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# Copyright (C) 2011-2012 Patrick Totzke <patricktotzke@gmail.com>
# This file is released under the GNU GPL, version 3 or a later revision.
# For further details see the COPYING file
import argparse
import re
TRUEISH = ['1', 't', 'true', 'yes', 'on']
FALSISH = ['0', 'f', 'false', 'no', 'off']
def boolean(string):
string = string.lower()
if string in FALSISH:
return False
elif string in TRUEISH:
return True
else:
raise ValueError()
class BooleanAction(argparse.Action):
"""
argparse action that can be used to store boolean values
"""
def __init__(self, *args, **kwargs):
kwargs['type'] = boolean
kwargs['choices'] = TRUEISH + FALSISH
kwargs['metavar'] = 'BOOL'
argparse.Action.__init__(self, *args, **kwargs)
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