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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 typing import IO | |
| from ._binary import o8 | |
| class GimpPaletteFile: | |
| """File handler for GIMP's palette format.""" | |
| rawmode = "RGB" | |
| def __init__(self, fp: IO[bytes]) -> None: | |
| 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) | |
| palette[i] = o8(v[0]) + o8(v[1]) + o8(v[2]) | |
| self.palette = b"".join(palette) | |
| def getpalette(self) -> tuple[bytes, str]: | |
| return self.palette, self.rawmode | |