Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/virtualenv/discovery/py_info.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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2 The PythonInfo contains information about a concrete instance of a Python interpreter
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3
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4 Note: this file is also used to query target interpreters, so can only use standard library methods
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5 """
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6 from __future__ import absolute_import, print_function
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7
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8 import json
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9 import logging
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10 import os
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11 import platform
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12 import re
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13 import sys
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14 import sysconfig
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15 from collections import OrderedDict, namedtuple
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16 from distutils import dist
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17 from distutils.command.install import SCHEME_KEYS
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18 from string import digits
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19
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20 VersionInfo = namedtuple("VersionInfo", ["major", "minor", "micro", "releaselevel", "serial"])
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22
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23 def _get_path_extensions():
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24 return list(OrderedDict.fromkeys([""] + os.environ.get("PATHEXT", "").lower().split(os.pathsep)))
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25
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26
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27 EXTENSIONS = _get_path_extensions()
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28 _CONF_VAR_RE = re.compile(r"\{\w+\}")
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29
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30
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31 class PythonInfo(object):
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32 """Contains information for a Python interpreter"""
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33
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34 def __init__(self):
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35 def u(v):
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36 return v.decode("utf-8") if isinstance(v, bytes) else v
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37
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38 def abs_path(v):
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39 return None if v is None else os.path.abspath(v) # unroll relative elements from path (e.g. ..)
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40
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41 # qualifies the python
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42 self.platform = u(sys.platform)
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43 self.implementation = u(platform.python_implementation())
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44 if self.implementation == "PyPy":
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45 self.pypy_version_info = tuple(u(i) for i in sys.pypy_version_info)
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46
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47 # this is a tuple in earlier, struct later, unify to our own named tuple
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48 self.version_info = VersionInfo(*list(u(i) for i in sys.version_info))
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49 self.architecture = 64 if sys.maxsize > 2 ** 32 else 32
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50
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51 self.version = u(sys.version)
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52 self.os = u(os.name)
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53
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54 # information about the prefix - determines python home
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55 self.prefix = u(abs_path(getattr(sys, "prefix", None))) # prefix we think
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56 self.base_prefix = u(abs_path(getattr(sys, "base_prefix", None))) # venv
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57 self.real_prefix = u(abs_path(getattr(sys, "real_prefix", None))) # old virtualenv
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58
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59 # information about the exec prefix - dynamic stdlib modules
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60 self.base_exec_prefix = u(abs_path(getattr(sys, "base_exec_prefix", None)))
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61 self.exec_prefix = u(abs_path(getattr(sys, "exec_prefix", None)))
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62
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63 self.executable = u(abs_path(sys.executable)) # the executable we were invoked via
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64 self.original_executable = u(abs_path(self.executable)) # the executable as known by the interpreter
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65 self.system_executable = self._fast_get_system_executable() # the executable we are based of (if available)
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66
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67 try:
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68 __import__("venv")
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69 has = True
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70 except ImportError:
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71 has = False
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72 self.has_venv = has
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73 self.path = [u(i) for i in sys.path]
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74 self.file_system_encoding = u(sys.getfilesystemencoding())
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75 self.stdout_encoding = u(getattr(sys.stdout, "encoding", None))
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76
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77 self.sysconfig_paths = {u(i): u(sysconfig.get_path(i, expand=False)) for i in sysconfig.get_path_names()}
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78 # https://bugs.python.org/issue22199
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79 makefile = getattr(sysconfig, "get_makefile_filename", getattr(sysconfig, "_get_makefile_filename", None))
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80 self.sysconfig = {
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81 u(k): u(v)
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82 for k, v in [
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83 # a list of content to store from sysconfig
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84 ("makefile_filename", makefile()),
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85 ]
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86 if k is not None
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87 }
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88
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89 config_var_keys = set()
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90 for element in self.sysconfig_paths.values():
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91 for k in _CONF_VAR_RE.findall(element):
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92 config_var_keys.add(u(k[1:-1]))
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93 config_var_keys.add("PYTHONFRAMEWORK")
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94
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95 self.sysconfig_vars = {u(i): u(sysconfig.get_config_var(i) or "") for i in config_var_keys}
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96 if self.implementation == "PyPy" and sys.version_info.major == 2:
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97 self.sysconfig_vars[u"implementation_lower"] = u"python"
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98
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99 self.distutils_install = {u(k): u(v) for k, v in self._distutils_install().items()}
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100 confs = {k: (self.system_prefix if v.startswith(self.prefix) else v) for k, v in self.sysconfig_vars.items()}
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101 self.system_stdlib = self.sysconfig_path("stdlib", confs)
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102 self.system_stdlib_platform = self.sysconfig_path("platstdlib", confs)
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103 self.max_size = getattr(sys, "maxsize", getattr(sys, "maxint", None))
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104 self._creators = None
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105
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106 def _fast_get_system_executable(self):
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107 """Try to get the system executable by just looking at properties"""
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108 if self.real_prefix or (
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109 self.base_prefix is not None and self.base_prefix != self.prefix
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110 ): # if this is a virtual environment
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111 if self.real_prefix is None:
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112 base_executable = getattr(sys, "_base_executable", None) # some platforms may set this to help us
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113 if base_executable is not None: # use the saved system executable if present
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114 if sys.executable != base_executable: # we know we're in a virtual environment, cannot be us
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115 return base_executable
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116 return None # in this case we just can't tell easily without poking around FS and calling them, bail
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117 # if we're not in a virtual environment, this is already a system python, so return the original executable
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118 # note we must choose the original and not the pure executable as shim scripts might throw us off
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119 return self.original_executable
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120
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121 @staticmethod
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122 def _distutils_install():
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123 # follow https://github.com/pypa/pip/blob/master/src/pip/_internal/locations.py#L95
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124 # note here we don't import Distribution directly to allow setuptools to patch it
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125 d = dist.Distribution({"script_args": "--no-user-cfg"}) # conf files not parsed so they do not hijack paths
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126 if hasattr(sys, "_framework"):
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127 sys._framework = None # disable macOS static paths for framework
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128 i = d.get_command_obj("install", create=True)
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129 i.prefix = os.sep # paths generated are relative to prefix that contains the path sep, this makes it relative
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130 i.finalize_options()
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131 result = {key: (getattr(i, "install_{}".format(key))[1:]).lstrip(os.sep) for key in SCHEME_KEYS}
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132 return result
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133
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134 @property
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135 def version_str(self):
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136 return ".".join(str(i) for i in self.version_info[0:3])
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137
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138 @property
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139 def version_release_str(self):
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140 return ".".join(str(i) for i in self.version_info[0:2])
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141
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142 @property
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143 def python_name(self):
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144 version_info = self.version_info
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145 return "python{}.{}".format(version_info.major, version_info.minor)
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146
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147 @property
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148 def is_old_virtualenv(self):
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149 return self.real_prefix is not None
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150
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151 @property
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152 def is_venv(self):
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153 return self.base_prefix is not None and self.version_info.major == 3
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154
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155 def sysconfig_path(self, key, config_var=None, sep=os.sep):
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156 pattern = self.sysconfig_paths[key]
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157 if config_var is None:
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158 config_var = self.sysconfig_vars
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159 else:
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160 base = {k: v for k, v in self.sysconfig_vars.items()}
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161 base.update(config_var)
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162 config_var = base
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163 return pattern.format(**config_var).replace(u"/", sep)
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164
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165 def creators(self, refresh=False):
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166 if self._creators is None or refresh is True:
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167 from virtualenv.run.plugin.creators import CreatorSelector
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168
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169 self._creators = CreatorSelector.for_interpreter(self)
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170 return self._creators
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171
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172 @property
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173 def system_include(self):
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174 path = self.sysconfig_path(
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175 "include",
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176 {k: (self.system_prefix if v.startswith(self.prefix) else v) for k, v in self.sysconfig_vars.items()},
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177 )
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178 if not os.path.exists(path): # some broken packaging don't respect the sysconfig, fallback to distutils path
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179 # the pattern include the distribution name too at the end, remove that via the parent call
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180 fallback = os.path.join(self.prefix, os.path.dirname(self.distutils_install["headers"]))
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181 if os.path.exists(fallback):
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182 path = fallback
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183 return path
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184
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185 @property
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186 def system_prefix(self):
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187 return self.real_prefix or self.base_prefix or self.prefix
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188
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189 @property
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190 def system_exec_prefix(self):
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191 return self.real_prefix or self.base_exec_prefix or self.exec_prefix
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192
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193 def __unicode__(self):
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194 content = repr(self)
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195 if sys.version_info == 2:
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196 content = content.decode("utf-8")
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197 return content
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198
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199 def __repr__(self):
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200 return "{}({!r})".format(
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201 self.__class__.__name__, {k: v for k, v in self.__dict__.items() if not k.startswith("_")},
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202 )
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203
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204 def __str__(self):
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205 content = "{}({})".format(
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206 self.__class__.__name__,
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207 ", ".join(
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208 "{}={}".format(k, v)
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209 for k, v in (
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210 ("spec", self.spec),
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211 (
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212 "system"
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213 if self.system_executable is not None and self.system_executable != self.executable
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214 else None,
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215 self.system_executable,
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216 ),
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217 (
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218 "original"
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219 if (
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220 self.original_executable != self.system_executable
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221 and self.original_executable != self.executable
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222 )
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223 else None,
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224 self.original_executable,
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225 ),
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226 ("exe", self.executable),
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227 ("platform", self.platform),
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228 ("version", repr(self.version)),
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229 ("encoding_fs_io", "{}-{}".format(self.file_system_encoding, self.stdout_encoding)),
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230 )
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231 if k is not None
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232 ),
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233 )
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234 return content
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235
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236 @property
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237 def spec(self):
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238 return "{}{}-{}".format(self.implementation, ".".join(str(i) for i in self.version_info), self.architecture)
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239
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240 @classmethod
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241 def clear_cache(cls, app_data):
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242 # this method is not used by itself, so here and called functions can import stuff locally
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243 from virtualenv.discovery.cached_py_info import clear
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244
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245 clear(app_data)
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246 cls._cache_exe_discovery.clear()
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247
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248 def satisfies(self, spec, impl_must_match):
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249 """check if a given specification can be satisfied by the this python interpreter instance"""
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250 if spec.path:
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251 if self.executable == os.path.abspath(spec.path):
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252 return True # if the path is a our own executable path we're done
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253 if not spec.is_abs:
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254 # if path set, and is not our original executable name, this does not match
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255 basename = os.path.basename(self.original_executable)
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256 spec_path = spec.path
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257 if sys.platform == "win32":
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258 basename, suffix = os.path.splitext(basename)
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259 if spec_path.endswith(suffix):
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260 spec_path = spec_path[: -len(suffix)]
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261 if basename != spec_path:
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262 return False
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263
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264 if impl_must_match:
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265 if spec.implementation is not None and spec.implementation.lower() != self.implementation.lower():
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266 return False
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267
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268 if spec.architecture is not None and spec.architecture != self.architecture:
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269 return False
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270
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271 for our, req in zip(self.version_info[0:3], (spec.major, spec.minor, spec.micro)):
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272 if req is not None and our is not None and our != req:
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273 return False
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274 return True
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275
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276 _current_system = None
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277 _current = None
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278
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279 @classmethod
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280 def current(cls, app_data=None):
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281 """
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282 This locates the current host interpreter information. This might be different than what we run into in case
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283 the host python has been upgraded from underneath us.
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284 """
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285 if cls._current is None:
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286 cls._current = cls.from_exe(sys.executable, app_data, raise_on_error=True, resolve_to_host=False)
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287 return cls._current
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288
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289 @classmethod
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290 def current_system(cls, app_data=None):
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291 """
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292 This locates the current host interpreter information. This might be different than what we run into in case
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293 the host python has been upgraded from underneath us.
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294 """
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295 if cls._current_system is None:
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296 cls._current_system = cls.from_exe(sys.executable, app_data, raise_on_error=True, resolve_to_host=True)
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297 return cls._current_system
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298
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299 def _to_json(self):
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300 # don't save calculated paths, as these are non primitive types
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301 return json.dumps(self._to_dict(), indent=2)
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302
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303 def _to_dict(self):
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304 data = {var: (getattr(self, var) if var not in ("_creators",) else None) for var in vars(self)}
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305 # noinspection PyProtectedMember
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306 data["version_info"] = data["version_info"]._asdict() # namedtuple to dictionary
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307 return data
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308
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309 @classmethod
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310 def from_exe(cls, exe, app_data=None, raise_on_error=True, ignore_cache=False, resolve_to_host=True):
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311 """Given a path to an executable get the python information"""
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312 # this method is not used by itself, so here and called functions can import stuff locally
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313 from virtualenv.discovery.cached_py_info import from_exe
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314
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315 proposed = from_exe(cls, app_data, exe, raise_on_error=raise_on_error, ignore_cache=ignore_cache)
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316 # noinspection PyProtectedMember
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317 if isinstance(proposed, PythonInfo) and resolve_to_host:
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318 try:
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319 proposed = proposed._resolve_to_system(app_data, proposed)
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320 except Exception as exception:
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321 if raise_on_error:
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322 raise exception
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323 logging.info("ignore %s due cannot resolve system due to %r", proposed.original_executable, exception)
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324 proposed = None
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325 return proposed
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326
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327 @classmethod
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328 def _from_json(cls, payload):
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329 # the dictionary unroll here is to protect against pypy bug of interpreter crashing
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330 raw = json.loads(payload)
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331 return cls._from_dict({k: v for k, v in raw.items()})
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332
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333 @classmethod
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334 def _from_dict(cls, data):
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335 data["version_info"] = VersionInfo(**data["version_info"]) # restore this to a named tuple structure
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336 result = cls()
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337 result.__dict__ = {k: v for k, v in data.items()}
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338 return result
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339
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340 @classmethod
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341 def _resolve_to_system(cls, app_data, target):
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342 start_executable = target.executable
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343 prefixes = OrderedDict()
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344 while target.system_executable is None:
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345 prefix = target.real_prefix or target.base_prefix or target.prefix
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346 if prefix in prefixes:
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347 if len(prefixes) == 1:
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348 # if we're linking back to ourselves accept ourselves with a WARNING
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349 logging.info("%r links back to itself via prefixes", target)
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350 target.system_executable = target.executable
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351 break
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352 for at, (p, t) in enumerate(prefixes.items(), start=1):
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353 logging.error("%d: prefix=%s, info=%r", at, p, t)
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354 logging.error("%d: prefix=%s, info=%r", len(prefixes) + 1, prefix, target)
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355 raise RuntimeError("prefixes are causing a circle {}".format("|".join(prefixes.keys())))
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356 prefixes[prefix] = target
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357 target = target.discover_exe(app_data, prefix=prefix, exact=False)
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358 if target.executable != target.system_executable:
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359 target = cls.from_exe(target.system_executable, app_data)
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360 target.executable = start_executable
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361 return target
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362
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363 _cache_exe_discovery = {}
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364
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365 def discover_exe(self, app_data, prefix, exact=True):
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366 key = prefix, exact
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367 if key in self._cache_exe_discovery and prefix:
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368 logging.debug("discover exe from cache %s - exact %s: %r", prefix, exact, self._cache_exe_discovery[key])
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369 return self._cache_exe_discovery[key]
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370 logging.debug("discover exe for %s in %s", self, prefix)
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371 # we don't know explicitly here, do some guess work - our executable name should tell
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372 possible_names = self._find_possible_exe_names()
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373 possible_folders = self._find_possible_folders(prefix)
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guerler
parents:
diff changeset
374 discovered = []
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guerler
parents:
diff changeset
375 for folder in possible_folders:
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guerler
parents:
diff changeset
376 for name in possible_names:
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parents:
diff changeset
377 info = self._check_exe(app_data, folder, name, exact, discovered)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
378 if info is not None:
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parents:
diff changeset
379 self._cache_exe_discovery[key] = info
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guerler
parents:
diff changeset
380 return info
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parents:
diff changeset
381 if exact is False and discovered:
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parents:
diff changeset
382 info = self._select_most_likely(discovered, self)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
383 folders = os.pathsep.join(possible_folders)
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guerler
parents:
diff changeset
384 self._cache_exe_discovery[key] = info
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guerler
parents:
diff changeset
385 logging.debug("no exact match found, chosen most similar of %s within base folders %s", info, folders)
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parents:
diff changeset
386 return info
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guerler
parents:
diff changeset
387 msg = "failed to detect {} in {}".format("|".join(possible_names), os.pathsep.join(possible_folders))
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parents:
diff changeset
388 raise RuntimeError(msg)
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parents:
diff changeset
389
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parents:
diff changeset
390 def _check_exe(self, app_data, folder, name, exact, discovered):
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391 exe_path = os.path.join(folder, name)
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parents:
diff changeset
392 if not os.path.exists(exe_path):
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diff changeset
393 return None
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diff changeset
394 info = self.from_exe(exe_path, app_data, resolve_to_host=False, raise_on_error=False)
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parents:
diff changeset
395 if info is None: # ignore if for some reason we can't query
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parents:
diff changeset
396 return None
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parents:
diff changeset
397 for item in ["implementation", "architecture", "version_info"]:
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parents:
diff changeset
398 found = getattr(info, item)
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parents:
diff changeset
399 searched = getattr(self, item)
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parents:
diff changeset
400 if found != searched:
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guerler
parents:
diff changeset
401 if item == "version_info":
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parents:
diff changeset
402 found, searched = ".".join(str(i) for i in found), ".".join(str(i) for i in searched)
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parents:
diff changeset
403 executable = info.executable
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parents:
diff changeset
404 logging.debug("refused interpreter %s because %s differs %s != %s", executable, item, found, searched)
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parents:
diff changeset
405 if exact is False:
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parents:
diff changeset
406 discovered.append(info)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
407 break
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guerler
parents:
diff changeset
408 else:
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guerler
parents:
diff changeset
409 return info
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parents:
diff changeset
410 return None
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guerler
parents:
diff changeset
411
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guerler
parents:
diff changeset
412 @staticmethod
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parents:
diff changeset
413 def _select_most_likely(discovered, target):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
414 # no exact match found, start relaxing our requirements then to facilitate system package upgrades that
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
415 # could cause this (when using copy strategy of the host python)
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parents:
diff changeset
416 def sort_by(info):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
417 # we need to setup some priority of traits, this is as follows:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
418 # implementation, major, minor, micro, architecture, tag, serial
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parents:
diff changeset
419 matches = [
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parents:
diff changeset
420 info.implementation == target.implementation,
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parents:
diff changeset
421 info.version_info.major == target.version_info.major,
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parents:
diff changeset
422 info.version_info.minor == target.version_info.minor,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
423 info.architecture == target.architecture,
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parents:
diff changeset
424 info.version_info.micro == target.version_info.micro,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
425 info.version_info.releaselevel == target.version_info.releaselevel,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
426 info.version_info.serial == target.version_info.serial,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
427 ]
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parents:
diff changeset
428 priority = sum((1 << pos if match else 0) for pos, match in enumerate(reversed(matches)))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
429 return priority
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
430
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diff changeset
431 sorted_discovered = sorted(discovered, key=sort_by, reverse=True) # sort by priority in decreasing order
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
432 most_likely = sorted_discovered[0]
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parents:
diff changeset
433 return most_likely
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guerler
parents:
diff changeset
434
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parents:
diff changeset
435 def _find_possible_folders(self, inside_folder):
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guerler
parents:
diff changeset
436 candidate_folder = OrderedDict()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
437 executables = OrderedDict()
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parents:
diff changeset
438 executables[os.path.realpath(self.executable)] = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
439 executables[self.executable] = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
440 executables[os.path.realpath(self.original_executable)] = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
441 executables[self.original_executable] = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
442 for exe in executables.keys():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
443 base = os.path.dirname(exe)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
444 # following path pattern of the current
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
445 if base.startswith(self.prefix):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
446 relative = base[len(self.prefix) :]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
447 candidate_folder["{}{}".format(inside_folder, relative)] = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
448
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
449 # or at root level
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
450 candidate_folder[inside_folder] = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
451 return list(i for i in candidate_folder.keys() if os.path.exists(i))
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guerler
parents:
diff changeset
452
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
453 def _find_possible_exe_names(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
454 name_candidate = OrderedDict()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
455 for name in self._possible_base():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
456 for at in (3, 2, 1, 0):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
457 version = ".".join(str(i) for i in self.version_info[:at])
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
458 for arch in ["-{}".format(self.architecture), ""]:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
459 for ext in EXTENSIONS:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
460 candidate = "{}{}{}{}".format(name, version, arch, ext)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
461 name_candidate[candidate] = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
462 return list(name_candidate.keys())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
463
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
464 def _possible_base(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
465 possible_base = OrderedDict()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
466 basename = os.path.splitext(os.path.basename(self.executable))[0].rstrip(digits)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
467 possible_base[basename] = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
468 possible_base[self.implementation] = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
469 # python is always the final option as in practice is used by multiple implementation as exe name
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
470 if "python" in possible_base:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
471 del possible_base["python"]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
472 possible_base["python"] = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
473 for base in possible_base:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
474 lower = base.lower()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
475 yield lower
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
476 from virtualenv.info import fs_is_case_sensitive
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
477
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
478 if fs_is_case_sensitive():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
479 if base != lower:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
480 yield base
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
481 upper = base.upper()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
482 if upper != base:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
483 yield upper
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
484
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
485
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
486 if __name__ == "__main__":
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
487 # dump a JSON representation of the current python
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
488 # noinspection PyProtectedMember
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
489 print(PythonInfo()._to_json())