Mercurial > hg > gitweb

annotate mercurial/hg.py @ 3078:baa3873eb387

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don't let lazyparser read more data than it can handle This should fix issue368.
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
date Sun, 10 Sep 2006 19:15:08 -0300
parents bc3fe3b5b785
children 705e30c0a230
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1 # hg.py - repository classes for mercurial
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2 #
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3 # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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4 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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5 #
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6 # This software may be used and distributed according to the terms
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7 # of the GNU General Public License, incorporated herein by reference.
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8
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9 from node import *
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10 from repo import *
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11 from demandload import *
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12 from i18n import gettext as _
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13 demandload(globals(), "localrepo bundlerepo httprepo sshrepo statichttprepo")
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14 demandload(globals(), "errno lock os shutil util merge@_merge verify@_verify")
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15
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16 def _local(path):
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17 return (os.path.isfile(path and util.drop_scheme('file', path)) and
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18 bundlerepo or localrepo)
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19
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20 schemes = {
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21 'bundle': bundlerepo,
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22 'file': _local,
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23 'hg': httprepo,
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24 'http': httprepo,
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25 'https': httprepo,
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26 'old-http': statichttprepo,
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27 'ssh': sshrepo,
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28 'static-http': statichttprepo,
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29 }
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30
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31 def _lookup(path):
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32 scheme = 'file'
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33 if path:
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34 c = path.find(':')
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35 if c > 0:
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36 scheme = path[:c]
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37 thing = schemes.get(scheme) or schemes['file']
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38 try:
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39 return thing(path)
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40 except TypeError:
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41 return thing
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42
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43 def islocal(repo):
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44 '''return true if repo or path is local'''
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45 if isinstance(repo, str):
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46 try:
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47 return _lookup(repo).islocal(repo)
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48 except AttributeError:
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49 return False
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50 return repo.local()
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51
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52 repo_setup_hooks = []
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53
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54 def repository(ui, path=None, create=False):
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55 """return a repository object for the specified path"""
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56 repo = _lookup(path).instance(ui, path, create)
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57 for hook in repo_setup_hooks:
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58 hook(ui, repo)
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59 return repo
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60
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61 def defaultdest(source):
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62 '''return default destination of clone if none is given'''
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63 return os.path.basename(os.path.normpath(source))
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64
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65 def clone(ui, source, dest=None, pull=False, rev=None, update=True,
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66 stream=False):
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67 """Make a copy of an existing repository.
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68
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69 Create a copy of an existing repository in a new directory. The
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70 source and destination are URLs, as passed to the repository
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71 function. Returns a pair of repository objects, the source and
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72 newly created destination.
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73
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74 The location of the source is added to the new repository's
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75 .hg/hgrc file, as the default to be used for future pulls and
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76 pushes.
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77
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78 If an exception is raised, the partly cloned/updated destination
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79 repository will be deleted.
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80
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81 Arguments:
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82
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83 source: repository object or URL
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84
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85 dest: URL of destination repository to create (defaults to base
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86 name of source repository)
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87
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88 pull: always pull from source repository, even in local case
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89
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90 stream: stream raw data uncompressed from repository (fast over
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91 LAN, slow over WAN)
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92
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93 rev: revision to clone up to (implies pull=True)
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94
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95 update: update working directory after clone completes, if
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96 destination is local repository
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97 """
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98 if isinstance(source, str):
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99 src_repo = repository(ui, source)
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100 else:
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101 src_repo = source
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102 source = src_repo.url()
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103
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104 if dest is None:
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105 dest = defaultdest(source)
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106
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107 def localpath(path):
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108 if path.startswith('file://'):
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109 return path[7:]
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110 if path.startswith('file:'):
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111 return path[5:]
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112 return path
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113
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114 dest = localpath(dest)
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115 source = localpath(source)
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116
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117 if os.path.exists(dest):
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118 raise util.Abort(_("destination '%s' already exists") % dest)
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119
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120 class DirCleanup(object):
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121 def __init__(self, dir_):
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122 self.rmtree = shutil.rmtree
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123 self.dir_ = dir_
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124 def close(self):
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125 self.dir_ = None
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126 def __del__(self):
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127 if self.dir_:
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128 self.rmtree(self.dir_, True)
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129
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130 dest_repo = repository(ui, dest, create=True)
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131
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132 dest_path = None
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133 dir_cleanup = None
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134 if dest_repo.local():
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135 dest_path = os.path.realpath(dest_repo.root)
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136 dir_cleanup = DirCleanup(dest_path)
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137
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138 abspath = source
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139 copy = False
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140 if src_repo.local() and dest_repo.local():
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141 abspath = os.path.abspath(source)
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142 copy = not pull and not rev
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143
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144 src_lock, dest_lock = None, None
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145 if copy:
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146 try:
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147 # we use a lock here because if we race with commit, we
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148 # can end up with extra data in the cloned revlogs that's
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149 # not pointed to by changesets, thus causing verify to
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150 # fail
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151 src_lock = src_repo.lock()
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152 except lock.LockException:
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153 copy = False
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154
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155 if copy:
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156 # we lock here to avoid premature writing to the target
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157 dest_lock = lock.lock(os.path.join(dest_path, ".hg", "lock"))
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158
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159 # we need to remove the (empty) data dir in dest so copyfiles
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160 # can do its work
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161 os.rmdir(os.path.join(dest_path, ".hg", "data"))
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162 files = "data 00manifest.d 00manifest.i 00changelog.d 00changelog.i"
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163 for f in files.split():
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164 src = os.path.join(source, ".hg", f)
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165 dst = os.path.join(dest_path, ".hg", f)
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166 try:
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167 util.copyfiles(src, dst)
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168 except OSError, inst:
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169 if inst.errno != errno.ENOENT:
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170 raise
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171
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172 # we need to re-init the repo after manually copying the data
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173 # into it
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174 dest_repo = repository(ui, dest)
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175
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176 else:
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177 revs = None
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178 if rev:
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179 if not src_repo.local():
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180 raise util.Abort(_("clone by revision not supported yet "
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181 "for remote repositories"))
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182 revs = [src_repo.lookup(r) for r in rev]
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183
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184 if dest_repo.local():
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185 dest_repo.clone(src_repo, heads=revs, stream=stream)
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186 elif src_repo.local():
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187 src_repo.push(dest_repo, revs=revs)
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188 else:
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189 raise util.Abort(_("clone from remote to remote not supported"))
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190
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191 if src_lock:
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192 src_lock.release()
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193
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194 if dest_repo.local():
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195 fp = dest_repo.opener("hgrc", "w", text=True)
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196 fp.write("[paths]\n")
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197 fp.write("default = %s\n" % abspath)
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198 fp.close()
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199
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200 if dest_lock:
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201 dest_lock.release()
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202
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203 if update:
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204 _merge.update(dest_repo, dest_repo.changelog.tip())
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205 if dir_cleanup:
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206 dir_cleanup.close()
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207
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208 return src_repo, dest_repo
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209
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210 def update(repo, node):
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211 """update the working directory to node, merging linear changes"""
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212 return _merge.update(repo, node)
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213
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214 def clean(repo, node, wlock=None, show_stats=True):
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215 """forcibly switch the working directory to node, clobbering changes"""
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216 return _merge.update(repo, node, force=True, wlock=wlock,
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217 show_stats=show_stats)
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218
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219 def merge(repo, node, force=None, remind=True, wlock=None):
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220 """branch merge with node, resolving changes"""
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221 return _merge.update(repo, node, branchmerge=True, force=force,
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222 remind=remind, wlock=wlock)
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223
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224 def revert(repo, node, choose, wlock):
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225 """revert changes to revision in node without updating dirstate"""
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226 return _merge.update(repo, node, force=True, partial=choose,
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227 show_stats=False, wlock=wlock)
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228
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229 def verify(repo):
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230 """verify the consistency of a repository"""
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231 return _verify.verify(repo)