Mercurial > treepkg > treepkg

annotate treepkg/git.py @ 552:e68c07fd849a

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fix: don't call update function anymore user repository method instead
author Bjoern Ricks <bricks@intevation.de>
date Tue, 08 Mar 2011 14:21:55 +0000
parents f841b369aa80
children 9824e409388b
rev   line source
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fd52f1e231ba Fix typo in a comment
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1 # Copyright (C) 2010 by Intevation GmbH
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2 # Authors:
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3 # Andre Heinecke <aheinecke@intevation.de>
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4 #
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5 # This program is free software under the GPL (>=v2)
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6 # Read the file COPYING coming with the software for details.
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7
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8 """Collection of Git utility code"""
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9
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10 import os
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11 import shutil
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12 import re
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13 import StringIO
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14
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15 import run
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16 from cmdexpand import cmdexpand
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17 from util import extract_value_for_key
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18
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19
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20 class GitError(Exception):
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21
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22 """Base class for Git specific errors raised by TreePKG"""
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23
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24 class GitRepository(object):
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25
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26 """Describes a git repository"""
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27
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28 def __init__(self, url, branch=None):
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29 """Initialize the git repository description
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30 Parameters:
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31 url -- The url of the repository
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32
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33 branch -- The name of the remote Branch to track
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34 defaults to master
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35 """
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36 self.url = url
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37 self.branch = branch
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38
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39 def checkout(self, localdir):
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40 """Clones the repository at url into the localdir"""
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41 run.call(cmdexpand("git clone -q $url $localdir", **locals()))
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42 if branch:
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43 run.call(cmdexpand("git checkout -q --track -b local $branch",
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44 branch=self.branch), cwd=localdir)
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45
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46 def export(self, localdir, destdir):
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47 """Exports the working copy in localdir to destdir"""
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48 dest = destdir + os.sep
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49 run.call(cmdexpand("git checkout-index -a -f --prefix=$dest", dest=dest),
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50 cwd=localdir)
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51
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52 def copy(self, localdir, destdir):
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53 """Copies the working copy to destdir (including .git dir)"""
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54 shutils.copytree(localdir, destdir)
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55
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56 def update(self, localdir, branch=None):
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57 """Runs git pull on the localdir."""
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58 run.call(cmdexpand("git pull -q"), cwd=localdir)
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59 if branch:
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60 run.call(cmdexpand("git checkout -q $branch", branch=branch),
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61 cwd=localdir)
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62
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63
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64 def last_changed_revision(self, localdir):
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65 """Returns the SHA1 sum of the latest commit in the working copy in localdir"""
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66 output = run.capture_output(cmdexpand("git rev-parse HEAD"),
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67 cwd=localdir)
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68 if output is None:
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69 raise GitError("Cannot determine last changed revision for %r"
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70 % git_working_copy)
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71 return output.strip()
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72
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73 def check_working_copy(self, localdir):
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74 """FIXME STUB: Not implemented for git"""
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75 return None
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76
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77 class GitWorkingCopy(object):
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78
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79 """Represents a checkout of a git repository"""
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80
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81 def __init__(self, repository, localdir, logger=None):
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82 """
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83 Initialize the working copy.
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84 Parameters:
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85 repository -- The GitRepository instance describing the
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86 repository
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87 localdir -- The directory for the working copy
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88 logger -- logging object to use for some info/debug messages
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89 """
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90 self.repository = repository
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91 self.localdir = localdir
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92 self.logger = logger
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93
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94 def log_info(self, *args):
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95 if self.logger is not None:
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96 self.logger.info(*args)
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97
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98 def update_or_checkout(self, revision=0):
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99 """Updates the working copy or creates by checking out the repository.
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100 Revision number included for compatibility
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101 """
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102 gitdir = os.path.join(self.localdir, ".git")
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103 branch = self.repository.branch
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104 if not branch:
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105 branch = "master"
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106 if os.path.exists(gitdir):
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107 self.log_info("Updating the working copy in %r for repo " \
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108 "%s and branch %s", self.localdir,
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109 self.repository.url,
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110 branch)
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111 self.repository.update(self.localdir, self.repository.branch)
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112 else:
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113 # TODO: better check if localdir contains files
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114 if os.path.exists(self.localdir):
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115 raise GitError("Working copy dir %s already exists. " \
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116 " files. Can't checkout from %s" % (self.localdir,
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117 self.repository.url))
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118 self.log_info("The working copy in %r doesn't exist yet."
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119 " Checking out branch %s from %r",
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120 self.localdir, branch, self.repository.url)
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121 self.repository.checkout(self.localdir)
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122
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123 def export(self, destdir):
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124 """Exports the working copy to destdir"""
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125 self.repository.export(self.localdir, destdir)
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126
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127 def export_tag(self, url, destdir, revision=None):
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128 """Export tag to destir """
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129 self.export(destdir)
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130
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131 def last_changed_revision(self):
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132 """Returns the last changed rev of the working copy"""
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133 return self.get_revision()
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134
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135 def list_tags(self, pattern):
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136 output = run.capture_output(cmdexpand("git tag -l $pattern",
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137 pattern=pattern), cwd=self.localdir)
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138 return output.splitlines()
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139
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140 def get_revision(self, refname="HEAD"):
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141 """Return the SHA1 sum of the latest commit"""
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142 output = run.capture_output(cmdexpand("git rev-parse $refname",
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143 refname=refname), cwd=self.localdir)
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144 if output is None:
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145 raise GitError("Cannot determine revision for %r"
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146 % self.localdir)
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147 return output.strip()
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148
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149 def get_short_revision(self, refname="HEAD"):
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150 """Return the short SHA1 sum of the latest commit"""
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151 revision = self.get_revision(refname)
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152 return revision[:7]
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153
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154 class TagDetector:
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155
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156 """Class to detect tags from a git repository
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157
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158 The tags are found using the parameters:
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159 url -- The url of the git repository to use
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160 pattern -- A regular expression matching the tags
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161 """
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162
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163 def __init__(self, url, pattern, localdir):
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164 self.url = url
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165 self.pattern = pattern
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166 repo = GitRepository(url)
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167 self.workingcopy = GitWorkingCopy(repo, localdir)
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168
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169 def list_tags(self):
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170 self.workingcopy.update_or_checkout()
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171 tags = self.workingcopy.list_tags(self.pattern)
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172 return sorted(tags)
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173
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174 def newest_tag_revision(self):
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175 candidates = self.list_tags()
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176 urlrev = (None, None)
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177 if candidates:
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178 newest = candidates[-1]
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179 try:
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180 rev = self.workingcopy.get_revision(newest)
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181 urlrev = (newest, rev)
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182 except GitError:
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183 pass
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184 return urlrev
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185
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186 def tag_pkg_parameters(self, tag_name):
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187 # FIXME: Don't hardcore regex
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188 #match = re.search(r"enterprise[^.]*\.[^.]*\."
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189 match = re.search(r"enterprise[^.]*\.[^.]*"
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190 r"(?P<date>[0-9]{8})",
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191 tag_name)
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192 if match:
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193 date = match.group("date")
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194 return (date, 1)
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195 else:
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196 raise GitError("Cannot determine tag parameters from %s"
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197 % tag_name)
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