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authorLibravatarLibravatar Biswakalyan Bhuyan <biswa@surgot.in> 2022-11-13 23:46:45 +0530
committerLibravatarLibravatar Biswakalyan Bhuyan <biswa@surgot.in> 2022-11-13 23:46:45 +0530
commit9468226a9e2e2ab8cdd599f1d8538e860ca86120 (patch)
tree0a77ada226d6db80639f96b438bf83e4e756edb5 /env/lib/python3.10/site-packages/PIL/XbmImagePlugin.py
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Diffstat (limited to 'env/lib/python3.10/site-packages/PIL/XbmImagePlugin.py')
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diff --git a/env/lib/python3.10/site-packages/PIL/XbmImagePlugin.py b/env/lib/python3.10/site-packages/PIL/XbmImagePlugin.py
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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
+
+# XBM header
+xbm_head = re.compile(
+ rb"\s*#define[ \t]+.*_width[ \t]+(?P<width>[0-9]+)[\r\n]+"
+ b"#define[ \t]+.*_height[ \t]+(?P<height>[0-9]+)[\r\n]+"
+ b"(?P<hotspot>"
+ b"#define[ \t]+[^_]*_x_hot[ \t]+(?P<xhot>[0-9]+)[\r\n]+"
+ b"#define[ \t]+[^_]*_y_hot[ \t]+(?P<yhot>[0-9]+)[\r\n]+"
+ b")?"
+ rb"[\000-\377]*_bits\[]"
+)
+
+
+def _accept(prefix):
+ return prefix.lstrip()[:7] == b"#define"
+
+
+##
+# Image plugin for X11 bitmaps.
+
+
+class XbmImageFile(ImageFile.ImageFile):
+
+ format = "XBM"
+ format_description = "X11 Bitmap"
+
+ def _open(self):
+
+ m = xbm_head.match(self.fp.read(512))
+
+ if not m:
+ raise SyntaxError("not a XBM file")
+
+ 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 OSError(f"cannot write mode {im.mode} as XBM")
+
+ fp.write(f"#define im_width {im.size[0]}\n".encode("ascii"))
+ fp.write(f"#define im_height {im.size[1]}\n".encode("ascii"))
+
+ hotspot = im.encoderinfo.get("hotspot")
+ if hotspot:
+ fp.write(f"#define im_x_hot {hotspot[0]}\n".encode("ascii"))
+ fp.write(f"#define im_y_hot {hotspot[1]}\n".encode("ascii"))
+
+ fp.write(b"static char im_bits[] = {\n")
+
+ ImageFile._save(im, fp, [("xbm", (0, 0) + im.size, 0, None)])
+
+ fp.write(b"};\n")
+
+
+Image.register_open(XbmImageFile.format, XbmImageFile, _accept)
+Image.register_save(XbmImageFile.format, _save)
+
+Image.register_extension(XbmImageFile.format, ".xbm")
+
+Image.register_mime(XbmImageFile.format, "image/xbm")