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docs(file-io): clarify bounded-read safety guarantee

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cangen185-sudo 2026-10-28 12:49:16 +08:00
parent ac4b0da14c
commit b6dc05de39
1 changed files with 4 additions and 2 deletions
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6
reme/steps/file_io/_file_io.py
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@ -111,8 +111,10 @@ async def read_file_safe(
"""Read file in byte mode and decode using extension-aware strategy.
Returns ``(text, encoding)``. With ``require_complete``, reject files above
the byte limit or reads that do not reach EOF, so a caller cannot write back
truncated contents during a read-modify-write operation.
the byte limit or reads that leave unread bytes at the EOF check. This only
prevents returning a truncated bounded read for write-back; it does not
support oversized-file editing, provide a stable snapshot against concurrent
changes, or make subsequent writes atomic.
"""
stat = await aiofiles.os.stat(str(file_path))
if require_complete and stat.st_size > max_bytes: