Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/hg.py @ 2740:386f04d6ecb3

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clean up hg.py: move repo constructor code into each repo module
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Mon, 31 Jul 2006 07:11:12 -0700
parents 400a4a502001
children b1b1aa6f275c
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1 # hg.py - repository classes for mercurial
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2 #
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3 # Copyright 2005 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms
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6 # of the GNU General Public License, incorporated herein by reference.
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7
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8 from node import *
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9 from repo import *
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10 from demandload import *
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11 from i18n import gettext as _
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12 demandload(globals(), "localrepo bundlerepo httprepo sshrepo statichttprepo")
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13 demandload(globals(), "errno lock os shutil util")
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14
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15 def _local(path):
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16 return os.path.isfile(util.drop_scheme('file', path)) and bundlerepo or localrepo
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17
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18 schemes = {
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19 'bundle': bundlerepo,
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20 'file': _local,
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21 'hg': httprepo,
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22 'http': httprepo,
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23 'https': httprepo,
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24 'old-http': statichttprepo,
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25 'ssh': sshrepo,
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26 'static-http': statichttprepo,
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27 }
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28
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29 def _lookup(path):
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30 scheme = 'file'
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31 if path:
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32 c = path.find(':')
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33 if c > 0:
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34 scheme = path[:c]
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35 thing = schemes.get(scheme) or schemes['file']
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36 try:
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37 return thing(path)
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38 except TypeError:
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39 return thing
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40
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41 def islocal(repo):
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42 '''return true if repo or path is local'''
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43 if isinstance(repo, str):
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44 try:
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45 return _lookup(repo).islocal(repo)
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46 except AttributeError:
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47 return False
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48 return repo.local()
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49
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50 def repository(ui, path=None, create=False):
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51 return _lookup(path).instance(ui, path, create)
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52
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53 def defaultdest(source):
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54 '''return default destination of clone if none is given'''
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55 return os.path.basename(os.path.normpath(source))
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56
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57 def clone(ui, source, dest=None, pull=False, rev=None, update=True,
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58 stream=False):
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59 """Make a copy of an existing repository.
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60
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61 Create a copy of an existing repository in a new directory. The
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62 source and destination are URLs, as passed to the repository
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63 function. Returns a pair of repository objects, the source and
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64 newly created destination.
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65
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66 The location of the source is added to the new repository's
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67 .hg/hgrc file, as the default to be used for future pulls and
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68 pushes.
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69
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70 If an exception is raised, the partly cloned/updated destination
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71 repository will be deleted.
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72
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73 Arguments:
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74
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75 source: repository object or URL
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76
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77 dest: URL of destination repository to create (defaults to base
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78 name of source repository)
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79
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80 pull: always pull from source repository, even in local case
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81
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82 stream: stream raw data uncompressed from repository (fast over
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83 LAN, slow over WAN)
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84
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85 rev: revision to clone up to (implies pull=True)
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86
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87 update: update working directory after clone completes, if
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88 destination is local repository
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89 """
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90 if isinstance(source, str):
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91 src_repo = repository(ui, source)
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92 else:
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93 src_repo = source
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94 source = src_repo.url()
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95
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96 if dest is None:
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97 dest = defaultdest(source)
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98
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99 def localpath(path):
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100 if path.startswith('file://'):
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101 return path[7:]
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102 if path.startswith('file:'):
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103 return path[5:]
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104 return path
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105
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106 dest = localpath(dest)
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107 source = localpath(source)
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108
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109 if os.path.exists(dest):
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110 raise util.Abort(_("destination '%s' already exists"), dest)
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111
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112 class DirCleanup(object):
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113 def __init__(self, dir_):
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114 self.rmtree = shutil.rmtree
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115 self.dir_ = dir_
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116 def close(self):
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117 self.dir_ = None
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118 def __del__(self):
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119 if self.dir_:
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120 self.rmtree(self.dir_, True)
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121
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122 dest_repo = None
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123 try:
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124 dest_repo = repository(ui, dest)
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125 raise util.Abort(_("destination '%s' already exists." % dest))
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126 except RepoError:
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127 dest_repo = repository(ui, dest, create=True)
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128
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129 dest_path = None
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130 dir_cleanup = None
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131 if dest_repo.local():
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132 dest_path = os.path.realpath(dest_repo.root)
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133 dir_cleanup = DirCleanup(dest_path)
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134
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135 abspath = source
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136 copy = False
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137 if src_repo.local() and dest_repo.local():
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138 abspath = os.path.abspath(source)
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139 copy = not pull and not rev
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140
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141 src_lock, dest_lock = None, None
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142 if copy:
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143 try:
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144 # we use a lock here because if we race with commit, we
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145 # can end up with extra data in the cloned revlogs that's
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146 # not pointed to by changesets, thus causing verify to
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147 # fail
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148 src_lock = src_repo.lock()
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149 except lock.LockException:
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150 copy = False
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151
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152 if copy:
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153 # we lock here to avoid premature writing to the target
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154 dest_lock = lock.lock(os.path.join(dest_path, ".hg", "lock"))
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155
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156 # we need to remove the (empty) data dir in dest so copyfiles
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157 # can do its work
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158 os.rmdir(os.path.join(dest_path, ".hg", "data"))
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159 files = "data 00manifest.d 00manifest.i 00changelog.d 00changelog.i"
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160 for f in files.split():
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161 src = os.path.join(source, ".hg", f)
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162 dst = os.path.join(dest_path, ".hg", f)
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163 try:
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164 util.copyfiles(src, dst)
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165 except OSError, inst:
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166 if inst.errno != errno.ENOENT:
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167 raise
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168
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169 # we need to re-init the repo after manually copying the data
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170 # into it
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171 dest_repo = repository(ui, dest)
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172
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173 else:
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174 revs = None
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175 if rev:
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176 if not src_repo.local():
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177 raise util.Abort(_("clone by revision not supported yet "
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178 "for remote repositories"))
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179 revs = [src_repo.lookup(r) for r in rev]
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180
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181 if dest_repo.local():
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182 dest_repo.clone(src_repo, heads=revs, stream=stream)
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183 elif src_repo.local():
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184 src_repo.push(dest_repo, revs=revs)
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185 else:
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186 raise util.Abort(_("clone from remote to remote not supported"))
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187
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188 if src_lock:
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189 src_lock.release()
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190
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191 if dest_repo.local():
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192 fp = dest_repo.opener("hgrc", "w", text=True)
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193 fp.write("[paths]\n")
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194 fp.write("default = %s\n" % abspath)
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195 fp.close()
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196
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197 if dest_lock:
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198 dest_lock.release()
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199
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200 if update:
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201 dest_repo.update(dest_repo.changelog.tip())
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202 if dir_cleanup:
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203 dir_cleanup.close()
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204
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205 return src_repo, dest_repo