photo image.  This can be used
+    everywhere Tkinter expects an image object.  If the image is an RGBA
+    image, pixels having alpha 0 are treated as transparent.
+
+    The constructor takes either a PIL image, or a mode and a size.
+    Alternatively, you can use the ``file`` or ``data`` options to initialize
+    the photo image object.
+
+    :param image: Either a PIL image, or a mode string.  If a mode string is
+                  used, a size must also be given.
+    :param size: If the first argument is a mode string, this defines the size
+                 of the image.
+    :keyword file: A filename to load the image from (using
+                   ``Image.open(file)``).
+    :keyword data: An 8-bit string containing image data (as loaded from an
+                   image file).
+    """
+
+    def __init__(self, image=None, size=None, **kw):
+        # Tk compatibility: file or data
+        if image is None:
+            image = _get_image_from_kw(kw)
+
+        if hasattr(image, "mode") and hasattr(image, "size"):
+            # got an image instead of a mode
+            mode = image.mode
+            if mode == "P":
+                # palette mapped data
+                image.apply_transparency()
+                image.load()
+                try:
+                    mode = image.palette.mode
+                except AttributeError:
+                    mode = "RGB"  # default
+            size = image.size
+            kw["width"], kw["height"] = size
+        else:
+            mode = image
+            image = None
+
+        if mode not in ["1", "L", "RGB", "RGBA"]:
+            mode = Image.getmodebase(mode)
+
+        self.__mode = mode
+        self.__size = size
+        self.__photo = tkinter.PhotoImage(**kw)
+        self.tk = self.__photo.tk
+        if image:
+            self.paste(image)
+
+    def __del__(self):
+        name = self.__photo.name
+        self.__photo.name = None
+        try:
+            self.__photo.tk.call("image", "delete", name)
+        except Exception:
+            pass  # ignore internal errors
+
+    def __str__(self):
+        """
+        Get the Tkinter photo image identifier.  This method is automatically
+        called by Tkinter whenever a PhotoImage object is passed to a Tkinter
+        method.
+
+        :return: A Tkinter photo image identifier (a string).
+        """
+        return str(self.__photo)
+
+    def width(self):
+        """
+        Get the width of the image.
+
+        :return: The width, in pixels.
+        """
+        return self.__size[0]
+
+    def height(self):
+        """
+        Get the height of the image.
+
+        :return: The height, in pixels.
+        """
+        return self.__size[1]
+
+    def paste(self, im):
+        """
+        Paste a PIL image into the photo image.  Note that this can
+        be very slow if the photo image is displayed.
+
+        :param im: A PIL image. The size must match the target region.  If the
+                   mode does not match, the image is converted to the mode of
+                   the bitmap image.
+        """
+        # convert to blittable
+        im.load()
+        image = im.im
+        if image.isblock() and im.mode == self.__mode:
+            block = image
+        else:
+            block = image.new_block(self.__mode, im.size)
+            image.convert2(block, image)  # convert directly between buffers
+
+        _pyimagingtkcall("PyImagingPhoto", self.__photo, block.id)
+
+
+# --------------------------------------------------------------------
+# BitmapImage
+
+
+class BitmapImage:
+    """
+    A Tkinter-compatible bitmap image.  This can be used everywhere Tkinter
+    expects an image object.
+
+    The given image must have mode "1".  Pixels having value 0 are treated as
+    transparent.  Options, if any, are passed on to Tkinter.  The most commonly
+    used option is ``foreground``, which is used to specify the color for the
+    non-transparent parts.  See the Tkinter documentation for information on
+    how to specify colours.
+
+    :param image: A PIL image.
+    """
+
+    def __init__(self, image=None, **kw):
+        # Tk compatibility: file or data
+        if image is None:
+            image = _get_image_from_kw(kw)
+
+        self.__mode = image.mode
+        self.__size = image.size
+
+        if _pilbitmap_check():
+            # fast way (requires the pilbitmap booster patch)
+            image.load()
+            kw["data"] = f"PIL:{image.im.id}"
+            self.__im = image  # must keep a reference
+        else:
+            # slow but safe way
+            kw["data"] = image.tobitmap()
+        self.__photo = tkinter.BitmapImage(**kw)
+
+    def __del__(self):
+        name = self.__photo.name
+        self.__photo.name = None
+        try:
+            self.__photo.tk.call("image", "delete", name)
+        except Exception:
+            pass  # ignore internal errors
+
+    def width(self):
+        """
+        Get the width of the image.
+
+        :return: The width, in pixels.
+        """
+        return self.__size[0]
+
+    def height(self):
+        """
+        Get the height of the image.
+
+        :return: The height, in pixels.
+        """
+        return self.__size[1]
+
+    def __str__(self):
+        """
+        Get the Tkinter bitmap image identifier.  This method is automatically
+        called by Tkinter whenever a BitmapImage object is passed to a Tkinter
+        method.
+
+        :return: A Tkinter bitmap image identifier (a string).
+        """
+        return str(self.__photo)
+
+
+def getimage(photo):
+    """Copies the contents of a PhotoImage to a PIL image memory."""
+    im = Image.new("RGBA", (photo.width(), photo.height()))
+    block = im.im
+
+    _pyimagingtkcall("PyImagingPhotoGet", photo, block.id)
+
+    return im
+
+
+def _show(image, title):
+    """Helper for the Image.show method."""
+
+    class UI(tkinter.Label):
+        def __init__(self, master, im):
+            if im.mode == "1":
+                self.image = BitmapImage(im, foreground="white", master=master)
+            else:
+                self.image = PhotoImage(im, master=master)
+            super().__init__(master, image=self.image, bg="black", bd=0)
+
+    if not tkinter._default_root:
+        msg = "tkinter not initialized"
+        raise OSError(msg)
+    top = tkinter.Toplevel()
+    if title:
+        top.title(title)
+    UI(top, image).pack()

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageTransform.py

@@ -0,0 +1,102 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# transform wrappers
+#
+# History:
+# 2002-04-08 fl   Created
+#
+# Copyright (c) 2002 by Secret Labs AB
+# Copyright (c) 2002 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+from . import Image
+
+
+class Transform(Image.ImageTransformHandler):
+    def __init__(self, data):
+        self.data = data
+
+    def getdata(self):
+        return self.method, self.data
+
+    def transform(self, size, image, **options):
+        # can be overridden
+        method, data = self.getdata()
+        return image.transform(size, method, data, **options)
+
+
+class AffineTransform(Transform):
+    """
+    Define an affine image transform.
+
+    This function takes a 6-tuple (a, b, c, d, e, f) which contain the first
+    two rows from an affine transform matrix. For each pixel (x, y) in the
+    output image, the new value is taken from a position (a x + b y + c,
+    d x + e y + f) in the input image, rounded to nearest pixel.
+
+    This function can be used to scale, translate, rotate, and shear the
+    original image.
+
+    See :py:meth:`~PIL.Image.Image.transform`
+
+    :param matrix: A 6-tuple (a, b, c, d, e, f) containing the first two rows
+        from an affine transform matrix.
+    """
+
+    method = Image.Transform.AFFINE
+
+
+class ExtentTransform(Transform):
+    """
+    Define a transform to extract a subregion from an image.
+
+    Maps a rectangle (defined by two corners) from the image to a rectangle of
+    the given size. The resulting image will contain data sampled from between
+    the corners, such that (x0, y0) in the input image will end up at (0,0) in
+    the output image, and (x1, y1) at size.
+
+    This method can be used to crop, stretch, shrink, or mirror an arbitrary
+    rectangle in the current image. It is slightly slower than crop, but about
+    as fast as a corresponding resize operation.
+
+    See :py:meth:`~PIL.Image.Image.transform`
+
+    :param bbox: A 4-tuple (x0, y0, x1, y1) which specifies two points in the
+        input image's coordinate system. See :ref:`coordinate-system`.
+    """
+
+    method = Image.Transform.EXTENT
+
+
+class QuadTransform(Transform):
+    """
+    Define a quad image transform.
+
+    Maps a quadrilateral (a region defined by four corners) from the image to a
+    rectangle of the given size.
+
+    See :py:meth:`~PIL.Image.Image.transform`
+
+    :param xy: An 8-tuple (x0, y0, x1, y1, x2, y2, x3, y3) which contain the
+        upper left, lower left, lower right, and upper right corner of the
+        source quadrilateral.
+    """
+
+    method = Image.Transform.QUAD
+
+
+class MeshTransform(Transform):
+    """
+    Define a mesh image transform.  A mesh transform consists of one or more
+    individual quad transforms.
+
+    See :py:meth:`~PIL.Image.Image.transform`
+
+    :param data: A list of (bbox, quad) tuples.
+    """
+
+    method = Image.Transform.MESH

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImageWin.py

@@ -0,0 +1,230 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# a Windows DIB display interface
+#
+# History:
+# 1996-05-20 fl   Created
+# 1996-09-20 fl   Fixed subregion exposure
+# 1997-09-21 fl   Added draw primitive (for tzPrint)
+# 2003-05-21 fl   Added experimental Window/ImageWindow classes
+# 2003-09-05 fl   Added fromstring/tostring methods
+#
+# Copyright (c) Secret Labs AB 1997-2003.
+# Copyright (c) Fredrik Lundh 1996-2003.
+#
+# See the README file for information on usage and redistribution.
+#
+
+from . import Image
+
+
+class HDC:
+    """
+    Wraps an HDC integer. The resulting object can be passed to the
+    :py:meth:`~PIL.ImageWin.Dib.draw` and :py:meth:`~PIL.ImageWin.Dib.expose`
+    methods.
+    """
+
+    def __init__(self, dc):
+        self.dc = dc
+
+    def __int__(self):
+        return self.dc
+
+
+class HWND:
+    """
+    Wraps an HWND integer. The resulting object can be passed to the
+    :py:meth:`~PIL.ImageWin.Dib.draw` and :py:meth:`~PIL.ImageWin.Dib.expose`
+    methods, instead of a DC.
+    """
+
+    def __init__(self, wnd):
+        self.wnd = wnd
+
+    def __int__(self):
+        return self.wnd
+
+
+class Dib:
+    """
+    A Windows bitmap with the given mode and size.  The mode can be one of "1",
+    "L", "P", or "RGB".
+
+    If the display requires a palette, this constructor creates a suitable
+    palette and associates it with the image. For an "L" image, 128 greylevels
+    are allocated. For an "RGB" image, a 6x6x6 colour cube is used, together
+    with 20 greylevels.
+
+    To make sure that palettes work properly under Windows, you must call the
+    ``palette`` method upon certain events from Windows.
+
+    :param image: Either a PIL image, or a mode string. If a mode string is
+                  used, a size must also be given.  The mode can be one of "1",
+                  "L", "P", or "RGB".
+    :param size: If the first argument is a mode string, this
+                 defines the size of the image.
+    """
+
+    def __init__(self, image, size=None):
+        if hasattr(image, "mode") and hasattr(image, "size"):
+            mode = image.mode
+            size = image.size
+        else:
+            mode = image
+            image = None
+        if mode not in ["1", "L", "P", "RGB"]:
+            mode = Image.getmodebase(mode)
+        self.image = Image.core.display(mode, size)
+        self.mode = mode
+        self.size = size
+        if image:
+            self.paste(image)
+
+    def expose(self, handle):
+        """
+        Copy the bitmap contents to a device context.
+
+        :param handle: Device context (HDC), cast to a Python integer, or an
+                       HDC or HWND instance.  In PythonWin, you can use
+                       ``CDC.GetHandleAttrib()`` to get a suitable handle.
+        """
+        if isinstance(handle, HWND):
+            dc = self.image.getdc(handle)
+            try:
+                result = self.image.expose(dc)
+            finally:
+                self.image.releasedc(handle, dc)
+        else:
+            result = self.image.expose(handle)
+        return result
+
+    def draw(self, handle, dst, src=None):
+        """
+        Same as expose, but allows you to specify where to draw the image, and
+        what part of it to draw.
+
+        The destination and source areas are given as 4-tuple rectangles. If
+        the source is omitted, the entire image is copied. If the source and
+        the destination have different sizes, the image is resized as
+        necessary.
+        """
+        if not src:
+            src = (0, 0) + self.size
+        if isinstance(handle, HWND):
+            dc = self.image.getdc(handle)
+            try:
+                result = self.image.draw(dc, dst, src)
+            finally:
+                self.image.releasedc(handle, dc)
+        else:
+            result = self.image.draw(handle, dst, src)
+        return result
+
+    def query_palette(self, handle):
+        """
+        Installs the palette associated with the image in the given device
+        context.
+
+        This method should be called upon **QUERYNEWPALETTE** and
+        **PALETTECHANGED** events from Windows. If this method returns a
+        non-zero value, one or more display palette entries were changed, and
+        the image should be redrawn.
+
+        :param handle: Device context (HDC), cast to a Python integer, or an
+                       HDC or HWND instance.
+        :return: A true value if one or more entries were changed (this
+                 indicates that the image should be redrawn).
+        """
+        if isinstance(handle, HWND):
+            handle = self.image.getdc(handle)
+            try:
+                result = self.image.query_palette(handle)
+            finally:
+                self.image.releasedc(handle, handle)
+        else:
+            result = self.image.query_palette(handle)
+        return result
+
+    def paste(self, im, box=None):
+        """
+        Paste a PIL image into the bitmap image.
+
+        :param im: A PIL image.  The size must match the target region.
+                   If the mode does not match, the image is converted to the
+                   mode of the bitmap image.
+        :param box: A 4-tuple defining the left, upper, right, and
+                    lower pixel coordinate.  See :ref:`coordinate-system`. If
+                    None is given instead of a tuple, all of the image is
+                    assumed.
+        """
+        im.load()
+        if self.mode != im.mode:
+            im = im.convert(self.mode)
+        if box:
+            self.image.paste(im.im, box)
+        else:
+            self.image.paste(im.im)
+
+    def frombytes(self, buffer):
+        """
+        Load display memory contents from byte data.
+
+        :param buffer: A buffer containing display data (usually
+                       data returned from :py:func:`~PIL.ImageWin.Dib.tobytes`)
+        """
+        return self.image.frombytes(buffer)
+
+    def tobytes(self):
+        """
+        Copy display memory contents to bytes object.
+
+        :return: A bytes object containing display data.
+        """
+        return self.image.tobytes()
+
+
+class Window:
+    """Create a Window with the given title size."""
+
+    def __init__(self, title="PIL", width=None, height=None):
+        self.hwnd = Image.core.createwindow(
+            title, self.__dispatcher, width or 0, height or 0
+        )
+
+    def __dispatcher(self, action, *args):
+        return getattr(self, "ui_handle_" + action)(*args)
+
+    def ui_handle_clear(self, dc, x0, y0, x1, y1):
+        pass
+
+    def ui_handle_damage(self, x0, y0, x1, y1):
+        pass
+
+    def ui_handle_destroy(self):
+        pass
+
+    def ui_handle_repair(self, dc, x0, y0, x1, y1):
+        pass
+
+    def ui_handle_resize(self, width, height):
+        pass
+
+    def mainloop(self):
+        Image.core.eventloop()
+
+
+class ImageWindow(Window):
+    """Create an image window which displays the given image."""
+
+    def __init__(self, image, title="PIL"):
+        if not isinstance(image, Dib):
+            image = Dib(image)
+        self.image = image
+        width, height = image.size
+        super().__init__(title, width=width, height=height)
+
+    def ui_handle_repair(self, dc, x0, y0, x1, y1):
+        self.image.draw(dc, (x0, y0, x1, y1))

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/ImtImagePlugin.py

@@ -0,0 +1,101 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# IM Tools support for PIL
+#
+# history:
+# 1996-05-27 fl   Created (read 8-bit images only)
+# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.2)
+#
+# Copyright (c) Secret Labs AB 1997-2001.
+# Copyright (c) Fredrik Lundh 1996-2001.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+import re
+
+from . import Image, ImageFile
+
+#
+# --------------------------------------------------------------------
+
+field = re.compile(rb"([a-z]*) ([^ \r\n]*)")
+
+
+##
+# Image plugin for IM Tools images.
+
+
+class ImtImageFile(ImageFile.ImageFile):
+    format = "IMT"
+    format_description = "IM Tools"
+
+    def _open(self):
+        # Quick rejection: if there's not a LF among the first
+        # 100 bytes, this is (probably) not a text header.
+
+        buffer = self.fp.read(100)
+        if b"\n" not in buffer:
+            msg = "not an IM file"
+            raise SyntaxError(msg)
+
+        xsize = ysize = 0
+
+        while True:
+            if buffer:
+                s = buffer[:1]
+                buffer = buffer[1:]
+            else:
+                s = self.fp.read(1)
+            if not s:
+                break
+
+            if s == b"\x0C":
+                # image data begins
+                self.tile = [
+                    (
+                        "raw",
+                        (0, 0) + self.size,
+                        self.fp.tell() - len(buffer),
+                        (self.mode, 0, 1),
+                    )
+                ]
+
+                break
+
+            else:
+                # read key/value pair
+                if b"\n" not in buffer:
+                    buffer += self.fp.read(100)
+                lines = buffer.split(b"\n")
+                s += lines.pop(0)
+                buffer = b"\n".join(lines)
+                if len(s) == 1 or len(s) > 100:
+                    break
+                if s[0] == ord(b"*"):
+                    continue  # comment
+
+                m = field.match(s)
+                if not m:
+                    break
+                k, v = m.group(1, 2)
+                if k == b"width":
+                    xsize = int(v)
+                    self._size = xsize, ysize
+                elif k == b"height":
+                    ysize = int(v)
+                    self._size = xsize, ysize
+                elif k == b"pixel" and v == b"n8":
+                    self.mode = "L"
+
+
+#
+# --------------------------------------------------------------------
+
+Image.register_open(ImtImageFile.format, ImtImageFile)
+
+#
+# no extension registered (".im" is simply too common)

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/IptcImagePlugin.py

@@ -0,0 +1,230 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# IPTC/NAA file handling
+#
+# history:
+# 1995-10-01 fl   Created
+# 1998-03-09 fl   Cleaned up and added to PIL
+# 2002-06-18 fl   Added getiptcinfo helper
+#
+# Copyright (c) Secret Labs AB 1997-2002.
+# Copyright (c) Fredrik Lundh 1995.
+#
+# See the README file for information on usage and redistribution.
+#
+import os
+import tempfile
+
+from . import Image, ImageFile
+from ._binary import i8
+from ._binary import i16be as i16
+from ._binary import i32be as i32
+from ._binary import o8
+
+COMPRESSION = {1: "raw", 5: "jpeg"}
+
+PAD = o8(0) * 4
+
+
+#
+# Helpers
+
+
+def i(c):
+    return i32((PAD + c)[-4:])
+
+
+def dump(c):
+    for i in c:
+        print("%02x" % i8(i), end=" ")
+    print()
+
+
+##
+# Image plugin for IPTC/NAA datastreams.  To read IPTC/NAA fields
+# from TIFF and JPEG files, use the <b>getiptcinfo</b> function.
+
+
+class IptcImageFile(ImageFile.ImageFile):
+    format = "IPTC"
+    format_description = "IPTC/NAA"
+
+    def getint(self, key):
+        return i(self.info[key])
+
+    def field(self):
+        #
+        # get a IPTC field header
+        s = self.fp.read(5)
+        if not len(s):
+            return None, 0
+
+        tag = s[1], s[2]
+
+        # syntax
+        if s[0] != 0x1C or tag[0] < 1 or tag[0] > 9:
+            msg = "invalid IPTC/NAA file"
+            raise SyntaxError(msg)
+
+        # field size
+        size = s[3]
+        if size > 132:
+            msg = "illegal field length in IPTC/NAA file"
+            raise OSError(msg)
+        elif size == 128:
+            size = 0
+        elif size > 128:
+            size = i(self.fp.read(size - 128))
+        else:
+            size = i16(s, 3)
+
+        return tag, size
+
+    def _open(self):
+        # load descriptive fields
+        while True:
+            offset = self.fp.tell()
+            tag, size = self.field()
+            if not tag or tag == (8, 10):
+                break
+            if size:
+                tagdata = self.fp.read(size)
+            else:
+                tagdata = None
+            if tag in self.info:
+                if isinstance(self.info[tag], list):
+                    self.info[tag].append(tagdata)
+                else:
+                    self.info[tag] = [self.info[tag], tagdata]
+            else:
+                self.info[tag] = tagdata
+
+        # mode
+        layers = i8(self.info[(3, 60)][0])
+        component = i8(self.info[(3, 60)][1])
+        if (3, 65) in self.info:
+            id = i8(self.info[(3, 65)][0]) - 1
+        else:
+            id = 0
+        if layers == 1 and not component:
+            self.mode = "L"
+        elif layers == 3 and component:
+            self.mode = "RGB"[id]
+        elif layers == 4 and component:
+            self.mode = "CMYK"[id]
+
+        # size
+        self._size = self.getint((3, 20)), self.getint((3, 30))
+
+        # compression
+        try:
+            compression = COMPRESSION[self.getint((3, 120))]
+        except KeyError as e:
+            msg = "Unknown IPTC image compression"
+            raise OSError(msg) from e
+
+        # tile
+        if tag == (8, 10):
+            self.tile = [
+                ("iptc", (compression, offset), (0, 0, self.size[0], self.size[1]))
+            ]
+
+    def load(self):
+        if len(self.tile) != 1 or self.tile[0][0] != "iptc":
+            return ImageFile.ImageFile.load(self)
+
+        type, tile, box = self.tile[0]
+
+        encoding, offset = tile
+
+        self.fp.seek(offset)
+
+        # Copy image data to temporary file
+        o_fd, outfile = tempfile.mkstemp(text=False)
+        o = os.fdopen(o_fd)
+        if encoding == "raw":
+            # To simplify access to the extracted file,
+            # prepend a PPM header
+            o.write("P5\n%d %d\n255\n" % self.size)
+        while True:
+            type, size = self.field()
+            if type != (8, 10):
+                break
+            while size > 0:
+                s = self.fp.read(min(size, 8192))
+                if not s:
+                    break
+                o.write(s)
+                size -= len(s)
+        o.close()
+
+        try:
+            with Image.open(outfile) as _im:
+                _im.load()
+                self.im = _im.im
+        finally:
+            try:
+                os.unlink(outfile)
+            except OSError:
+                pass
+
+
+Image.register_open(IptcImageFile.format, IptcImageFile)
+
+Image.register_extension(IptcImageFile.format, ".iim")
+
+
+def getiptcinfo(im):
+    """
+    Get IPTC information from TIFF, JPEG, or IPTC file.
+
+    :param im: An image containing IPTC data.
+    :returns: A dictionary containing IPTC information, or None if
+        no IPTC information block was found.
+    """
+    import io
+
+    from . import JpegImagePlugin, TiffImagePlugin
+
+    data = None
+
+    if isinstance(im, IptcImageFile):
+        # return info dictionary right away
+        return im.info
+
+    elif isinstance(im, JpegImagePlugin.JpegImageFile):
+        # extract the IPTC/NAA resource
+        photoshop = im.info.get("photoshop")
+        if photoshop:
+            data = photoshop.get(0x0404)
+
+    elif isinstance(im, TiffImagePlugin.TiffImageFile):
+        # get raw data from the IPTC/NAA tag (PhotoShop tags the data
+        # as 4-byte integers, so we cannot use the get method...)
+        try:
+            data = im.tag.tagdata[TiffImagePlugin.IPTC_NAA_CHUNK]
+        except (AttributeError, KeyError):
+            pass
+
+    if data is None:
+        return None  # no properties
+
+    # create an IptcImagePlugin object without initializing it
+    class FakeImage:
+        pass
+
+    im = FakeImage()
+    im.__class__ = IptcImageFile
+
+    # parse the IPTC information chunk
+    im.info = {}
+    im.fp = io.BytesIO(data)
+
+    try:
+        im._open()
+    except (IndexError, KeyError):
+        pass  # expected failure
+
+    return im.info

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/Jpeg2KImagePlugin.py

@@ -0,0 +1,399 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# JPEG2000 file handling
+#
+# History:
+# 2014-03-12 ajh  Created
+# 2021-06-30 rogermb  Extract dpi information from the 'resc' header box
+#
+# Copyright (c) 2014 Coriolis Systems Limited
+# Copyright (c) 2014 Alastair Houghton
+#
+# See the README file for information on usage and redistribution.
+#
+import io
+import os
+import struct
+
+from . import Image, ImageFile, _binary
+
+
+class BoxReader:
+    """
+    A small helper class to read fields stored in JPEG2000 header boxes
+    and to easily step into and read sub-boxes.
+    """
+
+    def __init__(self, fp, length=-1):
+        self.fp = fp
+        self.has_length = length >= 0
+        self.length = length
+        self.remaining_in_box = -1
+
+    def _can_read(self, num_bytes):
+        if self.has_length and self.fp.tell() + num_bytes > self.length:
+            # Outside box: ensure we don't read past the known file length
+            return False
+        if self.remaining_in_box >= 0:
+            # Inside box contents: ensure read does not go past box boundaries
+            return num_bytes <= self.remaining_in_box
+        else:
+            return True  # No length known, just read
+
+    def _read_bytes(self, num_bytes):
+        if not self._can_read(num_bytes):
+            msg = "Not enough data in header"
+            raise SyntaxError(msg)
+
+        data = self.fp.read(num_bytes)
+        if len(data) < num_bytes:
+            msg = f"Expected to read {num_bytes} bytes but only got {len(data)}."
+            raise OSError(msg)
+
+        if self.remaining_in_box > 0:
+            self.remaining_in_box -= num_bytes
+        return data
+
+    def read_fields(self, field_format):
+        size = struct.calcsize(field_format)
+        data = self._read_bytes(size)
+        return struct.unpack(field_format, data)
+
+    def read_boxes(self):
+        size = self.remaining_in_box
+        data = self._read_bytes(size)
+        return BoxReader(io.BytesIO(data), size)
+
+    def has_next_box(self):
+        if self.has_length:
+            return self.fp.tell() + self.remaining_in_box < self.length
+        else:
+            return True
+
+    def next_box_type(self):
+        # Skip the rest of the box if it has not been read
+        if self.remaining_in_box > 0:
+            self.fp.seek(self.remaining_in_box, os.SEEK_CUR)
+        self.remaining_in_box = -1
+
+        # Read the length and type of the next box
+        lbox, tbox = self.read_fields(">I4s")
+        if lbox == 1:
+            lbox = self.read_fields(">Q")[0]
+            hlen = 16
+        else:
+            hlen = 8
+
+        if lbox < hlen or not self._can_read(lbox - hlen):
+            msg = "Invalid header length"
+            raise SyntaxError(msg)
+
+        self.remaining_in_box = lbox - hlen
+        return tbox
+
+
+def _parse_codestream(fp):
+    """Parse the JPEG 2000 codestream to extract the size and component
+    count from the SIZ marker segment, returning a PIL (size, mode) tuple."""
+
+    hdr = fp.read(2)
+    lsiz = _binary.i16be(hdr)
+    siz = hdr + fp.read(lsiz - 2)
+    lsiz, rsiz, xsiz, ysiz, xosiz, yosiz, _, _, _, _, csiz = struct.unpack_from(
+        ">HHIIIIIIIIH", siz
+    )
+    ssiz = [None] * csiz
+    xrsiz = [None] * csiz
+    yrsiz = [None] * csiz
+    for i in range(csiz):
+        ssiz[i], xrsiz[i], yrsiz[i] = struct.unpack_from(">BBB", siz, 36 + 3 * i)
+
+    size = (xsiz - xosiz, ysiz - yosiz)
+    if csiz == 1:
+        if (yrsiz[0] & 0x7F) > 8:
+            mode = "I;16"
+        else:
+            mode = "L"
+    elif csiz == 2:
+        mode = "LA"
+    elif csiz == 3:
+        mode = "RGB"
+    elif csiz == 4:
+        mode = "RGBA"
+    else:
+        mode = None
+
+    return size, mode
+
+
+def _res_to_dpi(num, denom, exp):
+    """Convert JPEG2000's (numerator, denominator, exponent-base-10) resolution,
+    calculated as (num / denom) * 10^exp and stored in dots per meter,
+    to floating-point dots per inch."""
+    if denom != 0:
+        return (254 * num * (10**exp)) / (10000 * denom)
+
+
+def _parse_jp2_header(fp):
+    """Parse the JP2 header box to extract size, component count,
+    color space information, and optionally DPI information,
+    returning a (size, mode, mimetype, dpi) tuple."""
+
+    # Find the JP2 header box
+    reader = BoxReader(fp)
+    header = None
+    mimetype = None
+    while reader.has_next_box():
+        tbox = reader.next_box_type()
+
+        if tbox == b"jp2h":
+            header = reader.read_boxes()
+            break
+        elif tbox == b"ftyp":
+            if reader.read_fields(">4s")[0] == b"jpx ":
+                mimetype = "image/jpx"
+
+    size = None
+    mode = None
+    bpc = None
+    nc = None
+    dpi = None  # 2-tuple of DPI info, or None
+
+    while header.has_next_box():
+        tbox = header.next_box_type()
+
+        if tbox == b"ihdr":
+            height, width, nc, bpc = header.read_fields(">IIHB")
+            size = (width, height)
+            if nc == 1 and (bpc & 0x7F) > 8:
+                mode = "I;16"
+            elif nc == 1:
+                mode = "L"
+            elif nc == 2:
+                mode = "LA"
+            elif nc == 3:
+                mode = "RGB"
+            elif nc == 4:
+                mode = "RGBA"
+        elif tbox == b"res ":
+            res = header.read_boxes()
+            while res.has_next_box():
+                tres = res.next_box_type()
+                if tres == b"resc":
+                    vrcn, vrcd, hrcn, hrcd, vrce, hrce = res.read_fields(">HHHHBB")
+                    hres = _res_to_dpi(hrcn, hrcd, hrce)
+                    vres = _res_to_dpi(vrcn, vrcd, vrce)
+                    if hres is not None and vres is not None:
+                        dpi = (hres, vres)
+                    break
+
+    if size is None or mode is None:
+        msg = "Malformed JP2 header"
+        raise SyntaxError(msg)
+
+    return size, mode, mimetype, dpi
+
+
+##
+# Image plugin for JPEG2000 images.
+
+
+class Jpeg2KImageFile(ImageFile.ImageFile):
+    format = "JPEG2000"
+    format_description = "JPEG 2000 (ISO 15444)"
+
+    def _open(self):
+        sig = self.fp.read(4)
+        if sig == b"\xff\x4f\xff\x51":
+            self.codec = "j2k"
+            self._size, self.mode = _parse_codestream(self.fp)
+        else:
+            sig = sig + self.fp.read(8)
+
+            if sig == b"\x00\x00\x00\x0cjP  \x0d\x0a\x87\x0a":
+                self.codec = "jp2"
+                header = _parse_jp2_header(self.fp)
+                self._size, self.mode, self.custom_mimetype, dpi = header
+                if dpi is not None:
+                    self.info["dpi"] = dpi
+                if self.fp.read(12).endswith(b"jp2c\xff\x4f\xff\x51"):
+                    self._parse_comment()
+            else:
+                msg = "not a JPEG 2000 file"
+                raise SyntaxError(msg)
+
+        if self.size is None or self.mode is None:
+            msg = "unable to determine size/mode"
+            raise SyntaxError(msg)
+
+        self._reduce = 0
+        self.layers = 0
+
+        fd = -1
+        length = -1
+
+        try:
+            fd = self.fp.fileno()
+            length = os.fstat(fd).st_size
+        except Exception:
+            fd = -1
+            try:
+                pos = self.fp.tell()
+                self.fp.seek(0, io.SEEK_END)
+                length = self.fp.tell()
+                self.fp.seek(pos)
+            except Exception:
+                length = -1
+
+        self.tile = [
+            (
+                "jpeg2k",
+                (0, 0) + self.size,
+                0,
+                (self.codec, self._reduce, self.layers, fd, length),
+            )
+        ]
+
+    def _parse_comment(self):
+        hdr = self.fp.read(2)
+        length = _binary.i16be(hdr)
+        self.fp.seek(length - 2, os.SEEK_CUR)
+
+        while True:
+            marker = self.fp.read(2)
+            if not marker:
+                break
+            typ = marker[1]
+            if typ in (0x90, 0xD9):
+                # Start of tile or end of codestream
+                break
+            hdr = self.fp.read(2)
+            length = _binary.i16be(hdr)
+            if typ == 0x64:
+                # Comment
+                self.info["comment"] = self.fp.read(length - 2)[2:]
+                break
+            else:
+                self.fp.seek(length - 2, os.SEEK_CUR)
+
+    @property
+    def reduce(self):
+        # https://github.com/python-pillow/Pillow/issues/4343 found that the
+        # new Image 'reduce' method was shadowed by this plugin's 'reduce'
+        # property. This attempts to allow for both scenarios
+        return self._reduce or super().reduce
+
+    @reduce.setter
+    def reduce(self, value):
+        self._reduce = value
+
+    def load(self):
+        if self.tile and self._reduce:
+            power = 1 << self._reduce
+            adjust = power >> 1
+            self._size = (
+                int((self.size[0] + adjust) / power),
+                int((self.size[1] + adjust) / power),
+            )
+
+            # Update the reduce and layers settings
+            t = self.tile[0]
+            t3 = (t[3][0], self._reduce, self.layers, t[3][3], t[3][4])
+            self.tile = [(t[0], (0, 0) + self.size, t[2], t3)]
+
+        return ImageFile.ImageFile.load(self)
+
+
+def _accept(prefix):
+    return (
+        prefix[:4] == b"\xff\x4f\xff\x51"
+        or prefix[:12] == b"\x00\x00\x00\x0cjP  \x0d\x0a\x87\x0a"
+    )
+
+
+# ------------------------------------------------------------
+# Save support
+
+
+def _save(im, fp, filename):
+    # Get the keyword arguments
+    info = im.encoderinfo
+
+    if filename.endswith(".j2k") or info.get("no_jp2", False):
+        kind = "j2k"
+    else:
+        kind = "jp2"
+
+    offset = info.get("offset", None)
+    tile_offset = info.get("tile_offset", None)
+    tile_size = info.get("tile_size", None)
+    quality_mode = info.get("quality_mode", "rates")
+    quality_layers = info.get("quality_layers", None)
+    if quality_layers is not None and not (
+        isinstance(quality_layers, (list, tuple))
+        and all(
+            [
+                isinstance(quality_layer, (int, float))
+                for quality_layer in quality_layers
+            ]
+        )
+    ):
+        msg = "quality_layers must be a sequence of numbers"
+        raise ValueError(msg)
+
+    num_resolutions = info.get("num_resolutions", 0)
+    cblk_size = info.get("codeblock_size", None)
+    precinct_size = info.get("precinct_size", None)
+    irreversible = info.get("irreversible", False)
+    progression = info.get("progression", "LRCP")
+    cinema_mode = info.get("cinema_mode", "no")
+    mct = info.get("mct", 0)
+    signed = info.get("signed", False)
+    comment = info.get("comment")
+    if isinstance(comment, str):
+        comment = comment.encode()
+    plt = info.get("plt", False)
+
+    fd = -1
+    if hasattr(fp, "fileno"):
+        try:
+            fd = fp.fileno()
+        except Exception:
+            fd = -1
+
+    im.encoderconfig = (
+        offset,
+        tile_offset,
+        tile_size,
+        quality_mode,
+        quality_layers,
+        num_resolutions,
+        cblk_size,
+        precinct_size,
+        irreversible,
+        progression,
+        cinema_mode,
+        mct,
+        signed,
+        fd,
+        comment,
+        plt,
+    )
+
+    ImageFile._save(im, fp, [("jpeg2k", (0, 0) + im.size, 0, kind)])
+
+
+# ------------------------------------------------------------
+# Registry stuff
+
+
+Image.register_open(Jpeg2KImageFile.format, Jpeg2KImageFile, _accept)
+Image.register_save(Jpeg2KImageFile.format, _save)
+
+Image.register_extensions(
+    Jpeg2KImageFile.format, [".jp2", ".j2k", ".jpc", ".jpf", ".jpx", ".j2c"]
+)
+
+Image.register_mime(Jpeg2KImageFile.format, "image/jp2")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/JpegImagePlugin.py

@@ -0,0 +1,849 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# JPEG (JFIF) file handling
+#
+# See "Digital Compression and Coding of Continuous-Tone Still Images,
+# Part 1, Requirements and Guidelines" (CCITT T.81 / ISO 10918-1)
+#
+# History:
+# 1995-09-09 fl   Created
+# 1995-09-13 fl   Added full parser
+# 1996-03-25 fl   Added hack to use the IJG command line utilities
+# 1996-05-05 fl   Workaround Photoshop 2.5 CMYK polarity bug
+# 1996-05-28 fl   Added draft support, JFIF version (0.1)
+# 1996-12-30 fl   Added encoder options, added progression property (0.2)
+# 1997-08-27 fl   Save mode 1 images as BW (0.3)
+# 1998-07-12 fl   Added YCbCr to draft and save methods (0.4)
+# 1998-10-19 fl   Don't hang on files using 16-bit DQT's (0.4.1)
+# 2001-04-16 fl   Extract DPI settings from JFIF files (0.4.2)
+# 2002-07-01 fl   Skip pad bytes before markers; identify Exif files (0.4.3)
+# 2003-04-25 fl   Added experimental EXIF decoder (0.5)
+# 2003-06-06 fl   Added experimental EXIF GPSinfo decoder
+# 2003-09-13 fl   Extract COM markers
+# 2009-09-06 fl   Added icc_profile support (from Florian Hoech)
+# 2009-03-06 fl   Changed CMYK handling; always use Adobe polarity (0.6)
+# 2009-03-08 fl   Added subsampling support (from Justin Huff).
+#
+# Copyright (c) 1997-2003 by Secret Labs AB.
+# Copyright (c) 1995-1996 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+import array
+import io
+import math
+import os
+import struct
+import subprocess
+import sys
+import tempfile
+import warnings
+
+from . import Image, ImageFile
+from ._binary import i16be as i16
+from ._binary import i32be as i32
+from ._binary import o8
+from ._binary import o16be as o16
+from .JpegPresets import presets
+
+#
+# Parser
+
+
+def Skip(self, marker):
+    n = i16(self.fp.read(2)) - 2
+    ImageFile._safe_read(self.fp, n)
+
+
+def APP(self, marker):
+    #
+    # Application marker.  Store these in the APP dictionary.
+    # Also look for well-known application markers.
+
+    n = i16(self.fp.read(2)) - 2
+    s = ImageFile._safe_read(self.fp, n)
+
+    app = "APP%d" % (marker & 15)
+
+    self.app[app] = s  # compatibility
+    self.applist.append((app, s))
+
+    if marker == 0xFFE0 and s[:4] == b"JFIF":
+        # extract JFIF information
+        self.info["jfif"] = version = i16(s, 5)  # version
+        self.info["jfif_version"] = divmod(version, 256)
+        # extract JFIF properties
+        try:
+            jfif_unit = s[7]
+            jfif_density = i16(s, 8), i16(s, 10)
+        except Exception:
+            pass
+        else:
+            if jfif_unit == 1:
+                self.info["dpi"] = jfif_density
+            self.info["jfif_unit"] = jfif_unit
+            self.info["jfif_density"] = jfif_density
+    elif marker == 0xFFE1 and s[:5] == b"Exif\0":
+        if "exif" not in self.info:
+            # extract EXIF information (incomplete)
+            self.info["exif"] = s  # FIXME: value will change
+            self._exif_offset = self.fp.tell() - n + 6
+    elif marker == 0xFFE2 and s[:5] == b"FPXR\0":
+        # extract FlashPix information (incomplete)
+        self.info["flashpix"] = s  # FIXME: value will change
+    elif marker == 0xFFE2 and s[:12] == b"ICC_PROFILE\0":
+        # Since an ICC profile can be larger than the maximum size of
+        # a JPEG marker (64K), we need provisions to split it into
+        # multiple markers. The format defined by the ICC specifies
+        # one or more APP2 markers containing the following data:
+        #   Identifying string      ASCII "ICC_PROFILE\0"  (12 bytes)
+        #   Marker sequence number  1, 2, etc (1 byte)
+        #   Number of markers       Total of APP2's used (1 byte)
+        #   Profile data            (remainder of APP2 data)
+        # Decoders should use the marker sequence numbers to
+        # reassemble the profile, rather than assuming that the APP2
+        # markers appear in the correct sequence.
+        self.icclist.append(s)
+    elif marker == 0xFFED and s[:14] == b"Photoshop 3.0\x00":
+        # parse the image resource block
+        offset = 14
+        photoshop = self.info.setdefault("photoshop", {})
+        while s[offset : offset + 4] == b"8BIM":
+            try:
+                offset += 4
+                # resource code
+                code = i16(s, offset)
+                offset += 2
+                # resource name (usually empty)
+                name_len = s[offset]
+                # name = s[offset+1:offset+1+name_len]
+                offset += 1 + name_len
+                offset += offset & 1  # align
+                # resource data block
+                size = i32(s, offset)
+                offset += 4
+                data = s[offset : offset + size]
+                if code == 0x03ED:  # ResolutionInfo
+                    data = {
+                        "XResolution": i32(data, 0) / 65536,
+                        "DisplayedUnitsX": i16(data, 4),
+                        "YResolution": i32(data, 8) / 65536,
+                        "DisplayedUnitsY": i16(data, 12),
+                    }
+                photoshop[code] = data
+                offset += size
+                offset += offset & 1  # align
+            except struct.error:
+                break  # insufficient data
+
+    elif marker == 0xFFEE and s[:5] == b"Adobe":
+        self.info["adobe"] = i16(s, 5)
+        # extract Adobe custom properties
+        try:
+            adobe_transform = s[11]
+        except IndexError:
+            pass
+        else:
+            self.info["adobe_transform"] = adobe_transform
+    elif marker == 0xFFE2 and s[:4] == b"MPF\0":
+        # extract MPO information
+        self.info["mp"] = s[4:]
+        # offset is current location minus buffer size
+        # plus constant header size
+        self.info["mpoffset"] = self.fp.tell() - n + 4
+
+    # If DPI isn't in JPEG header, fetch from EXIF
+    if "dpi" not in self.info and "exif" in self.info:
+        try:
+            exif = self.getexif()
+            resolution_unit = exif[0x0128]
+            x_resolution = exif[0x011A]
+            try:
+                dpi = float(x_resolution[0]) / x_resolution[1]
+            except TypeError:
+                dpi = x_resolution
+            if math.isnan(dpi):
+                raise ValueError
+            if resolution_unit == 3:  # cm
+                # 1 dpcm = 2.54 dpi
+                dpi *= 2.54
+            self.info["dpi"] = dpi, dpi
+        except (TypeError, KeyError, SyntaxError, ValueError, ZeroDivisionError):
+            # SyntaxError for invalid/unreadable EXIF
+            # KeyError for dpi not included
+            # ZeroDivisionError for invalid dpi rational value
+            # ValueError or TypeError for dpi being an invalid float
+            self.info["dpi"] = 72, 72
+
+
+def COM(self, marker):
+    #
+    # Comment marker.  Store these in the APP dictionary.
+    n = i16(self.fp.read(2)) - 2
+    s = ImageFile._safe_read(self.fp, n)
+
+    self.info["comment"] = s
+    self.app["COM"] = s  # compatibility
+    self.applist.append(("COM", s))
+
+
+def SOF(self, marker):
+    #
+    # Start of frame marker.  Defines the size and mode of the
+    # image.  JPEG is colour blind, so we use some simple
+    # heuristics to map the number of layers to an appropriate
+    # mode.  Note that this could be made a bit brighter, by
+    # looking for JFIF and Adobe APP markers.
+
+    n = i16(self.fp.read(2)) - 2
+    s = ImageFile._safe_read(self.fp, n)
+    self._size = i16(s, 3), i16(s, 1)
+
+    self.bits = s[0]
+    if self.bits != 8:
+        msg = f"cannot handle {self.bits}-bit layers"
+        raise SyntaxError(msg)
+
+    self.layers = s[5]
+    if self.layers == 1:
+        self.mode = "L"
+    elif self.layers == 3:
+        self.mode = "RGB"
+    elif self.layers == 4:
+        self.mode = "CMYK"
+    else:
+        msg = f"cannot handle {self.layers}-layer images"
+        raise SyntaxError(msg)
+
+    if marker in [0xFFC2, 0xFFC6, 0xFFCA, 0xFFCE]:
+        self.info["progressive"] = self.info["progression"] = 1
+
+    if self.icclist:
+        # fixup icc profile
+        self.icclist.sort()  # sort by sequence number
+        if self.icclist[0][13] == len(self.icclist):
+            profile = []
+            for p in self.icclist:
+                profile.append(p[14:])
+            icc_profile = b"".join(profile)
+        else:
+            icc_profile = None  # wrong number of fragments
+        self.info["icc_profile"] = icc_profile
+        self.icclist = []
+
+    for i in range(6, len(s), 3):
+        t = s[i : i + 3]
+        # 4-tuples: id, vsamp, hsamp, qtable
+        self.layer.append((t[0], t[1] // 16, t[1] & 15, t[2]))
+
+
+def DQT(self, marker):
+    #
+    # Define quantization table.  Note that there might be more
+    # than one table in each marker.
+
+    # FIXME: The quantization tables can be used to estimate the
+    # compression quality.
+
+    n = i16(self.fp.read(2)) - 2
+    s = ImageFile._safe_read(self.fp, n)
+    while len(s):
+        v = s[0]
+        precision = 1 if (v // 16 == 0) else 2  # in bytes
+        qt_length = 1 + precision * 64
+        if len(s) < qt_length:
+            msg = "bad quantization table marker"
+            raise SyntaxError(msg)
+        data = array.array("B" if precision == 1 else "H", s[1:qt_length])
+        if sys.byteorder == "little" and precision > 1:
+            data.byteswap()  # the values are always big-endian
+        self.quantization[v & 15] = [data[i] for i in zigzag_index]
+        s = s[qt_length:]
+
+
+#
+# JPEG marker table
+
+MARKER = {
+    0xFFC0: ("SOF0", "Baseline DCT", SOF),
+    0xFFC1: ("SOF1", "Extended Sequential DCT", SOF),
+    0xFFC2: ("SOF2", "Progressive DCT", SOF),
+    0xFFC3: ("SOF3", "Spatial lossless", SOF),
+    0xFFC4: ("DHT", "Define Huffman table", Skip),
+    0xFFC5: ("SOF5", "Differential sequential DCT", SOF),
+    0xFFC6: ("SOF6", "Differential progressive DCT", SOF),
+    0xFFC7: ("SOF7", "Differential spatial", SOF),
+    0xFFC8: ("JPG", "Extension", None),
+    0xFFC9: ("SOF9", "Extended sequential DCT (AC)", SOF),
+    0xFFCA: ("SOF10", "Progressive DCT (AC)", SOF),
+    0xFFCB: ("SOF11", "Spatial lossless DCT (AC)", SOF),
+    0xFFCC: ("DAC", "Define arithmetic coding conditioning", Skip),
+    0xFFCD: ("SOF13", "Differential sequential DCT (AC)", SOF),
+    0xFFCE: ("SOF14", "Differential progressive DCT (AC)", SOF),
+    0xFFCF: ("SOF15", "Differential spatial (AC)", SOF),
+    0xFFD0: ("RST0", "Restart 0", None),
+    0xFFD1: ("RST1", "Restart 1", None),
+    0xFFD2: ("RST2", "Restart 2", None),
+    0xFFD3: ("RST3", "Restart 3", None),
+    0xFFD4: ("RST4", "Restart 4", None),
+    0xFFD5: ("RST5", "Restart 5", None),
+    0xFFD6: ("RST6", "Restart 6", None),
+    0xFFD7: ("RST7", "Restart 7", None),
+    0xFFD8: ("SOI", "Start of image", None),
+    0xFFD9: ("EOI", "End of image", None),
+    0xFFDA: ("SOS", "Start of scan", Skip),
+    0xFFDB: ("DQT", "Define quantization table", DQT),
+    0xFFDC: ("DNL", "Define number of lines", Skip),
+    0xFFDD: ("DRI", "Define restart interval", Skip),
+    0xFFDE: ("DHP", "Define hierarchical progression", SOF),
+    0xFFDF: ("EXP", "Expand reference component", Skip),
+    0xFFE0: ("APP0", "Application segment 0", APP),
+    0xFFE1: ("APP1", "Application segment 1", APP),
+    0xFFE2: ("APP2", "Application segment 2", APP),
+    0xFFE3: ("APP3", "Application segment 3", APP),
+    0xFFE4: ("APP4", "Application segment 4", APP),
+    0xFFE5: ("APP5", "Application segment 5", APP),
+    0xFFE6: ("APP6", "Application segment 6", APP),
+    0xFFE7: ("APP7", "Application segment 7", APP),
+    0xFFE8: ("APP8", "Application segment 8", APP),
+    0xFFE9: ("APP9", "Application segment 9", APP),
+    0xFFEA: ("APP10", "Application segment 10", APP),
+    0xFFEB: ("APP11", "Application segment 11", APP),
+    0xFFEC: ("APP12", "Application segment 12", APP),
+    0xFFED: ("APP13", "Application segment 13", APP),
+    0xFFEE: ("APP14", "Application segment 14", APP),
+    0xFFEF: ("APP15", "Application segment 15", APP),
+    0xFFF0: ("JPG0", "Extension 0", None),
+    0xFFF1: ("JPG1", "Extension 1", None),
+    0xFFF2: ("JPG2", "Extension 2", None),
+    0xFFF3: ("JPG3", "Extension 3", None),
+    0xFFF4: ("JPG4", "Extension 4", None),
+    0xFFF5: ("JPG5", "Extension 5", None),
+    0xFFF6: ("JPG6", "Extension 6", None),
+    0xFFF7: ("JPG7", "Extension 7", None),
+    0xFFF8: ("JPG8", "Extension 8", None),
+    0xFFF9: ("JPG9", "Extension 9", None),
+    0xFFFA: ("JPG10", "Extension 10", None),
+    0xFFFB: ("JPG11", "Extension 11", None),
+    0xFFFC: ("JPG12", "Extension 12", None),
+    0xFFFD: ("JPG13", "Extension 13", None),
+    0xFFFE: ("COM", "Comment", COM),
+}
+
+
+def _accept(prefix):
+    # Magic number was taken from https://en.wikipedia.org/wiki/JPEG
+    return prefix[:3] == b"\xFF\xD8\xFF"
+
+
+##
+# Image plugin for JPEG and JFIF images.
+
+
+class JpegImageFile(ImageFile.ImageFile):
+    format = "JPEG"
+    format_description = "JPEG (ISO 10918)"
+
+    def _open(self):
+        s = self.fp.read(3)
+
+        if not _accept(s):
+            msg = "not a JPEG file"
+            raise SyntaxError(msg)
+        s = b"\xFF"
+
+        # Create attributes
+        self.bits = self.layers = 0
+
+        # JPEG specifics (internal)
+        self.layer = []
+        self.huffman_dc = {}
+        self.huffman_ac = {}
+        self.quantization = {}
+        self.app = {}  # compatibility
+        self.applist = []
+        self.icclist = []
+
+        while True:
+            i = s[0]
+            if i == 0xFF:
+                s = s + self.fp.read(1)
+                i = i16(s)
+            else:
+                # Skip non-0xFF junk
+                s = self.fp.read(1)
+                continue
+
+            if i in MARKER:
+                name, description, handler = MARKER[i]
+                if handler is not None:
+                    handler(self, i)
+                if i == 0xFFDA:  # start of scan
+                    rawmode = self.mode
+                    if self.mode == "CMYK":
+                        rawmode = "CMYK;I"  # assume adobe conventions
+                    self.tile = [("jpeg", (0, 0) + self.size, 0, (rawmode, ""))]
+                    # self.__offset = self.fp.tell()
+                    break
+                s = self.fp.read(1)
+            elif i == 0 or i == 0xFFFF:
+                # padded marker or junk; move on
+                s = b"\xff"
+            elif i == 0xFF00:  # Skip extraneous data (escaped 0xFF)
+                s = self.fp.read(1)
+            else:
+                msg = "no marker found"
+                raise SyntaxError(msg)
+
+    def load_read(self, read_bytes):
+        """
+        internal: read more image data
+        For premature EOF and LOAD_TRUNCATED_IMAGES adds EOI marker
+        so libjpeg can finish decoding
+        """
+        s = self.fp.read(read_bytes)
+
+        if not s and ImageFile.LOAD_TRUNCATED_IMAGES and not hasattr(self, "_ended"):
+            # Premature EOF.
+            # Pretend file is finished adding EOI marker
+            self._ended = True
+            return b"\xFF\xD9"
+
+        return s
+
+    def draft(self, mode, size):
+        if len(self.tile) != 1:
+            return
+
+        # Protect from second call
+        if self.decoderconfig:
+            return
+
+        d, e, o, a = self.tile[0]
+        scale = 1
+        original_size = self.size
+
+        if a[0] == "RGB" and mode in ["L", "YCbCr"]:
+            self.mode = mode
+            a = mode, ""
+
+        if size:
+            scale = min(self.size[0] // size[0], self.size[1] // size[1])
+            for s in [8, 4, 2, 1]:
+                if scale >= s:
+                    break
+            e = (
+                e[0],
+                e[1],
+                (e[2] - e[0] + s - 1) // s + e[0],
+                (e[3] - e[1] + s - 1) // s + e[1],
+            )
+            self._size = ((self.size[0] + s - 1) // s, (self.size[1] + s - 1) // s)
+            scale = s
+
+        self.tile = [(d, e, o, a)]
+        self.decoderconfig = (scale, 0)
+
+        box = (0, 0, original_size[0] / scale, original_size[1] / scale)
+        return self.mode, box
+
+    def load_djpeg(self):
+        # ALTERNATIVE: handle JPEGs via the IJG command line utilities
+
+        f, path = tempfile.mkstemp()
+        os.close(f)
+        if os.path.exists(self.filename):
+            subprocess.check_call(["djpeg", "-outfile", path, self.filename])
+        else:
+            try:
+                os.unlink(path)
+            except OSError:
+                pass
+
+            msg = "Invalid Filename"
+            raise ValueError(msg)
+
+        try:
+            with Image.open(path) as _im:
+                _im.load()
+                self.im = _im.im
+        finally:
+            try:
+                os.unlink(path)
+            except OSError:
+                pass
+
+        self.mode = self.im.mode
+        self._size = self.im.size
+
+        self.tile = []
+
+    def _getexif(self):
+        return _getexif(self)
+
+    def _getmp(self):
+        return _getmp(self)
+
+    def getxmp(self):
+        """
+        Returns a dictionary containing the XMP tags.
+        Requires defusedxml to be installed.
+
+        :returns: XMP tags in a dictionary.
+        """
+
+        for segment, content in self.applist:
+            if segment == "APP1":
+                marker, xmp_tags = content.rsplit(b"\x00", 1)
+                if marker == b"http://ns.adobe.com/xap/1.0/":
+                    return self._getxmp(xmp_tags)
+        return {}
+
+
+def _getexif(self):
+    if "exif" not in self.info:
+        return None
+    return self.getexif()._get_merged_dict()
+
+
+def _getmp(self):
+    # Extract MP information.  This method was inspired by the "highly
+    # experimental" _getexif version that's been in use for years now,
+    # itself based on the ImageFileDirectory class in the TIFF plugin.
+
+    # The MP record essentially consists of a TIFF file embedded in a JPEG
+    # application marker.
+    try:
+        data = self.info["mp"]
+    except KeyError:
+        return None
+    file_contents = io.BytesIO(data)
+    head = file_contents.read(8)
+    endianness = ">" if head[:4] == b"\x4d\x4d\x00\x2a" else "<"
+    # process dictionary
+    from . import TiffImagePlugin
+
+    try:
+        info = TiffImagePlugin.ImageFileDirectory_v2(head)
+        file_contents.seek(info.next)
+        info.load(file_contents)
+        mp = dict(info)
+    except Exception as e:
+        msg = "malformed MP Index (unreadable directory)"
+        raise SyntaxError(msg) from e
+    # it's an error not to have a number of images
+    try:
+        quant = mp[0xB001]
+    except KeyError as e:
+        msg = "malformed MP Index (no number of images)"
+        raise SyntaxError(msg) from e
+    # get MP entries
+    mpentries = []
+    try:
+        rawmpentries = mp[0xB002]
+        for entrynum in range(0, quant):
+            unpackedentry = struct.unpack_from(
+                f"{endianness}LLLHH", rawmpentries, entrynum * 16
+            )
+            labels = ("Attribute", "Size", "DataOffset", "EntryNo1", "EntryNo2")
+            mpentry = dict(zip(labels, unpackedentry))
+            mpentryattr = {
+                "DependentParentImageFlag": bool(mpentry["Attribute"] & (1 << 31)),
+                "DependentChildImageFlag": bool(mpentry["Attribute"] & (1 << 30)),
+                "RepresentativeImageFlag": bool(mpentry["Attribute"] & (1 << 29)),
+                "Reserved": (mpentry["Attribute"] & (3 << 27)) >> 27,
+                "ImageDataFormat": (mpentry["Attribute"] & (7 << 24)) >> 24,
+                "MPType": mpentry["Attribute"] & 0x00FFFFFF,
+            }
+            if mpentryattr["ImageDataFormat"] == 0:
+                mpentryattr["ImageDataFormat"] = "JPEG"
+            else:
+                msg = "unsupported picture format in MPO"
+                raise SyntaxError(msg)
+            mptypemap = {
+                0x000000: "Undefined",
+                0x010001: "Large Thumbnail (VGA Equivalent)",
+                0x010002: "Large Thumbnail (Full HD Equivalent)",
+                0x020001: "Multi-Frame Image (Panorama)",
+                0x020002: "Multi-Frame Image: (Disparity)",
+                0x020003: "Multi-Frame Image: (Multi-Angle)",
+                0x030000: "Baseline MP Primary Image",
+            }
+            mpentryattr["MPType"] = mptypemap.get(mpentryattr["MPType"], "Unknown")
+            mpentry["Attribute"] = mpentryattr
+            mpentries.append(mpentry)
+        mp[0xB002] = mpentries
+    except KeyError as e:
+        msg = "malformed MP Index (bad MP Entry)"
+        raise SyntaxError(msg) from e
+    # Next we should try and parse the individual image unique ID list;
+    # we don't because I've never seen this actually used in a real MPO
+    # file and so can't test it.
+    return mp
+
+
+# --------------------------------------------------------------------
+# stuff to save JPEG files
+
+RAWMODE = {
+    "1": "L",
+    "L": "L",
+    "RGB": "RGB",
+    "RGBX": "RGB",
+    "CMYK": "CMYK;I",  # assume adobe conventions
+    "YCbCr": "YCbCr",
+}
+
+# fmt: off
+zigzag_index = (
+    0,  1,  5,  6, 14, 15, 27, 28,
+    2,  4,  7, 13, 16, 26, 29, 42,
+    3,  8, 12, 17, 25, 30, 41, 43,
+    9, 11, 18, 24, 31, 40, 44, 53,
+    10, 19, 23, 32, 39, 45, 52, 54,
+    20, 22, 33, 38, 46, 51, 55, 60,
+    21, 34, 37, 47, 50, 56, 59, 61,
+    35, 36, 48, 49, 57, 58, 62, 63,
+)
+
+samplings = {
+    (1, 1, 1, 1, 1, 1): 0,
+    (2, 1, 1, 1, 1, 1): 1,
+    (2, 2, 1, 1, 1, 1): 2,
+}
+# fmt: on
+
+
+def get_sampling(im):
+    # There's no subsampling when images have only 1 layer
+    # (grayscale images) or when they are CMYK (4 layers),
+    # so set subsampling to the default value.
+    #
+    # NOTE: currently Pillow can't encode JPEG to YCCK format.
+    # If YCCK support is added in the future, subsampling code will have
+    # to be updated (here and in JpegEncode.c) to deal with 4 layers.
+    if not hasattr(im, "layers") or im.layers in (1, 4):
+        return -1
+    sampling = im.layer[0][1:3] + im.layer[1][1:3] + im.layer[2][1:3]
+    return samplings.get(sampling, -1)
+
+
+def _save(im, fp, filename):
+    if im.width == 0 or im.height == 0:
+        msg = "cannot write empty image as JPEG"
+        raise ValueError(msg)
+
+    try:
+        rawmode = RAWMODE[im.mode]
+    except KeyError as e:
+        msg = f"cannot write mode {im.mode} as JPEG"
+        raise OSError(msg) from e
+
+    info = im.encoderinfo
+
+    dpi = [round(x) for x in info.get("dpi", (0, 0))]
+
+    quality = info.get("quality", -1)
+    subsampling = info.get("subsampling", -1)
+    qtables = info.get("qtables")
+
+    if quality == "keep":
+        quality = -1
+        subsampling = "keep"
+        qtables = "keep"
+    elif quality in presets:
+        preset = presets[quality]
+        quality = -1
+        subsampling = preset.get("subsampling", -1)
+        qtables = preset.get("quantization")
+    elif not isinstance(quality, int):
+        msg = "Invalid quality setting"
+        raise ValueError(msg)
+    else:
+        if subsampling in presets:
+            subsampling = presets[subsampling].get("subsampling", -1)
+        if isinstance(qtables, str) and qtables in presets:
+            qtables = presets[qtables].get("quantization")
+
+    if subsampling == "4:4:4":
+        subsampling = 0
+    elif subsampling == "4:2:2":
+        subsampling = 1
+    elif subsampling == "4:2:0":
+        subsampling = 2
+    elif subsampling == "4:1:1":
+        # For compatibility. Before Pillow 4.3, 4:1:1 actually meant 4:2:0.
+        # Set 4:2:0 if someone is still using that value.
+        subsampling = 2
+    elif subsampling == "keep":
+        if im.format != "JPEG":
+            msg = "Cannot use 'keep' when original image is not a JPEG"
+            raise ValueError(msg)
+        subsampling = get_sampling(im)
+
+    def validate_qtables(qtables):
+        if qtables is None:
+            return qtables
+        if isinstance(qtables, str):
+            try:
+                lines = [
+                    int(num)
+                    for line in qtables.splitlines()
+                    for num in line.split("#", 1)[0].split()
+                ]
+            except ValueError as e:
+                msg = "Invalid quantization table"
+                raise ValueError(msg) from e
+            else:
+                qtables = [lines[s : s + 64] for s in range(0, len(lines), 64)]
+        if isinstance(qtables, (tuple, list, dict)):
+            if isinstance(qtables, dict):
+                qtables = [
+                    qtables[key] for key in range(len(qtables)) if key in qtables
+                ]
+            elif isinstance(qtables, tuple):
+                qtables = list(qtables)
+            if not (0 < len(qtables) < 5):
+                msg = "None or too many quantization tables"
+                raise ValueError(msg)
+            for idx, table in enumerate(qtables):
+                try:
+                    if len(table) != 64:
+                        raise TypeError
+                    table = array.array("H", table)
+                except TypeError as e:
+                    msg = "Invalid quantization table"
+                    raise ValueError(msg) from e
+                else:
+                    qtables[idx] = list(table)
+            return qtables
+
+    if qtables == "keep":
+        if im.format != "JPEG":
+            msg = "Cannot use 'keep' when original image is not a JPEG"
+            raise ValueError(msg)
+        qtables = getattr(im, "quantization", None)
+    qtables = validate_qtables(qtables)
+
+    extra = info.get("extra", b"")
+
+    MAX_BYTES_IN_MARKER = 65533
+    icc_profile = info.get("icc_profile")
+    if icc_profile:
+        ICC_OVERHEAD_LEN = 14
+        MAX_DATA_BYTES_IN_MARKER = MAX_BYTES_IN_MARKER - ICC_OVERHEAD_LEN
+        markers = []
+        while icc_profile:
+            markers.append(icc_profile[:MAX_DATA_BYTES_IN_MARKER])
+            icc_profile = icc_profile[MAX_DATA_BYTES_IN_MARKER:]
+        i = 1
+        for marker in markers:
+            size = o16(2 + ICC_OVERHEAD_LEN + len(marker))
+            extra += (
+                b"\xFF\xE2"
+                + size
+                + b"ICC_PROFILE\0"
+                + o8(i)
+                + o8(len(markers))
+                + marker
+            )
+            i += 1
+
+    comment = info.get("comment", im.info.get("comment"))
+
+    # "progressive" is the official name, but older documentation
+    # says "progression"
+    # FIXME: issue a warning if the wrong form is used (post-1.1.7)
+    progressive = info.get("progressive", False) or info.get("progression", False)
+
+    optimize = info.get("optimize", False)
+
+    exif = info.get("exif", b"")
+    if isinstance(exif, Image.Exif):
+        exif = exif.tobytes()
+    if len(exif) > MAX_BYTES_IN_MARKER:
+        msg = "EXIF data is too long"
+        raise ValueError(msg)
+
+    # get keyword arguments
+    im.encoderconfig = (
+        quality,
+        progressive,
+        info.get("smooth", 0),
+        optimize,
+        info.get("streamtype", 0),
+        dpi[0],
+        dpi[1],
+        subsampling,
+        qtables,
+        comment,
+        extra,
+        exif,
+    )
+
+    # if we optimize, libjpeg needs a buffer big enough to hold the whole image
+    # in a shot. Guessing on the size, at im.size bytes. (raw pixel size is
+    # channels*size, this is a value that's been used in a django patch.
+    # https://github.com/matthewwithanm/django-imagekit/issues/50
+    bufsize = 0
+    if optimize or progressive:
+        # CMYK can be bigger
+        if im.mode == "CMYK":
+            bufsize = 4 * im.size[0] * im.size[1]
+        # keep sets quality to -1, but the actual value may be high.
+        elif quality >= 95 or quality == -1:
+            bufsize = 2 * im.size[0] * im.size[1]
+        else:
+            bufsize = im.size[0] * im.size[1]
+
+    # The EXIF info needs to be written as one block, + APP1, + one spare byte.
+    # Ensure that our buffer is big enough. Same with the icc_profile block.
+    bufsize = max(ImageFile.MAXBLOCK, bufsize, len(exif) + 5, len(extra) + 1)
+
+    ImageFile._save(im, fp, [("jpeg", (0, 0) + im.size, 0, rawmode)], bufsize)
+
+
+def _save_cjpeg(im, fp, filename):
+    # ALTERNATIVE: handle JPEGs via the IJG command line utilities.
+    tempfile = im._dump()
+    subprocess.check_call(["cjpeg", "-outfile", filename, tempfile])
+    try:
+        os.unlink(tempfile)
+    except OSError:
+        pass
+
+
+##
+# Factory for making JPEG and MPO instances
+def jpeg_factory(fp=None, filename=None):
+    im = JpegImageFile(fp, filename)
+    try:
+        mpheader = im._getmp()
+        if mpheader[45057] > 1:
+            # It's actually an MPO
+            from .MpoImagePlugin import MpoImageFile
+
+            # Don't reload everything, just convert it.
+            im = MpoImageFile.adopt(im, mpheader)
+    except (TypeError, IndexError):
+        # It is really a JPEG
+        pass
+    except SyntaxError:
+        warnings.warn(
+            "Image appears to be a malformed MPO file, it will be "
+            "interpreted as a base JPEG file"
+        )
+    return im
+
+
+# ---------------------------------------------------------------------
+# Registry stuff
+
+Image.register_open(JpegImageFile.format, jpeg_factory, _accept)
+Image.register_save(JpegImageFile.format, _save)
+
+Image.register_extensions(JpegImageFile.format, [".jfif", ".jpe", ".jpg", ".jpeg"])
+
+Image.register_mime(JpegImageFile.format, "image/jpeg")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/JpegPresets.py

@@ -0,0 +1,240 @@
+"""
+JPEG quality settings equivalent to the Photoshop settings.
+Can be used when saving JPEG files.
+
+The following presets are available by default:
+``web_low``, ``web_medium``, ``web_high``, ``web_very_high``, ``web_maximum``,
+``low``, ``medium``, ``high``, ``maximum``.
+More presets can be added to the :py:data:`presets` dict if needed.
+
+To apply the preset, specify::
+
+  quality="preset_name"
+
+To apply only the quantization table::
+
+  qtables="preset_name"
+
+To apply only the subsampling setting::
+
+  subsampling="preset_name"
+
+Example::
+
+  im.save("image_name.jpg", quality="web_high")
+
+Subsampling
+-----------
+
+Subsampling is the practice of encoding images by implementing less resolution
+for chroma information than for luma information.
+(ref.: https://en.wikipedia.org/wiki/Chroma_subsampling)
+
+Possible subsampling values are 0, 1 and 2 that correspond to 4:4:4, 4:2:2 and
+4:2:0.
+
+You can get the subsampling of a JPEG with the
+:func:`.JpegImagePlugin.get_sampling` function.
+
+In JPEG compressed data a JPEG marker is used instead of an EXIF tag.
+(ref.: https://exiv2.org/tags.html)
+
+
+Quantization tables
+-------------------
+
+They are values use by the DCT (Discrete cosine transform) to remove
+*unnecessary* information from the image (the lossy part of the compression).
+(ref.: https://en.wikipedia.org/wiki/Quantization_matrix#Quantization_matrices,
+https://en.wikipedia.org/wiki/JPEG#Quantization)
+
+You can get the quantization tables of a JPEG with::
+
+  im.quantization
+
+This will return a dict with a number of lists. You can pass this dict
+directly as the qtables argument when saving a JPEG.
+
+The quantization table format in presets is a list with sublists. These formats
+are interchangeable.
+
+Libjpeg ref.:
+https://web.archive.org/web/20120328125543/http://www.jpegcameras.com/libjpeg/libjpeg-3.html
+
+"""
+
+# fmt: off
+presets = {
+            'web_low':      {'subsampling':  2,  # "4:2:0"
+                             'quantization': [
+                               [20, 16, 25, 39, 50, 46, 62, 68,
+                                16, 18, 23, 38, 38, 53, 65, 68,
+                                25, 23, 31, 38, 53, 65, 68, 68,
+                                39, 38, 38, 53, 65, 68, 68, 68,
+                                50, 38, 53, 65, 68, 68, 68, 68,
+                                46, 53, 65, 68, 68, 68, 68, 68,
+                                62, 65, 68, 68, 68, 68, 68, 68,
+                                68, 68, 68, 68, 68, 68, 68, 68],
+                               [21, 25, 32, 38, 54, 68, 68, 68,
+                                25, 28, 24, 38, 54, 68, 68, 68,
+                                32, 24, 32, 43, 66, 68, 68, 68,
+                                38, 38, 43, 53, 68, 68, 68, 68,
+                                54, 54, 66, 68, 68, 68, 68, 68,
+                                68, 68, 68, 68, 68, 68, 68, 68,
+                                68, 68, 68, 68, 68, 68, 68, 68,
+                                68, 68, 68, 68, 68, 68, 68, 68]
+                              ]},
+            'web_medium':   {'subsampling':  2,  # "4:2:0"
+                             'quantization': [
+                               [16, 11, 11, 16, 23, 27, 31, 30,
+                                11, 12, 12, 15, 20, 23, 23, 30,
+                                11, 12, 13, 16, 23, 26, 35, 47,
+                                16, 15, 16, 23, 26, 37, 47, 64,
+                                23, 20, 23, 26, 39, 51, 64, 64,
+                                27, 23, 26, 37, 51, 64, 64, 64,
+                                31, 23, 35, 47, 64, 64, 64, 64,
+                                30, 30, 47, 64, 64, 64, 64, 64],
+                               [17, 15, 17, 21, 20, 26, 38, 48,
+                                15, 19, 18, 17, 20, 26, 35, 43,
+                                17, 18, 20, 22, 26, 30, 46, 53,
+                                21, 17, 22, 28, 30, 39, 53, 64,
+                                20, 20, 26, 30, 39, 48, 64, 64,
+                                26, 26, 30, 39, 48, 63, 64, 64,
+                                38, 35, 46, 53, 64, 64, 64, 64,
+                                48, 43, 53, 64, 64, 64, 64, 64]
+                             ]},
+            'web_high':     {'subsampling':  0,  # "4:4:4"
+                             'quantization': [
+                               [6,   4,  4,  6,  9, 11, 12, 16,
+                                4,   5,  5,  6,  8, 10, 12, 12,
+                                4,   5,  5,  6, 10, 12, 14, 19,
+                                6,   6,  6, 11, 12, 15, 19, 28,
+                                9,   8, 10, 12, 16, 20, 27, 31,
+                                11, 10, 12, 15, 20, 27, 31, 31,
+                                12, 12, 14, 19, 27, 31, 31, 31,
+                                16, 12, 19, 28, 31, 31, 31, 31],
+                               [7,   7, 13, 24, 26, 31, 31, 31,
+                                7,  12, 16, 21, 31, 31, 31, 31,
+                                13, 16, 17, 31, 31, 31, 31, 31,
+                                24, 21, 31, 31, 31, 31, 31, 31,
+                                26, 31, 31, 31, 31, 31, 31, 31,
+                                31, 31, 31, 31, 31, 31, 31, 31,
+                                31, 31, 31, 31, 31, 31, 31, 31,
+                                31, 31, 31, 31, 31, 31, 31, 31]
+                             ]},
+            'web_very_high': {'subsampling':  0,  # "4:4:4"
+                              'quantization': [
+                               [2,   2,  2,  2,  3,  4,  5,  6,
+                                2,   2,  2,  2,  3,  4,  5,  6,
+                                2,   2,  2,  2,  4,  5,  7,  9,
+                                2,   2,  2,  4,  5,  7,  9, 12,
+                                3,   3,  4,  5,  8, 10, 12, 12,
+                                4,   4,  5,  7, 10, 12, 12, 12,
+                                5,   5,  7,  9, 12, 12, 12, 12,
+                                6,   6,  9, 12, 12, 12, 12, 12],
+                               [3,   3,  5,  9, 13, 15, 15, 15,
+                                3,   4,  6, 11, 14, 12, 12, 12,
+                                5,   6,  9, 14, 12, 12, 12, 12,
+                                9,  11, 14, 12, 12, 12, 12, 12,
+                                13, 14, 12, 12, 12, 12, 12, 12,
+                                15, 12, 12, 12, 12, 12, 12, 12,
+                                15, 12, 12, 12, 12, 12, 12, 12,
+                                15, 12, 12, 12, 12, 12, 12, 12]
+                              ]},
+            'web_maximum':  {'subsampling':  0,  # "4:4:4"
+                             'quantization': [
+                                [1,  1,  1,  1,  1,  1,  1,  1,
+                                 1,  1,  1,  1,  1,  1,  1,  1,
+                                 1,  1,  1,  1,  1,  1,  1,  2,
+                                 1,  1,  1,  1,  1,  1,  2,  2,
+                                 1,  1,  1,  1,  1,  2,  2,  3,
+                                 1,  1,  1,  1,  2,  2,  3,  3,
+                                 1,  1,  1,  2,  2,  3,  3,  3,
+                                 1,  1,  2,  2,  3,  3,  3,  3],
+                                [1,  1,  1,  2,  2,  3,  3,  3,
+                                 1,  1,  1,  2,  3,  3,  3,  3,
+                                 1,  1,  1,  3,  3,  3,  3,  3,
+                                 2,  2,  3,  3,  3,  3,  3,  3,
+                                 2,  3,  3,  3,  3,  3,  3,  3,
+                                 3,  3,  3,  3,  3,  3,  3,  3,
+                                 3,  3,  3,  3,  3,  3,  3,  3,
+                                 3,  3,  3,  3,  3,  3,  3,  3]
+                             ]},
+            'low':          {'subsampling':  2,  # "4:2:0"
+                             'quantization': [
+                               [18, 14, 14, 21, 30, 35, 34, 17,
+                                14, 16, 16, 19, 26, 23, 12, 12,
+                                14, 16, 17, 21, 23, 12, 12, 12,
+                                21, 19, 21, 23, 12, 12, 12, 12,
+                                30, 26, 23, 12, 12, 12, 12, 12,
+                                35, 23, 12, 12, 12, 12, 12, 12,
+                                34, 12, 12, 12, 12, 12, 12, 12,
+                                17, 12, 12, 12, 12, 12, 12, 12],
+                               [20, 19, 22, 27, 20, 20, 17, 17,
+                                19, 25, 23, 14, 14, 12, 12, 12,
+                                22, 23, 14, 14, 12, 12, 12, 12,
+                                27, 14, 14, 12, 12, 12, 12, 12,
+                                20, 14, 12, 12, 12, 12, 12, 12,
+                                20, 12, 12, 12, 12, 12, 12, 12,
+                                17, 12, 12, 12, 12, 12, 12, 12,
+                                17, 12, 12, 12, 12, 12, 12, 12]
+                             ]},
+            'medium':       {'subsampling':  2,  # "4:2:0"
+                             'quantization': [
+                               [12,  8,  8, 12, 17, 21, 24, 17,
+                                8,   9,  9, 11, 15, 19, 12, 12,
+                                8,   9, 10, 12, 19, 12, 12, 12,
+                                12, 11, 12, 21, 12, 12, 12, 12,
+                                17, 15, 19, 12, 12, 12, 12, 12,
+                                21, 19, 12, 12, 12, 12, 12, 12,
+                                24, 12, 12, 12, 12, 12, 12, 12,
+                                17, 12, 12, 12, 12, 12, 12, 12],
+                               [13, 11, 13, 16, 20, 20, 17, 17,
+                                11, 14, 14, 14, 14, 12, 12, 12,
+                                13, 14, 14, 14, 12, 12, 12, 12,
+                                16, 14, 14, 12, 12, 12, 12, 12,
+                                20, 14, 12, 12, 12, 12, 12, 12,
+                                20, 12, 12, 12, 12, 12, 12, 12,
+                                17, 12, 12, 12, 12, 12, 12, 12,
+                                17, 12, 12, 12, 12, 12, 12, 12]
+                             ]},
+            'high':         {'subsampling':  0,  # "4:4:4"
+                             'quantization': [
+                               [6,   4,  4,  6,  9, 11, 12, 16,
+                                4,   5,  5,  6,  8, 10, 12, 12,
+                                4,   5,  5,  6, 10, 12, 12, 12,
+                                6,   6,  6, 11, 12, 12, 12, 12,
+                                9,   8, 10, 12, 12, 12, 12, 12,
+                                11, 10, 12, 12, 12, 12, 12, 12,
+                                12, 12, 12, 12, 12, 12, 12, 12,
+                                16, 12, 12, 12, 12, 12, 12, 12],
+                               [7,   7, 13, 24, 20, 20, 17, 17,
+                                7,  12, 16, 14, 14, 12, 12, 12,
+                                13, 16, 14, 14, 12, 12, 12, 12,
+                                24, 14, 14, 12, 12, 12, 12, 12,
+                                20, 14, 12, 12, 12, 12, 12, 12,
+                                20, 12, 12, 12, 12, 12, 12, 12,
+                                17, 12, 12, 12, 12, 12, 12, 12,
+                                17, 12, 12, 12, 12, 12, 12, 12]
+                             ]},
+            'maximum':      {'subsampling':  0,  # "4:4:4"
+                             'quantization': [
+                               [2,   2,  2,  2,  3,  4,  5,  6,
+                                2,   2,  2,  2,  3,  4,  5,  6,
+                                2,   2,  2,  2,  4,  5,  7,  9,
+                                2,   2,  2,  4,  5,  7,  9, 12,
+                                3,   3,  4,  5,  8, 10, 12, 12,
+                                4,   4,  5,  7, 10, 12, 12, 12,
+                                5,   5,  7,  9, 12, 12, 12, 12,
+                                6,   6,  9, 12, 12, 12, 12, 12],
+                               [3,   3,  5,  9, 13, 15, 15, 15,
+                                3,   4,  6, 10, 14, 12, 12, 12,
+                                5,   6,  9, 14, 12, 12, 12, 12,
+                                9,  10, 14, 12, 12, 12, 12, 12,
+                                13, 14, 12, 12, 12, 12, 12, 12,
+                                15, 12, 12, 12, 12, 12, 12, 12,
+                                15, 12, 12, 12, 12, 12, 12, 12,
+                                15, 12, 12, 12, 12, 12, 12, 12]
+                             ]},
+}
+# fmt: on

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/McIdasImagePlugin.py

@@ -0,0 +1,75 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# Basic McIdas support for PIL
+#
+# History:
+# 1997-05-05 fl  Created (8-bit images only)
+# 2009-03-08 fl  Added 16/32-bit support.
+#
+# Thanks to Richard Jones and Craig Swank for specs and samples.
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1997.
+#
+# See the README file for information on usage and redistribution.
+#
+
+import struct
+
+from . import Image, ImageFile
+
+
+def _accept(s):
+    return s[:8] == b"\x00\x00\x00\x00\x00\x00\x00\x04"
+
+
+##
+# Image plugin for McIdas area images.
+
+
+class McIdasImageFile(ImageFile.ImageFile):
+    format = "MCIDAS"
+    format_description = "McIdas area file"
+
+    def _open(self):
+        # parse area file directory
+        s = self.fp.read(256)
+        if not _accept(s) or len(s) != 256:
+            msg = "not an McIdas area file"
+            raise SyntaxError(msg)
+
+        self.area_descriptor_raw = s
+        self.area_descriptor = w = [0] + list(struct.unpack("!64i", s))
+
+        # get mode
+        if w[11] == 1:
+            mode = rawmode = "L"
+        elif w[11] == 2:
+            # FIXME: add memory map support
+            mode = "I"
+            rawmode = "I;16B"
+        elif w[11] == 4:
+            # FIXME: add memory map support
+            mode = "I"
+            rawmode = "I;32B"
+        else:
+            msg = "unsupported McIdas format"
+            raise SyntaxError(msg)
+
+        self.mode = mode
+        self._size = w[10], w[9]
+
+        offset = w[34] + w[15]
+        stride = w[15] + w[10] * w[11] * w[14]
+
+        self.tile = [("raw", (0, 0) + self.size, offset, (rawmode, stride, 1))]
+
+
+# --------------------------------------------------------------------
+# registry
+
+Image.register_open(McIdasImageFile.format, McIdasImageFile, _accept)
+
+# no default extension

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/MicImagePlugin.py

@@ -0,0 +1,103 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# Microsoft Image Composer support for PIL
+#
+# Notes:
+#       uses TiffImagePlugin.py to read the actual image streams
+#
+# History:
+#       97-01-20 fl     Created
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1997.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+import olefile
+
+from . import Image, TiffImagePlugin
+
+#
+# --------------------------------------------------------------------
+
+
+def _accept(prefix):
+    return prefix[:8] == olefile.MAGIC
+
+
+##
+# Image plugin for Microsoft's Image Composer file format.
+
+
+class MicImageFile(TiffImagePlugin.TiffImageFile):
+    format = "MIC"
+    format_description = "Microsoft Image Composer"
+    _close_exclusive_fp_after_loading = False
+
+    def _open(self):
+        # read the OLE directory and see if this is a likely
+        # to be a Microsoft Image Composer file
+
+        try:
+            self.ole = olefile.OleFileIO(self.fp)
+        except OSError as e:
+            msg = "not an MIC file; invalid OLE file"
+            raise SyntaxError(msg) from e
+
+        # find ACI subfiles with Image members (maybe not the
+        # best way to identify MIC files, but what the... ;-)
+
+        self.images = []
+        for path in self.ole.listdir():
+            if path[1:] and path[0][-4:] == ".ACI" and path[1] == "Image":
+                self.images.append(path)
+
+        # if we didn't find any images, this is probably not
+        # an MIC file.
+        if not self.images:
+            msg = "not an MIC file; no image entries"
+            raise SyntaxError(msg)
+
+        self.frame = None
+        self._n_frames = len(self.images)
+        self.is_animated = self._n_frames > 1
+
+        self.seek(0)
+
+    def seek(self, frame):
+        if not self._seek_check(frame):
+            return
+        try:
+            filename = self.images[frame]
+        except IndexError as e:
+            msg = "no such frame"
+            raise EOFError(msg) from e
+
+        self.fp = self.ole.openstream(filename)
+
+        TiffImagePlugin.TiffImageFile._open(self)
+
+        self.frame = frame
+
+    def tell(self):
+        return self.frame
+
+    def close(self):
+        self.ole.close()
+        super().close()
+
+    def __exit__(self, *args):
+        self.ole.close()
+        super().__exit__()
+
+
+#
+# --------------------------------------------------------------------
+
+Image.register_open(MicImageFile.format, MicImageFile, _accept)
+
+Image.register_extension(MicImageFile.format, ".mic")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/MpegImagePlugin.py

@@ -0,0 +1,82 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# MPEG file handling
+#
+# History:
+#       95-09-09 fl     Created
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1995.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+from . import Image, ImageFile
+from ._binary import i8
+
+#
+# Bitstream parser
+
+
+class BitStream:
+    def __init__(self, fp):
+        self.fp = fp
+        self.bits = 0
+        self.bitbuffer = 0
+
+    def next(self):
+        return i8(self.fp.read(1))
+
+    def peek(self, bits):
+        while self.bits < bits:
+            c = self.next()
+            if c < 0:
+                self.bits = 0
+                continue
+            self.bitbuffer = (self.bitbuffer << 8) + c
+            self.bits += 8
+        return self.bitbuffer >> (self.bits - bits) & (1 << bits) - 1
+
+    def skip(self, bits):
+        while self.bits < bits:
+            self.bitbuffer = (self.bitbuffer << 8) + i8(self.fp.read(1))
+            self.bits += 8
+        self.bits = self.bits - bits
+
+    def read(self, bits):
+        v = self.peek(bits)
+        self.bits = self.bits - bits
+        return v
+
+
+##
+# Image plugin for MPEG streams.  This plugin can identify a stream,
+# but it cannot read it.
+
+
+class MpegImageFile(ImageFile.ImageFile):
+    format = "MPEG"
+    format_description = "MPEG"
+
+    def _open(self):
+        s = BitStream(self.fp)
+
+        if s.read(32) != 0x1B3:
+            msg = "not an MPEG file"
+            raise SyntaxError(msg)
+
+        self.mode = "RGB"
+        self._size = s.read(12), s.read(12)
+
+
+# --------------------------------------------------------------------
+# Registry stuff
+
+Image.register_open(MpegImageFile.format, MpegImageFile)
+
+Image.register_extensions(MpegImageFile.format, [".mpg", ".mpeg"])
+
+Image.register_mime(MpegImageFile.format, "video/mpeg")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/MpoImagePlugin.py

@@ -0,0 +1,197 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# MPO file handling
+#
+# See "Multi-Picture Format" (CIPA DC-007-Translation 2009, Standard of the
+# Camera & Imaging Products Association)
+#
+# The multi-picture object combines multiple JPEG images (with a modified EXIF
+# data format) into a single file. While it can theoretically be used much like
+# a GIF animation, it is commonly used to represent 3D photographs and is (as
+# of this writing) the most commonly used format by 3D cameras.
+#
+# History:
+# 2014-03-13 Feneric   Created
+#
+# See the README file for information on usage and redistribution.
+#
+
+import itertools
+import os
+import struct
+
+from . import (
+    ExifTags,
+    Image,
+    ImageFile,
+    ImageSequence,
+    JpegImagePlugin,
+    TiffImagePlugin,
+)
+from ._binary import i16be as i16
+from ._binary import o32le
+
+# def _accept(prefix):
+#     return JpegImagePlugin._accept(prefix)
+
+
+def _save(im, fp, filename):
+    JpegImagePlugin._save(im, fp, filename)
+
+
+def _save_all(im, fp, filename):
+    append_images = im.encoderinfo.get("append_images", [])
+    if not append_images:
+        try:
+            animated = im.is_animated
+        except AttributeError:
+            animated = False
+        if not animated:
+            _save(im, fp, filename)
+            return
+
+    mpf_offset = 28
+    offsets = []
+    for imSequence in itertools.chain([im], append_images):
+        for im_frame in ImageSequence.Iterator(imSequence):
+            if not offsets:
+                # APP2 marker
+                im_frame.encoderinfo["extra"] = (
+                    b"\xFF\xE2" + struct.pack(">H", 6 + 82) + b"MPF\0" + b" " * 82
+                )
+                exif = im_frame.encoderinfo.get("exif")
+                if isinstance(exif, Image.Exif):
+                    exif = exif.tobytes()
+                    im_frame.encoderinfo["exif"] = exif
+                if exif:
+                    mpf_offset += 4 + len(exif)
+
+                JpegImagePlugin._save(im_frame, fp, filename)
+                offsets.append(fp.tell())
+            else:
+                im_frame.save(fp, "JPEG")
+                offsets.append(fp.tell() - offsets[-1])
+
+    ifd = TiffImagePlugin.ImageFileDirectory_v2()
+    ifd[0xB000] = b"0100"
+    ifd[0xB001] = len(offsets)
+
+    mpentries = b""
+    data_offset = 0
+    for i, size in enumerate(offsets):
+        if i == 0:
+            mptype = 0x030000  # Baseline MP Primary Image
+        else:
+            mptype = 0x000000  # Undefined
+        mpentries += struct.pack("<LLLHH", mptype, size, data_offset, 0, 0)
+        if i == 0:
+            data_offset -= mpf_offset
+        data_offset += size
+    ifd[0xB002] = mpentries
+
+    fp.seek(mpf_offset)
+    fp.write(b"II\x2A\x00" + o32le(8) + ifd.tobytes(8))
+    fp.seek(0, os.SEEK_END)
+
+
+##
+# Image plugin for MPO images.
+
+
+class MpoImageFile(JpegImagePlugin.JpegImageFile):
+    format = "MPO"
+    format_description = "MPO (CIPA DC-007)"
+    _close_exclusive_fp_after_loading = False
+
+    def _open(self):
+        self.fp.seek(0)  # prep the fp in order to pass the JPEG test
+        JpegImagePlugin.JpegImageFile._open(self)
+        self._after_jpeg_open()
+
+    def _after_jpeg_open(self, mpheader=None):
+        self._initial_size = self.size
+        self.mpinfo = mpheader if mpheader is not None else self._getmp()
+        self.n_frames = self.mpinfo[0xB001]
+        self.__mpoffsets = [
+            mpent["DataOffset"] + self.info["mpoffset"] for mpent in self.mpinfo[0xB002]
+        ]
+        self.__mpoffsets[0] = 0
+        # Note that the following assertion will only be invalid if something
+        # gets broken within JpegImagePlugin.
+        assert self.n_frames == len(self.__mpoffsets)
+        del self.info["mpoffset"]  # no longer needed
+        self.is_animated = self.n_frames > 1
+        self._fp = self.fp  # FIXME: hack
+        self._fp.seek(self.__mpoffsets[0])  # get ready to read first frame
+        self.__frame = 0
+        self.offset = 0
+        # for now we can only handle reading and individual frame extraction
+        self.readonly = 1
+
+    def load_seek(self, pos):
+        self._fp.seek(pos)
+
+    def seek(self, frame):
+        if not self._seek_check(frame):
+            return
+        self.fp = self._fp
+        self.offset = self.__mpoffsets[frame]
+
+        self.fp.seek(self.offset + 2)  # skip SOI marker
+        segment = self.fp.read(2)
+        if not segment:
+            msg = "No data found for frame"
+            raise ValueError(msg)
+        self._size = self._initial_size
+        if i16(segment) == 0xFFE1:  # APP1
+            n = i16(self.fp.read(2)) - 2
+            self.info["exif"] = ImageFile._safe_read(self.fp, n)
+            self._reload_exif()
+
+            mptype = self.mpinfo[0xB002][frame]["Attribute"]["MPType"]
+            if mptype.startswith("Large Thumbnail"):
+                exif = self.getexif().get_ifd(ExifTags.IFD.Exif)
+                if 40962 in exif and 40963 in exif:
+                    self._size = (exif[40962], exif[40963])
+        elif "exif" in self.info:
+            del self.info["exif"]
+            self._reload_exif()
+
+        self.tile = [("jpeg", (0, 0) + self.size, self.offset, (self.mode, ""))]
+        self.__frame = frame
+
+    def tell(self):
+        return self.__frame
+
+    @staticmethod
+    def adopt(jpeg_instance, mpheader=None):
+        """
+        Transform the instance of JpegImageFile into
+        an instance of MpoImageFile.
+        After the call, the JpegImageFile is extended
+        to be an MpoImageFile.
+
+        This is essentially useful when opening a JPEG
+        file that reveals itself as an MPO, to avoid
+        double call to _open.
+        """
+        jpeg_instance.__class__ = MpoImageFile
+        jpeg_instance._after_jpeg_open(mpheader)
+        return jpeg_instance
+
+
+# ---------------------------------------------------------------------
+# Registry stuff
+
+# Note that since MPO shares a factory with JPEG, we do not need to do a
+# separate registration for it here.
+# Image.register_open(MpoImageFile.format,
+#                     JpegImagePlugin.jpeg_factory, _accept)
+Image.register_save(MpoImageFile.format, _save)
+Image.register_save_all(MpoImageFile.format, _save_all)
+
+Image.register_extension(MpoImageFile.format, ".mpo")
+
+Image.register_mime(MpoImageFile.format, "image/mpo")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/MspImagePlugin.py

@@ -0,0 +1,194 @@
+#
+# The Python Imaging Library.
+#
+# MSP file handling
+#
+# This is the format used by the Paint program in Windows 1 and 2.
+#
+# History:
+#       95-09-05 fl     Created
+#       97-01-03 fl     Read/write MSP images
+#       17-02-21 es     Fixed RLE interpretation
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1995-97.
+# Copyright (c) Eric Soroos 2017.
+#
+# See the README file for information on usage and redistribution.
+#
+# More info on this format: https://archive.org/details/gg243631
+# Page 313:
+# Figure 205. Windows Paint Version 1: "DanM" Format
+# Figure 206. Windows Paint Version 2: "LinS" Format. Used in Windows V2.03
+#
+# See also: https://www.fileformat.info/format/mspaint/egff.htm
+
+import io
+import struct
+
+from . import Image, ImageFile
+from ._binary import i16le as i16
+from ._binary import o16le as o16
+
+#
+# read MSP files
+
+
+def _accept(prefix):
+    return prefix[:4] in [b"DanM", b"LinS"]
+
+
+##
+# Image plugin for Windows MSP images.  This plugin supports both
+# uncompressed (Windows 1.0).
+
+
+class MspImageFile(ImageFile.ImageFile):
+    format = "MSP"
+    format_description = "Windows Paint"
+
+    def _open(self):
+        # Header
+        s = self.fp.read(32)
+        if not _accept(s):
+            msg = "not an MSP file"
+            raise SyntaxError(msg)
+
+        # Header checksum
+        checksum = 0
+        for i in range(0, 32, 2):
+            checksum = checksum ^ i16(s, i)
+        if checksum != 0:
+            msg = "bad MSP checksum"
+            raise SyntaxError(msg)
+
+        self.mode = "1"
+        self._size = i16(s, 4), i16(s, 6)
+
+        if s[:4] == b"DanM":
+            self.tile = [("raw", (0, 0) + self.size, 32, ("1", 0, 1))]
+        else:
+            self.tile = [("MSP", (0, 0) + self.size, 32, None)]
+
+
+class MspDecoder(ImageFile.PyDecoder):
+    # The algo for the MSP decoder is from
+    # https://www.fileformat.info/format/mspaint/egff.htm
+    # cc-by-attribution -- That page references is taken from the
+    # Encyclopedia of Graphics File Formats and is licensed by
+    # O'Reilly under the Creative Common/Attribution license
+    #
+    # For RLE encoded files, the 32byte header is followed by a scan
+    # line map, encoded as one 16bit word of encoded byte length per
+    # line.
+    #
+    # NOTE: the encoded length of the line can be 0. This was not
+    # handled in the previous version of this encoder, and there's no
+    # mention of how to handle it in the documentation. From the few
+    # examples I've seen, I've assumed that it is a fill of the
+    # background color, in this case, white.
+    #
+    #
+    # Pseudocode of the decoder:
+    # Read a BYTE value as the RunType
+    #  If the RunType value is zero
+    #   Read next byte as the RunCount
+    #   Read the next byte as the RunValue
+    #   Write the RunValue byte RunCount times
+    #  If the RunType value is non-zero
+    #   Use this value as the RunCount
+    #   Read and write the next RunCount bytes literally
+    #
+    #  e.g.:
+    #  0x00 03 ff 05 00 01 02 03 04
+    #  would yield the bytes:
+    #  0xff ff ff 00 01 02 03 04
+    #
+    # which are then interpreted as a bit packed mode '1' image
+
+    _pulls_fd = True
+
+    def decode(self, buffer):
+        img = io.BytesIO()
+        blank_line = bytearray((0xFF,) * ((self.state.xsize + 7) // 8))
+        try:
+            self.fd.seek(32)
+            rowmap = struct.unpack_from(
+                f"<{self.state.ysize}H", self.fd.read(self.state.ysize * 2)
+            )
+        except struct.error as e:
+            msg = "Truncated MSP file in row map"
+            raise OSError(msg) from e
+
+        for x, rowlen in enumerate(rowmap):
+            try:
+                if rowlen == 0:
+                    img.write(blank_line)
+                    continue
+                row = self.fd.read(rowlen)
+                if len(row) != rowlen:
+                    msg = f"Truncated MSP file, expected {rowlen} bytes on row {x}"
+                    raise OSError(msg)
+                idx = 0
+                while idx < rowlen:
+                    runtype = row[idx]
+                    idx += 1
+                    if runtype == 0:
+                        (runcount, runval) = struct.unpack_from("Bc", row, idx)
+                        img.write(runval * runcount)
+                        idx += 2
+                    else:
+                        runcount = runtype
+                        img.write(row[idx : idx + runcount])
+                        idx += runcount
+
+            except struct.error as e:
+                msg = f"Corrupted MSP file in row {x}"
+                raise OSError(msg) from e
+
+        self.set_as_raw(img.getvalue(), ("1", 0, 1))
+
+        return -1, 0
+
+
+Image.register_decoder("MSP", MspDecoder)
+
+
+#
+# write MSP files (uncompressed only)
+
+
+def _save(im, fp, filename):
+    if im.mode != "1":
+        msg = f"cannot write mode {im.mode} as MSP"
+        raise OSError(msg)
+
+    # create MSP header
+    header = [0] * 16
+
+    header[0], header[1] = i16(b"Da"), i16(b"nM")  # version 1
+    header[2], header[3] = im.size
+    header[4], header[5] = 1, 1
+    header[6], header[7] = 1, 1
+    header[8], header[9] = im.size
+
+    checksum = 0
+    for h in header:
+        checksum = checksum ^ h
+    header[12] = checksum  # FIXME: is this the right field?
+
+    # header
+    for h in header:
+        fp.write(o16(h))
+
+    # image body
+    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 32, ("1", 0, 1))])
+
+
+#
+# registry
+
+Image.register_open(MspImageFile.format, MspImageFile, _accept)
+Image.register_save(MspImageFile.format, _save)
+
+Image.register_extension(MspImageFile.format, ".msp")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PSDraw.py

@@ -0,0 +1,229 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# Simple PostScript graphics interface
+#
+# History:
+# 1996-04-20 fl   Created
+# 1999-01-10 fl   Added gsave/grestore to image method
+# 2005-05-04 fl   Fixed floating point issue in image (from Eric Etheridge)
+#
+# Copyright (c) 1997-2005 by Secret Labs AB.  All rights reserved.
+# Copyright (c) 1996 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+import sys
+
+from . import EpsImagePlugin
+
+##
+# Simple PostScript graphics interface.
+
+
+class PSDraw:
+    """
+    Sets up printing to the given file. If ``fp`` is omitted,
+    ``sys.stdout.buffer`` or ``sys.stdout`` is assumed.
+    """
+
+    def __init__(self, fp=None):
+        if not fp:
+            try:
+                fp = sys.stdout.buffer
+            except AttributeError:
+                fp = sys.stdout
+        self.fp = fp
+
+    def begin_document(self, id=None):
+        """Set up printing of a document. (Write PostScript DSC header.)"""
+        # FIXME: incomplete
+        self.fp.write(
+            b"%!PS-Adobe-3.0\n"
+            b"save\n"
+            b"/showpage { } def\n"
+            b"%%EndComments\n"
+            b"%%BeginDocument\n"
+        )
+        # self.fp.write(ERROR_PS)  # debugging!
+        self.fp.write(EDROFF_PS)
+        self.fp.write(VDI_PS)
+        self.fp.write(b"%%EndProlog\n")
+        self.isofont = {}
+
+    def end_document(self):
+        """Ends printing. (Write PostScript DSC footer.)"""
+        self.fp.write(b"%%EndDocument\nrestore showpage\n%%End\n")
+        if hasattr(self.fp, "flush"):
+            self.fp.flush()
+
+    def setfont(self, font, size):
+        """
+        Selects which font to use.
+
+        :param font: A PostScript font name
+        :param size: Size in points.
+        """
+        font = bytes(font, "UTF-8")
+        if font not in self.isofont:
+            # reencode font
+            self.fp.write(b"/PSDraw-%s ISOLatin1Encoding /%s E\n" % (font, font))
+            self.isofont[font] = 1
+        # rough
+        self.fp.write(b"/F0 %d /PSDraw-%s F\n" % (size, font))
+
+    def line(self, xy0, xy1):
+        """
+        Draws a line between the two points. Coordinates are given in
+        PostScript point coordinates (72 points per inch, (0, 0) is the lower
+        left corner of the page).
+        """
+        self.fp.write(b"%d %d %d %d Vl\n" % (*xy0, *xy1))
+
+    def rectangle(self, box):
+        """
+        Draws a rectangle.
+
+        :param box: A tuple of four integers, specifying left, bottom, width and
+           height.
+        """
+        self.fp.write(b"%d %d M 0 %d %d Vr\n" % box)
+
+    def text(self, xy, text):
+        """
+        Draws text at the given position. You must use
+        :py:meth:`~PIL.PSDraw.PSDraw.setfont` before calling this method.
+        """
+        text = bytes(text, "UTF-8")
+        text = b"\\(".join(text.split(b"("))
+        text = b"\\)".join(text.split(b")"))
+        xy += (text,)
+        self.fp.write(b"%d %d M (%s) S\n" % xy)
+
+    def image(self, box, im, dpi=None):
+        """Draw a PIL image, centered in the given box."""
+        # default resolution depends on mode
+        if not dpi:
+            if im.mode == "1":
+                dpi = 200  # fax
+            else:
+                dpi = 100  # greyscale
+        # image size (on paper)
+        x = im.size[0] * 72 / dpi
+        y = im.size[1] * 72 / dpi
+        # max allowed size
+        xmax = float(box[2] - box[0])
+        ymax = float(box[3] - box[1])
+        if x > xmax:
+            y = y * xmax / x
+            x = xmax
+        if y > ymax:
+            x = x * ymax / y
+            y = ymax
+        dx = (xmax - x) / 2 + box[0]
+        dy = (ymax - y) / 2 + box[1]
+        self.fp.write(b"gsave\n%f %f translate\n" % (dx, dy))
+        if (x, y) != im.size:
+            # EpsImagePlugin._save prints the image at (0,0,xsize,ysize)
+            sx = x / im.size[0]
+            sy = y / im.size[1]
+            self.fp.write(b"%f %f scale\n" % (sx, sy))
+        EpsImagePlugin._save(im, self.fp, None, 0)
+        self.fp.write(b"\ngrestore\n")
+
+
+# --------------------------------------------------------------------
+# PostScript driver
+
+#
+# EDROFF.PS -- PostScript driver for Edroff 2
+#
+# History:
+# 94-01-25 fl: created (edroff 2.04)
+#
+# Copyright (c) Fredrik Lundh 1994.
+#
+
+
+EDROFF_PS = b"""\
+/S { show } bind def
+/P { moveto show } bind def
+/M { moveto } bind def
+/X { 0 rmoveto } bind def
+/Y { 0 exch rmoveto } bind def
+/E {    findfont
+        dup maxlength dict begin
+        {
+                1 index /FID ne { def } { pop pop } ifelse
+        } forall
+        /Encoding exch def
+        dup /FontName exch def
+        currentdict end definefont pop
+} bind def
+/F {    findfont exch scalefont dup setfont
+        [ exch /setfont cvx ] cvx bind def
+} bind def
+"""
+
+#
+# VDI.PS -- PostScript driver for VDI meta commands
+#
+# History:
+# 94-01-25 fl: created (edroff 2.04)
+#
+# Copyright (c) Fredrik Lundh 1994.
+#
+
+VDI_PS = b"""\
+/Vm { moveto } bind def
+/Va { newpath arcn stroke } bind def
+/Vl { moveto lineto stroke } bind def
+/Vc { newpath 0 360 arc closepath } bind def
+/Vr {   exch dup 0 rlineto
+        exch dup 0 exch rlineto
+        exch neg 0 rlineto
+        0 exch neg rlineto
+        setgray fill } bind def
+/Tm matrix def
+/Ve {   Tm currentmatrix pop
+        translate scale newpath 0 0 .5 0 360 arc closepath
+        Tm setmatrix
+} bind def
+/Vf { currentgray exch setgray fill setgray } bind def
+"""
+
+#
+# ERROR.PS -- Error handler
+#
+# History:
+# 89-11-21 fl: created (pslist 1.10)
+#
+
+ERROR_PS = b"""\
+/landscape false def
+/errorBUF 200 string def
+/errorNL { currentpoint 10 sub exch pop 72 exch moveto } def
+errordict begin /handleerror {
+    initmatrix /Courier findfont 10 scalefont setfont
+    newpath 72 720 moveto $error begin /newerror false def
+    (PostScript Error) show errorNL errorNL
+    (Error: ) show
+        /errorname load errorBUF cvs show errorNL errorNL
+    (Command: ) show
+        /command load dup type /stringtype ne { errorBUF cvs } if show
+        errorNL errorNL
+    (VMstatus: ) show
+        vmstatus errorBUF cvs show ( bytes available, ) show
+        errorBUF cvs show ( bytes used at level ) show
+        errorBUF cvs show errorNL errorNL
+    (Operand stargck: ) show errorNL /ostargck load {
+        dup type /stringtype ne { errorBUF cvs } if 72 0 rmoveto show errorNL
+    } forall errorNL
+    (Execution stargck: ) show errorNL /estargck load {
+        dup type /stringtype ne { errorBUF cvs } if 72 0 rmoveto show errorNL
+    } forall
+    end showpage
+} def end
+"""

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PaletteFile.py

@@ -0,0 +1,51 @@
+#
+# Python Imaging Library
+# $Id$
+#
+# stuff to read simple, teragon-style palette files
+#
+# History:
+#       97-08-23 fl     Created
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1997.
+#
+# See the README file for information on usage and redistribution.
+#
+
+from ._binary import o8
+
+
+class PaletteFile:
+    """File handler for Teragon-style palette files."""
+
+    rawmode = "RGB"
+
+    def __init__(self, fp):
+        self.palette = [(i, i, i) for i in range(256)]
+
+        while True:
+            s = fp.readline()
+
+            if not s:
+                break
+            if s[:1] == b"#":
+                continue
+            if len(s) > 100:
+                msg = "bad palette file"
+                raise SyntaxError(msg)
+
+            v = [int(x) for x in s.split()]
+            try:
+                [i, r, g, b] = v
+            except ValueError:
+                [i, r] = v
+                g = b = r
+
+            if 0 <= i <= 255:
+                self.palette[i] = o8(r) + o8(g) + o8(b)
+
+        self.palette = b"".join(self.palette)
+
+    def getpalette(self):
+        return self.palette, self.rawmode

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PalmImagePlugin.py

@@ -0,0 +1,225 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+
+##
+# Image plugin for Palm pixmap images (output only).
+##
+
+from . import Image, ImageFile
+from ._binary import o8
+from ._binary import o16be as o16b
+
+# fmt: off
+_Palm8BitColormapValues = (
+    (255, 255, 255), (255, 204, 255), (255, 153, 255), (255, 102, 255),
+    (255,  51, 255), (255,   0, 255), (255, 255, 204), (255, 204, 204),
+    (255, 153, 204), (255, 102, 204), (255,  51, 204), (255,   0, 204),
+    (255, 255, 153), (255, 204, 153), (255, 153, 153), (255, 102, 153),
+    (255,  51, 153), (255,   0, 153), (204, 255, 255), (204, 204, 255),
+    (204, 153, 255), (204, 102, 255), (204,  51, 255), (204,   0, 255),
+    (204, 255, 204), (204, 204, 204), (204, 153, 204), (204, 102, 204),
+    (204,  51, 204), (204,   0, 204), (204, 255, 153), (204, 204, 153),
+    (204, 153, 153), (204, 102, 153), (204,  51, 153), (204,   0, 153),
+    (153, 255, 255), (153, 204, 255), (153, 153, 255), (153, 102, 255),
+    (153,  51, 255), (153,   0, 255), (153, 255, 204), (153, 204, 204),
+    (153, 153, 204), (153, 102, 204), (153,  51, 204), (153,   0, 204),
+    (153, 255, 153), (153, 204, 153), (153, 153, 153), (153, 102, 153),
+    (153,  51, 153), (153,   0, 153), (102, 255, 255), (102, 204, 255),
+    (102, 153, 255), (102, 102, 255), (102,  51, 255), (102,   0, 255),
+    (102, 255, 204), (102, 204, 204), (102, 153, 204), (102, 102, 204),
+    (102,  51, 204), (102,   0, 204), (102, 255, 153), (102, 204, 153),
+    (102, 153, 153), (102, 102, 153), (102,  51, 153), (102,   0, 153),
+    (51,  255, 255), (51,  204, 255), (51,  153, 255), (51,  102, 255),
+    (51,   51, 255), (51,    0, 255), (51,  255, 204), (51,  204, 204),
+    (51,  153, 204), (51,  102, 204), (51,   51, 204), (51,    0, 204),
+    (51,  255, 153), (51,  204, 153), (51,  153, 153), (51,  102, 153),
+    (51,   51, 153), (51,    0, 153), (0,   255, 255), (0,   204, 255),
+    (0,   153, 255), (0,   102, 255), (0,    51, 255), (0,     0, 255),
+    (0,   255, 204), (0,   204, 204), (0,   153, 204), (0,   102, 204),
+    (0,    51, 204), (0,     0, 204), (0,   255, 153), (0,   204, 153),
+    (0,   153, 153), (0,   102, 153), (0,    51, 153), (0,     0, 153),
+    (255, 255, 102), (255, 204, 102), (255, 153, 102), (255, 102, 102),
+    (255,  51, 102), (255,   0, 102), (255, 255,  51), (255, 204,  51),
+    (255, 153,  51), (255, 102,  51), (255,  51,  51), (255,   0,  51),
+    (255, 255,   0), (255, 204,   0), (255, 153,   0), (255, 102,   0),
+    (255,  51,   0), (255,   0,   0), (204, 255, 102), (204, 204, 102),
+    (204, 153, 102), (204, 102, 102), (204,  51, 102), (204,   0, 102),
+    (204, 255,  51), (204, 204,  51), (204, 153,  51), (204, 102,  51),
+    (204,  51,  51), (204,   0,  51), (204, 255,   0), (204, 204,   0),
+    (204, 153,   0), (204, 102,   0), (204,  51,   0), (204,   0,   0),
+    (153, 255, 102), (153, 204, 102), (153, 153, 102), (153, 102, 102),
+    (153,  51, 102), (153,   0, 102), (153, 255,  51), (153, 204,  51),
+    (153, 153,  51), (153, 102,  51), (153,  51,  51), (153,   0,  51),
+    (153, 255,   0), (153, 204,   0), (153, 153,   0), (153, 102,   0),
+    (153,  51,   0), (153,   0,   0), (102, 255, 102), (102, 204, 102),
+    (102, 153, 102), (102, 102, 102), (102,  51, 102), (102,   0, 102),
+    (102, 255,  51), (102, 204,  51), (102, 153,  51), (102, 102,  51),
+    (102,  51,  51), (102,   0,  51), (102, 255,   0), (102, 204,   0),
+    (102, 153,   0), (102, 102,   0), (102,  51,   0), (102,   0,   0),
+    (51,  255, 102), (51,  204, 102), (51,  153, 102), (51,  102, 102),
+    (51,   51, 102), (51,    0, 102), (51,  255,  51), (51,  204,  51),
+    (51,  153,  51), (51,  102,  51), (51,   51,  51), (51,    0,  51),
+    (51,  255,   0), (51,  204,   0), (51,  153,   0), (51,  102,   0),
+    (51,   51,   0), (51,    0,   0), (0,   255, 102), (0,   204, 102),
+    (0,   153, 102), (0,   102, 102), (0,    51, 102), (0,     0, 102),
+    (0,   255,  51), (0,   204,  51), (0,   153,  51), (0,   102,  51),
+    (0,    51,  51), (0,     0,  51), (0,   255,   0), (0,   204,   0),
+    (0,   153,   0), (0,   102,   0), (0,    51,   0), (17,   17,  17),
+    (34,   34,  34), (68,   68,  68), (85,   85,  85), (119, 119, 119),
+    (136, 136, 136), (170, 170, 170), (187, 187, 187), (221, 221, 221),
+    (238, 238, 238), (192, 192, 192), (128,   0,   0), (128,   0, 128),
+    (0,   128,   0), (0,   128, 128), (0,     0,   0), (0,     0,   0),
+    (0,     0,   0), (0,     0,   0), (0,     0,   0), (0,     0,   0),
+    (0,     0,   0), (0,     0,   0), (0,     0,   0), (0,     0,   0),
+    (0,     0,   0), (0,     0,   0), (0,     0,   0), (0,     0,   0),
+    (0,     0,   0), (0,     0,   0), (0,     0,   0), (0,     0,   0),
+    (0,     0,   0), (0,     0,   0), (0,     0,   0), (0,     0,   0),
+    (0,     0,   0), (0,     0,   0), (0,     0,   0), (0,     0,   0))
+# fmt: on
+
+
+# so build a prototype image to be used for palette resampling
+def build_prototype_image():
+    image = Image.new("L", (1, len(_Palm8BitColormapValues)))
+    image.putdata(list(range(len(_Palm8BitColormapValues))))
+    palettedata = ()
+    for colormapValue in _Palm8BitColormapValues:
+        palettedata += colormapValue
+    palettedata += (0, 0, 0) * (256 - len(_Palm8BitColormapValues))
+    image.putpalette(palettedata)
+    return image
+
+
+Palm8BitColormapImage = build_prototype_image()
+
+# OK, we now have in Palm8BitColormapImage,
+# a "P"-mode image with the right palette
+#
+# --------------------------------------------------------------------
+
+_FLAGS = {"custom-colormap": 0x4000, "is-compressed": 0x8000, "has-transparent": 0x2000}
+
+_COMPRESSION_TYPES = {"none": 0xFF, "rle": 0x01, "scanline": 0x00}
+
+
+#
+# --------------------------------------------------------------------
+
+##
+# (Internal) Image save plugin for the Palm format.
+
+
+def _save(im, fp, filename):
+    if im.mode == "P":
+        # we assume this is a color Palm image with the standard colormap,
+        # unless the "info" dict has a "custom-colormap" field
+
+        rawmode = "P"
+        bpp = 8
+        version = 1
+
+    elif im.mode == "L":
+        if im.encoderinfo.get("bpp") in (1, 2, 4):
+            # this is 8-bit grayscale, so we shift it to get the high-order bits,
+            # and invert it because
+            # Palm does greyscale from white (0) to black (1)
+            bpp = im.encoderinfo["bpp"]
+            im = im.point(
+                lambda x, shift=8 - bpp, maxval=(1 << bpp) - 1: maxval - (x >> shift)
+            )
+        elif im.info.get("bpp") in (1, 2, 4):
+            # here we assume that even though the inherent mode is 8-bit grayscale,
+            # only the lower bpp bits are significant.
+            # We invert them to match the Palm.
+            bpp = im.info["bpp"]
+            im = im.point(lambda x, maxval=(1 << bpp) - 1: maxval - (x & maxval))
+        else:
+            msg = f"cannot write mode {im.mode} as Palm"
+            raise OSError(msg)
+
+        # we ignore the palette here
+        im.mode = "P"
+        rawmode = "P;" + str(bpp)
+        version = 1
+
+    elif im.mode == "1":
+        # monochrome -- write it inverted, as is the Palm standard
+        rawmode = "1;I"
+        bpp = 1
+        version = 0
+
+    else:
+        msg = f"cannot write mode {im.mode} as Palm"
+        raise OSError(msg)
+
+    #
+    # make sure image data is available
+    im.load()
+
+    # write header
+
+    cols = im.size[0]
+    rows = im.size[1]
+
+    rowbytes = int((cols + (16 // bpp - 1)) / (16 // bpp)) * 2
+    transparent_index = 0
+    compression_type = _COMPRESSION_TYPES["none"]
+
+    flags = 0
+    if im.mode == "P" and "custom-colormap" in im.info:
+        flags = flags & _FLAGS["custom-colormap"]
+        colormapsize = 4 * 256 + 2
+        colormapmode = im.palette.mode
+        colormap = im.getdata().getpalette()
+    else:
+        colormapsize = 0
+
+    if "offset" in im.info:
+        offset = (rowbytes * rows + 16 + 3 + colormapsize) // 4
+    else:
+        offset = 0
+
+    fp.write(o16b(cols) + o16b(rows) + o16b(rowbytes) + o16b(flags))
+    fp.write(o8(bpp))
+    fp.write(o8(version))
+    fp.write(o16b(offset))
+    fp.write(o8(transparent_index))
+    fp.write(o8(compression_type))
+    fp.write(o16b(0))  # reserved by Palm
+
+    # now write colormap if necessary
+
+    if colormapsize > 0:
+        fp.write(o16b(256))
+        for i in range(256):
+            fp.write(o8(i))
+            if colormapmode == "RGB":
+                fp.write(
+                    o8(colormap[3 * i])
+                    + o8(colormap[3 * i + 1])
+                    + o8(colormap[3 * i + 2])
+                )
+            elif colormapmode == "RGBA":
+                fp.write(
+                    o8(colormap[4 * i])
+                    + o8(colormap[4 * i + 1])
+                    + o8(colormap[4 * i + 2])
+                )
+
+    # now convert data to raw form
+    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, rowbytes, 1))])
+
+    if hasattr(fp, "flush"):
+        fp.flush()
+
+
+#
+# --------------------------------------------------------------------
+
+Image.register_save("Palm", _save)
+
+Image.register_extension("Palm", ".palm")
+
+Image.register_mime("Palm", "image/palm")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PcdImagePlugin.py

@@ -0,0 +1,62 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# PCD file handling
+#
+# History:
+#       96-05-10 fl     Created
+#       96-05-27 fl     Added draft mode (128x192, 256x384)
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1996.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+from . import Image, ImageFile
+
+##
+# Image plugin for PhotoCD images.  This plugin only reads the 768x512
+# image from the file; higher resolutions are encoded in a proprietary
+# encoding.
+
+
+class PcdImageFile(ImageFile.ImageFile):
+    format = "PCD"
+    format_description = "Kodak PhotoCD"
+
+    def _open(self):
+        # rough
+        self.fp.seek(2048)
+        s = self.fp.read(2048)
+
+        if s[:4] != b"PCD_":
+            msg = "not a PCD file"
+            raise SyntaxError(msg)
+
+        orientation = s[1538] & 3
+        self.tile_post_rotate = None
+        if orientation == 1:
+            self.tile_post_rotate = 90
+        elif orientation == 3:
+            self.tile_post_rotate = -90
+
+        self.mode = "RGB"
+        self._size = 768, 512  # FIXME: not correct for rotated images!
+        self.tile = [("pcd", (0, 0) + self.size, 96 * 2048, None)]
+
+    def load_end(self):
+        if self.tile_post_rotate:
+            # Handle rotated PCDs
+            self.im = self.im.rotate(self.tile_post_rotate)
+            self._size = self.im.size
+
+
+#
+# registry
+
+Image.register_open(PcdImageFile.format, PcdImageFile)
+
+Image.register_extension(PcdImageFile.format, ".pcd")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PcfFontFile.py

@@ -0,0 +1,256 @@
+#
+# THIS IS WORK IN PROGRESS
+#
+# The Python Imaging Library
+# $Id$
+#
+# portable compiled font file parser
+#
+# history:
+# 1997-08-19 fl   created
+# 2003-09-13 fl   fixed loading of unicode fonts
+#
+# Copyright (c) 1997-2003 by Secret Labs AB.
+# Copyright (c) 1997-2003 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+import io
+
+from . import FontFile, Image
+from ._binary import i8
+from ._binary import i16be as b16
+from ._binary import i16le as l16
+from ._binary import i32be as b32
+from ._binary import i32le as l32
+
+# --------------------------------------------------------------------
+# declarations
+
+PCF_MAGIC = 0x70636601  # "\x01fcp"
+
+PCF_PROPERTIES = 1 << 0
+PCF_ACCELERATORS = 1 << 1
+PCF_METRICS = 1 << 2
+PCF_BITMAPS = 1 << 3
+PCF_INK_METRICS = 1 << 4
+PCF_BDF_ENCODINGS = 1 << 5
+PCF_SWIDTHS = 1 << 6
+PCF_GLYPH_NAMES = 1 << 7
+PCF_BDF_ACCELERATORS = 1 << 8
+
+BYTES_PER_ROW = [
+    lambda bits: ((bits + 7) >> 3),
+    lambda bits: ((bits + 15) >> 3) & ~1,
+    lambda bits: ((bits + 31) >> 3) & ~3,
+    lambda bits: ((bits + 63) >> 3) & ~7,
+]
+
+
+def sz(s, o):
+    return s[o : s.index(b"\0", o)]
+
+
+class PcfFontFile(FontFile.FontFile):
+    """Font file plugin for the X11 PCF format."""
+
+    name = "name"
+
+    def __init__(self, fp, charset_encoding="iso8859-1"):
+        self.charset_encoding = charset_encoding
+
+        magic = l32(fp.read(4))
+        if magic != PCF_MAGIC:
+            msg = "not a PCF file"
+            raise SyntaxError(msg)
+
+        super().__init__()
+
+        count = l32(fp.read(4))
+        self.toc = {}
+        for i in range(count):
+            type = l32(fp.read(4))
+            self.toc[type] = l32(fp.read(4)), l32(fp.read(4)), l32(fp.read(4))
+
+        self.fp = fp
+
+        self.info = self._load_properties()
+
+        metrics = self._load_metrics()
+        bitmaps = self._load_bitmaps(metrics)
+        encoding = self._load_encoding()
+
+        #
+        # create glyph structure
+
+        for ch, ix in enumerate(encoding):
+            if ix is not None:
+                (
+                    xsize,
+                    ysize,
+                    left,
+                    right,
+                    width,
+                    ascent,
+                    descent,
+                    attributes,
+                ) = metrics[ix]
+                self.glyph[ch] = (
+                    (width, 0),
+                    (left, descent - ysize, xsize + left, descent),
+                    (0, 0, xsize, ysize),
+                    bitmaps[ix],
+                )
+
+    def _getformat(self, tag):
+        format, size, offset = self.toc[tag]
+
+        fp = self.fp
+        fp.seek(offset)
+
+        format = l32(fp.read(4))
+
+        if format & 4:
+            i16, i32 = b16, b32
+        else:
+            i16, i32 = l16, l32
+
+        return fp, format, i16, i32
+
+    def _load_properties(self):
+        #
+        # font properties
+
+        properties = {}
+
+        fp, format, i16, i32 = self._getformat(PCF_PROPERTIES)
+
+        nprops = i32(fp.read(4))
+
+        # read property description
+        p = []
+        for i in range(nprops):
+            p.append((i32(fp.read(4)), i8(fp.read(1)), i32(fp.read(4))))
+        if nprops & 3:
+            fp.seek(4 - (nprops & 3), io.SEEK_CUR)  # pad
+
+        data = fp.read(i32(fp.read(4)))
+
+        for k, s, v in p:
+            k = sz(data, k)
+            if s:
+                v = sz(data, v)
+            properties[k] = v
+
+        return properties
+
+    def _load_metrics(self):
+        #
+        # font metrics
+
+        metrics = []
+
+        fp, format, i16, i32 = self._getformat(PCF_METRICS)
+
+        append = metrics.append
+
+        if (format & 0xFF00) == 0x100:
+            # "compressed" metrics
+            for i in range(i16(fp.read(2))):
+                left = i8(fp.read(1)) - 128
+                right = i8(fp.read(1)) - 128
+                width = i8(fp.read(1)) - 128
+                ascent = i8(fp.read(1)) - 128
+                descent = i8(fp.read(1)) - 128
+                xsize = right - left
+                ysize = ascent + descent
+                append((xsize, ysize, left, right, width, ascent, descent, 0))
+
+        else:
+            # "jumbo" metrics
+            for i in range(i32(fp.read(4))):
+                left = i16(fp.read(2))
+                right = i16(fp.read(2))
+                width = i16(fp.read(2))
+                ascent = i16(fp.read(2))
+                descent = i16(fp.read(2))
+                attributes = i16(fp.read(2))
+                xsize = right - left
+                ysize = ascent + descent
+                append((xsize, ysize, left, right, width, ascent, descent, attributes))
+
+        return metrics
+
+    def _load_bitmaps(self, metrics):
+        #
+        # bitmap data
+
+        bitmaps = []
+
+        fp, format, i16, i32 = self._getformat(PCF_BITMAPS)
+
+        nbitmaps = i32(fp.read(4))
+
+        if nbitmaps != len(metrics):
+            msg = "Wrong number of bitmaps"
+            raise OSError(msg)
+
+        offsets = []
+        for i in range(nbitmaps):
+            offsets.append(i32(fp.read(4)))
+
+        bitmap_sizes = []
+        for i in range(4):
+            bitmap_sizes.append(i32(fp.read(4)))
+
+        # byteorder = format & 4  # non-zero => MSB
+        bitorder = format & 8  # non-zero => MSB
+        padindex = format & 3
+
+        bitmapsize = bitmap_sizes[padindex]
+        offsets.append(bitmapsize)
+
+        data = fp.read(bitmapsize)
+
+        pad = BYTES_PER_ROW[padindex]
+        mode = "1;R"
+        if bitorder:
+            mode = "1"
+
+        for i in range(nbitmaps):
+            xsize, ysize = metrics[i][:2]
+            b, e = offsets[i : i + 2]
+            bitmaps.append(
+                Image.frombytes("1", (xsize, ysize), data[b:e], "raw", mode, pad(xsize))
+            )
+
+        return bitmaps
+
+    def _load_encoding(self):
+        fp, format, i16, i32 = self._getformat(PCF_BDF_ENCODINGS)
+
+        first_col, last_col = i16(fp.read(2)), i16(fp.read(2))
+        first_row, last_row = i16(fp.read(2)), i16(fp.read(2))
+
+        i16(fp.read(2))  # default
+
+        nencoding = (last_col - first_col + 1) * (last_row - first_row + 1)
+
+        # map character code to bitmap index
+        encoding = [None] * min(256, nencoding)
+
+        encoding_offsets = [i16(fp.read(2)) for _ in range(nencoding)]
+
+        for i in range(first_col, len(encoding)):
+            try:
+                encoding_offset = encoding_offsets[
+                    ord(bytearray([i]).decode(self.charset_encoding))
+                ]
+                if encoding_offset != 0xFFFF:
+                    encoding[i] = encoding_offset
+            except UnicodeDecodeError:
+                # character is not supported in selected encoding
+                pass
+
+        return encoding

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PcxImagePlugin.py

@@ -0,0 +1,221 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# PCX file handling
+#
+# This format was originally used by ZSoft's popular PaintBrush
+# program for the IBM PC.  It is also supported by many MS-DOS and
+# Windows applications, including the Windows PaintBrush program in
+# Windows 3.
+#
+# history:
+# 1995-09-01 fl   Created
+# 1996-05-20 fl   Fixed RGB support
+# 1997-01-03 fl   Fixed 2-bit and 4-bit support
+# 1999-02-03 fl   Fixed 8-bit support (broken in 1.0b1)
+# 1999-02-07 fl   Added write support
+# 2002-06-09 fl   Made 2-bit and 4-bit support a bit more robust
+# 2002-07-30 fl   Seek from to current position, not beginning of file
+# 2003-06-03 fl   Extract DPI settings (info["dpi"])
+#
+# Copyright (c) 1997-2003 by Secret Labs AB.
+# Copyright (c) 1995-2003 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+import io
+import logging
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import i16le as i16
+from ._binary import o8
+from ._binary import o16le as o16
+
+logger = logging.getLogger(__name__)
+
+
+def _accept(prefix):
+    return prefix[0] == 10 and prefix[1] in [0, 2, 3, 5]
+
+
+##
+# Image plugin for Paintbrush images.
+
+
+class PcxImageFile(ImageFile.ImageFile):
+    format = "PCX"
+    format_description = "Paintbrush"
+
+    def _open(self):
+        # header
+        s = self.fp.read(128)
+        if not _accept(s):
+            msg = "not a PCX file"
+            raise SyntaxError(msg)
+
+        # image
+        bbox = i16(s, 4), i16(s, 6), i16(s, 8) + 1, i16(s, 10) + 1
+        if bbox[2] <= bbox[0] or bbox[3] <= bbox[1]:
+            msg = "bad PCX image size"
+            raise SyntaxError(msg)
+        logger.debug("BBox: %s %s %s %s", *bbox)
+
+        # format
+        version = s[1]
+        bits = s[3]
+        planes = s[65]
+        provided_stride = i16(s, 66)
+        logger.debug(
+            "PCX version %s, bits %s, planes %s, stride %s",
+            version,
+            bits,
+            planes,
+            provided_stride,
+        )
+
+        self.info["dpi"] = i16(s, 12), i16(s, 14)
+
+        if bits == 1 and planes == 1:
+            mode = rawmode = "1"
+
+        elif bits == 1 and planes in (2, 4):
+            mode = "P"
+            rawmode = "P;%dL" % planes
+            self.palette = ImagePalette.raw("RGB", s[16:64])
+
+        elif version == 5 and bits == 8 and planes == 1:
+            mode = rawmode = "L"
+            # FIXME: hey, this doesn't work with the incremental loader !!!
+            self.fp.seek(-769, io.SEEK_END)
+            s = self.fp.read(769)
+            if len(s) == 769 and s[0] == 12:
+                # check if the palette is linear greyscale
+                for i in range(256):
+                    if s[i * 3 + 1 : i * 3 + 4] != o8(i) * 3:
+                        mode = rawmode = "P"
+                        break
+                if mode == "P":
+                    self.palette = ImagePalette.raw("RGB", s[1:])
+            self.fp.seek(128)
+
+        elif version == 5 and bits == 8 and planes == 3:
+            mode = "RGB"
+            rawmode = "RGB;L"
+
+        else:
+            msg = "unknown PCX mode"
+            raise OSError(msg)
+
+        self.mode = mode
+        self._size = bbox[2] - bbox[0], bbox[3] - bbox[1]
+
+        # Don't trust the passed in stride.
+        # Calculate the approximate position for ourselves.
+        # CVE-2020-35653
+        stride = (self._size[0] * bits + 7) // 8
+
+        # While the specification states that this must be even,
+        # not all images follow this
+        if provided_stride != stride:
+            stride += stride % 2
+
+        bbox = (0, 0) + self.size
+        logger.debug("size: %sx%s", *self.size)
+
+        self.tile = [("pcx", bbox, self.fp.tell(), (rawmode, planes * stride))]
+
+
+# --------------------------------------------------------------------
+# save PCX files
+
+
+SAVE = {
+    # mode: (version, bits, planes, raw mode)
+    "1": (2, 1, 1, "1"),
+    "L": (5, 8, 1, "L"),
+    "P": (5, 8, 1, "P"),
+    "RGB": (5, 8, 3, "RGB;L"),
+}
+
+
+def _save(im, fp, filename):
+    try:
+        version, bits, planes, rawmode = SAVE[im.mode]
+    except KeyError as e:
+        msg = f"Cannot save {im.mode} images as PCX"
+        raise ValueError(msg) from e
+
+    # bytes per plane
+    stride = (im.size[0] * bits + 7) // 8
+    # stride should be even
+    stride += stride % 2
+    # Stride needs to be kept in sync with the PcxEncode.c version.
+    # Ideally it should be passed in in the state, but the bytes value
+    # gets overwritten.
+
+    logger.debug(
+        "PcxImagePlugin._save: xwidth: %d, bits: %d, stride: %d",
+        im.size[0],
+        bits,
+        stride,
+    )
+
+    # under windows, we could determine the current screen size with
+    # "Image.core.display_mode()[1]", but I think that's overkill...
+
+    screen = im.size
+
+    dpi = 100, 100
+
+    # PCX header
+    fp.write(
+        o8(10)
+        + o8(version)
+        + o8(1)
+        + o8(bits)
+        + o16(0)
+        + o16(0)
+        + o16(im.size[0] - 1)
+        + o16(im.size[1] - 1)
+        + o16(dpi[0])
+        + o16(dpi[1])
+        + b"\0" * 24
+        + b"\xFF" * 24
+        + b"\0"
+        + o8(planes)
+        + o16(stride)
+        + o16(1)
+        + o16(screen[0])
+        + o16(screen[1])
+        + b"\0" * 54
+    )
+
+    assert fp.tell() == 128
+
+    ImageFile._save(im, fp, [("pcx", (0, 0) + im.size, 0, (rawmode, bits * planes))])
+
+    if im.mode == "P":
+        # colour palette
+        fp.write(o8(12))
+        palette = im.im.getpalette("RGB", "RGB")
+        palette += b"\x00" * (768 - len(palette))
+        fp.write(palette)  # 768 bytes
+    elif im.mode == "L":
+        # greyscale palette
+        fp.write(o8(12))
+        for i in range(256):
+            fp.write(o8(i) * 3)
+
+
+# --------------------------------------------------------------------
+# registry
+
+
+Image.register_open(PcxImageFile.format, PcxImageFile, _accept)
+Image.register_save(PcxImageFile.format, _save)
+
+Image.register_extension(PcxImageFile.format, ".pcx")
+
+Image.register_mime(PcxImageFile.format, "image/x-pcx")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PdfImagePlugin.py

@@ -0,0 +1,284 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# PDF (Acrobat) file handling
+#
+# History:
+# 1996-07-16 fl   Created
+# 1997-01-18 fl   Fixed header
+# 2004-02-21 fl   Fixes for 1/L/CMYK images, etc.
+# 2004-02-24 fl   Fixes for 1 and P images.
+#
+# Copyright (c) 1997-2004 by Secret Labs AB.  All rights reserved.
+# Copyright (c) 1996-1997 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+##
+# Image plugin for PDF images (output only).
+##
+
+import io
+import math
+import os
+import time
+
+from . import Image, ImageFile, ImageSequence, PdfParser, __version__, features
+
+#
+# --------------------------------------------------------------------
+
+# object ids:
+#  1. catalogue
+#  2. pages
+#  3. image
+#  4. page
+#  5. page contents
+
+
+def _save_all(im, fp, filename):
+    _save(im, fp, filename, save_all=True)
+
+
+##
+# (Internal) Image save plugin for the PDF format.
+
+
+def _save(im, fp, filename, save_all=False):
+    is_appending = im.encoderinfo.get("append", False)
+    if is_appending:
+        existing_pdf = PdfParser.PdfParser(f=fp, filename=filename, mode="r+b")
+    else:
+        existing_pdf = PdfParser.PdfParser(f=fp, filename=filename, mode="w+b")
+
+    dpi = im.encoderinfo.get("dpi")
+    if dpi:
+        x_resolution = dpi[0]
+        y_resolution = dpi[1]
+    else:
+        x_resolution = y_resolution = im.encoderinfo.get("resolution", 72.0)
+
+    info = {
+        "title": None
+        if is_appending
+        else os.path.splitext(os.path.basename(filename))[0],
+        "author": None,
+        "subject": None,
+        "keywords": None,
+        "creator": None,
+        "producer": None,
+        "creationDate": None if is_appending else time.gmtime(),
+        "modDate": None if is_appending else time.gmtime(),
+    }
+    for k, default in info.items():
+        v = im.encoderinfo.get(k) if k in im.encoderinfo else default
+        if v:
+            existing_pdf.info[k[0].upper() + k[1:]] = v
+
+    #
+    # make sure image data is available
+    im.load()
+
+    existing_pdf.start_writing()
+    existing_pdf.write_header()
+    existing_pdf.write_comment(f"created by Pillow {__version__} PDF driver")
+
+    #
+    # pages
+    ims = [im]
+    if save_all:
+        append_images = im.encoderinfo.get("append_images", [])
+        for append_im in append_images:
+            append_im.encoderinfo = im.encoderinfo.copy()
+            ims.append(append_im)
+    number_of_pages = 0
+    image_refs = []
+    page_refs = []
+    contents_refs = []
+    for im in ims:
+        im_number_of_pages = 1
+        if save_all:
+            try:
+                im_number_of_pages = im.n_frames
+            except AttributeError:
+                # Image format does not have n_frames.
+                # It is a single frame image
+                pass
+        number_of_pages += im_number_of_pages
+        for i in range(im_number_of_pages):
+            image_refs.append(existing_pdf.next_object_id(0))
+            page_refs.append(existing_pdf.next_object_id(0))
+            contents_refs.append(existing_pdf.next_object_id(0))
+            existing_pdf.pages.append(page_refs[-1])
+
+    #
+    # catalog and list of pages
+    existing_pdf.write_catalog()
+
+    page_number = 0
+    for im_sequence in ims:
+        im_pages = ImageSequence.Iterator(im_sequence) if save_all else [im_sequence]
+        for im in im_pages:
+            # FIXME: Should replace ASCIIHexDecode with RunLengthDecode
+            # (packbits) or LZWDecode (tiff/lzw compression).  Note that
+            # PDF 1.2 also supports Flatedecode (zip compression).
+
+            bits = 8
+            params = None
+            decode = None
+
+            #
+            # Get image characteristics
+
+            width, height = im.size
+
+            if im.mode == "1":
+                if features.check("libtiff"):
+                    filter = "CCITTFaxDecode"
+                    bits = 1
+                    params = PdfParser.PdfArray(
+                        [
+                            PdfParser.PdfDict(
+                                {
+                                    "K": -1,
+                                    "BlackIs1": True,
+                                    "Columns": width,
+                                    "Rows": height,
+                                }
+                            )
+                        ]
+                    )
+                else:
+                    filter = "DCTDecode"
+                colorspace = PdfParser.PdfName("DeviceGray")
+                procset = "ImageB"  # grayscale
+            elif im.mode == "L":
+                filter = "DCTDecode"
+                # params = f"<< /Predictor 15 /Columns {width-2} >>"
+                colorspace = PdfParser.PdfName("DeviceGray")
+                procset = "ImageB"  # grayscale
+            elif im.mode == "P":
+                filter = "ASCIIHexDecode"
+                palette = im.getpalette()
+                colorspace = [
+                    PdfParser.PdfName("Indexed"),
+                    PdfParser.PdfName("DeviceRGB"),
+                    255,
+                    PdfParser.PdfBinary(palette),
+                ]
+                procset = "ImageI"  # indexed color
+            elif im.mode == "RGB":
+                filter = "DCTDecode"
+                colorspace = PdfParser.PdfName("DeviceRGB")
+                procset = "ImageC"  # color images
+            elif im.mode == "RGBA":
+                filter = "JPXDecode"
+                colorspace = PdfParser.PdfName("DeviceRGB")
+                procset = "ImageC"  # color images
+            elif im.mode == "CMYK":
+                filter = "DCTDecode"
+                colorspace = PdfParser.PdfName("DeviceCMYK")
+                procset = "ImageC"  # color images
+                decode = [1, 0, 1, 0, 1, 0, 1, 0]
+            else:
+                msg = f"cannot save mode {im.mode}"
+                raise ValueError(msg)
+
+            #
+            # image
+
+            op = io.BytesIO()
+
+            if filter == "ASCIIHexDecode":
+                ImageFile._save(im, op, [("hex", (0, 0) + im.size, 0, im.mode)])
+            elif filter == "CCITTFaxDecode":
+                im.save(
+                    op,
+                    "TIFF",
+                    compression="group4",
+                    # use a single strip
+                    strip_size=math.ceil(im.width / 8) * im.height,
+                )
+            elif filter == "DCTDecode":
+                Image.SAVE["JPEG"](im, op, filename)
+            elif filter == "JPXDecode":
+                Image.SAVE["JPEG2000"](im, op, filename)
+            elif filter == "FlateDecode":
+                ImageFile._save(im, op, [("zip", (0, 0) + im.size, 0, im.mode)])
+            elif filter == "RunLengthDecode":
+                ImageFile._save(im, op, [("packbits", (0, 0) + im.size, 0, im.mode)])
+            else:
+                msg = f"unsupported PDF filter ({filter})"
+                raise ValueError(msg)
+
+            stream = op.getvalue()
+            if filter == "CCITTFaxDecode":
+                stream = stream[8:]
+                filter = PdfParser.PdfArray([PdfParser.PdfName(filter)])
+            else:
+                filter = PdfParser.PdfName(filter)
+
+            existing_pdf.write_obj(
+                image_refs[page_number],
+                stream=stream,
+                Type=PdfParser.PdfName("XObject"),
+                Subtype=PdfParser.PdfName("Image"),
+                Width=width,  # * 72.0 / x_resolution,
+                Height=height,  # * 72.0 / y_resolution,
+                Filter=filter,
+                BitsPerComponent=bits,
+                Decode=decode,
+                DecodeParms=params,
+                ColorSpace=colorspace,
+            )
+
+            #
+            # page
+
+            existing_pdf.write_page(
+                page_refs[page_number],
+                Resources=PdfParser.PdfDict(
+                    ProcSet=[PdfParser.PdfName("PDF"), PdfParser.PdfName(procset)],
+                    XObject=PdfParser.PdfDict(image=image_refs[page_number]),
+                ),
+                MediaBox=[
+                    0,
+                    0,
+                    width * 72.0 / x_resolution,
+                    height * 72.0 / y_resolution,
+                ],
+                Contents=contents_refs[page_number],
+            )
+
+            #
+            # page contents
+
+            page_contents = b"q %f 0 0 %f 0 0 cm /image Do Q\n" % (
+                width * 72.0 / x_resolution,
+                height * 72.0 / y_resolution,
+            )
+
+            existing_pdf.write_obj(contents_refs[page_number], stream=page_contents)
+
+            page_number += 1
+
+    #
+    # trailer
+    existing_pdf.write_xref_and_trailer()
+    if hasattr(fp, "flush"):
+        fp.flush()
+    existing_pdf.close()
+
+
+#
+# --------------------------------------------------------------------
+
+
+Image.register_save("PDF", _save)
+Image.register_save_all("PDF", _save_all)
+
+Image.register_extension("PDF", ".pdf")
+
+Image.register_mime("PDF", "application/pdf")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PdfParser.py

@@ -0,0 +1,996 @@
+import calendar
+import codecs
+import collections
+import mmap
+import os
+import re
+import time
+import zlib
+
+
+# see 7.9.2.2 Text String Type on page 86 and D.3 PDFDocEncoding Character Set
+# on page 656
+def encode_text(s):
+    return codecs.BOM_UTF16_BE + s.encode("utf_16_be")
+
+
+PDFDocEncoding = {
+    0x16: "\u0017",
+    0x18: "\u02D8",
+    0x19: "\u02C7",
+    0x1A: "\u02C6",
+    0x1B: "\u02D9",
+    0x1C: "\u02DD",
+    0x1D: "\u02DB",
+    0x1E: "\u02DA",
+    0x1F: "\u02DC",
+    0x80: "\u2022",
+    0x81: "\u2020",
+    0x82: "\u2021",
+    0x83: "\u2026",
+    0x84: "\u2014",
+    0x85: "\u2013",
+    0x86: "\u0192",
+    0x87: "\u2044",
+    0x88: "\u2039",
+    0x89: "\u203A",
+    0x8A: "\u2212",
+    0x8B: "\u2030",
+    0x8C: "\u201E",
+    0x8D: "\u201C",
+    0x8E: "\u201D",
+    0x8F: "\u2018",
+    0x90: "\u2019",
+    0x91: "\u201A",
+    0x92: "\u2122",
+    0x93: "\uFB01",
+    0x94: "\uFB02",
+    0x95: "\u0141",
+    0x96: "\u0152",
+    0x97: "\u0160",
+    0x98: "\u0178",
+    0x99: "\u017D",
+    0x9A: "\u0131",
+    0x9B: "\u0142",
+    0x9C: "\u0153",
+    0x9D: "\u0161",
+    0x9E: "\u017E",
+    0xA0: "\u20AC",
+}
+
+
+def decode_text(b):
+    if b[: len(codecs.BOM_UTF16_BE)] == codecs.BOM_UTF16_BE:
+        return b[len(codecs.BOM_UTF16_BE) :].decode("utf_16_be")
+    else:
+        return "".join(PDFDocEncoding.get(byte, chr(byte)) for byte in b)
+
+
+class PdfFormatError(RuntimeError):
+    """An error that probably indicates a syntactic or semantic error in the
+    PDF file structure"""
+
+    pass
+
+
+def check_format_condition(condition, error_message):
+    if not condition:
+        raise PdfFormatError(error_message)
+
+
+class IndirectReference(
+    collections.namedtuple("IndirectReferenceTuple", ["object_id", "generation"])
+):
+    def __str__(self):
+        return "%s %s R" % self
+
+    def __bytes__(self):
+        return self.__str__().encode("us-ascii")
+
+    def __eq__(self, other):
+        return (
+            other.__class__ is self.__class__
+            and other.object_id == self.object_id
+            and other.generation == self.generation
+        )
+
+    def __ne__(self, other):
+        return not (self == other)
+
+    def __hash__(self):
+        return hash((self.object_id, self.generation))
+
+
+class IndirectObjectDef(IndirectReference):
+    def __str__(self):
+        return "%s %s obj" % self
+
+
+class XrefTable:
+    def __init__(self):
+        self.existing_entries = {}  # object ID => (offset, generation)
+        self.new_entries = {}  # object ID => (offset, generation)
+        self.deleted_entries = {0: 65536}  # object ID => generation
+        self.reading_finished = False
+
+    def __setitem__(self, key, value):
+        if self.reading_finished:
+            self.new_entries[key] = value
+        else:
+            self.existing_entries[key] = value
+        if key in self.deleted_entries:
+            del self.deleted_entries[key]
+
+    def __getitem__(self, key):
+        try:
+            return self.new_entries[key]
+        except KeyError:
+            return self.existing_entries[key]
+
+    def __delitem__(self, key):
+        if key in self.new_entries:
+            generation = self.new_entries[key][1] + 1
+            del self.new_entries[key]
+            self.deleted_entries[key] = generation
+        elif key in self.existing_entries:
+            generation = self.existing_entries[key][1] + 1
+            self.deleted_entries[key] = generation
+        elif key in self.deleted_entries:
+            generation = self.deleted_entries[key]
+        else:
+            msg = (
+                "object ID " + str(key) + " cannot be deleted because it doesn't exist"
+            )
+            raise IndexError(msg)
+
+    def __contains__(self, key):
+        return key in self.existing_entries or key in self.new_entries
+
+    def __len__(self):
+        return len(
+            set(self.existing_entries.keys())
+            | set(self.new_entries.keys())
+            | set(self.deleted_entries.keys())
+        )
+
+    def keys(self):
+        return (
+            set(self.existing_entries.keys()) - set(self.deleted_entries.keys())
+        ) | set(self.new_entries.keys())
+
+    def write(self, f):
+        keys = sorted(set(self.new_entries.keys()) | set(self.deleted_entries.keys()))
+        deleted_keys = sorted(set(self.deleted_entries.keys()))
+        startxref = f.tell()
+        f.write(b"xref\n")
+        while keys:
+            # find a contiguous sequence of object IDs
+            prev = None
+            for index, key in enumerate(keys):
+                if prev is None or prev + 1 == key:
+                    prev = key
+                else:
+                    contiguous_keys = keys[:index]
+                    keys = keys[index:]
+                    break
+            else:
+                contiguous_keys = keys
+                keys = None
+            f.write(b"%d %d\n" % (contiguous_keys[0], len(contiguous_keys)))
+            for object_id in contiguous_keys:
+                if object_id in self.new_entries:
+                    f.write(b"%010d %05d n \n" % self.new_entries[object_id])
+                else:
+                    this_deleted_object_id = deleted_keys.pop(0)
+                    check_format_condition(
+                        object_id == this_deleted_object_id,
+                        f"expected the next deleted object ID to be {object_id}, "
+                        f"instead found {this_deleted_object_id}",
+                    )
+                    try:
+                        next_in_linked_list = deleted_keys[0]
+                    except IndexError:
+                        next_in_linked_list = 0
+                    f.write(
+                        b"%010d %05d f \n"
+                        % (next_in_linked_list, self.deleted_entries[object_id])
+                    )
+        return startxref
+
+
+class PdfName:
+    def __init__(self, name):
+        if isinstance(name, PdfName):
+            self.name = name.name
+        elif isinstance(name, bytes):
+            self.name = name
+        else:
+            self.name = name.encode("us-ascii")
+
+    def name_as_str(self):
+        return self.name.decode("us-ascii")
+
+    def __eq__(self, other):
+        return (
+            isinstance(other, PdfName) and other.name == self.name
+        ) or other == self.name
+
+    def __hash__(self):
+        return hash(self.name)
+
+    def __repr__(self):
+        return f"PdfName({repr(self.name)})"
+
+    @classmethod
+    def from_pdf_stream(cls, data):
+        return cls(PdfParser.interpret_name(data))
+
+    allowed_chars = set(range(33, 127)) - {ord(c) for c in "#%/()<>[]{}"}
+
+    def __bytes__(self):
+        result = bytearray(b"/")
+        for b in self.name:
+            if b in self.allowed_chars:
+                result.append(b)
+            else:
+                result.extend(b"#%02X" % b)
+        return bytes(result)
+
+
+class PdfArray(list):
+    def __bytes__(self):
+        return b"[ " + b" ".join(pdf_repr(x) for x in self) + b" ]"
+
+
+class PdfDict(collections.UserDict):
+    def __setattr__(self, key, value):
+        if key == "data":
+            collections.UserDict.__setattr__(self, key, value)
+        else:
+            self[key.encode("us-ascii")] = value
+
+    def __getattr__(self, key):
+        try:
+            value = self[key.encode("us-ascii")]
+        except KeyError as e:
+            raise AttributeError(key) from e
+        if isinstance(value, bytes):
+            value = decode_text(value)
+        if key.endswith("Date"):
+            if value.startswith("D:"):
+                value = value[2:]
+
+            relationship = "Z"
+            if len(value) > 17:
+                relationship = value[14]
+                offset = int(value[15:17]) * 60
+                if len(value) > 20:
+                    offset += int(value[18:20])
+
+            format = "%Y%m%d%H%M%S"[: len(value) - 2]
+            value = time.strptime(value[: len(format) + 2], format)
+            if relationship in ["+", "-"]:
+                offset *= 60
+                if relationship == "+":
+                    offset *= -1
+                value = time.gmtime(calendar.timegm(value) + offset)
+        return value
+
+    def __bytes__(self):
+        out = bytearray(b"<<")
+        for key, value in self.items():
+            if value is None:
+                continue
+            value = pdf_repr(value)
+            out.extend(b"\n")
+            out.extend(bytes(PdfName(key)))
+            out.extend(b" ")
+            out.extend(value)
+        out.extend(b"\n>>")
+        return bytes(out)
+
+
+class PdfBinary:
+    def __init__(self, data):
+        self.data = data
+
+    def __bytes__(self):
+        return b"<%s>" % b"".join(b"%02X" % b for b in self.data)
+
+
+class PdfStream:
+    def __init__(self, dictionary, buf):
+        self.dictionary = dictionary
+        self.buf = buf
+
+    def decode(self):
+        try:
+            filter = self.dictionary.Filter
+        except AttributeError:
+            return self.buf
+        if filter == b"FlateDecode":
+            try:
+                expected_length = self.dictionary.DL
+            except AttributeError:
+                expected_length = self.dictionary.Length
+            return zlib.decompress(self.buf, bufsize=int(expected_length))
+        else:
+            msg = f"stream filter {repr(self.dictionary.Filter)} unknown/unsupported"
+            raise NotImplementedError(msg)
+
+
+def pdf_repr(x):
+    if x is True:
+        return b"true"
+    elif x is False:
+        return b"false"
+    elif x is None:
+        return b"null"
+    elif isinstance(x, (PdfName, PdfDict, PdfArray, PdfBinary)):
+        return bytes(x)
+    elif isinstance(x, (int, float)):
+        return str(x).encode("us-ascii")
+    elif isinstance(x, time.struct_time):
+        return b"(D:" + time.strftime("%Y%m%d%H%M%SZ", x).encode("us-ascii") + b")"
+    elif isinstance(x, dict):
+        return bytes(PdfDict(x))
+    elif isinstance(x, list):
+        return bytes(PdfArray(x))
+    elif isinstance(x, str):
+        return pdf_repr(encode_text(x))
+    elif isinstance(x, bytes):
+        # XXX escape more chars? handle binary garbage
+        x = x.replace(b"\\", b"\\\\")
+        x = x.replace(b"(", b"\\(")
+        x = x.replace(b")", b"\\)")
+        return b"(" + x + b")"
+    else:
+        return bytes(x)
+
+
+class PdfParser:
+    """Based on
+    https://www.adobe.com/content/dam/acom/en/devnet/acrobat/pdfs/PDF32000_2008.pdf
+    Supports PDF up to 1.4
+    """
+
+    def __init__(self, filename=None, f=None, buf=None, start_offset=0, mode="rb"):
+        if buf and f:
+            msg = "specify buf or f or filename, but not both buf and f"
+            raise RuntimeError(msg)
+        self.filename = filename
+        self.buf = buf
+        self.f = f
+        self.start_offset = start_offset
+        self.should_close_buf = False
+        self.should_close_file = False
+        if filename is not None and f is None:
+            self.f = f = open(filename, mode)
+            self.should_close_file = True
+        if f is not None:
+            self.buf = buf = self.get_buf_from_file(f)
+            self.should_close_buf = True
+            if not filename and hasattr(f, "name"):
+                self.filename = f.name
+        self.cached_objects = {}
+        if buf:
+            self.read_pdf_info()
+        else:
+            self.file_size_total = self.file_size_this = 0
+            self.root = PdfDict()
+            self.root_ref = None
+            self.info = PdfDict()
+            self.info_ref = None
+            self.page_tree_root = {}
+            self.pages = []
+            self.orig_pages = []
+            self.pages_ref = None
+            self.last_xref_section_offset = None
+            self.trailer_dict = {}
+            self.xref_table = XrefTable()
+        self.xref_table.reading_finished = True
+        if f:
+            self.seek_end()
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        self.close()
+        return False  # do not suppress exceptions
+
+    def start_writing(self):
+        self.close_buf()
+        self.seek_end()
+
+    def close_buf(self):
+        try:
+            self.buf.close()
+        except AttributeError:
+            pass
+        self.buf = None
+
+    def close(self):
+        if self.should_close_buf:
+            self.close_buf()
+        if self.f is not None and self.should_close_file:
+            self.f.close()
+            self.f = None
+
+    def seek_end(self):
+        self.f.seek(0, os.SEEK_END)
+
+    def write_header(self):
+        self.f.write(b"%PDF-1.4\n")
+
+    def write_comment(self, s):
+        self.f.write(f"% {s}\n".encode())
+
+    def write_catalog(self):
+        self.del_root()
+        self.root_ref = self.next_object_id(self.f.tell())
+        self.pages_ref = self.next_object_id(0)
+        self.rewrite_pages()
+        self.write_obj(self.root_ref, Type=PdfName(b"Catalog"), Pages=self.pages_ref)
+        self.write_obj(
+            self.pages_ref,
+            Type=PdfName(b"Pages"),
+            Count=len(self.pages),
+            Kids=self.pages,
+        )
+        return self.root_ref
+
+    def rewrite_pages(self):
+        pages_tree_nodes_to_delete = []
+        for i, page_ref in enumerate(self.orig_pages):
+            page_info = self.cached_objects[page_ref]
+            del self.xref_table[page_ref.object_id]
+            pages_tree_nodes_to_delete.append(page_info[PdfName(b"Parent")])
+            if page_ref not in self.pages:
+                # the page has been deleted
+                continue
+            # make dict keys into strings for passing to write_page
+            stringified_page_info = {}
+            for key, value in page_info.items():
+                # key should be a PdfName
+                stringified_page_info[key.name_as_str()] = value
+            stringified_page_info["Parent"] = self.pages_ref
+            new_page_ref = self.write_page(None, **stringified_page_info)
+            for j, cur_page_ref in enumerate(self.pages):
+                if cur_page_ref == page_ref:
+                    # replace the page reference with the new one
+                    self.pages[j] = new_page_ref
+        # delete redundant Pages tree nodes from xref table
+        for pages_tree_node_ref in pages_tree_nodes_to_delete:
+            while pages_tree_node_ref:
+                pages_tree_node = self.cached_objects[pages_tree_node_ref]
+                if pages_tree_node_ref.object_id in self.xref_table:
+                    del self.xref_table[pages_tree_node_ref.object_id]
+                pages_tree_node_ref = pages_tree_node.get(b"Parent", None)
+        self.orig_pages = []
+
+    def write_xref_and_trailer(self, new_root_ref=None):
+        if new_root_ref:
+            self.del_root()
+            self.root_ref = new_root_ref
+        if self.info:
+            self.info_ref = self.write_obj(None, self.info)
+        start_xref = self.xref_table.write(self.f)
+        num_entries = len(self.xref_table)
+        trailer_dict = {b"Root": self.root_ref, b"Size": num_entries}
+        if self.last_xref_section_offset is not None:
+            trailer_dict[b"Prev"] = self.last_xref_section_offset
+        if self.info:
+            trailer_dict[b"Info"] = self.info_ref
+        self.last_xref_section_offset = start_xref
+        self.f.write(
+            b"trailer\n"
+            + bytes(PdfDict(trailer_dict))
+            + b"\nstartxref\n%d\n%%%%EOF" % start_xref
+        )
+
+    def write_page(self, ref, *objs, **dict_obj):
+        if isinstance(ref, int):
+            ref = self.pages[ref]
+        if "Type" not in dict_obj:
+            dict_obj["Type"] = PdfName(b"Page")
+        if "Parent" not in dict_obj:
+            dict_obj["Parent"] = self.pages_ref
+        return self.write_obj(ref, *objs, **dict_obj)
+
+    def write_obj(self, ref, *objs, **dict_obj):
+        f = self.f
+        if ref is None:
+            ref = self.next_object_id(f.tell())
+        else:
+            self.xref_table[ref.object_id] = (f.tell(), ref.generation)
+        f.write(bytes(IndirectObjectDef(*ref)))
+        stream = dict_obj.pop("stream", None)
+        if stream is not None:
+            dict_obj["Length"] = len(stream)
+        if dict_obj:
+            f.write(pdf_repr(dict_obj))
+        for obj in objs:
+            f.write(pdf_repr(obj))
+        if stream is not None:
+            f.write(b"stream\n")
+            f.write(stream)
+            f.write(b"\nendstream\n")
+        f.write(b"endobj\n")
+        return ref
+
+    def del_root(self):
+        if self.root_ref is None:
+            return
+        del self.xref_table[self.root_ref.object_id]
+        del self.xref_table[self.root[b"Pages"].object_id]
+
+    @staticmethod
+    def get_buf_from_file(f):
+        if hasattr(f, "getbuffer"):
+            return f.getbuffer()
+        elif hasattr(f, "getvalue"):
+            return f.getvalue()
+        else:
+            try:
+                return mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)
+            except ValueError:  # cannot mmap an empty file
+                return b""
+
+    def read_pdf_info(self):
+        self.file_size_total = len(self.buf)
+        self.file_size_this = self.file_size_total - self.start_offset
+        self.read_trailer()
+        self.root_ref = self.trailer_dict[b"Root"]
+        self.info_ref = self.trailer_dict.get(b"Info", None)
+        self.root = PdfDict(self.read_indirect(self.root_ref))
+        if self.info_ref is None:
+            self.info = PdfDict()
+        else:
+            self.info = PdfDict(self.read_indirect(self.info_ref))
+        check_format_condition(b"Type" in self.root, "/Type missing in Root")
+        check_format_condition(
+            self.root[b"Type"] == b"Catalog", "/Type in Root is not /Catalog"
+        )
+        check_format_condition(b"Pages" in self.root, "/Pages missing in Root")
+        check_format_condition(
+            isinstance(self.root[b"Pages"], IndirectReference),
+            "/Pages in Root is not an indirect reference",
+        )
+        self.pages_ref = self.root[b"Pages"]
+        self.page_tree_root = self.read_indirect(self.pages_ref)
+        self.pages = self.linearize_page_tree(self.page_tree_root)
+        # save the original list of page references
+        # in case the user modifies, adds or deletes some pages
+        # and we need to rewrite the pages and their list
+        self.orig_pages = self.pages[:]
+
+    def next_object_id(self, offset=None):
+        try:
+            # TODO: support reuse of deleted objects
+            reference = IndirectReference(max(self.xref_table.keys()) + 1, 0)
+        except ValueError:
+            reference = IndirectReference(1, 0)
+        if offset is not None:
+            self.xref_table[reference.object_id] = (offset, 0)
+        return reference
+
+    delimiter = rb"[][()<>{}/%]"
+    delimiter_or_ws = rb"[][()<>{}/%\000\011\012\014\015\040]"
+    whitespace = rb"[\000\011\012\014\015\040]"
+    whitespace_or_hex = rb"[\000\011\012\014\015\0400-9a-fA-F]"
+    whitespace_optional = whitespace + b"*"
+    whitespace_mandatory = whitespace + b"+"
+    # No "\012" aka "\n" or "\015" aka "\r":
+    whitespace_optional_no_nl = rb"[\000\011\014\040]*"
+    newline_only = rb"[\r\n]+"
+    newline = whitespace_optional_no_nl + newline_only + whitespace_optional_no_nl
+    re_trailer_end = re.compile(
+        whitespace_mandatory
+        + rb"trailer"
+        + whitespace_optional
+        + rb"<<(.*>>)"
+        + newline
+        + rb"startxref"
+        + newline
+        + rb"([0-9]+)"
+        + newline
+        + rb"%%EOF"
+        + whitespace_optional
+        + rb"$",
+        re.DOTALL,
+    )
+    re_trailer_prev = re.compile(
+        whitespace_optional
+        + rb"trailer"
+        + whitespace_optional
+        + rb"<<(.*?>>)"
+        + newline
+        + rb"startxref"
+        + newline
+        + rb"([0-9]+)"
+        + newline
+        + rb"%%EOF"
+        + whitespace_optional,
+        re.DOTALL,
+    )
+
+    def read_trailer(self):
+        search_start_offset = len(self.buf) - 16384
+        if search_start_offset < self.start_offset:
+            search_start_offset = self.start_offset
+        m = self.re_trailer_end.search(self.buf, search_start_offset)
+        check_format_condition(m, "trailer end not found")
+        # make sure we found the LAST trailer
+        last_match = m
+        while m:
+            last_match = m
+            m = self.re_trailer_end.search(self.buf, m.start() + 16)
+        if not m:
+            m = last_match
+        trailer_data = m.group(1)
+        self.last_xref_section_offset = int(m.group(2))
+        self.trailer_dict = self.interpret_trailer(trailer_data)
+        self.xref_table = XrefTable()
+        self.read_xref_table(xref_section_offset=self.last_xref_section_offset)
+        if b"Prev" in self.trailer_dict:
+            self.read_prev_trailer(self.trailer_dict[b"Prev"])
+
+    def read_prev_trailer(self, xref_section_offset):
+        trailer_offset = self.read_xref_table(xref_section_offset=xref_section_offset)
+        m = self.re_trailer_prev.search(
+            self.buf[trailer_offset : trailer_offset + 16384]
+        )
+        check_format_condition(m, "previous trailer not found")
+        trailer_data = m.group(1)
+        check_format_condition(
+            int(m.group(2)) == xref_section_offset,
+            "xref section offset in previous trailer doesn't match what was expected",
+        )
+        trailer_dict = self.interpret_trailer(trailer_data)
+        if b"Prev" in trailer_dict:
+            self.read_prev_trailer(trailer_dict[b"Prev"])
+
+    re_whitespace_optional = re.compile(whitespace_optional)
+    re_name = re.compile(
+        whitespace_optional
+        + rb"/([!-$&'*-.0-;=?-Z\\^-z|~]+)(?="
+        + delimiter_or_ws
+        + rb")"
+    )
+    re_dict_start = re.compile(whitespace_optional + rb"<<")
+    re_dict_end = re.compile(whitespace_optional + rb">>" + whitespace_optional)
+
+    @classmethod
+    def interpret_trailer(cls, trailer_data):
+        trailer = {}
+        offset = 0
+        while True:
+            m = cls.re_name.match(trailer_data, offset)
+            if not m:
+                m = cls.re_dict_end.match(trailer_data, offset)
+                check_format_condition(
+                    m and m.end() == len(trailer_data),
+                    "name not found in trailer, remaining data: "
+                    + repr(trailer_data[offset:]),
+                )
+                break
+            key = cls.interpret_name(m.group(1))
+            value, offset = cls.get_value(trailer_data, m.end())
+            trailer[key] = value
+        check_format_condition(
+            b"Size" in trailer and isinstance(trailer[b"Size"], int),
+            "/Size not in trailer or not an integer",
+        )
+        check_format_condition(
+            b"Root" in trailer and isinstance(trailer[b"Root"], IndirectReference),
+            "/Root not in trailer or not an indirect reference",
+        )
+        return trailer
+
+    re_hashes_in_name = re.compile(rb"([^#]*)(#([0-9a-fA-F]{2}))?")
+
+    @classmethod
+    def interpret_name(cls, raw, as_text=False):
+        name = b""
+        for m in cls.re_hashes_in_name.finditer(raw):
+            if m.group(3):
+                name += m.group(1) + bytearray.fromhex(m.group(3).decode("us-ascii"))
+            else:
+                name += m.group(1)
+        if as_text:
+            return name.decode("utf-8")
+        else:
+            return bytes(name)
+
+    re_null = re.compile(whitespace_optional + rb"null(?=" + delimiter_or_ws + rb")")
+    re_true = re.compile(whitespace_optional + rb"true(?=" + delimiter_or_ws + rb")")
+    re_false = re.compile(whitespace_optional + rb"false(?=" + delimiter_or_ws + rb")")
+    re_int = re.compile(
+        whitespace_optional + rb"([-+]?[0-9]+)(?=" + delimiter_or_ws + rb")"
+    )
+    re_real = re.compile(
+        whitespace_optional
+        + rb"([-+]?([0-9]+\.[0-9]*|[0-9]*\.[0-9]+))(?="
+        + delimiter_or_ws
+        + rb")"
+    )
+    re_array_start = re.compile(whitespace_optional + rb"\[")
+    re_array_end = re.compile(whitespace_optional + rb"]")
+    re_string_hex = re.compile(
+        whitespace_optional + rb"<(" + whitespace_or_hex + rb"*)>"
+    )
+    re_string_lit = re.compile(whitespace_optional + rb"\(")
+    re_indirect_reference = re.compile(
+        whitespace_optional
+        + rb"([-+]?[0-9]+)"
+        + whitespace_mandatory
+        + rb"([-+]?[0-9]+)"
+        + whitespace_mandatory
+        + rb"R(?="
+        + delimiter_or_ws
+        + rb")"
+    )
+    re_indirect_def_start = re.compile(
+        whitespace_optional
+        + rb"([-+]?[0-9]+)"
+        + whitespace_mandatory
+        + rb"([-+]?[0-9]+)"
+        + whitespace_mandatory
+        + rb"obj(?="
+        + delimiter_or_ws
+        + rb")"
+    )
+    re_indirect_def_end = re.compile(
+        whitespace_optional + rb"endobj(?=" + delimiter_or_ws + rb")"
+    )
+    re_comment = re.compile(
+        rb"(" + whitespace_optional + rb"%[^\r\n]*" + newline + rb")*"
+    )
+    re_stream_start = re.compile(whitespace_optional + rb"stream\r?\n")
+    re_stream_end = re.compile(
+        whitespace_optional + rb"endstream(?=" + delimiter_or_ws + rb")"
+    )
+
+    @classmethod
+    def get_value(cls, data, offset, expect_indirect=None, max_nesting=-1):
+        if max_nesting == 0:
+            return None, None
+        m = cls.re_comment.match(data, offset)
+        if m:
+            offset = m.end()
+        m = cls.re_indirect_def_start.match(data, offset)
+        if m:
+            check_format_condition(
+                int(m.group(1)) > 0,
+                "indirect object definition: object ID must be greater than 0",
+            )
+            check_format_condition(
+                int(m.group(2)) >= 0,
+                "indirect object definition: generation must be non-negative",
+            )
+            check_format_condition(
+                expect_indirect is None
+                or expect_indirect
+                == IndirectReference(int(m.group(1)), int(m.group(2))),
+                "indirect object definition different than expected",
+            )
+            object, offset = cls.get_value(data, m.end(), max_nesting=max_nesting - 1)
+            if offset is None:
+                return object, None
+            m = cls.re_indirect_def_end.match(data, offset)
+            check_format_condition(m, "indirect object definition end not found")
+            return object, m.end()
+        check_format_condition(
+            not expect_indirect, "indirect object definition not found"
+        )
+        m = cls.re_indirect_reference.match(data, offset)
+        if m:
+            check_format_condition(
+                int(m.group(1)) > 0,
+                "indirect object reference: object ID must be greater than 0",
+            )
+            check_format_condition(
+                int(m.group(2)) >= 0,
+                "indirect object reference: generation must be non-negative",
+            )
+            return IndirectReference(int(m.group(1)), int(m.group(2))), m.end()
+        m = cls.re_dict_start.match(data, offset)
+        if m:
+            offset = m.end()
+            result = {}
+            m = cls.re_dict_end.match(data, offset)
+            while not m:
+                key, offset = cls.get_value(data, offset, max_nesting=max_nesting - 1)
+                if offset is None:
+                    return result, None
+                value, offset = cls.get_value(data, offset, max_nesting=max_nesting - 1)
+                result[key] = value
+                if offset is None:
+                    return result, None
+                m = cls.re_dict_end.match(data, offset)
+            offset = m.end()
+            m = cls.re_stream_start.match(data, offset)
+            if m:
+                try:
+                    stream_len = int(result[b"Length"])
+                except (TypeError, KeyError, ValueError) as e:
+                    msg = "bad or missing Length in stream dict (%r)" % result.get(
+                        b"Length", None
+                    )
+                    raise PdfFormatError(msg) from e
+                stream_data = data[m.end() : m.end() + stream_len]
+                m = cls.re_stream_end.match(data, m.end() + stream_len)
+                check_format_condition(m, "stream end not found")
+                offset = m.end()
+                result = PdfStream(PdfDict(result), stream_data)
+            else:
+                result = PdfDict(result)
+            return result, offset
+        m = cls.re_array_start.match(data, offset)
+        if m:
+            offset = m.end()
+            result = []
+            m = cls.re_array_end.match(data, offset)
+            while not m:
+                value, offset = cls.get_value(data, offset, max_nesting=max_nesting - 1)
+                result.append(value)
+                if offset is None:
+                    return result, None
+                m = cls.re_array_end.match(data, offset)
+            return result, m.end()
+        m = cls.re_null.match(data, offset)
+        if m:
+            return None, m.end()
+        m = cls.re_true.match(data, offset)
+        if m:
+            return True, m.end()
+        m = cls.re_false.match(data, offset)
+        if m:
+            return False, m.end()
+        m = cls.re_name.match(data, offset)
+        if m:
+            return PdfName(cls.interpret_name(m.group(1))), m.end()
+        m = cls.re_int.match(data, offset)
+        if m:
+            return int(m.group(1)), m.end()
+        m = cls.re_real.match(data, offset)
+        if m:
+            # XXX Decimal instead of float???
+            return float(m.group(1)), m.end()
+        m = cls.re_string_hex.match(data, offset)
+        if m:
+            # filter out whitespace
+            hex_string = bytearray(
+                b for b in m.group(1) if b in b"0123456789abcdefABCDEF"
+            )
+            if len(hex_string) % 2 == 1:
+                # append a 0 if the length is not even - yes, at the end
+                hex_string.append(ord(b"0"))
+            return bytearray.fromhex(hex_string.decode("us-ascii")), m.end()
+        m = cls.re_string_lit.match(data, offset)
+        if m:
+            return cls.get_literal_string(data, m.end())
+        # return None, offset  # fallback (only for debugging)
+        msg = "unrecognized object: " + repr(data[offset : offset + 32])
+        raise PdfFormatError(msg)
+
+    re_lit_str_token = re.compile(
+        rb"(\\[nrtbf()\\])|(\\[0-9]{1,3})|(\\(\r\n|\r|\n))|(\r\n|\r|\n)|(\()|(\))"
+    )
+    escaped_chars = {
+        b"n": b"\n",
+        b"r": b"\r",
+        b"t": b"\t",
+        b"b": b"\b",
+        b"f": b"\f",
+        b"(": b"(",
+        b")": b")",
+        b"\\": b"\\",
+        ord(b"n"): b"\n",
+        ord(b"r"): b"\r",
+        ord(b"t"): b"\t",
+        ord(b"b"): b"\b",
+        ord(b"f"): b"\f",
+        ord(b"("): b"(",
+        ord(b")"): b")",
+        ord(b"\\"): b"\\",
+    }
+
+    @classmethod
+    def get_literal_string(cls, data, offset):
+        nesting_depth = 0
+        result = bytearray()
+        for m in cls.re_lit_str_token.finditer(data, offset):
+            result.extend(data[offset : m.start()])
+            if m.group(1):
+                result.extend(cls.escaped_chars[m.group(1)[1]])
+            elif m.group(2):
+                result.append(int(m.group(2)[1:], 8))
+            elif m.group(3):
+                pass
+            elif m.group(5):
+                result.extend(b"\n")
+            elif m.group(6):
+                result.extend(b"(")
+                nesting_depth += 1
+            elif m.group(7):
+                if nesting_depth == 0:
+                    return bytes(result), m.end()
+                result.extend(b")")
+                nesting_depth -= 1
+            offset = m.end()
+        msg = "unfinished literal string"
+        raise PdfFormatError(msg)
+
+    re_xref_section_start = re.compile(whitespace_optional + rb"xref" + newline)
+    re_xref_subsection_start = re.compile(
+        whitespace_optional
+        + rb"([0-9]+)"
+        + whitespace_mandatory
+        + rb"([0-9]+)"
+        + whitespace_optional
+        + newline_only
+    )
+    re_xref_entry = re.compile(rb"([0-9]{10}) ([0-9]{5}) ([fn])( \r| \n|\r\n)")
+
+    def read_xref_table(self, xref_section_offset):
+        subsection_found = False
+        m = self.re_xref_section_start.match(
+            self.buf, xref_section_offset + self.start_offset
+        )
+        check_format_condition(m, "xref section start not found")
+        offset = m.end()
+        while True:
+            m = self.re_xref_subsection_start.match(self.buf, offset)
+            if not m:
+                check_format_condition(
+                    subsection_found, "xref subsection start not found"
+                )
+                break
+            subsection_found = True
+            offset = m.end()
+            first_object = int(m.group(1))
+            num_objects = int(m.group(2))
+            for i in range(first_object, first_object + num_objects):
+                m = self.re_xref_entry.match(self.buf, offset)
+                check_format_condition(m, "xref entry not found")
+                offset = m.end()
+                is_free = m.group(3) == b"f"
+                if not is_free:
+                    generation = int(m.group(2))
+                    new_entry = (int(m.group(1)), generation)
+                    if i not in self.xref_table:
+                        self.xref_table[i] = new_entry
+        return offset
+
+    def read_indirect(self, ref, max_nesting=-1):
+        offset, generation = self.xref_table[ref[0]]
+        check_format_condition(
+            generation == ref[1],
+            f"expected to find generation {ref[1]} for object ID {ref[0]} in xref "
+            f"table, instead found generation {generation} at offset {offset}",
+        )
+        value = self.get_value(
+            self.buf,
+            offset + self.start_offset,
+            expect_indirect=IndirectReference(*ref),
+            max_nesting=max_nesting,
+        )[0]
+        self.cached_objects[ref] = value
+        return value
+
+    def linearize_page_tree(self, node=None):
+        if node is None:
+            node = self.page_tree_root
+        check_format_condition(
+            node[b"Type"] == b"Pages", "/Type of page tree node is not /Pages"
+        )
+        pages = []
+        for kid in node[b"Kids"]:
+            kid_object = self.read_indirect(kid)
+            if kid_object[b"Type"] == b"Page":
+                pages.append(kid)
+            else:
+                pages.extend(self.linearize_page_tree(node=kid_object))
+        return pages

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PixarImagePlugin.py

@@ -0,0 +1,69 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# PIXAR raster support for PIL
+#
+# history:
+#       97-01-29 fl     Created
+#
+# notes:
+#       This is incomplete; it is based on a few samples created with
+#       Photoshop 2.5 and 3.0, and a summary description provided by
+#       Greg Coats <gcoats@labiris.er.usgs.gov>.  Hopefully, "L" and
+#       "RGBA" support will be added in future versions.
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1997.
+#
+# See the README file for information on usage and redistribution.
+#
+
+from . import Image, ImageFile
+from ._binary import i16le as i16
+
+#
+# helpers
+
+
+def _accept(prefix):
+    return prefix[:4] == b"\200\350\000\000"
+
+
+##
+# Image plugin for PIXAR raster images.
+
+
+class PixarImageFile(ImageFile.ImageFile):
+    format = "PIXAR"
+    format_description = "PIXAR raster image"
+
+    def _open(self):
+        # assuming a 4-byte magic label
+        s = self.fp.read(4)
+        if not _accept(s):
+            msg = "not a PIXAR file"
+            raise SyntaxError(msg)
+
+        # read rest of header
+        s = s + self.fp.read(508)
+
+        self._size = i16(s, 418), i16(s, 416)
+
+        # get channel/depth descriptions
+        mode = i16(s, 424), i16(s, 426)
+
+        if mode == (14, 2):
+            self.mode = "RGB"
+        # FIXME: to be continued...
+
+        # create tile descriptor (assuming "dumped")
+        self.tile = [("raw", (0, 0) + self.size, 1024, (self.mode, 0, 1))]
+
+
+#
+# --------------------------------------------------------------------
+
+Image.register_open(PixarImageFile.format, PixarImageFile, _accept)
+
+Image.register_extension(PixarImageFile.format, ".pxr")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PpmImagePlugin.py

@@ -0,0 +1,347 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# PPM support for PIL
+#
+# History:
+#       96-03-24 fl     Created
+#       98-03-06 fl     Write RGBA images (as RGB, that is)
+#
+# Copyright (c) Secret Labs AB 1997-98.
+# Copyright (c) Fredrik Lundh 1996.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+from . import Image, ImageFile
+from ._binary import i16be as i16
+from ._binary import o8
+from ._binary import o32le as o32
+
+#
+# --------------------------------------------------------------------
+
+b_whitespace = b"\x20\x09\x0a\x0b\x0c\x0d"
+
+MODES = {
+    # standard
+    b"P1": "1",
+    b"P2": "L",
+    b"P3": "RGB",
+    b"P4": "1",
+    b"P5": "L",
+    b"P6": "RGB",
+    # extensions
+    b"P0CMYK": "CMYK",
+    # PIL extensions (for test purposes only)
+    b"PyP": "P",
+    b"PyRGBA": "RGBA",
+    b"PyCMYK": "CMYK",
+}
+
+
+def _accept(prefix):
+    return prefix[0:1] == b"P" and prefix[1] in b"0123456y"
+
+
+##
+# Image plugin for PBM, PGM, and PPM images.
+
+
+class PpmImageFile(ImageFile.ImageFile):
+    format = "PPM"
+    format_description = "Pbmplus image"
+
+    def _read_magic(self):
+        magic = b""
+        # read until whitespace or longest available magic number
+        for _ in range(6):
+            c = self.fp.read(1)
+            if not c or c in b_whitespace:
+                break
+            magic += c
+        return magic
+
+    def _read_token(self):
+        token = b""
+        while len(token) <= 10:  # read until next whitespace or limit of 10 characters
+            c = self.fp.read(1)
+            if not c:
+                break
+            elif c in b_whitespace:  # token ended
+                if not token:
+                    # skip whitespace at start
+                    continue
+                break
+            elif c == b"#":
+                # ignores rest of the line; stops at CR, LF or EOF
+                while self.fp.read(1) not in b"\r\n":
+                    pass
+                continue
+            token += c
+        if not token:
+            # Token was not even 1 byte
+            msg = "Reached EOF while reading header"
+            raise ValueError(msg)
+        elif len(token) > 10:
+            msg = f"Token too long in file header: {token.decode()}"
+            raise ValueError(msg)
+        return token
+
+    def _open(self):
+        magic_number = self._read_magic()
+        try:
+            mode = MODES[magic_number]
+        except KeyError:
+            msg = "not a PPM file"
+            raise SyntaxError(msg)
+
+        if magic_number in (b"P1", b"P4"):
+            self.custom_mimetype = "image/x-portable-bitmap"
+        elif magic_number in (b"P2", b"P5"):
+            self.custom_mimetype = "image/x-portable-graymap"
+        elif magic_number in (b"P3", b"P6"):
+            self.custom_mimetype = "image/x-portable-pixmap"
+
+        maxval = None
+        decoder_name = "raw"
+        if magic_number in (b"P1", b"P2", b"P3"):
+            decoder_name = "ppm_plain"
+        for ix in range(3):
+            token = int(self._read_token())
+            if ix == 0:  # token is the x size
+                xsize = token
+            elif ix == 1:  # token is the y size
+                ysize = token
+                if mode == "1":
+                    self.mode = "1"
+                    rawmode = "1;I"
+                    break
+                else:
+                    self.mode = rawmode = mode
+            elif ix == 2:  # token is maxval
+                maxval = token
+                if not 0 < maxval < 65536:
+                    msg = "maxval must be greater than 0 and less than 65536"
+                    raise ValueError(msg)
+                if maxval > 255 and mode == "L":
+                    self.mode = "I"
+
+                if decoder_name != "ppm_plain":
+                    # If maxval matches a bit depth, use the raw decoder directly
+                    if maxval == 65535 and mode == "L":
+                        rawmode = "I;16B"
+                    elif maxval != 255:
+                        decoder_name = "ppm"
+
+        args = (rawmode, 0, 1) if decoder_name == "raw" else (rawmode, maxval)
+        self._size = xsize, ysize
+        self.tile = [(decoder_name, (0, 0, xsize, ysize), self.fp.tell(), args)]
+
+
+#
+# --------------------------------------------------------------------
+
+
+class PpmPlainDecoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def _read_block(self):
+        return self.fd.read(ImageFile.SAFEBLOCK)
+
+    def _find_comment_end(self, block, start=0):
+        a = block.find(b"\n", start)
+        b = block.find(b"\r", start)
+        return min(a, b) if a * b > 0 else max(a, b)  # lowest nonnegative index (or -1)
+
+    def _ignore_comments(self, block):
+        if self._comment_spans:
+            # Finish current comment
+            while block:
+                comment_end = self._find_comment_end(block)
+                if comment_end != -1:
+                    # Comment ends in this block
+                    # Delete tail of comment
+                    block = block[comment_end + 1 :]
+                    break
+                else:
+                    # Comment spans whole block
+                    # So read the next block, looking for the end
+                    block = self._read_block()
+
+        # Search for any further comments
+        self._comment_spans = False
+        while True:
+            comment_start = block.find(b"#")
+            if comment_start == -1:
+                # No comment found
+                break
+            comment_end = self._find_comment_end(block, comment_start)
+            if comment_end != -1:
+                # Comment ends in this block
+                # Delete comment
+                block = block[:comment_start] + block[comment_end + 1 :]
+            else:
+                # Comment continues to next block(s)
+                block = block[:comment_start]
+                self._comment_spans = True
+                break
+        return block
+
+    def _decode_bitonal(self):
+        """
+        This is a separate method because in the plain PBM format, all data tokens are
+        exactly one byte, so the inter-token whitespace is optional.
+        """
+        data = bytearray()
+        total_bytes = self.state.xsize * self.state.ysize
+
+        while len(data) != total_bytes:
+            block = self._read_block()  # read next block
+            if not block:
+                # eof
+                break
+
+            block = self._ignore_comments(block)
+
+            tokens = b"".join(block.split())
+            for token in tokens:
+                if token not in (48, 49):
+                    msg = b"Invalid token for this mode: %s" % bytes([token])
+                    raise ValueError(msg)
+            data = (data + tokens)[:total_bytes]
+        invert = bytes.maketrans(b"01", b"\xFF\x00")
+        return data.translate(invert)
+
+    def _decode_blocks(self, maxval):
+        data = bytearray()
+        max_len = 10
+        out_byte_count = 4 if self.mode == "I" else 1
+        out_max = 65535 if self.mode == "I" else 255
+        bands = Image.getmodebands(self.mode)
+        total_bytes = self.state.xsize * self.state.ysize * bands * out_byte_count
+
+        half_token = False
+        while len(data) != total_bytes:
+            block = self._read_block()  # read next block
+            if not block:
+                if half_token:
+                    block = bytearray(b" ")  # flush half_token
+                else:
+                    # eof
+                    break
+
+            block = self._ignore_comments(block)
+
+            if half_token:
+                block = half_token + block  # stitch half_token to new block
+                half_token = False
+
+            tokens = block.split()
+
+            if block and not block[-1:].isspace():  # block might split token
+                half_token = tokens.pop()  # save half token for later
+                if len(half_token) > max_len:  # prevent buildup of half_token
+                    msg = (
+                        b"Token too long found in data: %s" % half_token[: max_len + 1]
+                    )
+                    raise ValueError(msg)
+
+            for token in tokens:
+                if len(token) > max_len:
+                    msg = b"Token too long found in data: %s" % token[: max_len + 1]
+                    raise ValueError(msg)
+                value = int(token)
+                if value > maxval:
+                    msg = f"Channel value too large for this mode: {value}"
+                    raise ValueError(msg)
+                value = round(value / maxval * out_max)
+                data += o32(value) if self.mode == "I" else o8(value)
+                if len(data) == total_bytes:  # finished!
+                    break
+        return data
+
+    def decode(self, buffer):
+        self._comment_spans = False
+        if self.mode == "1":
+            data = self._decode_bitonal()
+            rawmode = "1;8"
+        else:
+            maxval = self.args[-1]
+            data = self._decode_blocks(maxval)
+            rawmode = "I;32" if self.mode == "I" else self.mode
+        self.set_as_raw(bytes(data), rawmode)
+        return -1, 0
+
+
+class PpmDecoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def decode(self, buffer):
+        data = bytearray()
+        maxval = self.args[-1]
+        in_byte_count = 1 if maxval < 256 else 2
+        out_byte_count = 4 if self.mode == "I" else 1
+        out_max = 65535 if self.mode == "I" else 255
+        bands = Image.getmodebands(self.mode)
+        while len(data) < self.state.xsize * self.state.ysize * bands * out_byte_count:
+            pixels = self.fd.read(in_byte_count * bands)
+            if len(pixels) < in_byte_count * bands:
+                # eof
+                break
+            for b in range(bands):
+                value = (
+                    pixels[b] if in_byte_count == 1 else i16(pixels, b * in_byte_count)
+                )
+                value = min(out_max, round(value / maxval * out_max))
+                data += o32(value) if self.mode == "I" else o8(value)
+        rawmode = "I;32" if self.mode == "I" else self.mode
+        self.set_as_raw(bytes(data), rawmode)
+        return -1, 0
+
+
+#
+# --------------------------------------------------------------------
+
+
+def _save(im, fp, filename):
+    if im.mode == "1":
+        rawmode, head = "1;I", b"P4"
+    elif im.mode == "L":
+        rawmode, head = "L", b"P5"
+    elif im.mode == "I":
+        rawmode, head = "I;16B", b"P5"
+    elif im.mode in ("RGB", "RGBA"):
+        rawmode, head = "RGB", b"P6"
+    else:
+        msg = f"cannot write mode {im.mode} as PPM"
+        raise OSError(msg)
+    fp.write(head + b"\n%d %d\n" % im.size)
+    if head == b"P6":
+        fp.write(b"255\n")
+    elif head == b"P5":
+        if rawmode == "L":
+            fp.write(b"255\n")
+        else:
+            fp.write(b"65535\n")
+    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))])
+
+    # ALTERNATIVE: save via builtin debug function
+    # im._dump(filename)
+
+
+#
+# --------------------------------------------------------------------
+
+
+Image.register_open(PpmImageFile.format, PpmImageFile, _accept)
+Image.register_save(PpmImageFile.format, _save)
+
+Image.register_decoder("ppm", PpmDecoder)
+Image.register_decoder("ppm_plain", PpmPlainDecoder)
+
+Image.register_extensions(PpmImageFile.format, [".pbm", ".pgm", ".ppm", ".pnm"])
+
+Image.register_mime(PpmImageFile.format, "image/x-portable-anymap")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PsdImagePlugin.py

@@ -0,0 +1,303 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# Adobe PSD 2.5/3.0 file handling
+#
+# History:
+# 1995-09-01 fl   Created
+# 1997-01-03 fl   Read most PSD images
+# 1997-01-18 fl   Fixed P and CMYK support
+# 2001-10-21 fl   Added seek/tell support (for layers)
+#
+# Copyright (c) 1997-2001 by Secret Labs AB.
+# Copyright (c) 1995-2001 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import io
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import i8
+from ._binary import i16be as i16
+from ._binary import i32be as i32
+from ._binary import si16be as si16
+
+MODES = {
+    # (photoshop mode, bits) -> (pil mode, required channels)
+    (0, 1): ("1", 1),
+    (0, 8): ("L", 1),
+    (1, 8): ("L", 1),
+    (2, 8): ("P", 1),
+    (3, 8): ("RGB", 3),
+    (4, 8): ("CMYK", 4),
+    (7, 8): ("L", 1),  # FIXME: multilayer
+    (8, 8): ("L", 1),  # duotone
+    (9, 8): ("LAB", 3),
+}
+
+
+# --------------------------------------------------------------------.
+# read PSD images
+
+
+def _accept(prefix):
+    return prefix[:4] == b"8BPS"
+
+
+##
+# Image plugin for Photoshop images.
+
+
+class PsdImageFile(ImageFile.ImageFile):
+    format = "PSD"
+    format_description = "Adobe Photoshop"
+    _close_exclusive_fp_after_loading = False
+
+    def _open(self):
+        read = self.fp.read
+
+        #
+        # header
+
+        s = read(26)
+        if not _accept(s) or i16(s, 4) != 1:
+            msg = "not a PSD file"
+            raise SyntaxError(msg)
+
+        psd_bits = i16(s, 22)
+        psd_channels = i16(s, 12)
+        psd_mode = i16(s, 24)
+
+        mode, channels = MODES[(psd_mode, psd_bits)]
+
+        if channels > psd_channels:
+            msg = "not enough channels"
+            raise OSError(msg)
+        if mode == "RGB" and psd_channels == 4:
+            mode = "RGBA"
+            channels = 4
+
+        self.mode = mode
+        self._size = i32(s, 18), i32(s, 14)
+
+        #
+        # color mode data
+
+        size = i32(read(4))
+        if size:
+            data = read(size)
+            if mode == "P" and size == 768:
+                self.palette = ImagePalette.raw("RGB;L", data)
+
+        #
+        # image resources
+
+        self.resources = []
+
+        size = i32(read(4))
+        if size:
+            # load resources
+            end = self.fp.tell() + size
+            while self.fp.tell() < end:
+                read(4)  # signature
+                id = i16(read(2))
+                name = read(i8(read(1)))
+                if not (len(name) & 1):
+                    read(1)  # padding
+                data = read(i32(read(4)))
+                if len(data) & 1:
+                    read(1)  # padding
+                self.resources.append((id, name, data))
+                if id == 1039:  # ICC profile
+                    self.info["icc_profile"] = data
+
+        #
+        # layer and mask information
+
+        self.layers = []
+
+        size = i32(read(4))
+        if size:
+            end = self.fp.tell() + size
+            size = i32(read(4))
+            if size:
+                _layer_data = io.BytesIO(ImageFile._safe_read(self.fp, size))
+                self.layers = _layerinfo(_layer_data, size)
+            self.fp.seek(end)
+        self.n_frames = len(self.layers)
+        self.is_animated = self.n_frames > 1
+
+        #
+        # image descriptor
+
+        self.tile = _maketile(self.fp, mode, (0, 0) + self.size, channels)
+
+        # keep the file open
+        self._fp = self.fp
+        self.frame = 1
+        self._min_frame = 1
+
+    def seek(self, layer):
+        if not self._seek_check(layer):
+            return
+
+        # seek to given layer (1..max)
+        try:
+            name, mode, bbox, tile = self.layers[layer - 1]
+            self.mode = mode
+            self.tile = tile
+            self.frame = layer
+            self.fp = self._fp
+            return name, bbox
+        except IndexError as e:
+            msg = "no such layer"
+            raise EOFError(msg) from e
+
+    def tell(self):
+        # return layer number (0=image, 1..max=layers)
+        return self.frame
+
+
+def _layerinfo(fp, ct_bytes):
+    # read layerinfo block
+    layers = []
+
+    def read(size):
+        return ImageFile._safe_read(fp, size)
+
+    ct = si16(read(2))
+
+    # sanity check
+    if ct_bytes < (abs(ct) * 20):
+        msg = "Layer block too short for number of layers requested"
+        raise SyntaxError(msg)
+
+    for _ in range(abs(ct)):
+        # bounding box
+        y0 = i32(read(4))
+        x0 = i32(read(4))
+        y1 = i32(read(4))
+        x1 = i32(read(4))
+
+        # image info
+        mode = []
+        ct_types = i16(read(2))
+        types = list(range(ct_types))
+        if len(types) > 4:
+            continue
+
+        for _ in types:
+            type = i16(read(2))
+
+            if type == 65535:
+                m = "A"
+            else:
+                m = "RGBA"[type]
+
+            mode.append(m)
+            read(4)  # size
+
+        # figure out the image mode
+        mode.sort()
+        if mode == ["R"]:
+            mode = "L"
+        elif mode == ["B", "G", "R"]:
+            mode = "RGB"
+        elif mode == ["A", "B", "G", "R"]:
+            mode = "RGBA"
+        else:
+            mode = None  # unknown
+
+        # skip over blend flags and extra information
+        read(12)  # filler
+        name = ""
+        size = i32(read(4))  # length of the extra data field
+        if size:
+            data_end = fp.tell() + size
+
+            length = i32(read(4))
+            if length:
+                fp.seek(length - 16, io.SEEK_CUR)
+
+            length = i32(read(4))
+            if length:
+                fp.seek(length, io.SEEK_CUR)
+
+            length = i8(read(1))
+            if length:
+                # Don't know the proper encoding,
+                # Latin-1 should be a good guess
+                name = read(length).decode("latin-1", "replace")
+
+            fp.seek(data_end)
+        layers.append((name, mode, (x0, y0, x1, y1)))
+
+    # get tiles
+    for i, (name, mode, bbox) in enumerate(layers):
+        tile = []
+        for m in mode:
+            t = _maketile(fp, m, bbox, 1)
+            if t:
+                tile.extend(t)
+        layers[i] = name, mode, bbox, tile
+
+    return layers
+
+
+def _maketile(file, mode, bbox, channels):
+    tile = None
+    read = file.read
+
+    compression = i16(read(2))
+
+    xsize = bbox[2] - bbox[0]
+    ysize = bbox[3] - bbox[1]
+
+    offset = file.tell()
+
+    if compression == 0:
+        #
+        # raw compression
+        tile = []
+        for channel in range(channels):
+            layer = mode[channel]
+            if mode == "CMYK":
+                layer += ";I"
+            tile.append(("raw", bbox, offset, layer))
+            offset = offset + xsize * ysize
+
+    elif compression == 1:
+        #
+        # packbits compression
+        i = 0
+        tile = []
+        bytecount = read(channels * ysize * 2)
+        offset = file.tell()
+        for channel in range(channels):
+            layer = mode[channel]
+            if mode == "CMYK":
+                layer += ";I"
+            tile.append(("packbits", bbox, offset, layer))
+            for y in range(ysize):
+                offset = offset + i16(bytecount, i)
+                i += 2
+
+    file.seek(offset)
+
+    if offset & 1:
+        read(1)  # padding
+
+    return tile
+
+
+# --------------------------------------------------------------------
+# registry
+
+
+Image.register_open(PsdImageFile.format, PsdImageFile, _accept)
+
+Image.register_extension(PsdImageFile.format, ".psd")
+
+Image.register_mime(PsdImageFile.format, "image/vnd.adobe.photoshop")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/PyAccess.py

@@ -0,0 +1,363 @@
+#
+# The Python Imaging Library
+# Pillow fork
+#
+# Python implementation of the PixelAccess Object
+#
+# Copyright (c) 1997-2009 by Secret Labs AB.  All rights reserved.
+# Copyright (c) 1995-2009 by Fredrik Lundh.
+# Copyright (c) 2013 Eric Soroos
+#
+# See the README file for information on usage and redistribution
+#
+
+# Notes:
+#
+#  * Implements the pixel access object following Access.c
+#  * Taking only the tuple form, which is used from python.
+#    * Fill.c uses the integer form, but it's still going to use the old
+#      Access.c implementation.
+#
+
+import logging
+import sys
+
+from ._deprecate import deprecate
+
+try:
+    from cffi import FFI
+
+    defs = """
+    struct Pixel_RGBA {
+        unsigned char r,g,b,a;
+    };
+    struct Pixel_I16 {
+        unsigned char l,r;
+    };
+    """
+    ffi = FFI()
+    ffi.cdef(defs)
+except ImportError as ex:
+    # Allow error import for doc purposes, but error out when accessing
+    # anything in core.
+    from ._util import DeferredError
+
+    FFI = ffi = DeferredError(ex)
+
+logger = logging.getLogger(__name__)
+
+
+class PyAccess:
+    def __init__(self, img, readonly=False):
+        deprecate("PyAccess", 11)
+        vals = dict(img.im.unsafe_ptrs)
+        self.readonly = readonly
+        self.image8 = ffi.cast("unsigned char **", vals["image8"])
+        self.image32 = ffi.cast("int **", vals["image32"])
+        self.image = ffi.cast("unsigned char **", vals["image"])
+        self.xsize, self.ysize = img.im.size
+        self._img = img
+
+        # Keep pointer to im object to prevent dereferencing.
+        self._im = img.im
+        if self._im.mode in ("P", "PA"):
+            self._palette = img.palette
+
+        # Debugging is polluting test traces, only useful here
+        # when hacking on PyAccess
+        # logger.debug("%s", vals)
+        self._post_init()
+
+    def _post_init(self):
+        pass
+
+    def __setitem__(self, xy, color):
+        """
+        Modifies the pixel at x,y. The color is given as a single
+        numerical value for single band images, and a tuple for
+        multi-band images
+
+        :param xy: The pixel coordinate, given as (x, y). See
+           :ref:`coordinate-system`.
+        :param color: The pixel value.
+        """
+        if self.readonly:
+            msg = "Attempt to putpixel a read only image"
+            raise ValueError(msg)
+        (x, y) = xy
+        if x < 0:
+            x = self.xsize + x
+        if y < 0:
+            y = self.ysize + y
+        (x, y) = self.check_xy((x, y))
+
+        if (
+            self._im.mode in ("P", "PA")
+            and isinstance(color, (list, tuple))
+            and len(color) in [3, 4]
+        ):
+            # RGB or RGBA value for a P or PA image
+            if self._im.mode == "PA":
+                alpha = color[3] if len(color) == 4 else 255
+                color = color[:3]
+            color = self._palette.getcolor(color, self._img)
+            if self._im.mode == "PA":
+                color = (color, alpha)
+
+        return self.set_pixel(x, y, color)
+
+    def __getitem__(self, xy):
+        """
+        Returns the pixel at x,y. The pixel is returned as a single
+        value for single band images or a tuple for multiple band
+        images
+
+        :param xy: The pixel coordinate, given as (x, y). See
+          :ref:`coordinate-system`.
+        :returns: a pixel value for single band images, a tuple of
+          pixel values for multiband images.
+        """
+        (x, y) = xy
+        if x < 0:
+            x = self.xsize + x
+        if y < 0:
+            y = self.ysize + y
+        (x, y) = self.check_xy((x, y))
+        return self.get_pixel(x, y)
+
+    putpixel = __setitem__
+    getpixel = __getitem__
+
+    def check_xy(self, xy):
+        (x, y) = xy
+        if not (0 <= x < self.xsize and 0 <= y < self.ysize):
+            msg = "pixel location out of range"
+            raise ValueError(msg)
+        return xy
+
+
+class _PyAccess32_2(PyAccess):
+    """PA, LA, stored in first and last bytes of a 32 bit word"""
+
+    def _post_init(self, *args, **kwargs):
+        self.pixels = ffi.cast("struct Pixel_RGBA **", self.image32)
+
+    def get_pixel(self, x, y):
+        pixel = self.pixels[y][x]
+        return pixel.r, pixel.a
+
+    def set_pixel(self, x, y, color):
+        pixel = self.pixels[y][x]
+        # tuple
+        pixel.r = min(color[0], 255)
+        pixel.a = min(color[1], 255)
+
+
+class _PyAccess32_3(PyAccess):
+    """RGB and friends, stored in the first three bytes of a 32 bit word"""
+
+    def _post_init(self, *args, **kwargs):
+        self.pixels = ffi.cast("struct Pixel_RGBA **", self.image32)
+
+    def get_pixel(self, x, y):
+        pixel = self.pixels[y][x]
+        return pixel.r, pixel.g, pixel.b
+
+    def set_pixel(self, x, y, color):
+        pixel = self.pixels[y][x]
+        # tuple
+        pixel.r = min(color[0], 255)
+        pixel.g = min(color[1], 255)
+        pixel.b = min(color[2], 255)
+        pixel.a = 255
+
+
+class _PyAccess32_4(PyAccess):
+    """RGBA etc, all 4 bytes of a 32 bit word"""
+
+    def _post_init(self, *args, **kwargs):
+        self.pixels = ffi.cast("struct Pixel_RGBA **", self.image32)
+
+    def get_pixel(self, x, y):
+        pixel = self.pixels[y][x]
+        return pixel.r, pixel.g, pixel.b, pixel.a
+
+    def set_pixel(self, x, y, color):
+        pixel = self.pixels[y][x]
+        # tuple
+        pixel.r = min(color[0], 255)
+        pixel.g = min(color[1], 255)
+        pixel.b = min(color[2], 255)
+        pixel.a = min(color[3], 255)
+
+
+class _PyAccess8(PyAccess):
+    """1, L, P, 8 bit images stored as uint8"""
+
+    def _post_init(self, *args, **kwargs):
+        self.pixels = self.image8
+
+    def get_pixel(self, x, y):
+        return self.pixels[y][x]
+
+    def set_pixel(self, x, y, color):
+        try:
+            # integer
+            self.pixels[y][x] = min(color, 255)
+        except TypeError:
+            # tuple
+            self.pixels[y][x] = min(color[0], 255)
+
+
+class _PyAccessI16_N(PyAccess):
+    """I;16 access, native bitendian without conversion"""
+
+    def _post_init(self, *args, **kwargs):
+        self.pixels = ffi.cast("unsigned short **", self.image)
+
+    def get_pixel(self, x, y):
+        return self.pixels[y][x]
+
+    def set_pixel(self, x, y, color):
+        try:
+            # integer
+            self.pixels[y][x] = min(color, 65535)
+        except TypeError:
+            # tuple
+            self.pixels[y][x] = min(color[0], 65535)
+
+
+class _PyAccessI16_L(PyAccess):
+    """I;16L access, with conversion"""
+
+    def _post_init(self, *args, **kwargs):
+        self.pixels = ffi.cast("struct Pixel_I16 **", self.image)
+
+    def get_pixel(self, x, y):
+        pixel = self.pixels[y][x]
+        return pixel.l + pixel.r * 256
+
+    def set_pixel(self, x, y, color):
+        pixel = self.pixels[y][x]
+        try:
+            color = min(color, 65535)
+        except TypeError:
+            color = min(color[0], 65535)
+
+        pixel.l = color & 0xFF  # noqa: E741
+        pixel.r = color >> 8
+
+
+class _PyAccessI16_B(PyAccess):
+    """I;16B access, with conversion"""
+
+    def _post_init(self, *args, **kwargs):
+        self.pixels = ffi.cast("struct Pixel_I16 **", self.image)
+
+    def get_pixel(self, x, y):
+        pixel = self.pixels[y][x]
+        return pixel.l * 256 + pixel.r
+
+    def set_pixel(self, x, y, color):
+        pixel = self.pixels[y][x]
+        try:
+            color = min(color, 65535)
+        except Exception:
+            color = min(color[0], 65535)
+
+        pixel.l = color >> 8  # noqa: E741
+        pixel.r = color & 0xFF
+
+
+class _PyAccessI32_N(PyAccess):
+    """Signed Int32 access, native endian"""
+
+    def _post_init(self, *args, **kwargs):
+        self.pixels = self.image32
+
+    def get_pixel(self, x, y):
+        return self.pixels[y][x]
+
+    def set_pixel(self, x, y, color):
+        self.pixels[y][x] = color
+
+
+class _PyAccessI32_Swap(PyAccess):
+    """I;32L/B access, with byteswapping conversion"""
+
+    def _post_init(self, *args, **kwargs):
+        self.pixels = self.image32
+
+    def reverse(self, i):
+        orig = ffi.new("int *", i)
+        chars = ffi.cast("unsigned char *", orig)
+        chars[0], chars[1], chars[2], chars[3] = chars[3], chars[2], chars[1], chars[0]
+        return ffi.cast("int *", chars)[0]
+
+    def get_pixel(self, x, y):
+        return self.reverse(self.pixels[y][x])
+
+    def set_pixel(self, x, y, color):
+        self.pixels[y][x] = self.reverse(color)
+
+
+class _PyAccessF(PyAccess):
+    """32 bit float access"""
+
+    def _post_init(self, *args, **kwargs):
+        self.pixels = ffi.cast("float **", self.image32)
+
+    def get_pixel(self, x, y):
+        return self.pixels[y][x]
+
+    def set_pixel(self, x, y, color):
+        try:
+            # not a tuple
+            self.pixels[y][x] = color
+        except TypeError:
+            # tuple
+            self.pixels[y][x] = color[0]
+
+
+mode_map = {
+    "1": _PyAccess8,
+    "L": _PyAccess8,
+    "P": _PyAccess8,
+    "I;16N": _PyAccessI16_N,
+    "LA": _PyAccess32_2,
+    "La": _PyAccess32_2,
+    "PA": _PyAccess32_2,
+    "RGB": _PyAccess32_3,
+    "LAB": _PyAccess32_3,
+    "HSV": _PyAccess32_3,
+    "YCbCr": _PyAccess32_3,
+    "RGBA": _PyAccess32_4,
+    "RGBa": _PyAccess32_4,
+    "RGBX": _PyAccess32_4,
+    "CMYK": _PyAccess32_4,
+    "F": _PyAccessF,
+    "I": _PyAccessI32_N,
+}
+
+if sys.byteorder == "little":
+    mode_map["I;16"] = _PyAccessI16_N
+    mode_map["I;16L"] = _PyAccessI16_N
+    mode_map["I;16B"] = _PyAccessI16_B
+
+    mode_map["I;32L"] = _PyAccessI32_N
+    mode_map["I;32B"] = _PyAccessI32_Swap
+else:
+    mode_map["I;16"] = _PyAccessI16_L
+    mode_map["I;16L"] = _PyAccessI16_L
+    mode_map["I;16B"] = _PyAccessI16_N
+
+    mode_map["I;32L"] = _PyAccessI32_Swap
+    mode_map["I;32B"] = _PyAccessI32_N
+
+
+def new(img, readonly=False):
+    access_type = mode_map.get(img.mode, None)
+    if not access_type:
+        logger.debug("PyAccess Not Implemented: %s", img.mode)
+        return None
+    return access_type(img, readonly)

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/QoiImagePlugin.py

@@ -0,0 +1,105 @@
+#
+# The Python Imaging Library.
+#
+# QOI support for PIL
+#
+# See the README file for information on usage and redistribution.
+#
+
+import os
+
+from . import Image, ImageFile
+from ._binary import i32be as i32
+from ._binary import o8
+
+
+def _accept(prefix):
+    return prefix[:4] == b"qoif"
+
+
+class QoiImageFile(ImageFile.ImageFile):
+    format = "QOI"
+    format_description = "Quite OK Image"
+
+    def _open(self):
+        if not _accept(self.fp.read(4)):
+            msg = "not a QOI file"
+            raise SyntaxError(msg)
+
+        self._size = tuple(i32(self.fp.read(4)) for i in range(2))
+
+        channels = self.fp.read(1)[0]
+        self.mode = "RGB" if channels == 3 else "RGBA"
+
+        self.fp.seek(1, os.SEEK_CUR)  # colorspace
+        self.tile = [("qoi", (0, 0) + self._size, self.fp.tell(), None)]
+
+
+class QoiDecoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def _add_to_previous_pixels(self, value):
+        self._previous_pixel = value
+
+        r, g, b, a = value
+        hash_value = (r * 3 + g * 5 + b * 7 + a * 11) % 64
+        self._previously_seen_pixels[hash_value] = value
+
+    def decode(self, buffer):
+        self._previously_seen_pixels = {}
+        self._previous_pixel = None
+        self._add_to_previous_pixels(b"".join(o8(i) for i in (0, 0, 0, 255)))
+
+        data = bytearray()
+        bands = Image.getmodebands(self.mode)
+        while len(data) < self.state.xsize * self.state.ysize * bands:
+            byte = self.fd.read(1)[0]
+            if byte == 0b11111110:  # QOI_OP_RGB
+                value = self.fd.read(3) + o8(255)
+            elif byte == 0b11111111:  # QOI_OP_RGBA
+                value = self.fd.read(4)
+            else:
+                op = byte >> 6
+                if op == 0:  # QOI_OP_INDEX
+                    op_index = byte & 0b00111111
+                    value = self._previously_seen_pixels.get(op_index, (0, 0, 0, 0))
+                elif op == 1:  # QOI_OP_DIFF
+                    value = (
+                        (self._previous_pixel[0] + ((byte & 0b00110000) >> 4) - 2)
+                        % 256,
+                        (self._previous_pixel[1] + ((byte & 0b00001100) >> 2) - 2)
+                        % 256,
+                        (self._previous_pixel[2] + (byte & 0b00000011) - 2) % 256,
+                    )
+                    value += (self._previous_pixel[3],)
+                elif op == 2:  # QOI_OP_LUMA
+                    second_byte = self.fd.read(1)[0]
+                    diff_green = (byte & 0b00111111) - 32
+                    diff_red = ((second_byte & 0b11110000) >> 4) - 8
+                    diff_blue = (second_byte & 0b00001111) - 8
+
+                    value = tuple(
+                        (self._previous_pixel[i] + diff_green + diff) % 256
+                        for i, diff in enumerate((diff_red, 0, diff_blue))
+                    )
+                    value += (self._previous_pixel[3],)
+                elif op == 3:  # QOI_OP_RUN
+                    run_length = (byte & 0b00111111) + 1
+                    value = self._previous_pixel
+                    if bands == 3:
+                        value = value[:3]
+                    data += value * run_length
+                    continue
+                value = b"".join(o8(i) for i in value)
+            self._add_to_previous_pixels(value)
+
+            if bands == 3:
+                value = value[:3]
+            data += value
+        self.set_as_raw(bytes(data))
+        return -1, 0
+
+
+Image.register_open(QoiImageFile.format, QoiImageFile, _accept)
+Image.register_decoder("qoi", QoiDecoder)
+Image.register_extension(QoiImageFile.format, ".qoi")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/SgiImagePlugin.py

@@ -0,0 +1,231 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# SGI image file handling
+#
+# See "The SGI Image File Format (Draft version 0.97)", Paul Haeberli.
+# <ftp://ftp.sgi.com/graphics/SGIIMAGESPEC>
+#
+#
+# History:
+# 2017-22-07 mb   Add RLE decompression
+# 2016-16-10 mb   Add save method without compression
+# 1995-09-10 fl   Created
+#
+# Copyright (c) 2016 by Mickael Bonfill.
+# Copyright (c) 2008 by Karsten Hiddemann.
+# Copyright (c) 1997 by Secret Labs AB.
+# Copyright (c) 1995 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+import os
+import struct
+
+from . import Image, ImageFile
+from ._binary import i16be as i16
+from ._binary import o8
+
+
+def _accept(prefix):
+    return len(prefix) >= 2 and i16(prefix) == 474
+
+
+MODES = {
+    (1, 1, 1): "L",
+    (1, 2, 1): "L",
+    (2, 1, 1): "L;16B",
+    (2, 2, 1): "L;16B",
+    (1, 3, 3): "RGB",
+    (2, 3, 3): "RGB;16B",
+    (1, 3, 4): "RGBA",
+    (2, 3, 4): "RGBA;16B",
+}
+
+
+##
+# Image plugin for SGI images.
+class SgiImageFile(ImageFile.ImageFile):
+    format = "SGI"
+    format_description = "SGI Image File Format"
+
+    def _open(self):
+        # HEAD
+        headlen = 512
+        s = self.fp.read(headlen)
+
+        if not _accept(s):
+            msg = "Not an SGI image file"
+            raise ValueError(msg)
+
+        # compression : verbatim or RLE
+        compression = s[2]
+
+        # bpc : 1 or 2 bytes (8bits or 16bits)
+        bpc = s[3]
+
+        # dimension : 1, 2 or 3 (depending on xsize, ysize and zsize)
+        dimension = i16(s, 4)
+
+        # xsize : width
+        xsize = i16(s, 6)
+
+        # ysize : height
+        ysize = i16(s, 8)
+
+        # zsize : channels count
+        zsize = i16(s, 10)
+
+        # layout
+        layout = bpc, dimension, zsize
+
+        # determine mode from bits/zsize
+        rawmode = ""
+        try:
+            rawmode = MODES[layout]
+        except KeyError:
+            pass
+
+        if rawmode == "":
+            msg = "Unsupported SGI image mode"
+            raise ValueError(msg)
+
+        self._size = xsize, ysize
+        self.mode = rawmode.split(";")[0]
+        if self.mode == "RGB":
+            self.custom_mimetype = "image/rgb"
+
+        # orientation -1 : scanlines begins at the bottom-left corner
+        orientation = -1
+
+        # decoder info
+        if compression == 0:
+            pagesize = xsize * ysize * bpc
+            if bpc == 2:
+                self.tile = [
+                    ("SGI16", (0, 0) + self.size, headlen, (self.mode, 0, orientation))
+                ]
+            else:
+                self.tile = []
+                offset = headlen
+                for layer in self.mode:
+                    self.tile.append(
+                        ("raw", (0, 0) + self.size, offset, (layer, 0, orientation))
+                    )
+                    offset += pagesize
+        elif compression == 1:
+            self.tile = [
+                ("sgi_rle", (0, 0) + self.size, headlen, (rawmode, orientation, bpc))
+            ]
+
+
+def _save(im, fp, filename):
+    if im.mode != "RGB" and im.mode != "RGBA" and im.mode != "L":
+        msg = "Unsupported SGI image mode"
+        raise ValueError(msg)
+
+    # Get the keyword arguments
+    info = im.encoderinfo
+
+    # Byte-per-pixel precision, 1 = 8bits per pixel
+    bpc = info.get("bpc", 1)
+
+    if bpc not in (1, 2):
+        msg = "Unsupported number of bytes per pixel"
+        raise ValueError(msg)
+
+    # Flip the image, since the origin of SGI file is the bottom-left corner
+    orientation = -1
+    # Define the file as SGI File Format
+    magic_number = 474
+    # Run-Length Encoding Compression - Unsupported at this time
+    rle = 0
+
+    # Number of dimensions (x,y,z)
+    dim = 3
+    # X Dimension = width / Y Dimension = height
+    x, y = im.size
+    if im.mode == "L" and y == 1:
+        dim = 1
+    elif im.mode == "L":
+        dim = 2
+    # Z Dimension: Number of channels
+    z = len(im.mode)
+
+    if dim == 1 or dim == 2:
+        z = 1
+
+    # assert we've got the right number of bands.
+    if len(im.getbands()) != z:
+        msg = f"incorrect number of bands in SGI write: {z} vs {len(im.getbands())}"
+        raise ValueError(msg)
+
+    # Minimum Byte value
+    pinmin = 0
+    # Maximum Byte value (255 = 8bits per pixel)
+    pinmax = 255
+    # Image name (79 characters max, truncated below in write)
+    img_name = os.path.splitext(os.path.basename(filename))[0]
+    img_name = img_name.encode("ascii", "ignore")
+    # Standard representation of pixel in the file
+    colormap = 0
+    fp.write(struct.pack(">h", magic_number))
+    fp.write(o8(rle))
+    fp.write(o8(bpc))
+    fp.write(struct.pack(">H", dim))
+    fp.write(struct.pack(">H", x))
+    fp.write(struct.pack(">H", y))
+    fp.write(struct.pack(">H", z))
+    fp.write(struct.pack(">l", pinmin))
+    fp.write(struct.pack(">l", pinmax))
+    fp.write(struct.pack("4s", b""))  # dummy
+    fp.write(struct.pack("79s", img_name))  # truncates to 79 chars
+    fp.write(struct.pack("s", b""))  # force null byte after img_name
+    fp.write(struct.pack(">l", colormap))
+    fp.write(struct.pack("404s", b""))  # dummy
+
+    rawmode = "L"
+    if bpc == 2:
+        rawmode = "L;16B"
+
+    for channel in im.split():
+        fp.write(channel.tobytes("raw", rawmode, 0, orientation))
+
+    if hasattr(fp, "flush"):
+        fp.flush()
+
+
+class SGI16Decoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def decode(self, buffer):
+        rawmode, stride, orientation = self.args
+        pagesize = self.state.xsize * self.state.ysize
+        zsize = len(self.mode)
+        self.fd.seek(512)
+
+        for band in range(zsize):
+            channel = Image.new("L", (self.state.xsize, self.state.ysize))
+            channel.frombytes(
+                self.fd.read(2 * pagesize), "raw", "L;16B", stride, orientation
+            )
+            self.im.putband(channel.im, band)
+
+        return -1, 0
+
+
+#
+# registry
+
+
+Image.register_decoder("SGI16", SGI16Decoder)
+Image.register_open(SgiImageFile.format, SgiImageFile, _accept)
+Image.register_save(SgiImageFile.format, _save)
+Image.register_mime(SgiImageFile.format, "image/sgi")
+
+Image.register_extensions(SgiImageFile.format, [".bw", ".rgb", ".rgba", ".sgi"])
+
+# End of file

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/SpiderImagePlugin.py

@@ -0,0 +1,318 @@
+#
+# The Python Imaging Library.
+#
+# SPIDER image file handling
+#
+# History:
+# 2004-08-02    Created BB
+# 2006-03-02    added save method
+# 2006-03-13    added support for stack images
+#
+# Copyright (c) 2004 by Health Research Inc. (HRI) RENSSELAER, NY 12144.
+# Copyright (c) 2004 by William Baxter.
+# Copyright (c) 2004 by Secret Labs AB.
+# Copyright (c) 2004 by Fredrik Lundh.
+#
+
+##
+# Image plugin for the Spider image format. This format is used
+# by the SPIDER software, in processing image data from electron
+# microscopy and tomography.
+##
+
+#
+# SpiderImagePlugin.py
+#
+# The Spider image format is used by SPIDER software, in processing
+# image data from electron microscopy and tomography.
+#
+# Spider home page:
+# https://spider.wadsworth.org/spider_doc/spider/docs/spider.html
+#
+# Details about the Spider image format:
+# https://spider.wadsworth.org/spider_doc/spider/docs/image_doc.html
+#
+import os
+import struct
+import sys
+
+from . import Image, ImageFile
+
+
+def isInt(f):
+    try:
+        i = int(f)
+        if f - i == 0:
+            return 1
+        else:
+            return 0
+    except (ValueError, OverflowError):
+        return 0
+
+
+iforms = [1, 3, -11, -12, -21, -22]
+
+
+# There is no magic number to identify Spider files, so just check a
+# series of header locations to see if they have reasonable values.
+# Returns no. of bytes in the header, if it is a valid Spider header,
+# otherwise returns 0
+
+
+def isSpiderHeader(t):
+    h = (99,) + t  # add 1 value so can use spider header index start=1
+    # header values 1,2,5,12,13,22,23 should be integers
+    for i in [1, 2, 5, 12, 13, 22, 23]:
+        if not isInt(h[i]):
+            return 0
+    # check iform
+    iform = int(h[5])
+    if iform not in iforms:
+        return 0
+    # check other header values
+    labrec = int(h[13])  # no. records in file header
+    labbyt = int(h[22])  # total no. of bytes in header
+    lenbyt = int(h[23])  # record length in bytes
+    if labbyt != (labrec * lenbyt):
+        return 0
+    # looks like a valid header
+    return labbyt
+
+
+def isSpiderImage(filename):
+    with open(filename, "rb") as fp:
+        f = fp.read(92)  # read 23 * 4 bytes
+    t = struct.unpack(">23f", f)  # try big-endian first
+    hdrlen = isSpiderHeader(t)
+    if hdrlen == 0:
+        t = struct.unpack("<23f", f)  # little-endian
+        hdrlen = isSpiderHeader(t)
+    return hdrlen
+
+
+class SpiderImageFile(ImageFile.ImageFile):
+    format = "SPIDER"
+    format_description = "Spider 2D image"
+    _close_exclusive_fp_after_loading = False
+
+    def _open(self):
+        # check header
+        n = 27 * 4  # read 27 float values
+        f = self.fp.read(n)
+
+        try:
+            self.bigendian = 1
+            t = struct.unpack(">27f", f)  # try big-endian first
+            hdrlen = isSpiderHeader(t)
+            if hdrlen == 0:
+                self.bigendian = 0
+                t = struct.unpack("<27f", f)  # little-endian
+                hdrlen = isSpiderHeader(t)
+            if hdrlen == 0:
+                msg = "not a valid Spider file"
+                raise SyntaxError(msg)
+        except struct.error as e:
+            msg = "not a valid Spider file"
+            raise SyntaxError(msg) from e
+
+        h = (99,) + t  # add 1 value : spider header index starts at 1
+        iform = int(h[5])
+        if iform != 1:
+            msg = "not a Spider 2D image"
+            raise SyntaxError(msg)
+
+        self._size = int(h[12]), int(h[2])  # size in pixels (width, height)
+        self.istack = int(h[24])
+        self.imgnumber = int(h[27])
+
+        if self.istack == 0 and self.imgnumber == 0:
+            # stk=0, img=0: a regular 2D image
+            offset = hdrlen
+            self._nimages = 1
+        elif self.istack > 0 and self.imgnumber == 0:
+            # stk>0, img=0: Opening the stack for the first time
+            self.imgbytes = int(h[12]) * int(h[2]) * 4
+            self.hdrlen = hdrlen
+            self._nimages = int(h[26])
+            # Point to the first image in the stack
+            offset = hdrlen * 2
+            self.imgnumber = 1
+        elif self.istack == 0 and self.imgnumber > 0:
+            # stk=0, img>0: an image within the stack
+            offset = hdrlen + self.stkoffset
+            self.istack = 2  # So Image knows it's still a stack
+        else:
+            msg = "inconsistent stack header values"
+            raise SyntaxError(msg)
+
+        if self.bigendian:
+            self.rawmode = "F;32BF"
+        else:
+            self.rawmode = "F;32F"
+        self.mode = "F"
+
+        self.tile = [("raw", (0, 0) + self.size, offset, (self.rawmode, 0, 1))]
+        self._fp = self.fp  # FIXME: hack
+
+    @property
+    def n_frames(self):
+        return self._nimages
+
+    @property
+    def is_animated(self):
+        return self._nimages > 1
+
+    # 1st image index is zero (although SPIDER imgnumber starts at 1)
+    def tell(self):
+        if self.imgnumber < 1:
+            return 0
+        else:
+            return self.imgnumber - 1
+
+    def seek(self, frame):
+        if self.istack == 0:
+            msg = "attempt to seek in a non-stack file"
+            raise EOFError(msg)
+        if not self._seek_check(frame):
+            return
+        self.stkoffset = self.hdrlen + frame * (self.hdrlen + self.imgbytes)
+        self.fp = self._fp
+        self.fp.seek(self.stkoffset)
+        self._open()
+
+    # returns a byte image after rescaling to 0..255
+    def convert2byte(self, depth=255):
+        (minimum, maximum) = self.getextrema()
+        m = 1
+        if maximum != minimum:
+            m = depth / (maximum - minimum)
+        b = -m * minimum
+        return self.point(lambda i, m=m, b=b: i * m + b).convert("L")
+
+    # returns a ImageTk.PhotoImage object, after rescaling to 0..255
+    def tkPhotoImage(self):
+        from . import ImageTk
+
+        return ImageTk.PhotoImage(self.convert2byte(), palette=256)
+
+
+# --------------------------------------------------------------------
+# Image series
+
+
+# given a list of filenames, return a list of images
+def loadImageSeries(filelist=None):
+    """create a list of :py:class:`~PIL.Image.Image` objects for use in a montage"""
+    if filelist is None or len(filelist) < 1:
+        return
+
+    imglist = []
+    for img in filelist:
+        if not os.path.exists(img):
+            print(f"unable to find {img}")
+            continue
+        try:
+            with Image.open(img) as im:
+                im = im.convert2byte()
+        except Exception:
+            if not isSpiderImage(img):
+                print(img + " is not a Spider image file")
+            continue
+        im.info["filename"] = img
+        imglist.append(im)
+    return imglist
+
+
+# --------------------------------------------------------------------
+# For saving images in Spider format
+
+
+def makeSpiderHeader(im):
+    nsam, nrow = im.size
+    lenbyt = nsam * 4  # There are labrec records in the header
+    labrec = int(1024 / lenbyt)
+    if 1024 % lenbyt != 0:
+        labrec += 1
+    labbyt = labrec * lenbyt
+    nvalues = int(labbyt / 4)
+    if nvalues < 23:
+        return []
+
+    hdr = []
+    for i in range(nvalues):
+        hdr.append(0.0)
+
+    # NB these are Fortran indices
+    hdr[1] = 1.0  # nslice (=1 for an image)
+    hdr[2] = float(nrow)  # number of rows per slice
+    hdr[3] = float(nrow)  # number of records in the image
+    hdr[5] = 1.0  # iform for 2D image
+    hdr[12] = float(nsam)  # number of pixels per line
+    hdr[13] = float(labrec)  # number of records in file header
+    hdr[22] = float(labbyt)  # total number of bytes in header
+    hdr[23] = float(lenbyt)  # record length in bytes
+
+    # adjust for Fortran indexing
+    hdr = hdr[1:]
+    hdr.append(0.0)
+    # pack binary data into a string
+    return [struct.pack("f", v) for v in hdr]
+
+
+def _save(im, fp, filename):
+    if im.mode[0] != "F":
+        im = im.convert("F")
+
+    hdr = makeSpiderHeader(im)
+    if len(hdr) < 256:
+        msg = "Error creating Spider header"
+        raise OSError(msg)
+
+    # write the SPIDER header
+    fp.writelines(hdr)
+
+    rawmode = "F;32NF"  # 32-bit native floating point
+    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))])
+
+
+def _save_spider(im, fp, filename):
+    # get the filename extension and register it with Image
+    ext = os.path.splitext(filename)[1]
+    Image.register_extension(SpiderImageFile.format, ext)
+    _save(im, fp, filename)
+
+
+# --------------------------------------------------------------------
+
+
+Image.register_open(SpiderImageFile.format, SpiderImageFile)
+Image.register_save(SpiderImageFile.format, _save_spider)
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print("Syntax: python3 SpiderImagePlugin.py [infile] [outfile]")
+        sys.exit()
+
+    filename = sys.argv[1]
+    if not isSpiderImage(filename):
+        print("input image must be in Spider format")
+        sys.exit()
+
+    with Image.open(filename) as im:
+        print("image: " + str(im))
+        print("format: " + str(im.format))
+        print("size: " + str(im.size))
+        print("mode: " + str(im.mode))
+        print("max, min: ", end=" ")
+        print(im.getextrema())
+
+        if len(sys.argv) > 2:
+            outfile = sys.argv[2]
+
+            # perform some image operation
+            im = im.transpose(Image.Transpose.FLIP_LEFT_RIGHT)
+            print(
+                f"saving a flipped version of {os.path.basename(filename)} "
+                f"as {outfile} "
+            )
+            im.save(outfile, SpiderImageFile.format)

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/SunImagePlugin.py

@@ -0,0 +1,139 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# Sun image file handling
+#
+# History:
+# 1995-09-10 fl   Created
+# 1996-05-28 fl   Fixed 32-bit alignment
+# 1998-12-29 fl   Import ImagePalette module
+# 2001-12-18 fl   Fixed palette loading (from Jean-Claude Rimbault)
+#
+# Copyright (c) 1997-2001 by Secret Labs AB
+# Copyright (c) 1995-1996 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import i32be as i32
+
+
+def _accept(prefix):
+    return len(prefix) >= 4 and i32(prefix) == 0x59A66A95
+
+
+##
+# Image plugin for Sun raster files.
+
+
+class SunImageFile(ImageFile.ImageFile):
+    format = "SUN"
+    format_description = "Sun Raster File"
+
+    def _open(self):
+        # The Sun Raster file header is 32 bytes in length
+        # and has the following format:
+
+        #     typedef struct _SunRaster
+        #     {
+        #         DWORD MagicNumber;      /* Magic (identification) number */
+        #         DWORD Width;            /* Width of image in pixels */
+        #         DWORD Height;           /* Height of image in pixels */
+        #         DWORD Depth;            /* Number of bits per pixel */
+        #         DWORD Length;           /* Size of image data in bytes */
+        #         DWORD Type;             /* Type of raster file */
+        #         DWORD ColorMapType;     /* Type of color map */
+        #         DWORD ColorMapLength;   /* Size of the color map in bytes */
+        #     } SUNRASTER;
+
+        # HEAD
+        s = self.fp.read(32)
+        if not _accept(s):
+            msg = "not an SUN raster file"
+            raise SyntaxError(msg)
+
+        offset = 32
+
+        self._size = i32(s, 4), i32(s, 8)
+
+        depth = i32(s, 12)
+        # data_length = i32(s, 16)   # unreliable, ignore.
+        file_type = i32(s, 20)
+        palette_type = i32(s, 24)  # 0: None, 1: RGB, 2: Raw/arbitrary
+        palette_length = i32(s, 28)
+
+        if depth == 1:
+            self.mode, rawmode = "1", "1;I"
+        elif depth == 4:
+            self.mode, rawmode = "L", "L;4"
+        elif depth == 8:
+            self.mode = rawmode = "L"
+        elif depth == 24:
+            if file_type == 3:
+                self.mode, rawmode = "RGB", "RGB"
+            else:
+                self.mode, rawmode = "RGB", "BGR"
+        elif depth == 32:
+            if file_type == 3:
+                self.mode, rawmode = "RGB", "RGBX"
+            else:
+                self.mode, rawmode = "RGB", "BGRX"
+        else:
+            msg = "Unsupported Mode/Bit Depth"
+            raise SyntaxError(msg)
+
+        if palette_length:
+            if palette_length > 1024:
+                msg = "Unsupported Color Palette Length"
+                raise SyntaxError(msg)
+
+            if palette_type != 1:
+                msg = "Unsupported Palette Type"
+                raise SyntaxError(msg)
+
+            offset = offset + palette_length
+            self.palette = ImagePalette.raw("RGB;L", self.fp.read(palette_length))
+            if self.mode == "L":
+                self.mode = "P"
+                rawmode = rawmode.replace("L", "P")
+
+        # 16 bit boundaries on stride
+        stride = ((self.size[0] * depth + 15) // 16) * 2
+
+        # file type: Type is the version (or flavor) of the bitmap
+        # file. The following values are typically found in the Type
+        # field:
+        # 0000h Old
+        # 0001h Standard
+        # 0002h Byte-encoded
+        # 0003h RGB format
+        # 0004h TIFF format
+        # 0005h IFF format
+        # FFFFh Experimental
+
+        # Old and standard are the same, except for the length tag.
+        # byte-encoded is run-length-encoded
+        # RGB looks similar to standard, but RGB byte order
+        # TIFF and IFF mean that they were converted from T/IFF
+        # Experimental means that it's something else.
+        # (https://www.fileformat.info/format/sunraster/egff.htm)
+
+        if file_type in (0, 1, 3, 4, 5):
+            self.tile = [("raw", (0, 0) + self.size, offset, (rawmode, stride))]
+        elif file_type == 2:
+            self.tile = [("sun_rle", (0, 0) + self.size, offset, rawmode)]
+        else:
+            msg = "Unsupported Sun Raster file type"
+            raise SyntaxError(msg)
+
+
+#
+# registry
+
+
+Image.register_open(SunImageFile.format, SunImageFile, _accept)
+
+Image.register_extension(SunImageFile.format, ".ras")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/TarIO.py

@@ -0,0 +1,66 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# read files from within a tar file
+#
+# History:
+# 95-06-18 fl   Created
+# 96-05-28 fl   Open files in binary mode
+#
+# Copyright (c) Secret Labs AB 1997.
+# Copyright (c) Fredrik Lundh 1995-96.
+#
+# See the README file for information on usage and redistribution.
+#
+
+import io
+
+from . import ContainerIO
+
+
+class TarIO(ContainerIO.ContainerIO):
+    """A file object that provides read access to a given member of a TAR file."""
+
+    def __init__(self, tarfile, file):
+        """
+        Create file object.
+
+        :param tarfile: Name of TAR file.
+        :param file: Name of member file.
+        """
+        self.fh = open(tarfile, "rb")
+
+        while True:
+            s = self.fh.read(512)
+            if len(s) != 512:
+                msg = "unexpected end of tar file"
+                raise OSError(msg)
+
+            name = s[:100].decode("utf-8")
+            i = name.find("\0")
+            if i == 0:
+                msg = "cannot find subfile"
+                raise OSError(msg)
+            if i > 0:
+                name = name[:i]
+
+            size = int(s[124:135], 8)
+
+            if file == name:
+                break
+
+            self.fh.seek((size + 511) & (~511), io.SEEK_CUR)
+
+        # Open region
+        super().__init__(self.fh, self.fh.tell(), size)
+
+    # Context manager support
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *args):
+        self.close()
+
+    def close(self):
+        self.fh.close()

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/TgaImagePlugin.py

@@ -0,0 +1,255 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# TGA file handling
+#
+# History:
+# 95-09-01 fl   created (reads 24-bit files only)
+# 97-01-04 fl   support more TGA versions, including compressed images
+# 98-07-04 fl   fixed orientation and alpha layer bugs
+# 98-09-11 fl   fixed orientation for runlength decoder
+#
+# Copyright (c) Secret Labs AB 1997-98.
+# Copyright (c) Fredrik Lundh 1995-97.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+import warnings
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import i16le as i16
+from ._binary import o8
+from ._binary import o16le as o16
+
+#
+# --------------------------------------------------------------------
+# Read RGA file
+
+
+MODES = {
+    # map imagetype/depth to rawmode
+    (1, 8): "P",
+    (3, 1): "1",
+    (3, 8): "L",
+    (3, 16): "LA",
+    (2, 16): "BGR;5",
+    (2, 24): "BGR",
+    (2, 32): "BGRA",
+}
+
+
+##
+# Image plugin for Targa files.
+
+
+class TgaImageFile(ImageFile.ImageFile):
+    format = "TGA"
+    format_description = "Targa"
+
+    def _open(self):
+        # process header
+        s = self.fp.read(18)
+
+        id_len = s[0]
+
+        colormaptype = s[1]
+        imagetype = s[2]
+
+        depth = s[16]
+
+        flags = s[17]
+
+        self._size = i16(s, 12), i16(s, 14)
+
+        # validate header fields
+        if (
+            colormaptype not in (0, 1)
+            or self.size[0] <= 0
+            or self.size[1] <= 0
+            or depth not in (1, 8, 16, 24, 32)
+        ):
+            msg = "not a TGA file"
+            raise SyntaxError(msg)
+
+        # image mode
+        if imagetype in (3, 11):
+            self.mode = "L"
+            if depth == 1:
+                self.mode = "1"  # ???
+            elif depth == 16:
+                self.mode = "LA"
+        elif imagetype in (1, 9):
+            self.mode = "P"
+        elif imagetype in (2, 10):
+            self.mode = "RGB"
+            if depth == 32:
+                self.mode = "RGBA"
+        else:
+            msg = "unknown TGA mode"
+            raise SyntaxError(msg)
+
+        # orientation
+        orientation = flags & 0x30
+        self._flip_horizontally = orientation in [0x10, 0x30]
+        if orientation in [0x20, 0x30]:
+            orientation = 1
+        elif orientation in [0, 0x10]:
+            orientation = -1
+        else:
+            msg = "unknown TGA orientation"
+            raise SyntaxError(msg)
+
+        self.info["orientation"] = orientation
+
+        if imagetype & 8:
+            self.info["compression"] = "tga_rle"
+
+        if id_len:
+            self.info["id_section"] = self.fp.read(id_len)
+
+        if colormaptype:
+            # read palette
+            start, size, mapdepth = i16(s, 3), i16(s, 5), s[7]
+            if mapdepth == 16:
+                self.palette = ImagePalette.raw(
+                    "BGR;15", b"\0" * 2 * start + self.fp.read(2 * size)
+                )
+            elif mapdepth == 24:
+                self.palette = ImagePalette.raw(
+                    "BGR", b"\0" * 3 * start + self.fp.read(3 * size)
+                )
+            elif mapdepth == 32:
+                self.palette = ImagePalette.raw(
+                    "BGRA", b"\0" * 4 * start + self.fp.read(4 * size)
+                )
+
+        # setup tile descriptor
+        try:
+            rawmode = MODES[(imagetype & 7, depth)]
+            if imagetype & 8:
+                # compressed
+                self.tile = [
+                    (
+                        "tga_rle",
+                        (0, 0) + self.size,
+                        self.fp.tell(),
+                        (rawmode, orientation, depth),
+                    )
+                ]
+            else:
+                self.tile = [
+                    (
+                        "raw",
+                        (0, 0) + self.size,
+                        self.fp.tell(),
+                        (rawmode, 0, orientation),
+                    )
+                ]
+        except KeyError:
+            pass  # cannot decode
+
+    def load_end(self):
+        if self._flip_horizontally:
+            self.im = self.im.transpose(Image.Transpose.FLIP_LEFT_RIGHT)
+
+
+#
+# --------------------------------------------------------------------
+# Write TGA file
+
+
+SAVE = {
+    "1": ("1", 1, 0, 3),
+    "L": ("L", 8, 0, 3),
+    "LA": ("LA", 16, 0, 3),
+    "P": ("P", 8, 1, 1),
+    "RGB": ("BGR", 24, 0, 2),
+    "RGBA": ("BGRA", 32, 0, 2),
+}
+
+
+def _save(im, fp, filename):
+    try:
+        rawmode, bits, colormaptype, imagetype = SAVE[im.mode]
+    except KeyError as e:
+        msg = f"cannot write mode {im.mode} as TGA"
+        raise OSError(msg) from e
+
+    if "rle" in im.encoderinfo:
+        rle = im.encoderinfo["rle"]
+    else:
+        compression = im.encoderinfo.get("compression", im.info.get("compression"))
+        rle = compression == "tga_rle"
+    if rle:
+        imagetype += 8
+
+    id_section = im.encoderinfo.get("id_section", im.info.get("id_section", ""))
+    id_len = len(id_section)
+    if id_len > 255:
+        id_len = 255
+        id_section = id_section[:255]
+        warnings.warn("id_section has been trimmed to 255 characters")
+
+    if colormaptype:
+        palette = im.im.getpalette("RGB", "BGR")
+        colormaplength, colormapentry = len(palette) // 3, 24
+    else:
+        colormaplength, colormapentry = 0, 0
+
+    if im.mode in ("LA", "RGBA"):
+        flags = 8
+    else:
+        flags = 0
+
+    orientation = im.encoderinfo.get("orientation", im.info.get("orientation", -1))
+    if orientation > 0:
+        flags = flags | 0x20
+
+    fp.write(
+        o8(id_len)
+        + o8(colormaptype)
+        + o8(imagetype)
+        + o16(0)  # colormapfirst
+        + o16(colormaplength)
+        + o8(colormapentry)
+        + o16(0)
+        + o16(0)
+        + o16(im.size[0])
+        + o16(im.size[1])
+        + o8(bits)
+        + o8(flags)
+    )
+
+    if id_section:
+        fp.write(id_section)
+
+    if colormaptype:
+        fp.write(palette)
+
+    if rle:
+        ImageFile._save(
+            im, fp, [("tga_rle", (0, 0) + im.size, 0, (rawmode, orientation))]
+        )
+    else:
+        ImageFile._save(
+            im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, orientation))]
+        )
+
+    # write targa version 2 footer
+    fp.write(b"\000" * 8 + b"TRUEVISION-XFILE." + b"\000")
+
+
+#
+# --------------------------------------------------------------------
+# Registry
+
+
+Image.register_open(TgaImageFile.format, TgaImageFile)
+Image.register_save(TgaImageFile.format, _save)
+
+Image.register_extensions(TgaImageFile.format, [".tga", ".icb", ".vda", ".vst"])
+
+Image.register_mime(TgaImageFile.format, "image/x-tga")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/TiffTags.py

@@ -0,0 +1,560 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# TIFF tags
+#
+# This module provides clear-text names for various well-known
+# TIFF tags.  the TIFF codec works just fine without it.
+#
+# Copyright (c) Secret Labs AB 1999.
+#
+# See the README file for information on usage and redistribution.
+#
+
+##
+# This module provides constants and clear-text names for various
+# well-known TIFF tags.
+##
+
+from collections import namedtuple
+
+
+class TagInfo(namedtuple("_TagInfo", "value name type length enum")):
+    __slots__ = []
+
+    def __new__(cls, value=None, name="unknown", type=None, length=None, enum=None):
+        return super().__new__(cls, value, name, type, length, enum or {})
+
+    def cvt_enum(self, value):
+        # Using get will call hash(value), which can be expensive
+        # for some types (e.g. Fraction). Since self.enum is rarely
+        # used, it's usually better to test it first.
+        return self.enum.get(value, value) if self.enum else value
+
+
+def lookup(tag, group=None):
+    """
+    :param tag: Integer tag number
+    :param group: Which :py:data:`~PIL.TiffTags.TAGS_V2_GROUPS` to look in
+
+    .. versionadded:: 8.3.0
+
+    :returns: Taginfo namedtuple, From the ``TAGS_V2`` info if possible,
+        otherwise just populating the value and name from ``TAGS``.
+        If the tag is not recognized, "unknown" is returned for the name
+
+    """
+
+    if group is not None:
+        info = TAGS_V2_GROUPS[group].get(tag) if group in TAGS_V2_GROUPS else None
+    else:
+        info = TAGS_V2.get(tag)
+    return info or TagInfo(tag, TAGS.get(tag, "unknown"))
+
+
+##
+# Map tag numbers to tag info.
+#
+#  id: (Name, Type, Length, enum_values)
+#
+# The length here differs from the length in the tiff spec.  For
+# numbers, the tiff spec is for the number of fields returned. We
+# agree here.  For string-like types, the tiff spec uses the length of
+# field in bytes.  In Pillow, we are using the number of expected
+# fields, in general 1 for string-like types.
+
+
+BYTE = 1
+ASCII = 2
+SHORT = 3
+LONG = 4
+RATIONAL = 5
+SIGNED_BYTE = 6
+UNDEFINED = 7
+SIGNED_SHORT = 8
+SIGNED_LONG = 9
+SIGNED_RATIONAL = 10
+FLOAT = 11
+DOUBLE = 12
+IFD = 13
+LONG8 = 16
+
+TAGS_V2 = {
+    254: ("NewSubfileType", LONG, 1),
+    255: ("SubfileType", SHORT, 1),
+    256: ("ImageWidth", LONG, 1),
+    257: ("ImageLength", LONG, 1),
+    258: ("BitsPerSample", SHORT, 0),
+    259: (
+        "Compression",
+        SHORT,
+        1,
+        {
+            "Uncompressed": 1,
+            "CCITT 1d": 2,
+            "Group 3 Fax": 3,
+            "Group 4 Fax": 4,
+            "LZW": 5,
+            "JPEG": 6,
+            "PackBits": 32773,
+        },
+    ),
+    262: (
+        "PhotometricInterpretation",
+        SHORT,
+        1,
+        {
+            "WhiteIsZero": 0,
+            "BlackIsZero": 1,
+            "RGB": 2,
+            "RGB Palette": 3,
+            "Transparency Mask": 4,
+            "CMYK": 5,
+            "YCbCr": 6,
+            "CieLAB": 8,
+            "CFA": 32803,  # TIFF/EP, Adobe DNG
+            "LinearRaw": 32892,  # Adobe DNG
+        },
+    ),
+    263: ("Threshholding", SHORT, 1),
+    264: ("CellWidth", SHORT, 1),
+    265: ("CellLength", SHORT, 1),
+    266: ("FillOrder", SHORT, 1),
+    269: ("DocumentName", ASCII, 1),
+    270: ("ImageDescription", ASCII, 1),
+    271: ("Make", ASCII, 1),
+    272: ("Model", ASCII, 1),
+    273: ("StripOffsets", LONG, 0),
+    274: ("Orientation", SHORT, 1),
+    277: ("SamplesPerPixel", SHORT, 1),
+    278: ("RowsPerStrip", LONG, 1),
+    279: ("StripByteCounts", LONG, 0),
+    280: ("MinSampleValue", SHORT, 0),
+    281: ("MaxSampleValue", SHORT, 0),
+    282: ("XResolution", RATIONAL, 1),
+    283: ("YResolution", RATIONAL, 1),
+    284: ("PlanarConfiguration", SHORT, 1, {"Contiguous": 1, "Separate": 2}),
+    285: ("PageName", ASCII, 1),
+    286: ("XPosition", RATIONAL, 1),
+    287: ("YPosition", RATIONAL, 1),
+    288: ("FreeOffsets", LONG, 1),
+    289: ("FreeByteCounts", LONG, 1),
+    290: ("GrayResponseUnit", SHORT, 1),
+    291: ("GrayResponseCurve", SHORT, 0),
+    292: ("T4Options", LONG, 1),
+    293: ("T6Options", LONG, 1),
+    296: ("ResolutionUnit", SHORT, 1, {"none": 1, "inch": 2, "cm": 3}),
+    297: ("PageNumber", SHORT, 2),
+    301: ("TransferFunction", SHORT, 0),
+    305: ("Software", ASCII, 1),
+    306: ("DateTime", ASCII, 1),
+    315: ("Artist", ASCII, 1),
+    316: ("HostComputer", ASCII, 1),
+    317: ("Predictor", SHORT, 1, {"none": 1, "Horizontal Differencing": 2}),
+    318: ("WhitePoint", RATIONAL, 2),
+    319: ("PrimaryChromaticities", RATIONAL, 6),
+    320: ("ColorMap", SHORT, 0),
+    321: ("HalftoneHints", SHORT, 2),
+    322: ("TileWidth", LONG, 1),
+    323: ("TileLength", LONG, 1),
+    324: ("TileOffsets", LONG, 0),
+    325: ("TileByteCounts", LONG, 0),
+    330: ("SubIFDs", LONG, 0),
+    332: ("InkSet", SHORT, 1),
+    333: ("InkNames", ASCII, 1),
+    334: ("NumberOfInks", SHORT, 1),
+    336: ("DotRange", SHORT, 0),
+    337: ("TargetPrinter", ASCII, 1),
+    338: ("ExtraSamples", SHORT, 0),
+    339: ("SampleFormat", SHORT, 0),
+    340: ("SMinSampleValue", DOUBLE, 0),
+    341: ("SMaxSampleValue", DOUBLE, 0),
+    342: ("TransferRange", SHORT, 6),
+    347: ("JPEGTables", UNDEFINED, 1),
+    # obsolete JPEG tags
+    512: ("JPEGProc", SHORT, 1),
+    513: ("JPEGInterchangeFormat", LONG, 1),
+    514: ("JPEGInterchangeFormatLength", LONG, 1),
+    515: ("JPEGRestartInterval", SHORT, 1),
+    517: ("JPEGLosslessPredictors", SHORT, 0),
+    518: ("JPEGPointTransforms", SHORT, 0),
+    519: ("JPEGQTables", LONG, 0),
+    520: ("JPEGDCTables", LONG, 0),
+    521: ("JPEGACTables", LONG, 0),
+    529: ("YCbCrCoefficients", RATIONAL, 3),
+    530: ("YCbCrSubSampling", SHORT, 2),
+    531: ("YCbCrPositioning", SHORT, 1),
+    532: ("ReferenceBlackWhite", RATIONAL, 6),
+    700: ("XMP", BYTE, 0),
+    33432: ("Copyright", ASCII, 1),
+    33723: ("IptcNaaInfo", UNDEFINED, 1),
+    34377: ("PhotoshopInfo", BYTE, 0),
+    # FIXME add more tags here
+    34665: ("ExifIFD", LONG, 1),
+    34675: ("ICCProfile", UNDEFINED, 1),
+    34853: ("GPSInfoIFD", LONG, 1),
+    36864: ("ExifVersion", UNDEFINED, 1),
+    37724: ("ImageSourceData", UNDEFINED, 1),
+    40965: ("InteroperabilityIFD", LONG, 1),
+    41730: ("CFAPattern", UNDEFINED, 1),
+    # MPInfo
+    45056: ("MPFVersion", UNDEFINED, 1),
+    45057: ("NumberOfImages", LONG, 1),
+    45058: ("MPEntry", UNDEFINED, 1),
+    45059: ("ImageUIDList", UNDEFINED, 0),  # UNDONE, check
+    45060: ("TotalFrames", LONG, 1),
+    45313: ("MPIndividualNum", LONG, 1),
+    45569: ("PanOrientation", LONG, 1),
+    45570: ("PanOverlap_H", RATIONAL, 1),
+    45571: ("PanOverlap_V", RATIONAL, 1),
+    45572: ("BaseViewpointNum", LONG, 1),
+    45573: ("ConvergenceAngle", SIGNED_RATIONAL, 1),
+    45574: ("BaselineLength", RATIONAL, 1),
+    45575: ("VerticalDivergence", SIGNED_RATIONAL, 1),
+    45576: ("AxisDistance_X", SIGNED_RATIONAL, 1),
+    45577: ("AxisDistance_Y", SIGNED_RATIONAL, 1),
+    45578: ("AxisDistance_Z", SIGNED_RATIONAL, 1),
+    45579: ("YawAngle", SIGNED_RATIONAL, 1),
+    45580: ("PitchAngle", SIGNED_RATIONAL, 1),
+    45581: ("RollAngle", SIGNED_RATIONAL, 1),
+    40960: ("FlashPixVersion", UNDEFINED, 1),
+    50741: ("MakerNoteSafety", SHORT, 1, {"Unsafe": 0, "Safe": 1}),
+    50780: ("BestQualityScale", RATIONAL, 1),
+    50838: ("ImageJMetaDataByteCounts", LONG, 0),  # Can be more than one
+    50839: ("ImageJMetaData", UNDEFINED, 1),  # see Issue #2006
+}
+TAGS_V2_GROUPS = {
+    # ExifIFD
+    34665: {
+        36864: ("ExifVersion", UNDEFINED, 1),
+        40960: ("FlashPixVersion", UNDEFINED, 1),
+        40965: ("InteroperabilityIFD", LONG, 1),
+        41730: ("CFAPattern", UNDEFINED, 1),
+    },
+    # GPSInfoIFD
+    34853: {
+        0: ("GPSVersionID", BYTE, 4),
+        1: ("GPSLatitudeRef", ASCII, 2),
+        2: ("GPSLatitude", RATIONAL, 3),
+        3: ("GPSLongitudeRef", ASCII, 2),
+        4: ("GPSLongitude", RATIONAL, 3),
+        5: ("GPSAltitudeRef", BYTE, 1),
+        6: ("GPSAltitude", RATIONAL, 1),
+        7: ("GPSTimeStamp", RATIONAL, 3),
+        8: ("GPSSatellites", ASCII, 0),
+        9: ("GPSStatus", ASCII, 2),
+        10: ("GPSMeasureMode", ASCII, 2),
+        11: ("GPSDOP", RATIONAL, 1),
+        12: ("GPSSpeedRef", ASCII, 2),
+        13: ("GPSSpeed", RATIONAL, 1),
+        14: ("GPSTrackRef", ASCII, 2),
+        15: ("GPSTrack", RATIONAL, 1),
+        16: ("GPSImgDirectionRef", ASCII, 2),
+        17: ("GPSImgDirection", RATIONAL, 1),
+        18: ("GPSMapDatum", ASCII, 0),
+        19: ("GPSDestLatitudeRef", ASCII, 2),
+        20: ("GPSDestLatitude", RATIONAL, 3),
+        21: ("GPSDestLongitudeRef", ASCII, 2),
+        22: ("GPSDestLongitude", RATIONAL, 3),
+        23: ("GPSDestBearingRef", ASCII, 2),
+        24: ("GPSDestBearing", RATIONAL, 1),
+        25: ("GPSDestDistanceRef", ASCII, 2),
+        26: ("GPSDestDistance", RATIONAL, 1),
+        27: ("GPSProcessingMethod", UNDEFINED, 0),
+        28: ("GPSAreaInformation", UNDEFINED, 0),
+        29: ("GPSDateStamp", ASCII, 11),
+        30: ("GPSDifferential", SHORT, 1),
+    },
+    # InteroperabilityIFD
+    40965: {1: ("InteropIndex", ASCII, 1), 2: ("InteropVersion", UNDEFINED, 1)},
+}
+
+# Legacy Tags structure
+# these tags aren't included above, but were in the previous versions
+TAGS = {
+    347: "JPEGTables",
+    700: "XMP",
+    # Additional Exif Info
+    32932: "Wang Annotation",
+    33434: "ExposureTime",
+    33437: "FNumber",
+    33445: "MD FileTag",
+    33446: "MD ScalePixel",
+    33447: "MD ColorTable",
+    33448: "MD LabName",
+    33449: "MD SampleInfo",
+    33450: "MD PrepDate",
+    33451: "MD PrepTime",
+    33452: "MD FileUnits",
+    33550: "ModelPixelScaleTag",
+    33723: "IptcNaaInfo",
+    33918: "INGR Packet Data Tag",
+    33919: "INGR Flag Registers",
+    33920: "IrasB Transformation Matrix",
+    33922: "ModelTiepointTag",
+    34264: "ModelTransformationTag",
+    34377: "PhotoshopInfo",
+    34735: "GeoKeyDirectoryTag",
+    34736: "GeoDoubleParamsTag",
+    34737: "GeoAsciiParamsTag",
+    34850: "ExposureProgram",
+    34852: "SpectralSensitivity",
+    34855: "ISOSpeedRatings",
+    34856: "OECF",
+    34864: "SensitivityType",
+    34865: "StandardOutputSensitivity",
+    34866: "RecommendedExposureIndex",
+    34867: "ISOSpeed",
+    34868: "ISOSpeedLatitudeyyy",
+    34869: "ISOSpeedLatitudezzz",
+    34908: "HylaFAX FaxRecvParams",
+    34909: "HylaFAX FaxSubAddress",
+    34910: "HylaFAX FaxRecvTime",
+    36864: "ExifVersion",
+    36867: "DateTimeOriginal",
+    36868: "DateTimeDigitized",
+    37121: "ComponentsConfiguration",
+    37122: "CompressedBitsPerPixel",
+    37724: "ImageSourceData",
+    37377: "ShutterSpeedValue",
+    37378: "ApertureValue",
+    37379: "BrightnessValue",
+    37380: "ExposureBiasValue",
+    37381: "MaxApertureValue",
+    37382: "SubjectDistance",
+    37383: "MeteringMode",
+    37384: "LightSource",
+    37385: "Flash",
+    37386: "FocalLength",
+    37396: "SubjectArea",
+    37500: "MakerNote",
+    37510: "UserComment",
+    37520: "SubSec",
+    37521: "SubSecTimeOriginal",
+    37522: "SubsecTimeDigitized",
+    40960: "FlashPixVersion",
+    40961: "ColorSpace",
+    40962: "PixelXDimension",
+    40963: "PixelYDimension",
+    40964: "RelatedSoundFile",
+    40965: "InteroperabilityIFD",
+    41483: "FlashEnergy",
+    41484: "SpatialFrequencyResponse",
+    41486: "FocalPlaneXResolution",
+    41487: "FocalPlaneYResolution",
+    41488: "FocalPlaneResolutionUnit",
+    41492: "SubjectLocation",
+    41493: "ExposureIndex",
+    41495: "SensingMethod",
+    41728: "FileSource",
+    41729: "SceneType",
+    41730: "CFAPattern",
+    41985: "CustomRendered",
+    41986: "ExposureMode",
+    41987: "WhiteBalance",
+    41988: "DigitalZoomRatio",
+    41989: "FocalLengthIn35mmFilm",
+    41990: "SceneCaptureType",
+    41991: "GainControl",
+    41992: "Contrast",
+    41993: "Saturation",
+    41994: "Sharpness",
+    41995: "DeviceSettingDescription",
+    41996: "SubjectDistanceRange",
+    42016: "ImageUniqueID",
+    42032: "CameraOwnerName",
+    42033: "BodySerialNumber",
+    42034: "LensSpecification",
+    42035: "LensMake",
+    42036: "LensModel",
+    42037: "LensSerialNumber",
+    42112: "GDAL_METADATA",
+    42113: "GDAL_NODATA",
+    42240: "Gamma",
+    50215: "Oce Scanjob Description",
+    50216: "Oce Application Selector",
+    50217: "Oce Identification Number",
+    50218: "Oce ImageLogic Characteristics",
+    # Adobe DNG
+    50706: "DNGVersion",
+    50707: "DNGBackwardVersion",
+    50708: "UniqueCameraModel",
+    50709: "LocalizedCameraModel",
+    50710: "CFAPlaneColor",
+    50711: "CFALayout",
+    50712: "LinearizationTable",
+    50713: "BlackLevelRepeatDim",
+    50714: "BlackLevel",
+    50715: "BlackLevelDeltaH",
+    50716: "BlackLevelDeltaV",
+    50717: "WhiteLevel",
+    50718: "DefaultScale",
+    50719: "DefaultCropOrigin",
+    50720: "DefaultCropSize",
+    50721: "ColorMatrix1",
+    50722: "ColorMatrix2",
+    50723: "CameraCalibration1",
+    50724: "CameraCalibration2",
+    50725: "ReductionMatrix1",
+    50726: "ReductionMatrix2",
+    50727: "AnalogBalance",
+    50728: "AsShotNeutral",
+    50729: "AsShotWhiteXY",
+    50730: "BaselineExposure",
+    50731: "BaselineNoise",
+    50732: "BaselineSharpness",
+    50733: "BayerGreenSplit",
+    50734: "LinearResponseLimit",
+    50735: "CameraSerialNumber",
+    50736: "LensInfo",
+    50737: "ChromaBlurRadius",
+    50738: "AntiAliasStrength",
+    50740: "DNGPrivateData",
+    50778: "CalibrationIlluminant1",
+    50779: "CalibrationIlluminant2",
+    50784: "Alias Layer Metadata",
+}
+
+
+def _populate():
+    for k, v in TAGS_V2.items():
+        # Populate legacy structure.
+        TAGS[k] = v[0]
+        if len(v) == 4:
+            for sk, sv in v[3].items():
+                TAGS[(k, sv)] = sk
+
+        TAGS_V2[k] = TagInfo(k, *v)
+
+    for group, tags in TAGS_V2_GROUPS.items():
+        for k, v in tags.items():
+            tags[k] = TagInfo(k, *v)
+
+
+_populate()
+##
+# Map type numbers to type names -- defined in ImageFileDirectory.
+
+TYPES = {}
+
+# was:
+# TYPES = {
+#     1: "byte",
+#     2: "ascii",
+#     3: "short",
+#     4: "long",
+#     5: "rational",
+#     6: "signed byte",
+#     7: "undefined",
+#     8: "signed short",
+#     9: "signed long",
+#     10: "signed rational",
+#     11: "float",
+#     12: "double",
+# }
+
+#
+# These tags are handled by default in libtiff, without
+# adding to the custom dictionary. From tif_dir.c, searching for
+# case TIFFTAG in the _TIFFVSetField function:
+# Line: item.
+# 148: case TIFFTAG_SUBFILETYPE:
+# 151: case TIFFTAG_IMAGEWIDTH:
+# 154: case TIFFTAG_IMAGELENGTH:
+# 157: case TIFFTAG_BITSPERSAMPLE:
+# 181: case TIFFTAG_COMPRESSION:
+# 202: case TIFFTAG_PHOTOMETRIC:
+# 205: case TIFFTAG_THRESHHOLDING:
+# 208: case TIFFTAG_FILLORDER:
+# 214: case TIFFTAG_ORIENTATION:
+# 221: case TIFFTAG_SAMPLESPERPIXEL:
+# 228: case TIFFTAG_ROWSPERSTRIP:
+# 238: case TIFFTAG_MINSAMPLEVALUE:
+# 241: case TIFFTAG_MAXSAMPLEVALUE:
+# 244: case TIFFTAG_SMINSAMPLEVALUE:
+# 247: case TIFFTAG_SMAXSAMPLEVALUE:
+# 250: case TIFFTAG_XRESOLUTION:
+# 256: case TIFFTAG_YRESOLUTION:
+# 262: case TIFFTAG_PLANARCONFIG:
+# 268: case TIFFTAG_XPOSITION:
+# 271: case TIFFTAG_YPOSITION:
+# 274: case TIFFTAG_RESOLUTIONUNIT:
+# 280: case TIFFTAG_PAGENUMBER:
+# 284: case TIFFTAG_HALFTONEHINTS:
+# 288: case TIFFTAG_COLORMAP:
+# 294: case TIFFTAG_EXTRASAMPLES:
+# 298: case TIFFTAG_MATTEING:
+# 305: case TIFFTAG_TILEWIDTH:
+# 316: case TIFFTAG_TILELENGTH:
+# 327: case TIFFTAG_TILEDEPTH:
+# 333: case TIFFTAG_DATATYPE:
+# 344: case TIFFTAG_SAMPLEFORMAT:
+# 361: case TIFFTAG_IMAGEDEPTH:
+# 364: case TIFFTAG_SUBIFD:
+# 376: case TIFFTAG_YCBCRPOSITIONING:
+# 379: case TIFFTAG_YCBCRSUBSAMPLING:
+# 383: case TIFFTAG_TRANSFERFUNCTION:
+# 389: case TIFFTAG_REFERENCEBLACKWHITE:
+# 393: case TIFFTAG_INKNAMES:
+
+# Following pseudo-tags are also handled by default in libtiff:
+# TIFFTAG_JPEGQUALITY 65537
+
+# some of these are not in our TAGS_V2 dict and were included from tiff.h
+
+# This list also exists in encode.c
+LIBTIFF_CORE = {
+    255,
+    256,
+    257,
+    258,
+    259,
+    262,
+    263,
+    266,
+    274,
+    277,
+    278,
+    280,
+    281,
+    340,
+    341,
+    282,
+    283,
+    284,
+    286,
+    287,
+    296,
+    297,
+    321,
+    320,
+    338,
+    32995,
+    322,
+    323,
+    32998,
+    32996,
+    339,
+    32997,
+    330,
+    531,
+    530,
+    301,
+    532,
+    333,
+    # as above
+    269,  # this has been in our tests forever, and works
+    65537,
+}
+
+LIBTIFF_CORE.remove(255)  # We don't have support for subfiletypes
+LIBTIFF_CORE.remove(322)  # We don't have support for writing tiled images with libtiff
+LIBTIFF_CORE.remove(323)  # Tiled images
+LIBTIFF_CORE.remove(333)  # Ink Names either
+
+# Note to advanced users: There may be combinations of these
+# parameters and values that when added properly, will work and
+# produce valid tiff images that may work in your application.
+# It is safe to add and remove tags from this set from Pillow's point
+# of view so long as you test against libtiff.

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/WalImageFile.py

@@ -0,0 +1,123 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# WAL file handling
+#
+# History:
+# 2003-04-23 fl   created
+#
+# Copyright (c) 2003 by Fredrik Lundh.
+#
+# See the README file for information on usage and redistribution.
+#
+
+"""
+This reader is based on the specification available from:
+https://www.flipcode.com/archives/Quake_2_BSP_File_Format.shtml
+and has been tested with a few sample files found using google.
+
+.. note::
+    This format cannot be automatically recognized, so the reader
+    is not registered for use with :py:func:`PIL.Image.open()`.
+    To open a WAL file, use the :py:func:`PIL.WalImageFile.open()` function instead.
+"""
+
+from . import Image, ImageFile
+from ._binary import i32le as i32
+
+
+class WalImageFile(ImageFile.ImageFile):
+    format = "WAL"
+    format_description = "Quake2 Texture"
+
+    def _open(self):
+        self.mode = "P"
+
+        # read header fields
+        header = self.fp.read(32 + 24 + 32 + 12)
+        self._size = i32(header, 32), i32(header, 36)
+        Image._decompression_bomb_check(self.size)
+
+        # load pixel data
+        offset = i32(header, 40)
+        self.fp.seek(offset)
+
+        # strings are null-terminated
+        self.info["name"] = header[:32].split(b"\0", 1)[0]
+        next_name = header[56 : 56 + 32].split(b"\0", 1)[0]
+        if next_name:
+            self.info["next_name"] = next_name
+
+    def load(self):
+        if not self.im:
+            self.im = Image.core.new(self.mode, self.size)
+            self.frombytes(self.fp.read(self.size[0] * self.size[1]))
+            self.putpalette(quake2palette)
+        return Image.Image.load(self)
+
+
+def open(filename):
+    """
+    Load texture from a Quake2 WAL texture file.
+
+    By default, a Quake2 standard palette is attached to the texture.
+    To override the palette, use the :py:func:`PIL.Image.Image.putpalette()` method.
+
+    :param filename: WAL file name, or an opened file handle.
+    :returns: An image instance.
+    """
+    return WalImageFile(filename)
+
+
+quake2palette = (
+    # default palette taken from piffo 0.93 by Hans Häggström
+    b"\x01\x01\x01\x0b\x0b\x0b\x12\x12\x12\x17\x17\x17\x1b\x1b\x1b\x1e"
+    b"\x1e\x1e\x22\x22\x22\x26\x26\x26\x29\x29\x29\x2c\x2c\x2c\x2f\x2f"
+    b"\x2f\x32\x32\x32\x35\x35\x35\x37\x37\x37\x3a\x3a\x3a\x3c\x3c\x3c"
+    b"\x24\x1e\x13\x22\x1c\x12\x20\x1b\x12\x1f\x1a\x10\x1d\x19\x10\x1b"
+    b"\x17\x0f\x1a\x16\x0f\x18\x14\x0d\x17\x13\x0d\x16\x12\x0d\x14\x10"
+    b"\x0b\x13\x0f\x0b\x10\x0d\x0a\x0f\x0b\x0a\x0d\x0b\x07\x0b\x0a\x07"
+    b"\x23\x23\x26\x22\x22\x25\x22\x20\x23\x21\x1f\x22\x20\x1e\x20\x1f"
+    b"\x1d\x1e\x1d\x1b\x1c\x1b\x1a\x1a\x1a\x19\x19\x18\x17\x17\x17\x16"
+    b"\x16\x14\x14\x14\x13\x13\x13\x10\x10\x10\x0f\x0f\x0f\x0d\x0d\x0d"
+    b"\x2d\x28\x20\x29\x24\x1c\x27\x22\x1a\x25\x1f\x17\x38\x2e\x1e\x31"
+    b"\x29\x1a\x2c\x25\x17\x26\x20\x14\x3c\x30\x14\x37\x2c\x13\x33\x28"
+    b"\x12\x2d\x24\x10\x28\x1f\x0f\x22\x1a\x0b\x1b\x14\x0a\x13\x0f\x07"
+    b"\x31\x1a\x16\x30\x17\x13\x2e\x16\x10\x2c\x14\x0d\x2a\x12\x0b\x27"
+    b"\x0f\x0a\x25\x0f\x07\x21\x0d\x01\x1e\x0b\x01\x1c\x0b\x01\x1a\x0b"
+    b"\x01\x18\x0a\x01\x16\x0a\x01\x13\x0a\x01\x10\x07\x01\x0d\x07\x01"
+    b"\x29\x23\x1e\x27\x21\x1c\x26\x20\x1b\x25\x1f\x1a\x23\x1d\x19\x21"
+    b"\x1c\x18\x20\x1b\x17\x1e\x19\x16\x1c\x18\x14\x1b\x17\x13\x19\x14"
+    b"\x10\x17\x13\x0f\x14\x10\x0d\x12\x0f\x0b\x0f\x0b\x0a\x0b\x0a\x07"
+    b"\x26\x1a\x0f\x23\x19\x0f\x20\x17\x0f\x1c\x16\x0f\x19\x13\x0d\x14"
+    b"\x10\x0b\x10\x0d\x0a\x0b\x0a\x07\x33\x22\x1f\x35\x29\x26\x37\x2f"
+    b"\x2d\x39\x35\x34\x37\x39\x3a\x33\x37\x39\x30\x34\x36\x2b\x31\x34"
+    b"\x27\x2e\x31\x22\x2b\x2f\x1d\x28\x2c\x17\x25\x2a\x0f\x20\x26\x0d"
+    b"\x1e\x25\x0b\x1c\x22\x0a\x1b\x20\x07\x19\x1e\x07\x17\x1b\x07\x14"
+    b"\x18\x01\x12\x16\x01\x0f\x12\x01\x0b\x0d\x01\x07\x0a\x01\x01\x01"
+    b"\x2c\x21\x21\x2a\x1f\x1f\x29\x1d\x1d\x27\x1c\x1c\x26\x1a\x1a\x24"
+    b"\x18\x18\x22\x17\x17\x21\x16\x16\x1e\x13\x13\x1b\x12\x12\x18\x10"
+    b"\x10\x16\x0d\x0d\x12\x0b\x0b\x0d\x0a\x0a\x0a\x07\x07\x01\x01\x01"
+    b"\x2e\x30\x29\x2d\x2e\x27\x2b\x2c\x26\x2a\x2a\x24\x28\x29\x23\x27"
+    b"\x27\x21\x26\x26\x1f\x24\x24\x1d\x22\x22\x1c\x1f\x1f\x1a\x1c\x1c"
+    b"\x18\x19\x19\x16\x17\x17\x13\x13\x13\x10\x0f\x0f\x0d\x0b\x0b\x0a"
+    b"\x30\x1e\x1b\x2d\x1c\x19\x2c\x1a\x17\x2a\x19\x14\x28\x17\x13\x26"
+    b"\x16\x10\x24\x13\x0f\x21\x12\x0d\x1f\x10\x0b\x1c\x0f\x0a\x19\x0d"
+    b"\x0a\x16\x0b\x07\x12\x0a\x07\x0f\x07\x01\x0a\x01\x01\x01\x01\x01"
+    b"\x28\x29\x38\x26\x27\x36\x25\x26\x34\x24\x24\x31\x22\x22\x2f\x20"
+    b"\x21\x2d\x1e\x1f\x2a\x1d\x1d\x27\x1b\x1b\x25\x19\x19\x21\x17\x17"
+    b"\x1e\x14\x14\x1b\x13\x12\x17\x10\x0f\x13\x0d\x0b\x0f\x0a\x07\x07"
+    b"\x2f\x32\x29\x2d\x30\x26\x2b\x2e\x24\x29\x2c\x21\x27\x2a\x1e\x25"
+    b"\x28\x1c\x23\x26\x1a\x21\x25\x18\x1e\x22\x14\x1b\x1f\x10\x19\x1c"
+    b"\x0d\x17\x1a\x0a\x13\x17\x07\x10\x13\x01\x0d\x0f\x01\x0a\x0b\x01"
+    b"\x01\x3f\x01\x13\x3c\x0b\x1b\x39\x10\x20\x35\x14\x23\x31\x17\x23"
+    b"\x2d\x18\x23\x29\x18\x3f\x3f\x3f\x3f\x3f\x39\x3f\x3f\x31\x3f\x3f"
+    b"\x2a\x3f\x3f\x20\x3f\x3f\x14\x3f\x3c\x12\x3f\x39\x0f\x3f\x35\x0b"
+    b"\x3f\x32\x07\x3f\x2d\x01\x3d\x2a\x01\x3b\x26\x01\x39\x21\x01\x37"
+    b"\x1d\x01\x34\x1a\x01\x32\x16\x01\x2f\x12\x01\x2d\x0f\x01\x2a\x0b"
+    b"\x01\x27\x07\x01\x23\x01\x01\x1d\x01\x01\x17\x01\x01\x10\x01\x01"
+    b"\x3d\x01\x01\x19\x19\x3f\x3f\x01\x01\x01\x01\x3f\x16\x16\x13\x10"
+    b"\x10\x0f\x0d\x0d\x0b\x3c\x2e\x2a\x36\x27\x20\x30\x21\x18\x29\x1b"
+    b"\x10\x3c\x39\x37\x37\x32\x2f\x31\x2c\x28\x2b\x26\x21\x30\x22\x20"
+)

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/WebPImagePlugin.py

@@ -0,0 +1,366 @@
+from io import BytesIO
+
+from . import Image, ImageFile
+
+try:
+    from . import _webp
+
+    SUPPORTED = True
+except ImportError:
+    SUPPORTED = False
+
+
+_VALID_WEBP_MODES = {"RGBX": True, "RGBA": True, "RGB": True}
+
+_VALID_WEBP_LEGACY_MODES = {"RGB": True, "RGBA": True}
+
+_VP8_MODES_BY_IDENTIFIER = {
+    b"VP8 ": "RGB",
+    b"VP8X": "RGBA",
+    b"VP8L": "RGBA",  # lossless
+}
+
+
+def _accept(prefix):
+    is_riff_file_format = prefix[:4] == b"RIFF"
+    is_webp_file = prefix[8:12] == b"WEBP"
+    is_valid_vp8_mode = prefix[12:16] in _VP8_MODES_BY_IDENTIFIER
+
+    if is_riff_file_format and is_webp_file and is_valid_vp8_mode:
+        if not SUPPORTED:
+            return (
+                "image file could not be identified because WEBP support not installed"
+            )
+        return True
+
+
+class WebPImageFile(ImageFile.ImageFile):
+    format = "WEBP"
+    format_description = "WebP image"
+    __loaded = 0
+    __logical_frame = 0
+
+    def _open(self):
+        if not _webp.HAVE_WEBPANIM:
+            # Legacy mode
+            data, width, height, self.mode, icc_profile, exif = _webp.WebPDecode(
+                self.fp.read()
+            )
+            if icc_profile:
+                self.info["icc_profile"] = icc_profile
+            if exif:
+                self.info["exif"] = exif
+            self._size = width, height
+            self.fp = BytesIO(data)
+            self.tile = [("raw", (0, 0) + self.size, 0, self.mode)]
+            self.n_frames = 1
+            self.is_animated = False
+            return
+
+        # Use the newer AnimDecoder API to parse the (possibly) animated file,
+        # and access muxed chunks like ICC/EXIF/XMP.
+        self._decoder = _webp.WebPAnimDecoder(self.fp.read())
+
+        # Get info from decoder
+        width, height, loop_count, bgcolor, frame_count, mode = self._decoder.get_info()
+        self._size = width, height
+        self.info["loop"] = loop_count
+        bg_a, bg_r, bg_g, bg_b = (
+            (bgcolor >> 24) & 0xFF,
+            (bgcolor >> 16) & 0xFF,
+            (bgcolor >> 8) & 0xFF,
+            bgcolor & 0xFF,
+        )
+        self.info["background"] = (bg_r, bg_g, bg_b, bg_a)
+        self.n_frames = frame_count
+        self.is_animated = self.n_frames > 1
+        self.mode = "RGB" if mode == "RGBX" else mode
+        self.rawmode = mode
+        self.tile = []
+
+        # Attempt to read ICC / EXIF / XMP chunks from file
+        icc_profile = self._decoder.get_chunk("ICCP")
+        exif = self._decoder.get_chunk("EXIF")
+        xmp = self._decoder.get_chunk("XMP ")
+        if icc_profile:
+            self.info["icc_profile"] = icc_profile
+        if exif:
+            self.info["exif"] = exif
+        if xmp:
+            self.info["xmp"] = xmp
+
+        # Initialize seek state
+        self._reset(reset=False)
+
+    def _getexif(self):
+        if "exif" not in self.info:
+            return None
+        return self.getexif()._get_merged_dict()
+
+    def getxmp(self):
+        """
+        Returns a dictionary containing the XMP tags.
+        Requires defusedxml to be installed.
+
+        :returns: XMP tags in a dictionary.
+        """
+        return self._getxmp(self.info["xmp"]) if "xmp" in self.info else {}
+
+    def seek(self, frame):
+        if not self._seek_check(frame):
+            return
+
+        # Set logical frame to requested position
+        self.__logical_frame = frame
+
+    def _reset(self, reset=True):
+        if reset:
+            self._decoder.reset()
+        self.__physical_frame = 0
+        self.__loaded = -1
+        self.__timestamp = 0
+
+    def _get_next(self):
+        # Get next frame
+        ret = self._decoder.get_next()
+        self.__physical_frame += 1
+
+        # Check if an error occurred
+        if ret is None:
+            self._reset()  # Reset just to be safe
+            self.seek(0)
+            msg = "failed to decode next frame in WebP file"
+            raise EOFError(msg)
+
+        # Compute duration
+        data, timestamp = ret
+        duration = timestamp - self.__timestamp
+        self.__timestamp = timestamp
+
+        # libwebp gives frame end, adjust to start of frame
+        timestamp -= duration
+        return data, timestamp, duration
+
+    def _seek(self, frame):
+        if self.__physical_frame == frame:
+            return  # Nothing to do
+        if frame < self.__physical_frame:
+            self._reset()  # Rewind to beginning
+        while self.__physical_frame < frame:
+            self._get_next()  # Advance to the requested frame
+
+    def load(self):
+        if _webp.HAVE_WEBPANIM:
+            if self.__loaded != self.__logical_frame:
+                self._seek(self.__logical_frame)
+
+                # We need to load the image data for this frame
+                data, timestamp, duration = self._get_next()
+                self.info["timestamp"] = timestamp
+                self.info["duration"] = duration
+                self.__loaded = self.__logical_frame
+
+                # Set tile
+                if self.fp and self._exclusive_fp:
+                    self.fp.close()
+                self.fp = BytesIO(data)
+                self.tile = [("raw", (0, 0) + self.size, 0, self.rawmode)]
+
+        return super().load()
+
+    def tell(self):
+        if not _webp.HAVE_WEBPANIM:
+            return super().tell()
+
+        return self.__logical_frame
+
+
+def _save_all(im, fp, filename):
+    encoderinfo = im.encoderinfo.copy()
+    append_images = list(encoderinfo.get("append_images", []))
+
+    # If total frame count is 1, then save using the legacy API, which
+    # will preserve non-alpha modes
+    total = 0
+    for ims in [im] + append_images:
+        total += getattr(ims, "n_frames", 1)
+    if total == 1:
+        _save(im, fp, filename)
+        return
+
+    background = (0, 0, 0, 0)
+    if "background" in encoderinfo:
+        background = encoderinfo["background"]
+    elif "background" in im.info:
+        background = im.info["background"]
+        if isinstance(background, int):
+            # GifImagePlugin stores a global color table index in
+            # info["background"]. So it must be converted to an RGBA value
+            palette = im.getpalette()
+            if palette:
+                r, g, b = palette[background * 3 : (background + 1) * 3]
+                background = (r, g, b, 255)
+            else:
+                background = (background, background, background, 255)
+
+    duration = im.encoderinfo.get("duration", im.info.get("duration", 0))
+    loop = im.encoderinfo.get("loop", 0)
+    minimize_size = im.encoderinfo.get("minimize_size", False)
+    kmin = im.encoderinfo.get("kmin", None)
+    kmax = im.encoderinfo.get("kmax", None)
+    allow_mixed = im.encoderinfo.get("allow_mixed", False)
+    verbose = False
+    lossless = im.encoderinfo.get("lossless", False)
+    quality = im.encoderinfo.get("quality", 80)
+    method = im.encoderinfo.get("method", 0)
+    icc_profile = im.encoderinfo.get("icc_profile") or ""
+    exif = im.encoderinfo.get("exif", "")
+    if isinstance(exif, Image.Exif):
+        exif = exif.tobytes()
+    xmp = im.encoderinfo.get("xmp", "")
+    if allow_mixed:
+        lossless = False
+
+    # Sensible keyframe defaults are from gif2webp.c script
+    if kmin is None:
+        kmin = 9 if lossless else 3
+    if kmax is None:
+        kmax = 17 if lossless else 5
+
+    # Validate background color
+    if (
+        not isinstance(background, (list, tuple))
+        or len(background) != 4
+        or not all(0 <= v < 256 for v in background)
+    ):
+        msg = f"Background color is not an RGBA tuple clamped to (0-255): {background}"
+        raise OSError(msg)
+
+    # Convert to packed uint
+    bg_r, bg_g, bg_b, bg_a = background
+    background = (bg_a << 24) | (bg_r << 16) | (bg_g << 8) | (bg_b << 0)
+
+    # Setup the WebP animation encoder
+    enc = _webp.WebPAnimEncoder(
+        im.size[0],
+        im.size[1],
+        background,
+        loop,
+        minimize_size,
+        kmin,
+        kmax,
+        allow_mixed,
+        verbose,
+    )
+
+    # Add each frame
+    frame_idx = 0
+    timestamp = 0
+    cur_idx = im.tell()
+    try:
+        for ims in [im] + append_images:
+            # Get # of frames in this image
+            nfr = getattr(ims, "n_frames", 1)
+
+            for idx in range(nfr):
+                ims.seek(idx)
+                ims.load()
+
+                # Make sure image mode is supported
+                frame = ims
+                rawmode = ims.mode
+                if ims.mode not in _VALID_WEBP_MODES:
+                    alpha = (
+                        "A" in ims.mode
+                        or "a" in ims.mode
+                        or (ims.mode == "P" and "A" in ims.im.getpalettemode())
+                    )
+                    rawmode = "RGBA" if alpha else "RGB"
+                    frame = ims.convert(rawmode)
+
+                if rawmode == "RGB":
+                    # For faster conversion, use RGBX
+                    rawmode = "RGBX"
+
+                # Append the frame to the animation encoder
+                enc.add(
+                    frame.tobytes("raw", rawmode),
+                    round(timestamp),
+                    frame.size[0],
+                    frame.size[1],
+                    rawmode,
+                    lossless,
+                    quality,
+                    method,
+                )
+
+                # Update timestamp and frame index
+                if isinstance(duration, (list, tuple)):
+                    timestamp += duration[frame_idx]
+                else:
+                    timestamp += duration
+                frame_idx += 1
+
+    finally:
+        im.seek(cur_idx)
+
+    # Force encoder to flush frames
+    enc.add(None, round(timestamp), 0, 0, "", lossless, quality, 0)
+
+    # Get the final output from the encoder
+    data = enc.assemble(icc_profile, exif, xmp)
+    if data is None:
+        msg = "cannot write file as WebP (encoder returned None)"
+        raise OSError(msg)
+
+    fp.write(data)
+
+
+def _save(im, fp, filename):
+    lossless = im.encoderinfo.get("lossless", False)
+    quality = im.encoderinfo.get("quality", 80)
+    icc_profile = im.encoderinfo.get("icc_profile") or ""
+    exif = im.encoderinfo.get("exif", b"")
+    if isinstance(exif, Image.Exif):
+        exif = exif.tobytes()
+    if exif.startswith(b"Exif\x00\x00"):
+        exif = exif[6:]
+    xmp = im.encoderinfo.get("xmp", "")
+    method = im.encoderinfo.get("method", 4)
+    exact = 1 if im.encoderinfo.get("exact") else 0
+
+    if im.mode not in _VALID_WEBP_LEGACY_MODES:
+        alpha = (
+            "A" in im.mode
+            or "a" in im.mode
+            or (im.mode == "P" and "transparency" in im.info)
+        )
+        im = im.convert("RGBA" if alpha else "RGB")
+
+    data = _webp.WebPEncode(
+        im.tobytes(),
+        im.size[0],
+        im.size[1],
+        lossless,
+        float(quality),
+        im.mode,
+        icc_profile,
+        method,
+        exact,
+        exif,
+        xmp,
+    )
+    if data is None:
+        msg = "cannot write file as WebP (encoder returned None)"
+        raise OSError(msg)
+
+    fp.write(data)
+
+
+Image.register_open(WebPImageFile.format, WebPImageFile, _accept)
+if SUPPORTED:
+    Image.register_save(WebPImageFile.format, _save)
+    if _webp.HAVE_WEBPANIM:
+        Image.register_save_all(WebPImageFile.format, _save_all)
+    Image.register_extension(WebPImageFile.format, ".webp")
+    Image.register_mime(WebPImageFile.format, "image/webp")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/WmfImagePlugin.py

@@ -0,0 +1,178 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# WMF stub codec
+#
+# history:
+# 1996-12-14 fl   Created
+# 2004-02-22 fl   Turned into a stub driver
+# 2004-02-23 fl   Added EMF support
+#
+# Copyright (c) Secret Labs AB 1997-2004.  All rights reserved.
+# Copyright (c) Fredrik Lundh 1996.
+#
+# See the README file for information on usage and redistribution.
+#
+# WMF/EMF reference documentation:
+# https://winprotocoldoc.blob.core.windows.net/productionwindowsarchives/MS-WMF/[MS-WMF].pdf
+# http://wvware.sourceforge.net/caolan/index.html
+# http://wvware.sourceforge.net/caolan/ora-wmf.html
+
+from . import Image, ImageFile
+from ._binary import i16le as word
+from ._binary import si16le as short
+from ._binary import si32le as _long
+
+_handler = None
+
+
+def register_handler(handler):
+    """
+    Install application-specific WMF image handler.
+
+    :param handler: Handler object.
+    """
+    global _handler
+    _handler = handler
+
+
+if hasattr(Image.core, "drawwmf"):
+    # install default handler (windows only)
+
+    class WmfHandler:
+        def open(self, im):
+            im.mode = "RGB"
+            self.bbox = im.info["wmf_bbox"]
+
+        def load(self, im):
+            im.fp.seek(0)  # rewind
+            return Image.frombytes(
+                "RGB",
+                im.size,
+                Image.core.drawwmf(im.fp.read(), im.size, self.bbox),
+                "raw",
+                "BGR",
+                (im.size[0] * 3 + 3) & -4,
+                -1,
+            )
+
+    register_handler(WmfHandler())
+
+#
+# --------------------------------------------------------------------
+# Read WMF file
+
+
+def _accept(prefix):
+    return (
+        prefix[:6] == b"\xd7\xcd\xc6\x9a\x00\x00" or prefix[:4] == b"\x01\x00\x00\x00"
+    )
+
+
+##
+# Image plugin for Windows metafiles.
+
+
+class WmfStubImageFile(ImageFile.StubImageFile):
+    format = "WMF"
+    format_description = "Windows Metafile"
+
+    def _open(self):
+        self._inch = None
+
+        # check placable header
+        s = self.fp.read(80)
+
+        if s[:6] == b"\xd7\xcd\xc6\x9a\x00\x00":
+            # placeable windows metafile
+
+            # get units per inch
+            self._inch = word(s, 14)
+
+            # get bounding box
+            x0 = short(s, 6)
+            y0 = short(s, 8)
+            x1 = short(s, 10)
+            y1 = short(s, 12)
+
+            # normalize size to 72 dots per inch
+            self.info["dpi"] = 72
+            size = (
+                (x1 - x0) * self.info["dpi"] // self._inch,
+                (y1 - y0) * self.info["dpi"] // self._inch,
+            )
+
+            self.info["wmf_bbox"] = x0, y0, x1, y1
+
+            # sanity check (standard metafile header)
+            if s[22:26] != b"\x01\x00\t\x00":
+                msg = "Unsupported WMF file format"
+                raise SyntaxError(msg)
+
+        elif s[:4] == b"\x01\x00\x00\x00" and s[40:44] == b" EMF":
+            # enhanced metafile
+
+            # get bounding box
+            x0 = _long(s, 8)
+            y0 = _long(s, 12)
+            x1 = _long(s, 16)
+            y1 = _long(s, 20)
+
+            # get frame (in 0.01 millimeter units)
+            frame = _long(s, 24), _long(s, 28), _long(s, 32), _long(s, 36)
+
+            size = x1 - x0, y1 - y0
+
+            # calculate dots per inch from bbox and frame
+            xdpi = 2540.0 * (x1 - y0) / (frame[2] - frame[0])
+            ydpi = 2540.0 * (y1 - y0) / (frame[3] - frame[1])
+
+            self.info["wmf_bbox"] = x0, y0, x1, y1
+
+            if xdpi == ydpi:
+                self.info["dpi"] = xdpi
+            else:
+                self.info["dpi"] = xdpi, ydpi
+
+        else:
+            msg = "Unsupported file format"
+            raise SyntaxError(msg)
+
+        self.mode = "RGB"
+        self._size = size
+
+        loader = self._load()
+        if loader:
+            loader.open(self)
+
+    def _load(self):
+        return _handler
+
+    def load(self, dpi=None):
+        if dpi is not None and self._inch is not None:
+            self.info["dpi"] = dpi
+            x0, y0, x1, y1 = self.info["wmf_bbox"]
+            self._size = (
+                (x1 - x0) * self.info["dpi"] // self._inch,
+                (y1 - y0) * self.info["dpi"] // self._inch,
+            )
+        return super().load()
+
+
+def _save(im, fp, filename):
+    if _handler is None or not hasattr(_handler, "save"):
+        msg = "WMF save handler not installed"
+        raise OSError(msg)
+    _handler.save(im, fp, filename)
+
+
+#
+# --------------------------------------------------------------------
+# Registry stuff
+
+
+Image.register_open(WmfStubImageFile.format, WmfStubImageFile, _accept)
+Image.register_save(WmfStubImageFile.format, _save)
+
+Image.register_extensions(WmfStubImageFile.format, [".wmf", ".emf"])

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/XVThumbImagePlugin.py

@@ -0,0 +1,78 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# XV Thumbnail file handler by Charles E. "Gene" Cash
+# (gcash@magicnet.net)
+#
+# see xvcolor.c and xvbrowse.c in the sources to John Bradley's XV,
+# available from ftp://ftp.cis.upenn.edu/pub/xv/
+#
+# history:
+# 98-08-15 cec  created (b/w only)
+# 98-12-09 cec  added color palette
+# 98-12-28 fl   added to PIL (with only a few very minor modifications)
+#
+# To do:
+# FIXME: make save work (this requires quantization support)
+#
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import o8
+
+_MAGIC = b"P7 332"
+
+# standard color palette for thumbnails (RGB332)
+PALETTE = b""
+for r in range(8):
+    for g in range(8):
+        for b in range(4):
+            PALETTE = PALETTE + (
+                o8((r * 255) // 7) + o8((g * 255) // 7) + o8((b * 255) // 3)
+            )
+
+
+def _accept(prefix):
+    return prefix[:6] == _MAGIC
+
+
+##
+# Image plugin for XV thumbnail images.
+
+
+class XVThumbImageFile(ImageFile.ImageFile):
+    format = "XVThumb"
+    format_description = "XV thumbnail image"
+
+    def _open(self):
+        # check magic
+        if not _accept(self.fp.read(6)):
+            msg = "not an XV thumbnail file"
+            raise SyntaxError(msg)
+
+        # Skip to beginning of next line
+        self.fp.readline()
+
+        # skip info comments
+        while True:
+            s = self.fp.readline()
+            if not s:
+                msg = "Unexpected EOF reading XV thumbnail file"
+                raise SyntaxError(msg)
+            if s[0] != 35:  # ie. when not a comment: '#'
+                break
+
+        # parse header line (already read)
+        s = s.strip().split()
+
+        self.mode = "P"
+        self._size = int(s[0]), int(s[1])
+
+        self.palette = ImagePalette.raw("RGB", PALETTE)
+
+        self.tile = [("raw", (0, 0) + self.size, self.fp.tell(), (self.mode, 0, 1))]
+
+
+# --------------------------------------------------------------------
+
+Image.register_open(XVThumbImageFile.format, XVThumbImageFile, _accept)

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/XbmImagePlugin.py

@@ -0,0 +1,94 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# XBM File handling
+#
+# History:
+# 1995-09-08 fl   Created
+# 1996-11-01 fl   Added save support
+# 1997-07-07 fl   Made header parser more tolerant
+# 1997-07-22 fl   Fixed yet another parser bug
+# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.4)
+# 2001-05-13 fl   Added hotspot handling (based on code from Bernhard Herzog)
+# 2004-02-24 fl   Allow some whitespace before first #define
+#
+# Copyright (c) 1997-2004 by Secret Labs AB
+# Copyright (c) 1996-1997 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import re
+
+from . import Image, ImageFile
+
+# XBM header
+xbm_head = re.compile(
+    rb"\s*#define[ \t]+.*_width[ \t]+(?P<width>[0-9]+)[\r\n]+"
+    b"#define[ \t]+.*_height[ \t]+(?P<height>[0-9]+)[\r\n]+"
+    b"(?P<hotspot>"
+    b"#define[ \t]+[^_]*_x_hot[ \t]+(?P<xhot>[0-9]+)[\r\n]+"
+    b"#define[ \t]+[^_]*_y_hot[ \t]+(?P<yhot>[0-9]+)[\r\n]+"
+    b")?"
+    rb"[\000-\377]*_bits\[]"
+)
+
+
+def _accept(prefix):
+    return prefix.lstrip()[:7] == b"#define"
+
+
+##
+# Image plugin for X11 bitmaps.
+
+
+class XbmImageFile(ImageFile.ImageFile):
+    format = "XBM"
+    format_description = "X11 Bitmap"
+
+    def _open(self):
+        m = xbm_head.match(self.fp.read(512))
+
+        if not m:
+            msg = "not a XBM file"
+            raise SyntaxError(msg)
+
+        xsize = int(m.group("width"))
+        ysize = int(m.group("height"))
+
+        if m.group("hotspot"):
+            self.info["hotspot"] = (int(m.group("xhot")), int(m.group("yhot")))
+
+        self.mode = "1"
+        self._size = xsize, ysize
+
+        self.tile = [("xbm", (0, 0) + self.size, m.end(), None)]
+
+
+def _save(im, fp, filename):
+    if im.mode != "1":
+        msg = f"cannot write mode {im.mode} as XBM"
+        raise OSError(msg)
+
+    fp.write(f"#define im_width {im.size[0]}\n".encode("ascii"))
+    fp.write(f"#define im_height {im.size[1]}\n".encode("ascii"))
+
+    hotspot = im.encoderinfo.get("hotspot")
+    if hotspot:
+        fp.write(f"#define im_x_hot {hotspot[0]}\n".encode("ascii"))
+        fp.write(f"#define im_y_hot {hotspot[1]}\n".encode("ascii"))
+
+    fp.write(b"static char im_bits[] = {\n")
+
+    ImageFile._save(im, fp, [("xbm", (0, 0) + im.size, 0, None)])
+
+    fp.write(b"};\n")
+
+
+Image.register_open(XbmImageFile.format, XbmImageFile, _accept)
+Image.register_save(XbmImageFile.format, _save)
+
+Image.register_extension(XbmImageFile.format, ".xbm")
+
+Image.register_mime(XbmImageFile.format, "image/xbm")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/XpmImagePlugin.py

@@ -0,0 +1,128 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# XPM File handling
+#
+# History:
+# 1996-12-29 fl   Created
+# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.7)
+#
+# Copyright (c) Secret Labs AB 1997-2001.
+# Copyright (c) Fredrik Lundh 1996-2001.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+import re
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import o8
+
+# XPM header
+xpm_head = re.compile(b'"([0-9]*) ([0-9]*) ([0-9]*) ([0-9]*)')
+
+
+def _accept(prefix):
+    return prefix[:9] == b"/* XPM */"
+
+
+##
+# Image plugin for X11 pixel maps.
+
+
+class XpmImageFile(ImageFile.ImageFile):
+    format = "XPM"
+    format_description = "X11 Pixel Map"
+
+    def _open(self):
+        if not _accept(self.fp.read(9)):
+            msg = "not an XPM file"
+            raise SyntaxError(msg)
+
+        # skip forward to next string
+        while True:
+            s = self.fp.readline()
+            if not s:
+                msg = "broken XPM file"
+                raise SyntaxError(msg)
+            m = xpm_head.match(s)
+            if m:
+                break
+
+        self._size = int(m.group(1)), int(m.group(2))
+
+        pal = int(m.group(3))
+        bpp = int(m.group(4))
+
+        if pal > 256 or bpp != 1:
+            msg = "cannot read this XPM file"
+            raise ValueError(msg)
+
+        #
+        # load palette description
+
+        palette = [b"\0\0\0"] * 256
+
+        for _ in range(pal):
+            s = self.fp.readline()
+            if s[-2:] == b"\r\n":
+                s = s[:-2]
+            elif s[-1:] in b"\r\n":
+                s = s[:-1]
+
+            c = s[1]
+            s = s[2:-2].split()
+
+            for i in range(0, len(s), 2):
+                if s[i] == b"c":
+                    # process colour key
+                    rgb = s[i + 1]
+                    if rgb == b"None":
+                        self.info["transparency"] = c
+                    elif rgb[:1] == b"#":
+                        # FIXME: handle colour names (see ImagePalette.py)
+                        rgb = int(rgb[1:], 16)
+                        palette[c] = (
+                            o8((rgb >> 16) & 255) + o8((rgb >> 8) & 255) + o8(rgb & 255)
+                        )
+                    else:
+                        # unknown colour
+                        msg = "cannot read this XPM file"
+                        raise ValueError(msg)
+                    break
+
+            else:
+                # missing colour key
+                msg = "cannot read this XPM file"
+                raise ValueError(msg)
+
+        self.mode = "P"
+        self.palette = ImagePalette.raw("RGB", b"".join(palette))
+
+        self.tile = [("raw", (0, 0) + self.size, self.fp.tell(), ("P", 0, 1))]
+
+    def load_read(self, bytes):
+        #
+        # load all image data in one chunk
+
+        xsize, ysize = self.size
+
+        s = [None] * ysize
+
+        for i in range(ysize):
+            s[i] = self.fp.readline()[1 : xsize + 1].ljust(xsize)
+
+        return b"".join(s)
+
+
+#
+# Registry
+
+
+Image.register_open(XpmImageFile.format, XpmImageFile, _accept)
+
+Image.register_extension(XpmImageFile.format, ".xpm")
+
+Image.register_mime(XpmImageFile.format, "image/xpm")

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/__init__.py

@@ -0,0 +1,84 @@
+"""Pillow (Fork of the Python Imaging Library)
+
+Pillow is the friendly PIL fork by Jeffrey A. Clark (Alex) and contributors.
+    https://github.com/python-pillow/Pillow/
+
+Pillow is forked from PIL 1.1.7.
+
+PIL is the Python Imaging Library by Fredrik Lundh and contributors.
+Copyright (c) 1999 by Secret Labs AB.
+
+Use PIL.__version__ for this Pillow version.
+
+;-)
+"""
+
+from . import _version
+
+# VERSION was removed in Pillow 6.0.0.
+# PILLOW_VERSION was removed in Pillow 9.0.0.
+# Use __version__ instead.
+__version__ = _version.__version__
+del _version
+
+
+_plugins = [
+    "BlpImagePlugin",
+    "BmpImagePlugin",
+    "BufrStubImagePlugin",
+    "CurImagePlugin",
+    "DcxImagePlugin",
+    "DdsImagePlugin",
+    "EpsImagePlugin",
+    "FitsImagePlugin",
+    "FliImagePlugin",
+    "FpxImagePlugin",
+    "FtexImagePlugin",
+    "GbrImagePlugin",
+    "GifImagePlugin",
+    "GribStubImagePlugin",
+    "Hdf5StubImagePlugin",
+    "IcnsImagePlugin",
+    "IcoImagePlugin",
+    "ImImagePlugin",
+    "ImtImagePlugin",
+    "IptcImagePlugin",
+    "JpegImagePlugin",
+    "Jpeg2KImagePlugin",
+    "McIdasImagePlugin",
+    "MicImagePlugin",
+    "MpegImagePlugin",
+    "MpoImagePlugin",
+    "MspImagePlugin",
+    "PalmImagePlugin",
+    "PcdImagePlugin",
+    "PcxImagePlugin",
+    "PdfImagePlugin",
+    "PixarImagePlugin",
+    "PngImagePlugin",
+    "PpmImagePlugin",
+    "PsdImagePlugin",
+    "QoiImagePlugin",
+    "SgiImagePlugin",
+    "SpiderImagePlugin",
+    "SunImagePlugin",
+    "TgaImagePlugin",
+    "TiffImagePlugin",
+    "WebPImagePlugin",
+    "WmfImagePlugin",
+    "XbmImagePlugin",
+    "XpmImagePlugin",
+    "XVThumbImagePlugin",
+]
+
+
+class UnidentifiedImageError(OSError):
+    """
+    Raised in :py:meth:`PIL.Image.open` if an image cannot be opened and identified.
+
+    If a PNG image raises this error, setting :data:`.ImageFile.LOAD_TRUNCATED_IMAGES`
+    to true may allow the image to be opened after all. The setting will ignore missing
+    data and checksum failures.
+    """
+
+    pass

Follow_the_line/Programs /.venv/lib/python3.10/site-packages/PIL/__main__.py

@@ -0,0 +1,3 @@
+from .features import pilinfo
+
+pilinfo()