Mercurial > hg
annotate hgext/convert/bzr.py @ 46602:a687a7f27951
rust: Move config value parsing functions to a new module
Differential Revision: https://phab.mercurial-scm.org/D10021
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Wed, 17 Feb 2021 20:24:04 +0100 |
parents | 89a2afe31e82 |
children | 26127236b229 |
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 |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
7053 | 8 # This module is for handling 'bzr', that was formerly known as Bazaar-NG; |
9 # it cannot access 'bar' repositories, but they were never used very much | |
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10 from __future__ import absolute_import |
7053 | 11 |
12 import os | |
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13 |
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14 from mercurial.i18n import _ |
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15 from mercurial import ( |
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16 demandimport, |
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17 error, |
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18 pycompat, |
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19 ) |
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20 from . import common |
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21 |
7053 | 22 # these do not work with demandimport, blacklist |
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23 demandimport.IGNORES.update( |
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24 [ |
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25 b'bzrlib.transactions', |
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26 b'bzrlib.urlutils', |
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27 b'ElementPath', |
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28 ] |
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29 ) |
7053 | 30 |
31 try: | |
32 # bazaar imports | |
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33 import bzrlib.bzrdir |
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34 import bzrlib.errors |
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35 import bzrlib.revision |
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36 import bzrlib.revisionspec |
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37 |
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38 bzrdir = bzrlib.bzrdir |
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39 errors = bzrlib.errors |
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40 revision = bzrlib.revision |
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41 revisionspec = bzrlib.revisionspec |
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42 revisionspec.RevisionSpec |
7053 | 43 except ImportError: |
44 pass | |
45 | |
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46 supportedkinds = (b'file', b'symlink') |
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47 |
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48 |
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49 class bzr_source(common.converter_source): |
7053 | 50 """Reads Bazaar repositories by using the Bazaar Python libraries""" |
51 | |
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52 def __init__(self, ui, repotype, path, revs=None): |
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53 super(bzr_source, self).__init__(ui, repotype, path, revs=revs) |
7053 | 54 |
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55 if not os.path.exists(os.path.join(path, b'.bzr')): |
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56 raise common.NoRepo( |
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57 _(b'%s does not look like a Bazaar repository') % path |
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58 ) |
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59 |
7053 | 60 try: |
61 # access bzrlib stuff | |
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62 bzrdir |
7053 | 63 except NameError: |
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64 raise common.NoRepo(_(b'Bazaar modules could not be loaded')) |
7053 | 65 |
66 path = os.path.abspath(path) | |
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67 self._checkrepotype(path) |
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68 try: |
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69 self.sourcerepo = bzrdir.BzrDir.open(path).open_repository() |
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70 except errors.NoRepositoryPresent: |
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71 raise common.NoRepo( |
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72 _(b'%s does not look like a Bazaar repository') % path |
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73 ) |
7053 | 74 self._parentids = {} |
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75 self._saverev = ui.configbool(b'convert', b'bzr.saverev') |
7053 | 76 |
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77 def _checkrepotype(self, path): |
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78 # Lightweight checkouts detection is informational but probably |
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79 # fragile at API level. It should not terminate the conversion. |
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80 try: |
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81 dir = bzrdir.BzrDir.open_containing(path)[0] |
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82 try: |
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83 tree = dir.open_workingtree(recommend_upgrade=False) |
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84 branch = tree.branch |
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85 except (errors.NoWorkingTree, errors.NotLocalUrl): |
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86 tree = None |
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87 branch = dir.open_branch() |
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88 if ( |
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89 tree is not None |
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90 and tree.bzrdir.root_transport.base |
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91 != branch.bzrdir.root_transport.base |
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92 ): |
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93 self.ui.warn( |
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94 _( |
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95 b'warning: lightweight checkouts may cause ' |
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96 b'conversion failures, try with a regular ' |
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97 b'branch instead.\n' |
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98 ) |
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99 ) |
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100 except Exception: |
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101 self.ui.note(_(b'bzr source type could not be determined\n')) |
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102 |
7053 | 103 def before(self): |
104 """Before the conversion begins, acquire a read lock | |
105 for all the operations that might need it. Fortunately | |
106 read locks don't block other reads or writes to the | |
107 repository, so this shouldn't have any impact on the usage of | |
108 the source repository. | |
109 | |
110 The alternative would be locking on every operation that | |
111 needs locks (there are currently two: getting the file and | |
112 getting the parent map) and releasing immediately after, | |
113 but this approach can take even 40% longer.""" | |
114 self.sourcerepo.lock_read() | |
115 | |
116 def after(self): | |
117 self.sourcerepo.unlock() | |
118 | |
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119 def _bzrbranches(self): |
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120 return self.sourcerepo.find_branches(using=True) |
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121 |
7053 | 122 def getheads(self): |
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123 if not self.revs: |
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124 # Set using=True to avoid nested repositories (see issue3254) |
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125 heads = sorted([b.last_revision() for b in self._bzrbranches()]) |
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126 else: |
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127 revid = None |
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128 for branch in self._bzrbranches(): |
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129 try: |
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130 r = revisionspec.RevisionSpec.from_string(self.revs[0]) |
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131 info = r.in_history(branch) |
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132 except errors.BzrError: |
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133 pass |
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134 revid = info.rev_id |
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135 if revid is None: |
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136 raise error.Abort( |
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137 _(b'%s is not a valid revision') % self.revs[0] |
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138 ) |
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139 heads = [revid] |
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140 # Empty repositories return 'null:', which cannot be retrieved |
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141 heads = [h for h in heads if h != b'null:'] |
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142 return heads |
7053 | 143 |
144 def getfile(self, name, rev): | |
145 revtree = self.sourcerepo.revision_tree(rev) | |
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146 fileid = revtree.path2id(name.decode(self.encoding or b'utf-8')) |
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147 kind = None |
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148 if fileid is not None: |
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149 kind = revtree.kind(fileid) |
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150 if kind not in supportedkinds: |
7053 | 151 # the file is not available anymore - was deleted |
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152 return None, None |
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153 mode = self._modecache[(name, rev)] |
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154 if kind == b'symlink': |
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155 target = revtree.get_symlink_target(fileid) |
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156 if target is None: |
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157 raise error.Abort( |
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158 _(b'%s.%s symlink has no target') % (name, rev) |
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159 ) |
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160 return target, mode |
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161 else: |
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162 sio = revtree.get_file(fileid) |
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163 return sio.read(), mode |
7053 | 164 |
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165 def getchanges(self, version, full): |
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166 if full: |
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167 raise error.Abort(_(b"convert from cvs does not support --full")) |
7053 | 168 self._modecache = {} |
169 self._revtree = self.sourcerepo.revision_tree(version) | |
170 # get the parentids from the cache | |
171 parentids = self._parentids.pop(version) | |
172 # only diff against first parent id | |
173 prevtree = self.sourcerepo.revision_tree(parentids[0]) | |
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174 files, changes = self._gettreechanges(self._revtree, prevtree) |
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175 return files, changes, set() |
7053 | 176 |
177 def getcommit(self, version): | |
178 rev = self.sourcerepo.get_revision(version) | |
179 # populate parent id cache | |
180 if not rev.parent_ids: | |
181 parents = [] | |
182 self._parentids[version] = (revision.NULL_REVISION,) | |
183 else: | |
184 parents = self._filterghosts(rev.parent_ids) | |
185 self._parentids[version] = parents | |
186 | |
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187 branch = self.recode(rev.properties.get(b'branch-nick', u'default')) |
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188 if branch == b'trunk': |
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189 branch = b'default' |
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190 return common.commit( |
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191 parents=parents, |
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192 date=b'%d %d' % (rev.timestamp, -rev.timezone), |
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193 author=self.recode(rev.committer), |
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194 desc=self.recode(rev.message), |
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195 branch=branch, |
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196 rev=version, |
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197 saverev=self._saverev, |
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198 ) |
7053 | 199 |
200 def gettags(self): | |
201 bytetags = {} | |
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202 for branch in self._bzrbranches(): |
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203 if not branch.supports_tags(): |
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204 return {} |
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205 tagdict = branch.tags.get_tag_dict() |
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206 for name, rev in pycompat.iteritems(tagdict): |
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207 bytetags[self.recode(name)] = rev |
7053 | 208 return bytetags |
209 | |
210 def getchangedfiles(self, rev, i): | |
211 self._modecache = {} | |
212 curtree = self.sourcerepo.revision_tree(rev) | |
213 if i is not None: | |
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214 parentid = self._parentids[rev][i] |
7053 | 215 else: |
216 # no parent id, get the empty revision | |
217 parentid = revision.NULL_REVISION | |
218 | |
219 prevtree = self.sourcerepo.revision_tree(parentid) | |
220 changes = [e[0] for e in self._gettreechanges(curtree, prevtree)[0]] | |
221 return changes | |
222 | |
223 def _gettreechanges(self, current, origin): | |
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224 revid = current._revision_id |
7053 | 225 changes = [] |
226 renames = {} | |
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227 seen = set() |
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228 |
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229 # Fall back to the deprecated attribute for legacy installations. |
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230 try: |
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231 inventory = origin.root_inventory |
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232 except AttributeError: |
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233 inventory = origin.inventory |
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234 |
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235 # Process the entries by reverse lexicographic name order to |
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236 # handle nested renames correctly, most specific first. |
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237 curchanges = sorted( |
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238 current.iter_changes(origin), |
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239 key=lambda c: c[1][0] or c[1][1], |
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240 reverse=True, |
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241 ) |
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242 for ( |
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243 fileid, |
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244 paths, |
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245 changed_content, |
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246 versioned, |
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247 parent, |
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248 name, |
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249 kind, |
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250 executable, |
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251 ) in curchanges: |
7053 | 252 |
253 if paths[0] == u'' or paths[1] == u'': | |
254 # ignore changes to tree root | |
255 continue | |
256 | |
257 # bazaar tracks directories, mercurial does not, so | |
258 # we have to rename the directory contents | |
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259 if kind[1] == b'directory': |
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260 if kind[0] not in (None, b'directory'): |
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261 # Replacing 'something' with a directory, record it |
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262 # so it can be removed. |
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263 changes.append((self.recode(paths[0]), revid)) |
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264 |
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265 if kind[0] == b'directory' and None not in paths: |
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266 renaming = paths[0] != paths[1] |
7053 | 267 # neither an add nor an delete - a move |
268 # rename all directory contents manually | |
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269 subdir = inventory.path2id(paths[0]) |
7053 | 270 # get all child-entries of the directory |
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271 for name, entry in inventory.iter_entries(subdir): |
7053 | 272 # hg does not track directory renames |
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273 if entry.kind == b'directory': |
7053 | 274 continue |
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275 frompath = self.recode(paths[0] + b'/' + name) |
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276 if frompath in seen: |
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277 # Already handled by a more specific change entry |
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278 # This is important when you have: |
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279 # a => b |
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280 # a/c => a/c |
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281 # Here a/c must not be renamed into b/c |
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282 continue |
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283 seen.add(frompath) |
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284 if not renaming: |
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285 continue |
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286 topath = self.recode(paths[1] + b'/' + name) |
7053 | 287 # register the files as changed |
288 changes.append((frompath, revid)) | |
289 changes.append((topath, revid)) | |
290 # add to mode cache | |
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291 mode = ( |
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292 (entry.executable and b'x') |
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293 or (entry.kind == b'symlink' and b's') |
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294 or b'' |
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295 ) |
7053 | 296 self._modecache[(topath, revid)] = mode |
297 # register the change as move | |
298 renames[topath] = frompath | |
299 | |
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300 # no further changes, go to the next change |
7053 | 301 continue |
302 | |
303 # we got unicode paths, need to convert them | |
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304 path, topath = paths |
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305 if path is not None: |
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306 path = self.recode(path) |
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307 if topath is not None: |
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308 topath = self.recode(topath) |
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309 seen.add(path or topath) |
7053 | 310 |
311 if topath is None: | |
312 # file deleted | |
313 changes.append((path, revid)) | |
314 continue | |
315 | |
316 # renamed | |
317 if path and path != topath: | |
318 renames[topath] = path | |
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cb77c0fbec39
convert: remove renamed source files (issue1505)
Xavier ALT <dex@phoenix-ind.net>
parents:
7060
diff
changeset
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319 changes.append((path, revid)) |
7053 | 320 |
321 # populate the mode cache | |
322 kind, executable = [e[1] for e in (kind, executable)] | |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
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323 mode = (executable and b'x') or (kind == b'symlink' and b'l') or b'' |
7053 | 324 self._modecache[(topath, revid)] = mode |
325 changes.append((topath, revid)) | |
326 | |
327 return changes, renames | |
328 | |
329 def _filterghosts(self, ids): | |
330 """Filters out ghost revisions which hg does not support, see | |
331 <http://bazaar-vcs.org/GhostRevision> | |
332 """ | |
333 parentmap = self.sourcerepo.get_parent_map(ids) | |
7060
972cce34f345
convert: fixed python2.3 incompatibility in bzr source (generator expression)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents:
7053
diff
changeset
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334 parents = tuple([parent for parent in ids if parent in parentmap]) |
7053 | 335 return parents |