Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/hg.py @ 3861:db36a4f490f6

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Indicate the purpose of the dummy changelog file in itself. Otherwise people getting an error message with an old installation might wonder why this file is corrupted.
author Thomas Arendsen Hein <thomas@intevation.de>
date Sun, 10 Dec 2006 23:03:53 +0100
parents 4f6db0233606
children ad6f34c83c3d
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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(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='', 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 ui.status(_("destination directory: %s\n") % dest)
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107
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108 def localpath(path):
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109 if path.startswith('file://'):
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110 return path[7:]
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111 if path.startswith('file:'):
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112 return path[5:]
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113 return path
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114
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115 dest = localpath(dest)
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116 source = localpath(source)
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117
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118 if os.path.exists(dest):
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119 raise util.Abort(_("destination '%s' already exists") % dest)
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120
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121 class DirCleanup(object):
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122 def __init__(self, dir_):
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123 self.rmtree = shutil.rmtree
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124 self.dir_ = dir_
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125 def close(self):
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126 self.dir_ = None
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127 def __del__(self):
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128 if self.dir_:
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129 self.rmtree(self.dir_, True)
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130
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131 dir_cleanup = None
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132 if islocal(dest):
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133 dir_cleanup = DirCleanup(dest)
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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 islocal(dest):
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138 abspath = os.path.abspath(source)
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diff changeset
139 copy = not pull and not rev
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140
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diff changeset
141 src_lock, dest_lock = None, None
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diff changeset
142 if copy:
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diff changeset
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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diff changeset
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 def force_copy(src, dst):
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154 try:
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155 util.copyfiles(src, dst)
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156 except OSError, inst:
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diff changeset
157 if inst.errno != errno.ENOENT:
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diff changeset
158 raise
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159
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160 src_store = os.path.realpath(src_repo.spath)
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161 if not os.path.exists(dest):
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162 os.mkdir(dest)
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163 dest_path = os.path.realpath(os.path.join(dest, ".hg"))
3849
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diff changeset
164 os.mkdir(dest_path)
3853
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diff changeset
165 if src_repo.spath != src_repo.path:
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diff changeset
166 dest_store = os.path.join(dest_path, "store")
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diff changeset
167 os.mkdir(dest_store)
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diff changeset
168 else:
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diff changeset
169 dest_store = dest_path
3851
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170 # copy the requires file
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diff changeset
171 force_copy(src_repo.join("requires"),
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diff changeset
172 os.path.join(dest_path, "requires"))
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diff changeset
173 # we lock here to avoid premature writing to the target
3791
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diff changeset
174 dest_lock = lock.lock(os.path.join(dest_store, "lock"))
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175
3713
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diff changeset
176 files = ("data",
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diff changeset
177 "00manifest.d", "00manifest.i",
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diff changeset
178 "00changelog.d", "00changelog.i")
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diff changeset
179 for f in files:
3791
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diff changeset
180 src = os.path.join(src_store, f)
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diff changeset
181 dst = os.path.join(dest_store, f)
3851
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diff changeset
182 force_copy(src, dst)
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diff changeset
183
2631
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diff changeset
184 # we need to re-init the repo after manually copying the data
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diff changeset
185 # into it
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diff changeset
186 dest_repo = repository(ui, dest)
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diff changeset
187
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188 else:
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diff changeset
189 dest_repo = repository(ui, dest, create=True)
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diff changeset
190
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191 revs = None
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diff changeset
192 if rev:
3448
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Eric Hopper <hopper@omnifarious.org>
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diff changeset
193 if 'lookup' not in src_repo.capabilities:
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diff changeset
194 raise util.Abort(_("src repository does not support revision "
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diff changeset
195 "lookup and so doesn't support clone by "
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diff changeset
196 "revision"))
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diff changeset
197 revs = [src_repo.lookup(r) for r in rev]
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diff changeset
198
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diff changeset
199 if dest_repo.local():
2613
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diff changeset
200 dest_repo.clone(src_repo, heads=revs, stream=stream)
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diff changeset
201 elif src_repo.local():
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diff changeset
202 src_repo.push(dest_repo, revs=revs)
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diff changeset
203 else:
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diff changeset
204 raise util.Abort(_("clone from remote to remote not supported"))
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diff changeset
205
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diff changeset
206 if src_lock:
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diff changeset
207 src_lock.release()
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diff changeset
208
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diff changeset
209 if dest_repo.local():
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diff changeset
210 fp = dest_repo.opener("hgrc", "w", text=True)
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diff changeset
211 fp.write("[paths]\n")
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diff changeset
212 fp.write("default = %s\n" % abspath)
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diff changeset
213 fp.close()
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diff changeset
214
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diff changeset
215 if dest_lock:
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diff changeset
216 dest_lock.release()
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diff changeset
217
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diff changeset
218 if update:
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diff changeset
219 _update(dest_repo, dest_repo.changelog.tip())
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diff changeset
220 if dir_cleanup:
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diff changeset
221 dir_cleanup.close()
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diff changeset
222
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diff changeset
223 return src_repo, dest_repo
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parents: 2798
diff changeset
224
3323
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diff changeset
225 def _showstats(repo, stats):
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diff changeset
226 stats = ((stats[0], _("updated")),
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diff changeset
227 (stats[1], _("merged")),
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parents: 3188
diff changeset
228 (stats[2], _("removed")),
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diff changeset
229 (stats[3], _("unresolved")))
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parents: 3188
diff changeset
230 note = ", ".join([_("%d files %s") % s for s in stats])
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parents: 3188
diff changeset
231 repo.ui.status("%s\n" % note)
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parents: 3188
diff changeset
232
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parents: 3188
diff changeset
233 def _update(repo, node): return update(repo, node)
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parents: 3188
diff changeset
234
2822
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Matt Mackall <mpm@selenic.com>
parents: 2802
diff changeset
235 def update(repo, node):
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diff changeset
236 """update the working directory to node, merging linear changes"""
3323
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diff changeset
237 stats = _merge.update(repo, node, False, False, None, None)
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parents: 3188
diff changeset
238 _showstats(repo, stats)
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parents: 3188
diff changeset
239 if stats[3]:
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parents: 3188
diff changeset
240 repo.ui.status(_("There are unresolved merges with"
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Matt Mackall <mpm@selenic.com>
parents: 3188
diff changeset
241 " locally modified files.\n"))
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diff changeset
242 return stats[3]
2799
b550cd82f92a Move merge code to its own module
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parents: 2798
diff changeset
243
2822
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Matt Mackall <mpm@selenic.com>
parents: 2802
diff changeset
244 def clean(repo, node, wlock=None, show_stats=True):
30f59f4a327e Introduce update helper functions: update, merge, clean, and revert
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diff changeset
245 """forcibly switch the working directory to node, clobbering changes"""
3323
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diff changeset
246 stats = _merge.update(repo, node, False, True, None, wlock)
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parents: 3188
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247 if show_stats: _showstats(repo, stats)
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248 return stats[3]
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249
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250 def merge(repo, node, force=None, remind=True, wlock=None):
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251 """branch merge with node, resolving changes"""
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252 stats = _merge.update(repo, node, True, force, False, wlock)
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253 _showstats(repo, stats)
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254 if stats[3]:
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255 pl = repo.parents()
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256 repo.ui.status(_("There are unresolved merges,"
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257 " you can redo the full merge using:\n"
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258 " hg update -C %s\n"
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259 " hg merge %s\n")
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260 % (pl[0].rev(), pl[1].rev()))
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261 elif remind:
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262 repo.ui.status(_("(branch merge, don't forget to commit)\n"))
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263 return stats[3]
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264
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265 def revert(repo, node, choose, wlock):
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266 """revert changes to revision in node without updating dirstate"""
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267 return _merge.update(repo, node, False, True, choose, wlock)[3]
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268
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269 def verify(repo):
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270 """verify the consistency of a repository"""
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271 return _verify.verify(repo)