Mercurial > repos > shellac > sam_consensus_v3

annotate env/lib/python3.9/site-packages/setuptools/namespaces.py @ 0:4f3585e2f14b draft default tip

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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author shellac
date Mon, 22 Mar 2021 18:12:50 +0000
parents
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 import os
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2 from distutils import log
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3 import itertools
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4
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5
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6 flatten = itertools.chain.from_iterable
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7
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8
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9 class Installer:
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10
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11 nspkg_ext = '-nspkg.pth'
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12
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13 def install_namespaces(self):
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14 nsp = self._get_all_ns_packages()
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15 if not nsp:
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16 return
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17 filename, ext = os.path.splitext(self._get_target())
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18 filename += self.nspkg_ext
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19 self.outputs.append(filename)
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20 log.info("Installing %s", filename)
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21 lines = map(self._gen_nspkg_line, nsp)
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22
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23 if self.dry_run:
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24 # always generate the lines, even in dry run
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25 list(lines)
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26 return
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27
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28 with open(filename, 'wt') as f:
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29 f.writelines(lines)
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30
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31 def uninstall_namespaces(self):
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32 filename, ext = os.path.splitext(self._get_target())
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33 filename += self.nspkg_ext
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34 if not os.path.exists(filename):
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35 return
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36 log.info("Removing %s", filename)
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37 os.remove(filename)
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38
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39 def _get_target(self):
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40 return self.target
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41
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42 _nspkg_tmpl = (
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43 "import sys, types, os",
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44 "has_mfs = sys.version_info > (3, 5)",
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45 "p = os.path.join(%(root)s, *%(pth)r)",
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46 "importlib = has_mfs and __import__('importlib.util')",
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47 "has_mfs and __import__('importlib.machinery')",
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48 (
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49 "m = has_mfs and "
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50 "sys.modules.setdefault(%(pkg)r, "
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51 "importlib.util.module_from_spec("
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52 "importlib.machinery.PathFinder.find_spec(%(pkg)r, "
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53 "[os.path.dirname(p)])))"
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54 ),
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55 (
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56 "m = m or "
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57 "sys.modules.setdefault(%(pkg)r, types.ModuleType(%(pkg)r))"
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58 ),
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59 "mp = (m or []) and m.__dict__.setdefault('__path__',[])",
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60 "(p not in mp) and mp.append(p)",
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61 )
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62 "lines for the namespace installer"
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63
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64 _nspkg_tmpl_multi = (
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65 'm and setattr(sys.modules[%(parent)r], %(child)r, m)',
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66 )
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67 "additional line(s) when a parent package is indicated"
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68
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69 def _get_root(self):
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70 return "sys._getframe(1).f_locals['sitedir']"
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71
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72 def _gen_nspkg_line(self, pkg):
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73 pth = tuple(pkg.split('.'))
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74 root = self._get_root()
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75 tmpl_lines = self._nspkg_tmpl
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76 parent, sep, child = pkg.rpartition('.')
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77 if parent:
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78 tmpl_lines += self._nspkg_tmpl_multi
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79 return ';'.join(tmpl_lines) % locals() + '\n'
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80
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81 def _get_all_ns_packages(self):
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82 """Return sorted list of all package namespaces"""
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83 pkgs = self.distribution.namespace_packages or []
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84 return sorted(flatten(map(self._pkg_names, pkgs)))
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85
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86 @staticmethod
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87 def _pkg_names(pkg):
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88 """
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89 Given a namespace package, yield the components of that
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90 package.
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91
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92 >>> names = Installer._pkg_names('a.b.c')
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93 >>> set(names) == set(['a', 'a.b', 'a.b.c'])
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94 True
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95 """
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96 parts = pkg.split('.')
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97 while parts:
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98 yield '.'.join(parts)
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99 parts.pop()
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100
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101
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102 class DevelopInstaller(Installer):
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103 def _get_root(self):
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104 return repr(str(self.egg_path))
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105
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106 def _get_target(self):
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107 return self.egg_link