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"""
Commandline handling for sage-uncompress-spkg
"""
#*****************************************************************************
# Copyright (C) 2016 Volker Braun <vbraun.name@gmail.com>
#
# 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 2 of the License, or
# (at your option) any later version.
# http://www.gnu.org/licenses/
#*****************************************************************************
from __future__ import print_function
import os
import sys
# Note that argparse is not part of Python 2.6, so we bundle it
try:
import argparse
except ImportError:
from sage_bootstrap.compat import argparse
from sage_bootstrap.uncompress.action import (
open_archive, unpack_archive
)
def make_parser():
parser = argparse.ArgumentParser()
parser.add_argument('-d', dest='dir', metavar='DIR',
help='directory to extract archive contents into')
parser.add_argument('pkg', nargs=1, metavar='PKG',
help='the archive to extract')
parser.add_argument('file', nargs='?', metavar='FILE',
help='(deprecated) print the contents of the given '
'archive member to stdout')
return parser
def run():
parser = make_parser()
args = parser.parse_args(sys.argv[1:])
filename = args.pkg[0]
dirname = args.dir
try:
archive = open_archive(filename)
except ValueError:
print('Error: Unknown file type: {}'.format(filename),
file=sys.stderr)
return 1
if args.file:
contents = archive.extractbytes(args.file)
if contents:
print(contents, end='')
return 0
else:
return 1
if dirname and os.path.exists(dirname):
print('Error: Directory {} already exists'.format(dirname),
file=sys.stderr)
return 1
unpack_archive(archive, dirname)
return 0
if __name__ == '__main__':
sys.exit(run())
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