65 lines
2.4 KiB
Python
65 lines
2.4 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2010-2015 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 GNU tar program."""
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import os
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def extract_tar (archive, compression, cmd, verbosity, interactive, outdir):
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"""Extract a TAR archive."""
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cmdlist = [cmd, '--extract']
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add_tar_opts(cmdlist, compression, verbosity)
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cmdlist.extend(["--file", archive, '--directory', outdir])
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return cmdlist
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def list_tar (archive, compression, cmd, verbosity, interactive):
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"""List a TAR archive."""
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cmdlist = [cmd, '--list']
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add_tar_opts(cmdlist, compression, verbosity)
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cmdlist.extend(["--file", archive])
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return cmdlist
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test_tar = list_tar
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def create_tar (archive, compression, cmd, verbosity, interactive, filenames):
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"""Create a TAR archive."""
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cmdlist = [cmd, '--create']
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add_tar_opts(cmdlist, compression, verbosity)
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cmdlist.extend(["--file", archive, '--'])
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cmdlist.extend(filenames)
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return cmdlist
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def add_tar_opts (cmdlist, compression, verbosity):
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"""Add tar options to cmdlist."""
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progname = os.path.basename(cmdlist[0])
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if compression == 'gzip':
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cmdlist.append('-z')
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elif compression == 'compress':
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cmdlist.append('-Z')
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elif compression == 'bzip2':
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cmdlist.append('-j')
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elif compression in ('lzma', 'xz') and progname == 'bsdtar':
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cmdlist.append('--%s' % compression)
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elif compression in ('lzma', 'xz', 'lzip'):
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# use the compression name as program name since
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# tar is picky which programs it can use
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program = compression
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# set compression program
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cmdlist.extend(['--use-compress-program', program])
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if verbosity > 1:
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cmdlist.append('--verbose')
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if progname == 'tar':
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cmdlist.append('--force-local')
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