/usr/lib/python3/dist-packages/PIL/WmfImagePlugin.py is in python3-pil 4.0.0-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 | #
# The Python Imaging Library
# $Id$
#
# WMF stub codec
#
# history:
# 1996-12-14 fl Created
# 2004-02-22 fl Turned into a stub driver
# 2004-02-23 fl Added EMF support
#
# Copyright (c) Secret Labs AB 1997-2004. All rights reserved.
# Copyright (c) Fredrik Lundh 1996.
#
# See the README file for information on usage and redistribution.
#
# WMF/EMF reference documentation:
# https://winprotocoldoc.blob.core.windows.net/productionwindowsarchives/MS-WMF/[MS-WMF].pdf
# http://wvware.sourceforge.net/caolan/index.html
# http://wvware.sourceforge.net/caolan/ora-wmf.html
from __future__ import print_function
from PIL import Image, ImageFile, _binary
__version__ = "0.2"
_handler = None
if str != bytes:
long = int
def register_handler(handler):
"""
Install application-specific WMF image handler.
:param handler: Handler object.
"""
global _handler
_handler = handler
if hasattr(Image.core, "drawwmf"):
# install default handler (windows only)
class WmfHandler(object):
def open(self, im):
im.mode = "RGB"
self.bbox = im.info["wmf_bbox"]
def load(self, im):
im.fp.seek(0) # rewind
return Image.frombytes(
"RGB", im.size,
Image.core.drawwmf(im.fp.read(), im.size, self.bbox),
"raw", "BGR", (im.size[0]*3 + 3) & -4, -1
)
register_handler(WmfHandler())
# --------------------------------------------------------------------
word = _binary.i16le
short = _binary.si16le
dword = _binary.i32le
_long = _binary.si32le
#
# --------------------------------------------------------------------
# Read WMF file
def _accept(prefix):
return (
prefix[:6] == b"\xd7\xcd\xc6\x9a\x00\x00" or
prefix[:4] == b"\x01\x00\x00\x00"
)
##
# Image plugin for Windows metafiles.
class WmfStubImageFile(ImageFile.StubImageFile):
format = "WMF"
format_description = "Windows Metafile"
def _open(self):
# check placable header
s = self.fp.read(80)
if s[:6] == b"\xd7\xcd\xc6\x9a\x00\x00":
# placeable windows metafile
# get units per inch
inch = word(s, 14)
# get bounding box
x0 = short(s, 6)
y0 = short(s, 8)
x1 = short(s, 10)
y1 = short(s, 12)
# normalize size to 72 dots per inch
size = (x1 - x0) * 72 // inch, (y1 - y0) * 72 // inch
self.info["wmf_bbox"] = x0, y0, x1, y1
self.info["dpi"] = 72
# print(self.mode, self.size, self.info)
# sanity check (standard metafile header)
if s[22:26] != b"\x01\x00\t\x00":
raise SyntaxError("Unsupported WMF file format")
elif dword(s) == 1 and s[40:44] == b" EMF":
# enhanced metafile
# get bounding box
x0 = _long(s, 8)
y0 = _long(s, 12)
x1 = _long(s, 16)
y1 = _long(s, 20)
# get frame (in 0.01 millimeter units)
frame = _long(s, 24), _long(s, 28), _long(s, 32), _long(s, 36)
# normalize size to 72 dots per inch
size = x1 - x0, y1 - y0
# calculate dots per inch from bbox and frame
xdpi = 2540 * (x1 - y0) // (frame[2] - frame[0])
ydpi = 2540 * (y1 - y0) // (frame[3] - frame[1])
self.info["wmf_bbox"] = x0, y0, x1, y1
if xdpi == ydpi:
self.info["dpi"] = xdpi
else:
self.info["dpi"] = xdpi, ydpi
else:
raise SyntaxError("Unsupported file format")
self.mode = "RGB"
self.size = size
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 IOError("WMF save handler not installed")
_handler.save(im, fp, filename)
#
# --------------------------------------------------------------------
# Registry stuff
Image.register_open(WmfStubImageFile.format, WmfStubImageFile, _accept)
Image.register_save(WmfStubImageFile.format, _save)
Image.register_extension(WmfStubImageFile.format, ".wmf")
Image.register_extension(WmfStubImageFile.format, ".emf")
|