Mercurial > hg
annotate mercurial/unionrepo.py @ 40629:ab59cc71f80c
tests: fix bytes/str issue I introduced when adding this test
# skip-blame just b prefixes for py3
Differential Revision: https://phab.mercurial-scm.org/D5271
author | Augie Fackler <augie@google.com> |
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date | Wed, 14 Nov 2018 10:15:28 -0500 |
parents | 55db747a21ad |
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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 __future__ import absolute_import |
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15 |
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16 from .i18n import _ |
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17 from .node import nullid |
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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 class unionrevlog(revlog.revlog): |
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35 def __init__(self, opener, indexfile, revlog2, linkmapper): |
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36 # How it works: |
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37 # To retrieve a revision, we just need to know the node id so we can |
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38 # look it up in revlog2. |
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39 # |
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40 # To differentiate a rev in the second revlog from a rev in the revlog, |
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41 # we check revision against repotiprev. |
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42 opener = vfsmod.readonlyvfs(opener) |
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43 revlog.revlog.__init__(self, opener, indexfile) |
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44 self.revlog2 = revlog2 |
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45 |
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46 n = len(self) |
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47 self.repotiprev = n - 1 |
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48 self.bundlerevs = set() # used by 'bundle()' revset expression |
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49 for rev2 in self.revlog2: |
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50 rev = self.revlog2.index[rev2] |
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51 # rev numbers - in revlog2, very different from self.rev |
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52 _start, _csize, rsize, base, linkrev, p1rev, p2rev, node = rev |
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53 flags = _start & 0xFFFF |
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54 |
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55 if linkmapper is None: # link is to same revlog |
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56 assert linkrev == rev2 # we never link back |
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57 link = n |
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58 else: # rev must be mapped from repo2 cl to unified cl by linkmapper |
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59 link = linkmapper(linkrev) |
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60 |
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61 if linkmapper is not None: # link is to same revlog |
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62 base = linkmapper(base) |
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63 |
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64 if node in self.nodemap: |
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65 # this happens for the common revlog revisions |
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66 self.bundlerevs.add(self.nodemap[node]) |
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67 continue |
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68 |
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69 p1node = self.revlog2.node(p1rev) |
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70 p2node = self.revlog2.node(p2rev) |
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71 |
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72 # TODO: it's probably wrong to set compressed length to None, but |
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73 # I have no idea if csize is valid in the base revlog context. |
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74 e = (flags, None, rsize, base, |
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75 link, self.rev(p1node), self.rev(p2node), node) |
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76 self.index.append(e) |
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77 self.nodemap[node] = n |
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78 self.bundlerevs.add(n) |
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79 n += 1 |
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80 |
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81 def _chunk(self, rev): |
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82 if rev <= self.repotiprev: |
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83 return revlog.revlog._chunk(self, rev) |
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84 return self.revlog2._chunk(self.node(rev)) |
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85 |
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86 def revdiff(self, rev1, rev2): |
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87 """return or calculate a delta between two revisions""" |
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88 if rev1 > self.repotiprev and rev2 > self.repotiprev: |
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89 return self.revlog2.revdiff( |
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90 self.revlog2.rev(self.node(rev1)), |
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91 self.revlog2.rev(self.node(rev2))) |
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92 elif rev1 <= self.repotiprev and rev2 <= self.repotiprev: |
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93 return self.baserevdiff(rev1, rev2) |
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94 |
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95 return mdiff.textdiff(self.revision(rev1), self.revision(rev2)) |
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96 |
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97 def revision(self, nodeorrev, _df=None, raw=False): |
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98 """return an uncompressed revision of a given node or revision |
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99 number. |
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100 """ |
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101 if isinstance(nodeorrev, int): |
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102 rev = nodeorrev |
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103 node = self.node(rev) |
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104 else: |
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105 node = nodeorrev |
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106 rev = self.rev(node) |
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107 |
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108 if node == nullid: |
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109 return "" |
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110 |
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111 if rev > self.repotiprev: |
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112 text = self.revlog2.revision(node) |
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113 self._revisioncache = (node, rev, text) |
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114 else: |
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115 text = self.baserevision(rev) |
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116 # already cached |
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117 return text |
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118 |
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119 def baserevision(self, nodeorrev): |
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120 # Revlog subclasses may override 'revision' method to modify format of |
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121 # content retrieved from revlog. To use unionrevlog with such class one |
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122 # needs to override 'baserevision' and make more specific call here. |
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123 return revlog.revlog.revision(self, nodeorrev) |
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124 |
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125 def baserevdiff(self, rev1, rev2): |
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126 # Exists for the same purpose as baserevision. |
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127 return revlog.revlog.revdiff(self, rev1, rev2) |
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128 |
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129 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
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130 raise NotImplementedError |
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131 def addgroup(self, deltas, transaction, addrevisioncb=None): |
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132 raise NotImplementedError |
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133 def strip(self, rev, minlink): |
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134 raise NotImplementedError |
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135 def checksize(self): |
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136 raise NotImplementedError |
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137 |
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138 class unionchangelog(unionrevlog, changelog.changelog): |
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139 def __init__(self, opener, opener2): |
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140 changelog.changelog.__init__(self, opener) |
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141 linkmapper = None |
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142 changelog2 = changelog.changelog(opener2) |
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143 unionrevlog.__init__(self, opener, self.indexfile, changelog2, |
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144 linkmapper) |
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145 |
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146 def baserevision(self, nodeorrev): |
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147 # Although changelog doesn't override 'revision' method, some extensions |
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148 # may replace this class with another that does. Same story with |
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149 # manifest and filelog classes. |
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150 return changelog.changelog.revision(self, nodeorrev) |
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151 |
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152 def baserevdiff(self, rev1, rev2): |
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153 return changelog.changelog.revdiff(self, rev1, rev2) |
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154 |
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155 class unionmanifest(unionrevlog, manifest.manifestrevlog): |
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156 def __init__(self, opener, opener2, linkmapper): |
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157 manifest.manifestrevlog.__init__(self, opener) |
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158 manifest2 = manifest.manifestrevlog(opener2) |
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159 unionrevlog.__init__(self, opener, self.indexfile, manifest2, |
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160 linkmapper) |
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161 |
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162 def baserevision(self, nodeorrev): |
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163 return manifest.manifestrevlog.revision(self, nodeorrev) |
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164 |
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165 def baserevdiff(self, rev1, rev2): |
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166 return manifest.manifestrevlog.revdiff(self, rev1, rev2) |
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167 |
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168 class unionfilelog(filelog.filelog): |
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169 def __init__(self, opener, path, opener2, linkmapper, repo): |
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170 filelog.filelog.__init__(self, opener, path) |
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171 filelog2 = filelog.filelog(opener2, path) |
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172 self._revlog = unionrevlog(opener, self.indexfile, |
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173 filelog2._revlog, linkmapper) |
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174 self._repo = repo |
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175 self.repotiprev = self._revlog.repotiprev |
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176 self.revlog2 = self._revlog.revlog2 |
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177 |
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178 def baserevision(self, nodeorrev): |
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179 return filelog.filelog.revision(self, nodeorrev) |
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180 |
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181 def baserevdiff(self, rev1, rev2): |
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182 return filelog.filelog.revdiff(self, rev1, rev2) |
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183 |
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184 def iscensored(self, rev): |
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185 """Check if a revision is censored.""" |
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186 if rev <= self.repotiprev: |
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187 return filelog.filelog.iscensored(self, rev) |
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188 node = self.node(rev) |
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189 return self.revlog2.iscensored(self.revlog2.rev(node)) |
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190 |
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191 class unionpeer(localrepo.localpeer): |
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192 def canpush(self): |
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193 return False |
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194 |
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195 class unionrepository(object): |
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196 """Represents the union of data in 2 repositories. |
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197 |
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198 Instances are not usable if constructed directly. Use ``instance()`` |
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199 or ``makeunionrepository()`` to create a usable instance. |
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200 """ |
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201 def __init__(self, repo2, url): |
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202 self.repo2 = repo2 |
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203 self._url = url |
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204 |
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205 self.ui.setconfig('phases', 'publish', False, 'unionrepo') |
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206 |
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207 @localrepo.unfilteredpropertycache |
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208 def changelog(self): |
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209 return unionchangelog(self.svfs, self.repo2.svfs) |
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210 |
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211 @localrepo.unfilteredpropertycache |
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212 def manifestlog(self): |
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213 rootstore = unionmanifest(self.svfs, self.repo2.svfs, |
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214 self.unfiltered()._clrev) |
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215 return manifest.manifestlog(self.svfs, self, rootstore) |
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216 |
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217 def _clrev(self, rev2): |
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218 """map from repo2 changelog rev to temporary rev in self.changelog""" |
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219 node = self.repo2.changelog.node(rev2) |
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220 return self.changelog.rev(node) |
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221 |
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222 def url(self): |
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223 return self._url |
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224 |
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225 def file(self, f): |
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226 return unionfilelog(self.svfs, f, self.repo2.svfs, |
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227 self.unfiltered()._clrev, self) |
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228 |
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229 def close(self): |
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230 self.repo2.close() |
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231 |
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232 def cancopy(self): |
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233 return False |
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234 |
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235 def peer(self): |
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236 return unionpeer(self) |
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237 |
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238 def getcwd(self): |
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239 return encoding.getcwd() # always outside the repo |
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240 |
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241 def instance(ui, path, create, intents=None, createopts=None): |
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242 if create: |
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243 raise error.Abort(_('cannot create new union repository')) |
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244 parentpath = ui.config("bundle", "mainreporoot") |
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245 if not parentpath: |
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246 # try to find the correct path to the working directory repo |
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247 parentpath = cmdutil.findrepo(encoding.getcwd()) |
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248 if parentpath is None: |
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249 parentpath = '' |
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250 if parentpath: |
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251 # Try to make the full path relative so we get a nice, short URL. |
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252 # In particular, we don't want temp dir names in test outputs. |
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253 cwd = encoding.getcwd() |
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254 if parentpath == cwd: |
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255 parentpath = '' |
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256 else: |
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257 cwd = pathutil.normasprefix(cwd) |
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258 if parentpath.startswith(cwd): |
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259 parentpath = parentpath[len(cwd):] |
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260 if path.startswith('union:'): |
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261 s = path.split(":", 1)[1].split("+", 1) |
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262 if len(s) == 1: |
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263 repopath, repopath2 = parentpath, s[0] |
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264 else: |
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265 repopath, repopath2 = s |
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266 else: |
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267 repopath, repopath2 = parentpath, path |
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268 |
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269 return makeunionrepository(ui, repopath, repopath2) |
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270 |
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271 def makeunionrepository(ui, repopath1, repopath2): |
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272 """Make a union repository object from 2 local repo paths.""" |
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273 repo1 = localrepo.instance(ui, repopath1, create=False) |
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274 repo2 = localrepo.instance(ui, repopath2, create=False) |
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275 |
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276 url = 'union:%s+%s' % (util.expandpath(repopath1), |
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277 util.expandpath(repopath2)) |
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278 |
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279 class derivedunionrepository(unionrepository, repo1.__class__): |
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280 pass |
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281 |
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282 repo = repo1 |
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283 repo.__class__ = derivedunionrepository |
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284 unionrepository.__init__(repo1, repo2, url) |
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285 |
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286 return repo |