author | Pierre-Yves David <pierre-yves.david@fb.com> |
Sat, 09 May 2015 23:40:40 -0700 | |
changeset 25125 | bd625cd4e5e7 |
parent 24835 | e4f75c93f073 |
child 25988 | 83f220c7d6f0 |
permissions | -rw-r--r-- |
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# unionrepo.py - repository class for viewing union of repository changesets |
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# |
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# Derived from bundlerepo.py |
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# Copyright 2006, 2007 Benoit Boissinot <bboissin@gmail.com> |
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# Copyright 2013 Unity Technologies, Mads Kiilerich <madski@unity3d.com> |
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# |
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# This software may be used and distributed according to the terms of the |
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# GNU General Public License version 2 or any later version. |
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"""Repository class for "in-memory pull" of one local repository to another, |
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allowing operations like diff and log with revsets. |
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""" |
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from node import nullid |
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from i18n import _ |
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import os |
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import util, mdiff, cmdutil, scmutil |
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import localrepo, changelog, manifest, filelog, revlog, pathutil |
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class unionrevlog(revlog.revlog): |
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def __init__(self, opener, indexfile, revlog2, linkmapper): |
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# How it works: |
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# To retrieve a revision, we just need to know the node id so we can |
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# look it up in revlog2. |
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# |
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# To differentiate a rev in the second revlog from a rev in the revlog, |
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# we check revision against repotiprev. |
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opener = scmutil.readonlyvfs(opener) |
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revlog.revlog.__init__(self, opener, indexfile) |
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self.revlog2 = revlog2 |
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n = len(self) |
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self.repotiprev = n - 1 |
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self.bundlerevs = set() # used by 'bundle()' revset expression |
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for rev2 in self.revlog2: |
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rev = self.revlog2.index[rev2] |
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# rev numbers - in revlog2, very different from self.rev |
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_start, _csize, _rsize, _base, linkrev, p1rev, p2rev, node = rev |
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if linkmapper is None: # link is to same revlog |
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assert linkrev == rev2 # we never link back |
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link = n |
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else: # rev must be mapped from repo2 cl to unified cl by linkmapper |
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link = linkmapper(linkrev) |
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if node in self.nodemap: |
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# this happens for the common revlog revisions |
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self.bundlerevs.add(self.nodemap[node]) |
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continue |
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p1node = self.revlog2.node(p1rev) |
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p2node = self.revlog2.node(p2rev) |
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e = (None, None, None, None, |
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link, self.rev(p1node), self.rev(p2node), node) |
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self.index.insert(-1, e) |
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self.nodemap[node] = n |
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self.bundlerevs.add(n) |
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n += 1 |
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def _chunk(self, rev): |
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if rev <= self.repotiprev: |
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return revlog.revlog._chunk(self, rev) |
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return self.revlog2._chunk(self.node(rev)) |
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def revdiff(self, rev1, rev2): |
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"""return or calculate a delta between two revisions""" |
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if rev1 > self.repotiprev and rev2 > self.repotiprev: |
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return self.revlog2.revdiff( |
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self.revlog2.rev(self.node(rev1)), |
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self.revlog2.rev(self.node(rev2))) |
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elif rev1 <= self.repotiprev and rev2 <= self.repotiprev: |
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return self.baserevdiff(rev1, rev2) |
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return mdiff.textdiff(self.revision(self.node(rev1)), |
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self.revision(self.node(rev2))) |
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def revision(self, nodeorrev): |
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"""return an uncompressed revision of a given node or revision |
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number. |
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""" |
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if isinstance(nodeorrev, int): |
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rev = nodeorrev |
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node = self.node(rev) |
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else: |
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node = nodeorrev |
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rev = self.rev(node) |
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if node == nullid: |
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return "" |
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if rev > self.repotiprev: |
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text = self.revlog2.revision(node) |
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self._cache = (node, rev, text) |
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else: |
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text = self.baserevision(rev) |
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# already cached |
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return text |
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def baserevision(self, nodeorrev): |
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# Revlog subclasses may override 'revision' method to modify format of |
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# content retrieved from revlog. To use unionrevlog with such class one |
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# needs to override 'baserevision' and make more specific call here. |
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return revlog.revlog.revision(self, nodeorrev) |
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def baserevdiff(self, rev1, rev2): |
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# Exists for the same purpose as baserevision. |
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return revlog.revlog.revdiff(self, rev1, rev2) |
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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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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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raise NotImplementedError |
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118 |
|
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class unionchangelog(unionrevlog, changelog.changelog): |
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120 |
def __init__(self, opener, opener2): |
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changelog.changelog.__init__(self, opener) |
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linkmapper = None |
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changelog2 = changelog.changelog(opener2) |
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unionrevlog.__init__(self, opener, self.indexfile, changelog2, |
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125 |
linkmapper) |
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126 |
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def baserevision(self, nodeorrev): |
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# 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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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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return changelog.changelog.revdiff(self, rev1, rev2) |
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135 |
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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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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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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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filelog.filelog.__init__(self, opener, path) |
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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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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 iscensored(self, rev): |
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164 |
"""Check if a revision is censored.""" |
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165 |
if rev <= self.repotiprev: |
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166 |
return filelog.filelog.iscensored(self, rev) |
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167 |
return self.revlog2.iscensored(rev) |
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168 |
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169 |
class unionpeer(localrepo.localpeer): |
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170 |
def canpush(self): |
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171 |
return False |
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172 |
|
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173 |
class unionrepository(localrepo.localrepository): |
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174 |
def __init__(self, ui, path, path2): |
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175 |
localrepo.localrepository.__init__(self, ui, path) |
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self.ui.setconfig('phases', 'publish', False, 'unionrepo') |
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177 |
|
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178 |
self._url = 'union:%s+%s' % (util.expandpath(path), |
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179 |
util.expandpath(path2)) |
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180 |
self.repo2 = localrepo.localrepository(ui, path2) |
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181 |
|
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182 |
@localrepo.unfilteredpropertycache |
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183 |
def changelog(self): |
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184 |
return unionchangelog(self.svfs, self.repo2.svfs) |
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185 |
|
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186 |
def _clrev(self, rev2): |
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187 |
"""map from repo2 changelog rev to temporary rev in self.changelog""" |
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188 |
node = self.repo2.changelog.node(rev2) |
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189 |
return self.changelog.rev(node) |
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190 |
|
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191 |
@localrepo.unfilteredpropertycache |
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192 |
def manifest(self): |
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193 |
return unionmanifest(self.svfs, self.repo2.svfs, |
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194 |
self._clrev) |
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195 |
|
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196 |
def url(self): |
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197 |
return self._url |
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198 |
|
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199 |
def file(self, f): |
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200 |
return unionfilelog(self.svfs, f, self.repo2.svfs, |
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201 |
self._clrev, self) |
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202 |
|
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203 |
def close(self): |
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204 |
self.repo2.close() |
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205 |
|
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206 |
def cancopy(self): |
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207 |
return False |
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208 |
|
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209 |
def peer(self): |
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210 |
return unionpeer(self) |
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211 |
|
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212 |
def getcwd(self): |
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213 |
return os.getcwd() # always outside the repo |
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214 |
|
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215 |
def instance(ui, path, create): |
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216 |
if create: |
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217 |
raise util.Abort(_('cannot create new union repository')) |
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parentpath = ui.config("bundle", "mainreporoot", "") |
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if not parentpath: |
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# try to find the correct path to the working directory repo |
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parentpath = cmdutil.findrepo(os.getcwd()) |
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if parentpath is None: |
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parentpath = '' |
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if parentpath: |
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# Try to make the full path relative so we get a nice, short URL. |
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# In particular, we don't want temp dir names in test outputs. |
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cwd = os.getcwd() |
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if parentpath == cwd: |
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parentpath = '' |
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else: |
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cwd = pathutil.normasprefix(cwd) |
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if parentpath.startswith(cwd): |
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parentpath = parentpath[len(cwd):] |
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if path.startswith('union:'): |
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s = path.split(":", 1)[1].split("+", 1) |
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if len(s) == 1: |
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repopath, repopath2 = parentpath, s[0] |
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238 |
else: |
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repopath, repopath2 = s |
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240 |
else: |
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repopath, repopath2 = parentpath, path |
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return unionrepository(ui, repopath, repopath2) |