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# coding: utf-8
# cmdline.py - functions for handling command-line options
#
# Copyright (C) 2013 Arthur de Jong
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA
import argparse
import constants
version_string = '''
%s
Written by Arthur de Jong.
Copyright (C) 2013 Arthur de Jong
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
'''.strip() % constants.PACKAGE_STRING
class VersionAction(argparse.Action):
def __init__(self, option_strings, dest,
help='output version information and exit'):
super(VersionAction, self).__init__(
option_strings=option_strings,
dest=argparse.SUPPRESS,
default=argparse.SUPPRESS,
nargs=0,
help=help)
def __call__(self, parser, namespace, values, option_string=None):
print version_string
parser.exit()
class ListShellsAction(argparse.Action):
def __init__(self, option_strings, dest,
help='list the shells found in /etc/shells'):
super(ListShellsAction, self).__init__(
option_strings=option_strings,
dest=argparse.SUPPRESS,
default=argparse.SUPPRESS,
nargs=0,
help=help)
def __call__(self, parser, namespace, values, option_string=None):
import shells
for shell in shells.list_shells():
print shell
parser.exit()
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