Mercurial > hg
annotate mercurial/unionrepo.py @ 22806:65ccc733d58e
getlogrevs: remove user of baseset.append
A `baseset` has multiple cached results and will get even more in the future.
Making it an object "populated once" like the other smartsets makes it both safer
and simpler. The append method will be removed at some point.
author | Pierre-Yves David <pierre-yves.david@fb.com> |
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date | Tue, 07 Oct 2014 00:04:16 -0700 |
parents | 49f2d5644f04 |
children | 37a92908a382 |
rev | line source |
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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 node import nullid |
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15 from i18n import _ |
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16 import os |
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17 import util, mdiff, cmdutil, scmutil |
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18 import localrepo, changelog, manifest, filelog, revlog |
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19 |
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20 class unionrevlog(revlog.revlog): |
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21 def __init__(self, opener, indexfile, revlog2, linkmapper): |
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22 # How it works: |
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23 # To retrieve a revision, we just need to know the node id so we can |
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24 # look it up in revlog2. |
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25 # |
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26 # To differentiate a rev in the second revlog from a rev in the revlog, |
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27 # we check revision against repotiprev. |
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28 opener = scmutil.readonlyvfs(opener) |
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29 revlog.revlog.__init__(self, opener, indexfile) |
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30 self.revlog2 = revlog2 |
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31 |
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32 n = len(self) |
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33 self.repotiprev = n - 1 |
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34 self.bundlerevs = set() # used by 'bundle()' revset expression |
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35 for rev2 in self.revlog2: |
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36 rev = self.revlog2.index[rev2] |
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37 # rev numbers - in revlog2, very different from self.rev |
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38 _start, _csize, _rsize, _base, linkrev, p1rev, p2rev, node = rev |
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39 |
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40 if linkmapper is None: # link is to same revlog |
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41 assert linkrev == rev2 # we never link back |
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42 link = n |
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43 else: # rev must be mapped from repo2 cl to unified cl by linkmapper |
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44 link = linkmapper(linkrev) |
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45 |
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46 if node in self.nodemap: |
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47 # this happens for the common revlog revisions |
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48 self.bundlerevs.add(self.nodemap[node]) |
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49 continue |
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50 |
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51 p1node = self.revlog2.node(p1rev) |
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52 p2node = self.revlog2.node(p2rev) |
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53 |
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54 e = (None, None, None, None, |
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55 link, self.rev(p1node), self.rev(p2node), node) |
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56 self.index.insert(-1, e) |
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57 self.nodemap[node] = n |
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58 self.bundlerevs.add(n) |
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59 n += 1 |
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60 |
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61 def _chunk(self, rev): |
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62 if rev <= self.repotiprev: |
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63 return revlog.revlog._chunk(self, rev) |
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64 return self.revlog2._chunk(self.node(rev)) |
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65 |
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66 def revdiff(self, rev1, rev2): |
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67 """return or calculate a delta between two revisions""" |
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68 if rev1 > self.repotiprev and rev2 > self.repotiprev: |
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69 return self.revlog2.revdiff( |
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70 self.revlog2.rev(self.node(rev1)), |
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71 self.revlog2.rev(self.node(rev2))) |
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72 elif rev1 <= self.repotiprev and rev2 <= self.repotiprev: |
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73 return self.baserevdiff(rev1, rev2) |
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74 |
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75 return mdiff.textdiff(self.revision(self.node(rev1)), |
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76 self.revision(self.node(rev2))) |
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77 |
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78 def revision(self, nodeorrev): |
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79 """return an uncompressed revision of a given node or revision |
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80 number. |
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81 """ |
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82 if isinstance(nodeorrev, int): |
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83 rev = nodeorrev |
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84 node = self.node(rev) |
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85 else: |
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86 node = nodeorrev |
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87 rev = self.rev(node) |
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88 |
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89 if node == nullid: |
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90 return "" |
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91 |
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92 if rev > self.repotiprev: |
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93 text = self.revlog2.revision(node) |
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94 self._cache = (node, rev, text) |
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95 else: |
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96 text = self.baserevision(rev) |
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97 # already cached |
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98 return text |
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99 |
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100 def baserevision(self, nodeorrev): |
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101 # Revlog subclasses may override 'revision' method to modify format of |
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102 # content retrieved from revlog. To use unionrevlog with such class one |
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103 # needs to override 'baserevision' and make more specific call here. |
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104 return revlog.revlog.revision(self, nodeorrev) |
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105 |
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106 def baserevdiff(self, rev1, rev2): |
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107 # Exists for the same purpose as baserevision. |
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108 return revlog.revlog.revdiff(self, rev1, rev2) |
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109 |
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110 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
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111 raise NotImplementedError |
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112 def addgroup(self, revs, linkmapper, transaction): |
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113 raise NotImplementedError |
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114 def strip(self, rev, minlink): |
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115 raise NotImplementedError |
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116 def checksize(self): |
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117 raise NotImplementedError |
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118 |
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119 class unionchangelog(unionrevlog, changelog.changelog): |
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120 def __init__(self, opener, opener2): |
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121 changelog.changelog.__init__(self, opener) |
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122 linkmapper = None |
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123 changelog2 = changelog.changelog(opener2) |
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124 unionrevlog.__init__(self, opener, self.indexfile, changelog2, |
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125 linkmapper) |
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126 |
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127 def baserevision(self, nodeorrev): |
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128 # Although changelog doesn't override 'revision' method, some extensions |
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129 # may replace this class with another that does. Same story with |
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130 # manifest and filelog classes. |
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131 return changelog.changelog.revision(self, nodeorrev) |
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132 |
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133 def baserevdiff(self, rev1, rev2): |
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134 return changelog.changelog.revdiff(self, rev1, rev2) |
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135 |
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136 class unionmanifest(unionrevlog, manifest.manifest): |
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137 def __init__(self, opener, opener2, linkmapper): |
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138 manifest.manifest.__init__(self, opener) |
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139 manifest2 = manifest.manifest(opener2) |
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140 unionrevlog.__init__(self, opener, self.indexfile, manifest2, |
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141 linkmapper) |
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142 |
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143 def baserevision(self, nodeorrev): |
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144 return manifest.manifest.revision(self, nodeorrev) |
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145 |
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146 def baserevdiff(self, rev1, rev2): |
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147 return manifest.manifest.revdiff(self, rev1, rev2) |
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148 |
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149 class unionfilelog(unionrevlog, filelog.filelog): |
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150 def __init__(self, opener, path, opener2, linkmapper, repo): |
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151 filelog.filelog.__init__(self, opener, path) |
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152 filelog2 = filelog.filelog(opener2, path) |
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153 unionrevlog.__init__(self, opener, self.indexfile, filelog2, |
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154 linkmapper) |
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155 self._repo = repo |
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156 |
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157 def baserevision(self, nodeorrev): |
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158 return filelog.filelog.revision(self, nodeorrev) |
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159 |
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160 def baserevdiff(self, rev1, rev2): |
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161 return filelog.filelog.revdiff(self, rev1, rev2) |
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162 |
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163 def _file(self, f): |
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164 self._repo.file(f) |
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165 |
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166 class unionpeer(localrepo.localpeer): |
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167 def canpush(self): |
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168 return False |
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169 |
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170 class unionrepository(localrepo.localrepository): |
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171 def __init__(self, ui, path, path2): |
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172 localrepo.localrepository.__init__(self, ui, path) |
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173 self.ui.setconfig('phases', 'publish', False, 'unionrepo') |
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174 |
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175 self._url = 'union:%s+%s' % (util.expandpath(path), |
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176 util.expandpath(path2)) |
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177 self.repo2 = localrepo.localrepository(ui, path2) |
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178 |
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179 @localrepo.unfilteredpropertycache |
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180 def changelog(self): |
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181 return unionchangelog(self.sopener, self.repo2.sopener) |
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182 |
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183 def _clrev(self, rev2): |
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184 """map from repo2 changelog rev to temporary rev in self.changelog""" |
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185 node = self.repo2.changelog.node(rev2) |
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186 return self.changelog.rev(node) |
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187 |
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188 @localrepo.unfilteredpropertycache |
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189 def manifest(self): |
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190 return unionmanifest(self.sopener, self.repo2.sopener, |
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191 self._clrev) |
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192 |
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193 def url(self): |
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194 return self._url |
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195 |
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196 def file(self, f): |
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197 return unionfilelog(self.sopener, f, self.repo2.sopener, |
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198 self._clrev, self) |
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199 |
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200 def close(self): |
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201 self.repo2.close() |
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202 |
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203 def cancopy(self): |
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204 return False |
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205 |
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206 def peer(self): |
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207 return unionpeer(self) |
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208 |
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209 def getcwd(self): |
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210 return os.getcwd() # always outside the repo |
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211 |
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212 def instance(ui, path, create): |
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213 if create: |
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214 raise util.Abort(_('cannot create new union repository')) |
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215 parentpath = ui.config("bundle", "mainreporoot", "") |
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216 if not parentpath: |
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217 # try to find the correct path to the working directory repo |
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218 parentpath = cmdutil.findrepo(os.getcwd()) |
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219 if parentpath is None: |
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220 parentpath = '' |
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221 if parentpath: |
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222 # Try to make the full path relative so we get a nice, short URL. |
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223 # In particular, we don't want temp dir names in test outputs. |
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224 cwd = os.getcwd() |
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225 if parentpath == cwd: |
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226 parentpath = '' |
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227 else: |
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228 cwd = os.path.join(cwd,'') |
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229 if parentpath.startswith(cwd): |
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230 parentpath = parentpath[len(cwd):] |
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231 if path.startswith('union:'): |
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232 s = path.split(":", 1)[1].split("+", 1) |
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233 if len(s) == 1: |
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234 repopath, repopath2 = parentpath, s[0] |
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235 else: |
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236 repopath, repopath2 = s |
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237 else: |
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238 repopath, repopath2 = parentpath, path |
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239 return unionrepository(ui, repopath, repopath2) |