Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/packaging/version.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1 # This file is dual licensed under the terms of the Apache License, Version
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2 # 2.0, and the BSD License. See the LICENSE file in the root of this repository
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3 # for complete details.
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4 from __future__ import absolute_import, division, print_function
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5
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6 import collections
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7 import itertools
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8 import re
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9
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10 from ._structures import Infinity, NegativeInfinity
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11 from ._typing import TYPE_CHECKING
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12
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13 if TYPE_CHECKING: # pragma: no cover
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14 from typing import Callable, Iterator, List, Optional, SupportsInt, Tuple, Union
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15
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16 from ._structures import InfinityType, NegativeInfinityType
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17
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18 InfiniteTypes = Union[InfinityType, NegativeInfinityType]
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19 PrePostDevType = Union[InfiniteTypes, Tuple[str, int]]
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20 SubLocalType = Union[InfiniteTypes, int, str]
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21 LocalType = Union[
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22 NegativeInfinityType,
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23 Tuple[
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24 Union[
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25 SubLocalType,
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26 Tuple[SubLocalType, str],
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27 Tuple[NegativeInfinityType, SubLocalType],
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28 ],
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29 ...,
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30 ],
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31 ]
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32 CmpKey = Tuple[
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33 int, Tuple[int, ...], PrePostDevType, PrePostDevType, PrePostDevType, LocalType
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34 ]
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35 LegacyCmpKey = Tuple[int, Tuple[str, ...]]
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36 VersionComparisonMethod = Callable[
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37 [Union[CmpKey, LegacyCmpKey], Union[CmpKey, LegacyCmpKey]], bool
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38 ]
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39
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40 __all__ = ["parse", "Version", "LegacyVersion", "InvalidVersion", "VERSION_PATTERN"]
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41
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42
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43 _Version = collections.namedtuple(
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44 "_Version", ["epoch", "release", "dev", "pre", "post", "local"]
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45 )
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46
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47
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48 def parse(version):
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49 # type: (str) -> Union[LegacyVersion, Version]
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50 """
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51 Parse the given version string and return either a :class:`Version` object
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52 or a :class:`LegacyVersion` object depending on if the given version is
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53 a valid PEP 440 version or a legacy version.
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54 """
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55 try:
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56 return Version(version)
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57 except InvalidVersion:
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58 return LegacyVersion(version)
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59
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60
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61 class InvalidVersion(ValueError):
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62 """
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63 An invalid version was found, users should refer to PEP 440.
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64 """
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65
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66
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67 class _BaseVersion(object):
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68 _key = None # type: Union[CmpKey, LegacyCmpKey]
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69
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70 def __hash__(self):
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71 # type: () -> int
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72 return hash(self._key)
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73
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74 def __lt__(self, other):
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75 # type: (_BaseVersion) -> bool
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76 return self._compare(other, lambda s, o: s < o)
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77
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78 def __le__(self, other):
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79 # type: (_BaseVersion) -> bool
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80 return self._compare(other, lambda s, o: s <= o)
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81
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82 def __eq__(self, other):
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83 # type: (object) -> bool
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84 return self._compare(other, lambda s, o: s == o)
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85
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86 def __ge__(self, other):
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87 # type: (_BaseVersion) -> bool
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88 return self._compare(other, lambda s, o: s >= o)
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89
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90 def __gt__(self, other):
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91 # type: (_BaseVersion) -> bool
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92 return self._compare(other, lambda s, o: s > o)
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93
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94 def __ne__(self, other):
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95 # type: (object) -> bool
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96 return self._compare(other, lambda s, o: s != o)
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97
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98 def _compare(self, other, method):
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99 # type: (object, VersionComparisonMethod) -> Union[bool, NotImplemented]
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100 if not isinstance(other, _BaseVersion):
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101 return NotImplemented
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102
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103 return method(self._key, other._key)
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104
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105
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106 class LegacyVersion(_BaseVersion):
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107 def __init__(self, version):
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108 # type: (str) -> None
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109 self._version = str(version)
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110 self._key = _legacy_cmpkey(self._version)
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111
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112 def __str__(self):
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113 # type: () -> str
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114 return self._version
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115
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116 def __repr__(self):
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117 # type: () -> str
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118 return "<LegacyVersion({0})>".format(repr(str(self)))
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119
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120 @property
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121 def public(self):
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122 # type: () -> str
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123 return self._version
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124
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125 @property
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126 def base_version(self):
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127 # type: () -> str
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128 return self._version
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129
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130 @property
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131 def epoch(self):
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132 # type: () -> int
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133 return -1
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134
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135 @property
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136 def release(self):
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137 # type: () -> None
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138 return None
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139
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140 @property
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141 def pre(self):
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142 # type: () -> None
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143 return None
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144
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145 @property
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146 def post(self):
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147 # type: () -> None
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148 return None
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149
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150 @property
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151 def dev(self):
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152 # type: () -> None
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153 return None
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154
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155 @property
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156 def local(self):
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157 # type: () -> None
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158 return None
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159
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160 @property
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161 def is_prerelease(self):
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162 # type: () -> bool
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163 return False
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164
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165 @property
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166 def is_postrelease(self):
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167 # type: () -> bool
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168 return False
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169
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170 @property
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171 def is_devrelease(self):
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172 # type: () -> bool
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173 return False
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174
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175
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176 _legacy_version_component_re = re.compile(r"(\d+ | [a-z]+ | \.| -)", re.VERBOSE)
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177
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178 _legacy_version_replacement_map = {
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179 "pre": "c",
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180 "preview": "c",
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181 "-": "final-",
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182 "rc": "c",
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183 "dev": "@",
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184 }
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185
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186
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187 def _parse_version_parts(s):
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188 # type: (str) -> Iterator[str]
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189 for part in _legacy_version_component_re.split(s):
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190 part = _legacy_version_replacement_map.get(part, part)
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191
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192 if not part or part == ".":
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193 continue
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194
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195 if part[:1] in "0123456789":
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196 # pad for numeric comparison
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197 yield part.zfill(8)
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198 else:
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199 yield "*" + part
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200
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201 # ensure that alpha/beta/candidate are before final
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202 yield "*final"
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203
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204
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205 def _legacy_cmpkey(version):
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206 # type: (str) -> LegacyCmpKey
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207
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208 # We hardcode an epoch of -1 here. A PEP 440 version can only have a epoch
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209 # greater than or equal to 0. This will effectively put the LegacyVersion,
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210 # which uses the defacto standard originally implemented by setuptools,
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211 # as before all PEP 440 versions.
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212 epoch = -1
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213
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214 # This scheme is taken from pkg_resources.parse_version setuptools prior to
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215 # it's adoption of the packaging library.
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216 parts = [] # type: List[str]
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217 for part in _parse_version_parts(version.lower()):
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218 if part.startswith("*"):
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219 # remove "-" before a prerelease tag
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220 if part < "*final":
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221 while parts and parts[-1] == "*final-":
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222 parts.pop()
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223
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224 # remove trailing zeros from each series of numeric parts
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225 while parts and parts[-1] == "00000000":
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226 parts.pop()
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227
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228 parts.append(part)
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229
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230 return epoch, tuple(parts)
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231
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232
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233 # Deliberately not anchored to the start and end of the string, to make it
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234 # easier for 3rd party code to reuse
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235 VERSION_PATTERN = r"""
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236 v?
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237 (?:
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238 (?:(?P<epoch>[0-9]+)!)? # epoch
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239 (?P<release>[0-9]+(?:\.[0-9]+)*) # release segment
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240 (?P<pre> # pre-release
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241 [-_\.]?
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242 (?P<pre_l>(a|b|c|rc|alpha|beta|pre|preview))
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243 [-_\.]?
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244 (?P<pre_n>[0-9]+)?
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245 )?
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246 (?P<post> # post release
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247 (?:-(?P<post_n1>[0-9]+))
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248 |
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249 (?:
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250 [-_\.]?
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251 (?P<post_l>post|rev|r)
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252 [-_\.]?
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253 (?P<post_n2>[0-9]+)?
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254 )
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255 )?
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256 (?P<dev> # dev release
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257 [-_\.]?
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258 (?P<dev_l>dev)
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259 [-_\.]?
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260 (?P<dev_n>[0-9]+)?
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261 )?
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262 )
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263 (?:\+(?P<local>[a-z0-9]+(?:[-_\.][a-z0-9]+)*))? # local version
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264 """
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265
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266
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267 class Version(_BaseVersion):
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268
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269 _regex = re.compile(r"^\s*" + VERSION_PATTERN + r"\s*$", re.VERBOSE | re.IGNORECASE)
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270
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271 def __init__(self, version):
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272 # type: (str) -> None
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273
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274 # Validate the version and parse it into pieces
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275 match = self._regex.search(version)
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276 if not match:
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277 raise InvalidVersion("Invalid version: '{0}'".format(version))
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278
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279 # Store the parsed out pieces of the version
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280 self._version = _Version(
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281 epoch=int(match.group("epoch")) if match.group("epoch") else 0,
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282 release=tuple(int(i) for i in match.group("release").split(".")),
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283 pre=_parse_letter_version(match.group("pre_l"), match.group("pre_n")),
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284 post=_parse_letter_version(
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285 match.group("post_l"), match.group("post_n1") or match.group("post_n2")
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286 ),
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287 dev=_parse_letter_version(match.group("dev_l"), match.group("dev_n")),
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288 local=_parse_local_version(match.group("local")),
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289 )
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290
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291 # Generate a key which will be used for sorting
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292 self._key = _cmpkey(
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293 self._version.epoch,
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294 self._version.release,
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295 self._version.pre,
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296 self._version.post,
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297 self._version.dev,
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298 self._version.local,
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299 )
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300
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301 def __repr__(self):
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302 # type: () -> str
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303 return "<Version({0})>".format(repr(str(self)))
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304
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305 def __str__(self):
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306 # type: () -> str
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307 parts = []
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308
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309 # Epoch
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310 if self.epoch != 0:
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311 parts.append("{0}!".format(self.epoch))
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312
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313 # Release segment
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314 parts.append(".".join(str(x) for x in self.release))
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315
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316 # Pre-release
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317 if self.pre is not None:
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318 parts.append("".join(str(x) for x in self.pre))
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319
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320 # Post-release
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321 if self.post is not None:
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322 parts.append(".post{0}".format(self.post))
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323
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324 # Development release
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325 if self.dev is not None:
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326 parts.append(".dev{0}".format(self.dev))
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327
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328 # Local version segment
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329 if self.local is not None:
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330 parts.append("+{0}".format(self.local))
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331
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332 return "".join(parts)
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333
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334 @property
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335 def epoch(self):
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336 # type: () -> int
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337 _epoch = self._version.epoch # type: int
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338 return _epoch
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339
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340 @property
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341 def release(self):
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342 # type: () -> Tuple[int, ...]
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343 _release = self._version.release # type: Tuple[int, ...]
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344 return _release
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345
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346 @property
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347 def pre(self):
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348 # type: () -> Optional[Tuple[str, int]]
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349 _pre = self._version.pre # type: Optional[Tuple[str, int]]
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350 return _pre
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351
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352 @property
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353 def post(self):
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354 # type: () -> Optional[Tuple[str, int]]
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355 return self._version.post[1] if self._version.post else None
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356
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357 @property
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358 def dev(self):
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359 # type: () -> Optional[Tuple[str, int]]
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360 return self._version.dev[1] if self._version.dev else None
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361
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362 @property
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363 def local(self):
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364 # type: () -> Optional[str]
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365 if self._version.local:
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366 return ".".join(str(x) for x in self._version.local)
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367 else:
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368 return None
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369
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370 @property
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371 def public(self):
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372 # type: () -> str
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373 return str(self).split("+", 1)[0]
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374
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375 @property
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376 def base_version(self):
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377 # type: () -> str
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378 parts = []
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379
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380 # Epoch
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381 if self.epoch != 0:
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382 parts.append("{0}!".format(self.epoch))
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383
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384 # Release segment
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385 parts.append(".".join(str(x) for x in self.release))
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386
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387 return "".join(parts)
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388
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389 @property
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390 def is_prerelease(self):
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391 # type: () -> bool
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392 return self.dev is not None or self.pre is not None
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393
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394 @property
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parents:
diff changeset
395 def is_postrelease(self):
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diff changeset
396 # type: () -> bool
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diff changeset
397 return self.post is not None
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parents:
diff changeset
398
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diff changeset
399 @property
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parents:
diff changeset
400 def is_devrelease(self):
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parents:
diff changeset
401 # type: () -> bool
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parents:
diff changeset
402 return self.dev is not None
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parents:
diff changeset
403
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diff changeset
404 @property
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diff changeset
405 def major(self):
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parents:
diff changeset
406 # type: () -> int
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diff changeset
407 return self.release[0] if len(self.release) >= 1 else 0
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408
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409 @property
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410 def minor(self):
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diff changeset
411 # type: () -> int
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412 return self.release[1] if len(self.release) >= 2 else 0
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guerler
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413
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414 @property
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415 def micro(self):
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416 # type: () -> int
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417 return self.release[2] if len(self.release) >= 3 else 0
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418
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419
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420 def _parse_letter_version(
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421 letter, # type: str
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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422 number, # type: Union[str, bytes, SupportsInt]
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423 ):
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424 # type: (...) -> Optional[Tuple[str, int]]
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425
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426 if letter:
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427 # We consider there to be an implicit 0 in a pre-release if there is
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
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428 # not a numeral associated with it.
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429 if number is None:
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430 number = 0
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431
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432 # We normalize any letters to their lower case form
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433 letter = letter.lower()
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434
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435 # We consider some words to be alternate spellings of other words and
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
436 # in those cases we want to normalize the spellings to our preferred
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guerler
parents:
diff changeset
437 # spelling.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
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438 if letter == "alpha":
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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439 letter = "a"
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
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440 elif letter == "beta":
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441 letter = "b"
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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442 elif letter in ["c", "pre", "preview"]:
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443 letter = "rc"
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444 elif letter in ["rev", "r"]:
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445 letter = "post"
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446
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447 return letter, int(number)
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parents:
diff changeset
448 if not letter and number:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
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449 # We assume if we are given a number, but we are not given a letter
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450 # then this is using the implicit post release syntax (e.g. 1.0-1)
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451 letter = "post"
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452
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453 return letter, int(number)
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454
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455 return None
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456
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457
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458 _local_version_separators = re.compile(r"[\._-]")
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459
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460
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461 def _parse_local_version(local):
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462 # type: (str) -> Optional[LocalType]
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463 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
464 Takes a string like abc.1.twelve and turns it into ("abc", 1, "twelve").
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465 """
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466 if local is not None:
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467 return tuple(
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468 part.lower() if not part.isdigit() else int(part)
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guerler
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diff changeset
469 for part in _local_version_separators.split(local)
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470 )
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471 return None
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472
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473
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474 def _cmpkey(
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475 epoch, # type: int
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diff changeset
476 release, # type: Tuple[int, ...]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
477 pre, # type: Optional[Tuple[str, int]]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
478 post, # type: Optional[Tuple[str, int]]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
479 dev, # type: Optional[Tuple[str, int]]
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diff changeset
480 local, # type: Optional[Tuple[SubLocalType]]
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diff changeset
481 ):
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482 # type: (...) -> CmpKey
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483
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parents:
diff changeset
484 # When we compare a release version, we want to compare it with all of the
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
485 # trailing zeros removed. So we'll use a reverse the list, drop all the now
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
486 # leading zeros until we come to something non zero, then take the rest
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parents:
diff changeset
487 # re-reverse it back into the correct order and make it a tuple and use
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guerler
parents:
diff changeset
488 # that for our sorting key.
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diff changeset
489 _release = tuple(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
490 reversed(list(itertools.dropwhile(lambda x: x == 0, reversed(release))))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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491 )
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492
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
493 # We need to "trick" the sorting algorithm to put 1.0.dev0 before 1.0a0.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
494 # We'll do this by abusing the pre segment, but we _only_ want to do this
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guerler
parents:
diff changeset
495 # if there is not a pre or a post segment. If we have one of those then
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
496 # the normal sorting rules will handle this case correctly.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
497 if pre is None and post is None and dev is not None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
498 _pre = NegativeInfinity # type: PrePostDevType
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
499 # Versions without a pre-release (except as noted above) should sort after
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
500 # those with one.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
501 elif pre is None:
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diff changeset
502 _pre = Infinity
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
503 else:
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guerler
parents:
diff changeset
504 _pre = pre
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diff changeset
505
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506 # Versions without a post segment should sort before those with one.
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guerler
parents:
diff changeset
507 if post is None:
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diff changeset
508 _post = NegativeInfinity # type: PrePostDevType
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509
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510 else:
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511 _post = post
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512
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513 # Versions without a development segment should sort after those with one.
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parents:
diff changeset
514 if dev is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
515 _dev = Infinity # type: PrePostDevType
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diff changeset
516
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517 else:
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diff changeset
518 _dev = dev
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diff changeset
519
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diff changeset
520 if local is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
521 # Versions without a local segment should sort before those with one.
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diff changeset
522 _local = NegativeInfinity # type: LocalType
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diff changeset
523 else:
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diff changeset
524 # Versions with a local segment need that segment parsed to implement
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guerler
parents:
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525 # the sorting rules in PEP440.
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526 # - Alpha numeric segments sort before numeric segments
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527 # - Alpha numeric segments sort lexicographically
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528 # - Numeric segments sort numerically
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529 # - Shorter versions sort before longer versions when the prefixes
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530 # match exactly
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531 _local = tuple(
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532 (i, "") if isinstance(i, int) else (NegativeInfinity, i) for i in local
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533 )
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534
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535 return epoch, _release, _pre, _post, _dev, _local