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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/XpmImagePlugin.py
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diff --git a/env/lib/python3.10/site-packages/PIL/XpmImagePlugin.py b/env/lib/python3.10/site-packages/PIL/XpmImagePlugin.py
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+#
+# The Python Imaging Library.
+# $Id$
+#
+# XPM File handling
+#
+# History:
+# 1996-12-29 fl Created
+# 2001-02-17 fl Use 're' instead of 'regex' (Python 2.1) (0.7)
+#
+# Copyright (c) Secret Labs AB 1997-2001.
+# Copyright (c) Fredrik Lundh 1996-2001.
+#
+# See the README file for information on usage and redistribution.
+#
+
+
+import re
+
+from . import Image, ImageFile, ImagePalette
+from ._binary import o8
+
+# XPM header
+xpm_head = re.compile(b'"([0-9]*) ([0-9]*) ([0-9]*) ([0-9]*)')
+
+
+def _accept(prefix):
+ return prefix[:9] == b"/* XPM */"
+
+
+##
+# Image plugin for X11 pixel maps.
+
+
+class XpmImageFile(ImageFile.ImageFile):
+
+ format = "XPM"
+ format_description = "X11 Pixel Map"
+
+ def _open(self):
+
+ if not _accept(self.fp.read(9)):
+ raise SyntaxError("not an XPM file")
+
+ # skip forward to next string
+ while True:
+ s = self.fp.readline()
+ if not s:
+ raise SyntaxError("broken XPM file")
+ m = xpm_head.match(s)
+ if m:
+ break
+
+ self._size = int(m.group(1)), int(m.group(2))
+
+ pal = int(m.group(3))
+ bpp = int(m.group(4))
+
+ if pal > 256 or bpp != 1:
+ raise ValueError("cannot read this XPM file")
+
+ #
+ # load palette description
+
+ palette = [b"\0\0\0"] * 256
+
+ for _ in range(pal):
+
+ s = self.fp.readline()
+ if s[-2:] == b"\r\n":
+ s = s[:-2]
+ elif s[-1:] in b"\r\n":
+ s = s[:-1]
+
+ c = s[1]
+ s = s[2:-2].split()
+
+ for i in range(0, len(s), 2):
+
+ if s[i] == b"c":
+
+ # process colour key
+ rgb = s[i + 1]
+ if rgb == b"None":
+ self.info["transparency"] = c
+ elif rgb[:1] == b"#":
+ # FIXME: handle colour names (see ImagePalette.py)
+ rgb = int(rgb[1:], 16)
+ palette[c] = (
+ o8((rgb >> 16) & 255) + o8((rgb >> 8) & 255) + o8(rgb & 255)
+ )
+ else:
+ # unknown colour
+ raise ValueError("cannot read this XPM file")
+ break
+
+ else:
+
+ # missing colour key
+ raise ValueError("cannot read this XPM file")
+
+ self.mode = "P"
+ self.palette = ImagePalette.raw("RGB", b"".join(palette))
+
+ self.tile = [("raw", (0, 0) + self.size, self.fp.tell(), ("P", 0, 1))]
+
+ def load_read(self, bytes):
+
+ #
+ # load all image data in one chunk
+
+ xsize, ysize = self.size
+
+ s = [None] * ysize
+
+ for i in range(ysize):
+ s[i] = self.fp.readline()[1 : xsize + 1].ljust(xsize)
+
+ return b"".join(s)
+
+
+#
+# Registry
+
+
+Image.register_open(XpmImageFile.format, XpmImageFile, _accept)
+
+Image.register_extension(XpmImageFile.format, ".xpm")
+
+Image.register_mime(XpmImageFile.format, "image/xpm")