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comparison 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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0:d30785e31577 1:56ad4e20f292
1 # This file is dual licensed under the terms of the Apache License, Version
2 # 2.0, and the BSD License. See the LICENSE file in the root of this repository
3 # for complete details.
4 from __future__ import absolute_import, division, print_function
5
6 import re
7
8 from ._typing import TYPE_CHECKING, cast
9 from .version import InvalidVersion, Version
10
11 if TYPE_CHECKING: # pragma: no cover
12 from typing import NewType, Union
13
14 NormalizedName = NewType("NormalizedName", str)
15
16 _canonicalize_regex = re.compile(r"[-_.]+")
17
18
19 def canonicalize_name(name):
20 # type: (str) -> NormalizedName
21 # This is taken from PEP 503.
22 value = _canonicalize_regex.sub("-", name).lower()
23 return cast("NormalizedName", value)
24
25
26 def canonicalize_version(_version):
27 # type: (str) -> Union[Version, str]
28 """
29 This is very similar to Version.__str__, but has one subtle difference
30 with the way it handles the release segment.
31 """
32
33 try:
34 version = Version(_version)
35 except InvalidVersion:
36 # Legacy versions cannot be normalized
37 return _version
38
39 parts = []
40
41 # Epoch
42 if version.epoch != 0:
43 parts.append("{0}!".format(version.epoch))
44
45 # Release segment
46 # NB: This strips trailing '.0's to normalize
47 parts.append(re.sub(r"(\.0)+$", "", ".".join(str(x) for x in version.release)))
48
49 # Pre-release
50 if version.pre is not None:
51 parts.append("".join(str(x) for x in version.pre))
52
53 # Post-release
54 if version.post is not None:
55 parts.append(".post{0}".format(version.post))
56
57 # Development release
58 if version.dev is not None:
59 parts.append(".dev{0}".format(version.dev))
60
61 # Local version segment
62 if version.local is not None:
63 parts.append("+{0}".format(version.local))
64
65 return "".join(parts)