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37 lines
1013 B
Python
37 lines
1013 B
Python
"""Duration helpers for math animator prompts."""
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from __future__ import annotations
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import re
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_SECOND_PATTERN = re.compile(
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r"(?P<value>\d+(?:\.\d+)?)\s*(?:s|sec|secs|second|seconds|秒(?:钟)?)",
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re.IGNORECASE,
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)
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_MINUTE_PATTERN = re.compile(
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r"(?P<value>\d+(?:\.\d+)?)\s*(?:m|min|mins|minute|minutes|分钟)",
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re.IGNORECASE,
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)
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def parse_target_duration_seconds(text: str) -> float | None:
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"""Parse explicit duration target from user text."""
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raw = str(text or "").strip()
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if not raw:
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return None
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candidates: list[float] = []
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for match in _SECOND_PATTERN.finditer(raw):
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try:
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candidates.append(float(match.group("value")))
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except (TypeError, ValueError):
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continue
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for match in _MINUTE_PATTERN.finditer(raw):
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try:
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candidates.append(float(match.group("value")) * 60.0)
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except (TypeError, ValueError):
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continue
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if not candidates:
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return None
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return max(candidates)
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