annotate hgext/convert/bzr.py @ 12161:dfb11f9922c1

tests: remove unneeded -u flags
author Martin Geisler <mg@lazybytes.net>
date Thu, 02 Sep 2010 23:45:47 +0200
parents 516b000fbb7e
children 6ba2fc0a87ab
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # bzr.py - bzr support for the convert extension
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2 #
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3 # Copyright 2008, 2009 Marek Kubica <marek@xivilization.net> and others
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 # This module is for handling 'bzr', that was formerly known as Bazaar-NG;
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9 # it cannot access 'bar' repositories, but they were never used very much
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10
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11 import os
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12 from mercurial import demandimport
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13 # these do not work with demandimport, blacklist
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14 demandimport.ignore.extend([
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15 'bzrlib.transactions',
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16 'bzrlib.urlutils',
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17 'ElementPath',
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18 ])
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19
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20 from mercurial.i18n import _
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21 from mercurial import util
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22 from common import NoRepo, commit, converter_source
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23
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24 try:
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25 # bazaar imports
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26 from bzrlib import branch, revision, errors
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27 from bzrlib.revisionspec import RevisionSpec
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28 except ImportError:
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29 pass
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30
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31 supportedkinds = ('file', 'symlink')
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32
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33 class bzr_source(converter_source):
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34 """Reads Bazaar repositories by using the Bazaar Python libraries"""
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35
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36 def __init__(self, ui, path, rev=None):
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37 super(bzr_source, self).__init__(ui, path, rev=rev)
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38
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39 if not os.path.exists(os.path.join(path, '.bzr')):
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40 raise NoRepo(_('%s does not look like a Bazaar repository')
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41 % path)
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42
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43 try:
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44 # access bzrlib stuff
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45 branch
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46 except NameError:
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47 raise NoRepo(_('Bazaar modules could not be loaded'))
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48
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49 path = os.path.abspath(path)
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50 self._checkrepotype(path)
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51 self.branch = branch.Branch.open(path)
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52 self.sourcerepo = self.branch.repository
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53 self._parentids = {}
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54
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55 def _checkrepotype(self, path):
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56 # Lightweight checkouts detection is informational but probably
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57 # fragile at API level. It should not terminate the conversion.
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58 try:
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59 from bzrlib import bzrdir
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60 dir = bzrdir.BzrDir.open_containing(path)[0]
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61 try:
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62 tree = dir.open_workingtree(recommend_upgrade=False)
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63 branch = tree.branch
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64 except (errors.NoWorkingTree, errors.NotLocalUrl):
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65 tree = None
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66 branch = dir.open_branch()
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67 if (tree is not None and tree.bzrdir.root_transport.base !=
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68 branch.bzrdir.root_transport.base):
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69 self.ui.warn(_('warning: lightweight checkouts may cause '
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70 'conversion failures, try with a regular '
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71 'branch instead.\n'))
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72 except:
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73 self.ui.note(_('bzr source type could not be determined\n'))
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74
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75 def before(self):
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76 """Before the conversion begins, acquire a read lock
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77 for all the operations that might need it. Fortunately
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78 read locks don't block other reads or writes to the
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79 repository, so this shouldn't have any impact on the usage of
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80 the source repository.
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81
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82 The alternative would be locking on every operation that
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83 needs locks (there are currently two: getting the file and
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84 getting the parent map) and releasing immediately after,
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85 but this approach can take even 40% longer."""
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86 self.sourcerepo.lock_read()
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87
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88 def after(self):
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89 self.sourcerepo.unlock()
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90
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91 def getheads(self):
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92 if not self.rev:
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93 return [self.branch.last_revision()]
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94 try:
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95 r = RevisionSpec.from_string(self.rev)
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96 info = r.in_history(self.branch)
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97 except errors.BzrError:
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98 raise util.Abort(_('%s is not a valid revision in current branch')
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99 % self.rev)
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100 return [info.rev_id]
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101
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102 def getfile(self, name, rev):
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103 revtree = self.sourcerepo.revision_tree(rev)
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104 fileid = revtree.path2id(name.decode(self.encoding or 'utf-8'))
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105 kind = None
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106 if fileid is not None:
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107 kind = revtree.kind(fileid)
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108 if kind not in supportedkinds:
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109 # the file is not available anymore - was deleted
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110 raise IOError(_('%s is not available in %s anymore') %
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111 (name, rev))
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112 mode = self._modecache[(name, rev)]
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113 if kind == 'symlink':
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114 target = revtree.get_symlink_target(fileid)
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115 if target is None:
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116 raise util.Abort(_('%s.%s symlink has no target')
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117 % (name, rev))
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118 return target, mode
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119 else:
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120 sio = revtree.get_file(fileid)
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121 return sio.read(), mode
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122
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123 def getchanges(self, version):
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124 # set up caches: modecache and revtree
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125 self._modecache = {}
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126 self._revtree = self.sourcerepo.revision_tree(version)
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127 # get the parentids from the cache
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128 parentids = self._parentids.pop(version)
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129 # only diff against first parent id
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130 prevtree = self.sourcerepo.revision_tree(parentids[0])
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131 return self._gettreechanges(self._revtree, prevtree)
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132
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133 def getcommit(self, version):
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134 rev = self.sourcerepo.get_revision(version)
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135 # populate parent id cache
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136 if not rev.parent_ids:
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137 parents = []
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138 self._parentids[version] = (revision.NULL_REVISION,)
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139 else:
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140 parents = self._filterghosts(rev.parent_ids)
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141 self._parentids[version] = parents
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142
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143 return commit(parents=parents,
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144 date='%d %d' % (rev.timestamp, -rev.timezone),
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145 author=self.recode(rev.committer),
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146 # bzr returns bytestrings or unicode, depending on the content
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147 desc=self.recode(rev.message),
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148 rev=version)
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149
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150 def gettags(self):
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151 if not self.branch.supports_tags():
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152 return {}
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153 tagdict = self.branch.tags.get_tag_dict()
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154 bytetags = {}
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155 for name, rev in tagdict.iteritems():
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156 bytetags[self.recode(name)] = rev
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157 return bytetags
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158
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159 def getchangedfiles(self, rev, i):
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160 self._modecache = {}
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161 curtree = self.sourcerepo.revision_tree(rev)
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162 if i is not None:
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78658990c725 convert/bzr: make it work with filemaps (issue1631)
Patrick Mezard <pmezard@gmail.com>
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163 parentid = self._parentids[rev][i]
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164 else:
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165 # no parent id, get the empty revision
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166 parentid = revision.NULL_REVISION
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167
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168 prevtree = self.sourcerepo.revision_tree(parentid)
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169 changes = [e[0] for e in self._gettreechanges(curtree, prevtree)[0]]
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170 return changes
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171
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172 def _gettreechanges(self, current, origin):
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173 revid = current._revision_id
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174 changes = []
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175 renames = {}
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176 for (fileid, paths, changed_content, versioned, parent, name,
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177 kind, executable) in current.iter_changes(origin):
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178
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179 if paths[0] == u'' or paths[1] == u'':
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180 # ignore changes to tree root
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181 continue
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182
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183 # bazaar tracks directories, mercurial does not, so
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184 # we have to rename the directory contents
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185 if kind[1] == 'directory':
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186 if kind[0] not in (None, 'directory'):
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187 # Replacing 'something' with a directory, record it
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188 # so it can be removed.
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189 changes.append((self.recode(paths[0]), revid))
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190
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191 if None not in paths and paths[0] != paths[1]:
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192 # neither an add nor an delete - a move
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193 # rename all directory contents manually
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194 subdir = origin.inventory.path2id(paths[0])
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195 # get all child-entries of the directory
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196 for name, entry in origin.inventory.iter_entries(subdir):
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197 # hg does not track directory renames
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198 if entry.kind == 'directory':
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199 continue
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200 frompath = self.recode(paths[0] + '/' + name)
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201 topath = self.recode(paths[1] + '/' + name)
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202 # register the files as changed
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203 changes.append((frompath, revid))
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204 changes.append((topath, revid))
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205 # add to mode cache
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206 mode = ((entry.executable and 'x')
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207 or (entry.kind == 'symlink' and 's')
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208 or '')
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209 self._modecache[(topath, revid)] = mode
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210 # register the change as move
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211 renames[topath] = frompath
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212
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213 # no futher changes, go to the next change
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214 continue
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215
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216 # we got unicode paths, need to convert them
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217 path, topath = [self.recode(part) for part in paths]
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218
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219 if topath is None:
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220 # file deleted
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221 changes.append((path, revid))
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222 continue
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223
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224 # renamed
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225 if path and path != topath:
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226 renames[topath] = path
8035
cb77c0fbec39 convert: remove renamed source files (issue1505)
Xavier ALT <dex@phoenix-ind.net>
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227 changes.append((path, revid))
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228
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229 # populate the mode cache
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230 kind, executable = [e[1] for e in (kind, executable)]
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adce97d28389 convert/bzr: fix symlink handling (issue1626)
Patrick Mezard <pmezard@gmail.com>
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diff changeset
231 mode = ((executable and 'x') or (kind == 'symlink' and 'l')
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232 or '')
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233 self._modecache[(topath, revid)] = mode
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234 changes.append((topath, revid))
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235
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236 return changes, renames
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237
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238 def _filterghosts(self, ids):
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239 """Filters out ghost revisions which hg does not support, see
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240 <http://bazaar-vcs.org/GhostRevision>
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241 """
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242 parentmap = self.sourcerepo.get_parent_map(ids)
7060
972cce34f345 convert: fixed python2.3 incompatibility in bzr source (generator expression)
Dirkjan Ochtman <dirkjan@ochtman.nl>
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243 parents = tuple([parent for parent in ids if parent in parentmap])
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244 return parents
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245
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246 def recode(self, s, encoding=None):
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247 """This version of recode tries to encode unicode to bytecode,
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248 and preferably using the UTF-8 codec.
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249 Other types than Unicode are silently returned, this is by
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250 intention, e.g. the None-type is not going to be encoded but instead
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251 just passed through
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252 """
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253 if not encoding:
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254 encoding = self.encoding or 'utf-8'
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255
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256 if isinstance(s, unicode):
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257 return s.encode(encoding)
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258 else:
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259 # leave it alone
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260 return s