50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
import os
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def get_mtime_ns(stat_result: os.stat_result) -> int:
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"""Extract mtime in nanoseconds from a stat result."""
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return getattr(
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stat_result, "st_mtime_ns", int(stat_result.st_mtime * 1_000_000_000)
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)
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def get_size_and_mtime_ns(path: str, follow_symlinks: bool = True) -> tuple[int, int]:
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"""Get file size in bytes and mtime in nanoseconds."""
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st = os.stat(path, follow_symlinks=follow_symlinks)
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return st.st_size, get_mtime_ns(st)
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def verify_file_unchanged(
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mtime_db: int | None,
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size_db: int | None,
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stat_result: os.stat_result,
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) -> bool:
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"""Check if a file is unchanged based on mtime and size.
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Returns True if the file's mtime and size match the database values.
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Returns False if mtime_db is None or values don't match.
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"""
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if mtime_db is None:
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return False
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actual_mtime_ns = get_mtime_ns(stat_result)
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if int(mtime_db) != int(actual_mtime_ns):
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return False
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sz = int(size_db or 0)
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if sz > 0:
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return int(stat_result.st_size) == sz
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return True
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def list_files_recursively(base_dir: str) -> list[str]:
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"""Recursively list all files in a directory."""
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out: list[str] = []
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base_abs = os.path.abspath(base_dir)
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if not os.path.isdir(base_abs):
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return out
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for dirpath, _subdirs, filenames in os.walk(
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base_abs, topdown=True, followlinks=False
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):
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for name in filenames:
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out.append(os.path.abspath(os.path.join(dirpath, name)))
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return out
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