89 lines
2.8 KiB
Python
89 lines
2.8 KiB
Python
# coding: utf-8
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from __future__ import absolute_import, division, print_function
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import os as _os
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import sys as _sys
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import warnings as _warnings
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from tempfile import mkdtemp
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class TemporaryDirectory(object):
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"""Create and return a temporary directory. This has the same
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behavior as mkdtemp but can be used as a context manager. For
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example:
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with TemporaryDirectory() as tmpdir:
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...
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Upon exiting the context, the directory and everything contained
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in it are removed.
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"""
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def __init__(self, suffix="", prefix="tmp", dir=None):
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self._closed = False
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self.name = None # Handle mkdtemp raising an exception
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self.name = mkdtemp(suffix, prefix, dir)
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def __repr__(self):
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return "<{} {!r}>".format(self.__class__.__name__, self.name)
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def __enter__(self):
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return self.name
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def cleanup(self):
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if self.name and not self._closed:
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try:
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self._rmtree(self.name)
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except (TypeError, AttributeError) as ex:
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# Issue #10188: Emit a warning on stderr
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# if the directory could not be cleaned
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# up due to missing globals
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if "None" not in str(ex):
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raise
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print(
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"ERROR: {!r} while cleaning up {!r}".format(ex, self),
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file=_sys.stderr,
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)
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return
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self._closed = True
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def __exit__(self, exc, value, tb):
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self.cleanup()
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def __del__(self):
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# Issue a ResourceWarning if implicit cleanup needed
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self.cleanup()
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# XXX (ncoghlan): The following code attempts to make
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# this class tolerant of the module nulling out process
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# that happens during CPython interpreter shutdown
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# Alas, it doesn't actually manage it. See issue #10188
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_listdir = staticmethod(_os.listdir)
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_path_join = staticmethod(_os.path.join)
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_isdir = staticmethod(_os.path.isdir)
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_islink = staticmethod(_os.path.islink)
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_remove = staticmethod(_os.remove)
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_rmdir = staticmethod(_os.rmdir)
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_warn = _warnings.warn
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def _rmtree(self, path):
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# Essentially a stripped down version of shutil.rmtree. We can't
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# use globals because they may be None'ed out at shutdown.
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for name in self._listdir(path):
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fullname = self._path_join(path, name)
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try:
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isdir = self._isdir(fullname) and not self._islink(fullname)
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except OSError:
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isdir = False
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if isdir:
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self._rmtree(fullname)
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else:
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try:
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self._remove(fullname)
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except OSError:
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pass
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try:
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self._rmdir(path)
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except OSError:
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pass
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