author | Pierre-Yves David <pierre-yves.david@octobus.net> |
Tue, 06 Apr 2021 10:38:27 +0200 | |
changeset 46897 | 1c52d77d7861 |
parent 46780 | 6266d19556ad |
child 47072 | 4c041c71ec01 |
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 __future__ import absolute_import |
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from .i18n import _ |
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from .pycompat import getattr |
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from . import ( |
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changelog, |
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cmdutil, |
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encoding, |
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error, |
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filelog, |
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localrepo, |
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manifest, |
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mdiff, |
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pathutil, |
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revlog, |
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util, |
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vfs as vfsmod, |
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) |
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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 = vfsmod.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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flags = _start & 0xFFFF |
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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 linkmapper is not None: # link is to same revlog |
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base = linkmapper(base) |
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this_rev = self.index.get_rev(node) |
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if this_rev is not None: |
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# this happens for the common revlog revisions |
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self.bundlerevs.add(this_rev) |
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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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# TODO: it's probably wrong to set compressed length to -1, but |
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# I have no idea if csize is valid in the base revlog context. |
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e = ( |
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flags, |
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-1, |
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rsize, |
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base, |
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link, |
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self.rev(p1node), |
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self.rev(p2node), |
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node, |
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) |
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self.index.append(e) |
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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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) |
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elif rev1 <= self.repotiprev and rev2 <= self.repotiprev: |
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return super(unionrevlog, self).revdiff(rev1, rev2) |
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return mdiff.textdiff(self.rawdata(rev1), self.rawdata(rev2)) |
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def _revisiondata(self, nodeorrev, _df=None, raw=False): |
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if isinstance(nodeorrev, int): |
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rev = nodeorrev |
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110 |
node = self.node(rev) |
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111 |
else: |
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112 |
node = nodeorrev |
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113 |
rev = self.rev(node) |
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114 |
|
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115 |
if rev > self.repotiprev: |
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116 |
# work around manifestrevlog NOT being a revlog |
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117 |
revlog2 = getattr(self.revlog2, '_revlog', self.revlog2) |
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118 |
func = revlog2._revisiondata |
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119 |
else: |
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120 |
func = super(unionrevlog, self)._revisiondata |
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121 |
return func(node, _df=_df, raw=raw) |
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122 |
|
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123 |
def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
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raise NotImplementedError |
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125 |
|
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126 |
def addgroup( |
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127 |
self, |
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128 |
deltas, |
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129 |
linkmapper, |
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transaction, |
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alwayscache=False, |
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addrevisioncb=None, |
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duplicaterevisioncb=None, |
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maybemissingparents=False, |
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135 |
): |
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136 |
raise NotImplementedError |
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137 |
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138 |
def strip(self, minlink, transaction): |
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139 |
raise NotImplementedError |
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140 |
|
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141 |
def checksize(self): |
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142 |
raise NotImplementedError |
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143 |
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144 |
|
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145 |
class unionchangelog(unionrevlog, changelog.changelog): |
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146 |
def __init__(self, opener, opener2): |
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147 |
changelog.changelog.__init__(self, opener) |
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148 |
linkmapper = None |
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changelog2 = changelog.changelog(opener2) |
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unionrevlog.__init__( |
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151 |
self, opener, self.indexfile, changelog2, linkmapper |
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152 |
) |
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153 |
|
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154 |
|
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155 |
class unionmanifest(unionrevlog, manifest.manifestrevlog): |
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156 |
def __init__(self, nodeconstants, opener, opener2, linkmapper): |
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157 |
manifest.manifestrevlog.__init__(self, nodeconstants, opener) |
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manifest2 = manifest.manifestrevlog(nodeconstants, opener2) |
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159 |
unionrevlog.__init__( |
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self, opener, self.indexfile, manifest2, linkmapper |
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161 |
) |
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162 |
|
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163 |
|
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164 |
class unionfilelog(filelog.filelog): |
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165 |
def __init__(self, opener, path, opener2, linkmapper, repo): |
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166 |
filelog.filelog.__init__(self, opener, path) |
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167 |
filelog2 = filelog.filelog(opener2, path) |
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self._revlog = unionrevlog( |
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opener, self.indexfile, filelog2._revlog, linkmapper |
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170 |
) |
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171 |
self._repo = repo |
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172 |
self.repotiprev = self._revlog.repotiprev |
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173 |
self.revlog2 = self._revlog.revlog2 |
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174 |
|
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175 |
def iscensored(self, rev): |
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176 |
"""Check if a revision is censored.""" |
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177 |
if rev <= self.repotiprev: |
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178 |
return filelog.filelog.iscensored(self, rev) |
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179 |
node = self.node(rev) |
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180 |
return self.revlog2.iscensored(self.revlog2.rev(node)) |
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181 |
|
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182 |
|
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183 |
class unionpeer(localrepo.localpeer): |
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184 |
def canpush(self): |
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185 |
return False |
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186 |
|
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187 |
|
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188 |
class unionrepository(object): |
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189 |
"""Represents the union of data in 2 repositories. |
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190 |
|
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191 |
Instances are not usable if constructed directly. Use ``instance()`` |
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192 |
or ``makeunionrepository()`` to create a usable instance. |
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193 |
""" |
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194 |
|
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195 |
def __init__(self, repo2, url): |
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196 |
self.repo2 = repo2 |
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197 |
self._url = url |
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198 |
|
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199 |
self.ui.setconfig(b'phases', b'publish', False, b'unionrepo') |
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200 |
|
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201 |
@localrepo.unfilteredpropertycache |
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202 |
def changelog(self): |
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203 |
return unionchangelog(self.svfs, self.repo2.svfs) |
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204 |
|
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205 |
@localrepo.unfilteredpropertycache |
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206 |
def manifestlog(self): |
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207 |
rootstore = unionmanifest( |
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208 |
self.nodeconstants, |
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209 |
self.svfs, |
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210 |
self.repo2.svfs, |
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211 |
self.unfiltered()._clrev, |
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212 |
) |
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213 |
return manifest.manifestlog( |
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214 |
self.svfs, self, rootstore, self.narrowmatch() |
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215 |
) |
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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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return self._url |
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def file(self, f): |
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return unionfilelog( |
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self.svfs, f, self.repo2.svfs, self.unfiltered()._clrev, self |
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) |
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def close(self): |
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self.repo2.close() |
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def cancopy(self): |
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return False |
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def peer(self): |
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return unionpeer(self) |
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def getcwd(self): |
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return encoding.getcwd() # always outside the repo |
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|
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def instance(ui, path, create, intents=None, createopts=None): |
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if create: |
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raise error.Abort(_(b'cannot create new union repository')) |
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parentpath = ui.config(b"bundle", b"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(encoding.getcwd()) |
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if parentpath is None: |
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parentpath = b'' |
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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 = encoding.getcwd() |
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if parentpath == cwd: |
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parentpath = b'' |
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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(b'union:'): |
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s = path.split(b":", 1)[1].split(b"+", 1) |
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if len(s) == 1: |
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repopath, repopath2 = parentpath, s[0] |
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else: |
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repopath, repopath2 = s |
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else: |
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repopath, repopath2 = parentpath, path |
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return makeunionrepository(ui, repopath, repopath2) |
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def makeunionrepository(ui, repopath1, repopath2): |
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"""Make a union repository object from 2 local repo paths.""" |
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repo1 = localrepo.instance(ui, repopath1, create=False) |
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repo2 = localrepo.instance(ui, repopath2, create=False) |
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url = b'union:%s+%s' % ( |
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util.expandpath(repopath1), |
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util.expandpath(repopath2), |
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) |
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class derivedunionrepository(unionrepository, repo1.__class__): |
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pass |
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repo = repo1 |
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repo.__class__ = derivedunionrepository |
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unionrepository.__init__(repo1, repo2, url) |
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return repo |