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37 lines
933 B
Python
37 lines
933 B
Python
from __future__ import annotations
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import re
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from dataclasses import dataclass
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Seconds = float
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@dataclass
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class Metadata:
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name: str
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value: str
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@dataclass
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class Subtitle:
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text: str
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start: Seconds
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end: Seconds | None = None
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def parse_lrc(text):
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for line in text.split('\n'):
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times = []
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while mobj := re.fullmatch(r'\[(?P<time>((\d+:)?\d+:)?\d+(.\d+)?)\](?P<content>.*)', line):
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times.append(sum(
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float(t) * 60**i for i, t in enumerate(reversed(mobj.group('time').split(':')))))
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line = mobj.group('content')
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for t in times:
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yield Subtitle(start=t, text=line.strip())
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if not times:
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if mobj := re.fullmatch(r'\[(?P<name>[^\]:]+):(?P<value>[^\]]+)\]', line):
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yield Metadata(mobj.group('name'), mobj.group('value').strip())
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elif line.strip():
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yield ValueError(line)
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