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# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of logilab-common.
#
# logilab-common is free software: you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option) any
# later version.
#
# logilab-common is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with logilab-common. If not, see <http://www.gnu.org/licenses/>.
"""A few useful context managers
"""
__docformat__ = "restructuredtext en"
import sys
if sys.version_info < (2, 5):
raise ImportError("python >= 2.5 is required to import logilab.common.contexts")
import os
import tempfile
import shutil
class tempdir(object):
def __enter__(self):
self.path = tempfile.mkdtemp()
return self.path
def __exit__(self, exctype, value, traceback):
# rmtree in all cases
shutil.rmtree(self.path)
return traceback is None
class pushd(object):
def __init__(self, directory):
self.directory = directory
def __enter__(self):
self.cwd = os.getcwd()
os.chdir(self.directory)
return self.directory
def __exit__(self, exctype, value, traceback):
os.chdir(self.cwd)
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