Mercurial > repos > bcclaywell > argo_navis

annotate venv/lib/python2.7/site-packages/pip/vcs/git.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 from __future__ import absolute_import
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2
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3 import logging
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4 import tempfile
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5 import os.path
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6
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7 from pip._vendor.six.moves.urllib import parse as urllib_parse
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8 from pip._vendor.six.moves.urllib import request as urllib_request
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9
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10 from pip.utils import display_path, rmtree
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11 from pip.vcs import vcs, VersionControl
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12
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13
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14 urlsplit = urllib_parse.urlsplit
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15 urlunsplit = urllib_parse.urlunsplit
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16
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17
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18 logger = logging.getLogger(__name__)
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19
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20
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21 class Git(VersionControl):
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22 name = 'git'
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23 dirname = '.git'
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24 repo_name = 'clone'
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25 schemes = (
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26 'git', 'git+http', 'git+https', 'git+ssh', 'git+git', 'git+file',
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27 )
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28
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29 def __init__(self, url=None, *args, **kwargs):
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30
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31 # Works around an apparent Git bug
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32 # (see http://article.gmane.org/gmane.comp.version-control.git/146500)
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33 if url:
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34 scheme, netloc, path, query, fragment = urlsplit(url)
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35 if scheme.endswith('file'):
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36 initial_slashes = path[:-len(path.lstrip('/'))]
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37 newpath = (
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38 initial_slashes +
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39 urllib_request.url2pathname(path)
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40 .replace('\\', '/').lstrip('/')
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41 )
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42 url = urlunsplit((scheme, netloc, newpath, query, fragment))
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43 after_plus = scheme.find('+') + 1
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44 url = scheme[:after_plus] + urlunsplit(
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45 (scheme[after_plus:], netloc, newpath, query, fragment),
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46 )
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47
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48 super(Git, self).__init__(url, *args, **kwargs)
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49
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50 def export(self, location):
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51 """Export the Git repository at the url to the destination location"""
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52 temp_dir = tempfile.mkdtemp('-export', 'pip-')
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53 self.unpack(temp_dir)
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54 try:
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55 if not location.endswith('/'):
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56 location = location + '/'
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57 self.run_command(
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58 ['checkout-index', '-a', '-f', '--prefix', location],
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59 filter_stdout=self._filter, show_stdout=False, cwd=temp_dir)
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60 finally:
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61 rmtree(temp_dir)
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62
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63 def check_rev_options(self, rev, dest, rev_options):
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64 """Check the revision options before checkout to compensate that tags
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65 and branches may need origin/ as a prefix.
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66 Returns the SHA1 of the branch or tag if found.
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67 """
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68 revisions = self.get_refs(dest)
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69
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70 origin_rev = 'origin/%s' % rev
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71 if origin_rev in revisions:
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72 # remote branch
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73 return [revisions[origin_rev]]
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74 elif rev in revisions:
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75 # a local tag or branch name
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76 return [revisions[rev]]
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77 else:
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78 logger.warning(
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79 "Could not find a tag or branch '%s', assuming commit.", rev,
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80 )
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81 return rev_options
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82
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83 def switch(self, dest, url, rev_options):
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84 self.run_command(['config', 'remote.origin.url', url], cwd=dest)
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85 self.run_command(['checkout', '-q'] + rev_options, cwd=dest)
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86
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87 self.update_submodules(dest)
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88
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89 def update(self, dest, rev_options):
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90 # First fetch changes from the default remote
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91 self.run_command(['fetch', '-q'], cwd=dest)
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92 # Then reset to wanted revision (maby even origin/master)
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93 if rev_options:
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94 rev_options = self.check_rev_options(
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95 rev_options[0], dest, rev_options,
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96 )
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97 self.run_command(['reset', '--hard', '-q'] + rev_options, cwd=dest)
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98 #: update submodules
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99 self.update_submodules(dest)
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100
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101 def obtain(self, dest):
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102 url, rev = self.get_url_rev()
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103 if rev:
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104 rev_options = [rev]
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105 rev_display = ' (to %s)' % rev
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106 else:
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107 rev_options = ['origin/master']
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108 rev_display = ''
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109 if self.check_destination(dest, url, rev_options, rev_display):
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110 logger.info(
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111 'Cloning %s%s to %s', url, rev_display, display_path(dest),
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112 )
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113 self.run_command(['clone', '-q', url, dest])
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114
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115 if rev:
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116 rev_options = self.check_rev_options(rev, dest, rev_options)
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117 # Only do a checkout if rev_options differs from HEAD
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118 if not self.get_revision(dest).startswith(rev_options[0]):
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119 self.run_command(
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120 ['checkout', '-q'] + rev_options,
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121 cwd=dest,
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122 )
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123 #: repo may contain submodules
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124 self.update_submodules(dest)
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125
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126 def get_url(self, location):
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127 url = self.run_command(
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128 ['config', 'remote.origin.url'],
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129 show_stdout=False, cwd=location)
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130 return url.strip()
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131
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132 def get_revision(self, location):
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133 current_rev = self.run_command(
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134 ['rev-parse', 'HEAD'], show_stdout=False, cwd=location)
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135 return current_rev.strip()
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136
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137 def get_refs(self, location):
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138 """Return map of named refs (branches or tags) to commit hashes."""
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139 output = self.run_command(['show-ref'],
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140 show_stdout=False, cwd=location)
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141 rv = {}
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142 for line in output.strip().splitlines():
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143 commit, ref = line.split(' ', 1)
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144 ref = ref.strip()
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145 ref_name = None
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146 if ref.startswith('refs/remotes/'):
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147 ref_name = ref[len('refs/remotes/'):]
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148 elif ref.startswith('refs/heads/'):
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149 ref_name = ref[len('refs/heads/'):]
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150 elif ref.startswith('refs/tags/'):
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151 ref_name = ref[len('refs/tags/'):]
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152 if ref_name is not None:
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153 rv[ref_name] = commit.strip()
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154 return rv
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155
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156 def get_src_requirement(self, dist, location, find_tags):
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157 repo = self.get_url(location)
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158 if not repo.lower().startswith('git:'):
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159 repo = 'git+' + repo
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160 egg_project_name = dist.egg_name().split('-', 1)[0]
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161 if not repo:
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162 return None
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163 current_rev = self.get_revision(location)
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164 refs = self.get_refs(location)
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165 # refs maps names to commit hashes; we need the inverse
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166 # if multiple names map to a single commit, we pick the first one
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167 # alphabetically
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168 names_by_commit = {}
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169 for ref, commit in sorted(refs.items()):
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170 if commit not in names_by_commit:
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171 names_by_commit[commit] = ref
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172
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173 if current_rev in names_by_commit:
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174 # It's a tag or branch.
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175 name = names_by_commit[current_rev]
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176 full_egg_name = (
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177 '%s-%s' % (egg_project_name, self.translate_egg_surname(name))
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178 )
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179 else:
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180 full_egg_name = '%s-dev' % egg_project_name
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181
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182 return '%s@%s#egg=%s' % (repo, current_rev, full_egg_name)
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183
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184 def get_url_rev(self):
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185 """
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186 Prefixes stub URLs like 'user@hostname:user/repo.git' with 'ssh://'.
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187 That's required because although they use SSH they sometimes doesn't
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188 work with a ssh:// scheme (e.g. Github). But we need a scheme for
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189 parsing. Hence we remove it again afterwards and return it as a stub.
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190 """
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191 if '://' not in self.url:
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192 assert 'file:' not in self.url
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193 self.url = self.url.replace('git+', 'git+ssh://')
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194 url, rev = super(Git, self).get_url_rev()
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195 url = url.replace('ssh://', '')
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196 else:
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197 url, rev = super(Git, self).get_url_rev()
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198
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199 return url, rev
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200
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201 def update_submodules(self, location):
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202 if not os.path.exists(os.path.join(location, '.gitmodules')):
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203 return
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204 self.run_command(
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205 ['submodule', 'update', '--init', '--recursive', '-q'],
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206 cwd=location,
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207 )
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208
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209 vcs.register(Git)