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# Copyright (C) 2010-2023 Bastian Kleineidam
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Archive commands for the GNU tar program."""
import functools
import os
import subprocess
def extract_tar(archive, compression, cmd, verbosity, interactive, outdir):
"""Extract a TAR archive."""
cmdlist = [cmd, '--extract']
cmdlist.extend(get_tar_opts(cmd, compression, verbosity))
cmdlist.extend(["--file", archive, '--directory', outdir])
return cmdlist
def list_tar(archive, compression, cmd, verbosity, interactive):
"""List a TAR archive."""
cmdlist = [cmd, '--list']
cmdlist.extend(get_tar_opts(cmd, compression, verbosity))
cmdlist.extend(["--file", archive])
return cmdlist
test_tar = list_tar
def create_tar(archive, compression, cmd, verbosity, interactive, filenames):
"""Create a TAR archive."""
cmdlist = [cmd, '--create']
cmdlist.extend(get_tar_opts(cmd, compression, verbosity))
cmdlist.extend(["--file", archive, '--'])
cmdlist.extend(filenames)
return cmdlist
@functools.cache
def get_tar_opts(cmd, compression, verbosity):
"""Get tar options for cmd according to the given compression and verbosity."""
cmdlist = []
progname = os.path.basename(cmd).lower()
if progname.endswith('.exe'):
progname = progname[:-4]
if compression:
cmdlist.append(f'--{compression}')
if verbosity > 1:
cmdlist.append('--verbose')
if progname == 'tar':
# Some tar implementations (ie. Windows tar.exe, and macos)
# do not support --force-local
testcmdlist = [cmd, "--force-local", "--help"]
from .. import util # noqa: PLC0415
if util.run(testcmdlist, stderr=subprocess.DEVNULL, verbosity=-1) == 0:
cmdlist.append('--force-local')
return cmdlist
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