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93 lines
2.4 KiB
Python
93 lines
2.4 KiB
Python
# Authors:
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# Jason Gerard DeRose <jderose@redhat.com>
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#
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# Copyright (C) 2008 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; version 2 only
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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, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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Functionality for Command Line Inteface.
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"""
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import re
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import sys
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import optparse
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def to_cli(name):
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"""
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Takes a Python identifier and transforms it into form suitable for the
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Command Line Interface.
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"""
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assert isinstance(name, str)
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return name.replace('_', '-')
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def from_cli(cli_name):
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"""
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Takes a string from the Command Line Interface and transforms it into a
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Python identifier.
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"""
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assert isinstance(cli_name, basestring)
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return cli_name.replace('-', '_')
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def _(arg):
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return arg
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class CLI(object):
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def __init__(self, api):
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self.__api = api
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def __get_api(self):
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return self.__api
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api = property(__get_api)
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def print_commands(self):
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for cmd in self.api.cmd:
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print to_cli(cmd.name)
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def __contains__(self, key):
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return from_cli(key) in self.api.cmd
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def __getitem__(self, key):
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return self.api.cmd[from_cli(key)]
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def run(self):
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if len(sys.argv) < 2:
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self.print_commands()
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print 'Usage: ipa COMMAND [OPTIONS]'
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sys.exit(2)
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cmd = sys.argv[1]
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if cmd not in self:
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self.print_commands()
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print 'ipa: ERROR: unknown command %r' % cmd
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sys.exit(2)
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self.run_cmd(cmd, sys.argv[2:])
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def run_cmd(self, cmd, args):
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kw = dict(self.parse_kw(args))
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self[cmd](**kw)
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def parse_kw(self, args):
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for arg in args:
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m = re.match(r'^--([a-z][-a-z0-9]*)=(.+)$', arg)
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if m is not None:
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yield (
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from_cli(m.group(1)),
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m.group(2),
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)
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