Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/virtualenv/seed/wheels/util.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
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1 from __future__ import absolute_import, unicode_literals
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2
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3 from operator import attrgetter
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4 from zipfile import ZipFile
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5
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6 from virtualenv.util.six import ensure_text
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7
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8
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9 class Wheel(object):
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10 def __init__(self, path):
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11 # https://www.python.org/dev/peps/pep-0427/#file-name-convention
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12 # The wheel filename is {distribution}-{version}(-{build tag})?-{python tag}-{abi tag}-{platform tag}.whl
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13 self.path = path
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14 self._parts = path.stem.split("-")
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15
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16 @classmethod
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17 def from_path(cls, path):
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18 if path is not None and path.suffix == ".whl" and len(path.stem.split("-")) >= 5:
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19 return cls(path)
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20 return None
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21
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22 @property
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23 def distribution(self):
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24 return self._parts[0]
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25
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26 @property
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27 def version(self):
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28 return self._parts[1]
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29
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30 @property
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31 def version_tuple(self):
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32 return self.as_version_tuple(self.version)
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33
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34 @staticmethod
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35 def as_version_tuple(version):
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36 result = []
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37 for part in version.split(".")[0:3]:
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38 try:
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39 result.append(int(part))
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40 except ValueError:
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41 break
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42 if not result:
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43 raise ValueError(version)
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44 return tuple(result)
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45
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46 @property
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47 def name(self):
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48 return self.path.name
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49
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50 def support_py(self, py_version):
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51 name = "{}.dist-info/METADATA".format("-".join(self.path.stem.split("-")[0:2]))
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52 with ZipFile(ensure_text(str(self.path)), "r") as zip_file:
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53 metadata = zip_file.read(name).decode("utf-8")
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54 marker = "Requires-Python:"
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55 requires = next((i[len(marker) :] for i in metadata.splitlines() if i.startswith(marker)), None)
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56 if requires is None: # if it does not specify a python requires the assumption is compatible
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57 return True
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58 py_version_int = tuple(int(i) for i in py_version.split("."))
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59 for require in (i.strip() for i in requires.split(",")):
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60 # https://www.python.org/dev/peps/pep-0345/#version-specifiers
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61 for operator, check in [
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62 ("!=", lambda v: py_version_int != v),
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63 ("==", lambda v: py_version_int == v),
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64 ("<=", lambda v: py_version_int <= v),
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65 (">=", lambda v: py_version_int >= v),
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66 ("<", lambda v: py_version_int < v),
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67 (">", lambda v: py_version_int > v),
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68 ]:
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69 if require.startswith(operator):
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70 ver_str = require[len(operator) :].strip()
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71 version = tuple((int(i) if i != "*" else None) for i in ver_str.split("."))[0:2]
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72 if not check(version):
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73 return False
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74 break
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75 return True
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76
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77 def __repr__(self):
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78 return "{}({})".format(self.__class__.__name__, self.path)
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79
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80 def __str__(self):
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81 return str(self.path)
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82
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83
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84 def discover_wheels(from_folder, distribution, version, for_py_version):
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85 wheels = []
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86 for filename in from_folder.iterdir():
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87 wheel = Wheel.from_path(filename)
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88 if wheel and wheel.distribution == distribution:
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89 if version is None or wheel.version == version:
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90 if wheel.support_py(for_py_version):
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91 wheels.append(wheel)
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92 return sorted(wheels, key=attrgetter("version_tuple", "distribution"), reverse=True)
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93
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94
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95 class Version:
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96 #: the version bundled with virtualenv
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97 bundle = "bundle"
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98 embed = "embed"
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99 #: custom version handlers
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100 non_version = (
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101 bundle,
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102 embed,
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103 )
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104
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105 @staticmethod
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106 def of_version(value):
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107 return None if value in Version.non_version else value
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108
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109 @staticmethod
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110 def as_pip_req(distribution, version):
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111 return "{}{}".format(distribution, Version.as_version_spec(version))
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112
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113 @staticmethod
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114 def as_version_spec(version):
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115 of_version = Version.of_version(version)
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116 return "" if of_version is None else "=={}".format(of_version)