mirror of
https://codeberg.org/dnkl/foot.git
synced 2026-02-05 04:06:08 -05:00
96 lines
2.9 KiB
Python
96 lines
2.9 KiB
Python
#!/usr/bin/env python3
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import argparse
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import sys
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class Codepoint:
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def __init__(self, start: int, end: None|int = None):
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self.start = start
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self.end = start if end is None else end
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self.vs15 = False
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self.vs16 = False
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def __repr__(self) -> str:
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return f'{self.start:x}-{self.end:x}, vs15={self.vs15}, vs16={self.vs16}'
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument('input', type=argparse.FileType('r'))
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parser.add_argument('output', type=argparse.FileType('w'))
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opts = parser.parse_args()
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codepoints: dict[int, Codepoint] = {}
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for line in opts.input:
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line = line.rstrip()
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if not line:
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continue
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if line[0] == '#':
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continue
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cp, vs, _ = line.split(' ', maxsplit=2)
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cp = int(cp, 16)
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vs = int(vs, 16)
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assert vs == 0xfe0e or vs == 0xfe0f
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if cp not in codepoints:
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codepoints[cp] = Codepoint(cp)
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assert codepoints[cp].start == cp
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if vs == 0xfe0e:
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codepoints[cp].vs15 = True
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else:
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codepoints[cp].vs16 = True
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sorted_list = sorted(codepoints.values(), key=lambda cp: cp.start)
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compacted: list[Codepoint] = []
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for i, cp in enumerate(sorted_list):
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assert cp.end == cp.start
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if i == 0:
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compacted.append(cp)
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continue
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last_cp = compacted[-1]
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if last_cp.end == cp.start - 1 and last_cp.vs15 == cp.vs15 and last_cp.vs16 == cp.vs16:
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compacted[-1].end = cp.start
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else:
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compacted.append(cp)
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opts.output.write('#pragma once\n')
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opts.output.write('#include <stdint.h>\n')
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opts.output.write('#include <stdbool.h>\n')
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opts.output.write('\n')
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opts.output.write('struct emoji_vs {\n')
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opts.output.write(' uint32_t start;\n')
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opts.output.write(' uint32_t end;\n')
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opts.output.write(' bool vs15:1;\n')
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opts.output.write(' bool vs16:1;\n')
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opts.output.write('} __attribute__((packed));\n')
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opts.output.write('_Static_assert(sizeof(struct emoji_vs) == 9, "unexpected struct size");\n')
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opts.output.write('\n')
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opts.output.write('#if defined(FOOT_GRAPHEME_CLUSTERING)\n')
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opts.output.write('\n')
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opts.output.write(f'static const struct emoji_vs emoji_vs[{len(compacted)}] = {{\n')
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for cp in compacted:
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opts.output.write(' {\n')
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opts.output.write(f' .start = 0x{cp.start:X},\n')
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opts.output.write(f' .end = 0x{cp.end:x},\n')
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opts.output.write(f' .vs15 = {"true" if cp.vs15 else "false"},\n')
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opts.output.write(f' .vs16 = {"true" if cp.vs16 else "false"},\n')
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opts.output.write(' },\n')
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opts.output.write('};\n')
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opts.output.write('\n')
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opts.output.write('#endif /* FOOT_GRAPHEME_CLUSTERING */\n')
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if __name__ == '__main__':
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sys.exit(main())
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