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# Copyright (c) 2005 The Regents of The University of Michigan
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Nathan Binkert
import optparse
import sys
from optparse import *
class nodefault(object): pass
class splitter(object):
def __init__(self, split):
self.split = split
def __call__(self, option, opt_str, value, parser):
values = value.split(self.split)
dest = getattr(parser.values, option.dest)
if dest is None:
setattr(parser.values, option.dest, values)
else:
dest.extend(values)
class OptionParser(dict):
def __init__(self, *args, **kwargs):
kwargs.setdefault('formatter', optparse.TitledHelpFormatter())
self._optparse = optparse.OptionParser(*args, **kwargs)
self._optparse.disable_interspersed_args()
self._allopts = {}
# current option group
self._group = self._optparse
def set_defaults(self, *args, **kwargs):
return self._optparse.set_defaults(*args, **kwargs)
def set_group(self, *args, **kwargs):
'''set the current option group'''
if not args and not kwargs:
self._group = self._optparse
else:
self._group = self._optparse.add_option_group(*args, **kwargs)
def add_option(self, *args, **kwargs):
'''add an option to the current option group, or global none set'''
# if action=split, but allows the option arguments
# themselves to be lists separated by the split variable'''
if kwargs.get('action', None) == 'append' and 'split' in kwargs:
split = kwargs.pop('split')
kwargs['default'] = []
kwargs['type'] = 'string'
kwargs['action'] = 'callback'
kwargs['callback'] = splitter(split)
option = self._group.add_option(*args, **kwargs)
dest = option.dest
if dest not in self._allopts:
self._allopts[dest] = option
return option
def bool_option(self, name, default, help):
'''add a boolean option called --name and --no-name.
Display help depending on which is the default'''
tname = '--%s' % name
fname = '--no-%s' % name
dest = name.replace('-', '_')
if default:
thelp = optparse.SUPPRESS_HELP
fhelp = help
else:
thelp = help
fhelp = optparse.SUPPRESS_HELP
topt = self.add_option(tname, action="store_true", default=default,
help=thelp)
fopt = self.add_option(fname, action="store_false", dest=dest,
help=fhelp)
return topt,fopt
def __getattr__(self, attr):
if attr.startswith('_'):
return super(OptionParser, self).__getattribute__(attr)
if attr in self:
return self[attr]
return super(OptionParser, self).__getattribute__(attr)
def __setattr__(self, attr, value):
if attr.startswith('_'):
super(OptionParser, self).__setattr__(attr, value)
elif attr in self._allopts:
defaults = { attr : value }
self.set_defaults(**defaults)
if attr in self:
self[attr] = value
else:
super(OptionParser, self).__setattr__(attr, value)
def parse_args(self):
opts,args = self._optparse.parse_args()
for key,val in opts.__dict__.iteritems():
if val is not None or key not in self:
self[key] = val
return args
def usage(self, exitcode=None):
self._optparse.print_help()
if exitcode is not None:
sys.exit(exitcode)
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