mirror of
https://github.com/python-pillow/Pillow.git
synced 2025-03-13 01:05:48 +03:00
56 lines
1.3 KiB
Python
56 lines
1.3 KiB
Python
#
|
|
# 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 typing import IO
|
|
|
|
|
|
class GimpPaletteFile:
|
|
"""File handler for GIMP's palette format."""
|
|
|
|
rawmode = "RGB"
|
|
|
|
def __init__(self, fp: IO[bytes]) -> None:
|
|
if not fp.readline().startswith(b"GIMP Palette"):
|
|
msg = "not a GIMP palette file"
|
|
raise SyntaxError(msg)
|
|
|
|
palette: list[int] = []
|
|
for _ 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 = s.split(maxsplit=3)
|
|
if len(v) < 3:
|
|
msg = "bad palette entry"
|
|
raise ValueError(msg)
|
|
|
|
palette += (int(v[i]) for i in range(3))
|
|
|
|
self.palette = bytes(palette)
|
|
|
|
def getpalette(self) -> tuple[bytes, str]:
|
|
return self.palette, self.rawmode
|