#!/usr/bin/env python

#

# test_multibytecodec_support.py

#   Common Unittest Routines for CJK codecs

#

import sys, codecs

import unittest, re

from test import test_support

from StringIO import StringIO

class TestBase:

    encoding        = ''   # codec name

    codec           = None # codec tuple (with 4 elements)

    tstring         = ''   # string to test StreamReader

    codectests      = None # must set. codec test tuple

    roundtriptest   = 1    # set if roundtrip is possible with unicode

    has_iso10646    = 0    # set if this encoding contains whole iso10646 map

    xmlcharnametest = None # string to test xmlcharrefreplace

    unmappedunicode = u'\udeee' # a unicode codepoint that is not mapped.

    def setUp(self):

        if self.codec is None:

            self.codec = codecs.lookup(self.encoding)

        self.encode = self.codec.encode

        self.decode = self.codec.decode

        self.reader = self.codec.streamreader

        self.writer = self.codec.streamwriter

        self.incrementalencoder = self.codec.incrementalencoder

        self.incrementaldecoder = self.codec.incrementaldecoder

    def test_chunkcoding(self):

        for native, utf8 in zip(*[StringIO(f).readlines()

                                  for f in self.tstring]):

            u = self.decode(native)[0]

            self.assertEqual(u, utf8.decode('utf-8'))

            if self.roundtriptest:

                self.assertEqual(native, self.encode(u)[0])

    def test_errorhandle(self):

        for source, scheme, expected in self.codectests:

            if type(source) == type(''):

                func = self.decode

            else:

                func = self.encode

            if expected:

                result = func(source, scheme)[0]

                self.assertEqual(result, expected)

            else:

                self.assertRaises(UnicodeError, func, source, scheme)

    def test_xmlcharrefreplace(self):

        if self.has_iso10646:

            return

        s = u"\u0b13\u0b23\u0b60 nd eggs"

        self.assertEqual(

            self.encode(s, "xmlcharrefreplace")[0],

            "ଓଣୠ nd eggs"

        )

    def test_customreplace_encode(self):

        if self.has_iso10646:

            return

        from htmlentitydefs import codepoint2name

        def xmlcharnamereplace(exc):

            if not isinstance(exc, UnicodeEncodeError):

                raise TypeError("don't know how to handle %r" % exc)

            l = []

            for c in exc.object[exc.start:exc.end]:

                if ord(c) in codepoint2name:

                    l.append(u"&%s;" % codepoint2name[ord(c)])

                else:

                    l.append(u"&#%d;" % ord(c))

            return (u"".join(l), exc.end)

        codecs.register_error("test.xmlcharnamereplace", xmlcharnamereplace)

        if self.xmlcharnametest:

            sin, sout = self.xmlcharnametest

        else:

            sin = u"\xab\u211c\xbb = \u2329\u1234\u232a"

            sout = "«ℜ» = ⟨ሴ⟩"

        self.assertEqual(self.encode(sin,

                                    "test.xmlcharnamereplace")[0], sout)

    def test_callback_wrong_objects(self):

        def myreplace(exc):

            return (ret, exc.end)

        codecs.register_error("test.cjktest", myreplace)

        for ret in ([1, 2, 3], [], None, object(), 'string', ''):

            self.assertRaises(TypeError, self.encode, self.unmappedunicode,

                              'test.cjktest')

    def test_callback_long_index(self):

        def myreplace(exc):

            return (u'x', long(exc.end))

        codecs.register_error("test.cjktest", myreplace)

        self.assertEqual(self.encode(u'abcd' + self.unmappedunicode + u'efgh',

                                     'test.cjktest'), ('abcdxefgh', 9))

        def myreplace(exc):

            return (u'x', sys.maxint + 1)

        codecs.register_error("test.cjktest", myreplace)

        self.assertRaises(IndexError, self.encode, self.unmappedunicode,

                          'test.cjktest')

    def test_callback_None_index(self):

        def myreplace(exc):

            return (u'x', None)

        codecs.register_error("test.cjktest", myreplace)

        self.assertRaises(TypeError, self.encode, self.unmappedunicode,

                          'test.cjktest')

    def test_callback_backward_index(self):

        def myreplace(exc):

            if myreplace.limit > 0:

                myreplace.limit -= 1

                return (u'REPLACED', 0)

            else:

                return (u'TERMINAL', exc.end)

        myreplace.limit = 3

        codecs.register_error("test.cjktest", myreplace)

        self.assertEqual(self.encode(u'abcd' + self.unmappedunicode + u'efgh',

                                     'test.cjktest'),

                ('abcdREPLACEDabcdREPLACEDabcdREPLACEDabcdTERMINALefgh', 9))

    def test_callback_forward_index(self):

        def myreplace(exc):

            return (u'REPLACED', exc.end + 2)

        codecs.register_error("test.cjktest", myreplace)

        self.assertEqual(self.encode(u'abcd' + self.unmappedunicode + u'efgh',

                                     'test.cjktest'), ('abcdREPLACEDgh', 9))

    def test_callback_index_outofbound(self):

        def myreplace(exc):

            return (u'TERM', 100)

        codecs.register_error("test.cjktest", myreplace)

        self.assertRaises(IndexError, self.encode, self.unmappedunicode,

                          'test.cjktest')

    def test_incrementalencoder(self):

        UTF8Reader = codecs.getreader('utf-8')

        for sizehint in [None] + range(1, 33) + \

                        [64, 128, 256, 512, 1024]:

            istream = UTF8Reader(StringIO(self.tstring[1]))

            ostream = StringIO()

            encoder = self.incrementalencoder()

            while 1:

                if sizehint is not None:

                    data = istream.read(sizehint)

                else:

                    data = istream.read()

                if not data:

                    break

                e = encoder.encode(data)

                ostream.write(e)

            self.assertEqual(ostream.getvalue(), self.tstring[0])

    def test_incrementaldecoder(self):

        UTF8Writer = codecs.getwriter('utf-8')

        for sizehint in [None, -1] + range(1, 33) + \

                        [64, 128, 256, 512, 1024]:

            istream = StringIO(self.tstring[0])

            ostream = UTF8Writer(StringIO())

            decoder = self.incrementaldecoder()

            while 1:

                data = istream.read(sizehint)

                if not data:

                    break

                else:

                    u = decoder.decode(data)

                    ostream.write(u)

            self.assertEqual(ostream.getvalue(), self.tstring[1])

    def test_incrementalencoder_error_callback(self):

        inv = self.unmappedunicode

        e = self.incrementalencoder()

        self.assertRaises(UnicodeEncodeError, e.encode, inv, True)

        e.errors = 'ignore'

        self.assertEqual(e.encode(inv, True), '')

        e.reset()

        def tempreplace(exc):

            return (u'called', exc.end)

        codecs.register_error('test.incremental_error_callback', tempreplace)

        e.errors = 'test.incremental_error_callback'

        self.assertEqual(e.encode(inv, True), 'called')

        # again

        e.errors = 'ignore'

        self.assertEqual(e.encode(inv, True), '')

    def test_streamreader(self):

        UTF8Writer = codecs.getwriter('utf-8')

        for name in ["read", "readline", "readlines"]:

            for sizehint in [None, -1] + range(1, 33) + \

                            [64, 128, 256, 512, 1024]:

                istream = self.reader(StringIO(self.tstring[0]))

                ostream = UTF8Writer(StringIO())

                func = getattr(istream, name)

                while 1:

                    data = func(sizehint)

                    if not data:

                        break

                    if name == "readlines":

                        ostream.writelines(data)

                    else:

                        ostream.write(data)

                self.assertEqual(ostream.getvalue(), self.tstring[1])

    def test_streamwriter(self):

        readfuncs = ('read', 'readline', 'readlines')

        UTF8Reader = codecs.getreader('utf-8')

        for name in readfuncs:

            for sizehint in [None] + range(1, 33) + \

                            [64, 128, 256, 512, 1024]:

                istream = UTF8Reader(StringIO(self.tstring[1]))

                ostream = self.writer(StringIO())

                func = getattr(istream, name)

                while 1:

                    if sizehint is not None:

                        data = func(sizehint)

                    else:

                        data = func()

                    if not data:

                        break

                    if name == "readlines":

                        ostream.writelines(data)

                    else:

                        ostream.write(data)

                self.assertEqual(ostream.getvalue(), self.tstring[0])

if len(u'\U00012345') == 2: # ucs2 build

    _unichr = unichr

    def unichr(v):

        if v >= 0x10000:

            return _unichr(0xd800 + ((v - 0x10000) >> 10)) + \

                   _unichr(0xdc00 + ((v - 0x10000) & 0x3ff))

        else:

            return _unichr(v)

    _ord = ord

    def ord(c):

        if len(c) == 2:

            return 0x10000 + ((_ord(c[0]) - 0xd800) << 10) + \

                          (ord(c[1]) - 0xdc00)

        else:

            return _ord(c)

class TestBase_Mapping(unittest.TestCase):

    pass_enctest = []

    pass_dectest = []

    supmaps = []

    def __init__(self, *args, **kw):

        unittest.TestCase.__init__(self, *args, **kw)

        self.open_mapping_file() # test it to report the error early

    def open_mapping_file(self):

        return test_support.open_urlresource(self.mapfileurl)

    def test_mapping_file(self):

        if self.mapfileurl.endswith('.xml'):

            self._test_mapping_file_ucm()

        else:

            self._test_mapping_file_plain()

    def _test_mapping_file_plain(self):

        unichrs = lambda s: u''.join(map(unichr, map(eval, s.split('+'))))

        urt_wa = {}

        for line in self.open_mapping_file():

            if not line:

                break

            data = line.split('#')[0].strip().split()

            if len(data) != 2:

                continue

            csetval = eval(data[0])

            if csetval <= 0x7F:

                csetch = chr(csetval & 0xff)

            elif csetval >= 0x1000000:

                csetch = chr(csetval >> 24) + chr((csetval >> 16) & 0xff) + \

                         chr((csetval >> 8) & 0xff) + chr(csetval & 0xff)

            elif csetval >= 0x10000:

                csetch = chr(csetval >> 16) + \

                         chr((csetval >> 8) & 0xff) + chr(csetval & 0xff)

            elif csetval >= 0x100:

                csetch = chr(csetval >> 8) + chr(csetval & 0xff)

            else:

                continue

            unich = unichrs(data[1])

            if ord(unich) == 0xfffd or urt_wa.has_key(unich):

                continue

            urt_wa[unich] = csetch

            self._testpoint(csetch, unich)

    def _test_mapping_file_ucm(self):

        ucmdata = self.open_mapping_file().read()

        uc = re.findall('<a u="([A-F0-9]{4})" b="([0-9A-F ]+)"/>', ucmdata)

        for uni, coded in uc:

            unich = unichr(int(uni, 16))

            codech = ''.join(chr(int(c, 16)) for c in coded.split())

            self._testpoint(codech, unich)

    def test_mapping_supplemental(self):

        for mapping in self.supmaps:

            self._testpoint(*mapping)

    def _testpoint(self, csetch, unich):

        if (csetch, unich) not in self.pass_enctest:

            try:

                self.assertEqual(unich.encode(self.encoding), csetch)

            except UnicodeError, exc:

                self.fail('Encoding failed while testing %s -> %s: %s' % (

                            repr(unich), repr(csetch), exc.reason))

        if (csetch, unich) not in self.pass_dectest:

            try:

                self.assertEqual(csetch.decode(self.encoding), unich)

            except UnicodeError, exc:

                self.fail('Decoding failed while testing %s -> %s: %s' % (

                            repr(csetch), repr(unich), exc.reason))

def load_teststring(encoding):

    from test import cjkencodings_test

    return cjkencodings_test.teststring[encoding]