Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/packaging/utils.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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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 re
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7
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8 from ._typing import TYPE_CHECKING, cast
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9 from .version import InvalidVersion, Version
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10
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11 if TYPE_CHECKING: # pragma: no cover
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12 from typing import NewType, Union
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13
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14 NormalizedName = NewType("NormalizedName", str)
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15
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16 _canonicalize_regex = re.compile(r"[-_.]+")
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17
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18
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19 def canonicalize_name(name):
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20 # type: (str) -> NormalizedName
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21 # This is taken from PEP 503.
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22 value = _canonicalize_regex.sub("-", name).lower()
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23 return cast("NormalizedName", value)
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25
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26 def canonicalize_version(_version):
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27 # type: (str) -> Union[Version, str]
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28 """
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29 This is very similar to Version.__str__, but has one subtle difference
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30 with the way it handles the release segment.
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31 """
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32
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33 try:
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34 version = Version(_version)
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35 except InvalidVersion:
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36 # Legacy versions cannot be normalized
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37 return _version
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38
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39 parts = []
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40
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41 # Epoch
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42 if version.epoch != 0:
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43 parts.append("{0}!".format(version.epoch))
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44
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45 # Release segment
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46 # NB: This strips trailing '.0's to normalize
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47 parts.append(re.sub(r"(\.0)+$", "", ".".join(str(x) for x in version.release)))
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48
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49 # Pre-release
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50 if version.pre is not None:
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51 parts.append("".join(str(x) for x in version.pre))
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52
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53 # Post-release
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54 if version.post is not None:
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55 parts.append(".post{0}".format(version.post))
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56
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57 # Development release
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58 if version.dev is not None:
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59 parts.append(".dev{0}".format(version.dev))
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60
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61 # Local version segment
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62 if version.local is not None:
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63 parts.append("+{0}".format(version.local))
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64
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65 return "".join(parts)