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