# -*- coding: utf-8 -*-
# ====================================================================
# Copyright (c) 2009-2010 Open Source Applications Foundation.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions: 
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# The above copyright notice and this permission notice shall be included
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#

import sys, os

from unittest import TestCase, main
from icu import *


class TestTransliterator(TestCase):

    def testTransliterate(self):

        trans = Transliterator.createInstance('Accents-Any',
                                              UTransDirection.FORWARD)
        inverse = trans.createInverse()

        string = u'\xe9v\xe9nement'
        if ICU_VERSION < '4.0':
            result = u"e<'>ve<'>nement"
        else:
            result = u"e\u2190'\u2192ve\u2190'\u2192nement"

        self.assertTrue(trans.transliterate(string) == result)
        self.assertTrue(inverse.transliterate(result) == string)

    def testUnicodeString(self):

        trans = Transliterator.createInstance('NumericPinyin-Latin',
                                              UTransDirection.FORWARD)
        string = UnicodeString("Shang4hai3 zi4lai2shui3 lai2 zi4 hai3 shang4")
        result = u'Sh\xe0ngh\u01cei z\xecl\xe1ishu\u01d0 l\xe1i z\xec h\u01cei sh\xe0ng'

        self.assertTrue(trans.transliterate(unicode(string)) == result)
        self.assertTrue(trans.transliterate(string) == result)
        self.assertTrue(string == result)

    def testPythonTransliterator(self):

        class vowelSubst(Transliterator):
            def __init__(_self, char=u'i'):
                super(vowelSubst, _self).__init__("vowel")
                _self.char = char
            def handleTransliterate(_self, text, pos, incremental):
                for i in xrange(pos.start, pos.limit):
                    if text[i] in u"aeiouüöä":
                        text[i] = _self.char
                pos.start = pos.limit

        trans = vowelSubst()

        # see http://en.wikipedia.org/wiki/Drei_Chinesen_mit_dem_Kontrabass
        string = u"Drei Chinesen mit dem Kontrabass"
        result = u'Drii Chinisin mit dim Kintribiss'
        self.assertTrue(trans.transliterate(string) == result)
 
        # test registration
        Transliterator.registerInstance(trans)

        regTrans = Transliterator.createInstance("vowel",
                                                 UTransDirection.FORWARD)

        self.assertTrue(regTrans.transliterate(string) == result)

    def testPythonTransliteratorException(self):

        class faultySubst(Transliterator):
            def __init__(_self):
                super(faultySubst, _self).__init__("faulty")
            def handleTransliterate(_self, text, pos, incremental):
                raise ValueError("faulty")

        trans = faultySubst()
        self.assertRaises(ValueError, trans.transliterate, "whatever")
        

if __name__ == "__main__":
    main()
