first coimmit

django/bin/activate

@@ -0,0 +1,84 @@
+# This file must be used with "source bin/activate" *from bash*
+# you cannot run it directly
+
+
+if [ "${BASH_SOURCE-}" = "$0" ]; then
+    echo "You must source this script: \$ source $0" >&2
+    exit 33
+fi
+
+deactivate () {
+    unset -f pydoc >/dev/null 2>&1
+
+    # reset old environment variables
+    # ! [ -z ${VAR+_} ] returns true if VAR is declared at all
+    if ! [ -z "${_OLD_VIRTUAL_PATH:+_}" ] ; then
+        PATH="$_OLD_VIRTUAL_PATH"
+        export PATH
+        unset _OLD_VIRTUAL_PATH
+    fi
+    if ! [ -z "${_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-}" ] || [ -n "${ZSH_VERSION-}" ] ; then
+        hash -r 2>/dev/null
+    fi
+
+    if ! [ -z "${_OLD_VIRTUAL_PS1+_}" ] ; then
+        PS1="$_OLD_VIRTUAL_PS1"
+        export PS1
+        unset _OLD_VIRTUAL_PS1
+    fi
+
+    unset VIRTUAL_ENV
+    if [ ! "${1-}" = "nondestructive" ] ; then
+    # Self destruct!
+        unset -f deactivate
+    fi
+}
+
+# unset irrelevant variables
+deactivate nondestructive
+
+VIRTUAL_ENV='/Users/karolidaszak/Desktop/IT/django'
+export VIRTUAL_ENV
+
+_OLD_VIRTUAL_PATH="$PATH"
+PATH="$VIRTUAL_ENV/bin:$PATH"
+export PATH
+
+# unset PYTHONHOME if set
+if ! [ -z "${PYTHONHOME+_}" ] ; then
+    _OLD_VIRTUAL_PYTHONHOME="$PYTHONHOME"
+    unset PYTHONHOME
+fi
+
+if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT-}" ] ; then
+    _OLD_VIRTUAL_PS1="${PS1-}"
+    if [ "x" != x ] ; then
+        PS1="${PS1-}"
+    else
+        PS1="(`basename \"$VIRTUAL_ENV\"`) ${PS1-}"
+    fi
+    export PS1
+fi
+
+# Make sure to unalias pydoc if it's already there
+alias pydoc 2>/dev/null >/dev/null && unalias pydoc || true
+
+pydoc () {
+    python -m pydoc "$@"
+}
+
+# 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-}" ] || [ -n "${ZSH_VERSION-}" ] ; then
+    hash -r 2>/dev/null
+fi

django/bin/activate.csh

@@ -0,0 +1,55 @@
+# 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>.
+
+set newline='\
+'
+
+alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PATH:q" && unset _OLD_VIRTUAL_PATH; rehash; test $?_OLD_VIRTUAL_PROMPT != 0 && set prompt="$_OLD_VIRTUAL_PROMPT:q" && unset _OLD_VIRTUAL_PROMPT; unsetenv VIRTUAL_ENV; test "\!:*" != "nondestructive" && unalias deactivate && unalias pydoc'
+
+# Unset irrelevant variables.
+deactivate nondestructive
+
+setenv VIRTUAL_ENV '/Users/karolidaszak/Desktop/IT/django'
+
+set _OLD_VIRTUAL_PATH="$PATH:q"
+setenv PATH "$VIRTUAL_ENV:q/bin:$PATH:q"
+
+
+
+if ('' != "") then
+    set env_name = ''
+else
+    set env_name = '('"$VIRTUAL_ENV:t:q"') '
+endif
+
+if ( $?VIRTUAL_ENV_DISABLE_PROMPT ) then
+    if ( $VIRTUAL_ENV_DISABLE_PROMPT == "" ) then
+        set do_prompt = "1"
+    else
+        set do_prompt = "0"
+    endif
+else
+    set do_prompt = "1"
+endif
+
+if ( $do_prompt == "1" ) then
+    # Could be in a non-interactive environment,
+    # in which case, $prompt is undefined and we wouldn't
+    # care about the prompt anyway.
+    if ( $?prompt ) then
+        set _OLD_VIRTUAL_PROMPT="$prompt:q"
+        if ( "$prompt:q" =~ *"$newline:q"* ) then
+            :
+        else
+            set prompt = "$env_name:q$prompt:q"
+        endif
+    endif
+endif
+
+unset env_name
+unset do_prompt
+
+alias pydoc python -m pydoc
+
+rehash

django/bin/activate.fish

@@ -0,0 +1,100 @@
+# This file must be used using `source bin/activate.fish` *within a running fish ( http://fishshell.com ) session*.
+# Do not run it directly.
+
+function _bashify_path -d "Converts a fish path to something bash can recognize"
+    set fishy_path $argv
+    set bashy_path $fishy_path[1]
+    for path_part in $fishy_path[2..-1]
+        set bashy_path "$bashy_path:$path_part"
+    end
+    echo $bashy_path
+end
+
+function _fishify_path -d "Converts a bash path to something fish can recognize"
+    echo $argv | tr ':' '\n'
+end
+
+function deactivate -d 'Exit virtualenv mode and return to the normal environment.'
+    # reset old environment variables
+    if test -n "$_OLD_VIRTUAL_PATH"
+        # https://github.com/fish-shell/fish-shell/issues/436 altered PATH handling
+        if test (echo $FISH_VERSION | head -c 1) -lt 3
+            set -gx PATH (_fishify_path "$_OLD_VIRTUAL_PATH")
+        else
+            set -gx PATH "$_OLD_VIRTUAL_PATH"
+        end
+        set -e _OLD_VIRTUAL_PATH
+    end
+
+    if test -n "$_OLD_VIRTUAL_PYTHONHOME"
+        set -gx PYTHONHOME "$_OLD_VIRTUAL_PYTHONHOME"
+        set -e _OLD_VIRTUAL_PYTHONHOME
+    end
+
+    if test -n "$_OLD_FISH_PROMPT_OVERRIDE"
+       and functions -q _old_fish_prompt
+        # Set an empty local `$fish_function_path` to allow the removal of `fish_prompt` using `functions -e`.
+        set -l fish_function_path
+
+        # Erase virtualenv's `fish_prompt` and restore the original.
+        functions -e fish_prompt
+        functions -c _old_fish_prompt fish_prompt
+        functions -e _old_fish_prompt
+        set -e _OLD_FISH_PROMPT_OVERRIDE
+    end
+
+    set -e VIRTUAL_ENV
+
+    if test "$argv[1]" != 'nondestructive'
+        # Self-destruct!
+        functions -e pydoc
+        functions -e deactivate
+        functions -e _bashify_path
+        functions -e _fishify_path
+    end
+end
+
+# Unset irrelevant variables.
+deactivate nondestructive
+
+set -gx VIRTUAL_ENV '/Users/karolidaszak/Desktop/IT/django'
+
+# https://github.com/fish-shell/fish-shell/issues/436 altered PATH handling
+if test (echo $FISH_VERSION | head -c 1) -lt 3
+   set -gx _OLD_VIRTUAL_PATH (_bashify_path $PATH)
+else
+    set -gx _OLD_VIRTUAL_PATH "$PATH"
+end
+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
+
+function pydoc
+    python -m pydoc $argv
+end
+
+if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
+    # Copy the current `fish_prompt` function as `_old_fish_prompt`.
+    functions -c fish_prompt _old_fish_prompt
+
+    function fish_prompt
+        # Run the user's prompt first; it might depend on (pipe)status.
+        set -l prompt (_old_fish_prompt)
+
+        # Prompt override provided?
+        # If not, just prepend the environment name.
+        if test -n ''
+            printf '%s%s' '' (set_color normal)
+        else
+            printf '%s(%s) ' (set_color normal) (basename "$VIRTUAL_ENV")
+        end
+
+        string join -- \n $prompt # handle multi-line prompts
+    end
+
+    set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
+end

django/bin/activate.ps1

@@ -0,0 +1,60 @@
+$script:THIS_PATH = $myinvocation.mycommand.path
+$script:BASE_DIR = Split-Path (Resolve-Path "$THIS_PATH/..") -Parent
+
+function global:deactivate([switch] $NonDestructive) {
+    if (Test-Path variable:_OLD_VIRTUAL_PATH) {
+        $env:PATH = $variable:_OLD_VIRTUAL_PATH
+        Remove-Variable "_OLD_VIRTUAL_PATH" -Scope global
+    }
+
+    if (Test-Path function:_old_virtual_prompt) {
+        $function:prompt = $function:_old_virtual_prompt
+        Remove-Item function:\_old_virtual_prompt
+    }
+
+    if ($env:VIRTUAL_ENV) {
+        Remove-Item env:VIRTUAL_ENV -ErrorAction SilentlyContinue
+    }
+
+    if (!$NonDestructive) {
+        # Self destruct!
+        Remove-Item function:deactivate
+        Remove-Item function:pydoc
+    }
+}
+
+function global:pydoc {
+    python -m pydoc $args
+}
+
+# unset irrelevant variables
+deactivate -nondestructive
+
+$VIRTUAL_ENV = $BASE_DIR
+$env:VIRTUAL_ENV = $VIRTUAL_ENV
+
+New-Variable -Scope global -Name _OLD_VIRTUAL_PATH -Value $env:PATH
+
+$env:PATH = "$env:VIRTUAL_ENV/bin:" + $env:PATH
+if (!$env:VIRTUAL_ENV_DISABLE_PROMPT) {
+    function global:_old_virtual_prompt {
+        ""
+    }
+    $function:_old_virtual_prompt = $function:prompt
+
+    if ("" -ne "") {
+        function global:prompt {
+            # Add the custom prefix to the existing prompt
+            $previous_prompt_value = & $function:_old_virtual_prompt
+            ("" + $previous_prompt_value)
+        }
+    }
+    else {
+        function global:prompt {
+            # Add a prefix to the current prompt, but don't discard it.
+            $previous_prompt_value = & $function:_old_virtual_prompt
+            $new_prompt_value = "($( Split-Path $env:VIRTUAL_ENV -Leaf )) "
+            ($new_prompt_value + $previous_prompt_value)
+        }
+    }
+}

django/bin/activate.xsh

@@ -0,0 +1,46 @@
+"""Xonsh activate script for virtualenv"""
+from xonsh.tools import get_sep as _get_sep
+
+def _deactivate(args):
+    if "pydoc" in aliases:
+        del aliases["pydoc"]
+
+    if ${...}.get("_OLD_VIRTUAL_PATH", ""):
+        $PATH = $_OLD_VIRTUAL_PATH
+        del $_OLD_VIRTUAL_PATH
+
+    if ${...}.get("_OLD_VIRTUAL_PYTHONHOME", ""):
+        $PYTHONHOME = $_OLD_VIRTUAL_PYTHONHOME
+        del $_OLD_VIRTUAL_PYTHONHOME
+
+    if "VIRTUAL_ENV" in ${...}:
+        del $VIRTUAL_ENV
+
+    if "VIRTUAL_ENV_PROMPT" in ${...}:
+        del $VIRTUAL_ENV_PROMPT
+
+    if "nondestructive" not in args:
+        # Self destruct!
+        del aliases["deactivate"]
+
+
+# unset irrelevant variables
+_deactivate(["nondestructive"])
+aliases["deactivate"] = _deactivate
+
+$VIRTUAL_ENV = r"/Users/karolidaszak/Desktop/IT/django"
+
+$_OLD_VIRTUAL_PATH = $PATH
+$PATH = $PATH[:]
+$PATH.add($VIRTUAL_ENV + _get_sep() + "bin", front=True, replace=True)
+
+if ${...}.get("PYTHONHOME", ""):
+    # unset PYTHONHOME if set
+    $_OLD_VIRTUAL_PYTHONHOME = $PYTHONHOME
+    del $PYTHONHOME
+
+$VIRTUAL_ENV_PROMPT = ""
+if not $VIRTUAL_ENV_PROMPT:
+    del $VIRTUAL_ENV_PROMPT
+
+aliases["pydoc"] = ["python", "-m", "pydoc"]

django/bin/activate_this.py

@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+"""Activate virtualenv for current interpreter:
+
+Use exec(open(this_file).read(), {'__file__': this_file}).
+
+This can be used when you must use an existing Python interpreter, not the virtualenv bin/python.
+"""
+import os
+import site
+import sys
+
+try:
+    abs_file = os.path.abspath(__file__)
+except NameError:
+    raise AssertionError("You must use exec(open(this_file).read(), {'__file__': this_file}))")
+
+bin_dir = os.path.dirname(abs_file)
+base = bin_dir[: -len("bin") - 1]  # strip away the bin part from the __file__, plus the path separator
+
+# prepend bin to PATH (this file is inside the bin directory)
+os.environ["PATH"] = os.pathsep.join([bin_dir] + os.environ.get("PATH", "").split(os.pathsep))
+os.environ["VIRTUAL_ENV"] = base  # virtual env is right above bin directory
+
+# add the virtual environments libraries to the host python import mechanism
+prev_length = len(sys.path)
+for lib in "../lib/python3.6/site-packages".split(os.pathsep):
+    path = os.path.realpath(os.path.join(bin_dir, lib))
+    site.addsitedir(path.decode("utf-8") if "" else path)
+sys.path[:] = sys.path[prev_length:] + sys.path[0:prev_length]
+
+sys.real_prefix = sys.prefix
+sys.prefix = base

django/bin/django-admin

@@ -0,0 +1,8 @@
+#!/Users/karolidaszak/Desktop/IT/django/bin/python
+# -*- coding: utf-8 -*-
+import re
+import sys
+from django.core.management import execute_from_command_line
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(execute_from_command_line())

django/bin/django-admin.py

@@ -0,0 +1,5 @@
+#!/Users/karolidaszak/Desktop/IT/django/bin/python
+from django.core import management
+
+if __name__ == "__main__":
+    management.execute_from_command_line()

django/bin/easy_install

@@ -0,0 +1,8 @@
+#!/Users/karolidaszak/Desktop/IT/django/bin/python
+# -*- coding: utf-8 -*-
+import re
+import sys
+from setuptools.command.easy_install import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

django/bin/easy_install-3.6

@@ -0,0 +1,8 @@
+#!/Users/karolidaszak/Desktop/IT/django/bin/python
+# -*- coding: utf-8 -*-
+import re
+import sys
+from setuptools.command.easy_install import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

django/bin/easy_install3

@@ -0,0 +1,8 @@
+#!/Users/karolidaszak/Desktop/IT/django/bin/python
+# -*- coding: utf-8 -*-
+import re
+import sys
+from setuptools.command.easy_install import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

django/bin/pip

@@ -0,0 +1,8 @@
+#!/Users/karolidaszak/Desktop/IT/django/bin/python
+# -*- 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())

django/bin/pip-3.6

@@ -0,0 +1,8 @@
+#!/Users/karolidaszak/Desktop/IT/django/bin/python
+# -*- 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())

django/bin/pip3

@@ -0,0 +1,8 @@
+#!/Users/karolidaszak/Desktop/IT/django/bin/python
+# -*- 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())

django/bin/python

@@ -0,0 +1 @@
+/Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6

django/bin/python3

@@ -0,0 +1 @@
+python

django/bin/python3.6

@@ -0,0 +1 @@
+python

django/bin/wheel

@@ -0,0 +1,8 @@
+#!/Users/karolidaszak/Desktop/IT/django/bin/python
+# -*- coding: utf-8 -*-
+import re
+import sys
+from wheel.cli import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

django/bin/wheel-3.6

@@ -0,0 +1,8 @@
+#!/Users/karolidaszak/Desktop/IT/django/bin/python
+# -*- coding: utf-8 -*-
+import re
+import sys
+from wheel.cli import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

django/bin/wheel3

@@ -0,0 +1,8 @@
+#!/Users/karolidaszak/Desktop/IT/django/bin/python
+# -*- coding: utf-8 -*-
+import re
+import sys
+from wheel.cli import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())

django/lib/python3.6/site-packages/Django-1.11.8.dist-info/DESCRIPTION.rst

@@ -0,0 +1,3 @@
+UNKNOWN
+
+

django/lib/python3.6/site-packages/Django-1.11.8.dist-info/INSTALLER

@@ -0,0 +1 @@
+pip

django/lib/python3.6/site-packages/Django-1.11.8.dist-info/LICENSE.txt

@@ -0,0 +1,27 @@
+Copyright (c) Django Software Foundation and individual contributors.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+    3. Neither the name of Django nor the names of its contributors may be used
+       to endorse or promote products derived from this software without
+       specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

django/lib/python3.6/site-packages/Django-1.11.8.dist-info/METADATA

@@ -0,0 +1,37 @@
+Metadata-Version: 2.0
+Name: Django
+Version: 1.11.8
+Summary: A high-level Python Web framework that encourages rapid development and clean, pragmatic design.
+Home-page: https://www.djangoproject.com/
+Author: Django Software Foundation
+Author-email: foundation@djangoproject.com
+License: BSD
+Description-Content-Type: UNKNOWN
+Platform: UNKNOWN
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Environment :: Web Environment
+Classifier: Framework :: Django
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: BSD License
+Classifier: Operating System :: OS Independent
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 2
+Classifier: Programming Language :: Python :: 2.7
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.4
+Classifier: Programming Language :: Python :: 3.5
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Topic :: Internet :: WWW/HTTP
+Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
+Classifier: Topic :: Internet :: WWW/HTTP :: WSGI
+Classifier: Topic :: Software Development :: Libraries :: Application Frameworks
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
+Requires-Dist: pytz
+Provides-Extra: argon2
+Requires-Dist: argon2-cffi (>=16.1.0); extra == 'argon2'
+Provides-Extra: bcrypt
+Requires-Dist: bcrypt; extra == 'bcrypt'
+
+UNKNOWN
+
+

django/lib/python3.6/site-packages/Django-1.11.8.dist-info/WHEEL

@@ -0,0 +1,6 @@
+Wheel-Version: 1.0
+Generator: bdist_wheel (0.30.0)
+Root-Is-Purelib: true
+Tag: py2-none-any
+Tag: py3-none-any
+

django/lib/python3.6/site-packages/Django-1.11.8.dist-info/entry_points.txt

@@ -0,0 +1,3 @@
+[console_scripts]
+django-admin = django.core.management:execute_from_command_line
+

django/lib/python3.6/site-packages/Django-1.11.8.dist-info/metadata.json

@@ -0,0 +1 @@
+{"classifiers": ["Development Status :: 5 - Production/Stable", "Environment :: Web Environment", "Framework :: Django", "Intended Audience :: Developers", "License :: OSI Approved :: BSD License", "Operating System :: OS Independent", "Programming Language :: Python", "Programming Language :: Python :: 2", "Programming Language :: Python :: 2.7", "Programming Language :: Python :: 3", "Programming Language :: Python :: 3.4", "Programming Language :: Python :: 3.5", "Programming Language :: Python :: 3.6", "Topic :: Internet :: WWW/HTTP", "Topic :: Internet :: WWW/HTTP :: Dynamic Content", "Topic :: Internet :: WWW/HTTP :: WSGI", "Topic :: Software Development :: Libraries :: Application Frameworks", "Topic :: Software Development :: Libraries :: Python Modules"], "description_content_type": "UNKNOWN", "extensions": {"python.commands": {"wrap_console": {"django-admin": "django.core.management:execute_from_command_line"}}, "python.details": {"contacts": [{"email": "foundation@djangoproject.com", "name": "Django Software Foundation", "role": "author"}], "document_names": {"description": "DESCRIPTION.rst", "license": "LICENSE.txt"}, "project_urls": {"Home": "https://www.djangoproject.com/"}}, "python.exports": {"console_scripts": {"django-admin": "django.core.management:execute_from_command_line"}}}, "extras": ["argon2", "bcrypt"], "generator": "bdist_wheel (0.30.0)", "license": "BSD", "metadata_version": "2.0", "name": "Django", "run_requires": [{"extra": "argon2", "requires": ["argon2-cffi (>=16.1.0)"]}, {"extra": "bcrypt", "requires": ["bcrypt"]}, {"requires": ["pytz"]}], "summary": "A high-level Python Web framework that encourages rapid development and clean, pragmatic design.", "version": "1.11.8"}

django/lib/python3.6/site-packages/Django-1.11.8.dist-info/top_level.txt

@@ -0,0 +1 @@
+django

django/lib/python3.6/site-packages/PIL/BdfFontFile.py

@@ -0,0 +1,110 @@
+#
+# 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)
+
+    [x, y, l, d] = [int(p) for p in props["BBX"].split()]
+    [dx, dy] = [int(p) for p in props["DWIDTH"].split()]
+
+    bbox = (dx, dy), (l, -d - y, x + l, -d), (0, 0, x, y)
+
+    try:
+        im = Image.frombytes("1", (x, y), bitmap, "hex", "1")
+    except ValueError:
+        # deal with zero-width characters
+        im = Image.new("1", (x, y))
+
+    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":
+            raise SyntaxError("not a valid BDF file")
+
+        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

django/lib/python3.6/site-packages/PIL/BlpImagePlugin.py

@@ -0,0 +1,420 @@
+"""
+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 struct
+from io import BytesIO
+
+from . import Image, ImageFile
+
+BLP_FORMAT_JPEG = 0
+
+BLP_ENCODING_UNCOMPRESSED = 1
+BLP_ENCODING_DXT = 2
+BLP_ENCODING_UNCOMPRESSED_RAW_BGRA = 3
+
+BLP_ALPHA_ENCODING_DXT1 = 0
+BLP_ALPHA_ENCODING_DXT3 = 1
+BLP_ALPHA_ENCODING_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
+
+
+class BlpImageFile(ImageFile.ImageFile):
+    """
+    Blizzard Mipmap Format
+    """
+
+    format = "BLP"
+    format_description = "Blizzard Mipmap Format"
+
+    def _open(self):
+        self.magic = self.fp.read(4)
+        self._read_blp_header()
+
+        if self.magic == b"BLP1":
+            decoder = "BLP1"
+            self.mode = "RGB"
+        elif self.magic == b"BLP2":
+            decoder = "BLP2"
+            self.mode = "RGBA" if self._blp_alpha_depth else "RGB"
+        else:
+            raise BLPFormatError("Bad BLP magic %r" % (self.magic))
+
+        self.tile = [(decoder, (0, 0) + self.size, 0, (self.mode, 0, 1))]
+
+    def _read_blp_header(self):
+        (self._blp_compression,) = struct.unpack("<i", self.fp.read(4))
+
+        (self._blp_encoding,) = struct.unpack("<b", self.fp.read(1))
+        (self._blp_alpha_depth,) = struct.unpack("<b", self.fp.read(1))
+        (self._blp_alpha_encoding,) = struct.unpack("<b", self.fp.read(1))
+        (self._blp_mips,) = struct.unpack("<b", self.fp.read(1))
+
+        self._size = struct.unpack("<II", self.fp.read(8))
+
+        if self.magic == b"BLP1":
+            # Only present for BLP1
+            (self._blp_encoding,) = struct.unpack("<i", self.fp.read(4))
+            (self._blp_subtype,) = struct.unpack("<i", self.fp.read(4))
+
+        self._blp_offsets = struct.unpack("<16I", self.fp.read(16 * 4))
+        self._blp_lengths = struct.unpack("<16I", self.fp.read(16 * 4))
+
+
+class _BLPBaseDecoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def decode(self, buffer):
+        try:
+            self.fd.seek(0)
+            self.magic = self.fd.read(4)
+            self._read_blp_header()
+            self._load()
+        except struct.error as e:
+            raise OSError("Truncated Blp file") from e
+        return 0, 0
+
+    def _read_palette(self):
+        ret = []
+        for i in range(256):
+            try:
+                b, g, r, a = struct.unpack("<4B", self.fd.read(4))
+            except struct.error:
+                break
+            ret.append((b, g, r, a))
+        return ret
+
+    def _read_blp_header(self):
+        (self._blp_compression,) = struct.unpack("<i", self.fd.read(4))
+
+        (self._blp_encoding,) = struct.unpack("<b", self.fd.read(1))
+        (self._blp_alpha_depth,) = struct.unpack("<b", self.fd.read(1))
+        (self._blp_alpha_encoding,) = struct.unpack("<b", self.fd.read(1))
+        (self._blp_mips,) = struct.unpack("<b", self.fd.read(1))
+
+        self.size = struct.unpack("<II", self.fd.read(8))
+
+        if self.magic == b"BLP1":
+            # Only present for BLP1
+            (self._blp_encoding,) = struct.unpack("<i", self.fd.read(4))
+            (self._blp_subtype,) = struct.unpack("<i", self.fd.read(4))
+
+        self._blp_offsets = struct.unpack("<16I", self.fd.read(16 * 4))
+        self._blp_lengths = struct.unpack("<16I", self.fd.read(16 * 4))
+
+
+class BLP1Decoder(_BLPBaseDecoder):
+    def _load(self):
+        if self._blp_compression == BLP_FORMAT_JPEG:
+            self._decode_jpeg_stream()
+
+        elif self._blp_compression == 1:
+            if self._blp_encoding in (4, 5):
+                data = bytearray()
+                palette = self._read_palette()
+                _data = BytesIO(self.fd.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]
+                    data.extend([r, g, b])
+
+                self.set_as_raw(bytes(data))
+            else:
+                raise BLPFormatError(
+                    "Unsupported BLP encoding %r" % (self._blp_encoding)
+                )
+        else:
+            raise BLPFormatError(
+                "Unsupported BLP compression %r" % (self._blp_encoding)
+            )
+
+    def _decode_jpeg_stream(self):
+        from PIL.JpegImagePlugin import JpegImageFile
+
+        (jpeg_header_size,) = struct.unpack("<I", self.fd.read(4))
+        jpeg_header = self.fd.read(jpeg_header_size)
+        self.fd.read(self._blp_offsets[0] - self.fd.tell())  # What IS this?
+        data = self.fd.read(self._blp_lengths[0])
+        data = jpeg_header + data
+        data = BytesIO(data)
+        image = JpegImageFile(data)
+        self.tile = image.tile  # :/
+        self.fd = image.fp
+        self.mode = image.mode
+
+
+class BLP2Decoder(_BLPBaseDecoder):
+    def _load(self):
+        palette = self._read_palette()
+
+        data = bytearray()
+        self.fd.seek(self._blp_offsets[0])
+
+        if self._blp_compression == 1:
+            # Uncompressed or DirectX compression
+
+            if self._blp_encoding == BLP_ENCODING_UNCOMPRESSED:
+                _data = BytesIO(self.fd.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]
+                    data.extend((r, g, b))
+
+            elif self._blp_encoding == BLP_ENCODING_DXT:
+                if self._blp_alpha_encoding == BLP_ALPHA_ENCODING_DXT1:
+                    linesize = (self.size[0] + 3) // 4 * 8
+                    for yb in range((self.size[1] + 3) // 4):
+                        for d in decode_dxt1(
+                            self.fd.read(linesize), alpha=bool(self._blp_alpha_depth)
+                        ):
+                            data += d
+
+                elif self._blp_alpha_encoding == BLP_ALPHA_ENCODING_DXT3:
+                    linesize = (self.size[0] + 3) // 4 * 16
+                    for yb in range((self.size[1] + 3) // 4):
+                        for d in decode_dxt3(self.fd.read(linesize)):
+                            data += d
+
+                elif self._blp_alpha_encoding == BLP_ALPHA_ENCODING_DXT5:
+                    linesize = (self.size[0] + 3) // 4 * 16
+                    for yb in range((self.size[1] + 3) // 4):
+                        for d in decode_dxt5(self.fd.read(linesize)):
+                            data += d
+                else:
+                    raise BLPFormatError(
+                        "Unsupported alpha encoding %r" % (self._blp_alpha_encoding)
+                    )
+            else:
+                raise BLPFormatError("Unknown BLP encoding %r" % (self._blp_encoding))
+
+        else:
+            raise BLPFormatError("Unknown BLP compression %r" % (self._blp_compression))
+
+        self.set_as_raw(bytes(data))
+
+
+Image.register_open(
+    BlpImageFile.format, BlpImageFile, lambda p: p[:4] in (b"BLP1", b"BLP2")
+)
+Image.register_extension(BlpImageFile.format, ".blp")
+
+Image.register_decoder("BLP1", BLP1Decoder)
+Image.register_decoder("BLP2", BLP2Decoder)

django/lib/python3.6/site-packages/PIL/BmpImagePlugin.py

@@ -0,0 +1,380 @@
+#
+# 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.
+#
+
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import i8, i16le as i16, i32le as i32, o8, o16le as o16, 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[:4]) 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)
+        file_info = {}
+        # read bmp header size @offset 14 (this is part of the header size)
+        file_info["header_size"] = i32(read(4))
+        file_info["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[0:2])
+            file_info["height"] = i16(header_data[2:4])
+            file_info["planes"] = i16(header_data[4:6])
+            file_info["bits"] = i16(header_data[6:8])
+            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"] = i8(header_data[7]) == 0xFF
+            file_info["direction"] = 1 if file_info["y_flip"] else -1
+            file_info["width"] = i32(header_data[0:4])
+            file_info["height"] = (
+                i32(header_data[4:8])
+                if not file_info["y_flip"]
+                else 2 ** 32 - i32(header_data[4:8])
+            )
+            file_info["planes"] = i16(header_data[8:10])
+            file_info["bits"] = i16(header_data[10:12])
+            file_info["compression"] = i32(header_data[12:16])
+            # byte size of pixel data
+            file_info["data_size"] = i32(header_data[16:20])
+            file_info["pixels_per_meter"] = (
+                i32(header_data[20:24]),
+                i32(header_data[24:28]),
+            )
+            file_info["colors"] = i32(header_data[28:32])
+            file_info["palette_padding"] = 4
+            self.info["dpi"] = tuple(
+                int(x / 39.3701 + 0.5) 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 : 40 + 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:
+            raise OSError("Unsupported BMP header type (%d)" % file_info["header_size"])
+
+        # ------------------ 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"])
+        )
+
+        # ------------------------------- Check abnormal values for DOS attacks
+        if file_info["width"] * file_info["height"] > 2 ** 31:
+            raise OSError("Unsupported BMP Size: (%dx%d)" % self.size)
+
+        # ---------------------- Check bit depth for unusual unsupported values
+        self.mode, raw_mode = BIT2MODE.get(file_info["bits"], (None, None))
+        if self.mode is None:
+            raise OSError("Unsupported BMP pixel depth (%d)" % file_info["bits"])
+
+        # ---------------- Process BMP with Bitfields compression (not palette)
+        if file_info["compression"] == self.BITFIELDS:
+            SUPPORTED = {
+                32: [
+                    (0xFF0000, 0xFF00, 0xFF, 0x0),
+                    (0xFF0000, 0xFF00, 0xFF, 0xFF000000),
+                    (0xFF, 0xFF00, 0xFF0000, 0xFF000000),
+                    (0x0, 0x0, 0x0, 0x0),
+                    (0xFF000000, 0xFF0000, 0xFF00, 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, (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:
+                    raise OSError("Unsupported BMP bitfields layout")
+            else:
+                raise OSError("Unsupported BMP bitfields layout")
+        elif file_info["compression"] == self.RAW:
+            if file_info["bits"] == 32 and header == 22:  # 32-bit .cur offset
+                raw_mode, self.mode = "BGRA", "RGBA"
+        else:
+            raise OSError("Unsupported BMP compression (%d)" % file_info["compression"])
+
+        # --------------- 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):
+                raise OSError("Unsupported BMP Palette size (%d)" % file_info["colors"])
+            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"]
+        self.tile = [
+            (
+                "raw",
+                (0, 0, file_info["width"], file_info["height"]),
+                offset or self.fp.tell(),
+                (
+                    raw_mode,
+                    ((file_info["width"] * file_info["bits"] + 31) >> 3) & (~3),
+                    file_info["direction"],
+                ),
+            )
+        ]
+
+    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):
+            raise SyntaxError("Not a BMP file")
+        # read the start position of the BMP image data (u32)
+        offset = i32(head_data[10:14])
+        # load bitmap information (offset=raster info)
+        self._bitmap(offset=offset)
+
+
+# =============================================================================
+# 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:
+        raise OSError("cannot write mode %s as BMP" % im.mode) 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]
+
+    # bitmap header
+    if bitmap_header:
+        offset = 14 + header + colors * 4
+        file_size = offset + image
+        if file_size > 2 ** 32 - 1:
+            raise ValueError("File size is too large for the BMP format")
+        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 im.mode == "1":
+        for i in (0, 255):
+            fp.write(o8(i) * 4)
+    elif im.mode == "L":
+        for i in range(256):
+            fp.write(o8(i) * 4)
+    elif im.mode == "P":
+        fp.write(im.im.getpalette("RGB", "BGRX"))
+
+    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_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")

django/lib/python3.6/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)):
+            raise SyntaxError("Not a BUFR file")
+
+        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"):
+        raise OSError("BUFR save handler not installed")
+    _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")

django/lib/python3.6/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

django/lib/python3.6/site-packages/PIL/CurImagePlugin.py

@@ -0,0 +1,74 @@
+#
+# 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 i8, i16le as i16, 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):
+            raise SyntaxError("not a CUR file")
+
+        # 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 i8(s[0]) > i8(m[0]) and i8(s[1]) > i8(m[1]):
+                m = s
+        if not m:
+            raise TypeError("No cursors were found")
+
+        # 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")

django/lib/python3.6/site-packages/PIL/DcxImagePlugin.py

@@ -0,0 +1,89 @@
+#
+# 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):
+            raise SyntaxError("not a DCX file")
+
+        # 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
+
+    def _close__fp(self):
+        try:
+            if self.__fp != self.fp:
+                self.__fp.close()
+        except AttributeError:
+            pass
+        finally:
+            self.__fp = None
+
+
+Image.register_open(DcxImageFile.format, DcxImageFile, _accept)
+
+Image.register_extension(DcxImageFile.format, ".dcx")

django/lib/python3.6/site-packages/PIL/DdsImagePlugin.py

@@ -0,0 +1,178 @@
+"""
+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
+
+# 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_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):
+        magic, header_size = struct.unpack("<II", self.fp.read(8))
+        if header_size != 124:
+            raise OSError("Unsupported header size %r" % (header_size))
+        header_bytes = self.fp.read(header_size - 4)
+        if len(header_bytes) != 120:
+            raise OSError("Incomplete header: %s bytes" % len(header_bytes))
+        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 & 0x40:
+            # DDPF_RGB - Texture contains uncompressed RGB data
+            masks = {mask: ["R", "G", "B", "A"][i] for i, mask in enumerate(masks)}
+            rawmode = ""
+            if bitcount == 32:
+                rawmode += masks[0xFF000000]
+            rawmode += masks[0xFF0000] + masks[0xFF00] + masks[0xFF]
+
+            self.tile = [("raw", (0, 0) + self.size, 0, (rawmode, 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"DX10":
+                data_start += 20
+                # ignoring flags which pertain to volume textures and cubemaps
+                dxt10 = BytesIO(self.fp.read(20))
+                dxgi_format, dimension = struct.unpack("<II", dxt10.read(8))
+                if 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
+                else:
+                    raise NotImplementedError(
+                        "Unimplemented DXGI format %d" % (dxgi_format)
+                    )
+            else:
+                raise NotImplementedError("Unimplemented pixel format %r" % (fourcc))
+
+            self.tile = [("bcn", (0, 0) + self.size, data_start, (n))]
+
+    def load_seek(self, pos):
+        pass
+
+
+def _validate(prefix):
+    return prefix[:4] == b"DDS "
+
+
+Image.register_open(DdsImageFile.format, DdsImageFile, _validate)
+Image.register_extension(DdsImageFile.format, ".dds")

django/lib/python3.6/site-packages/PIL/EpsImagePlugin.py

@@ -0,0 +1,419 @@
+#
+# 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
+
+#
+# --------------------------------------------------------------------
+
+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):
+    """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)
+
+    # 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
+        "-sDEVICE=ppmraw",  # ppm driver
+        "-sOutputFile=%s" % outfile,  # output file
+        # adjust for image origin
+        "-c",
+        "%d %d translate" % (-bbox[0], -bbox[1]),
+        "-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:
+            raise OSError("Unable to locate Ghostscript on paths")
+        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.
+    """
+
+    def __init__(self, fp):
+        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":
+            s = s + 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 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)
+
+        # Rewrap the open file pointer in something that will
+        # convert line endings and decode to latin-1.
+        fp = PSFile(self.fp)
+
+        # go to offset - start of "%!PS"
+        fp.seek(offset)
+
+        box = None
+
+        self.mode = "RGB"
+        self._size = 1, 1  # FIXME: huh?
+
+        #
+        # Load EPS header
+
+        s_raw = fp.readline()
+        s = s_raw.strip("\r\n")
+
+        while s_raw:
+            if s:
+                if len(s) > 255:
+                    raise SyntaxError("not an EPS file")
+
+                try:
+                    m = split.match(s)
+                except re.error as e:
+                    raise SyntaxError("not an EPS file") 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 == "EndComments":
+                            break
+                        if k[:8] == "PS-Adobe":
+                            self.info[k[:8]] = 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:
+                        raise OSError("bad EPS header")
+
+            s_raw = fp.readline()
+            s = s_raw.strip("\r\n")
+
+            if s and s[:1] != "%":
+                break
+
+        #
+        # Scan for an "ImageData" descriptor
+
+        while s[:1] == "%":
+
+            if len(s) > 255:
+                raise SyntaxError("not an EPS file")
+
+            if s[:11] == "%ImageData:":
+                # Encoded bitmapped image.
+                x, y, bi, mo = s[11:].split(None, 7)[:4]
+
+                if int(bi) != 8:
+                    break
+                try:
+                    self.mode = self.mode_map[int(mo)]
+                except ValueError:
+                    break
+
+                self._size = int(x), int(y)
+                return
+
+            s = fp.readline().strip("\r\n")
+            if not s:
+                break
+
+        if not box:
+            raise OSError("cannot determine EPS bounding box")
+
+    def _find_offset(self, fp):
+
+        s = fp.read(160)
+
+        if s[:4] == b"%!PS":
+            # for HEAD without binary preview
+            fp.seek(0, io.SEEK_END)
+            length = fp.tell()
+            offset = 0
+        elif i32(s[0:4]) == 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
+            offset = i32(s[4:8])
+            length = i32(s[8:12])
+        else:
+            raise SyntaxError("not an EPS file")
+
+        return (length, offset)
+
+    def load(self, scale=1):
+        # Load EPS via Ghostscript
+        if not self.tile:
+            return
+        self.im = Ghostscript(self.tile, self.size, self.fp, scale)
+        self.mode = self.im.mode
+        self._size = self.im.size
+        self.tile = []
+
+    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, "image")
+    elif im.mode == "RGB":
+        operator = (8, 3, "false 3 colorimage")
+    elif im.mode == "CMYK":
+        operator = (8, 4, "false 4 colorimage")
+    else:
+        raise ValueError("image mode is not supported")
+
+    base_fp = fp
+    wrapped_fp = False
+    if fp != sys.stdout:
+        fp = io.TextIOWrapper(fp, encoding="latin-1")
+        wrapped_fp = True
+
+    try:
+        if eps:
+            #
+            # write EPS header
+            fp.write("%!PS-Adobe-3.0 EPSF-3.0\n")
+            fp.write("%%Creator: PIL 0.1 EpsEncode\n")
+            # fp.write("%%CreationDate: %s"...)
+            fp.write("%%%%BoundingBox: 0 0 %d %d\n" % im.size)
+            fp.write("%%Pages: 1\n")
+            fp.write("%%EndComments\n")
+            fp.write("%%Page: 1 1\n")
+            fp.write("%%ImageData: %d %d " % im.size)
+            fp.write('%d %d 0 1 1 "%s"\n' % operator)
+
+        #
+        # image header
+        fp.write("gsave\n")
+        fp.write("10 dict begin\n")
+        fp.write("/buf %d string def\n" % (im.size[0] * operator[1]))
+        fp.write("%d %d scale\n" % im.size)
+        fp.write("%d %d 8\n" % im.size)  # <= bits
+        fp.write("[%d 0 0 -%d 0 %d]\n" % (im.size[0], im.size[1], im.size[1]))
+        fp.write("{ currentfile buf readhexstring pop } bind\n")
+        fp.write(operator[2] + "\n")
+        if hasattr(fp, "flush"):
+            fp.flush()
+
+        ImageFile._save(im, base_fp, [("eps", (0, 0) + im.size, 0, None)])
+
+        fp.write("\n%%%%EndBinary\n")
+        fp.write("grestore end\n")
+        if hasattr(fp, "flush"):
+            fp.flush()
+    finally:
+        if wrapped_fp:
+            fp.detach()
+
+
+#
+# --------------------------------------------------------------------
+
+
+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")

django/lib/python3.6/site-packages/PIL/ExifTags.py

@@ -0,0 +1,318 @@
+#
+# 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.
+"""
+
+
+TAGS = {
+    # possibly incomplete
+    0x000B: "ProcessingSoftware",
+    0x00FE: "NewSubfileType",
+    0x00FF: "SubfileType",
+    0x0100: "ImageWidth",
+    0x0101: "ImageLength",
+    0x0102: "BitsPerSample",
+    0x0103: "Compression",
+    0x0106: "PhotometricInterpretation",
+    0x0107: "Thresholding",
+    0x0108: "CellWidth",
+    0x0109: "CellLength",
+    0x010A: "FillOrder",
+    0x010D: "DocumentName",
+    0x010E: "ImageDescription",
+    0x010F: "Make",
+    0x0110: "Model",
+    0x0111: "StripOffsets",
+    0x0112: "Orientation",
+    0x0115: "SamplesPerPixel",
+    0x0116: "RowsPerStrip",
+    0x0117: "StripByteCounts",
+    0x0118: "MinSampleValue",
+    0x0119: "MaxSampleValue",
+    0x011A: "XResolution",
+    0x011B: "YResolution",
+    0x011C: "PlanarConfiguration",
+    0x011D: "PageName",
+    0x0120: "FreeOffsets",
+    0x0121: "FreeByteCounts",
+    0x0122: "GrayResponseUnit",
+    0x0123: "GrayResponseCurve",
+    0x0124: "T4Options",
+    0x0125: "T6Options",
+    0x0128: "ResolutionUnit",
+    0x0129: "PageNumber",
+    0x012D: "TransferFunction",
+    0x0131: "Software",
+    0x0132: "DateTime",
+    0x013B: "Artist",
+    0x013C: "HostComputer",
+    0x013D: "Predictor",
+    0x013E: "WhitePoint",
+    0x013F: "PrimaryChromaticities",
+    0x0140: "ColorMap",
+    0x0141: "HalftoneHints",
+    0x0142: "TileWidth",
+    0x0143: "TileLength",
+    0x0144: "TileOffsets",
+    0x0145: "TileByteCounts",
+    0x014A: "SubIFDs",
+    0x014C: "InkSet",
+    0x014D: "InkNames",
+    0x014E: "NumberOfInks",
+    0x0150: "DotRange",
+    0x0151: "TargetPrinter",
+    0x0152: "ExtraSamples",
+    0x0153: "SampleFormat",
+    0x0154: "SMinSampleValue",
+    0x0155: "SMaxSampleValue",
+    0x0156: "TransferRange",
+    0x0157: "ClipPath",
+    0x0158: "XClipPathUnits",
+    0x0159: "YClipPathUnits",
+    0x015A: "Indexed",
+    0x015B: "JPEGTables",
+    0x015F: "OPIProxy",
+    0x0200: "JPEGProc",
+    0x0201: "JpegIFOffset",
+    0x0202: "JpegIFByteCount",
+    0x0203: "JpegRestartInterval",
+    0x0205: "JpegLosslessPredictors",
+    0x0206: "JpegPointTransforms",
+    0x0207: "JpegQTables",
+    0x0208: "JpegDCTables",
+    0x0209: "JpegACTables",
+    0x0211: "YCbCrCoefficients",
+    0x0212: "YCbCrSubSampling",
+    0x0213: "YCbCrPositioning",
+    0x0214: "ReferenceBlackWhite",
+    0x02BC: "XMLPacket",
+    0x1000: "RelatedImageFileFormat",
+    0x1001: "RelatedImageWidth",
+    0x1002: "RelatedImageLength",
+    0x4746: "Rating",
+    0x4749: "RatingPercent",
+    0x800D: "ImageID",
+    0x828D: "CFARepeatPatternDim",
+    0x828E: "CFAPattern",
+    0x828F: "BatteryLevel",
+    0x8298: "Copyright",
+    0x829A: "ExposureTime",
+    0x829D: "FNumber",
+    0x83BB: "IPTCNAA",
+    0x8649: "ImageResources",
+    0x8769: "ExifOffset",
+    0x8773: "InterColorProfile",
+    0x8822: "ExposureProgram",
+    0x8824: "SpectralSensitivity",
+    0x8825: "GPSInfo",
+    0x8827: "ISOSpeedRatings",
+    0x8828: "OECF",
+    0x8829: "Interlace",
+    0x882A: "TimeZoneOffset",
+    0x882B: "SelfTimerMode",
+    0x9000: "ExifVersion",
+    0x9003: "DateTimeOriginal",
+    0x9004: "DateTimeDigitized",
+    0x9101: "ComponentsConfiguration",
+    0x9102: "CompressedBitsPerPixel",
+    0x9201: "ShutterSpeedValue",
+    0x9202: "ApertureValue",
+    0x9203: "BrightnessValue",
+    0x9204: "ExposureBiasValue",
+    0x9205: "MaxApertureValue",
+    0x9206: "SubjectDistance",
+    0x9207: "MeteringMode",
+    0x9208: "LightSource",
+    0x9209: "Flash",
+    0x920A: "FocalLength",
+    0x920B: "FlashEnergy",
+    0x920C: "SpatialFrequencyResponse",
+    0x920D: "Noise",
+    0x9211: "ImageNumber",
+    0x9212: "SecurityClassification",
+    0x9213: "ImageHistory",
+    0x9214: "SubjectLocation",
+    0x9215: "ExposureIndex",
+    0x9216: "TIFF/EPStandardID",
+    0x927C: "MakerNote",
+    0x9286: "UserComment",
+    0x9290: "SubsecTime",
+    0x9291: "SubsecTimeOriginal",
+    0x9292: "SubsecTimeDigitized",
+    0x9400: "AmbientTemperature",
+    0x9401: "Humidity",
+    0x9402: "Pressure",
+    0x9403: "WaterDepth",
+    0x9404: "Acceleration",
+    0x9405: "CameraElevationAngle",
+    0x9C9B: "XPTitle",
+    0x9C9C: "XPComment",
+    0x9C9D: "XPAuthor",
+    0x9C9E: "XPKeywords",
+    0x9C9F: "XPSubject",
+    0xA000: "FlashPixVersion",
+    0xA001: "ColorSpace",
+    0xA002: "ExifImageWidth",
+    0xA003: "ExifImageHeight",
+    0xA004: "RelatedSoundFile",
+    0xA005: "ExifInteroperabilityOffset",
+    0xA20B: "FlashEnergy",
+    0xA20C: "SpatialFrequencyResponse",
+    0xA20E: "FocalPlaneXResolution",
+    0xA20F: "FocalPlaneYResolution",
+    0xA210: "FocalPlaneResolutionUnit",
+    0xA214: "SubjectLocation",
+    0xA215: "ExposureIndex",
+    0xA217: "SensingMethod",
+    0xA300: "FileSource",
+    0xA301: "SceneType",
+    0xA302: "CFAPattern",
+    0xA401: "CustomRendered",
+    0xA402: "ExposureMode",
+    0xA403: "WhiteBalance",
+    0xA404: "DigitalZoomRatio",
+    0xA405: "FocalLengthIn35mmFilm",
+    0xA406: "SceneCaptureType",
+    0xA407: "GainControl",
+    0xA408: "Contrast",
+    0xA409: "Saturation",
+    0xA40A: "Sharpness",
+    0xA40B: "DeviceSettingDescription",
+    0xA40C: "SubjectDistanceRange",
+    0xA420: "ImageUniqueID",
+    0xA430: "CameraOwnerName",
+    0xA431: "BodySerialNumber",
+    0xA432: "LensSpecification",
+    0xA433: "LensMake",
+    0xA434: "LensModel",
+    0xA435: "LensSerialNumber",
+    0xA500: "Gamma",
+    0xC4A5: "PrintImageMatching",
+    0xC612: "DNGVersion",
+    0xC613: "DNGBackwardVersion",
+    0xC614: "UniqueCameraModel",
+    0xC615: "LocalizedCameraModel",
+    0xC616: "CFAPlaneColor",
+    0xC617: "CFALayout",
+    0xC618: "LinearizationTable",
+    0xC619: "BlackLevelRepeatDim",
+    0xC61A: "BlackLevel",
+    0xC61B: "BlackLevelDeltaH",
+    0xC61C: "BlackLevelDeltaV",
+    0xC61D: "WhiteLevel",
+    0xC61E: "DefaultScale",
+    0xC61F: "DefaultCropOrigin",
+    0xC620: "DefaultCropSize",
+    0xC621: "ColorMatrix1",
+    0xC622: "ColorMatrix2",
+    0xC623: "CameraCalibration1",
+    0xC624: "CameraCalibration2",
+    0xC625: "ReductionMatrix1",
+    0xC626: "ReductionMatrix2",
+    0xC627: "AnalogBalance",
+    0xC628: "AsShotNeutral",
+    0xC629: "AsShotWhiteXY",
+    0xC62A: "BaselineExposure",
+    0xC62B: "BaselineNoise",
+    0xC62C: "BaselineSharpness",
+    0xC62D: "BayerGreenSplit",
+    0xC62E: "LinearResponseLimit",
+    0xC62F: "CameraSerialNumber",
+    0xC630: "LensInfo",
+    0xC631: "ChromaBlurRadius",
+    0xC632: "AntiAliasStrength",
+    0xC633: "ShadowScale",
+    0xC634: "DNGPrivateData",
+    0xC635: "MakerNoteSafety",
+    0xC65A: "CalibrationIlluminant1",
+    0xC65B: "CalibrationIlluminant2",
+    0xC65C: "BestQualityScale",
+    0xC65D: "RawDataUniqueID",
+    0xC68B: "OriginalRawFileName",
+    0xC68C: "OriginalRawFileData",
+    0xC68D: "ActiveArea",
+    0xC68E: "MaskedAreas",
+    0xC68F: "AsShotICCProfile",
+    0xC690: "AsShotPreProfileMatrix",
+    0xC691: "CurrentICCProfile",
+    0xC692: "CurrentPreProfileMatrix",
+    0xC6BF: "ColorimetricReference",
+    0xC6F3: "CameraCalibrationSignature",
+    0xC6F4: "ProfileCalibrationSignature",
+    0xC6F6: "AsShotProfileName",
+    0xC6F7: "NoiseReductionApplied",
+    0xC6F8: "ProfileName",
+    0xC6F9: "ProfileHueSatMapDims",
+    0xC6FA: "ProfileHueSatMapData1",
+    0xC6FB: "ProfileHueSatMapData2",
+    0xC6FC: "ProfileToneCurve",
+    0xC6FD: "ProfileEmbedPolicy",
+    0xC6FE: "ProfileCopyright",
+    0xC714: "ForwardMatrix1",
+    0xC715: "ForwardMatrix2",
+    0xC716: "PreviewApplicationName",
+    0xC717: "PreviewApplicationVersion",
+    0xC718: "PreviewSettingsName",
+    0xC719: "PreviewSettingsDigest",
+    0xC71A: "PreviewColorSpace",
+    0xC71B: "PreviewDateTime",
+    0xC71C: "RawImageDigest",
+    0xC71D: "OriginalRawFileDigest",
+    0xC71E: "SubTileBlockSize",
+    0xC71F: "RowInterleaveFactor",
+    0xC725: "ProfileLookTableDims",
+    0xC726: "ProfileLookTableData",
+    0xC740: "OpcodeList1",
+    0xC741: "OpcodeList2",
+    0xC74E: "OpcodeList3",
+    0xC761: "NoiseProfile",
+}
+"""Maps EXIF tags to tag names."""
+
+
+GPSTAGS = {
+    0: "GPSVersionID",
+    1: "GPSLatitudeRef",
+    2: "GPSLatitude",
+    3: "GPSLongitudeRef",
+    4: "GPSLongitude",
+    5: "GPSAltitudeRef",
+    6: "GPSAltitude",
+    7: "GPSTimeStamp",
+    8: "GPSSatellites",
+    9: "GPSStatus",
+    10: "GPSMeasureMode",
+    11: "GPSDOP",
+    12: "GPSSpeedRef",
+    13: "GPSSpeed",
+    14: "GPSTrackRef",
+    15: "GPSTrack",
+    16: "GPSImgDirectionRef",
+    17: "GPSImgDirection",
+    18: "GPSMapDatum",
+    19: "GPSDestLatitudeRef",
+    20: "GPSDestLatitude",
+    21: "GPSDestLongitudeRef",
+    22: "GPSDestLongitude",
+    23: "GPSDestBearingRef",
+    24: "GPSDestBearing",
+    25: "GPSDestDistanceRef",
+    26: "GPSDestDistance",
+    27: "GPSProcessingMethod",
+    28: "GPSAreaInformation",
+    29: "GPSDateStamp",
+    30: "GPSDifferential",
+    31: "GPSHPositioningError",
+}
+"""Maps EXIF GPS tags to tag names."""

django/lib/python3.6/site-packages/PIL/FitsStubImagePlugin.py

@@ -0,0 +1,76 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# FITS stub adapter
+#
+# Copyright (c) 1998-2003 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 FITS image handler.
+
+    :param handler: Handler object.
+    """
+    global _handler
+    _handler = handler
+
+
+# --------------------------------------------------------------------
+# Image adapter
+
+
+def _accept(prefix):
+    return prefix[:6] == b"SIMPLE"
+
+
+class FITSStubImageFile(ImageFile.StubImageFile):
+
+    format = "FITS"
+    format_description = "FITS"
+
+    def _open(self):
+
+        offset = self.fp.tell()
+
+        if not _accept(self.fp.read(6)):
+            raise SyntaxError("Not a FITS file")
+
+        # FIXME: add more sanity checks here; mandatory header items
+        # include SIMPLE, BITPIX, NAXIS, etc.
+
+        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"):
+        raise OSError("FITS save handler not installed")
+    _handler.save(im, fp, filename)
+
+
+# --------------------------------------------------------------------
+# Registry
+
+Image.register_open(FITSStubImageFile.format, FITSStubImageFile, _accept)
+Image.register_save(FITSStubImageFile.format, _save)
+
+Image.register_extensions(FITSStubImageFile.format, [".fit", ".fits"])

django/lib/python3.6/site-packages/PIL/FliImagePlugin.py

@@ -0,0 +1,169 @@
+#
+# 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.
+#
+
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import i8, i16le as i16, i32le as i32, o8
+
+#
+# decoder
+
+
+def _accept(prefix):
+    return len(prefix) >= 6 and i16(prefix[4:6]) in [0xAF11, 0xAF12]
+
+
+##
+# 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 i16(s[14:16]) in [0, 3]  # flags
+            and s[20:22] == b"\x00\x00"  # reserved
+        ):
+            raise SyntaxError("not an FLI/FLC file")
+
+        # frames
+        self.n_frames = i16(s[6:8])
+        self.is_animated = self.n_frames > 1
+
+        # image characteristics
+        self.mode = "P"
+        self._size = i16(s[8:10]), i16(s[10:12])
+
+        # animation speed
+        duration = i32(s[16:20])
+        magic = i16(s[4:6])
+        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[4:6]) == 0xF100:
+            # prefix chunk; ignore it
+            self.__offset = self.__offset + i32(s)
+            s = self.fp.read(16)
+
+        if i16(s[4:6]) == 0xF1FA:
+            # look for palette chunk
+            s = self.fp.read(6)
+            if i16(s[4:6]) == 11:
+                self._palette(palette, 2)
+            elif i16(s[4:6]) == 4:
+                self._palette(palette, 0)
+
+        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 + i8(s[0])
+            n = i8(s[1])
+            if n == 0:
+                n = 256
+            s = self.fp.read(n * 3)
+            for n in range(0, len(s), 3):
+                r = i8(s[n]) << shift
+                g = i8(s[n + 1]) << shift
+                b = i8(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:
+            raise ValueError("cannot seek to frame %d" % frame)
+        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
+
+    def _close__fp(self):
+        try:
+            if self.__fp != self.fp:
+                self.__fp.close()
+        except AttributeError:
+            pass
+        finally:
+            self.__fp = None
+
+
+#
+# registry
+
+Image.register_open(FliImageFile.format, FliImageFile, _accept)
+
+Image.register_extensions(FliImageFile.format, [".fli", ".flc"])

django/lib/python3.6/site-packages/PIL/FontFile.py

@@ -0,0 +1,111 @@
+#
+# 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((";;;;;;%d;\n" % self.ysize).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])

django/lib/python3.6/site-packages/PIL/FpxImagePlugin.py

@@ -0,0 +1,242 @@
+#
+# 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 i8, 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:
+            raise SyntaxError("not an FPX file; invalid OLE file") from e
+
+        if self.ole.root.clsid != "56616700-C154-11CE-8553-00AA00A1F95B":
+            raise SyntaxError("not an FPX file; bad root CLSID")
+
+        self._open_index(1)
+
+    def _open_index(self, index=1):
+        #
+        # get the Image Contents Property Set
+
+        prop = self.ole.getproperties(
+            ["Data Object Store %06d" % index, "\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:
+            raise OSError("Invalid number of bands")
+        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 = [
+            "Data Object Store %06d" % index,
+            "Resolution %04d" % subimage,
+            "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:
+            raise OSError("subimage mismatch")
+
+        # 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):
+
+            compression = i32(s, i + 8)
+
+            if compression == 0:
+                self.tile.append(
+                    (
+                        "raw",
+                        (x, y, x + xtile, y + ytile),
+                        i32(s, i) + 28,
+                        (self.rawmode),
+                    )
+                )
+
+            elif compression == 1:
+
+                # FIXME: the fill decoder is not implemented
+                self.tile.append(
+                    (
+                        "fill",
+                        (x, y, x + xtile, y + ytile),
+                        i32(s, i) + 28,
+                        (self.rawmode, s[12:16]),
+                    )
+                )
+
+            elif compression == 2:
+
+                internal_color_conversion = i8(s[14])
+                jpeg_tables = i8(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, x + xtile, y + ytile),
+                        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:
+                raise OSError("unknown/invalid compression")
+
+            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)
+
+
+#
+# --------------------------------------------------------------------
+
+
+Image.register_open(FpxImageFile.format, FpxImageFile, _accept)
+
+Image.register_extension(FpxImageFile.format, ".fpx")

django/lib/python3.6/site-packages/PIL/FtexImagePlugin.py

@@ -0,0 +1,106 @@
+"""
+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 io import BytesIO
+
+from . import Image, ImageFile
+
+MAGIC = b"FTEX"
+FORMAT_DXT1 = 0
+FORMAT_UNCOMPRESSED = 1
+
+
+class FtexImageFile(ImageFile.ImageFile):
+    format = "FTEX"
+    format_description = "Texture File Format (IW2:EOC)"
+
+    def _open(self):
+        struct.unpack("<I", self.fp.read(4))  # magic
+        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:
+            raise ValueError("Invalid texture compression format: %r" % (format))
+
+        self.fp.close()
+        self.fp = BytesIO(data)
+
+    def load_seek(self, pos):
+        pass
+
+
+def _validate(prefix):
+    return prefix[:4] == MAGIC
+
+
+Image.register_open(FtexImageFile.format, FtexImageFile, _validate)
+Image.register_extensions(FtexImageFile.format, [".ftc", ".ftu"])

django/lib/python3.6/site-packages/PIL/GbrImagePlugin.py

@@ -0,0 +1,100 @@
+#
+# 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[:4]) >= 20 and i32(prefix[4:8]) 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))
+        version = i32(self.fp.read(4))
+        if header_size < 20:
+            raise SyntaxError("not a GIMP brush")
+        if version not in (1, 2):
+            raise SyntaxError("Unsupported GIMP brush version: %s" % version)
+
+        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:
+            raise SyntaxError("not a GIMP brush")
+        if color_depth not in (1, 4):
+            raise SyntaxError("Unsupported GIMP brush color depth: %s" % color_depth)
+
+        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":
+                raise SyntaxError("not a GIMP brush, bad magic number")
+            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 self.im:
+            # Already loaded
+            return
+
+        self.im = Image.core.new(self.mode, self.size)
+        self.frombytes(self.fp.read(self._data_size))
+
+
+#
+# registry
+
+
+Image.register_open(GbrImageFile.format, GbrImageFile, _accept)
+Image.register_extension(GbrImageFile.format, ".gbr")

django/lib/python3.6/site-packages/PIL/GdImageFile.py

@@ -0,0 +1,89 @@
+#
+# 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 i8, i16be as i16, 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 not i16(s[:2]) in [65534, 65535]:
+            raise SyntaxError("Not a valid GD 2.x .gd file")
+
+        self.mode = "L"  # FIXME: "P"
+        self._size = i16(s[2:4]), i16(s[4:6])
+
+        trueColor = i8(s[6])
+        trueColorOffset = 2 if trueColor else 0
+
+        # transparency index
+        tindex = i32(s[7 + trueColorOffset : 7 + trueColorOffset + 4])
+        if tindex < 256:
+            self.info["transparency"] = tindex
+
+        self.palette = ImagePalette.raw(
+            "XBGR", s[7 + trueColorOffset + 4 : 7 + trueColorOffset + 4 + 256 * 4]
+        )
+
+        self.tile = [
+            ("raw", (0, 0) + self.size, 7 + trueColorOffset + 4 + 256 * 4, ("L", 0, 1))
+        ]
+
+
+def open(fp, mode="r"):
+    """
+    Load texture from a GD image file.
+
+    :param filename: 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":
+        raise ValueError("bad mode")
+
+    try:
+        return GdImageFile(fp)
+    except SyntaxError as e:
+        raise UnidentifiedImageError("cannot identify this image file") from e

django/lib/python3.6/site-packages/PIL/GifImagePlugin.py

@@ -0,0 +1,885 @@
+#
+# The Python Imaging Library.
+# $Id$
+#
+# GIF file handling
+#
+# History:
+# 1995-09-01 fl   Created
+# 1996-12-14 fl   Added interlace support
+# 1996-12-30 fl   Added animation support
+# 1997-01-05 fl   Added write support, fixed local colour map bug
+# 1997-02-23 fl   Make sure to load raster data in getdata()
+# 1997-07-05 fl   Support external decoder (0.4)
+# 1998-07-09 fl   Handle all modes when saving (0.5)
+# 1998-07-15 fl   Renamed offset attribute to avoid name clash
+# 2001-04-16 fl   Added rewind support (seek to frame 0) (0.6)
+# 2001-04-17 fl   Added palette optimization (0.7)
+# 2002-06-06 fl   Added transparency support for save (0.8)
+# 2004-02-24 fl   Disable interlacing for small images
+#
+# 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 itertools
+import math
+import os
+import subprocess
+
+from . import Image, ImageChops, ImageFile, ImagePalette, ImageSequence
+from ._binary import i8, i16le as i16, o8, o16le as o16
+
+# --------------------------------------------------------------------
+# Identify/read GIF files
+
+
+def _accept(prefix):
+    return prefix[:6] in [b"GIF87a", b"GIF89a"]
+
+
+##
+# Image plugin for GIF images.  This plugin supports both GIF87 and
+# GIF89 images.
+
+
+class GifImageFile(ImageFile.ImageFile):
+
+    format = "GIF"
+    format_description = "Compuserve GIF"
+    _close_exclusive_fp_after_loading = False
+
+    global_palette = None
+
+    def data(self):
+        s = self.fp.read(1)
+        if s and i8(s):
+            return self.fp.read(i8(s))
+        return None
+
+    def _open(self):
+
+        # Screen
+        s = self.fp.read(13)
+        if not _accept(s):
+            raise SyntaxError("not a GIF file")
+
+        self.info["version"] = s[:6]
+        self._size = i16(s[6:]), i16(s[8:])
+        self.tile = []
+        flags = i8(s[10])
+        bits = (flags & 7) + 1
+
+        if flags & 128:
+            # get global palette
+            self.info["background"] = i8(s[11])
+            # check if palette contains colour indices
+            p = self.fp.read(3 << bits)
+            for i in range(0, len(p), 3):
+                if not (i // 3 == i8(p[i]) == i8(p[i + 1]) == i8(p[i + 2])):
+                    p = ImagePalette.raw("RGB", p)
+                    self.global_palette = self.palette = p
+                    break
+
+        self.__fp = self.fp  # FIXME: hack
+        self.__rewind = self.fp.tell()
+        self._n_frames = None
+        self._is_animated = None
+        self._seek(0)  # get ready to read first frame
+
+    @property
+    def n_frames(self):
+        if self._n_frames is None:
+            current = self.tell()
+            try:
+                while True:
+                    self.seek(self.tell() + 1)
+            except EOFError:
+                self._n_frames = self.tell() + 1
+            self.seek(current)
+        return self._n_frames
+
+    @property
+    def is_animated(self):
+        if self._is_animated is None:
+            if self._n_frames is not None:
+                self._is_animated = self._n_frames != 1
+            else:
+                current = self.tell()
+
+                try:
+                    self.seek(1)
+                    self._is_animated = True
+                except EOFError:
+                    self._is_animated = False
+
+                self.seek(current)
+        return self._is_animated
+
+    def seek(self, frame):
+        if not self._seek_check(frame):
+            return
+        if frame < self.__frame:
+            if frame != 0:
+                self.im = None
+            self._seek(0)
+
+        last_frame = self.__frame
+        for f in range(self.__frame + 1, frame + 1):
+            try:
+                self._seek(f)
+            except EOFError as e:
+                self.seek(last_frame)
+                raise EOFError("no more images in GIF file") from e
+
+    def _seek(self, frame):
+
+        if frame == 0:
+            # rewind
+            self.__offset = 0
+            self.dispose = None
+            self.dispose_extent = [0, 0, 0, 0]  # x0, y0, x1, y1
+            self.__frame = -1
+            self.__fp.seek(self.__rewind)
+            self._prev_im = None
+            self.disposal_method = 0
+        else:
+            # ensure that the previous frame was loaded
+            if not self.im:
+                self.load()
+
+        if frame != self.__frame + 1:
+            raise ValueError("cannot seek to frame %d" % frame)
+        self.__frame = frame
+
+        self.tile = []
+
+        self.fp = self.__fp
+        if self.__offset:
+            # backup to last frame
+            self.fp.seek(self.__offset)
+            while self.data():
+                pass
+            self.__offset = 0
+
+        if self.dispose:
+            self.im.paste(self.dispose, self.dispose_extent)
+
+        from copy import copy
+
+        self.palette = copy(self.global_palette)
+
+        info = {}
+        while True:
+
+            s = self.fp.read(1)
+            if not s or s == b";":
+                break
+
+            elif s == b"!":
+                #
+                # extensions
+                #
+                s = self.fp.read(1)
+                block = self.data()
+                if i8(s) == 249:
+                    #
+                    # graphic control extension
+                    #
+                    flags = i8(block[0])
+                    if flags & 1:
+                        info["transparency"] = i8(block[3])
+                    info["duration"] = i16(block[1:3]) * 10
+
+                    # disposal method - find the value of bits 4 - 6
+                    dispose_bits = 0b00011100 & flags
+                    dispose_bits = dispose_bits >> 2
+                    if dispose_bits:
+                        # only set the dispose if it is not
+                        # unspecified. I'm not sure if this is
+                        # correct, but it seems to prevent the last
+                        # frame from looking odd for some animations
+                        self.disposal_method = dispose_bits
+                elif i8(s) == 254:
+                    #
+                    # comment extension
+                    #
+                    while block:
+                        if "comment" in info:
+                            info["comment"] += block
+                        else:
+                            info["comment"] = block
+                        block = self.data()
+                    continue
+                elif i8(s) == 255:
+                    #
+                    # application extension
+                    #
+                    info["extension"] = block, self.fp.tell()
+                    if block[:11] == b"NETSCAPE2.0":
+                        block = self.data()
+                        if len(block) >= 3 and i8(block[0]) == 1:
+                            info["loop"] = i16(block[1:3])
+                while self.data():
+                    pass
+
+            elif s == b",":
+                #
+                # local image
+                #
+                s = self.fp.read(9)
+
+                # extent
+                x0, y0 = i16(s[0:]), i16(s[2:])
+                x1, y1 = x0 + i16(s[4:]), y0 + i16(s[6:])
+                if x1 > self.size[0] or y1 > self.size[1]:
+                    self._size = max(x1, self.size[0]), max(y1, self.size[1])
+                self.dispose_extent = x0, y0, x1, y1
+                flags = i8(s[8])
+
+                interlace = (flags & 64) != 0
+
+                if flags & 128:
+                    bits = (flags & 7) + 1
+                    self.palette = ImagePalette.raw("RGB", self.fp.read(3 << bits))
+
+                # image data
+                bits = i8(self.fp.read(1))
+                self.__offset = self.fp.tell()
+                self.tile = [
+                    ("gif", (x0, y0, x1, y1), self.__offset, (bits, interlace))
+                ]
+                break
+
+            else:
+                pass
+                # raise OSError, "illegal GIF tag `%x`" % i8(s)
+
+        try:
+            if self.disposal_method < 2:
+                # do not dispose or none specified
+                self.dispose = None
+            elif self.disposal_method == 2:
+                # replace with background colour
+                Image._decompression_bomb_check(self.size)
+                self.dispose = Image.core.fill("P", self.size, self.info["background"])
+            else:
+                # replace with previous contents
+                if self.im:
+                    self.dispose = self.im.copy()
+
+            # only dispose the extent in this frame
+            if self.dispose:
+                self.dispose = self._crop(self.dispose, self.dispose_extent)
+        except (AttributeError, KeyError):
+            pass
+
+        if not self.tile:
+            # self.__fp = None
+            raise EOFError
+
+        for k in ["transparency", "duration", "comment", "extension", "loop"]:
+            if k in info:
+                self.info[k] = info[k]
+            elif k in self.info:
+                del self.info[k]
+
+        self.mode = "L"
+        if self.palette:
+            self.mode = "P"
+
+    def tell(self):
+        return self.__frame
+
+    def load_end(self):
+        ImageFile.ImageFile.load_end(self)
+
+        # if the disposal method is 'do not dispose', transparent
+        # pixels should show the content of the previous frame
+        if self._prev_im and self.disposal_method == 1:
+            # we do this by pasting the updated area onto the previous
+            # frame which we then use as the current image content
+            updated = self._crop(self.im, self.dispose_extent)
+            self._prev_im.paste(updated, self.dispose_extent, updated.convert("RGBA"))
+            self.im = self._prev_im
+        self._prev_im = self.im.copy()
+
+    def _close__fp(self):
+        try:
+            if self.__fp != self.fp:
+                self.__fp.close()
+        except AttributeError:
+            pass
+        finally:
+            self.__fp = None
+
+
+# --------------------------------------------------------------------
+# Write GIF files
+
+
+RAWMODE = {"1": "L", "L": "L", "P": "P"}
+
+
+def _normalize_mode(im, initial_call=False):
+    """
+    Takes an image (or frame), returns an image in a mode that is appropriate
+    for saving in a Gif.
+
+    It may return the original image, or it may return an image converted to
+    palette or 'L' mode.
+
+    UNDONE: What is the point of mucking with the initial call palette, for
+    an image that shouldn't have a palette, or it would be a mode 'P' and
+    get returned in the RAWMODE clause.
+
+    :param im: Image object
+    :param initial_call: Default false, set to true for a single frame.
+    :returns: Image object
+    """
+    if im.mode in RAWMODE:
+        im.load()
+        return im
+    if Image.getmodebase(im.mode) == "RGB":
+        if initial_call:
+            palette_size = 256
+            if im.palette:
+                palette_size = len(im.palette.getdata()[1]) // 3
+            return im.convert("P", palette=Image.ADAPTIVE, colors=palette_size)
+        else:
+            return im.convert("P")
+    return im.convert("L")
+
+
+def _normalize_palette(im, palette, info):
+    """
+    Normalizes the palette for image.
+      - Sets the palette to the incoming palette, if provided.
+      - Ensures that there's a palette for L mode images
+      - Optimizes the palette if necessary/desired.
+
+    :param im: Image object
+    :param palette: bytes object containing the source palette, or ....
+    :param info: encoderinfo
+    :returns: Image object
+    """
+    source_palette = None
+    if palette:
+        # a bytes palette
+        if isinstance(palette, (bytes, bytearray, list)):
+            source_palette = bytearray(palette[:768])
+        if isinstance(palette, ImagePalette.ImagePalette):
+            source_palette = bytearray(
+                itertools.chain.from_iterable(
+                    zip(
+                        palette.palette[:256],
+                        palette.palette[256:512],
+                        palette.palette[512:768],
+                    )
+                )
+            )
+
+    if im.mode == "P":
+        if not source_palette:
+            source_palette = im.im.getpalette("RGB")[:768]
+    else:  # L-mode
+        if not source_palette:
+            source_palette = bytearray(i // 3 for i in range(768))
+        im.palette = ImagePalette.ImagePalette("RGB", palette=source_palette)
+
+    used_palette_colors = _get_optimize(im, info)
+    if used_palette_colors is not None:
+        return im.remap_palette(used_palette_colors, source_palette)
+
+    im.palette.palette = source_palette
+    return im
+
+
+def _write_single_frame(im, fp, palette):
+    im_out = _normalize_mode(im, True)
+    for k, v in im_out.info.items():
+        im.encoderinfo.setdefault(k, v)
+    im_out = _normalize_palette(im_out, palette, im.encoderinfo)
+
+    for s in _get_global_header(im_out, im.encoderinfo):
+        fp.write(s)
+
+    # local image header
+    flags = 0
+    if get_interlace(im):
+        flags = flags | 64
+    _write_local_header(fp, im, (0, 0), flags)
+
+    im_out.encoderconfig = (8, get_interlace(im))
+    ImageFile._save(im_out, fp, [("gif", (0, 0) + im.size, 0, RAWMODE[im_out.mode])])
+
+    fp.write(b"\0")  # end of image data
+
+
+def _write_multiple_frames(im, fp, palette):
+
+    duration = im.encoderinfo.get("duration", im.info.get("duration"))
+    disposal = im.encoderinfo.get("disposal", im.info.get("disposal"))
+
+    im_frames = []
+    frame_count = 0
+    background_im = None
+    for imSequence in itertools.chain([im], im.encoderinfo.get("append_images", [])):
+        for im_frame in ImageSequence.Iterator(imSequence):
+            # a copy is required here since seek can still mutate the image
+            im_frame = _normalize_mode(im_frame.copy())
+            if frame_count == 0:
+                for k, v in im_frame.info.items():
+                    im.encoderinfo.setdefault(k, v)
+            im_frame = _normalize_palette(im_frame, palette, im.encoderinfo)
+
+            encoderinfo = im.encoderinfo.copy()
+            if isinstance(duration, (list, tuple)):
+                encoderinfo["duration"] = duration[frame_count]
+            if isinstance(disposal, (list, tuple)):
+                encoderinfo["disposal"] = disposal[frame_count]
+            frame_count += 1
+
+            if im_frames:
+                # delta frame
+                previous = im_frames[-1]
+                if encoderinfo.get("disposal") == 2:
+                    if background_im is None:
+                        background = _get_background(
+                            im,
+                            im.encoderinfo.get("background", im.info.get("background")),
+                        )
+                        background_im = Image.new("P", im_frame.size, background)
+                        background_im.putpalette(im_frames[0]["im"].palette)
+                    base_im = background_im
+                else:
+                    base_im = previous["im"]
+                if _get_palette_bytes(im_frame) == _get_palette_bytes(base_im):
+                    delta = ImageChops.subtract_modulo(im_frame, base_im)
+                else:
+                    delta = ImageChops.subtract_modulo(
+                        im_frame.convert("RGB"), base_im.convert("RGB")
+                    )
+                bbox = delta.getbbox()
+                if not bbox:
+                    # This frame is identical to the previous frame
+                    if duration:
+                        previous["encoderinfo"]["duration"] += encoderinfo["duration"]
+                    continue
+            else:
+                bbox = None
+            im_frames.append({"im": im_frame, "bbox": bbox, "encoderinfo": encoderinfo})
+
+    if len(im_frames) > 1:
+        for frame_data in im_frames:
+            im_frame = frame_data["im"]
+            if not frame_data["bbox"]:
+                # global header
+                for s in _get_global_header(im_frame, frame_data["encoderinfo"]):
+                    fp.write(s)
+                offset = (0, 0)
+            else:
+                # compress difference
+                frame_data["encoderinfo"]["include_color_table"] = True
+
+                im_frame = im_frame.crop(frame_data["bbox"])
+                offset = frame_data["bbox"][:2]
+            _write_frame_data(fp, im_frame, offset, frame_data["encoderinfo"])
+        return True
+    elif "duration" in im.encoderinfo and isinstance(
+        im.encoderinfo["duration"], (list, tuple)
+    ):
+        # Since multiple frames will not be written, add together the frame durations
+        im.encoderinfo["duration"] = sum(im.encoderinfo["duration"])
+
+
+def _save_all(im, fp, filename):
+    _save(im, fp, filename, save_all=True)
+
+
+def _save(im, fp, filename, save_all=False):
+    # header
+    if "palette" in im.encoderinfo or "palette" in im.info:
+        palette = im.encoderinfo.get("palette", im.info.get("palette"))
+    else:
+        palette = None
+        im.encoderinfo["optimize"] = im.encoderinfo.get("optimize", True)
+
+    if not save_all or not _write_multiple_frames(im, fp, palette):
+        _write_single_frame(im, fp, palette)
+
+    fp.write(b";")  # end of file
+
+    if hasattr(fp, "flush"):
+        fp.flush()
+
+
+def get_interlace(im):
+    interlace = im.encoderinfo.get("interlace", 1)
+
+    # workaround for @PIL153
+    if min(im.size) < 16:
+        interlace = 0
+
+    return interlace
+
+
+def _write_local_header(fp, im, offset, flags):
+    transparent_color_exists = False
+    try:
+        transparency = im.encoderinfo["transparency"]
+    except KeyError:
+        pass
+    else:
+        transparency = int(transparency)
+        # optimize the block away if transparent color is not used
+        transparent_color_exists = True
+
+        used_palette_colors = _get_optimize(im, im.encoderinfo)
+        if used_palette_colors is not None:
+            # adjust the transparency index after optimize
+            try:
+                transparency = used_palette_colors.index(transparency)
+            except ValueError:
+                transparent_color_exists = False
+
+    if "duration" in im.encoderinfo:
+        duration = int(im.encoderinfo["duration"] / 10)
+    else:
+        duration = 0
+
+    disposal = int(im.encoderinfo.get("disposal", 0))
+
+    if transparent_color_exists or duration != 0 or disposal:
+        packed_flag = 1 if transparent_color_exists else 0
+        packed_flag |= disposal << 2
+        if not transparent_color_exists:
+            transparency = 0
+
+        fp.write(
+            b"!"
+            + o8(249)  # extension intro
+            + o8(4)  # length
+            + o8(packed_flag)  # packed fields
+            + o16(duration)  # duration
+            + o8(transparency)  # transparency index
+            + o8(0)
+        )
+
+    if "comment" in im.encoderinfo and 1 <= len(im.encoderinfo["comment"]):
+        fp.write(b"!" + o8(254))  # extension intro
+        comment = im.encoderinfo["comment"]
+        if isinstance(comment, str):
+            comment = comment.encode()
+        for i in range(0, len(comment), 255):
+            subblock = comment[i : i + 255]
+            fp.write(o8(len(subblock)) + subblock)
+        fp.write(o8(0))
+    if "loop" in im.encoderinfo:
+        number_of_loops = im.encoderinfo["loop"]
+        fp.write(
+            b"!"
+            + o8(255)  # extension intro
+            + o8(11)
+            + b"NETSCAPE2.0"
+            + o8(3)
+            + o8(1)
+            + o16(number_of_loops)  # number of loops
+            + o8(0)
+        )
+    include_color_table = im.encoderinfo.get("include_color_table")
+    if include_color_table:
+        palette_bytes = _get_palette_bytes(im)
+        color_table_size = _get_color_table_size(palette_bytes)
+        if color_table_size:
+            flags = flags | 128  # local color table flag
+            flags = flags | color_table_size
+
+    fp.write(
+        b","
+        + o16(offset[0])  # offset
+        + o16(offset[1])
+        + o16(im.size[0])  # size
+        + o16(im.size[1])
+        + o8(flags)  # flags
+    )
+    if include_color_table and color_table_size:
+        fp.write(_get_header_palette(palette_bytes))
+    fp.write(o8(8))  # bits
+
+
+def _save_netpbm(im, fp, filename):
+
+    # Unused by default.
+    # To use, uncomment the register_save call at the end of the file.
+    #
+    # If you need real GIF compression and/or RGB quantization, you
+    # can use the external NETPBM/PBMPLUS utilities.  See comments
+    # below for information on how to enable this.
+    tempfile = im._dump()
+
+    try:
+        with open(filename, "wb") as f:
+            if im.mode != "RGB":
+                subprocess.check_call(
+                    ["ppmtogif", tempfile], stdout=f, stderr=subprocess.DEVNULL
+                )
+            else:
+                # Pipe ppmquant output into ppmtogif
+                # "ppmquant 256 %s | ppmtogif > %s" % (tempfile, filename)
+                quant_cmd = ["ppmquant", "256", tempfile]
+                togif_cmd = ["ppmtogif"]
+                quant_proc = subprocess.Popen(
+                    quant_cmd, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL
+                )
+                togif_proc = subprocess.Popen(
+                    togif_cmd,
+                    stdin=quant_proc.stdout,
+                    stdout=f,
+                    stderr=subprocess.DEVNULL,
+                )
+
+                # Allow ppmquant to receive SIGPIPE if ppmtogif exits
+                quant_proc.stdout.close()
+
+                retcode = quant_proc.wait()
+                if retcode:
+                    raise subprocess.CalledProcessError(retcode, quant_cmd)
+
+                retcode = togif_proc.wait()
+                if retcode:
+                    raise subprocess.CalledProcessError(retcode, togif_cmd)
+    finally:
+        try:
+            os.unlink(tempfile)
+        except OSError:
+            pass
+
+
+# Force optimization so that we can test performance against
+# cases where it took lots of memory and time previously.
+_FORCE_OPTIMIZE = False
+
+
+def _get_optimize(im, info):
+    """
+    Palette optimization is a potentially expensive operation.
+
+    This function determines if the palette should be optimized using
+    some heuristics, then returns the list of palette entries in use.
+
+    :param im: Image object
+    :param info: encoderinfo
+    :returns: list of indexes of palette entries in use, or None
+    """
+    if im.mode in ("P", "L") and info and info.get("optimize", 0):
+        # Potentially expensive operation.
+
+        # The palette saves 3 bytes per color not used, but palette
+        # lengths are restricted to 3*(2**N) bytes. Max saving would
+        # be 768 -> 6 bytes if we went all the way down to 2 colors.
+        # * If we're over 128 colors, we can't save any space.
+        # * If there aren't any holes, it's not worth collapsing.
+        # * If we have a 'large' image, the palette is in the noise.
+
+        # create the new palette if not every color is used
+        optimise = _FORCE_OPTIMIZE or im.mode == "L"
+        if optimise or im.width * im.height < 512 * 512:
+            # check which colors are used
+            used_palette_colors = []
+            for i, count in enumerate(im.histogram()):
+                if count:
+                    used_palette_colors.append(i)
+
+            if optimise or (
+                len(used_palette_colors) <= 128
+                and max(used_palette_colors) > len(used_palette_colors)
+            ):
+                return used_palette_colors
+
+
+def _get_color_table_size(palette_bytes):
+    # calculate the palette size for the header
+    if not palette_bytes:
+        return 0
+    elif len(palette_bytes) < 9:
+        return 1
+    else:
+        return math.ceil(math.log(len(palette_bytes) // 3, 2)) - 1
+
+
+def _get_header_palette(palette_bytes):
+    """
+    Returns the palette, null padded to the next power of 2 (*3) bytes
+    suitable for direct inclusion in the GIF header
+
+    :param palette_bytes: Unpadded palette bytes, in RGBRGB form
+    :returns: Null padded palette
+    """
+    color_table_size = _get_color_table_size(palette_bytes)
+
+    # add the missing amount of bytes
+    # the palette has to be 2<<n in size
+    actual_target_size_diff = (2 << color_table_size) - len(palette_bytes) // 3
+    if actual_target_size_diff > 0:
+        palette_bytes += o8(0) * 3 * actual_target_size_diff
+    return palette_bytes
+
+
+def _get_palette_bytes(im):
+    """
+    Gets the palette for inclusion in the gif header
+
+    :param im: Image object
+    :returns: Bytes, len<=768 suitable for inclusion in gif header
+    """
+    return im.palette.palette
+
+
+def _get_background(im, infoBackground):
+    background = 0
+    if infoBackground:
+        background = infoBackground
+        if isinstance(background, tuple):
+            # WebPImagePlugin stores an RGBA value in info["background"]
+            # So it must be converted to the same format as GifImagePlugin's
+            # info["background"] - a global color table index
+            background = im.palette.getcolor(background)
+    return background
+
+
+def _get_global_header(im, info):
+    """Return a list of strings representing a GIF header"""
+
+    # Header Block
+    # http://www.matthewflickinger.com/lab/whatsinagif/bits_and_bytes.asp
+
+    version = b"87a"
+    for extensionKey in ["transparency", "duration", "loop", "comment"]:
+        if info and extensionKey in info:
+            if (extensionKey == "duration" and info[extensionKey] == 0) or (
+                extensionKey == "comment" and not (1 <= len(info[extensionKey]) <= 255)
+            ):
+                continue
+            version = b"89a"
+            break
+    else:
+        if im.info.get("version") == b"89a":
+            version = b"89a"
+
+    background = _get_background(im, info.get("background"))
+
+    palette_bytes = _get_palette_bytes(im)
+    color_table_size = _get_color_table_size(palette_bytes)
+
+    return [
+        b"GIF"  # signature
+        + version  # version
+        + o16(im.size[0])  # canvas width
+        + o16(im.size[1]),  # canvas height
+        # Logical Screen Descriptor
+        # size of global color table + global color table flag
+        o8(color_table_size + 128),  # packed fields
+        # background + reserved/aspect
+        o8(background) + o8(0),
+        # Global Color Table
+        _get_header_palette(palette_bytes),
+    ]
+
+
+def _write_frame_data(fp, im_frame, offset, params):
+    try:
+        im_frame.encoderinfo = params
+
+        # local image header
+        _write_local_header(fp, im_frame, offset, 0)
+
+        ImageFile._save(
+            im_frame, fp, [("gif", (0, 0) + im_frame.size, 0, RAWMODE[im_frame.mode])]
+        )
+
+        fp.write(b"\0")  # end of image data
+    finally:
+        del im_frame.encoderinfo
+
+
+# --------------------------------------------------------------------
+# Legacy GIF utilities
+
+
+def getheader(im, palette=None, info=None):
+    """
+    Legacy Method to get Gif data from image.
+
+    Warning:: May modify image data.
+
+    :param im: Image object
+    :param palette: bytes object containing the source palette, or ....
+    :param info: encoderinfo
+    :returns: tuple of(list of header items, optimized palette)
+
+    """
+    used_palette_colors = _get_optimize(im, info)
+
+    if info is None:
+        info = {}
+
+    if "background" not in info and "background" in im.info:
+        info["background"] = im.info["background"]
+
+    im_mod = _normalize_palette(im, palette, info)
+    im.palette = im_mod.palette
+    im.im = im_mod.im
+    header = _get_global_header(im, info)
+
+    return header, used_palette_colors
+
+
+# To specify duration, add the time in milliseconds to getdata(),
+# e.g. getdata(im_frame, duration=1000)
+def getdata(im, offset=(0, 0), **params):
+    """
+    Legacy Method
+
+    Return a list of strings representing this image.
+    The first string is a local image header, the rest contains
+    encoded image data.
+
+    :param im: Image object
+    :param offset: Tuple of (x, y) pixels. Defaults to (0,0)
+    :param \\**params: E.g. duration or other encoder info parameters
+    :returns: List of Bytes containing gif encoded frame data
+
+    """
+
+    class Collector:
+        data = []
+
+        def write(self, data):
+            self.data.append(data)
+
+    im.load()  # make sure raster data is available
+
+    fp = Collector()
+
+    _write_frame_data(fp, im, offset, params)
+
+    return fp.data
+
+
+# --------------------------------------------------------------------
+# Registry
+
+Image.register_open(GifImageFile.format, GifImageFile, _accept)
+Image.register_save(GifImageFile.format, _save)
+Image.register_save_all(GifImageFile.format, _save_all)
+Image.register_extension(GifImageFile.format, ".gif")
+Image.register_mime(GifImageFile.format, "image/gif")
+
+#
+# Uncomment the following line if you wish to use NETPBM/PBMPLUS
+# instead of the built-in "uncompressed" GIF encoder
+
+# Image.register_save(GifImageFile.format, _save_netpbm)

django/lib/python3.6/site-packages/PIL/GimpGradientFile.py

@@ -0,0 +1,140 @@
+#
+# 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":
+            raise SyntaxError("not a GIMP gradient file")
+
+        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:
+                raise OSError("cannot handle HSV colour space")
+
+            gradient.append((x0, x1, xm, rgb0, rgb1, segment))
+
+        self.gradient = gradient

django/lib/python3.6/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":
+            raise SyntaxError("not a GIMP palette file")
+
+        for i in range(256):
+
+            s = fp.readline()
+            if not s:
+                break
+
+            # skip fields and comment lines
+            if re.match(br"\w+:|#", s):
+                continue
+            if len(s) > 100:
+                raise SyntaxError("bad palette file")
+
+            v = tuple(map(int, s.split()[:3]))
+            if len(v) != 3:
+                raise ValueError("bad palette entry")
+
+            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

django/lib/python3.6/site-packages/PIL/GribStubImagePlugin.py

@@ -0,0 +1,74 @@
+#
+# 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
+from ._binary import i8
+
+_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[0:4] == b"GRIB" and i8(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)):
+            raise SyntaxError("Not a GRIB file")
+
+        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"):
+        raise OSError("GRIB save handler not installed")
+    _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")

django/lib/python3.6/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)):
+            raise SyntaxError("Not an HDF file")
+
+        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"):
+        raise OSError("HDF5 save handler not installed")
+    _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"])

django/lib/python3.6/site-packages/PIL/IcnsImagePlugin.py

@@ -0,0 +1,384 @@
+#
+# 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.
+#
+# Copyright (c) 2004 by Bob Ippolito.
+# Copyright (c) 2004 by Secret Labs.
+# Copyright (c) 2004 by Fredrik Lundh.
+# Copyright (c) 2014 by Alastair Houghton.
+#
+# See the README file for information on usage and redistribution.
+#
+
+import io
+import os
+import shutil
+import struct
+import subprocess
+import sys
+import tempfile
+
+from PIL import Image, ImageFile, PngImagePlugin, features
+from PIL._binary import i8
+
+enable_jpeg2k = features.check_codec("jpg_2000")
+if enable_jpeg2k:
+    from PIL import Jpeg2KImagePlugin
+
+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":
+        raise SyntaxError("Unknown signature, expecting 0x00000000")
+    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 = i8(byte)
+                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:
+                raise SyntaxError("Error reading channel [%r left]" % bytesleft)
+            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)
+        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:
+            raise ValueError(
+                "Unsupported icon subimage format (rebuild PIL "
+                "with JPEG 2000 support to fix this)"
+            )
+        # j2k, jpc or j2c
+        fobj.seek(start)
+        jp2kstream = fobj.read(length)
+        f = io.BytesIO(jp2kstream)
+        im = Jpeg2KImagePlugin.Jpeg2KImageFile(f)
+        if im.mode != "RGBA":
+            im = im.convert("RGBA")
+        return {"RGBA": im}
+    else:
+        raise ValueError("Unsupported icon subimage format")
+
+
+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 sig != b"icns":
+            raise SyntaxError("not an icns file")
+        i = HEADERSIZE
+        while i < filesize:
+            sig, blocksize = nextheader(fobj)
+            if blocksize <= 0:
+                raise SyntaxError("invalid block header")
+            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:
+            raise SyntaxError("No 32bit icon resources found")
+        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"]:
+            raise ValueError("This is not one of the allowed sizes of this image")
+        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],
+            )
+
+        Image.Image.load(self)
+        if self.im and self.im.size == self.size:
+            # Already loaded
+            return
+        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
+        im.load()
+
+        self.im = im.im
+        self.mode = im.mode
+        self.size = im.size
+        self.load_end()
+
+
+def _save(im, fp, filename):
+    """
+    Saves the image as a series of PNG files,
+    that are then converted to a .icns file
+    using the macOS command line utility 'iconutil'.
+
+    macOS only.
+    """
+    if hasattr(fp, "flush"):
+        fp.flush()
+
+    # create the temporary set of pngs
+    with tempfile.TemporaryDirectory(".iconset") as iconset:
+        provided_images = {
+            im.width: im for im in im.encoderinfo.get("append_images", [])
+        }
+        last_w = None
+        second_path = None
+        for w in [16, 32, 128, 256, 512]:
+            prefix = "icon_{}x{}".format(w, w)
+
+            first_path = os.path.join(iconset, prefix + ".png")
+            if last_w == w:
+                shutil.copyfile(second_path, first_path)
+            else:
+                im_w = provided_images.get(w, im.resize((w, w), Image.LANCZOS))
+                im_w.save(first_path)
+
+            second_path = os.path.join(iconset, prefix + "@2x.png")
+            im_w2 = provided_images.get(w * 2, im.resize((w * 2, w * 2), Image.LANCZOS))
+            im_w2.save(second_path)
+            last_w = w * 2
+
+        # iconutil -c icns -o {} {}
+
+        fp_only = not filename
+        if fp_only:
+            f, filename = tempfile.mkstemp(".icns")
+            os.close(f)
+        convert_cmd = ["iconutil", "-c", "icns", "-o", filename, iconset]
+        convert_proc = subprocess.Popen(
+            convert_cmd, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL
+        )
+
+        convert_proc.stdout.close()
+
+        retcode = convert_proc.wait()
+
+        if retcode:
+            raise subprocess.CalledProcessError(retcode, convert_cmd)
+
+        if fp_only:
+            with open(filename, "rb") as f:
+                fp.write(f.read())
+
+
+Image.register_open(IcnsImageFile.format, IcnsImageFile, lambda x: x[:4] == b"icns")
+Image.register_extension(IcnsImageFile.format, ".icns")
+
+if sys.platform == "darwin":
+    Image.register_save(IcnsImageFile.format, _save)
+
+    Image.register_mime(IcnsImageFile.format, "image/icns")
+
+
+if __name__ == "__main__":
+
+    if len(sys.argv) < 2:
+        print("Syntax: python 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")

django/lib/python3.6/site-packages/PIL/IcoImagePlugin.py

@@ -0,0 +1,324 @@
+#
+# 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 struct
+import warnings
+from io import BytesIO
+from math import ceil, log
+
+from . import BmpImagePlugin, Image, ImageFile, PngImagePlugin
+from ._binary import i8, i16le as i16, i32le as i32
+
+#
+# --------------------------------------------------------------------
+
+_MAGIC = b"\0\0\1\0"
+
+
+def _save(im, fp, filename):
+    fp.write(_MAGIC)  # (2+2)
+    sizes = im.encoderinfo.get(
+        "sizes",
+        [(16, 16), (24, 24), (32, 32), (48, 48), (64, 64), (128, 128), (256, 256)],
+    )
+    width, height = im.size
+    sizes = filter(
+        lambda x: False
+        if (x[0] > width or x[1] > height or x[0] > 256 or x[1] > 256)
+        else True,
+        sizes,
+    )
+    sizes = list(sizes)
+    fp.write(struct.pack("<H", len(sizes)))  # idCount(2)
+    offset = fp.tell() + len(sizes) * 16
+    for size in sizes:
+        width, height = size
+        # 0 means 256
+        fp.write(struct.pack("B", width if width < 256 else 0))  # bWidth(1)
+        fp.write(struct.pack("B", height if height < 256 else 0))  # bHeight(1)
+        fp.write(b"\0")  # bColorCount(1)
+        fp.write(b"\0")  # bReserved(1)
+        fp.write(b"\0\0")  # wPlanes(2)
+        fp.write(struct.pack("<H", 32))  # wBitCount(2)
+
+        image_io = BytesIO()
+        # TODO: invent a more convenient method for proportional scalings
+        tmp = im.copy()
+        tmp.thumbnail(size, Image.LANCZOS, reducing_gap=None)
+        tmp.save(image_io, "png")
+        image_io.seek(0)
+        image_bytes = image_io.read()
+        bytes_len = len(image_bytes)
+        fp.write(struct.pack("<I", bytes_len))  # dwBytesInRes(4)
+        fp.write(struct.pack("<I", 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):
+            raise SyntaxError("not an ICO file")
+
+        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": i8(s[0]),
+                "height": i8(s[1]),
+                "nb_color": i8(s[2]),  # No. of colors in image (0 if >=8bpp)
+                "reserved": i8(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)
+        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
+            mode = a[0]
+            bpp = 8
+            for k, v in BmpImagePlugin.BIT2MODE.items():
+                if mode == v[1]:
+                    bpp = k
+                    break
+
+            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
+
+                and_mask_offset = o + int(im.size[0] * im.size[1] * (bpp / 8.0))
+                total_bytes = int((w * im.size[1]) / 8)
+
+                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.
+
+    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"]:
+            raise ValueError("This is not one of the allowed sizes of this image")
+        self._size = value
+
+    def load(self):
+        if self.im and self.im.size == self.size:
+            # Already loaded
+            return
+        im = self.ico.getimage(self.size)
+        # if tile is PNG, it won't really be loaded yet
+        im.load()
+        self.im = im.im
+        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")

django/lib/python3.6/site-packages/PIL/ImImagePlugin.py

@@ -0,0 +1,377 @@
+#
+# 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
+from ._binary import i8
+
+# --------------------------------------------------------------------
+# 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["L %s image" % i] = ("F", "F;%s" % i)
+    OPEN["L*%s image" % i] = ("F", "F;%s" % i)
+for i in ["16", "16L", "16B"]:
+    OPEN["L %s image" % i] = ("I;%s" % i, "I;%s" % i)
+    OPEN["L*%s image" % i] = ("I;%s" % i, "I;%s" % i)
+for i in ["32S"]:
+    OPEN["L %s image" % i] = ("I", "I;%s" % i)
+    OPEN["L*%s image" % i] = ("I", "I;%s" % i)
+for i in range(2, 33):
+    OPEN["L*%s image" % i] = ("F", "F;%s" % i)
+
+
+# --------------------------------------------------------------------
+# Read IM directory
+
+split = re.compile(br"^([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):
+            raise SyntaxError("not an IM file")
+        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:
+                raise SyntaxError("not an IM file")
+
+            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:
+                raise SyntaxError("not an IM file") 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:
+
+                raise SyntaxError(
+                    "Syntax error in IM header: " + s.decode("ascii", "replace")
+                )
+
+        if not n:
+            raise SyntaxError("Not an IM file")
+
+        # Basic attributes
+        self._size = self.info[SIZE]
+        self.mode = self.info[MODE]
+
+        # Skip forward to start of image data
+        while s and s[0:1] != b"\x1A":
+            s = self.fp.read(1)
+        if not s:
+            raise SyntaxError("File truncated")
+
+        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 i8(palette[i]) != i:
+                        linear = 0
+                else:
+                    greyscale = 0
+            if self.mode in ["L", "LA", "P", "PA"]:
+                if greyscale:
+                    if not linear:
+                        self.lut = [i8(c) for c in 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 = [i8(c) for c in 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
+
+    def _close__fp(self):
+        try:
+            if self.__fp != self.fp:
+                self.__fp.close()
+        except AttributeError:
+            pass
+        finally:
+            self.__fp = None
+
+
+#
+# --------------------------------------------------------------------
+# 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:
+        raise ValueError("Cannot save %s images as IM" % im.mode) from e
+
+    frames = im.encoderinfo.get("frames", 1)
+
+    fp.write(("Image type: %s image\r\n" % image_type).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(("Name: %s\r\n" % name).encode("ascii"))
+    fp.write(("Image size (x*y): %d*%d\r\n" % im.size).encode("ascii"))
+    fp.write(("File size (no of images): %d\r\n" % frames).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"]:
+        fp.write(im.im.getpalette("RGB", "RGB;L"))  # 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")

django/lib/python3.6/site-packages/PIL/ImageChops.py

@@ -0,0 +1,328 @@
+#
+# 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).
+
+    .. code-block:: python
+
+        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.
+
+    .. code-block:: python
+
+        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.
+
+    .. code-block:: python
+
+        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.
+
+    .. code-block:: python
+
+        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.
+
+    .. code-block:: python
+
+        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.
+
+    .. code-block:: python
+
+        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.
+
+    .. code-block:: python
+
+        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.
+
+    .. code-block:: python
+
+        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.
+
+    .. code-block:: python
+
+        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.
+
+    .. code-block:: python
+
+        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.
+
+    .. code-block:: python
+
+        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".
+
+    .. code-block:: python
+
+        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".
+
+    .. code-block:: python
+
+        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:meth:`PIL.Image.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:meth:`PIL.Image.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 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))

django/lib/python3.6/site-packages/PIL/ImageCms.py

@@ -0,0 +1,990 @@
+# The Python Imaging Library.
+# $Id$
+
+# Optional color management support, based on Kevin Cazabon's PyCMS
+# library.
+
+# History:
+
+# 2009-03-08 fl   Added to PIL.
+
+# Copyright (C) 2002-2003 Kevin Cazabon
+# Copyright (c) 2009 by Fredrik Lundh
+# Copyright (c) 2013 by Eric Soroos
+
+# See the README file for information on usage and redistribution.  See
+# below for the original description.
+
+import sys
+
+from PIL import Image
+
+try:
+    from PIL import _imagingcms
+except ImportError as ex:
+    # Allow error import for doc purposes, but error out when accessing
+    # anything in core.
+    from ._util import deferred_error
+
+    _imagingcms = deferred_error(ex)
+
+DESCRIPTION = """
+pyCMS
+
+    a Python / PIL interface to the littleCMS ICC Color Management System
+    Copyright (C) 2002-2003 Kevin Cazabon
+    kevin@cazabon.com
+    http://www.cazabon.com
+
+    pyCMS home page:  http://www.cazabon.com/pyCMS
+    littleCMS home page:  http://www.littlecms.com
+    (littleCMS is Copyright (C) 1998-2001 Marti Maria)
+
+    Originally released under LGPL.  Graciously donated to PIL in
+    March 2009, for distribution under the standard PIL license
+
+    The pyCMS.py module provides a "clean" interface between Python/PIL and
+    pyCMSdll, taking care of some of the more complex handling of the direct
+    pyCMSdll functions, as well as error-checking and making sure that all
+    relevant data is kept together.
+
+    While it is possible to call pyCMSdll functions directly, it's not highly
+    recommended.
+
+    Version History:
+
+        1.0.0 pil       Oct 2013 Port to LCMS 2.
+
+        0.1.0 pil mod   March 10, 2009
+
+                        Renamed display profile to proof profile. The proof
+                        profile is the profile of the device that is being
+                        simulated, not the profile of the device which is
+                        actually used to display/print the final simulation
+                        (that'd be the output profile) - also see LCMSAPI.txt
+                        input colorspace -> using 'renderingIntent' -> proof
+                        colorspace -> using 'proofRenderingIntent' -> output
+                        colorspace
+
+                        Added LCMS FLAGS support.
+                        Added FLAGS["SOFTPROOFING"] as default flag for
+                        buildProofTransform (otherwise the proof profile/intent
+                        would be ignored).
+
+        0.1.0 pil       March 2009 - added to PIL, as PIL.ImageCms
+
+        0.0.2 alpha     Jan 6, 2002
+
+                        Added try/except statements around type() checks of
+                        potential CObjects... Python won't let you use type()
+                        on them, and raises a TypeError (stupid, if you ask
+                        me!)
+
+                        Added buildProofTransformFromOpenProfiles() function.
+                        Additional fixes in DLL, see DLL code for details.
+
+        0.0.1 alpha     first public release, Dec. 26, 2002
+
+    Known to-do list with current version (of Python interface, not pyCMSdll):
+
+        none
+
+"""
+
+VERSION = "1.0.0 pil"
+
+# --------------------------------------------------------------------.
+
+core = _imagingcms
+
+#
+# intent/direction values
+
+INTENT_PERCEPTUAL = 0
+INTENT_RELATIVE_COLORIMETRIC = 1
+INTENT_SATURATION = 2
+INTENT_ABSOLUTE_COLORIMETRIC = 3
+
+DIRECTION_INPUT = 0
+DIRECTION_OUTPUT = 1
+DIRECTION_PROOF = 2
+
+#
+# flags
+
+FLAGS = {
+    "MATRIXINPUT": 1,
+    "MATRIXOUTPUT": 2,
+    "MATRIXONLY": (1 | 2),
+    "NOWHITEONWHITEFIXUP": 4,  # Don't hot fix scum dot
+    # Don't create prelinearization tables on precalculated transforms
+    # (internal use):
+    "NOPRELINEARIZATION": 16,
+    "GUESSDEVICECLASS": 32,  # Guess device class (for transform2devicelink)
+    "NOTCACHE": 64,  # Inhibit 1-pixel cache
+    "NOTPRECALC": 256,
+    "NULLTRANSFORM": 512,  # Don't transform anyway
+    "HIGHRESPRECALC": 1024,  # Use more memory to give better accuracy
+    "LOWRESPRECALC": 2048,  # Use less memory to minimize resources
+    "WHITEBLACKCOMPENSATION": 8192,
+    "BLACKPOINTCOMPENSATION": 8192,
+    "GAMUTCHECK": 4096,  # Out of Gamut alarm
+    "SOFTPROOFING": 16384,  # Do softproofing
+    "PRESERVEBLACK": 32768,  # Black preservation
+    "NODEFAULTRESOURCEDEF": 16777216,  # CRD special
+    "GRIDPOINTS": lambda n: ((n) & 0xFF) << 16,  # Gridpoints
+}
+
+_MAX_FLAG = 0
+for flag in FLAGS.values():
+    if isinstance(flag, int):
+        _MAX_FLAG = _MAX_FLAG | flag
+
+
+# --------------------------------------------------------------------.
+# Experimental PIL-level API
+# --------------------------------------------------------------------.
+
+##
+# Profile.
+
+
+class ImageCmsProfile:
+    def __init__(self, profile):
+        """
+        :param profile: Either a string representing a filename,
+            a file like object containing a profile or a
+            low-level profile object
+
+        """
+
+        if isinstance(profile, str):
+            self._set(core.profile_open(profile), profile)
+        elif hasattr(profile, "read"):
+            self._set(core.profile_frombytes(profile.read()))
+        elif isinstance(profile, _imagingcms.CmsProfile):
+            self._set(profile)
+        else:
+            raise TypeError("Invalid type for Profile")
+
+    def _set(self, profile, filename=None):
+        self.profile = profile
+        self.filename = filename
+        if profile:
+            self.product_name = None  # profile.product_name
+            self.product_info = None  # profile.product_info
+        else:
+            self.product_name = None
+            self.product_info = None
+
+    def tobytes(self):
+        """
+        Returns the profile in a format suitable for embedding in
+        saved images.
+
+        :returns: a bytes object containing the ICC profile.
+        """
+
+        return core.profile_tobytes(self.profile)
+
+
+class ImageCmsTransform(Image.ImagePointHandler):
+
+    """
+    Transform.  This can be used with the procedural API, or with the standard
+    :py:func:`~PIL.Image.Image.point` method.
+
+    Will return the output profile in the ``output.info['icc_profile']``.
+    """
+
+    def __init__(
+        self,
+        input,
+        output,
+        input_mode,
+        output_mode,
+        intent=INTENT_PERCEPTUAL,
+        proof=None,
+        proof_intent=INTENT_ABSOLUTE_COLORIMETRIC,
+        flags=0,
+    ):
+        if proof is None:
+            self.transform = core.buildTransform(
+                input.profile, output.profile, input_mode, output_mode, intent, flags
+            )
+        else:
+            self.transform = core.buildProofTransform(
+                input.profile,
+                output.profile,
+                proof.profile,
+                input_mode,
+                output_mode,
+                intent,
+                proof_intent,
+                flags,
+            )
+        # Note: inputMode and outputMode are for pyCMS compatibility only
+        self.input_mode = self.inputMode = input_mode
+        self.output_mode = self.outputMode = output_mode
+
+        self.output_profile = output
+
+    def point(self, im):
+        return self.apply(im)
+
+    def apply(self, im, imOut=None):
+        im.load()
+        if imOut is None:
+            imOut = Image.new(self.output_mode, im.size, None)
+        self.transform.apply(im.im.id, imOut.im.id)
+        imOut.info["icc_profile"] = self.output_profile.tobytes()
+        return imOut
+
+    def apply_in_place(self, im):
+        im.load()
+        if im.mode != self.output_mode:
+            raise ValueError("mode mismatch")  # wrong output mode
+        self.transform.apply(im.im.id, im.im.id)
+        im.info["icc_profile"] = self.output_profile.tobytes()
+        return im
+
+
+def get_display_profile(handle=None):
+    """ (experimental) Fetches the profile for the current display device.
+    :returns: ``None`` if the profile is not known.
+    """
+
+    if sys.platform != "win32":
+        return None
+
+    from PIL import ImageWin
+
+    if isinstance(handle, ImageWin.HDC):
+        profile = core.get_display_profile_win32(handle, 1)
+    else:
+        profile = core.get_display_profile_win32(handle or 0)
+    if profile is None:
+        return None
+    return ImageCmsProfile(profile)
+
+
+# --------------------------------------------------------------------.
+# pyCMS compatible layer
+# --------------------------------------------------------------------.
+
+
+class PyCMSError(Exception):
+
+    """ (pyCMS) Exception class.
+    This is used for all errors in the pyCMS API. """
+
+    pass
+
+
+def profileToProfile(
+    im,
+    inputProfile,
+    outputProfile,
+    renderingIntent=INTENT_PERCEPTUAL,
+    outputMode=None,
+    inPlace=False,
+    flags=0,
+):
+    """
+    (pyCMS) Applies an ICC transformation to a given image, mapping from
+    ``inputProfile`` to ``outputProfile``.
+
+    If the input or output profiles specified are not valid filenames, a
+    :exc:`PyCMSError` will be raised.  If ``inPlace`` is ``True`` and
+    ``outputMode != im.mode``, a :exc:`PyCMSError` will be raised.
+    If an error occurs during application of the profiles,
+    a :exc:`PyCMSError` will be raised.
+    If ``outputMode`` is not a mode supported by the ``outputProfile`` (or by pyCMS),
+    a :exc:`PyCMSError` will be raised.
+
+    This function applies an ICC transformation to im from ``inputProfile``'s
+    color space to ``outputProfile``'s color space using the specified rendering
+    intent to decide how to handle out-of-gamut colors.
+
+    ``outputMode`` can be used to specify that a color mode conversion is to
+    be done using these profiles, but the specified profiles must be able
+    to handle that mode.  I.e., if converting im from RGB to CMYK using
+    profiles, the input profile must handle RGB data, and the output
+    profile must handle CMYK data.
+
+    :param im: An open :py:class:`~PIL.Image.Image` object (i.e. Image.new(...)
+        or Image.open(...), etc.)
+    :param inputProfile: String, as a valid filename path to the ICC input
+        profile you wish to use for this image, or a profile object
+    :param outputProfile: String, as a valid filename path to the ICC output
+        profile you wish to use for this image, or a profile object
+    :param renderingIntent: Integer (0-3) specifying the rendering intent you
+        wish to use for the transform
+
+            ImageCms.INTENT_PERCEPTUAL            = 0 (DEFAULT)
+            ImageCms.INTENT_RELATIVE_COLORIMETRIC = 1
+            ImageCms.INTENT_SATURATION            = 2
+            ImageCms.INTENT_ABSOLUTE_COLORIMETRIC = 3
+
+        see the pyCMS documentation for details on rendering intents and what
+        they do.
+    :param outputMode: A valid PIL mode for the output image (i.e. "RGB",
+        "CMYK", etc.).  Note: if rendering the image "inPlace", outputMode
+        MUST be the same mode as the input, or omitted completely.  If
+        omitted, the outputMode will be the same as the mode of the input
+        image (im.mode)
+    :param inPlace: Boolean.  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 transform applied.
+    :param flags: Integer (0-...) specifying additional flags
+    :returns: Either None or a new :py:class:`~PIL.Image.Image` object, depending on
+        the value of ``inPlace``
+    :exception PyCMSError:
+    """
+
+    if outputMode is None:
+        outputMode = im.mode
+
+    if not isinstance(renderingIntent, int) or not (0 <= renderingIntent <= 3):
+        raise PyCMSError("renderingIntent must be an integer between 0 and 3")
+
+    if not isinstance(flags, int) or not (0 <= flags <= _MAX_FLAG):
+        raise PyCMSError("flags must be an integer between 0 and %s" + _MAX_FLAG)
+
+    try:
+        if not isinstance(inputProfile, ImageCmsProfile):
+            inputProfile = ImageCmsProfile(inputProfile)
+        if not isinstance(outputProfile, ImageCmsProfile):
+            outputProfile = ImageCmsProfile(outputProfile)
+        transform = ImageCmsTransform(
+            inputProfile,
+            outputProfile,
+            im.mode,
+            outputMode,
+            renderingIntent,
+            flags=flags,
+        )
+        if inPlace:
+            transform.apply_in_place(im)
+            imOut = None
+        else:
+            imOut = transform.apply(im)
+    except (OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+    return imOut
+
+
+def getOpenProfile(profileFilename):
+    """
+    (pyCMS) Opens an ICC profile file.
+
+    The PyCMSProfile object can be passed back into pyCMS for use in creating
+    transforms and such (as in ImageCms.buildTransformFromOpenProfiles()).
+
+    If ``profileFilename`` is not a valid filename for an ICC profile,
+    a :exc:`PyCMSError` will be raised.
+
+    :param profileFilename: String, as a valid filename path to the ICC profile
+        you wish to open, or a file-like object.
+    :returns: A CmsProfile class object.
+    :exception PyCMSError:
+    """
+
+    try:
+        return ImageCmsProfile(profileFilename)
+    except (OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+def buildTransform(
+    inputProfile,
+    outputProfile,
+    inMode,
+    outMode,
+    renderingIntent=INTENT_PERCEPTUAL,
+    flags=0,
+):
+    """
+    (pyCMS) Builds an ICC transform mapping from the ``inputProfile`` to the
+    ``outputProfile``. Use applyTransform to apply the transform to a given
+    image.
+
+    If the input or output profiles specified are not valid filenames, a
+    :exc:`PyCMSError` will be raised. If an error occurs during creation
+    of the transform, a :exc:`PyCMSError` will be raised.
+
+    If ``inMode`` or ``outMode`` are not a mode supported by the ``outputProfile``
+    (or by pyCMS), a :exc:`PyCMSError` will be raised.
+
+    This function builds and returns an ICC transform from the ``inputProfile``
+    to the ``outputProfile`` using the ``renderingIntent`` to determine what to do
+    with out-of-gamut colors.  It will ONLY work for converting images that
+    are in ``inMode`` to images that are in ``outMode`` color format (PIL mode,
+    i.e. "RGB", "RGBA", "CMYK", etc.).
+
+    Building the transform is a fair part of the overhead in
+    ImageCms.profileToProfile(), so if you're planning on converting multiple
+    images using the same input/output settings, this can save you time.
+    Once you have a transform object, it can be used with
+    ImageCms.applyProfile() to convert images without the need to re-compute
+    the lookup table for the transform.
+
+    The reason pyCMS returns a class object rather than a handle directly
+    to the transform is that it needs to keep track of the PIL input/output
+    modes that the transform is meant for.  These attributes are stored in
+    the ``inMode`` and ``outMode`` attributes of the object (which can be
+    manually overridden if you really want to, but I don't know of any
+    time that would be of use, or would even work).
+
+    :param inputProfile: String, as a valid filename path to the ICC input
+        profile you wish to use for this transform, or a profile object
+    :param outputProfile: String, as a valid filename path to the ICC output
+        profile you wish to use for this transform, or a profile object
+    :param inMode: String, as a valid PIL mode that the appropriate profile
+        also supports (i.e. "RGB", "RGBA", "CMYK", etc.)
+    :param outMode: String, as a valid PIL mode that the appropriate profile
+        also supports (i.e. "RGB", "RGBA", "CMYK", etc.)
+    :param renderingIntent: Integer (0-3) specifying the rendering intent you
+        wish to use for the transform
+
+            ImageCms.INTENT_PERCEPTUAL            = 0 (DEFAULT)
+            ImageCms.INTENT_RELATIVE_COLORIMETRIC = 1
+            ImageCms.INTENT_SATURATION            = 2
+            ImageCms.INTENT_ABSOLUTE_COLORIMETRIC = 3
+
+        see the pyCMS documentation for details on rendering intents and what
+        they do.
+    :param flags: Integer (0-...) specifying additional flags
+    :returns: A CmsTransform class object.
+    :exception PyCMSError:
+    """
+
+    if not isinstance(renderingIntent, int) or not (0 <= renderingIntent <= 3):
+        raise PyCMSError("renderingIntent must be an integer between 0 and 3")
+
+    if not isinstance(flags, int) or not (0 <= flags <= _MAX_FLAG):
+        raise PyCMSError("flags must be an integer between 0 and %s" + _MAX_FLAG)
+
+    try:
+        if not isinstance(inputProfile, ImageCmsProfile):
+            inputProfile = ImageCmsProfile(inputProfile)
+        if not isinstance(outputProfile, ImageCmsProfile):
+            outputProfile = ImageCmsProfile(outputProfile)
+        return ImageCmsTransform(
+            inputProfile, outputProfile, inMode, outMode, renderingIntent, flags=flags
+        )
+    except (OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+def buildProofTransform(
+    inputProfile,
+    outputProfile,
+    proofProfile,
+    inMode,
+    outMode,
+    renderingIntent=INTENT_PERCEPTUAL,
+    proofRenderingIntent=INTENT_ABSOLUTE_COLORIMETRIC,
+    flags=FLAGS["SOFTPROOFING"],
+):
+    """
+    (pyCMS) Builds an ICC transform mapping from the ``inputProfile`` to the
+    ``outputProfile``, but tries to simulate the result that would be
+    obtained on the ``proofProfile`` device.
+
+    If the input, output, or proof profiles specified are not valid
+    filenames, a :exc:`PyCMSError` will be raised.
+
+    If an error occurs during creation of the transform,
+    a :exc:`PyCMSError` will be raised.
+
+    If ``inMode`` or ``outMode`` are not a mode supported by the ``outputProfile``
+    (or by pyCMS), a :exc:`PyCMSError` will be raised.
+
+    This function builds and returns an ICC transform from the ``inputProfile``
+    to the ``outputProfile``, but tries to simulate the result that would be
+    obtained on the ``proofProfile`` device using ``renderingIntent`` and
+    ``proofRenderingIntent`` to determine what to do with out-of-gamut
+    colors.  This is known as "soft-proofing".  It will ONLY work for
+    converting images that are in ``inMode`` to images that are in outMode
+    color format (PIL mode, i.e. "RGB", "RGBA", "CMYK", etc.).
+
+    Usage of the resulting transform object is exactly the same as with
+    ImageCms.buildTransform().
+
+    Proof profiling is generally used when using an output device to get a
+    good idea of what the final printed/displayed image would look like on
+    the ``proofProfile`` device when it's quicker and easier to use the
+    output device for judging color.  Generally, this means that the
+    output device is a monitor, or a dye-sub printer (etc.), and the simulated
+    device is something more expensive, complicated, or time consuming
+    (making it difficult to make a real print for color judgement purposes).
+
+    Soft-proofing basically functions by adjusting the colors on the
+    output device to match the colors of the device being simulated. However,
+    when the simulated device has a much wider gamut than the output
+    device, you may obtain marginal results.
+
+    :param inputProfile: String, as a valid filename path to the ICC input
+        profile you wish to use for this transform, or a profile object
+    :param outputProfile: String, as a valid filename path to the ICC output
+        (monitor, usually) profile you wish to use for this transform, or a
+        profile object
+    :param proofProfile: String, as a valid filename path to the ICC proof
+        profile you wish to use for this transform, or a profile object
+    :param inMode: String, as a valid PIL mode that the appropriate profile
+        also supports (i.e. "RGB", "RGBA", "CMYK", etc.)
+    :param outMode: String, as a valid PIL mode that the appropriate profile
+        also supports (i.e. "RGB", "RGBA", "CMYK", etc.)
+    :param renderingIntent: Integer (0-3) specifying the rendering intent you
+        wish to use for the input->proof (simulated) transform
+
+            ImageCms.INTENT_PERCEPTUAL            = 0 (DEFAULT)
+            ImageCms.INTENT_RELATIVE_COLORIMETRIC = 1
+            ImageCms.INTENT_SATURATION            = 2
+            ImageCms.INTENT_ABSOLUTE_COLORIMETRIC = 3
+
+        see the pyCMS documentation for details on rendering intents and what
+        they do.
+    :param proofRenderingIntent: Integer (0-3) specifying the rendering intent
+        you wish to use for proof->output transform
+
+            ImageCms.INTENT_PERCEPTUAL            = 0 (DEFAULT)
+            ImageCms.INTENT_RELATIVE_COLORIMETRIC = 1
+            ImageCms.INTENT_SATURATION            = 2
+            ImageCms.INTENT_ABSOLUTE_COLORIMETRIC = 3
+
+        see the pyCMS documentation for details on rendering intents and what
+        they do.
+    :param flags: Integer (0-...) specifying additional flags
+    :returns: A CmsTransform class object.
+    :exception PyCMSError:
+    """
+
+    if not isinstance(renderingIntent, int) or not (0 <= renderingIntent <= 3):
+        raise PyCMSError("renderingIntent must be an integer between 0 and 3")
+
+    if not isinstance(flags, int) or not (0 <= flags <= _MAX_FLAG):
+        raise PyCMSError("flags must be an integer between 0 and %s" + _MAX_FLAG)
+
+    try:
+        if not isinstance(inputProfile, ImageCmsProfile):
+            inputProfile = ImageCmsProfile(inputProfile)
+        if not isinstance(outputProfile, ImageCmsProfile):
+            outputProfile = ImageCmsProfile(outputProfile)
+        if not isinstance(proofProfile, ImageCmsProfile):
+            proofProfile = ImageCmsProfile(proofProfile)
+        return ImageCmsTransform(
+            inputProfile,
+            outputProfile,
+            inMode,
+            outMode,
+            renderingIntent,
+            proofProfile,
+            proofRenderingIntent,
+            flags,
+        )
+    except (OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+buildTransformFromOpenProfiles = buildTransform
+buildProofTransformFromOpenProfiles = buildProofTransform
+
+
+def applyTransform(im, transform, inPlace=False):
+    """
+    (pyCMS) Applies a transform to a given image.
+
+    If ``im.mode != transform.inMode``, a :exc:`PyCMSError` is raised.
+
+    If ``inPlace`` is ``True`` and ``transform.inMode != transform.outMode``, a
+    :exc:`PyCMSError` is raised.
+
+    If ``im.mode``, ``transform.inMode`` or ``transform.outMode`` is not
+    supported by pyCMSdll or the profiles you used for the transform, a
+    :exc:`PyCMSError` is raised.
+
+    If an error occurs while the transform is being applied,
+    a :exc:`PyCMSError` is raised.
+
+    This function applies a pre-calculated transform (from
+    ImageCms.buildTransform() or ImageCms.buildTransformFromOpenProfiles())
+    to an image. The transform can be used for multiple images, saving
+    considerable calculation time if doing the same conversion multiple times.
+
+    If you want to modify im in-place instead of receiving a new image as
+    the return value, set ``inPlace`` to ``True``.  This can only be done if
+    ``transform.inMode`` and ``transform.outMode`` are the same, because we can't
+    change the mode in-place (the buffer sizes for some modes are
+    different).  The default behavior is to return a new :py:class:`~PIL.Image.Image`
+    object of the same dimensions in mode ``transform.outMode``.
+
+    :param im: An :py:class:`~PIL.Image.Image` object, and im.mode must be the same
+        as the ``inMode`` supported by the transform.
+    :param transform: A valid CmsTransform class object
+    :param inPlace: Bool.  If ``True``, ``im` is modified in place and ``None`` is
+        returned, if ``False``, a new :py:class:`~PIL.Image.Image` object with the
+        transform applied is returned (and ``im`` is not changed). The default is
+        ``False``.
+    :returns: Either ``None``, or a new :py:class:`~PIL.Image.Image` object,
+        depending on the value of ``inPlace``. The profile will be returned in
+        the image's ``info['icc_profile']``.
+    :exception PyCMSError:
+    """
+
+    try:
+        if inPlace:
+            transform.apply_in_place(im)
+            imOut = None
+        else:
+            imOut = transform.apply(im)
+    except (TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+    return imOut
+
+
+def createProfile(colorSpace, colorTemp=-1):
+    """
+    (pyCMS) Creates a profile.
+
+    If colorSpace not in ``["LAB", "XYZ", "sRGB"]``,
+    a :exc:`PyCMSError` is raised.
+
+    If using LAB and ``colorTemp`` is not a positive integer,
+    a :exc:`PyCMSError` is raised.
+
+    If an error occurs while creating the profile,
+    a :exc:`PyCMSError` is raised.
+
+    Use this function to create common profiles on-the-fly instead of
+    having to supply a profile on disk and knowing the path to it.  It
+    returns a normal CmsProfile object that can be passed to
+    ImageCms.buildTransformFromOpenProfiles() to create a transform to apply
+    to images.
+
+    :param colorSpace: String, the color space of the profile you wish to
+        create.
+        Currently only "LAB", "XYZ", and "sRGB" are supported.
+    :param colorTemp: Positive integer for the white point for the profile, in
+        degrees Kelvin (i.e. 5000, 6500, 9600, etc.).  The default is for D50
+        illuminant if omitted (5000k).  colorTemp is ONLY applied to LAB
+        profiles, and is ignored for XYZ and sRGB.
+    :returns: A CmsProfile class object
+    :exception PyCMSError:
+    """
+
+    if colorSpace not in ["LAB", "XYZ", "sRGB"]:
+        raise PyCMSError(
+            "Color space not supported for on-the-fly profile creation (%s)"
+            % colorSpace
+        )
+
+    if colorSpace == "LAB":
+        try:
+            colorTemp = float(colorTemp)
+        except (TypeError, ValueError) as e:
+            raise PyCMSError(
+                'Color temperature must be numeric, "%s" not valid' % colorTemp
+            ) from e
+
+    try:
+        return core.createProfile(colorSpace, colorTemp)
+    except (TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+def getProfileName(profile):
+    """
+
+    (pyCMS) Gets the internal product name for the given profile.
+
+    If ``profile`` isn't a valid CmsProfile object or filename to a profile,
+    a :exc:`PyCMSError` is raised If an error occurs while trying
+    to obtain the name tag, a :exc:`PyCMSError` is raised.
+
+    Use this function to obtain the INTERNAL name of the profile (stored
+    in an ICC tag in the profile itself), usually the one used when the
+    profile was originally created.  Sometimes this tag also contains
+    additional information supplied by the creator.
+
+    :param profile: EITHER a valid CmsProfile object, OR a string of the
+        filename of an ICC profile.
+    :returns: A string containing the internal name of the profile as stored
+        in an ICC tag.
+    :exception PyCMSError:
+    """
+
+    try:
+        # add an extra newline to preserve pyCMS compatibility
+        if not isinstance(profile, ImageCmsProfile):
+            profile = ImageCmsProfile(profile)
+        # do it in python, not c.
+        #    // name was "%s - %s" (model, manufacturer) || Description ,
+        #    // but if the Model and Manufacturer were the same or the model
+        #    // was long, Just the model,  in 1.x
+        model = profile.profile.model
+        manufacturer = profile.profile.manufacturer
+
+        if not (model or manufacturer):
+            return (profile.profile.profile_description or "") + "\n"
+        if not manufacturer or len(model) > 30:
+            return model + "\n"
+        return "{} - {}\n".format(model, manufacturer)
+
+    except (AttributeError, OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+def getProfileInfo(profile):
+    """
+    (pyCMS) Gets the internal product information for the given profile.
+
+    If ``profile`` isn't a valid CmsProfile object or filename to a profile,
+    a :exc:`PyCMSError` is raised.
+
+    If an error occurs while trying to obtain the info tag,
+    a :exc:`PyCMSError` is raised.
+
+    Use this function to obtain the information stored in the profile's
+    info tag.  This often contains details about the profile, and how it
+    was created, as supplied by the creator.
+
+    :param profile: EITHER a valid CmsProfile object, OR a string of the
+        filename of an ICC profile.
+    :returns: A string containing the internal profile information stored in
+        an ICC tag.
+    :exception PyCMSError:
+    """
+
+    try:
+        if not isinstance(profile, ImageCmsProfile):
+            profile = ImageCmsProfile(profile)
+        # add an extra newline to preserve pyCMS compatibility
+        # Python, not C. the white point bits weren't working well,
+        # so skipping.
+        # info was description \r\n\r\n copyright \r\n\r\n K007 tag \r\n\r\n whitepoint
+        description = profile.profile.profile_description
+        cpright = profile.profile.copyright
+        arr = []
+        for elt in (description, cpright):
+            if elt:
+                arr.append(elt)
+        return "\r\n\r\n".join(arr) + "\r\n\r\n"
+
+    except (AttributeError, OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+def getProfileCopyright(profile):
+    """
+    (pyCMS) Gets the copyright for the given profile.
+
+    If ``profile`` isn't a valid CmsProfile object or filename to a profile, a
+    :exc:`PyCMSError` is raised.
+
+    If an error occurs while trying to obtain the copyright tag,
+    a :exc:`PyCMSError` is raised.
+
+    Use this function to obtain the information stored in the profile's
+    copyright tag.
+
+    :param profile: EITHER a valid CmsProfile object, OR a string of the
+        filename of an ICC profile.
+    :returns: A string containing the internal profile information stored in
+        an ICC tag.
+    :exception PyCMSError:
+    """
+    try:
+        # add an extra newline to preserve pyCMS compatibility
+        if not isinstance(profile, ImageCmsProfile):
+            profile = ImageCmsProfile(profile)
+        return (profile.profile.copyright or "") + "\n"
+    except (AttributeError, OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+def getProfileManufacturer(profile):
+    """
+    (pyCMS) Gets the manufacturer for the given profile.
+
+    If ``profile`` isn't a valid CmsProfile object or filename to a profile, a
+    :exc:`PyCMSError` is raised.
+
+    If an error occurs while trying to obtain the manufacturer tag, a
+    :exc:`PyCMSError` is raised.
+
+    Use this function to obtain the information stored in the profile's
+    manufacturer tag.
+
+    :param profile: EITHER a valid CmsProfile object, OR a string of the
+        filename of an ICC profile.
+    :returns: A string containing the internal profile information stored in
+        an ICC tag.
+    :exception PyCMSError:
+    """
+    try:
+        # add an extra newline to preserve pyCMS compatibility
+        if not isinstance(profile, ImageCmsProfile):
+            profile = ImageCmsProfile(profile)
+        return (profile.profile.manufacturer or "") + "\n"
+    except (AttributeError, OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+def getProfileModel(profile):
+    """
+    (pyCMS) Gets the model for the given profile.
+
+    If ``profile`` isn't a valid CmsProfile object or filename to a profile, a
+    :exc:`PyCMSError` is raised.
+
+    If an error occurs while trying to obtain the model tag,
+    a :exc:`PyCMSError` is raised.
+
+    Use this function to obtain the information stored in the profile's
+    model tag.
+
+    :param profile: EITHER a valid CmsProfile object, OR a string of the
+        filename of an ICC profile.
+    :returns: A string containing the internal profile information stored in
+        an ICC tag.
+    :exception PyCMSError:
+    """
+
+    try:
+        # add an extra newline to preserve pyCMS compatibility
+        if not isinstance(profile, ImageCmsProfile):
+            profile = ImageCmsProfile(profile)
+        return (profile.profile.model or "") + "\n"
+    except (AttributeError, OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+def getProfileDescription(profile):
+    """
+    (pyCMS) Gets the description for the given profile.
+
+    If ``profile`` isn't a valid CmsProfile object or filename to a profile, a
+    :exc:`PyCMSError` is raised.
+
+    If an error occurs while trying to obtain the description tag,
+    a :exc:`PyCMSError` is raised.
+
+    Use this function to obtain the information stored in the profile's
+    description tag.
+
+    :param profile: EITHER a valid CmsProfile object, OR a string of the
+        filename of an ICC profile.
+    :returns: A string containing the internal profile information stored in an
+        ICC tag.
+    :exception PyCMSError:
+    """
+
+    try:
+        # add an extra newline to preserve pyCMS compatibility
+        if not isinstance(profile, ImageCmsProfile):
+            profile = ImageCmsProfile(profile)
+        return (profile.profile.profile_description or "") + "\n"
+    except (AttributeError, OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+def getDefaultIntent(profile):
+    """
+    (pyCMS) Gets the default intent name for the given profile.
+
+    If ``profile`` isn't a valid CmsProfile object or filename to a profile, a
+    :exc:`PyCMSError` is raised.
+
+    If an error occurs while trying to obtain the default intent, a
+    :exc:`PyCMSError` is raised.
+
+    Use this function to determine the default (and usually best optimized)
+    rendering intent for this profile.  Most profiles support multiple
+    rendering intents, but are intended mostly for one type of conversion.
+    If you wish to use a different intent than returned, use
+    ImageCms.isIntentSupported() to verify it will work first.
+
+    :param profile: EITHER a valid CmsProfile object, OR a string of the
+        filename of an ICC profile.
+    :returns: Integer 0-3 specifying the default rendering intent for this
+        profile.
+
+            ImageCms.INTENT_PERCEPTUAL            = 0 (DEFAULT)
+            ImageCms.INTENT_RELATIVE_COLORIMETRIC = 1
+            ImageCms.INTENT_SATURATION            = 2
+            ImageCms.INTENT_ABSOLUTE_COLORIMETRIC = 3
+
+        see the pyCMS documentation for details on rendering intents and what
+            they do.
+    :exception PyCMSError:
+    """
+
+    try:
+        if not isinstance(profile, ImageCmsProfile):
+            profile = ImageCmsProfile(profile)
+        return profile.profile.rendering_intent
+    except (AttributeError, OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+def isIntentSupported(profile, intent, direction):
+    """
+    (pyCMS) Checks if a given intent is supported.
+
+    Use this function to verify that you can use your desired
+    ``intent`` with ``profile``, and that ``profile`` can be used for the
+    input/output/proof profile as you desire.
+
+    Some profiles are created specifically for one "direction", can cannot
+    be used for others. Some profiles can only be used for certain
+    rendering intents, so it's best to either verify this before trying
+    to create a transform with them (using this function), or catch the
+    potential :exc:`PyCMSError` that will occur if they don't
+    support the modes you select.
+
+    :param profile: EITHER a valid CmsProfile object, OR a string of the
+        filename of an ICC profile.
+    :param intent: Integer (0-3) specifying the rendering intent you wish to
+        use with this profile
+
+            ImageCms.INTENT_PERCEPTUAL            = 0 (DEFAULT)
+            ImageCms.INTENT_RELATIVE_COLORIMETRIC = 1
+            ImageCms.INTENT_SATURATION            = 2
+            ImageCms.INTENT_ABSOLUTE_COLORIMETRIC = 3
+
+        see the pyCMS documentation for details on rendering intents and what
+            they do.
+    :param direction: Integer specifying if the profile is to be used for
+        input, output, or proof
+
+            INPUT  = 0 (or use ImageCms.DIRECTION_INPUT)
+            OUTPUT = 1 (or use ImageCms.DIRECTION_OUTPUT)
+            PROOF  = 2 (or use ImageCms.DIRECTION_PROOF)
+
+    :returns: 1 if the intent/direction are supported, -1 if they are not.
+    :exception PyCMSError:
+    """
+
+    try:
+        if not isinstance(profile, ImageCmsProfile):
+            profile = ImageCmsProfile(profile)
+        # FIXME: I get different results for the same data w. different
+        # compilers.  Bug in LittleCMS or in the binding?
+        if profile.profile.is_intent_supported(intent, direction):
+            return 1
+        else:
+            return -1
+    except (AttributeError, OSError, TypeError, ValueError) as v:
+        raise PyCMSError(v) from v
+
+
+def versions():
+    """
+    (pyCMS) Fetches versions.
+    """
+
+    return (VERSION, core.littlecms_version, sys.version.split()[0], Image.__version__)

django/lib/python3.6/site-packages/PIL/ImageColor.py

@@ -0,0 +1,300 @@
+#
+# 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 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])``
+    """
+    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)))
+    raise ValueError("unknown color specifier: %r" % color)
+
+
+def getcolor(color, mode):
+    """
+    Same as :py:func:`~PIL.ImageColor.getrgb`, but converts the RGB value to a
+    greyscale value if the mode is not color or a palette image. If the string
+    cannot be parsed, this function raises a :py:exc:`ValueError` exception.
+
+    .. versionadded:: 1.1.4
+
+    :param color: A color string
+    :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[0:3], color[3]
+
+    if 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",
+}

django/lib/python3.6/site-packages/PIL/ImageDraw.py

@@ -0,0 +1,566 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# drawing interface operations
+#
+# History:
+# 1996-04-13 fl   Created (experimental)
+# 1996-08-07 fl   Filled polygons, ellipses.
+# 1996-08-13 fl   Added text support
+# 1998-06-28 fl   Handle I and F images
+# 1998-12-29 fl   Added arc; use arc primitive to draw ellipses
+# 1999-01-10 fl   Added shape stuff (experimental)
+# 1999-02-06 fl   Added bitmap support
+# 1999-02-11 fl   Changed all primitives to take options
+# 1999-02-20 fl   Fixed backwards compatibility
+# 2000-10-12 fl   Copy on write, when necessary
+# 2001-02-18 fl   Use default ink for bitmap/text also in fill mode
+# 2002-10-24 fl   Added support for CSS-style color strings
+# 2002-12-10 fl   Added experimental support for RGBA-on-RGB drawing
+# 2002-12-11 fl   Refactored low-level drawing API (work in progress)
+# 2004-08-26 fl   Made Draw() a factory function, added getdraw() support
+# 2004-09-04 fl   Added width support to line primitive
+# 2004-09-10 fl   Added font mode handling
+# 2006-06-19 fl   Added font bearing support (getmask2)
+#
+# Copyright (c) 1997-2006 by Secret Labs AB
+# Copyright (c) 1996-2006 by Fredrik Lundh
+#
+# See the README file for information on usage and redistribution.
+#
+
+import math
+import numbers
+
+from . import Image, ImageColor
+
+
+"""
+A simple 2D drawing interface for PIL images.
+<p>
+Application code should use the <b>Draw</b> factory, instead of
+directly.
+"""
+
+
+class ImageDraw:
+    def __init__(self, im, mode=None):
+        """
+        Create a drawing instance.
+
+        :param im: The image to draw in.
+        :param mode: Optional mode to use for color values.  For RGB
+           images, this argument can be RGB or RGBA (to blend the
+           drawing into the image).  For all other modes, this argument
+           must be the same as the image mode.  If omitted, the mode
+           defaults to the mode of the image.
+        """
+        im.load()
+        if im.readonly:
+            im._copy()  # make it writeable
+        blend = 0
+        if mode is None:
+            mode = im.mode
+        if mode != im.mode:
+            if mode == "RGBA" and im.mode == "RGB":
+                blend = 1
+            else:
+                raise ValueError("mode mismatch")
+        if mode == "P":
+            self.palette = im.palette
+        else:
+            self.palette = None
+        self.im = im.im
+        self.draw = Image.core.draw(self.im, blend)
+        self.mode = mode
+        if mode in ("I", "F"):
+            self.ink = self.draw.draw_ink(1)
+        else:
+            self.ink = self.draw.draw_ink(-1)
+        if mode in ("1", "P", "I", "F"):
+            # FIXME: fix Fill2 to properly support matte for I+F images
+            self.fontmode = "1"
+        else:
+            self.fontmode = "L"  # aliasing is okay for other modes
+        self.fill = 0
+        self.font = None
+
+    def getfont(self):
+        """
+        Get the current default font.
+
+        :returns: An image font."""
+        if not self.font:
+            # FIXME: should add a font repository
+            from . import ImageFont
+
+            self.font = ImageFont.load_default()
+        return self.font
+
+    def _getink(self, ink, fill=None):
+        if ink is None and fill is None:
+            if self.fill:
+                fill = self.ink
+            else:
+                ink = self.ink
+        else:
+            if ink is not None:
+                if isinstance(ink, str):
+                    ink = ImageColor.getcolor(ink, self.mode)
+                if self.palette and not isinstance(ink, numbers.Number):
+                    ink = self.palette.getcolor(ink)
+                ink = self.draw.draw_ink(ink)
+            if fill is not None:
+                if isinstance(fill, str):
+                    fill = ImageColor.getcolor(fill, self.mode)
+                if self.palette and not isinstance(fill, numbers.Number):
+                    fill = self.palette.getcolor(fill)
+                fill = self.draw.draw_ink(fill)
+        return ink, fill
+
+    def arc(self, xy, start, end, fill=None, width=0):
+        """Draw an arc."""
+        ink, fill = self._getink(fill)
+        if ink is not None:
+            self.draw.draw_arc(xy, start, end, ink, width)
+
+    def bitmap(self, xy, bitmap, fill=None):
+        """Draw a bitmap."""
+        bitmap.load()
+        ink, fill = self._getink(fill)
+        if ink is None:
+            ink = fill
+        if ink is not None:
+            self.draw.draw_bitmap(xy, bitmap.im, ink)
+
+    def chord(self, xy, start, end, fill=None, outline=None, width=1):
+        """Draw a chord."""
+        ink, fill = self._getink(outline, fill)
+        if fill is not None:
+            self.draw.draw_chord(xy, start, end, fill, 1)
+        if ink is not None and ink != fill and width != 0:
+            self.draw.draw_chord(xy, start, end, ink, 0, width)
+
+    def ellipse(self, xy, fill=None, outline=None, width=1):
+        """Draw an ellipse."""
+        ink, fill = self._getink(outline, fill)
+        if fill is not None:
+            self.draw.draw_ellipse(xy, fill, 1)
+        if ink is not None and ink != fill and width != 0:
+            self.draw.draw_ellipse(xy, ink, 0, width)
+
+    def line(self, xy, fill=None, width=0, joint=None):
+        """Draw a line, or a connected sequence of line segments."""
+        ink = self._getink(fill)[0]
+        if ink is not None:
+            self.draw.draw_lines(xy, ink, width)
+            if joint == "curve" and width > 4:
+                if not isinstance(xy[0], (list, tuple)):
+                    xy = [tuple(xy[i : i + 2]) for i in range(0, len(xy), 2)]
+                for i in range(1, len(xy) - 1):
+                    point = xy[i]
+                    angles = [
+                        math.degrees(math.atan2(end[0] - start[0], start[1] - end[1]))
+                        % 360
+                        for start, end in ((xy[i - 1], point), (point, xy[i + 1]))
+                    ]
+                    if angles[0] == angles[1]:
+                        # This is a straight line, so no joint is required
+                        continue
+
+                    def coord_at_angle(coord, angle):
+                        x, y = coord
+                        angle -= 90
+                        distance = width / 2 - 1
+                        return tuple(
+                            [
+                                p + (math.floor(p_d) if p_d > 0 else math.ceil(p_d))
+                                for p, p_d in (
+                                    (x, distance * math.cos(math.radians(angle))),
+                                    (y, distance * math.sin(math.radians(angle))),
+                                )
+                            ]
+                        )
+
+                    flipped = (
+                        angles[1] > angles[0] and angles[1] - 180 > angles[0]
+                    ) or (angles[1] < angles[0] and angles[1] + 180 > angles[0])
+                    coords = [
+                        (point[0] - width / 2 + 1, point[1] - width / 2 + 1),
+                        (point[0] + width / 2 - 1, point[1] + width / 2 - 1),
+                    ]
+                    if flipped:
+                        start, end = (angles[1] + 90, angles[0] + 90)
+                    else:
+                        start, end = (angles[0] - 90, angles[1] - 90)
+                    self.pieslice(coords, start - 90, end - 90, fill)
+
+                    if width > 8:
+                        # Cover potential gaps between the line and the joint
+                        if flipped:
+                            gapCoords = [
+                                coord_at_angle(point, angles[0] + 90),
+                                point,
+                                coord_at_angle(point, angles[1] + 90),
+                            ]
+                        else:
+                            gapCoords = [
+                                coord_at_angle(point, angles[0] - 90),
+                                point,
+                                coord_at_angle(point, angles[1] - 90),
+                            ]
+                        self.line(gapCoords, fill, width=3)
+
+    def shape(self, shape, fill=None, outline=None):
+        """(Experimental) Draw a shape."""
+        shape.close()
+        ink, fill = self._getink(outline, fill)
+        if fill is not None:
+            self.draw.draw_outline(shape, fill, 1)
+        if ink is not None and ink != fill:
+            self.draw.draw_outline(shape, ink, 0)
+
+    def pieslice(self, xy, start, end, fill=None, outline=None, width=1):
+        """Draw a pieslice."""
+        ink, fill = self._getink(outline, fill)
+        if fill is not None:
+            self.draw.draw_pieslice(xy, start, end, fill, 1)
+        if ink is not None and ink != fill and width != 0:
+            self.draw.draw_pieslice(xy, start, end, ink, 0, width)
+
+    def point(self, xy, fill=None):
+        """Draw one or more individual pixels."""
+        ink, fill = self._getink(fill)
+        if ink is not None:
+            self.draw.draw_points(xy, ink)
+
+    def polygon(self, xy, fill=None, outline=None):
+        """Draw a polygon."""
+        ink, fill = self._getink(outline, fill)
+        if fill is not None:
+            self.draw.draw_polygon(xy, fill, 1)
+        if ink is not None and ink != fill:
+            self.draw.draw_polygon(xy, ink, 0)
+
+    def rectangle(self, xy, fill=None, outline=None, width=1):
+        """Draw a rectangle."""
+        ink, fill = self._getink(outline, fill)
+        if fill is not None:
+            self.draw.draw_rectangle(xy, fill, 1)
+        if ink is not None and ink != fill and width != 0:
+            self.draw.draw_rectangle(xy, ink, 0, width)
+
+    def _multiline_check(self, text):
+        """Draw text."""
+        split_character = "\n" if isinstance(text, str) else b"\n"
+
+        return split_character in text
+
+    def _multiline_split(self, text):
+        split_character = "\n" if isinstance(text, str) else b"\n"
+
+        return text.split(split_character)
+
+    def text(
+        self,
+        xy,
+        text,
+        fill=None,
+        font=None,
+        anchor=None,
+        spacing=4,
+        align="left",
+        direction=None,
+        features=None,
+        language=None,
+        stroke_width=0,
+        stroke_fill=None,
+        *args,
+        **kwargs
+    ):
+        if self._multiline_check(text):
+            return self.multiline_text(
+                xy,
+                text,
+                fill,
+                font,
+                anchor,
+                spacing,
+                align,
+                direction,
+                features,
+                language,
+                stroke_width,
+                stroke_fill,
+            )
+
+        if font is None:
+            font = self.getfont()
+
+        def getink(fill):
+            ink, fill = self._getink(fill)
+            if ink is None:
+                return fill
+            return ink
+
+        def draw_text(ink, stroke_width=0, stroke_offset=None):
+            coord = xy
+            try:
+                mask, offset = font.getmask2(
+                    text,
+                    self.fontmode,
+                    direction=direction,
+                    features=features,
+                    language=language,
+                    stroke_width=stroke_width,
+                    *args,
+                    **kwargs,
+                )
+                coord = coord[0] + offset[0], coord[1] + offset[1]
+            except AttributeError:
+                try:
+                    mask = font.getmask(
+                        text,
+                        self.fontmode,
+                        direction,
+                        features,
+                        language,
+                        stroke_width,
+                        *args,
+                        **kwargs,
+                    )
+                except TypeError:
+                    mask = font.getmask(text)
+            if stroke_offset:
+                coord = coord[0] + stroke_offset[0], coord[1] + stroke_offset[1]
+            self.draw.draw_bitmap(coord, mask, ink)
+
+        ink = getink(fill)
+        if ink is not None:
+            stroke_ink = None
+            if stroke_width:
+                stroke_ink = getink(stroke_fill) if stroke_fill is not None else ink
+
+            if stroke_ink is not None:
+                # Draw stroked text
+                draw_text(stroke_ink, stroke_width)
+
+                # Draw normal text
+                draw_text(ink, 0, (stroke_width, stroke_width))
+            else:
+                # Only draw normal text
+                draw_text(ink)
+
+    def multiline_text(
+        self,
+        xy,
+        text,
+        fill=None,
+        font=None,
+        anchor=None,
+        spacing=4,
+        align="left",
+        direction=None,
+        features=None,
+        language=None,
+        stroke_width=0,
+        stroke_fill=None,
+    ):
+        widths = []
+        max_width = 0
+        lines = self._multiline_split(text)
+        line_spacing = (
+            self.textsize("A", font=font, stroke_width=stroke_width)[1] + spacing
+        )
+        for line in lines:
+            line_width, line_height = self.textsize(
+                line,
+                font,
+                direction=direction,
+                features=features,
+                language=language,
+                stroke_width=stroke_width,
+            )
+            widths.append(line_width)
+            max_width = max(max_width, line_width)
+        left, top = xy
+        for idx, line in enumerate(lines):
+            if align == "left":
+                pass  # left = x
+            elif align == "center":
+                left += (max_width - widths[idx]) / 2.0
+            elif align == "right":
+                left += max_width - widths[idx]
+            else:
+                raise ValueError('align must be "left", "center" or "right"')
+            self.text(
+                (left, top),
+                line,
+                fill,
+                font,
+                anchor,
+                direction=direction,
+                features=features,
+                language=language,
+                stroke_width=stroke_width,
+                stroke_fill=stroke_fill,
+            )
+            top += line_spacing
+            left = xy[0]
+
+    def textsize(
+        self,
+        text,
+        font=None,
+        spacing=4,
+        direction=None,
+        features=None,
+        language=None,
+        stroke_width=0,
+    ):
+        """Get the size of a given string, in pixels."""
+        if self._multiline_check(text):
+            return self.multiline_textsize(
+                text, font, spacing, direction, features, language, stroke_width
+            )
+
+        if font is None:
+            font = self.getfont()
+        return font.getsize(text, direction, features, language, stroke_width)
+
+    def multiline_textsize(
+        self,
+        text,
+        font=None,
+        spacing=4,
+        direction=None,
+        features=None,
+        language=None,
+        stroke_width=0,
+    ):
+        max_width = 0
+        lines = self._multiline_split(text)
+        line_spacing = (
+            self.textsize("A", font=font, stroke_width=stroke_width)[1] + spacing
+        )
+        for line in lines:
+            line_width, line_height = self.textsize(
+                line, font, spacing, direction, features, language, stroke_width
+            )
+            max_width = max(max_width, line_width)
+        return max_width, len(lines) * line_spacing - spacing
+
+
+def Draw(im, mode=None):
+    """
+    A simple 2D drawing interface for PIL images.
+
+    :param im: The image to draw in.
+    :param mode: Optional mode to use for color values.  For RGB
+       images, this argument can be RGB or RGBA (to blend the
+       drawing into the image).  For all other modes, this argument
+       must be the same as the image mode.  If omitted, the mode
+       defaults to the mode of the image.
+    """
+    try:
+        return im.getdraw(mode)
+    except AttributeError:
+        return ImageDraw(im, mode)
+
+
+# experimental access to the outline API
+try:
+    Outline = Image.core.outline
+except AttributeError:
+    Outline = None
+
+
+def getdraw(im=None, hints=None):
+    """
+    (Experimental) A more advanced 2D drawing interface for PIL images,
+    based on the WCK interface.
+
+    :param im: The image to draw in.
+    :param hints: An optional list of hints.
+    :returns: A (drawing context, drawing resource factory) tuple.
+    """
+    # FIXME: this needs more work!
+    # FIXME: come up with a better 'hints' scheme.
+    handler = None
+    if not hints or "nicest" in hints:
+        try:
+            from . import _imagingagg as handler
+        except ImportError:
+            pass
+    if handler is None:
+        from . import ImageDraw2 as handler
+    if im:
+        im = handler.Draw(im)
+    return im, handler
+
+
+def floodfill(image, xy, value, border=None, thresh=0):
+    """
+    (experimental) Fills a bounded region with a given color.
+
+    :param image: Target image.
+    :param xy: Seed position (a 2-item coordinate tuple). See
+        :ref:`coordinate-system`.
+    :param value: Fill color.
+    :param border: Optional border value.  If given, the region consists of
+        pixels with a color different from the border color.  If not given,
+        the region consists of pixels having the same color as the seed
+        pixel.
+    :param thresh: Optional threshold value which specifies a maximum
+        tolerable difference of a pixel value from the 'background' in
+        order for it to be replaced. Useful for filling regions of
+        non-homogeneous, but similar, colors.
+    """
+    # based on an implementation by Eric S. Raymond
+    # amended by yo1995 @20180806
+    pixel = image.load()
+    x, y = xy
+    try:
+        background = pixel[x, y]
+        if _color_diff(value, background) <= thresh:
+            return  # seed point already has fill color
+        pixel[x, y] = value
+    except (ValueError, IndexError):
+        return  # seed point outside image
+    edge = {(x, y)}
+    # use a set to keep record of current and previous edge pixels
+    # to reduce memory consumption
+    full_edge = set()
+    while edge:
+        new_edge = set()
+        for (x, y) in edge:  # 4 adjacent method
+            for (s, t) in ((x + 1, y), (x - 1, y), (x, y + 1), (x, y - 1)):
+                # If already processed, or if a coordinate is negative, skip
+                if (s, t) in full_edge or s < 0 or t < 0:
+                    continue
+                try:
+                    p = pixel[s, t]
+                except (ValueError, IndexError):
+                    pass
+                else:
+                    full_edge.add((s, t))
+                    if border is None:
+                        fill = _color_diff(p, background) <= thresh
+                    else:
+                        fill = p != value and p != border
+                    if fill:
+                        pixel[s, t] = value
+                        new_edge.add((s, t))
+        full_edge = edge  # discard pixels processed
+        edge = new_edge
+
+
+def _color_diff(color1, color2):
+    """
+    Uses 1-norm distance to calculate difference between two values.
+    """
+    if isinstance(color2, tuple):
+        return sum([abs(color1[i] - color2[i]) for i in range(0, len(color2))])
+    else:
+        return abs(color1 - color2)

django/lib/python3.6/site-packages/PIL/ImageDraw2.py

@@ -0,0 +1,179 @@
+#
+# 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 textsize(self, text, font):
+        """
+        Return the size of the given string, in pixels.
+
+        .. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.textsize`
+        """
+        return self.draw.textsize(text, font=font.font)

django/lib/python3.6/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"))

django/lib/python3.6/site-packages/PIL/ImageFile.py

@@ -0,0 +1,693 @@
+#
+# 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 struct
+import sys
+import warnings
+
+from . import Image
+from ._util import isPath
+
+MAXBLOCK = 65536
+
+SAFEBLOCK = 1024 * 1024
+
+LOAD_TRUNCATED_IMAGES = False
+
+ERRORS = {
+    -1: "image buffer overrun error",
+    -2: "decoding error",
+    -3: "unknown error",
+    -8: "bad configuration",
+    -9: "out of memory error",
+}
+
+
+#
+# --------------------------------------------------------------------
+# Helpers
+
+
+def raise_oserror(error):
+    try:
+        message = Image.core.getcodecstatus(error)
+    except AttributeError:
+        message = ERRORS.get(error)
+    if not message:
+        message = "decoder error %d" % error
+    raise OSError(message + " when reading image file")
+
+
+def raise_ioerror(error):
+    warnings.warn(
+        "raise_ioerror is deprecated and will be removed in a future release. "
+        "Use raise_oserror instead.",
+        DeprecationWarning,
+    )
+    return raise_oserror(error)
+
+
+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
+        self.readonly = 1  # until we know better
+
+        self.decoderconfig = ()
+        self.decodermaxblock = MAXBLOCK
+
+        if isPath(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:
+                raise SyntaxError("not identified by this driver")
+        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 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:
+            raise OSError("cannot load this image")
+
+        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:
+                    if hasattr(Image.core, "map"):
+                        # use built-in mapper  WIN32 only
+                        self.map = Image.core.map(self.filename)
+                        self.map.seek(offset)
+                        self.im = self.map.readimage(
+                            self.mode, self.size, args[1], args[2]
+                        )
+                    else:
+                        # use mmap, if possible
+                        import mmap
+
+                        with open(self.filename, "r") as fp:
+                            self.map = mmap.mmap(
+                                fp.fileno(), 0, access=mmap.ACCESS_READ
+                            )
+                        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""
+
+            for decoder_name, extents, offset, args in self.tile:
+                decoder = Image._getdecoder(
+                    self.mode, decoder_name, args, self.decoderconfig
+                )
+                try:
+                    seek(offset)
+                    decoder.setimage(self.im, extents)
+                    if decoder.pulls_fd:
+                        decoder.setfd(self.fp)
+                        status, err_code = decoder.decode(b"")
+                    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:
+                                    raise OSError("image file is truncated") from e
+
+                            if not s:  # truncated jpeg
+                                if LOAD_TRUNCATED_IMAGES:
+                                    break
+                                else:
+                                    raise OSError(
+                                        "image file is truncated "
+                                        "(%d bytes not processed)" % len(b)
+                                    )
+
+                            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
+            )
+        ):
+            raise EOFError("attempt to seek outside sequence")
+
+        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):
+        raise NotImplementedError("StubImageFile subclass must implement _open")
+
+    def load(self):
+        loader = self._load()
+        if loader is None:
+            raise OSError("cannot find loader for this %s file" % self.format)
+        image = loader.load(self)
+        assert image is not None
+        # become the other object (!)
+        self.__class__ = image.__class__
+        self.__dict__ = image.__dict__
+
+    def _load(self):
+        """(Hook) Find actual image loader."""
+        raise NotImplementedError("StubImageFile subclass must implement _load")
+
+
+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:
+                raise OSError("image was incomplete")
+        if not self.image:
+            raise OSError("cannot parse this image")
+        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
+    if fp == sys.stdout:
+        fp.flush()
+        return
+    try:
+        fh = fp.fileno()
+        fp.flush()
+    except (AttributeError, io.UnsupportedOperation) as e:
+        # compress to Python file-compatible object
+        for e, b, o, a in tile:
+            e = Image._getencoder(im.mode, e, a, im.encoderconfig)
+            if o > 0:
+                fp.seek(o)
+            e.setimage(im.im, b)
+            if e.pushes_fd:
+                e.setfd(fp)
+                l, s = e.encode_to_pyfd()
+            else:
+                while True:
+                    l, s, d = e.encode(bufsize)
+                    fp.write(d)
+                    if s:
+                        break
+            if s < 0:
+                raise OSError("encoder error %d when writing image file" % s) from e
+            e.cleanup()
+    else:
+        # slight speedup: compress to real file object
+        for e, b, o, a in tile:
+            e = Image._getencoder(im.mode, e, a, im.encoderconfig)
+            if o > 0:
+                fp.seek(o)
+            e.setimage(im.im, b)
+            if e.pushes_fd:
+                e.setfd(fp)
+                l, s = e.encode_to_pyfd()
+            else:
+                s = e.encode_to_file(fh, bufsize)
+            if s < 0:
+                raise OSError("encoder error %d when writing image file" % s)
+            e.cleanup()
+    if hasattr(fp, "flush"):
+        fp.flush()
+
+
+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 up to <i>size</i> bytes of data.
+    """
+    if size <= 0:
+        return b""
+    if size <= SAFEBLOCK:
+        return fp.read(size)
+    data = []
+    while size > 0:
+        block = fp.read(min(size, SAFEBLOCK))
+        if not block:
+            break
+        data.append(block)
+        size -= len(block)
+    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 PyDecoder:
+    """
+    Python implementation of a format decoder. Override this class and
+    add the decoding logic in the `decode` method.
+
+    See :ref:`Writing Your Own File Decoder in Python<file-decoders-py>`
+    """
+
+    _pulls_fd = False
+
+    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 decoder specific initialization
+
+        :param args: Array of args items from the tile entry
+        :returns: None
+        """
+        self.args = args
+
+    @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 <0 for the bytes consumed.
+            Err codes are from `ERRORS`
+        """
+        raise NotImplementedError()
+
+    def cleanup(self):
+        """
+        Override to perform decoder 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 decoder
+
+        :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:
+            raise ValueError("Size cannot be negative")
+
+        if (
+            self.state.xsize + self.state.xoff > self.im.size[0]
+            or self.state.ysize + self.state.yoff > self.im.size[1]
+        ):
+            raise ValueError("Tile cannot extend outside image")
+
+    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:
+            raise ValueError("not enough image data")
+        if s[1] != 0:
+            raise ValueError("cannot decode image data")

django/lib/python3.6/site-packages/PIL/ImageFilter.py

@@ -0,0 +1,535 @@
+#
+# 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
+
+try:
+    import numpy
+except ImportError:  # pragma: no cover
+    numpy = None
+
+
+class Filter:
+    pass
+
+
+class MultibandFilter(Filter):
+    pass
+
+
+class BuiltinFilter(MultibandFilter):
+    def filter(self, image):
+        if image.mode == "P":
+            raise ValueError("cannot filter palette images")
+        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.
+    :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):
+            raise ValueError("not enough coefficients in kernel")
+        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":
+            raise ValueError("cannot filter palette images")
+        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):
+    """Gaussian blur filter.
+
+    :param radius: Blur radius.
+    """
+
+    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):
+        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):
+            raise ValueError("Only 3 or 4 output channels are supported")
+        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
+
+        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:
+                        raise ValueError(
+                            "The elements of the table should "
+                            "have a length of {}.".format(channels)
+                        )
+                    table.extend(pixel)
+
+        if wrong_size or len(table) != items * channels:
+            raise ValueError(
+                "The table should have either channels * size**3 float items "
+                "or size**3 items of channels-sized tuples with floats. "
+                "Table should be: {}x{}x{}x{}. Actual length: {}".format(
+                    channels, size[0], size[1], size[2], len(table)
+                )
+            )
+        self.table = table
+
+    @staticmethod
+    def _check_size(size):
+        try:
+            _, _, _ = size
+        except ValueError as e:
+            raise ValueError(
+                "Size should be either an integer or a tuple of three integers."
+            ) from e
+        except TypeError:
+            size = (size, size, size)
+        size = [int(x) for x in size]
+        for size1D in size:
+            if not 2 <= size1D <= 65:
+                raise ValueError("Size should be in [2, 65] range.")
+        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.
+        """
+        size1D, size2D, size3D = cls._check_size(size)
+        if channels not in (3, 4):
+            raise ValueError("Only 3 or 4 output channels are supported")
+
+        table = [0] * (size1D * size2D * size3D * channels)
+        idx_out = 0
+        for b in range(size3D):
+            for g in range(size2D):
+                for r in range(size1D):
+                    table[idx_out : idx_out + channels] = callback(
+                        r / (size1D - 1), g / (size2D - 1), b / (size3D - 1)
+                    )
+                    idx_out += channels
+
+        return cls(
+            (size1D, size2D, size3D),
+            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):
+            raise ValueError("Only 3 or 4 output channels are supported")
+        ch_in = self.channels
+        ch_out = channels or ch_in
+        size1D, size2D, size3D = self.size
+
+        table = [0] * (size1D * size2D * size3D * ch_out)
+        idx_in = 0
+        idx_out = 0
+        for b in range(size3D):
+            for g in range(size2D):
+                for r in range(size1D):
+                    values = self.table[idx_in : idx_in + ch_in]
+                    if with_normals:
+                        values = callback(
+                            r / (size1D - 1),
+                            g / (size2D - 1),
+                            b / (size3D - 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 = [
+            "{} from {}".format(self.__class__.__name__, self.table.__class__.__name__),
+            "size={:d}x{:d}x{:d}".format(*self.size),
+            "channels={:d}".format(self.channels),
+        ]
+        if self.mode:
+            r.append("target_mode={}".format(self.mode))
+        return "<{}>".format(" ".join(r))
+
+    def filter(self, image):
+        from . import Image
+
+        return image.color_lut_3d(
+            self.mode or image.mode,
+            Image.LINEAR,
+            self.channels,
+            self.size[0],
+            self.size[1],
+            self.size[2],
+            self.table,
+        )

django/lib/python3.6/site-packages/PIL/ImageFont.py

@@ -0,0 +1,860 @@
+#
+# 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
+from io import BytesIO
+
+from . import Image
+from ._util import isDirectory, isPath
+
+LAYOUT_BASIC = 0
+LAYOUT_RAQM = 1
+
+
+class _imagingft_not_installed:
+    # module placeholder
+    def __getattr__(self, id):
+        raise ImportError("The _imagingft C module is not installed")
+
+
+try:
+    from . import _imagingft as core
+except ImportError:
+    core = _imagingft_not_installed()
+
+
+# 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()
+                raise OSError("cannot find glyph data file")
+
+            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":
+            raise SyntaxError("Not a PILfont file")
+        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"):
+            raise TypeError("invalid font image mode")
+
+        image.load()
+
+        self.font = Image.core.font(image.im, data)
+
+    def getsize(self, text, *args, **kwargs):
+        """
+        Returns width and height (in pixels) of given text.
+
+        :param text: Text to measure.
+
+        :return: (width, height)
+        """
+        return self.font.getsize(text)
+
+    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)
+
+
+##
+# 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:
+            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 isPath(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 _multiline_split(self, text):
+        split_character = "\n" if isinstance(text, str) else b"\n"
+        return text.split(split_character)
+
+    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 getsize(
+        self, text, direction=None, features=None, language=None, stroke_width=0
+    ):
+        """
+        Returns width and height (in pixels) of given text if rendered in font with
+        provided direction, features, and language.
+
+        :param text: Text to measure.
+
+        :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://docs.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
+
+        :return: (width, height)
+        """
+        size, offset = self.font.getsize(text, False, direction, features, language)
+        return (
+            size[0] + stroke_width * 2 + offset[0],
+            size[1] + stroke_width * 2 + offset[1],
+        )
+
+    def getsize_multiline(
+        self,
+        text,
+        direction=None,
+        spacing=4,
+        features=None,
+        language=None,
+        stroke_width=0,
+    ):
+        """
+        Returns width and height (in pixels) of given text if rendered in font
+        with provided direction, features, and language, while respecting
+        newline characters.
+
+        :param text: Text to measure.
+
+        :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 spacing: The vertical gap between lines, defaulting to 4 pixels.
+
+        :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://docs.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.
+
+                         .. versionadded:: 6.0.0
+
+        :param stroke_width: The width of the text stroke.
+
+                         .. versionadded:: 6.2.0
+
+        :return: (width, height)
+        """
+        max_width = 0
+        lines = self._multiline_split(text)
+        line_spacing = self.getsize("A", stroke_width=stroke_width)[1] + spacing
+        for line in lines:
+            line_width, line_height = self.getsize(
+                line, direction, features, language, stroke_width
+            )
+            max_width = max(max_width, line_width)
+
+        return max_width, len(lines) * line_spacing - spacing
+
+    def getoffset(self, text):
+        """
+        Returns the offset of given text. This is the gap between the
+        starting coordinate and the first marking. Note that this gap is
+        included in the result of :py:func:`~PIL.ImageFont.FreeTypeFont.getsize`.
+
+        :param text: Text to measure.
+
+        :return: A tuple of the x and y offset
+        """
+        return self.font.getsize(text)[1]
+
+    def getmask(
+        self,
+        text,
+        mode="",
+        direction=None,
+        features=None,
+        language=None,
+        stroke_width=0,
+    ):
+        """
+        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
+
+        :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://docs.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
+
+        :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,
+        )[0]
+
+    def getmask2(
+        self,
+        text,
+        mode="",
+        fill=Image.core.fill,
+        direction=None,
+        features=None,
+        language=None,
+        stroke_width=0,
+        *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
+
+        :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://docs.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
+
+        :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
+        """
+        size, offset = self.font.getsize(
+            text, mode == "1", direction, features, language
+        )
+        size = size[0] + stroke_width * 2, size[1] + stroke_width * 2
+        im = fill("L", size, 0)
+        self.font.render(
+            text, im.id, mode == "1", direction, features, language, stroke_width
+        )
+        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.
+        """
+        return FreeTypeFont(
+            font=self.path if font is None else 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:
+            raise NotImplementedError("FreeType 2.9.1 or greater is required") 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)
+
+        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:
+            raise NotImplementedError("FreeType 2.9.1 or greater is required") 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:
+            raise NotImplementedError("FreeType 2.9.1 or greater is required") 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.FLIP_LEFT_RIGHT, Image.FLIP_TOP_BOTTOM,
+            Image.ROTATE_90, Image.ROTATE_180, or Image.ROTATE_270.
+        """
+        self.font = font
+        self.orientation = orientation  # any 'transpose' argument, or None
+
+    def getsize(self, text, *args, **kwargs):
+        w, h = self.font.getsize(text)
+        if self.orientation in (Image.ROTATE_90, Image.ROTATE_270):
+            return h, w
+        return w, h
+
+    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 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. If you are opening many fonts
+    simultaneously on Windows, be aware that Windows limits the number of files
+    that can be open in C at once to 512. If you approach that limit, an
+    ``OSError`` may be thrown, reporting that FreeType "cannot open resource".
+
+    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 points.
+    :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:
+                     `ImageFont.LAYOUT_BASIC` or `ImageFont.LAYOUT_RAQM`.
+
+                     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 isPath(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 isDirectory(directory):
+            if not isinstance(filename, str):
+                filename = filename.decode("utf-8")
+            try:
+                return load(os.path.join(directory, filename))
+            except OSError:
+                pass
+    raise OSError("cannot find font file")
+
+
+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"""
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+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
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+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAYAAAAA//8AAQAAAAAAAAABAAEA
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+//kABQABADcAAAA7AAgABgAAAAD/+QAFAAAAOwAAAEAABwAGAAAAAP/5AAYAAABAAAAARgAHAAYA
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+AP////kABgAAAXcAAAF+AAcABgAAAAD/+QAGAAABfgAAAYQABwAGAAD////7AAUAAAGEAAABigAF
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+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAYAAAAB
+//sAAwACAecAAAHpAAcABgAAAAD/+QAFAAEB6QAAAe4ACAAGAAAAAP/5AAYAAAHuAAAB9AAHAAYA
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+            )
+        ),
+        Image.open(
+            BytesIO(
+                base64.b64decode(
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+w7IkEbzhVQAAAABJRU5ErkJggg==
+"""
+                )
+            )
+        ),
+    )
+    return f

django/lib/python3.6/site-packages/PIL/ImageGrab.py

@@ -0,0 +1,120 @@
+#
+# 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 sys
+
+from . import Image
+
+if sys.platform == "darwin":
+    import os
+    import tempfile
+    import subprocess
+
+
+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)
+            subprocess.call(["screencapture", "-x", filepath])
+            im = Image.open(filepath)
+            im.load()
+            os.unlink(filepath)
+            if bbox:
+                im_cropped = im.crop(bbox)
+                im.close()
+                return im_cropped
+            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
+    # use xdisplay=None for default display on non-win32/macOS systems
+    if not Image.core.HAVE_XCB:
+        raise OSError("Pillow was built without XCB support")
+    size, data = Image.core.grabscreen_x11(xdisplay)
+    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(".jpg")
+        os.close(fh)
+        commands = [
+            'set theFile to (open for access POSIX file "'
+            + filepath
+            + '" with write permission)',
+            "try",
+            "    write (the clipboard as JPEG picture) 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):
+            import io
+
+            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:
+        raise NotImplementedError("ImageGrab.grabclipboard() is macOS and Windows only")

django/lib/python3.6/site-packages/PIL/ImageMath.py

@@ -0,0 +1,253 @@
+#
+# 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
+
+VERBOSE = 0
+
+
+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:
+                raise ValueError("unsupported mode: %s" % im1.im.mode)
+        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:
+                raise TypeError("bad operand type for '%s'" % op) 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.mode != im2.mode:
+                    raise ValueError("mode mismatch")
+            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, size, None)
+            else:
+                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:
+                raise TypeError("bad operand type for '%s'" % op) 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)
+
+    out = builtins.eval(expression, args)
+    try:
+        return out.im
+    except AttributeError:
+        return out

django/lib/python3.6/site-packages/PIL/ImageMode.py

@@ -0,0 +1,64 @@
+#
+# 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.
+#
+
+# mode descriptor cache
+_modes = None
+
+
+class ModeDescriptor:
+    """Wrapper for mode strings."""
+
+    def __init__(self, mode, bands, basemode, basetype):
+        self.mode = mode
+        self.bands = bands
+        self.basemode = basemode
+        self.basetype = basetype
+
+    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
+
+        from . import Image
+
+        modes = {}
+        # core modes
+        for m, (basemode, basetype, bands) in Image._MODEINFO.items():
+            modes[m] = ModeDescriptor(m, bands, basemode, basetype)
+        # extra experimental modes
+        modes["RGBa"] = ModeDescriptor("RGBa", ("R", "G", "B", "a"), "RGB", "L")
+        modes["LA"] = ModeDescriptor("LA", ("L", "A"), "L", "L")
+        modes["La"] = ModeDescriptor("La", ("L", "a"), "L", "L")
+        modes["PA"] = ModeDescriptor("PA", ("P", "A"), "RGB", "L")
+        # mapping modes
+        for i16mode in (
+            "I;16",
+            "I;16S",
+            "I;16L",
+            "I;16LS",
+            "I;16B",
+            "I;16BS",
+            "I;16N",
+            "I;16NS",
+        ):
+            modes[i16mode] = ModeDescriptor(i16mode, ("I",), "L", "L")
+        # set global mode cache atomically
+        _modes = modes
+    return _modes[mode]

django/lib/python3.6/site-packages/PIL/ImageMorph.py

@@ -0,0 +1,245 @@
+# 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:
+                raise Exception("Unknown pattern " + op_name + "!")
+
+            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[0:n]:
+                patterns.append((self._string_permute(pattern, MIRROR_MATRIX), res))
+
+        # negate
+        if "N" in options:
+            n = len(patterns)
+            for pattern, res in patterns[0: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:
+                raise Exception('Syntax error in pattern "' + p + '"')
+            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:
+            raise Exception("No operator loaded")
+
+        if image.mode != "L":
+            raise Exception("Image must be binary, meaning it must use mode L")
+        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:
+            raise Exception("No operator loaded")
+
+        if image.mode != "L":
+            raise Exception("Image must be binary, meaning it must use mode L")
+        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":
+            raise Exception("Image must be binary, meaning it must use mode L")
+        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
+            raise Exception("Wrong size operator file!")
+
+    def save_lut(self, filename):
+        """Save an operator to an mrl file"""
+        if self.lut is None:
+            raise Exception("No operator loaded")
+        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

django/lib/python3.6/site-packages/PIL/ImageOps.py

@@ -0,0 +1,551 @@
+#
+# 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
+
+from . import Image
+
+#
+# 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
+        raise NotImplementedError("mode P support coming soon")
+    elif image.mode in ("L", "RGB"):
+        if image.mode == "RGB" and len(lut) == 256:
+            lut = lut + lut + lut
+        return image.point(lut)
+    else:
+        raise OSError("not supported for this image mode")
+
+
+#
+# actions
+
+
+def autocontrast(image, cutoff=0, ignore=None):
+    """
+    Maximize (normalize) image contrast. This function calculates a
+    histogram of the input image, 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: How many percent to cut off from the histogram.
+    :param ignore: The background pixel value (use None for no background).
+    :return: An image.
+    """
+    histogram = image.histogram()
+    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
+            # 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 // 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 hi end
+            cut = n * cutoff // 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 pad(image, size, method=Image.BICUBIC, color=None, centering=(0.5, 0.5)):
+    """
+    Returns a sized and padded version of the image, expanded to fill the
+    requested aspect ratio and size.
+
+    :param image: The image to size and crop.
+    :param size: The requested output size in pixels, given as a
+                 (width, height) tuple.
+    :param method: What resampling method to use. Default is
+                   :py:attr:`PIL.Image.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.
+    """
+
+    im_ratio = image.width / image.height
+    dest_ratio = size[0] / size[1]
+
+    if im_ratio == dest_ratio:
+        out = image.resize(size, resample=method)
+    else:
+        out = Image.new(image.mode, size, color)
+        if im_ratio > dest_ratio:
+            new_height = int(image.height / image.width * size[0])
+            if new_height != size[1]:
+                image = image.resize((size[0], new_height), resample=method)
+
+            y = int((size[1] - new_height) * max(0, min(centering[1], 1)))
+            out.paste(image, (0, y))
+        else:
+            new_width = int(image.width / image.height * size[1])
+            if new_width != size[0]:
+                image = image.resize((new_width, size[1]), resample=method)
+
+            x = int((size[0] - new_width) * max(0, min(centering[0], 1)))
+            out.paste(image, (x, 0))
+    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.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: What resampling method to use. Default is
+                     :py:attr:`PIL.Image.BICUBIC`. See :ref:`concept-filters`.
+    :returns: An :py:class:`~PIL.Image.Image` object.
+    """
+    if factor == 1:
+        return image.copy()
+    elif factor <= 0:
+        raise ValueError("the factor must be greater than 0")
+    else:
+        size = (round(factor * image.width), round(factor * image.height))
+        return image.resize(size, resample)
+
+
+def deform(image, deformer, resample=Image.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.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
+    out = Image.new(image.mode, (width, height), _color(fill, image.mode))
+    out.paste(image, (left, top))
+    return out
+
+
+def fit(image, size, method=Image.BICUBIC, bleed=0.0, centering=(0.5, 0.5)):
+    """
+    Returns a sized 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 size and crop.
+    :param size: The requested output size in pixels, given as a
+                 (width, height) tuple.
+    :param method: What resampling method to use. Default is
+                   :py:attr:`PIL.Image.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
+    # http://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.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 _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.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):
+    """
+    If an image has an EXIF Orientation tag, return a new image that is
+    transposed accordingly. Otherwise, return a copy of the image.
+
+    :param image: The image to transpose.
+    :return: An image.
+    """
+    exif = image.getexif()
+    orientation = exif.get(0x0112)
+    method = {
+        2: Image.FLIP_LEFT_RIGHT,
+        3: Image.ROTATE_180,
+        4: Image.FLIP_TOP_BOTTOM,
+        5: Image.TRANSPOSE,
+        6: Image.ROTATE_270,
+        7: Image.TRANSVERSE,
+        8: Image.ROTATE_90,
+    }.get(orientation)
+    if method is not None:
+        transposed_image = image.transpose(method)
+        del exif[0x0112]
+        transposed_image.info["exif"] = exif.tobytes()
+        return transposed_image
+    return image.copy()

django/lib/python3.6/site-packages/PIL/ImagePalette.py

@@ -0,0 +1,221 @@
+#
+# 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 and of length ``size``
+        times the number of colors in ``mode``. The list must be aligned
+        by channel (All R values must be contiguous in the list before G
+        and B values.) Defaults to 0 through 255 per channel.
+    :param size: An optional palette size. If given, it cannot be equal to
+        or greater than 256. Defaults to 0.
+    """
+
+    def __init__(self, mode="RGB", palette=None, size=0):
+        self.mode = mode
+        self.rawmode = None  # if set, palette contains raw data
+        self.palette = palette or bytearray(range(256)) * len(self.mode)
+        self.colors = {}
+        self.dirty = None
+        if (size == 0 and len(self.mode) * 256 != len(self.palette)) or (
+            size != 0 and size != len(self.palette)
+        ):
+            raise ValueError("wrong palette size")
+
+    def copy(self):
+        new = ImagePalette()
+
+        new.mode = self.mode
+        new.rawmode = self.rawmode
+        if self.palette is not None:
+            new.palette = self.palette[:]
+        new.colors = self.colors.copy()
+        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 + ";L", self.tobytes()
+
+    def tobytes(self):
+        """Convert palette to bytes.
+
+        .. warning:: This method is experimental.
+        """
+        if self.rawmode:
+            raise ValueError("palette contains raw palette data")
+        if isinstance(self.palette, bytes):
+            return self.palette
+        arr = array.array("B", self.palette)
+        if hasattr(arr, "tobytes"):
+            return arr.tobytes()
+        return arr.tostring()
+
+    # Declare tostring as an alias for tobytes
+    tostring = tobytes
+
+    def getcolor(self, color):
+        """Given an rgb tuple, allocate palette entry.
+
+        .. warning:: This method is experimental.
+        """
+        if self.rawmode:
+            raise ValueError("palette contains raw palette data")
+        if isinstance(color, tuple):
+            try:
+                return self.colors[color]
+            except KeyError as e:
+                # allocate new color slot
+                if isinstance(self.palette, bytes):
+                    self.palette = bytearray(self.palette)
+                index = len(self.colors)
+                if index >= 256:
+                    raise ValueError("cannot allocate more than 256 colors") from e
+                self.colors[color] = index
+                self.palette[index] = color[0]
+                self.palette[index + 256] = color[1]
+                self.palette[index + 512] = color[2]
+                self.dirty = 1
+                return index
+        else:
+            raise ValueError("unknown color specifier: %r" % color)
+
+    def save(self, fp):
+        """Save palette to text file.
+
+        .. warning:: This method is experimental.
+        """
+        if self.rawmode:
+            raise ValueError("palette contains raw palette data")
+        if isinstance(fp, str):
+            fp = open(fp, "w")
+        fp.write("# Palette\n")
+        fp.write("# Mode: %s\n" % self.mode)
+        for i in range(256):
+            fp.write("%d" % i)
+            for j in range(i * len(self.mode), (i + 1) * len(self.mode)):
+                try:
+                    fp.write(" %d" % 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))
+    palette.reverse()
+    return ImagePalette(mode, palette * len(mode))
+
+
+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"):
+    r, g, b = ImageColor.getrgb(white)
+    r = make_linear_lut(0, r)
+    g = make_linear_lut(0, g)
+    b = make_linear_lut(0, b)
+    return ImagePalette("RGB", r + g + b)
+
+
+def wedge(mode="RGB"):
+    return ImagePalette(mode, list(range(256)) * len(mode))
+
+
+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:
+            raise OSError("cannot load palette")
+
+    return lut  # data, rawmode

django/lib/python3.6/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

django/lib/python3.6/site-packages/PIL/ImageQt.py

@@ -0,0 +1,195 @@
+#
+# 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 isPath
+
+qt_versions = [["5", "PyQt5"], ["side2", "PySide2"]]
+
+# 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 == "PyQt5":
+            from PyQt5.QtGui import QImage, qRgba, QPixmap
+            from PyQt5.QtCore import QBuffer, QIODevice
+        elif qt_module == "PySide2":
+            from PySide2.QtGui import QImage, qRgba, QPixmap
+            from PySide2.QtCore import QBuffer, QIODevice
+    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: A PIL Image object, or a file name
+    (given either as Python string or a PyQt string object)
+    """
+    buffer = QBuffer()
+    buffer.open(QIODevice.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}[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
+
+    # 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 isPath(im):
+        im = Image.open(im)
+
+    if im.mode == "1":
+        format = QImage.Format_Mono
+    elif im.mode == "L":
+        format = QImage.Format_Indexed8
+        colortable = []
+        for i in range(256):
+            colortable.append(rgb(i, i, i))
+    elif im.mode == "P":
+        format = QImage.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":
+        data = im.tobytes("raw", "BGRX")
+        format = QImage.Format_RGB32
+    elif im.mode == "RGBA":
+        data = im.tobytes("raw", "BGRA")
+        format = QImage.Format_ARGB32
+    else:
+        raise ValueError("unsupported image mode %r" % im.mode)
+
+    __data = data or align8to32(im.tobytes(), im.size[0], im.mode)
+    return {"data": __data, "im": im, "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["im"].size[0],
+                im_data["im"].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['im'].size[0], im_data['im'].size[1])
+    # result.loadFromData(im_data['data'])
+    # Fix some strange bug that causes
+    if im.mode == "RGB":
+        im = im.convert("RGBA")
+
+    qimage = toqimage(im)
+    return QPixmap.fromImage(qimage)

django/lib/python3.6/site-packages/PIL/ImageSequence.py

@@ -0,0 +1,75 @@
+#
+# 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"):
+            raise AttributeError("im must have seek method")
+        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

django/lib/python3.6/site-packages/PIL/ImageShow.py

@@ -0,0 +1,238 @@
+#
+# 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
+import tempfile
+from shlex import quote
+
+from PIL import Image
+
+_viewers = []
+
+
+def register(viewer, order=1):
+    """
+    The :py:func:`register` function is used to register additional viewers.
+
+    :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 1
+    return 0
+
+
+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.
+        """
+
+        # save temporary image to disk
+        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, file, **options):
+        """Display the given file."""
+        os.system(self.get_command(file, **options))
+        return 1
+
+
+# --------------------------------------------------------------------
+
+
+class WindowsViewer(Viewer):
+    """The default viewer on Windows is the default system application for PNG files."""
+
+    format = "PNG"
+    options = {"compress_level": 1}
+
+    def get_command(self, file, **options):
+        return (
+            'start "Pillow" /WAIT "%s" '
+            "&& ping -n 2 127.0.0.1 >NUL "
+            '&& del /f "%s"' % (file, file)
+        )
+
+
+if sys.platform == "win32":
+    register(WindowsViewer)
+
+
+class MacViewer(Viewer):
+    """The default viewer on MacOS using ``Preview.app``."""
+
+    format = "PNG"
+    options = {"compress_level": 1}
+
+    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 = "({} {}; sleep 20; rm -f {})&".format(
+            command, quote(file), quote(file)
+        )
+        return command
+
+    def show_file(self, file, **options):
+        """Display given file"""
+        fd, path = tempfile.mkstemp()
+        with os.fdopen(fd, "w") as f:
+            f.write(file)
+        with open(path, "r") as f:
+            subprocess.Popen(
+                ["im=$(cat); open -a Preview.app $im; sleep 20; rm -f $im"],
+                shell=True,
+                stdin=f,
+            )
+        os.remove(path)
+        return 1
+
+
+if sys.platform == "darwin":
+    register(MacViewer)
+
+
+class UnixViewer(Viewer):
+    format = "PNG"
+    options = {"compress_level": 1}
+
+    def get_command(self, file, **options):
+        command = self.get_command_ex(file, **options)[0]
+        return "({} {}; rm -f {})&".format(command, quote(file), quote(file))
+
+    def show_file(self, file, **options):
+        """Display given file"""
+        fd, path = tempfile.mkstemp()
+        with os.fdopen(fd, "w") as f:
+            f.write(file)
+        with open(path, "r") as f:
+            command = self.get_command_ex(file, **options)[0]
+            subprocess.Popen(
+                ["im=$(cat);" + command + " $im; rm -f $im"], shell=True, stdin=f
+            )
+        os.remove(path)
+        return 1
+
+
+class DisplayViewer(UnixViewer):
+    """The ImageMagick ``display`` command."""
+
+    def get_command_ex(self, file, **options):
+        command = executable = "display"
+        return command, executable
+
+
+class EogViewer(UnixViewer):
+    """The GNOME Image Viewer ``eog`` command."""
+
+    def get_command_ex(self, file, **options):
+        command = executable = "eog"
+        return command, executable
+
+
+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 += " -name %s" % quote(title)
+        return command, executable
+
+
+if sys.platform not in ("win32", "darwin"):  # unixoids
+    if shutil.which("display"):
+        register(DisplayViewer)
+    if shutil.which("eog"):
+        register(EogViewer)
+    if shutil.which("xv"):
+        register(XVViewer)
+
+if __name__ == "__main__":
+
+    if len(sys.argv) < 2:
+        print("Syntax: python ImageShow.py imagefile [title]")
+        sys.exit()
+
+    with Image.open(sys.argv[1]) as im:
+        print(show(im, *sys.argv[2:]))

django/lib/python3.6/site-packages/PIL/ImageStat.py

@@ -0,0 +1,147 @@
+#
+# 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):
+            raise TypeError("first argument must be image or list")
+        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):
+            layerSum = 0.0
+            for j in range(256):
+                layerSum += j * self.h[i + j]
+            v.append(layerSum)
+        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

django/lib/python3.6/site-packages/PIL/ImageTk.py

@@ -0,0 +1,300 @@
+#
+# 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="PIL:%d" % 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)
+
+
+# --------------------------------------------------------------------
+# 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.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, box=None):
+        """
+        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.
+        :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.
+        """
+
+        # 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
+
+        tk = self.__photo.tk
+
+        try:
+            tk.call("PyImagingPhoto", self.__photo, block.id)
+        except tkinter.TclError:
+            # activate Tkinter hook
+            try:
+                from . import _imagingtk
+
+                try:
+                    if hasattr(tk, "interp"):
+                        # Required for PyPy, which always has CFFI installed
+                        from cffi import FFI
+
+                        ffi = FFI()
+
+                        # PyPy is using an FFI CDATA element
+                        # (Pdb) self.tk.interp
+                        #  <cdata 'Tcl_Interp *' 0x3061b50>
+                        _imagingtk.tkinit(int(ffi.cast("uintptr_t", tk.interp)), 1)
+                    else:
+                        _imagingtk.tkinit(tk.interpaddr(), 1)
+                except AttributeError:
+                    _imagingtk.tkinit(id(tk), 0)
+                tk.call("PyImagingPhoto", self.__photo, block.id)
+            except (ImportError, AttributeError, tkinter.TclError):
+                raise  # configuration problem; cannot attach to Tkinter
+
+
+# --------------------------------------------------------------------
+# 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"] = "PIL:%d" % 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
+
+    photo.tk.call("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:
+        raise OSError("tkinter not initialized")
+    top = tkinter.Toplevel()
+    if title:
+        top.title(title)
+    UI(top, image).pack()

django/lib/python3.6/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.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.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.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.MESH

django/lib/python3.6/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 the
+                       :py:meth:`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))

django/lib/python3.6/site-packages/PIL/ImtImagePlugin.py

@@ -0,0 +1,93 @@
+#
+# 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(br"([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.
+
+        if b"\n" not in self.fp.read(100):
+            raise SyntaxError("not an IM file")
+        self.fp.seek(0)
+
+        xsize = ysize = 0
+
+        while True:
+
+            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(), (self.mode, 0, 1))
+                ]
+
+                break
+
+            else:
+
+                # read key/value pair
+                # FIXME: dangerous, may read whole file
+                s = s + self.fp.readline()
+                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 == "width":
+                    xsize = int(v)
+                    self._size = xsize, ysize
+                elif k == "height":
+                    ysize = int(v)
+                    self._size = xsize, ysize
+                elif k == "pixel" and v == "n8":
+                    self.mode = "L"
+
+
+#
+# --------------------------------------------------------------------
+
+Image.register_open(ImtImageFile.format, ImtImageFile)
+
+#
+# no extension registered (".im" is simply too common)

django/lib/python3.6/site-packages/PIL/IptcImagePlugin.py

@@ -0,0 +1,226 @@
+#
+# 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, i16be as i16, i32be as i32, 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 = i8(s[1]), i8(s[2])
+
+        # syntax
+        if i8(s[0]) != 0x1C or tag[0] < 1 or tag[0] > 9:
+            raise SyntaxError("invalid IPTC/NAA file")
+
+        # field size
+        size = i8(s[3])
+        if size > 132:
+            raise OSError("illegal field length in IPTC/NAA file")
+        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:
+            raise OSError("Unknown IPTC image compression") 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.
+    """
+    from . import TiffImagePlugin, JpegImagePlugin
+    import io
+
+    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

django/lib/python3.6/site-packages/PIL/Jpeg2KImagePlugin.py

@@ -0,0 +1,314 @@
+#
+# The Python Imaging Library
+# $Id$
+#
+# JPEG2000 file handling
+#
+# History:
+# 2014-03-12 ajh  Created
+#
+# 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
+
+
+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 = struct.unpack(">H", hdr)[0]
+    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 _parse_jp2_header(fp):
+    """Parse the JP2 header box to extract size, component count and
+    color space information, returning a (size, mode, mimetype) tuple."""
+
+    # Find the JP2 header box
+    header = None
+    mimetype = None
+    while True:
+        lbox, tbox = struct.unpack(">I4s", fp.read(8))
+        if lbox == 1:
+            lbox = struct.unpack(">Q", fp.read(8))[0]
+            hlen = 16
+        else:
+            hlen = 8
+
+        if lbox < hlen:
+            raise SyntaxError("Invalid JP2 header length")
+
+        if tbox == b"jp2h":
+            header = fp.read(lbox - hlen)
+            break
+        elif tbox == b"ftyp":
+            if fp.read(4) == b"jpx ":
+                mimetype = "image/jpx"
+            fp.seek(lbox - hlen - 4, os.SEEK_CUR)
+        else:
+            fp.seek(lbox - hlen, os.SEEK_CUR)
+
+    if header is None:
+        raise SyntaxError("could not find JP2 header")
+
+    size = None
+    mode = None
+    bpc = None
+    nc = None
+
+    hio = io.BytesIO(header)
+    while True:
+        lbox, tbox = struct.unpack(">I4s", hio.read(8))
+        if lbox == 1:
+            lbox = struct.unpack(">Q", hio.read(8))[0]
+            hlen = 16
+        else:
+            hlen = 8
+
+        content = hio.read(lbox - hlen)
+
+        if tbox == b"ihdr":
+            height, width, nc, bpc, c, unkc, ipr = struct.unpack(">IIHBBBB", content)
+            size = (width, height)
+            if unkc:
+                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"
+                break
+        elif tbox == b"colr":
+            meth, prec, approx = struct.unpack_from(">BBB", content)
+            if meth == 1:
+                cs = struct.unpack_from(">I", content, 3)[0]
+                if cs == 16:  # sRGB
+                    if nc == 1 and (bpc & 0x7F) > 8:
+                        mode = "I;16"
+                    elif nc == 1:
+                        mode = "L"
+                    elif nc == 3:
+                        mode = "RGB"
+                    elif nc == 4:
+                        mode = "RGBA"
+                    break
+                elif cs == 17:  # grayscale
+                    if nc == 1 and (bpc & 0x7F) > 8:
+                        mode = "I;16"
+                    elif nc == 1:
+                        mode = "L"
+                    elif nc == 2:
+                        mode = "LA"
+                    break
+                elif cs == 18:  # sYCC
+                    if nc == 3:
+                        mode = "RGB"
+                    elif nc == 4:
+                        mode = "RGBA"
+                    break
+
+    if size is None or mode is None:
+        raise SyntaxError("Malformed jp2 header")
+
+    return (size, mode, mimetype)
+
+
+##
+# 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 = header
+            else:
+                raise SyntaxError("not a JPEG 2000 file")
+
+        if self.size is None or self.mode is None:
+            raise SyntaxError("unable to determine size/mode")
+
+        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),
+            )
+        ]
+
+    @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):
+    if filename.endswith(".j2k"):
+        kind = "j2k"
+    else:
+        kind = "jp2"
+
+    # Get the keyword arguments
+    info = im.encoderinfo
+
+    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
+            ]
+        )
+    ):
+        raise ValueError("quality_layers must be a sequence of numbers")
+
+    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")
+    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,
+        fd,
+    )
+
+    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")