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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Archive utilities.
"""
import os
import tarfile
import zipfile
import tempfile
from contextlib import closing
def is_archive(source):
return tarfile.is_tarfile(source) or zipfile.is_zipfile(source)
def extract_archive(source):
if tarfile.is_tarfile(source):
return untar(source)
elif zipfile.is_zipfile(source):
return unzip(source)
raise ValueError(
'Unsupported archive type provided or archive is not valid: {0}.'.format(source))
def tar(source, destination):
with closing(tarfile.open(destination, 'w:gz')) as tar_archive:
tar_archive.add(source, arcname=os.path.basename(source))
def untar(archive, destination=None):
if not destination:
destination = tempfile.mkdtemp()
with closing(tarfile.open(name=archive)) as tar_archive:
tar_archive.extractall(path=destination, members=tar_archive.getmembers())
return destination
def zip(source, destination):
with closing(zipfile.ZipFile(destination, 'w')) as zip_file:
for root, _, files in os.walk(source):
for filename in files:
file_path = os.path.join(root, filename)
source_dir = os.path.dirname(source)
zip_file.write(
file_path, os.path.relpath(file_path, source_dir))
return destination
def unzip(archive, destination=None):
if not destination:
destination = tempfile.mkdtemp()
with closing(zipfile.ZipFile(archive, 'r')) as zip_file:
zip_file.extractall(destination)
return destination
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