Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/unionrepo.py @ 47162:a07d5cb03a85

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revlog: rename `indexfile` to `_indexfile` We want to make the actual location of the indexfile and location more of an implementation details than what is is currently. In that process, we make the attribute private. Differential Revision: https://phab.mercurial-scm.org/D10574
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Mon, 03 May 2021 12:22:16 +0200
parents 8a1a51d31e85
children 8d3c2f9d4af7
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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 from .pycompat import getattr
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18
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19 from . import (
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20 changelog,
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21 cmdutil,
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22 encoding,
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23 error,
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24 filelog,
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25 localrepo,
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26 manifest,
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27 mdiff,
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28 pathutil,
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29 revlog,
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30 util,
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31 vfs as vfsmod,
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32 )
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33
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34
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35 class unionrevlog(revlog.revlog):
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36 def __init__(self, opener, indexfile, revlog2, linkmapper):
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37 # How it works:
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38 # To retrieve a revision, we just need to know the node id so we can
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39 # look it up in revlog2.
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40 #
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41 # To differentiate a rev in the second revlog from a rev in the revlog,
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42 # we check revision against repotiprev.
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43 opener = vfsmod.readonlyvfs(opener)
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44 target = getattr(revlog2, 'target', None)
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45 if target is None:
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46 # a revlog wrapper, eg: the manifestlog that is not an actual revlog
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47 target = revlog2._revlog.target
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48 revlog.revlog.__init__(self, opener, target=target, indexfile=indexfile)
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49 self.revlog2 = revlog2
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50
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51 n = len(self)
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52 self.repotiprev = n - 1
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53 self.bundlerevs = set() # used by 'bundle()' revset expression
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54 for rev2 in self.revlog2:
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55 rev = self.revlog2.index[rev2]
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56 # rev numbers - in revlog2, very different from self.rev
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57 (
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58 _start,
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59 _csize,
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60 rsize,
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61 base,
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62 linkrev,
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63 p1rev,
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64 p2rev,
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65 node,
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66 _sdo,
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67 _sds,
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68 ) = rev
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69 flags = _start & 0xFFFF
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70
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71 if linkmapper is None: # link is to same revlog
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72 assert linkrev == rev2 # we never link back
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73 link = n
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74 else: # rev must be mapped from repo2 cl to unified cl by linkmapper
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75 link = linkmapper(linkrev)
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76
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77 if linkmapper is not None: # link is to same revlog
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78 base = linkmapper(base)
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79
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80 this_rev = self.index.get_rev(node)
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81 if this_rev is not None:
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82 # this happens for the common revlog revisions
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83 self.bundlerevs.add(this_rev)
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84 continue
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85
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86 p1node = self.revlog2.node(p1rev)
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87 p2node = self.revlog2.node(p2rev)
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88
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89 # TODO: it's probably wrong to set compressed length to -1, but
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90 # I have no idea if csize is valid in the base revlog context.
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91 e = (
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92 flags,
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93 -1,
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94 rsize,
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95 base,
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96 link,
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97 self.rev(p1node),
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98 self.rev(p2node),
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99 node,
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100 0, # sidedata offset
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101 0, # sidedata size
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102 )
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103 self.index.append(e)
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104 self.bundlerevs.add(n)
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105 n += 1
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106
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107 def _chunk(self, rev):
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108 if rev <= self.repotiprev:
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109 return revlog.revlog._chunk(self, rev)
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110 return self.revlog2._chunk(self.node(rev))
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111
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112 def revdiff(self, rev1, rev2):
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113 """return or calculate a delta between two revisions"""
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114 if rev1 > self.repotiprev and rev2 > self.repotiprev:
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115 return self.revlog2.revdiff(
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116 self.revlog2.rev(self.node(rev1)),
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117 self.revlog2.rev(self.node(rev2)),
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118 )
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119 elif rev1 <= self.repotiprev and rev2 <= self.repotiprev:
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120 return super(unionrevlog, self).revdiff(rev1, rev2)
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121
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122 return mdiff.textdiff(self.rawdata(rev1), self.rawdata(rev2))
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123
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124 def _revisiondata(self, nodeorrev, _df=None, raw=False):
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125 if isinstance(nodeorrev, int):
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126 rev = nodeorrev
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127 node = self.node(rev)
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128 else:
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diff changeset
129 node = nodeorrev
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diff changeset
130 rev = self.rev(node)
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parents:
diff changeset
131
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diff changeset
132 if rev > self.repotiprev:
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diff changeset
133 # work around manifestrevlog NOT being a revlog
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diff changeset
134 revlog2 = getattr(self.revlog2, '_revlog', self.revlog2)
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diff changeset
135 func = revlog2._revisiondata
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136 else:
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diff changeset
137 func = super(unionrevlog, self)._revisiondata
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diff changeset
138 return func(node, _df=_df, raw=raw)
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139
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diff changeset
140 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None):
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141 raise NotImplementedError
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142
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diff changeset
143 def addgroup(
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diff changeset
144 self,
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145 deltas,
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146 linkmapper,
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diff changeset
147 transaction,
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Joerg Sonnenberger <joerg@bec.de>
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148 alwayscache=False,
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diff changeset
149 addrevisioncb=None,
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150 duplicaterevisioncb=None,
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151 maybemissingparents=False,
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diff changeset
152 ):
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153 raise NotImplementedError
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154
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155 def strip(self, minlink, transaction):
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156 raise NotImplementedError
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157
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158 def checksize(self):
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159 raise NotImplementedError
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160
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161
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162 class unionchangelog(unionrevlog, changelog.changelog):
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163 def __init__(self, opener, opener2):
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164 changelog.changelog.__init__(self, opener)
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165 linkmapper = None
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166 changelog2 = changelog.changelog(opener2)
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167 unionrevlog.__init__(
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parents: 47161
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168 self, opener, self._indexfile, changelog2, linkmapper
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169 )
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170
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171
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Durham Goode <durham@fb.com>
parents: 30218
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172 class unionmanifest(unionrevlog, manifest.manifestrevlog):
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173 def __init__(self, nodeconstants, opener, opener2, linkmapper):
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174 manifest.manifestrevlog.__init__(self, nodeconstants, opener)
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175 manifest2 = manifest.manifestrevlog(nodeconstants, opener2)
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176 unionrevlog.__init__(
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177 self, opener, self._revlog._indexfile, manifest2, linkmapper
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178 )
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179
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180
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parents: 34226
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181 class unionfilelog(filelog.filelog):
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182 def __init__(self, opener, path, opener2, linkmapper, repo):
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183 filelog.filelog.__init__(self, opener, path)
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184 filelog2 = filelog.filelog(opener2, path)
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185 self._revlog = unionrevlog(
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186 opener, self._revlog._indexfile, filelog2._revlog, linkmapper
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187 )
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188 self._repo = repo
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189 self.repotiprev = self._revlog.repotiprev
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190 self.revlog2 = self._revlog.revlog2
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191
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parents: 24003
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192 def iscensored(self, rev):
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193 """Check if a revision is censored."""
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parents: 24003
diff changeset
194 if rev <= self.repotiprev:
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parents: 24003
diff changeset
195 return filelog.filelog.iscensored(self, rev)
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Sean Farley <sean@farley.io>
parents: 26587
diff changeset
196 node = self.node(rev)
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Sean Farley <sean@farley.io>
parents: 26587
diff changeset
197 return self.revlog2.iscensored(self.revlog2.rev(node))
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parents: 24003
diff changeset
198
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199
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200 class unionpeer(localrepo.localpeer):
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parents:
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201 def canpush(self):
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parents:
diff changeset
202 return False
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203
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204
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diff changeset
205 class unionrepository(object):
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206 """Represents the union of data in 2 repositories.
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207
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diff changeset
208 Instances are not usable if constructed directly. Use ``instance()``
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diff changeset
209 or ``makeunionrepository()`` to create a usable instance.
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diff changeset
210 """
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211
39621
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212 def __init__(self, repo2, url):
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213 self.repo2 = repo2
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diff changeset
214 self._url = url
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215
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diff changeset
216 self.ui.setconfig(b'phases', b'publish', False, b'unionrepo')
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217
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parents:
diff changeset
218 @localrepo.unfilteredpropertycache
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parents:
diff changeset
219 def changelog(self):
23878
37a92908a382 localrepo: remove all external users of localrepo.sopener
Angel Ezquerra <angel.ezquerra@gmail.com>
parents: 20790
diff changeset
220 return unionchangelog(self.svfs, self.repo2.svfs)
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parents:
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221
39779
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39621
diff changeset
222 @localrepo.unfilteredpropertycache
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diff changeset
223 def manifestlog(self):
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diff changeset
224 rootstore = unionmanifest(
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diff changeset
225 self.nodeconstants,
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Joerg Sonnenberger <joerg@bec.de>
parents: 46445
diff changeset
226 self.svfs,
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Joerg Sonnenberger <joerg@bec.de>
parents: 46445
diff changeset
227 self.repo2.svfs,
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Joerg Sonnenberger <joerg@bec.de>
parents: 46445
diff changeset
228 self.unfiltered()._clrev,
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229 )
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diff changeset
230 return manifest.manifestlog(
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parents: 42839
diff changeset
231 self.svfs, self, rootstore, self.narrowmatch()
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parents: 42839
diff changeset
232 )
39779
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39621
diff changeset
233
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parents:
diff changeset
234 def _clrev(self, rev2):
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parents:
diff changeset
235 """map from repo2 changelog rev to temporary rev in self.changelog"""
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parents:
diff changeset
236 node = self.repo2.changelog.node(rev2)
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parents:
diff changeset
237 return self.changelog.rev(node)
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parents:
diff changeset
238
a9c443b3b240 unionrepo: read-only operations on a union of two localrepos
Mads Kiilerich <madski@unity3d.com>
parents:
diff changeset
239 def url(self):
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parents:
diff changeset
240 return self._url
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parents:
diff changeset
241
a9c443b3b240 unionrepo: read-only operations on a union of two localrepos
Mads Kiilerich <madski@unity3d.com>
parents:
diff changeset
242 def file(self, f):
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diff changeset
243 return unionfilelog(
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parents: 42839
diff changeset
244 self.svfs, f, self.repo2.svfs, self.unfiltered()._clrev, self
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Augie Fackler <augie@google.com>
parents: 42839
diff changeset
245 )
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parents:
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246
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parents:
diff changeset
247 def close(self):
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parents:
diff changeset
248 self.repo2.close()
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249
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parents:
diff changeset
250 def cancopy(self):
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parents:
diff changeset
251 return False
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252
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diff changeset
253 def peer(self):
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parents:
diff changeset
254 return unionpeer(self)
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diff changeset
255
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parents:
diff changeset
256 def getcwd(self):
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diff changeset
257 return encoding.getcwd() # always outside the repo
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diff changeset
258
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259
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parents: 38889
diff changeset
260 def instance(ui, path, create, intents=None, createopts=None):
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parents:
diff changeset
261 if create:
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diff changeset
262 raise error.Abort(_(b'cannot create new union repository'))
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parents: 43076
diff changeset
263 parentpath = ui.config(b"bundle", b"mainreporoot")
18944
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parents:
diff changeset
264 if not parentpath:
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265 # try to find the correct path to the working directory repo
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266 parentpath = cmdutil.findrepo(encoding.getcwd())
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267 if parentpath is None:
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268 parentpath = b''
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269 if parentpath:
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270 # Try to make the full path relative so we get a nice, short URL.
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271 # In particular, we don't want temp dir names in test outputs.
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272 cwd = encoding.getcwd()
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273 if parentpath == cwd:
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274 parentpath = b''
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275 else:
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276 cwd = pathutil.normasprefix(cwd)
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277 if parentpath.startswith(cwd):
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278 parentpath = parentpath[len(cwd) :]
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279 if path.startswith(b'union:'):
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280 s = path.split(b":", 1)[1].split(b"+", 1)
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281 if len(s) == 1:
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282 repopath, repopath2 = parentpath, s[0]
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283 else:
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284 repopath, repopath2 = s
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285 else:
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286 repopath, repopath2 = parentpath, path
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287
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288 return makeunionrepository(ui, repopath, repopath2)
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289
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290
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291 def makeunionrepository(ui, repopath1, repopath2):
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292 """Make a union repository object from 2 local repo paths."""
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293 repo1 = localrepo.instance(ui, repopath1, create=False)
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294 repo2 = localrepo.instance(ui, repopath2, create=False)
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295
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296 url = b'union:%s+%s' % (
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297 util.expandpath(repopath1),
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298 util.expandpath(repopath2),
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299 )
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300
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301 class derivedunionrepository(unionrepository, repo1.__class__):
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302 pass
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303
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304 repo = repo1
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305 repo.__class__ = derivedunionrepository
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306 unionrepository.__init__(repo1, repo2, url)
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307
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308 return repo