Mercurial > repos > shellac > sam_consensus_v3
comparison env/lib/python3.9/site-packages/packaging/requirements.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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-1:000000000000 | 0:4f3585e2f14b |
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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 import string | |
8 import sys | |
9 | |
10 from pyparsing import ( # noqa: N817 | |
11 Combine, | |
12 Literal as L, | |
13 Optional, | |
14 ParseException, | |
15 Regex, | |
16 Word, | |
17 ZeroOrMore, | |
18 originalTextFor, | |
19 stringEnd, | |
20 stringStart, | |
21 ) | |
22 | |
23 from ._typing import TYPE_CHECKING | |
24 from .markers import MARKER_EXPR, Marker | |
25 from .specifiers import LegacySpecifier, Specifier, SpecifierSet | |
26 | |
27 if sys.version_info[0] >= 3: | |
28 from urllib import parse as urlparse # pragma: no cover | |
29 else: # pragma: no cover | |
30 import urlparse | |
31 | |
32 | |
33 if TYPE_CHECKING: # pragma: no cover | |
34 from typing import List, Optional as TOptional, Set | |
35 | |
36 | |
37 class InvalidRequirement(ValueError): | |
38 """ | |
39 An invalid requirement was found, users should refer to PEP 508. | |
40 """ | |
41 | |
42 | |
43 ALPHANUM = Word(string.ascii_letters + string.digits) | |
44 | |
45 LBRACKET = L("[").suppress() | |
46 RBRACKET = L("]").suppress() | |
47 LPAREN = L("(").suppress() | |
48 RPAREN = L(")").suppress() | |
49 COMMA = L(",").suppress() | |
50 SEMICOLON = L(";").suppress() | |
51 AT = L("@").suppress() | |
52 | |
53 PUNCTUATION = Word("-_.") | |
54 IDENTIFIER_END = ALPHANUM | (ZeroOrMore(PUNCTUATION) + ALPHANUM) | |
55 IDENTIFIER = Combine(ALPHANUM + ZeroOrMore(IDENTIFIER_END)) | |
56 | |
57 NAME = IDENTIFIER("name") | |
58 EXTRA = IDENTIFIER | |
59 | |
60 URI = Regex(r"[^ ]+")("url") | |
61 URL = AT + URI | |
62 | |
63 EXTRAS_LIST = EXTRA + ZeroOrMore(COMMA + EXTRA) | |
64 EXTRAS = (LBRACKET + Optional(EXTRAS_LIST) + RBRACKET)("extras") | |
65 | |
66 VERSION_PEP440 = Regex(Specifier._regex_str, re.VERBOSE | re.IGNORECASE) | |
67 VERSION_LEGACY = Regex(LegacySpecifier._regex_str, re.VERBOSE | re.IGNORECASE) | |
68 | |
69 VERSION_ONE = VERSION_PEP440 ^ VERSION_LEGACY | |
70 VERSION_MANY = Combine( | |
71 VERSION_ONE + ZeroOrMore(COMMA + VERSION_ONE), joinString=",", adjacent=False | |
72 )("_raw_spec") | |
73 _VERSION_SPEC = Optional(((LPAREN + VERSION_MANY + RPAREN) | VERSION_MANY)) | |
74 _VERSION_SPEC.setParseAction(lambda s, l, t: t._raw_spec or "") | |
75 | |
76 VERSION_SPEC = originalTextFor(_VERSION_SPEC)("specifier") | |
77 VERSION_SPEC.setParseAction(lambda s, l, t: t[1]) | |
78 | |
79 MARKER_EXPR = originalTextFor(MARKER_EXPR())("marker") | |
80 MARKER_EXPR.setParseAction( | |
81 lambda s, l, t: Marker(s[t._original_start : t._original_end]) | |
82 ) | |
83 MARKER_SEPARATOR = SEMICOLON | |
84 MARKER = MARKER_SEPARATOR + MARKER_EXPR | |
85 | |
86 VERSION_AND_MARKER = VERSION_SPEC + Optional(MARKER) | |
87 URL_AND_MARKER = URL + Optional(MARKER) | |
88 | |
89 NAMED_REQUIREMENT = NAME + Optional(EXTRAS) + (URL_AND_MARKER | VERSION_AND_MARKER) | |
90 | |
91 REQUIREMENT = stringStart + NAMED_REQUIREMENT + stringEnd | |
92 # pyparsing isn't thread safe during initialization, so we do it eagerly, see | |
93 # issue #104 | |
94 REQUIREMENT.parseString("x[]") | |
95 | |
96 | |
97 class Requirement(object): | |
98 """Parse a requirement. | |
99 | |
100 Parse a given requirement string into its parts, such as name, specifier, | |
101 URL, and extras. Raises InvalidRequirement on a badly-formed requirement | |
102 string. | |
103 """ | |
104 | |
105 # TODO: Can we test whether something is contained within a requirement? | |
106 # If so how do we do that? Do we need to test against the _name_ of | |
107 # the thing as well as the version? What about the markers? | |
108 # TODO: Can we normalize the name and extra name? | |
109 | |
110 def __init__(self, requirement_string): | |
111 # type: (str) -> None | |
112 try: | |
113 req = REQUIREMENT.parseString(requirement_string) | |
114 except ParseException as e: | |
115 raise InvalidRequirement( | |
116 'Parse error at "{0!r}": {1}'.format( | |
117 requirement_string[e.loc : e.loc + 8], e.msg | |
118 ) | |
119 ) | |
120 | |
121 self.name = req.name # type: str | |
122 if req.url: | |
123 parsed_url = urlparse.urlparse(req.url) | |
124 if parsed_url.scheme == "file": | |
125 if urlparse.urlunparse(parsed_url) != req.url: | |
126 raise InvalidRequirement("Invalid URL given") | |
127 elif not (parsed_url.scheme and parsed_url.netloc) or ( | |
128 not parsed_url.scheme and not parsed_url.netloc | |
129 ): | |
130 raise InvalidRequirement("Invalid URL: {0}".format(req.url)) | |
131 self.url = req.url # type: TOptional[str] | |
132 else: | |
133 self.url = None | |
134 self.extras = set(req.extras.asList() if req.extras else []) # type: Set[str] | |
135 self.specifier = SpecifierSet(req.specifier) # type: SpecifierSet | |
136 self.marker = req.marker if req.marker else None # type: TOptional[Marker] | |
137 | |
138 def __str__(self): | |
139 # type: () -> str | |
140 parts = [self.name] # type: List[str] | |
141 | |
142 if self.extras: | |
143 parts.append("[{0}]".format(",".join(sorted(self.extras)))) | |
144 | |
145 if self.specifier: | |
146 parts.append(str(self.specifier)) | |
147 | |
148 if self.url: | |
149 parts.append("@ {0}".format(self.url)) | |
150 if self.marker: | |
151 parts.append(" ") | |
152 | |
153 if self.marker: | |
154 parts.append("; {0}".format(self.marker)) | |
155 | |
156 return "".join(parts) | |
157 | |
158 def __repr__(self): | |
159 # type: () -> str | |
160 return "<Requirement({0!r})>".format(str(self)) |