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60 lines
1.5 KiB
Python
60 lines
1.5 KiB
Python
"""Convenience layer on top of stdlib's shutil and os"""
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import os
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import stat
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from typing import Callable, TypeVar
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from .compat import py311
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from distutils import log
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try:
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from os import chmod # pyright: ignore[reportAssignmentType]
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# Losing type-safety w/ pyright, but that's ok
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except ImportError: # pragma: no cover
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# Jython compatibility
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def chmod(*args: object, **kwargs: object) -> None: # type: ignore[misc] # Mypy reuses the imported definition anyway
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pass
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_T = TypeVar("_T")
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def attempt_chmod_verbose(path, mode):
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log.debug("changing mode of %s to %o", path, mode)
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try:
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chmod(path, mode)
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except OSError as e: # pragma: no cover
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log.debug("chmod failed: %s", e)
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# Must match shutil._OnExcCallback
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def _auto_chmod(
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func: Callable[..., _T], arg: str, exc: BaseException
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) -> _T: # pragma: no cover
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"""shutils onexc callback to automatically call chmod for certain functions."""
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# Only retry for scenarios known to have an issue
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if func in [os.unlink, os.remove] and os.name == 'nt':
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attempt_chmod_verbose(arg, stat.S_IWRITE)
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return func(arg)
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raise exc
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def rmtree(path, ignore_errors=False, onexc=_auto_chmod):
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"""
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Similar to ``shutil.rmtree`` but automatically executes ``chmod``
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for well know Windows failure scenarios.
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"""
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return py311.shutil_rmtree(path, ignore_errors, onexc)
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def rmdir(path, **opts):
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if os.path.isdir(path):
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rmtree(path, **opts)
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def current_umask():
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tmp = os.umask(0o022)
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os.umask(tmp)
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return tmp
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