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# vim: set fileencoding=utf-8 :
#
# (C) 2011 Guido Guenther <agx@sigxcpu.org>
# 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.
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
Git command argument handling helpers
"""
import collections
class GitArgs(object):
"""
Handle arguments to git commands
>>> GitArgs('-h', '--no-foo').args
['-h', '--no-foo']
>>> GitArgs('-n', 123).args
['-n', '123']
>>> GitArgs().add('--more-foo', '--less-bar').args
['--more-foo', '--less-bar']
>>> GitArgs().add(['--foo', '--bar']).args
['--foo', '--bar']
>>> GitArgs().add_cond(1 > 2, '--opt', '--no-opt').args
['--no-opt']
>>> GitArgs().add_true(True, '--true').args
['--true']
>>> GitArgs().add_false(True, '--true').args
[]
>>> GitArgs().add_false(False, '--false').args
['--false']
"""
def __init__(self, *args):
self._args = []
self.add(args)
@property
def args(self):
return self._args
def add(self, *args):
"""
Add arguments to argument list
"""
for arg in args:
if isinstance(arg, basestring):
self._args.append(arg)
elif isinstance(arg, collections.Iterable):
for i in iter(arg):
self._args.append(str(i))
else:
self._args.append(str(arg))
return self
def add_true(self, condition, *args):
"""
Add I{args} if I{condition} is C{True}
@param condition: the condition to test
@type condition: C{bool}
@param args: arguments to add
"""
if condition:
self.add(*args)
return self
def add_false(self, condition, *args):
"""
Add I{args} if I{condition} is C{False}
@param condition: the condition to test
@type condition: C{bool}
@param args: arguments to add
"""
self.add_true(not condition, *args)
return self
def add_cond(self, condition, opt, noopt=[]):
"""
Add option I{opt} to I{alist} if I{condition} is C{True}
else add I{noopt}.
@param condition: condition
@type condition: C{bool}
@param opt: option to add if I{condition} is C{True}
@type opt: C{str} or C{list}
@param noopt: option to add if I{condition} is C{False}
@type noopt: C{str} or C{list}
"""
if condition:
self.add(opt)
else:
self.add(noopt)
return self
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