/usr/lib/python3/dist-packages/PIL/XbmImagePlugin.py is in python3-pil 5.1.0-1.
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# The Python Imaging Library.
# $Id$
#
# XBM File handling
#
# History:
# 1995-09-08 fl Created
# 1996-11-01 fl Added save support
# 1997-07-07 fl Made header parser more tolerant
# 1997-07-22 fl Fixed yet another parser bug
# 2001-02-17 fl Use 're' instead of 'regex' (Python 2.1) (0.4)
# 2001-05-13 fl Added hotspot handling (based on code from Bernhard Herzog)
# 2004-02-24 fl Allow some whitespace before first #define
#
# Copyright (c) 1997-2004 by Secret Labs AB
# Copyright (c) 1996-1997 by Fredrik Lundh
#
# See the README file for information on usage and redistribution.
#
import re
from . import Image, ImageFile
__version__ = "0.6"
# XBM header
xbm_head = re.compile(
br"\s*#define[ \t]+.*_width[ \t]+(?P<width>[0-9]+)[\r\n]+"
b"#define[ \t]+.*_height[ \t]+(?P<height>[0-9]+)[\r\n]+"
b"(?P<hotspot>"
b"#define[ \t]+[^_]*_x_hot[ \t]+(?P<xhot>[0-9]+)[\r\n]+"
b"#define[ \t]+[^_]*_y_hot[ \t]+(?P<yhot>[0-9]+)[\r\n]+"
b")?"
b"[\\000-\\377]*_bits\\[\\]"
)
def _accept(prefix):
return prefix.lstrip()[:7] == b"#define"
##
# Image plugin for X11 bitmaps.
class XbmImageFile(ImageFile.ImageFile):
format = "XBM"
format_description = "X11 Bitmap"
def _open(self):
m = xbm_head.match(self.fp.read(512))
if m:
xsize = int(m.group("width"))
ysize = int(m.group("height"))
if m.group("hotspot"):
self.info["hotspot"] = (
int(m.group("xhot")), int(m.group("yhot"))
)
self.mode = "1"
self.size = xsize, ysize
self.tile = [("xbm", (0, 0)+self.size, m.end(), None)]
def _save(im, fp, filename):
if im.mode != "1":
raise IOError("cannot write mode %s as XBM" % im.mode)
fp.write(("#define im_width %d\n" % im.size[0]).encode('ascii'))
fp.write(("#define im_height %d\n" % im.size[1]).encode('ascii'))
hotspot = im.encoderinfo.get("hotspot")
if hotspot:
fp.write(("#define im_x_hot %d\n" % hotspot[0]).encode('ascii'))
fp.write(("#define im_y_hot %d\n" % hotspot[1]).encode('ascii'))
fp.write(b"static char im_bits[] = {\n")
ImageFile._save(im, fp, [("xbm", (0, 0)+im.size, 0, None)])
fp.write(b"};\n")
Image.register_open(XbmImageFile.format, XbmImageFile, _accept)
Image.register_save(XbmImageFile.format, _save)
Image.register_extension(XbmImageFile.format, ".xbm")
Image.register_mime(XbmImageFile.format, "image/xbm")
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