Mercurial > repos > yating-l > jbrowsearchivecreator

annotate test/lib/python2.7/encodings/utf_16.py @ 3:7d1a9a91b989 draft

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planemo upload for repository https://github.com/Yating-L/jbrowse-archive-creator.git commit d583ac16a6c6942730ea536eb59cc37941816030-dirty
author yating-l
date Thu, 18 May 2017 18:37:28 -0400
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3
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1 """ Python 'utf-16' Codec
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2
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3
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4 Written by Marc-Andre Lemburg (mal@lemburg.com).
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5
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6 (c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
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7
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8 """
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9 import codecs, sys
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10
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11 ### Codec APIs
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12
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13 encode = codecs.utf_16_encode
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14
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15 def decode(input, errors='strict'):
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16 return codecs.utf_16_decode(input, errors, True)
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17
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18 class IncrementalEncoder(codecs.IncrementalEncoder):
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19 def __init__(self, errors='strict'):
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20 codecs.IncrementalEncoder.__init__(self, errors)
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21 self.encoder = None
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22
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23 def encode(self, input, final=False):
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24 if self.encoder is None:
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25 result = codecs.utf_16_encode(input, self.errors)[0]
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26 if sys.byteorder == 'little':
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27 self.encoder = codecs.utf_16_le_encode
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28 else:
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29 self.encoder = codecs.utf_16_be_encode
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30 return result
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31 return self.encoder(input, self.errors)[0]
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32
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33 def reset(self):
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34 codecs.IncrementalEncoder.reset(self)
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35 self.encoder = None
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36
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37 def getstate(self):
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38 # state info we return to the caller:
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39 # 0: stream is in natural order for this platform
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40 # 2: endianness hasn't been determined yet
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41 # (we're never writing in unnatural order)
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42 return (2 if self.encoder is None else 0)
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43
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44 def setstate(self, state):
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45 if state:
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46 self.encoder = None
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47 else:
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48 if sys.byteorder == 'little':
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49 self.encoder = codecs.utf_16_le_encode
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50 else:
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51 self.encoder = codecs.utf_16_be_encode
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52
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53 class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
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54 def __init__(self, errors='strict'):
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55 codecs.BufferedIncrementalDecoder.__init__(self, errors)
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56 self.decoder = None
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57
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58 def _buffer_decode(self, input, errors, final):
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59 if self.decoder is None:
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60 (output, consumed, byteorder) = \
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61 codecs.utf_16_ex_decode(input, errors, 0, final)
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62 if byteorder == -1:
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63 self.decoder = codecs.utf_16_le_decode
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64 elif byteorder == 1:
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65 self.decoder = codecs.utf_16_be_decode
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66 elif consumed >= 2:
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67 raise UnicodeError("UTF-16 stream does not start with BOM")
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68 return (output, consumed)
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69 return self.decoder(input, self.errors, final)
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70
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71 def reset(self):
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72 codecs.BufferedIncrementalDecoder.reset(self)
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73 self.decoder = None
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74
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75 class StreamWriter(codecs.StreamWriter):
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76 def __init__(self, stream, errors='strict'):
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77 codecs.StreamWriter.__init__(self, stream, errors)
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78 self.encoder = None
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79
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80 def reset(self):
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81 codecs.StreamWriter.reset(self)
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82 self.encoder = None
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83
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84 def encode(self, input, errors='strict'):
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85 if self.encoder is None:
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86 result = codecs.utf_16_encode(input, errors)
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87 if sys.byteorder == 'little':
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88 self.encoder = codecs.utf_16_le_encode
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89 else:
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90 self.encoder = codecs.utf_16_be_encode
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91 return result
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92 else:
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93 return self.encoder(input, errors)
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94
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95 class StreamReader(codecs.StreamReader):
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96
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97 def reset(self):
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98 codecs.StreamReader.reset(self)
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99 try:
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100 del self.decode
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101 except AttributeError:
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102 pass
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103
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104 def decode(self, input, errors='strict'):
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105 (object, consumed, byteorder) = \
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106 codecs.utf_16_ex_decode(input, errors, 0, False)
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107 if byteorder == -1:
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108 self.decode = codecs.utf_16_le_decode
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109 elif byteorder == 1:
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110 self.decode = codecs.utf_16_be_decode
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111 elif consumed>=2:
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112 raise UnicodeError,"UTF-16 stream does not start with BOM"
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113 return (object, consumed)
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114
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115 ### encodings module API
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116
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117 def getregentry():
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118 return codecs.CodecInfo(
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119 name='utf-16',
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120 encode=encode,
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121 decode=decode,
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122 incrementalencoder=IncrementalEncoder,
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123 incrementaldecoder=IncrementalDecoder,
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124 streamreader=StreamReader,
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125 streamwriter=StreamWriter,
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126 )