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# -*- coding: utf-8 -*-
"""Python compatibility support for CLI Helpers' tests."""
from __future__ import unicode_literals
import os as _os
import shutil as _shutil
import tempfile as _tempfile
import warnings as _warnings
from cli_helpers.compat import PY2
class _TempDirectory(object):
"""Create and return a temporary directory. This has the same
behavior as mkdtemp but can be used as a context manager. For
example:
with TemporaryDirectory() as tmpdir:
...
Upon exiting the context, the directory and everything contained
in it are removed.
NOTE: Copied from the Python 3 standard library.
"""
# Handle mkdtemp raising an exception
name = None
_closed = False
def __init__(self, suffix="", prefix='tmp', dir=None):
self.name = _tempfile.mkdtemp(suffix, prefix, dir)
def __repr__(self):
return "<{} {!r}>".format(self.__class__.__name__, self.name)
def __enter__(self):
return self.name
def cleanup(self, _warn=False, _warnings=_warnings):
if self.name and not self._closed:
try:
_shutil.rmtree(self.name)
except (TypeError, AttributeError) as ex:
if "None" not in '%s' % (ex,):
raise
self._rmtree(self.name)
self._closed = True
if _warn and _warnings.warn:
_warnings.warn("Implicitly cleaning up {!r}".format(self),
ResourceWarning)
def __exit__(self, exc, value, tb):
self.cleanup()
def __del__(self):
# Issue a ResourceWarning if implicit cleanup needed
self.cleanup(_warn=True)
def _rmtree(self, path, _OSError=OSError, _sep=_os.path.sep,
_listdir=_os.listdir, _remove=_os.remove, _rmdir=_os.rmdir):
# Essentially a stripped down version of shutil.rmtree. We can't
# use globals because they may be None'ed out at shutdown.
if not isinstance(path, str):
_sep = _sep.encode()
try:
for name in _listdir(path):
fullname = path + _sep + name
try:
_remove(fullname)
except _OSError:
self._rmtree(fullname)
_rmdir(path)
except _OSError:
pass
TemporaryDirectory = _TempDirectory if PY2 else _tempfile.TemporaryDirectory
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