Mercurial > treepkg > treepkg

annotate treepkg/git.py @ 321:092925ff75d7

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Added basic Git support, configuration options: git_url git_branch
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 12 Mar 2010 09:13:33 +0000
parents
children ef983263b875
rev   line source
321
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1 # Copyright (C) 2010 by Intevation GmbHi
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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 def checkout(url, localdir, branch=None):
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25 """Clones the repository at url into the localdir"""
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26 run.call(cmdexpand("git clone $url $localdir", **locals()))
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27 if branch:
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28 run.call(cmdexpand("/bin/bash -c \"cd $localdir && git checkout --track -b local $branch\"",
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29 **locals()))
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30 else:
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31 run.call(cmdexpand("/bin/bash -c \"cd $localdir && git checkout --track -b local master\"",
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32 **locals()))
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33
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34 def update(localdir, revision=None):
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35 """Runs git pull on the localdir."""
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36 run.call(cmdexpand("/bin/bash -c \"cd $localdir && git pull -q\"", **locals()))
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37
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38 def export(src, dest):
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39 """Exports the local branch from src to dest"""
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40 run.call(cmdexpand("/bin/bash -c \"cd $src && git checkout-index -a -f --prefix=$dest\"", **locals()))
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41
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42 def last_changed_revision(git_working_copy):
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43 """return the last changed revision of a Git branch as a incrementing Number"""
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44 output = run.capture_output(cmdexpand("/bin/bash -c \"cd $git_working_copy && git rev-list local | nl | tail -n 1 | awk \'{print $$1}\'\"", **locals()))
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45 if output is None:
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46 raise GitError("Cannot determine last changed revision for %r"
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47 % git_working_copy)
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48 return int(output)
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49
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50 class GitRepository(object):
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51
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52 """Describes a git repository"""
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53
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54 def __init__(self, url, branch=None):
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55 """Initialize the git repository description
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56 Parameters:
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57 url -- The url of the repository
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58
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59 branch -- The name of the remote Branch to track
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60 defaults to master
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61 """
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62 self.url = url
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63 self.branch = branch
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64
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65 def checkout(self, localdir):
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66 """Checks out the repository into localdir."""
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67 checkout(self.url , localdir, self.branch)
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68 update(localdir)
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69
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70 def export(self, localdir, destdir):
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71 """Exports the working copy in localdir to destdir"""
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72 export(localdir, destdir)
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73
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74 def last_changed_revision(self, localdir):
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75 """Returns the last changed revision of the working copy in localdir"""
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76 return last_changed_revision(localdir)
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77
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78 def check_working_copy(self, localdir):
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79 """
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80 FIXME STUB: Not implemented for git
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81 """
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82 return None
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83
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84 class GitWorkingCopy(object):
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85
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86 """Represents a checkout of a git repository"""
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87
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88 def __init__(self, repository, localdir, logger=None):
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89 """
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90 Initialize the working copy.
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91 Parameters:
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92 repository -- The GitRepository instance describing the
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93 repository
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94 localdir -- The directory for the working copy
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95 logger -- logging object to use for some info/debug messages
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96 """
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97 self.repository = repository
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98 self.localdir = localdir
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99 self.logger = logger
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100
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101 def log_info(self, *args):
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102 if self.logger is not None:
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103 self.logger.info(*args)
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104
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105 def update_or_checkout(self, revision=0):
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106 """Updates the working copy or creates by checking out the repository.
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107 Revision number included for compatibility
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108 """
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109 if os.path.exists(self.localdir):
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110 self.log_info("Updating the working copy in %r", self.localdir)
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111 update(self.localdir, self.repository.branch)
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112 else:
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113 self.log_info("The working copy in %r doesn't exist yet."
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114 " Checking out from %r",
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115 self.localdir, self.repository.url)
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116 self.repository.checkout(self.localdir)
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117
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118 def export(self, destdir):
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119 """Exports the working copy to destdir"""
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120 self.repository.export(self.localdir, destdir)
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121
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122 def last_changed_revision(self):
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123 """Returns the last changed rev of the working copy"""
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124 return self.repository.last_changed_revision(self.localdir)
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