diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/encodings/utf_8_sig.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/encodings/utf_8_sig.py Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,111 @@ +""" Python 'utf-8-sig' Codec +This work similar to UTF-8 with the following changes: + +* On encoding/writing a UTF-8 encoded BOM will be prepended/written as the + first three bytes. + +* On decoding/reading if the first three bytes are a UTF-8 encoded BOM, these + bytes will be skipped. +""" +import codecs + +### Codec APIs + +def encode(input, errors='strict'): + return (codecs.BOM_UTF8 + codecs.utf_8_encode(input, errors)[0], len(input)) + +def decode(input, errors='strict'): + prefix = 0 + if input[:3] == codecs.BOM_UTF8: + input = input[3:] + prefix = 3 + (output, consumed) = codecs.utf_8_decode(input, errors, True) + return (output, consumed+prefix) + +class IncrementalEncoder(codecs.IncrementalEncoder): + def __init__(self, errors='strict'): + codecs.IncrementalEncoder.__init__(self, errors) + self.first = True + + def encode(self, input, final=False): + if self.first: + self.first = False + return codecs.BOM_UTF8 + codecs.utf_8_encode(input, self.errors)[0] + else: + return codecs.utf_8_encode(input, self.errors)[0] + + def reset(self): + codecs.IncrementalEncoder.reset(self) + self.first = True + +class IncrementalDecoder(codecs.BufferedIncrementalDecoder): + def __init__(self, errors='strict'): + codecs.BufferedIncrementalDecoder.__init__(self, errors) + self.first = True + + def _buffer_decode(self, input, errors, final): + if self.first: + if len(input) < 3: + if codecs.BOM_UTF8.startswith(input): + # not enough data to decide if this really is a BOM + # => try again on the next call + return (u"", 0) + else: + self.first = None + else: + self.first = None + if input[:3] == codecs.BOM_UTF8: + (output, consumed) = codecs.utf_8_decode(input[3:], errors, final) + return (output, consumed+3) + return codecs.utf_8_decode(input, errors, final) + + def reset(self): + codecs.BufferedIncrementalDecoder.reset(self) + self.first = True + +class StreamWriter(codecs.StreamWriter): + def reset(self): + codecs.StreamWriter.reset(self) + try: + del self.encode + except AttributeError: + pass + + def encode(self, input, errors='strict'): + self.encode = codecs.utf_8_encode + return encode(input, errors) + +class StreamReader(codecs.StreamReader): + def reset(self): + codecs.StreamReader.reset(self) + try: + del self.decode + except AttributeError: + pass + + def decode(self, input, errors='strict'): + if len(input) < 3: + if codecs.BOM_UTF8.startswith(input): + # not enough data to decide if this is a BOM + # => try again on the next call + return (u"", 0) + elif input[:3] == codecs.BOM_UTF8: + self.decode = codecs.utf_8_decode + (output, consumed) = codecs.utf_8_decode(input[3:],errors) + return (output, consumed+3) + # (else) no BOM present + self.decode = codecs.utf_8_decode + return codecs.utf_8_decode(input, errors) + +### encodings module API + +def getregentry(): + return codecs.CodecInfo( + name='utf-8-sig', + encode=encode, + decode=decode, + incrementalencoder=IncrementalEncoder, + incrementaldecoder=IncrementalDecoder, + streamreader=StreamReader, + streamwriter=StreamWriter, + )