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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2004-2006 Zuza Software Foundation
#
# This file is part of translate.
#
# translate 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.
#
# translate 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 translate; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""a set of helper functions for filters..."""
import operator
def countmatch(str1, str2, countstr):
"""checks whether countstr occurs the same number of times in str1 and str2"""
return str1.count(countstr) == str2.count(countstr)
def funcmatch(str1, str2, func, *args):
"""returns whether the result of func is the same for str1 and str2"""
return func(str1, *args) == func(str2, *args)
def countsmatch(str1, str2, countlist):
"""checks whether each element in countlist occurs the same number of times in str1 and str2"""
return reduce(operator.and_, [countmatch(str1, str2, countstr) for countstr in countlist], True)
def funcsmatch(str1, str2, funclist):
"""checks whether the results of each func in funclist match for str1 and str2"""
return reduce(operator.and_, [funcmatch(str1, str2, funcstr) for funcstr in funclist], True)
def filtercount(str1, func):
"""returns the number of characters in str1 that pass func"""
return len(filter(func, str1))
def filtertestmethod(testmethod, strfilter):
"""returns a version of the testmethod that operates on filtered strings using strfilter"""
def filteredmethod(str1, str2):
return testmethod(strfilter(str1), strfilter(str2))
filteredmethod.__doc__ = testmethod.__doc__
filteredmethod.name = getattr(testmethod, 'name', testmethod.__name__)
return filteredmethod
def multifilter(str1, strfilters, *args):
"""passes str1 through a list of filters"""
for strfilter in strfilters:
str1 = strfilter(str1, *args)
return str1
def multifiltertestmethod(testmethod, strfilters):
"""returns a version of the testmethod that operates on filtered strings using strfilter"""
def filteredmethod(str1, str2):
return testmethod(multifilter(str1, strfilters), multifilter(str2, strfilters))
filteredmethod.__doc__ = testmethod.__doc__
filteredmethod.name = getattr(testmethod, 'name', testmethod.__name__)
return filteredmethod
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