Mercurial > hg
annotate mercurial/unionrepo.py @ 37717:0664be4f0c1f
hg: pass command intents to repo/peer creation (API)
The previous commit introduced a mechanism to declare command intents.
This commit changes the repository and peer instantiation mechanism
so the intents are passed down to each repository and peer type so
they can do with them whatever they please.
Currently, nobody does anything with any intent.
Differential Revision: https://phab.mercurial-scm.org/D3377
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sat, 14 Apr 2018 09:57:44 -0700 |
parents | 1541e1a8e87d |
children | df5f6881cebd |
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 error, |
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23 filelog, |
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24 localrepo, |
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25 manifest, |
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26 mdiff, |
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27 pathutil, |
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28 pycompat, |
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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 e = (flags, None, None, base, |
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73 link, self.rev(p1node), self.rev(p2node), node) |
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74 self.index.insert(-1, e) |
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75 self.nodemap[node] = n |
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76 self.bundlerevs.add(n) |
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77 n += 1 |
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78 |
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79 def _chunk(self, rev): |
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80 if rev <= self.repotiprev: |
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81 return revlog.revlog._chunk(self, rev) |
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82 return self.revlog2._chunk(self.node(rev)) |
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83 |
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84 def revdiff(self, rev1, rev2): |
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85 """return or calculate a delta between two revisions""" |
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86 if rev1 > self.repotiprev and rev2 > self.repotiprev: |
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87 return self.revlog2.revdiff( |
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88 self.revlog2.rev(self.node(rev1)), |
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89 self.revlog2.rev(self.node(rev2))) |
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90 elif rev1 <= self.repotiprev and rev2 <= self.repotiprev: |
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91 return self.baserevdiff(rev1, rev2) |
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92 |
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93 return mdiff.textdiff(self.revision(rev1), self.revision(rev2)) |
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94 |
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95 def revision(self, nodeorrev, _df=None, raw=False): |
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96 """return an uncompressed revision of a given node or revision |
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97 number. |
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98 """ |
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99 if isinstance(nodeorrev, int): |
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100 rev = nodeorrev |
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101 node = self.node(rev) |
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102 else: |
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103 node = nodeorrev |
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104 rev = self.rev(node) |
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105 |
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106 if node == nullid: |
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107 return "" |
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108 |
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109 if rev > self.repotiprev: |
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110 text = self.revlog2.revision(node) |
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111 self._cache = (node, rev, text) |
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112 else: |
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113 text = self.baserevision(rev) |
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114 # already cached |
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115 return text |
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116 |
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117 def baserevision(self, nodeorrev): |
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118 # Revlog subclasses may override 'revision' method to modify format of |
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119 # content retrieved from revlog. To use unionrevlog with such class one |
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120 # needs to override 'baserevision' and make more specific call here. |
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121 return revlog.revlog.revision(self, nodeorrev) |
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122 |
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123 def baserevdiff(self, rev1, rev2): |
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124 # Exists for the same purpose as baserevision. |
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125 return revlog.revlog.revdiff(self, rev1, rev2) |
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126 |
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127 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
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128 raise NotImplementedError |
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129 def addgroup(self, deltas, transaction, addrevisioncb=None): |
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130 raise NotImplementedError |
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131 def strip(self, rev, minlink): |
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132 raise NotImplementedError |
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133 def checksize(self): |
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134 raise NotImplementedError |
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135 |
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136 class unionchangelog(unionrevlog, changelog.changelog): |
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137 def __init__(self, opener, opener2): |
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138 changelog.changelog.__init__(self, opener) |
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139 linkmapper = None |
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140 changelog2 = changelog.changelog(opener2) |
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141 unionrevlog.__init__(self, opener, self.indexfile, changelog2, |
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142 linkmapper) |
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143 |
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144 def baserevision(self, nodeorrev): |
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145 # Although changelog doesn't override 'revision' method, some extensions |
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146 # may replace this class with another that does. Same story with |
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147 # manifest and filelog classes. |
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148 return changelog.changelog.revision(self, nodeorrev) |
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149 |
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150 def baserevdiff(self, rev1, rev2): |
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151 return changelog.changelog.revdiff(self, rev1, rev2) |
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152 |
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153 class unionmanifest(unionrevlog, manifest.manifestrevlog): |
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154 def __init__(self, opener, opener2, linkmapper): |
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155 manifest.manifestrevlog.__init__(self, opener) |
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156 manifest2 = manifest.manifestrevlog(opener2) |
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157 unionrevlog.__init__(self, opener, self.indexfile, manifest2, |
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158 linkmapper) |
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159 |
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160 def baserevision(self, nodeorrev): |
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161 return manifest.manifestrevlog.revision(self, nodeorrev) |
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162 |
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163 def baserevdiff(self, rev1, rev2): |
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164 return manifest.manifestrevlog.revdiff(self, rev1, rev2) |
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165 |
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166 class unionfilelog(filelog.filelog): |
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167 def __init__(self, opener, path, opener2, linkmapper, repo): |
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168 filelog.filelog.__init__(self, opener, path) |
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169 filelog2 = filelog.filelog(opener2, path) |
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170 self._revlog = unionrevlog(opener, self.indexfile, |
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171 filelog2._revlog, linkmapper) |
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172 self._repo = repo |
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173 self.repotiprev = self._revlog.repotiprev |
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174 self.revlog2 = self._revlog.revlog2 |
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175 |
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176 def baserevision(self, nodeorrev): |
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177 return filelog.filelog.revision(self, nodeorrev) |
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178 |
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179 def baserevdiff(self, rev1, rev2): |
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180 return filelog.filelog.revdiff(self, rev1, rev2) |
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181 |
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182 def iscensored(self, rev): |
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183 """Check if a revision is censored.""" |
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184 if rev <= self.repotiprev: |
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185 return filelog.filelog.iscensored(self, rev) |
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186 node = self.node(rev) |
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187 return self.revlog2.iscensored(self.revlog2.rev(node)) |
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188 |
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189 class unionpeer(localrepo.localpeer): |
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190 def canpush(self): |
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191 return False |
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192 |
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193 class unionrepository(localrepo.localrepository): |
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194 def __init__(self, ui, path, path2): |
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195 localrepo.localrepository.__init__(self, ui, path) |
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196 self.ui.setconfig('phases', 'publish', False, 'unionrepo') |
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197 |
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198 self._url = 'union:%s+%s' % (util.expandpath(path), |
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199 util.expandpath(path2)) |
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200 self.repo2 = localrepo.localrepository(ui, path2) |
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201 |
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202 @localrepo.unfilteredpropertycache |
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203 def changelog(self): |
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204 return unionchangelog(self.svfs, self.repo2.svfs) |
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205 |
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206 def _clrev(self, rev2): |
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207 """map from repo2 changelog rev to temporary rev in self.changelog""" |
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208 node = self.repo2.changelog.node(rev2) |
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209 return self.changelog.rev(node) |
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210 |
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211 def _constructmanifest(self): |
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212 return unionmanifest(self.svfs, self.repo2.svfs, |
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213 self.unfiltered()._clrev) |
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214 |
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215 def url(self): |
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216 return self._url |
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217 |
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218 def file(self, f): |
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219 return unionfilelog(self.svfs, f, self.repo2.svfs, |
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220 self.unfiltered()._clrev, self) |
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221 |
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222 def close(self): |
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223 self.repo2.close() |
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224 |
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225 def cancopy(self): |
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226 return False |
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227 |
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228 def peer(self): |
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229 return unionpeer(self) |
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230 |
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231 def getcwd(self): |
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232 return pycompat.getcwd() # always outside the repo |
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233 |
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234 def instance(ui, path, create, intents=None): |
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235 if create: |
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236 raise error.Abort(_('cannot create new union repository')) |
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237 parentpath = ui.config("bundle", "mainreporoot") |
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238 if not parentpath: |
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239 # try to find the correct path to the working directory repo |
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240 parentpath = cmdutil.findrepo(pycompat.getcwd()) |
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241 if parentpath is None: |
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242 parentpath = '' |
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243 if parentpath: |
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244 # Try to make the full path relative so we get a nice, short URL. |
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245 # In particular, we don't want temp dir names in test outputs. |
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246 cwd = pycompat.getcwd() |
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247 if parentpath == cwd: |
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248 parentpath = '' |
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249 else: |
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250 cwd = pathutil.normasprefix(cwd) |
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251 if parentpath.startswith(cwd): |
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252 parentpath = parentpath[len(cwd):] |
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253 if path.startswith('union:'): |
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254 s = path.split(":", 1)[1].split("+", 1) |
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255 if len(s) == 1: |
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256 repopath, repopath2 = parentpath, s[0] |
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257 else: |
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258 repopath, repopath2 = s |
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259 else: |
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260 repopath, repopath2 = parentpath, path |
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261 return unionrepository(ui, repopath, repopath2) |