79 lines
2.4 KiB
Python
79 lines
2.4 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2012 Bastian Kleineidam
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""Archive commands for the tarfile Python module."""
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from patoolib import util
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import tarfile
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READ_SIZE_BYTES = 1024*1024
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def list_tar (archive, compression, cmd, **kwargs):
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"""List a TAR archive with the tarfile Python module."""
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verbose = kwargs['verbose']
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if verbose:
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util.log_info('listing %s...' % archive)
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tfile = tarfile.open(archive)
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try:
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tfile.list(verbose=verbose)
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finally:
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tfile.close()
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return None
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test_tar = list_tar
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def extract_tar (archive, compression, cmd, **kwargs):
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"""Extract a TAR archive with the tarfile Python module."""
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verbose = kwargs['verbose']
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outdir = kwargs['outdir']
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if verbose:
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util.log_info('extracting %s...' % archive)
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tfile = tarfile.open(archive)
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try:
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tfile.extractall(path=outdir)
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finally:
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tfile.close()
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if verbose:
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util.log_info('... extracted to %s' % outdir)
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return None
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def create_tar (archive, compression, cmd, *args, **kwargs):
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"""Create a TAR archive with the tarfile Python module."""
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verbose = kwargs['verbose']
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if verbose:
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util.log_info('creating %s...' % archive)
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mode = get_tar_mode(compression)
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tfile = tarfile.open(archive, mode)
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try:
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for filename in args:
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tfile.add(filename)
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finally:
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tfile.close()
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return None
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def get_tar_mode (compression):
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"""Determine tarfile open mode according to the given compression."""
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if compression == 'gzip':
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return 'w:gz'
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if compression == 'bzip2':
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return 'w:bz2'
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if compression:
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msg = 'pytarfile does not support %s for tar compression'
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util.log_error(msg % compression)
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# no compression
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return 'w'
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