26 lines
834 B
Python
26 lines
834 B
Python
"""模板渲染：从 templates/ 目录加载 .txt 模板并用 str.format 填充。
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查找顺序：本模块所在目录、当前工作目录。
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文件按修改时间自动热重载，改动后无需重启。
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"""
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from pathlib import Path
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_CANDIDATE_DIRS = [Path(__file__).parent / "templates", Path("templates")]
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_cache: dict[str, tuple[float, str]] = {} # name -> (mtime, content)
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def _dir() -> Path:
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for d in _CANDIDATE_DIRS:
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if d.is_dir():
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return d
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raise FileNotFoundError("未找到 templates/ 目录")
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def render(name: str, **kwargs) -> str:
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path = _dir() / f"{name}.txt"
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mtime = path.stat().st_mtime
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cached = _cache.get(name)
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if cached is None or cached[0] != mtime:
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_cache[name] = (mtime, path.read_text(encoding="utf-8"))
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return _cache[name][1].format(**kwargs)
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