Pillow/PIL/GimpPaletteFile.py

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#
# 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
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from PIL._binary import o8
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##
# File handler for GIMP's palette format.
class GimpPaletteFile:
rawmode = "RGB"
def __init__(self, fp):
self.palette = [o8(i)*3 for i in range(256)]
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if fp.readline()[:12] != b"GIMP Palette":
raise SyntaxError("not a GIMP palette file")
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i = 0
while i <= 255:
s = fp.readline()
if not s:
break
# skip fields and comment lines
if re.match(b"\w+:|#", s):
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continue
if len(s) > 100:
raise SyntaxError("bad palette file")
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v = tuple(map(int, s.split()[:3]))
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if len(v) != 3:
raise ValueError("bad palette entry")
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if 0 <= i <= 255:
self.palette[i] = o8(v[0]) + o8(v[1]) + o8(v[2])
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i += 1
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self.palette = b"".join(self.palette)
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def getpalette(self):
return self.palette, self.rawmode