Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/unionrepo.py @ 50952:18c8c18993f0

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pycompat: drop usage of hasattr/getattr/setattr/delatt proxy The function remains to ease extensions transition, but we no longer use them in core.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Fri, 01 Sep 2023 00:09:55 +0200
parents 3a2df812e1c7
children 93a44c1ba0c6
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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
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15 from .i18n import _
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16
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17 from . import (
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18 changelog,
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19 cmdutil,
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20 encoding,
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21 error,
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22 filelog,
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23 localrepo,
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24 manifest,
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25 mdiff,
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26 pathutil,
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27 revlog,
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28 util,
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29 vfs as vfsmod,
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30 )
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31
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32 from .revlogutils import (
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33 constants as revlog_constants,
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34 )
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35
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36
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37 class unionrevlog(revlog.revlog):
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38 def __init__(self, opener, radix, revlog2, linkmapper):
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39 # How it works:
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40 # To retrieve a revision, we just need to know the node id so we can
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41 # look it up in revlog2.
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42 #
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43 # To differentiate a rev in the second revlog from a rev in the revlog,
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44 # we check revision against repotiprev.
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45 opener = vfsmod.readonlyvfs(opener)
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46 target = getattr(revlog2, 'target', None)
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47 if target is None:
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48 # a revlog wrapper, eg: the manifestlog that is not an actual revlog
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49 target = revlog2._revlog.target
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50 revlog.revlog.__init__(self, opener, target=target, radix=radix)
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51 self.revlog2 = revlog2
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52
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53 n = len(self)
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54 self.repotiprev = n - 1
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55 self.bundlerevs = set() # used by 'bundle()' revset expression
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56 for rev2 in self.revlog2:
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57 rev = self.revlog2.index[rev2]
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58 # rev numbers - in revlog2, very different from self.rev
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59 (
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60 _start,
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61 _csize,
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62 rsize,
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63 base,
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64 linkrev,
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65 p1rev,
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66 p2rev,
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67 node,
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68 _sdo,
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69 _sds,
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70 _dcm,
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71 _sdcm,
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72 rank,
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73 ) = rev
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74 flags = _start & 0xFFFF
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75
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76 if linkmapper is None: # link is to same revlog
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77 assert linkrev == rev2 # we never link back
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78 link = n
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79 else: # rev must be mapped from repo2 cl to unified cl by linkmapper
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80 link = linkmapper(linkrev)
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81
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82 if linkmapper is not None: # link is to same revlog
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83 base = linkmapper(base)
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84
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85 this_rev = self.index.get_rev(node)
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86 if this_rev is not None:
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87 # this happens for the common revlog revisions
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88 self.bundlerevs.add(this_rev)
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89 continue
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90
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91 p1node = self.revlog2.node(p1rev)
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92 p2node = self.revlog2.node(p2rev)
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93
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94 # TODO: it's probably wrong to set compressed length to -1, but
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95 # I have no idea if csize is valid in the base revlog context.
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96 e = (
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97 flags,
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98 -1,
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99 rsize,
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100 base,
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101 link,
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102 self.rev(p1node),
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103 self.rev(p2node),
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104 node,
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105 0, # sidedata offset
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106 0, # sidedata size
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107 revlog_constants.COMP_MODE_INLINE,
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108 revlog_constants.COMP_MODE_INLINE,
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109 rank,
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110 )
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111 self.index.append(e)
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112 self.bundlerevs.add(n)
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113 n += 1
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114
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115 def _chunk(self, rev, df=None):
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116 if rev <= self.repotiprev:
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117 return revlog.revlog._chunk(self, rev)
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118 return self.revlog2._chunk(self.node(rev))
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119
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120 def revdiff(self, rev1, rev2):
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121 """return or calculate a delta between two revisions"""
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122 if rev1 > self.repotiprev and rev2 > self.repotiprev:
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123 return self.revlog2.revdiff(
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124 self.revlog2.rev(self.node(rev1)),
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125 self.revlog2.rev(self.node(rev2)),
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126 )
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127 elif rev1 <= self.repotiprev and rev2 <= self.repotiprev:
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128 return super(unionrevlog, self).revdiff(rev1, rev2)
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129
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diff changeset
130 return mdiff.textdiff(self.rawdata(rev1), self.rawdata(rev2))
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131
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132 def _revisiondata(self, nodeorrev, _df=None, raw=False):
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133 if isinstance(nodeorrev, int):
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134 rev = nodeorrev
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135 node = self.node(rev)
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parents:
diff changeset
136 else:
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diff changeset
137 node = nodeorrev
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diff changeset
138 rev = self.rev(node)
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139
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diff changeset
140 if rev > self.repotiprev:
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diff changeset
141 # work around manifestrevlog NOT being a revlog
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diff changeset
142 revlog2 = getattr(self.revlog2, '_revlog', self.revlog2)
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parents: 42743
diff changeset
143 func = revlog2._revisiondata
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144 else:
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diff changeset
145 func = super(unionrevlog, self)._revisiondata
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diff changeset
146 return func(node, _df=_df, raw=raw)
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147
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148 def addrevision(
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149 self,
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150 text,
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151 transaction,
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Matt Harbison <matt_harbison@yahoo.com>
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152 link,
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Matt Harbison <matt_harbison@yahoo.com>
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diff changeset
153 p1,
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154 p2,
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155 cachedelta=None,
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156 node=None,
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157 flags=revlog.REVIDX_DEFAULT_FLAGS,
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158 deltacomputer=None,
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159 sidedata=None,
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diff changeset
160 ):
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161 raise NotImplementedError
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162
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diff changeset
163 def addgroup(
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164 self,
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165 deltas,
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Augie Fackler <augie@google.com>
parents: 42839
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166 linkmapper,
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Augie Fackler <augie@google.com>
parents: 42839
diff changeset
167 transaction,
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Joerg Sonnenberger <joerg@bec.de>
parents: 45834
diff changeset
168 alwayscache=False,
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diff changeset
169 addrevisioncb=None,
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parents: 43613
diff changeset
170 duplicaterevisioncb=None,
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171 debug_info=None,
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172 delta_base_reuse_policy=None,
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173 ):
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174 raise NotImplementedError
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175
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parents: 41041
diff changeset
176 def strip(self, minlink, transaction):
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177 raise NotImplementedError
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178
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179 def checksize(self):
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180 raise NotImplementedError
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181
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182
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diff changeset
183 class unionchangelog(unionrevlog, changelog.changelog):
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184 def __init__(self, opener, opener2):
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diff changeset
185 changelog.changelog.__init__(self, opener)
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186 linkmapper = None
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diff changeset
187 changelog2 = changelog.changelog(opener2)
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parents: 47162
diff changeset
188 unionrevlog.__init__(self, opener, self.radix, changelog2, linkmapper)
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diff changeset
189
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diff changeset
190
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Durham Goode <durham@fb.com>
parents: 30218
diff changeset
191 class unionmanifest(unionrevlog, manifest.manifestrevlog):
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192 def __init__(self, nodeconstants, opener, opener2, linkmapper):
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193 manifest.manifestrevlog.__init__(self, nodeconstants, opener)
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194 manifest2 = manifest.manifestrevlog(nodeconstants, opener2)
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195 unionrevlog.__init__(
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parents: 47162
diff changeset
196 self, opener, self._revlog.radix, manifest2, linkmapper
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197 )
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198
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199
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parents: 34226
diff changeset
200 class unionfilelog(filelog.filelog):
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201 def __init__(self, opener, path, opener2, linkmapper, repo):
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202 filelog.filelog.__init__(self, opener, path)
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203 filelog2 = filelog.filelog(opener2, path)
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diff changeset
204 self._revlog = unionrevlog(
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parents: 47162
diff changeset
205 opener, self._revlog.radix, filelog2._revlog, linkmapper
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206 )
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diff changeset
207 self._repo = repo
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parents: 34226
diff changeset
208 self.repotiprev = self._revlog.repotiprev
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parents: 34226
diff changeset
209 self.revlog2 = self._revlog.revlog2
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diff changeset
210
24118
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Mike Edgar <adgar@google.com>
parents: 24003
diff changeset
211 def iscensored(self, rev):
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Mike Edgar <adgar@google.com>
parents: 24003
diff changeset
212 """Check if a revision is censored."""
76f6ae06ddf5 revlog: add "iscensored()" to revlog public API
Mike Edgar <adgar@google.com>
parents: 24003
diff changeset
213 if rev <= self.repotiprev:
76f6ae06ddf5 revlog: add "iscensored()" to revlog public API
Mike Edgar <adgar@google.com>
parents: 24003
diff changeset
214 return filelog.filelog.iscensored(self, rev)
27723
bf86e3e87123 unionrepo: fix wrong rev being checked in iscensored (issue5024)
Sean Farley <sean@farley.io>
parents: 26587
diff changeset
215 node = self.node(rev)
bf86e3e87123 unionrepo: fix wrong rev being checked in iscensored (issue5024)
Sean Farley <sean@farley.io>
parents: 26587
diff changeset
216 return self.revlog2.iscensored(self.revlog2.rev(node))
24118
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Mike Edgar <adgar@google.com>
parents: 24003
diff changeset
217
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218
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diff changeset
219 class unionpeer(localrepo.localpeer):
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diff changeset
220 def canpush(self):
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diff changeset
221 return False
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parents:
diff changeset
222
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diff changeset
223
49037
642e31cb55f0 py3: use class X: instead of class X(object):
Gregory Szorc <gregory.szorc@gmail.com>
parents: 48966
diff changeset
224 class unionrepository:
39621
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parents: 39565
diff changeset
225 """Represents the union of data in 2 repositories.
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226
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diff changeset
227 Instances are not usable if constructed directly. Use ``instance()``
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diff changeset
228 or ``makeunionrepository()`` to create a usable instance.
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diff changeset
229 """
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230
39621
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231 def __init__(self, repo2, url):
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232 self.repo2 = repo2
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diff changeset
233 self._url = url
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diff changeset
234
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diff changeset
235 self.ui.setconfig(b'phases', b'publish', False, b'unionrepo')
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236
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parents:
diff changeset
237 @localrepo.unfilteredpropertycache
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parents:
diff changeset
238 def changelog(self):
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Angel Ezquerra <angel.ezquerra@gmail.com>
parents: 20790
diff changeset
239 return unionchangelog(self.svfs, self.repo2.svfs)
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240
39779
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parents: 39621
diff changeset
241 @localrepo.unfilteredpropertycache
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diff changeset
242 def manifestlog(self):
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diff changeset
243 rootstore = unionmanifest(
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diff changeset
244 self.nodeconstants,
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parents: 46445
diff changeset
245 self.svfs,
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parents: 46445
diff changeset
246 self.repo2.svfs,
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parents: 46445
diff changeset
247 self.unfiltered()._clrev,
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248 )
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diff changeset
249 return manifest.manifestlog(
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diff changeset
250 self.svfs, self, rootstore, self.narrowmatch()
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251 )
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diff changeset
252
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diff changeset
253 def _clrev(self, rev2):
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parents:
diff changeset
254 """map from repo2 changelog rev to temporary rev in self.changelog"""
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parents:
diff changeset
255 node = self.repo2.changelog.node(rev2)
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parents:
diff changeset
256 return self.changelog.rev(node)
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parents:
diff changeset
257
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parents:
diff changeset
258 def url(self):
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parents:
diff changeset
259 return self._url
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parents:
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260
a9c443b3b240 unionrepo: read-only operations on a union of two localrepos
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parents:
diff changeset
261 def file(self, f):
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262 return unionfilelog(
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263 self.svfs, f, self.repo2.svfs, self.unfiltered()._clrev, self
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264 )
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265
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266 def close(self):
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267 self.repo2.close()
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268
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269 def cancopy(self):
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270 return False
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271
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272 def peer(self, path=None, remotehidden=False):
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273 return unionpeer(self, path=None, remotehidden=remotehidden)
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274
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275 def getcwd(self):
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276 return encoding.getcwd() # always outside the repo
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277
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278
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279 def instance(ui, path, create, intents=None, createopts=None):
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280 if create:
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281 raise error.Abort(_(b'cannot create new union repository'))
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282 parentpath = ui.config(b"bundle", b"mainreporoot")
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283 if not parentpath:
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284 # try to find the correct path to the working directory repo
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285 parentpath = cmdutil.findrepo(encoding.getcwd())
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286 if parentpath is None:
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287 parentpath = b''
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288 if parentpath:
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289 # Try to make the full path relative so we get a nice, short URL.
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290 # In particular, we don't want temp dir names in test outputs.
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291 cwd = encoding.getcwd()
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292 if parentpath == cwd:
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293 parentpath = b''
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294 else:
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295 cwd = pathutil.normasprefix(cwd)
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296 if parentpath.startswith(cwd):
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297 parentpath = parentpath[len(cwd) :]
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298 if path.startswith(b'union:'):
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299 s = path.split(b":", 1)[1].split(b"+", 1)
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300 if len(s) == 1:
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301 repopath, repopath2 = parentpath, s[0]
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302 else:
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303 repopath, repopath2 = s
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304 else:
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305 repopath, repopath2 = parentpath, path
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306
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307 return makeunionrepository(ui, repopath, repopath2)
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308
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309
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310 def makeunionrepository(ui, repopath1, repopath2):
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311 """Make a union repository object from 2 local repo paths."""
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312 repo1 = localrepo.instance(ui, repopath1, create=False)
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313 repo2 = localrepo.instance(ui, repopath2, create=False)
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314
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315 url = b'union:%s+%s' % (
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316 util.expandpath(repopath1),
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317 util.expandpath(repopath2),
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318 )
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319
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320 class derivedunionrepository(unionrepository, repo1.__class__):
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321 pass
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322
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323 repo = repo1
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324 repo.__class__ = derivedunionrepository
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325 unionrepository.__init__(repo1, repo2, url)
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326
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327 return repo