Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/pip/_internal/vcs/versioncontrol.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 """Handles all VCS (version control) support"""
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2 from __future__ import absolute_import
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3
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4 import errno
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5 import logging
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6 import os
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7 import shutil
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8 import sys
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9
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10 from pip._vendor import pkg_resources
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11 from pip._vendor.six.moves.urllib import parse as urllib_parse
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12
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13 from pip._internal.exceptions import BadCommand
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14 from pip._internal.utils.misc import (
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15 ask_path_exists, backup_dir, call_subprocess, display_path, rmtree,
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16 )
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17 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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18
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19 if MYPY_CHECK_RUNNING:
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20 from typing import (
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21 Any, Dict, Iterable, List, Mapping, Optional, Text, Tuple, Type
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22 )
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23 from pip._internal.utils.ui import SpinnerInterface
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24
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25 AuthInfo = Tuple[Optional[str], Optional[str]]
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26
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27 __all__ = ['vcs']
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28
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29
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30 logger = logging.getLogger(__name__)
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31
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32
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33 def make_vcs_requirement_url(repo_url, rev, project_name, subdir=None):
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34 """
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35 Return the URL for a VCS requirement.
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36
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37 Args:
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38 repo_url: the remote VCS url, with any needed VCS prefix (e.g. "git+").
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39 project_name: the (unescaped) project name.
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40 """
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41 egg_project_name = pkg_resources.to_filename(project_name)
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42 req = '{}@{}#egg={}'.format(repo_url, rev, egg_project_name)
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43 if subdir:
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44 req += '&subdirectory={}'.format(subdir)
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45
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46 return req
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47
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48
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49 class RemoteNotFoundError(Exception):
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50 pass
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51
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52
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53 class RevOptions(object):
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54
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55 """
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56 Encapsulates a VCS-specific revision to install, along with any VCS
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57 install options.
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58
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59 Instances of this class should be treated as if immutable.
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60 """
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61
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62 def __init__(
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63 self,
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64 vc_class, # type: Type[VersionControl]
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65 rev=None, # type: Optional[str]
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66 extra_args=None, # type: Optional[List[str]]
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67 ):
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68 # type: (...) -> None
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69 """
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70 Args:
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71 vc_class: a VersionControl subclass.
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72 rev: the name of the revision to install.
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73 extra_args: a list of extra options.
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74 """
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75 if extra_args is None:
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76 extra_args = []
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77
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78 self.extra_args = extra_args
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79 self.rev = rev
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80 self.vc_class = vc_class
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81
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82 def __repr__(self):
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83 return '<RevOptions {}: rev={!r}>'.format(self.vc_class.name, self.rev)
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84
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85 @property
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86 def arg_rev(self):
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87 # type: () -> Optional[str]
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88 if self.rev is None:
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89 return self.vc_class.default_arg_rev
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90
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91 return self.rev
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92
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93 def to_args(self):
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94 # type: () -> List[str]
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95 """
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96 Return the VCS-specific command arguments.
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97 """
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98 args = [] # type: List[str]
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99 rev = self.arg_rev
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100 if rev is not None:
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101 args += self.vc_class.get_base_rev_args(rev)
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102 args += self.extra_args
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103
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104 return args
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105
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106 def to_display(self):
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107 # type: () -> str
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108 if not self.rev:
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109 return ''
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110
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111 return ' (to revision {})'.format(self.rev)
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112
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113 def make_new(self, rev):
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114 # type: (str) -> RevOptions
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115 """
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116 Make a copy of the current instance, but with a new rev.
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117
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118 Args:
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119 rev: the name of the revision for the new object.
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120 """
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121 return self.vc_class.make_rev_options(rev, extra_args=self.extra_args)
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122
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123
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124 class VcsSupport(object):
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125 _registry = {} # type: Dict[str, VersionControl]
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126 schemes = ['ssh', 'git', 'hg', 'bzr', 'sftp', 'svn']
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127
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128 def __init__(self):
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129 # type: () -> None
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130 # Register more schemes with urlparse for various version control
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131 # systems
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132 urllib_parse.uses_netloc.extend(self.schemes)
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133 # Python >= 2.7.4, 3.3 doesn't have uses_fragment
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134 if getattr(urllib_parse, 'uses_fragment', None):
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135 urllib_parse.uses_fragment.extend(self.schemes)
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136 super(VcsSupport, self).__init__()
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137
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138 def __iter__(self):
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139 return self._registry.__iter__()
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140
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141 @property
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142 def backends(self):
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143 # type: () -> List[VersionControl]
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144 return list(self._registry.values())
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145
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146 @property
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147 def dirnames(self):
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148 # type: () -> List[str]
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149 return [backend.dirname for backend in self.backends]
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150
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151 @property
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152 def all_schemes(self):
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153 # type: () -> List[str]
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154 schemes = [] # type: List[str]
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155 for backend in self.backends:
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156 schemes.extend(backend.schemes)
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157 return schemes
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158
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159 def register(self, cls):
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160 # type: (Type[VersionControl]) -> None
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161 if not hasattr(cls, 'name'):
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162 logger.warning('Cannot register VCS %s', cls.__name__)
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163 return
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164 if cls.name not in self._registry:
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165 self._registry[cls.name] = cls()
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166 logger.debug('Registered VCS backend: %s', cls.name)
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167
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168 def unregister(self, name):
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169 # type: (str) -> None
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170 if name in self._registry:
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171 del self._registry[name]
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172
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173 def get_backend_for_dir(self, location):
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174 # type: (str) -> Optional[VersionControl]
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175 """
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176 Return a VersionControl object if a repository of that type is found
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177 at the given directory.
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178 """
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179 for vcs_backend in self._registry.values():
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180 if vcs_backend.controls_location(location):
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181 logger.debug('Determine that %s uses VCS: %s',
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182 location, vcs_backend.name)
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183 return vcs_backend
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184 return None
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185
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186 def get_backend(self, name):
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187 # type: (str) -> Optional[VersionControl]
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188 """
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189 Return a VersionControl object or None.
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190 """
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191 name = name.lower()
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192 return self._registry.get(name)
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193
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194
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195 vcs = VcsSupport()
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196
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197
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198 class VersionControl(object):
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199 name = ''
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200 dirname = ''
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201 repo_name = ''
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202 # List of supported schemes for this Version Control
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203 schemes = () # type: Tuple[str, ...]
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204 # Iterable of environment variable names to pass to call_subprocess().
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205 unset_environ = () # type: Tuple[str, ...]
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206 default_arg_rev = None # type: Optional[str]
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207
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208 @classmethod
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209 def should_add_vcs_url_prefix(cls, remote_url):
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210 """
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211 Return whether the vcs prefix (e.g. "git+") should be added to a
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212 repository's remote url when used in a requirement.
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213 """
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214 return not remote_url.lower().startswith('{}:'.format(cls.name))
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215
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216 @classmethod
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217 def get_subdirectory(cls, repo_dir):
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218 """
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219 Return the path to setup.py, relative to the repo root.
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220 """
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221 return None
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222
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223 @classmethod
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224 def get_requirement_revision(cls, repo_dir):
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225 """
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226 Return the revision string that should be used in a requirement.
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227 """
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228 return cls.get_revision(repo_dir)
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229
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230 @classmethod
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231 def get_src_requirement(cls, repo_dir, project_name):
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232 """
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233 Return the requirement string to use to redownload the files
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234 currently at the given repository directory.
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235
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236 Args:
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237 project_name: the (unescaped) project name.
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238
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239 The return value has a form similar to the following:
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240
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241 {repository_url}@{revision}#egg={project_name}
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242 """
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243 repo_url = cls.get_remote_url(repo_dir)
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244 if repo_url is None:
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245 return None
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246
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247 if cls.should_add_vcs_url_prefix(repo_url):
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248 repo_url = '{}+{}'.format(cls.name, repo_url)
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249
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250 revision = cls.get_requirement_revision(repo_dir)
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251 subdir = cls.get_subdirectory(repo_dir)
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252 req = make_vcs_requirement_url(repo_url, revision, project_name,
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253 subdir=subdir)
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254
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255 return req
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256
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257 @staticmethod
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258 def get_base_rev_args(rev):
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259 """
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260 Return the base revision arguments for a vcs command.
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261
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262 Args:
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263 rev: the name of a revision to install. Cannot be None.
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264 """
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265 raise NotImplementedError
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266
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267 @classmethod
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268 def make_rev_options(cls, rev=None, extra_args=None):
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269 # type: (Optional[str], Optional[List[str]]) -> RevOptions
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270 """
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271 Return a RevOptions object.
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272
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273 Args:
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274 rev: the name of a revision to install.
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275 extra_args: a list of extra options.
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276 """
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277 return RevOptions(cls, rev, extra_args=extra_args)
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278
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279 @classmethod
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280 def _is_local_repository(cls, repo):
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281 # type: (str) -> bool
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282 """
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283 posix absolute paths start with os.path.sep,
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284 win32 ones start with drive (like c:\\folder)
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285 """
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286 drive, tail = os.path.splitdrive(repo)
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287 return repo.startswith(os.path.sep) or bool(drive)
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288
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289 def export(self, location, url):
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290 """
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291 Export the repository at the url to the destination location
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292 i.e. only download the files, without vcs informations
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293
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294 :param url: the repository URL starting with a vcs prefix.
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295 """
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296 raise NotImplementedError
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297
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298 @classmethod
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299 def get_netloc_and_auth(cls, netloc, scheme):
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300 """
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301 Parse the repository URL's netloc, and return the new netloc to use
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302 along with auth information.
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303
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304 Args:
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305 netloc: the original repository URL netloc.
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306 scheme: the repository URL's scheme without the vcs prefix.
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307
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308 This is mainly for the Subversion class to override, so that auth
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309 information can be provided via the --username and --password options
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310 instead of through the URL. For other subclasses like Git without
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311 such an option, auth information must stay in the URL.
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312
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313 Returns: (netloc, (username, password)).
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314 """
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315 return netloc, (None, None)
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316
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317 @classmethod
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318 def get_url_rev_and_auth(cls, url):
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319 # type: (str) -> Tuple[str, Optional[str], AuthInfo]
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320 """
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321 Parse the repository URL to use, and return the URL, revision,
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322 and auth info to use.
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323
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324 Returns: (url, rev, (username, password)).
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325 """
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326 scheme, netloc, path, query, frag = urllib_parse.urlsplit(url)
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327 if '+' not in scheme:
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328 raise ValueError(
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329 "Sorry, {!r} is a malformed VCS url. "
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330 "The format is <vcs>+<protocol>://<url>, "
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331 "e.g. svn+http://myrepo/svn/MyApp#egg=MyApp".format(url)
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332 )
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333 # Remove the vcs prefix.
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334 scheme = scheme.split('+', 1)[1]
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335 netloc, user_pass = cls.get_netloc_and_auth(netloc, scheme)
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336 rev = None
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337 if '@' in path:
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338 path, rev = path.rsplit('@', 1)
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339 url = urllib_parse.urlunsplit((scheme, netloc, path, query, ''))
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340 return url, rev, user_pass
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341
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342 @staticmethod
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343 def make_rev_args(username, password):
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344 """
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345 Return the RevOptions "extra arguments" to use in obtain().
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346 """
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347 return []
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348
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349 def get_url_rev_options(self, url):
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350 # type: (str) -> Tuple[str, RevOptions]
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351 """
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352 Return the URL and RevOptions object to use in obtain() and in
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353 some cases export(), as a tuple (url, rev_options).
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354 """
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355 url, rev, user_pass = self.get_url_rev_and_auth(url)
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356 username, password = user_pass
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357 extra_args = self.make_rev_args(username, password)
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358 rev_options = self.make_rev_options(rev, extra_args=extra_args)
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359
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360 return url, rev_options
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361
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362 @staticmethod
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363 def normalize_url(url):
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364 # type: (str) -> str
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365 """
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366 Normalize a URL for comparison by unquoting it and removing any
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367 trailing slash.
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368 """
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369 return urllib_parse.unquote(url).rstrip('/')
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370
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371 @classmethod
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372 def compare_urls(cls, url1, url2):
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373 # type: (str, str) -> bool
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374 """
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375 Compare two repo URLs for identity, ignoring incidental differences.
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376 """
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377 return (cls.normalize_url(url1) == cls.normalize_url(url2))
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378
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379 def fetch_new(self, dest, url, rev_options):
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380 """
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381 Fetch a revision from a repository, in the case that this is the
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382 first fetch from the repository.
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383
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384 Args:
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385 dest: the directory to fetch the repository to.
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386 rev_options: a RevOptions object.
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387 """
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388 raise NotImplementedError
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389
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390 def switch(self, dest, url, rev_options):
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391 """
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parents:
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392 Switch the repo at ``dest`` to point to ``URL``.
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diff changeset
393
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diff changeset
394 Args:
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395 rev_options: a RevOptions object.
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diff changeset
396 """
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parents:
diff changeset
397 raise NotImplementedError
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parents:
diff changeset
398
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diff changeset
399 def update(self, dest, url, rev_options):
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diff changeset
400 """
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parents:
diff changeset
401 Update an already-existing repo to the given ``rev_options``.
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diff changeset
402
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parents:
diff changeset
403 Args:
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guerler
parents:
diff changeset
404 rev_options: a RevOptions object.
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guerler
parents:
diff changeset
405 """
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parents:
diff changeset
406 raise NotImplementedError
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guerler
parents:
diff changeset
407
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guerler
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diff changeset
408 @classmethod
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409 def is_commit_id_equal(cls, dest, name):
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410 """
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411 Return whether the id of the current commit equals the given name.
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412
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413 Args:
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414 dest: the repository directory.
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415 name: a string name.
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416 """
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417 raise NotImplementedError
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guerler
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418
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419 def obtain(self, dest, url):
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420 # type: (str, str) -> None
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421 """
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422 Install or update in editable mode the package represented by this
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423 VersionControl object.
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424
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425 :param dest: the repository directory in which to install or update.
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426 :param url: the repository URL starting with a vcs prefix.
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427 """
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428 url, rev_options = self.get_url_rev_options(url)
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429
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430 if not os.path.exists(dest):
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431 self.fetch_new(dest, url, rev_options)
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432 return
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433
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434 rev_display = rev_options.to_display()
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435 if self.is_repository_directory(dest):
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436 existing_url = self.get_remote_url(dest)
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parents:
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437 if self.compare_urls(existing_url, url):
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438 logger.debug(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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439 '%s in %s exists, and has correct URL (%s)',
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440 self.repo_name.title(),
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441 display_path(dest),
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parents:
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442 url,
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443 )
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444 if not self.is_commit_id_equal(dest, rev_options.rev):
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445 logger.info(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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446 'Updating %s %s%s',
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447 display_path(dest),
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parents:
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448 self.repo_name,
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449 rev_display,
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guerler
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450 )
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451 self.update(dest, url, rev_options)
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452 else:
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453 logger.info('Skipping because already up-to-date.')
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454 return
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455
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456 logger.warning(
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457 '%s %s in %s exists with URL %s',
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458 self.name,
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diff changeset
459 self.repo_name,
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460 display_path(dest),
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461 existing_url,
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462 )
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463 prompt = ('(s)witch, (i)gnore, (w)ipe, (b)ackup ',
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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464 ('s', 'i', 'w', 'b'))
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465 else:
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466 logger.warning(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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467 'Directory %s already exists, and is not a %s %s.',
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guerler
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468 dest,
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guerler
parents:
diff changeset
469 self.name,
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guerler
parents:
diff changeset
470 self.repo_name,
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guerler
parents:
diff changeset
471 )
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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472 # https://github.com/python/mypy/issues/1174
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473 prompt = ('(i)gnore, (w)ipe, (b)ackup ', # type: ignore
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parents:
diff changeset
474 ('i', 'w', 'b'))
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475
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476 logger.warning(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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477 'The plan is to install the %s repository %s',
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diff changeset
478 self.name,
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479 url,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
480 )
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481 response = ask_path_exists('What to do? %s' % prompt[0], prompt[1])
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482
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483 if response == 'a':
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484 sys.exit(-1)
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485
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diff changeset
486 if response == 'w':
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487 logger.warning('Deleting %s', display_path(dest))
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guerler
parents:
diff changeset
488 rmtree(dest)
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diff changeset
489 self.fetch_new(dest, url, rev_options)
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guerler
parents:
diff changeset
490 return
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
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491
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
492 if response == 'b':
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guerler
parents:
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493 dest_dir = backup_dir(dest)
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guerler
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494 logger.warning(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
495 'Backing up %s to %s', display_path(dest), dest_dir,
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guerler
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diff changeset
496 )
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guerler
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497 shutil.move(dest, dest_dir)
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diff changeset
498 self.fetch_new(dest, url, rev_options)
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guerler
parents:
diff changeset
499 return
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
500
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
501 # Do nothing if the response is "i".
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guerler
parents:
diff changeset
502 if response == 's':
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guerler
parents:
diff changeset
503 logger.info(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
504 'Switching %s %s to %s%s',
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guerler
parents:
diff changeset
505 self.repo_name,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
506 display_path(dest),
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
507 url,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
508 rev_display,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
509 )
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guerler
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diff changeset
510 self.switch(dest, url, rev_options)
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guerler
parents:
diff changeset
511
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512 def unpack(self, location, url):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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513 # type: (str, str) -> None
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guerler
parents:
diff changeset
514 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
515 Clean up current location and download the url repository
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
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516 (and vcs infos) into location
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guerler
parents:
diff changeset
517
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
518 :param url: the repository URL starting with a vcs prefix.
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guerler
parents:
diff changeset
519 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
520 if os.path.exists(location):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
521 rmtree(location)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
522 self.obtain(location, url=url)
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guerler
parents:
diff changeset
523
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524 @classmethod
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525 def get_remote_url(cls, location):
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526 """
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527 Return the url used at location
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528
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529 Raises RemoteNotFoundError if the repository does not have a remote
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530 url configured.
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531 """
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532 raise NotImplementedError
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533
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534 @classmethod
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535 def get_revision(cls, location):
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536 """
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537 Return the current commit id of the files at the given location.
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538 """
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539 raise NotImplementedError
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540
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541 @classmethod
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542 def run_command(
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543 cls,
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544 cmd, # type: List[str]
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545 show_stdout=True, # type: bool
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546 cwd=None, # type: Optional[str]
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547 on_returncode='raise', # type: str
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548 extra_ok_returncodes=None, # type: Optional[Iterable[int]]
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549 command_desc=None, # type: Optional[str]
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550 extra_environ=None, # type: Optional[Mapping[str, Any]]
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551 spinner=None # type: Optional[SpinnerInterface]
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552 ):
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553 # type: (...) -> Text
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554 """
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555 Run a VCS subcommand
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556 This is simply a wrapper around call_subprocess that adds the VCS
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557 command name, and checks that the VCS is available
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558 """
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559 cmd = [cls.name] + cmd
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560 try:
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561 return call_subprocess(cmd, show_stdout, cwd,
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562 on_returncode=on_returncode,
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563 extra_ok_returncodes=extra_ok_returncodes,
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564 command_desc=command_desc,
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565 extra_environ=extra_environ,
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566 unset_environ=cls.unset_environ,
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567 spinner=spinner)
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568 except OSError as e:
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569 # errno.ENOENT = no such file or directory
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570 # In other words, the VCS executable isn't available
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571 if e.errno == errno.ENOENT:
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572 raise BadCommand(
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573 'Cannot find command %r - do you have '
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574 '%r installed and in your '
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575 'PATH?' % (cls.name, cls.name))
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576 else:
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577 raise # re-raise exception if a different error occurred
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578
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579 @classmethod
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580 def is_repository_directory(cls, path):
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581 # type: (str) -> bool
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582 """
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583 Return whether a directory path is a repository directory.
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584 """
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585 logger.debug('Checking in %s for %s (%s)...',
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586 path, cls.dirname, cls.name)
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587 return os.path.exists(os.path.join(path, cls.dirname))
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588
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589 @classmethod
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590 def controls_location(cls, location):
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591 # type: (str) -> bool
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592 """
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593 Check if a location is controlled by the vcs.
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594 It is meant to be overridden to implement smarter detection
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595 mechanisms for specific vcs.
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596
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597 This can do more than is_repository_directory() alone. For example,
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598 the Git override checks that Git is actually available.
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599 """
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600 return cls.is_repository_directory(location)