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annotate mercurial/unionrepo.py @ 42824:64c3db458d08

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unionrepo: use a lower level overide in unionrepo too The unionrepo class also have a strange `baserevision` hack, let's try to get ride of it too.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Fri, 30 Aug 2019 17:45:38 +0200
parents 64387cd2bf4d
children 62a39c868b20
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # unionrepo.py - repository class for viewing union of repository changesets
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2 #
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3 # Derived from bundlerepo.py
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4 # Copyright 2006, 2007 Benoit Boissinot <bboissin@gmail.com>
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5 # Copyright 2013 Unity Technologies, Mads Kiilerich <madski@unity3d.com>
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6 #
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7 # This software may be used and distributed according to the terms of the
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8 # GNU General Public License version 2 or any later version.
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9
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10 """Repository class for "in-memory pull" of one local repository to another,
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11 allowing operations like diff and log with revsets.
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12 """
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13
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14 from __future__ import absolute_import
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15
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16 from .i18n import _
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17
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18 from . import (
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19 changelog,
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20 cmdutil,
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21 encoding,
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22 error,
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23 filelog,
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24 localrepo,
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25 manifest,
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26 mdiff,
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27 pathutil,
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28 revlog,
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29 util,
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30 vfs as vfsmod,
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31 )
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32
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33 class unionrevlog(revlog.revlog):
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34 def __init__(self, opener, indexfile, revlog2, linkmapper):
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35 # How it works:
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36 # To retrieve a revision, we just need to know the node id so we can
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37 # look it up in revlog2.
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38 #
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39 # To differentiate a rev in the second revlog from a rev in the revlog,
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40 # we check revision against repotiprev.
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41 opener = vfsmod.readonlyvfs(opener)
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42 revlog.revlog.__init__(self, opener, indexfile)
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43 self.revlog2 = revlog2
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44
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45 n = len(self)
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46 self.repotiprev = n - 1
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47 self.bundlerevs = set() # used by 'bundle()' revset expression
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48 for rev2 in self.revlog2:
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49 rev = self.revlog2.index[rev2]
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50 # rev numbers - in revlog2, very different from self.rev
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51 _start, _csize, rsize, base, linkrev, p1rev, p2rev, node = rev
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52 flags = _start & 0xFFFF
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53
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54 if linkmapper is None: # link is to same revlog
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55 assert linkrev == rev2 # we never link back
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56 link = n
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57 else: # rev must be mapped from repo2 cl to unified cl by linkmapper
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58 link = linkmapper(linkrev)
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59
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60 if linkmapper is not None: # link is to same revlog
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61 base = linkmapper(base)
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62
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63 if node in self.nodemap:
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64 # this happens for the common revlog revisions
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65 self.bundlerevs.add(self.nodemap[node])
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66 continue
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67
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68 p1node = self.revlog2.node(p1rev)
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69 p2node = self.revlog2.node(p2rev)
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70
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71 # TODO: it's probably wrong to set compressed length to None, but
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72 # I have no idea if csize is valid in the base revlog context.
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73 e = (flags, None, rsize, base,
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74 link, self.rev(p1node), self.rev(p2node), node)
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75 self.index.append(e)
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76 self.nodemap[node] = n
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77 self.bundlerevs.add(n)
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78 n += 1
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79
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80 def _chunk(self, rev):
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81 if rev <= self.repotiprev:
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82 return revlog.revlog._chunk(self, rev)
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83 return self.revlog2._chunk(self.node(rev))
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84
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85 def revdiff(self, rev1, rev2):
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86 """return or calculate a delta between two revisions"""
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87 if rev1 > self.repotiprev and rev2 > self.repotiprev:
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88 return self.revlog2.revdiff(
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89 self.revlog2.rev(self.node(rev1)),
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90 self.revlog2.rev(self.node(rev2)))
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91 elif rev1 <= self.repotiprev and rev2 <= self.repotiprev:
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92 return self.baserevdiff(rev1, rev2)
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93
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94 return mdiff.textdiff(self.revision(rev1), self.revision(rev2))
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95
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96 def _revisiondata(self, nodeorrev, _df=None, raw=False):
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97 if isinstance(nodeorrev, int):
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98 rev = nodeorrev
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99 node = self.node(rev)
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100 else:
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101 node = nodeorrev
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102 rev = self.rev(node)
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103
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104 if rev > self.repotiprev:
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105 # work around manifestrevlog NOT being a revlog
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106 revlog2 = getattr(self.revlog2, '_revlog', self.revlog2)
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107 func = revlog2._revisiondata
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108 else:
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109 func = super(unionrevlog, self)._revisiondata
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110 return func(node, _df=_df, raw=raw)
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111
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112 def rawdata(self, nodeorrev, _df=None):
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113 return self.revision(nodeorrev, _df=_df, raw=True)
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114
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115 def baserevision(self, nodeorrev):
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116 # Revlog subclasses may override 'revision' method to modify format of
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117 # content retrieved from revlog. To use unionrevlog with such class one
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118 # needs to override 'baserevision' and make more specific call here.
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119 return revlog.revlog.revision(self, nodeorrev)
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120
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121 def baserevdiff(self, rev1, rev2):
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122 # Exists for the same purpose as baserevision.
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123 return revlog.revlog.revdiff(self, rev1, rev2)
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124
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125 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None):
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diff changeset
126 raise NotImplementedError
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parents: 41038
diff changeset
127 def addgroup(self, deltas, linkmapper, transaction, addrevisioncb=None,
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diff changeset
128 maybemissingparents=False):
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diff changeset
129 raise NotImplementedError
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diff changeset
130 def strip(self, minlink, transaction):
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131 raise NotImplementedError
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132 def checksize(self):
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diff changeset
133 raise NotImplementedError
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134
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diff changeset
135 class unionchangelog(unionrevlog, changelog.changelog):
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136 def __init__(self, opener, opener2):
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diff changeset
137 changelog.changelog.__init__(self, opener)
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138 linkmapper = None
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diff changeset
139 changelog2 = changelog.changelog(opener2)
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140 unionrevlog.__init__(self, opener, self.indexfile, changelog2,
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diff changeset
141 linkmapper)
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142
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143 def baserevision(self, nodeorrev):
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144 # Although changelog doesn't override 'revision' method, some extensions
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145 # may replace this class with another that does. Same story with
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146 # manifest and filelog classes.
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147 return changelog.changelog.revision(self, nodeorrev)
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148
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149 def baserevdiff(self, rev1, rev2):
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150 return changelog.changelog.revdiff(self, rev1, rev2)
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151
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diff changeset
152 class unionmanifest(unionrevlog, manifest.manifestrevlog):
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153 def __init__(self, opener, opener2, linkmapper):
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diff changeset
154 manifest.manifestrevlog.__init__(self, opener)
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Durham Goode <durham@fb.com>
parents: 30218
diff changeset
155 manifest2 = manifest.manifestrevlog(opener2)
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diff changeset
156 unionrevlog.__init__(self, opener, self.indexfile, manifest2,
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diff changeset
157 linkmapper)
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diff changeset
158
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159 def baserevision(self, nodeorrev):
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160 return manifest.manifestrevlog.revision(self, nodeorrev)
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161
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diff changeset
162 def baserevdiff(self, rev1, rev2):
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diff changeset
163 return manifest.manifestrevlog.revdiff(self, rev1, rev2)
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diff changeset
164
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parents: 34219
diff changeset
165 class unionfilelog(filelog.filelog):
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166 def __init__(self, opener, path, opener2, linkmapper, repo):
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diff changeset
167 filelog.filelog.__init__(self, opener, path)
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diff changeset
168 filelog2 = filelog.filelog(opener2, path)
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1541e1a8e87d filelog: wrap revlog instead of inheriting it (API)
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parents: 34219
diff changeset
169 self._revlog = unionrevlog(opener, self.indexfile,
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parents: 34219
diff changeset
170 filelog2._revlog, linkmapper)
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171 self._repo = repo
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diff changeset
172 self.repotiprev = self._revlog.repotiprev
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parents: 34219
diff changeset
173 self.revlog2 = self._revlog.revlog2
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174
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175 def baserevision(self, nodeorrev):
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diff changeset
176 return filelog.filelog.revision(self, nodeorrev)
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diff changeset
177
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diff changeset
178 def baserevdiff(self, rev1, rev2):
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179 return filelog.filelog.revdiff(self, rev1, rev2)
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diff changeset
180
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parents: 24003
diff changeset
181 def iscensored(self, rev):
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parents: 24003
diff changeset
182 """Check if a revision is censored."""
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Mike Edgar <adgar@google.com>
parents: 24003
diff changeset
183 if rev <= self.repotiprev:
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Mike Edgar <adgar@google.com>
parents: 24003
diff changeset
184 return filelog.filelog.iscensored(self, rev)
27723
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Sean Farley <sean@farley.io>
parents: 26587
diff changeset
185 node = self.node(rev)
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Sean Farley <sean@farley.io>
parents: 26587
diff changeset
186 return self.revlog2.iscensored(self.revlog2.rev(node))
24118
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parents: 24003
diff changeset
187
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188 class unionpeer(localrepo.localpeer):
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189 def canpush(self):
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190 return False
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191
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diff changeset
192 class unionrepository(object):
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diff changeset
193 """Represents the union of data in 2 repositories.
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194
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195 Instances are not usable if constructed directly. Use ``instance()``
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diff changeset
196 or ``makeunionrepository()`` to create a usable instance.
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197 """
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198 def __init__(self, repo2, url):
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199 self.repo2 = repo2
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diff changeset
200 self._url = url
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parents: 39549
diff changeset
201
20790
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parents: 19630
diff changeset
202 self.ui.setconfig('phases', 'publish', False, 'unionrepo')
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203
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diff changeset
204 @localrepo.unfilteredpropertycache
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diff changeset
205 def changelog(self):
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parents: 20790
diff changeset
206 return unionchangelog(self.svfs, self.repo2.svfs)
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diff changeset
207
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parents: 39605
diff changeset
208 @localrepo.unfilteredpropertycache
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parents: 39605
diff changeset
209 def manifestlog(self):
5ccd791344f3 localrepo: pass root manifest into manifestlog.__init__
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parents: 39605
diff changeset
210 rootstore = unionmanifest(self.svfs, self.repo2.svfs,
5ccd791344f3 localrepo: pass root manifest into manifestlog.__init__
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39605
diff changeset
211 self.unfiltered()._clrev)
41038
3913223417ea manifest: accept narrowmatch into constructor instead of getting from repo
Martin von Zweigbergk <martinvonz@google.com>
parents: 40052
diff changeset
212 return manifest.manifestlog(self.svfs, self, rootstore,
3913223417ea manifest: accept narrowmatch into constructor instead of getting from repo
Martin von Zweigbergk <martinvonz@google.com>
parents: 40052
diff changeset
213 self.narrowmatch())
39763
5ccd791344f3 localrepo: pass root manifest into manifestlog.__init__
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parents: 39605
diff changeset
214
18944
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diff changeset
215 def _clrev(self, rev2):
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parents:
diff changeset
216 """map from repo2 changelog rev to temporary rev in self.changelog"""
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parents:
diff changeset
217 node = self.repo2.changelog.node(rev2)
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parents:
diff changeset
218 return self.changelog.rev(node)
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diff changeset
219
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parents:
diff changeset
220 def url(self):
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parents:
diff changeset
221 return self._url
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parents:
diff changeset
222
a9c443b3b240 unionrepo: read-only operations on a union of two localrepos
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diff changeset
223 def file(self, f):
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Angel Ezquerra <angel.ezquerra@gmail.com>
parents: 20790
diff changeset
224 return unionfilelog(self.svfs, f, self.repo2.svfs,
28222
b966e35aad78 unionrepo: properly handle hidden linkrev in revlog (issue5070)
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 27750
diff changeset
225 self.unfiltered()._clrev, self)
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diff changeset
226
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diff changeset
227 def close(self):
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diff changeset
228 self.repo2.close()
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diff changeset
229
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diff changeset
230 def cancopy(self):
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parents:
diff changeset
231 return False
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diff changeset
232
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diff changeset
233 def peer(self):
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diff changeset
234 return unionpeer(self)
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235
a9c443b3b240 unionrepo: read-only operations on a union of two localrepos
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diff changeset
236 def getcwd(self):
39818
24e493ec2229 py3: rename pycompat.getcwd() to encoding.getcwd() (API)
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parents: 39763
diff changeset
237 return encoding.getcwd() # always outside the repo
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diff changeset
238
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089fc0db0954 hg: allow extra arguments to be passed to repo creation (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 38850
diff changeset
239 def instance(ui, path, create, intents=None, createopts=None):
18944
a9c443b3b240 unionrepo: read-only operations on a union of two localrepos
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parents:
diff changeset
240 if create:
26587
56b2bcea2529 error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26230
diff changeset
241 raise error.Abort(_('cannot create new union repository'))
33182
634997248c97 configitems: register the 'bundle.mainreporoot' config
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 31724
diff changeset
242 parentpath = ui.config("bundle", "mainreporoot")
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parents:
diff changeset
243 if not parentpath:
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parents:
diff changeset
244 # try to find the correct path to the working directory repo
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Matt Harbison <matt_harbison@yahoo.com>
parents: 39763
diff changeset
245 parentpath = cmdutil.findrepo(encoding.getcwd())
18944
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parents:
diff changeset
246 if parentpath is None:
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parents:
diff changeset
247 parentpath = ''
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parents:
diff changeset
248 if parentpath:
a9c443b3b240 unionrepo: read-only operations on a union of two localrepos
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parents:
diff changeset
249 # Try to make the full path relative so we get a nice, short URL.
a9c443b3b240 unionrepo: read-only operations on a union of two localrepos
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parents:
diff changeset
250 # In particular, we don't want temp dir names in test outputs.
39818
24e493ec2229 py3: rename pycompat.getcwd() to encoding.getcwd() (API)
Matt Harbison <matt_harbison@yahoo.com>
parents: 39763
diff changeset
251 cwd = encoding.getcwd()
18944
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parents:
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252 if parentpath == cwd:
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253 parentpath = ''
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254 else:
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255 cwd = pathutil.normasprefix(cwd)
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256 if parentpath.startswith(cwd):
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257 parentpath = parentpath[len(cwd):]
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258 if path.startswith('union:'):
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259 s = path.split(":", 1)[1].split("+", 1)
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260 if len(s) == 1:
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261 repopath, repopath2 = parentpath, s[0]
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262 else:
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263 repopath, repopath2 = s
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264 else:
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265 repopath, repopath2 = parentpath, path
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266
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267 return makeunionrepository(ui, repopath, repopath2)
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268
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269 def makeunionrepository(ui, repopath1, repopath2):
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270 """Make a union repository object from 2 local repo paths."""
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271 repo1 = localrepo.instance(ui, repopath1, create=False)
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272 repo2 = localrepo.instance(ui, repopath2, create=False)
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273
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274 url = 'union:%s+%s' % (util.expandpath(repopath1),
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275 util.expandpath(repopath2))
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276
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277 class derivedunionrepository(unionrepository, repo1.__class__):
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278 pass
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279
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280 repo = repo1
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281 repo.__class__ = derivedunionrepository
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282 unionrepository.__init__(repo1, repo2, url)
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283
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284 return repo