Mercurial > treepkg > treepkg

annotate treepkg/git.py @ 568:bf8114a76224

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add more debug output
author Bjoern Ricks <bricks@intevation.de>
date Fri, 02 Sep 2011 11:19:03 +0000
parents e188e780977b
children aaeca9cf0143
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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19a3051caebd import capture_output
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16
19a3051caebd import capture_output
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17 from run import capture_output
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18 from cmdexpand import cmdexpand
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19 from util import extract_value_for_key
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20
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21
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22 class GitError(Exception):
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23
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24 """Base class for Git specific errors raised by TreePKG"""
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25
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26 class GitRepository(object):
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27
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28 """Describes a git repository"""
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29
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30 def __init__(self, url, branch=None, logger=None):
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31 """Initialize the git repository description
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32 Parameters:
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33 url -- The url of the repository
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34
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35 branch -- The name of the remote Branch to track
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36 defaults to master
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37 """
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38 self.url = url
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39 self.log = logger
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40 if not branch:
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41 # as default track master as local-master
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42 self.local_branch = "local-master"
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43 self.branch = "master"
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44 else:
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45 self.local_branch = branch
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46 self.branch = branch
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47 if ":" in self.branch:
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48 branches = self.branch.split(":")
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49 self.local_branch = branches[0]
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50 self.branch = branches[1]
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51
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52 def checkout(self, localdir):
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53 """Clones the repository at url into the localdir"""
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54 run.call(cmdexpand("git clone -q $url $localdir", **locals()))
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55 if self.branch:
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56 self.checkout_branch(localdir)
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57
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58 def checkout_branch(self, localdir):
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59 self.log_info("Switching to local branch '%s' for branch '%s'" %\
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60 (self.local_branch, self.branch))
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61 run.call(cmdexpand("git checkout -q --track -b $local $branch",
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62 branch=self.branch, local=self.local_branch), cwd=localdir)
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63
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64
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65 def export(self, localdir, destdir):
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66 """Exports the working copy in localdir to destdir"""
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67 dest = destdir + os.sep
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68 run.call(cmdexpand("git checkout-index -a -f --prefix=$dest", dest=dest),
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69 cwd=localdir)
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70
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71 def copy(self, localdir, destdir):
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72 """Copies the working copy to destdir (including .git dir)"""
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73 shutils.copytree(localdir, destdir)
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74
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75 def update(self, localdir):
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76 """Runs git pull on the localdir."""
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77 run.call(cmdexpand("git pull -q"), cwd=localdir)
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78 output = capture_output(cmdexpand("git branch"), cwd=localdir)
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79 branches = output.splitlines()
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80 cur_branch = None
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81 all_branches = []
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82 for tbranch in branches:
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83 tbranch = tbranch.strip()
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84 if tbranch.startswith("*"):
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85 cur_branch = tbranch[2:]
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86 tbranch = cur_branch
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87 all_branches.append(tbranch)
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88 if not self.local_branch in all_branches:
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89 self.checkout_branch(localdir)
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90 self.log_info("Current branch is '%s'" % cur_branch)
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91 # TODO: check if self.local_branch is curbranch
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92 # doesn't hurt if a checkout is done on the current branch
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93 if self.branch:
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94 self.log_info("Switching to local branch '%s'" % self.local_branch)
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95 run.call(cmdexpand("git checkout -q $branch", branch=self.local_branch),
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96 cwd=localdir)
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97
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98 def log_info(self, *args):
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99 if self.logger is not None:
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100 self.logger.info(*args)
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101
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102 def last_changed_revision(self, localdir):
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103 """Returns the SHA1 sum of the latest commit in the working copy in localdir"""
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104 output = run.capture_output(cmdexpand("git rev-parse HEAD"),
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105 cwd=localdir)
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106 if output is None:
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107 raise GitError("Cannot determine last changed revision for %r"
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108 % git_working_copy)
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109 return output.strip()
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110
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111 def check_working_copy(self, localdir):
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112 """FIXME STUB: Not implemented for git"""
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113 return None
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114
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115 class GitWorkingCopy(object):
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116
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117 """Represents a checkout of a git repository"""
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118
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119 def __init__(self, repository, localdir, logger=None):
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120 """
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121 Initialize the working copy.
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122 Parameters:
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123 repository -- The GitRepository instance describing the
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124 repository
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125 localdir -- The directory for the working copy
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126 logger -- logging object to use for some info/debug messages
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127 """
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128 self.repository = repository
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129 self.localdir = localdir
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130 self.logger = logger
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131
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132 def log_info(self, *args):
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133 if self.logger is not None:
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134 self.logger.info(*args)
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135
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136 def update_or_checkout(self, revision=0):
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137 """Updates the working copy or creates by checking out the repository.
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138 Revision number included for compatibility
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139 """
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140 gitdir = os.path.join(self.localdir, ".git")
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141 branch = self.repository.branch
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142 if os.path.exists(gitdir):
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143 self.log_info("Updating the working copy in %r for repo " \
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144 "%s and branch %s", self.localdir,
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145 self.repository.url,
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146 branch)
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147 self.repository.update(self.localdir)
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148 else:
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149 # TODO: better check if localdir contains files
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150 if os.path.exists(self.localdir):
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151 raise GitError("Working copy dir %s already exists. " \
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152 " files. Can't checkout from %s" % (self.localdir,
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153 self.repository.url))
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154 self.log_info("The working copy in %r doesn't exist yet."
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155 " Checking out branch %s from %r",
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156 self.localdir, branch, self.repository.url)
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157 self.repository.checkout(self.localdir)
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158
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159 def export(self, destdir):
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160 """Exports the working copy to destdir"""
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161 self.repository.export(self.localdir, destdir)
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162
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163 def export_tag(self, url, destdir, revision=None):
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164 """Export tag to destir """
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165 self.export(destdir)
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166
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167 def last_changed_revision(self):
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168 """Returns the last changed rev of the working copy"""
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169 return self.get_revision()
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170
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171 def list_tags(self, pattern):
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172 output = run.capture_output(cmdexpand("git tag -l $pattern",
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173 pattern=pattern), cwd=self.localdir)
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174 return output.splitlines()
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175
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176 def get_revision(self, refname="HEAD"):
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177 """Return the SHA1 sum of the latest commit"""
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178 output = run.capture_output(cmdexpand("git rev-parse $refname",
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179 refname=refname), cwd=self.localdir)
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180 if output is None:
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181 raise GitError("Cannot determine revision for %r"
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182 % self.localdir)
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183 return output.strip()
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184
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185 def get_short_revision(self, refname="HEAD"):
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186 """Return the short SHA1 sum of the latest commit"""
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187 revision = self.get_revision(refname)
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188 return revision[:7]
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189
508
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190 class TagDetector:
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191
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192 """Class to detect tags from a git repository
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193
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194 The tags are found using the parameters:
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195 url -- The url of the git repository to use
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196 pattern -- A regular expression matching the tags
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197 """
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198
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199 def __init__(self, url, pattern, localdir):
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200 self.url = url
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201 self.pattern = pattern
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202 repo = GitRepository(url)
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203 self.workingcopy = GitWorkingCopy(repo, localdir)
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204
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205 def list_tags(self):
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206 self.workingcopy.update_or_checkout()
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207 tags = self.workingcopy.list_tags(self.pattern)
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208 return sorted(tags)
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209
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210 def newest_tag_revision(self):
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211 candidates = self.list_tags()
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212 urlrev = (None, None)
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213 if candidates:
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214 newest = candidates[-1]
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215 try:
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216 rev = self.workingcopy.get_revision(newest)
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217 urlrev = (newest, rev)
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218 except GitError:
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219 pass
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220 return urlrev
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221
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222 def tag_pkg_parameters(self, tag_name):
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223 # FIXME: Don't hardcore regex
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224 #match = re.search(r"enterprise[^.]*\.[^.]*\."
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225 match = re.search(r"enterprise[^.]*\.[^.]*"
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226 r"(?P<date>[0-9]{8})",
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227 tag_name)
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228 if match:
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229 date = match.group("date")
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230 return (date, 1)
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231 else:
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232 raise GitError("Cannot determine tag parameters from %s"
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233 % tag_name)
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