Mercurial > repos > yating-l > jbrowsearchivecreator

annotate test/lib/python2.7/encodings/utf_32.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 """
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2 Python 'utf-32' Codec
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3 """
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4 import codecs, sys
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5
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6 ### Codec APIs
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7
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8 encode = codecs.utf_32_encode
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9
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10 def decode(input, errors='strict'):
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11 return codecs.utf_32_decode(input, errors, True)
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12
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13 class IncrementalEncoder(codecs.IncrementalEncoder):
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14 def __init__(self, errors='strict'):
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15 codecs.IncrementalEncoder.__init__(self, errors)
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16 self.encoder = None
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17
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18 def encode(self, input, final=False):
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19 if self.encoder is None:
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20 result = codecs.utf_32_encode(input, self.errors)[0]
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21 if sys.byteorder == 'little':
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22 self.encoder = codecs.utf_32_le_encode
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23 else:
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24 self.encoder = codecs.utf_32_be_encode
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25 return result
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26 return self.encoder(input, self.errors)[0]
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27
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28 def reset(self):
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29 codecs.IncrementalEncoder.reset(self)
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30 self.encoder = None
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31
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32 def getstate(self):
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33 # state info we return to the caller:
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34 # 0: stream is in natural order for this platform
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35 # 2: endianness hasn't been determined yet
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36 # (we're never writing in unnatural order)
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37 return (2 if self.encoder is None else 0)
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38
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39 def setstate(self, state):
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40 if state:
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41 self.encoder = None
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42 else:
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43 if sys.byteorder == 'little':
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44 self.encoder = codecs.utf_32_le_encode
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45 else:
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46 self.encoder = codecs.utf_32_be_encode
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47
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48 class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
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49 def __init__(self, errors='strict'):
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50 codecs.BufferedIncrementalDecoder.__init__(self, errors)
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51 self.decoder = None
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52
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53 def _buffer_decode(self, input, errors, final):
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54 if self.decoder is None:
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55 (output, consumed, byteorder) = \
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56 codecs.utf_32_ex_decode(input, errors, 0, final)
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57 if byteorder == -1:
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58 self.decoder = codecs.utf_32_le_decode
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59 elif byteorder == 1:
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60 self.decoder = codecs.utf_32_be_decode
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61 elif consumed >= 4:
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62 raise UnicodeError("UTF-32 stream does not start with BOM")
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63 return (output, consumed)
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64 return self.decoder(input, self.errors, final)
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65
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66 def reset(self):
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67 codecs.BufferedIncrementalDecoder.reset(self)
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68 self.decoder = None
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69
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70 def getstate(self):
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71 # additional state info from the base class must be None here,
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72 # as it isn't passed along to the caller
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73 state = codecs.BufferedIncrementalDecoder.getstate(self)[0]
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74 # additional state info we pass to the caller:
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75 # 0: stream is in natural order for this platform
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76 # 1: stream is in unnatural order
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77 # 2: endianness hasn't been determined yet
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78 if self.decoder is None:
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79 return (state, 2)
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80 addstate = int((sys.byteorder == "big") !=
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81 (self.decoder is codecs.utf_32_be_decode))
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82 return (state, addstate)
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83
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84 def setstate(self, state):
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85 # state[1] will be ignored by BufferedIncrementalDecoder.setstate()
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86 codecs.BufferedIncrementalDecoder.setstate(self, state)
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87 state = state[1]
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88 if state == 0:
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89 self.decoder = (codecs.utf_32_be_decode
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90 if sys.byteorder == "big"
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91 else codecs.utf_32_le_decode)
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92 elif state == 1:
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93 self.decoder = (codecs.utf_32_le_decode
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94 if sys.byteorder == "big"
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95 else codecs.utf_32_be_decode)
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96 else:
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97 self.decoder = None
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98
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99 class StreamWriter(codecs.StreamWriter):
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100 def __init__(self, stream, errors='strict'):
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101 self.encoder = None
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102 codecs.StreamWriter.__init__(self, stream, errors)
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103
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104 def reset(self):
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105 codecs.StreamWriter.reset(self)
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106 self.encoder = None
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107
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108 def encode(self, input, errors='strict'):
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109 if self.encoder is None:
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110 result = codecs.utf_32_encode(input, errors)
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111 if sys.byteorder == 'little':
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112 self.encoder = codecs.utf_32_le_encode
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113 else:
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114 self.encoder = codecs.utf_32_be_encode
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115 return result
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116 else:
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117 return self.encoder(input, errors)
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118
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119 class StreamReader(codecs.StreamReader):
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120
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121 def reset(self):
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122 codecs.StreamReader.reset(self)
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123 try:
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124 del self.decode
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125 except AttributeError:
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126 pass
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127
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128 def decode(self, input, errors='strict'):
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129 (object, consumed, byteorder) = \
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130 codecs.utf_32_ex_decode(input, errors, 0, False)
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131 if byteorder == -1:
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132 self.decode = codecs.utf_32_le_decode
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133 elif byteorder == 1:
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134 self.decode = codecs.utf_32_be_decode
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135 elif consumed>=4:
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136 raise UnicodeError,"UTF-32 stream does not start with BOM"
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137 return (object, consumed)
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138
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139 ### encodings module API
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140
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141 def getregentry():
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142 return codecs.CodecInfo(
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143 name='utf-32',
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144 encode=encode,
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145 decode=decode,
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146 incrementalencoder=IncrementalEncoder,
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147 incrementaldecoder=IncrementalDecoder,
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148 streamreader=StreamReader,
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149 streamwriter=StreamWriter,
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150 )