Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/ruamel/yaml/reader.py @ 3:758bc20232e8 draft

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"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author shellac
date Thu, 14 May 2020 16:20:52 -0400
parents 26e78fe6e8c4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # coding: utf-8
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2
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3 from __future__ import absolute_import
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4
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5 # This module contains abstractions for the input stream. You don't have to
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6 # looks further, there are no pretty code.
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7 #
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8 # We define two classes here.
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9 #
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10 # Mark(source, line, column)
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11 # It's just a record and its only use is producing nice error messages.
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12 # Parser does not use it for any other purposes.
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13 #
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14 # Reader(source, data)
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15 # Reader determines the encoding of `data` and converts it to unicode.
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16 # Reader provides the following methods and attributes:
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17 # reader.peek(length=1) - return the next `length` characters
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18 # reader.forward(length=1) - move the current position to `length`
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19 # characters.
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20 # reader.index - the number of the current character.
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21 # reader.line, stream.column - the line and the column of the current
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22 # character.
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23
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24 import codecs
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25
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26 from ruamel.yaml.error import YAMLError, FileMark, StringMark, YAMLStreamError
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27 from ruamel.yaml.compat import text_type, binary_type, PY3, UNICODE_SIZE
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28 from ruamel.yaml.util import RegExp
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29
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30 if False: # MYPY
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31 from typing import Any, Dict, Optional, List, Union, Text, Tuple, Optional # NOQA
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32 # from ruamel.yaml.compat import StreamTextType # NOQA
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33
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34 __all__ = ['Reader', 'ReaderError']
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35
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36
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37 class ReaderError(YAMLError):
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38 def __init__(self, name, position, character, encoding, reason):
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39 # type: (Any, Any, Any, Any, Any) -> None
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40 self.name = name
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41 self.character = character
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42 self.position = position
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43 self.encoding = encoding
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44 self.reason = reason
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45
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46 def __str__(self):
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47 # type: () -> str
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48 if isinstance(self.character, binary_type):
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49 return "'%s' codec can't decode byte #x%02x: %s\n" ' in "%s", position %d' % (
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50 self.encoding,
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51 ord(self.character),
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52 self.reason,
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53 self.name,
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54 self.position,
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55 )
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56 else:
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57 return 'unacceptable character #x%04x: %s\n' ' in "%s", position %d' % (
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58 self.character,
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59 self.reason,
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60 self.name,
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61 self.position,
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62 )
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63
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64
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65 class Reader(object):
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66 # Reader:
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67 # - determines the data encoding and converts it to a unicode string,
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68 # - checks if characters are in allowed range,
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69 # - adds '\0' to the end.
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70
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71 # Reader accepts
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72 # - a `str` object (PY2) / a `bytes` object (PY3),
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73 # - a `unicode` object (PY2) / a `str` object (PY3),
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74 # - a file-like object with its `read` method returning `str`,
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75 # - a file-like object with its `read` method returning `unicode`.
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76
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77 # Yeah, it's ugly and slow.
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78
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79 def __init__(self, stream, loader=None):
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80 # type: (Any, Any) -> None
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81 self.loader = loader
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82 if self.loader is not None and getattr(self.loader, '_reader', None) is None:
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83 self.loader._reader = self
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84 self.reset_reader()
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85 self.stream = stream # type: Any # as .read is called
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86
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87 def reset_reader(self):
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88 # type: () -> None
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89 self.name = None # type: Any
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90 self.stream_pointer = 0
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91 self.eof = True
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92 self.buffer = ""
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93 self.pointer = 0
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94 self.raw_buffer = None # type: Any
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95 self.raw_decode = None
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96 self.encoding = None # type: Optional[Text]
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97 self.index = 0
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98 self.line = 0
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99 self.column = 0
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100
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101 @property
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102 def stream(self):
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103 # type: () -> Any
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104 try:
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105 return self._stream
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106 except AttributeError:
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107 raise YAMLStreamError('input stream needs to specified')
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108
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109 @stream.setter
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110 def stream(self, val):
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111 # type: (Any) -> None
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112 if val is None:
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113 return
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114 self._stream = None
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115 if isinstance(val, text_type):
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116 self.name = '<unicode string>'
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117 self.check_printable(val)
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118 self.buffer = val + u'\0' # type: ignore
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119 elif isinstance(val, binary_type):
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120 self.name = '<byte string>'
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121 self.raw_buffer = val
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122 self.determine_encoding()
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123 else:
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124 if not hasattr(val, 'read'):
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125 raise YAMLStreamError('stream argument needs to have a read() method')
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126 self._stream = val
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127 self.name = getattr(self.stream, 'name', '<file>')
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parents:
diff changeset
128 self.eof = False
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
129 self.raw_buffer = None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
130 self.determine_encoding()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
131
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
132 def peek(self, index=0):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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133 # type: (int) -> Text
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
134 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
135 return self.buffer[self.pointer + index]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
136 except IndexError:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
137 self.update(index + 1)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
138 return self.buffer[self.pointer + index]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
139
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
140 def prefix(self, length=1):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
141 # type: (int) -> Any
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
142 if self.pointer + length >= len(self.buffer):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
143 self.update(length)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
144 return self.buffer[self.pointer : self.pointer + length]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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145
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
146 def forward_1_1(self, length=1):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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147 # type: (int) -> None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
148 if self.pointer + length + 1 >= len(self.buffer):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
149 self.update(length + 1)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
150 while length != 0:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
151 ch = self.buffer[self.pointer]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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152 self.pointer += 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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153 self.index += 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
154 if ch in u'\n\x85\u2028\u2029' or (
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
155 ch == u'\r' and self.buffer[self.pointer] != u'\n'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
156 ):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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157 self.line += 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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158 self.column = 0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
159 elif ch != u'\uFEFF':
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
160 self.column += 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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161 length -= 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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162
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
163 def forward(self, length=1):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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164 # type: (int) -> None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
165 if self.pointer + length + 1 >= len(self.buffer):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
166 self.update(length + 1)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
167 while length != 0:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
168 ch = self.buffer[self.pointer]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
169 self.pointer += 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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170 self.index += 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
171 if ch == u'\n' or (ch == u'\r' and self.buffer[self.pointer] != u'\n'):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
172 self.line += 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
173 self.column = 0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
174 elif ch != u'\uFEFF':
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
175 self.column += 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
176 length -= 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
177
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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178 def get_mark(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
179 # type: () -> Any
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
180 if self.stream is None:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
181 return StringMark(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
182 self.name, self.index, self.line, self.column, self.buffer, self.pointer
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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183 )
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
184 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
185 return FileMark(self.name, self.index, self.line, self.column)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
186
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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187 def determine_encoding(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
188 # type: () -> None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
189 while not self.eof and (self.raw_buffer is None or len(self.raw_buffer) < 2):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
190 self.update_raw()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
191 if isinstance(self.raw_buffer, binary_type):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
192 if self.raw_buffer.startswith(codecs.BOM_UTF16_LE):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
193 self.raw_decode = codecs.utf_16_le_decode # type: ignore
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
194 self.encoding = 'utf-16-le'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
195 elif self.raw_buffer.startswith(codecs.BOM_UTF16_BE):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
196 self.raw_decode = codecs.utf_16_be_decode # type: ignore
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
197 self.encoding = 'utf-16-be'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
198 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
199 self.raw_decode = codecs.utf_8_decode # type: ignore
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
200 self.encoding = 'utf-8'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
201 self.update(1)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
202
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
203 if UNICODE_SIZE == 2:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
204 NON_PRINTABLE = RegExp(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
205 u'[^\x09\x0A\x0D\x20-\x7E\x85' u'\xA0-\uD7FF' u'\uE000-\uFFFD' u']'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
206 )
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
207 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
208 NON_PRINTABLE = RegExp(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
209 u'[^\x09\x0A\x0D\x20-\x7E\x85'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
210 u'\xA0-\uD7FF'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
211 u'\uE000-\uFFFD'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
212 u'\U00010000-\U0010FFFF'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
213 u']'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
214 )
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
215
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
216 _printable_ascii = ('\x09\x0A\x0D' + "".join(map(chr, range(0x20, 0x7F)))).encode('ascii')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
217
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
218 @classmethod
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
219 def _get_non_printable_ascii(cls, data): # type: ignore
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
220 # type: (Text, bytes) -> Optional[Tuple[int, Text]]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
221 ascii_bytes = data.encode('ascii')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
222 non_printables = ascii_bytes.translate(None, cls._printable_ascii) # type: ignore
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
223 if not non_printables:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
224 return None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
225 non_printable = non_printables[:1]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
226 return ascii_bytes.index(non_printable), non_printable.decode('ascii')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
227
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
228 @classmethod
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
229 def _get_non_printable_regex(cls, data):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
230 # type: (Text) -> Optional[Tuple[int, Text]]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
231 match = cls.NON_PRINTABLE.search(data)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
232 if not bool(match):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
233 return None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
234 return match.start(), match.group()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
235
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
236 @classmethod
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
237 def _get_non_printable(cls, data):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
238 # type: (Text) -> Optional[Tuple[int, Text]]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
239 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
240 return cls._get_non_printable_ascii(data) # type: ignore
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
241 except UnicodeEncodeError:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
242 return cls._get_non_printable_regex(data)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
243
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
244 def check_printable(self, data):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
245 # type: (Any) -> None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
246 non_printable_match = self._get_non_printable(data)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
247 if non_printable_match is not None:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
248 start, character = non_printable_match
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
249 position = self.index + (len(self.buffer) - self.pointer) + start
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
250 raise ReaderError(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
251 self.name,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
252 position,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
253 ord(character),
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
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254 'unicode',
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255 'special characters are not allowed',
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256 )
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257
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258 def update(self, length):
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259 # type: (int) -> None
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260 if self.raw_buffer is None:
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261 return
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262 self.buffer = self.buffer[self.pointer :]
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263 self.pointer = 0
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264 while len(self.buffer) < length:
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265 if not self.eof:
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266 self.update_raw()
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267 if self.raw_decode is not None:
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268 try:
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269 data, converted = self.raw_decode(self.raw_buffer, 'strict', self.eof)
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270 except UnicodeDecodeError as exc:
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271 if PY3:
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272 character = self.raw_buffer[exc.start]
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273 else:
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274 character = exc.object[exc.start]
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275 if self.stream is not None:
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276 position = self.stream_pointer - len(self.raw_buffer) + exc.start
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277 elif self.stream is not None:
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278 position = self.stream_pointer - len(self.raw_buffer) + exc.start
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279 else:
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280 position = exc.start
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281 raise ReaderError(self.name, position, character, exc.encoding, exc.reason)
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282 else:
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283 data = self.raw_buffer
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284 converted = len(data)
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285 self.check_printable(data)
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286 self.buffer += data
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287 self.raw_buffer = self.raw_buffer[converted:]
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288 if self.eof:
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289 self.buffer += '\0'
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290 self.raw_buffer = None
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291 break
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292
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293 def update_raw(self, size=None):
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294 # type: (Optional[int]) -> None
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295 if size is None:
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296 size = 4096 if PY3 else 1024
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297 data = self.stream.read(size)
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298 if self.raw_buffer is None:
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299 self.raw_buffer = data
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300 else:
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301 self.raw_buffer += data
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302 self.stream_pointer += len(data)
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303 if not data:
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304 self.eof = True
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305
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306
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307 # try:
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308 # import psyco
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309 # psyco.bind(Reader)
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310 # except ImportError:
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311 # pass