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scripts: generate-emoji-variation-sequences: don't assume single codepoint sequences

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Right now (Unicode 15.1), all valid variation sequences consist of a
single Unicode codepoint (followed by either VS-15 or VS-16).

Don't assume this is the case.

We don't actually handle longer sequences. But now we at least catch
such escapes, and error out.
This commit is contained in:
Daniel Eklöf 2024-06-26 18:30:17 +02:00
parent aed9c392eb
commit 085c60a334
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1 changed files with 11 additions and 4 deletions
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15
scripts/generate-emoji-variation-sequences.py
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@ -30,11 +30,18 @@ def main():
if line[0] == '#': if line[0] == '#':
continue continue
cp, vs, _ = line.split(' ', maxsplit=2) # Example: "0023 FE0E ; text style; # (1.1) NUMBER SIGN"
cp = int(cp, 16) cps, _ = line.split(';', maxsplit=1) # cps = "0023 FE0F "
vs = int(vs, 16) cps = cps.strip().split(' ') # cps = ["0023", "FE0F"]
assert vs == 0xfe0e or vs == 0xfe0f if len(cps) != 2:
raise NotImplementedError(f'emoji variation sequences with more than one base codepoint: {cps}')
cp, vs = cps # cp = "0023", vs = "FE0F"
cp = int(cp, 16) # cp = 0x23
vs = int(vs, 16) # vs = 0xfe0f
assert vs in [0xfe0e, 0xfe0f]
if cp not in codepoints: if cp not in codepoints:
codepoints[cp] = Codepoint(cp) codepoints[cp] = Codepoint(cp)