Pillow/PIL/GimpPaletteFile.py

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2010-07-31 06:52:47 +04:00
#
# 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, string
##
# File handler for GIMP's palette format.
class GimpPaletteFile:
rawmode = "RGB"
def __init__(self, fp):
self.palette = map(lambda i: chr(i)*3, range(256))
if fp.readline()[:12] != "GIMP Palette":
raise SyntaxError, "not a GIMP palette file"
i = 0
while i <= 255:
s = fp.readline()
if not s:
break
# skip fields and comment lines
if re.match("\w+:|#", s):
continue
if len(s) > 100:
raise SyntaxError, "bad palette file"
v = tuple(map(int, string.split(s)[:3]))
if len(v) != 3:
raise ValueError, "bad palette entry"
if 0 <= i <= 255:
self.palette[i] = chr(v[0]) + chr(v[1]) + chr(v[2])
i = i + 1
self.palette = string.join(self.palette, "")
def getpalette(self):
return self.palette, self.rawmode