unionrepo.py
291 lines
| 10.1 KiB
| text/x-python
|
PythonLexer
/ mercurial / unionrepo.py
|
r18944 | # unionrepo.py - repository class for viewing union of repository changesets | ||
# | ||||
# Derived from bundlerepo.py | ||||
# Copyright 2006, 2007 Benoit Boissinot <bboissin@gmail.com> | ||||
# Copyright 2013 Unity Technologies, Mads Kiilerich <madski@unity3d.com> | ||||
# | ||||
# This software may be used and distributed according to the terms of the | ||||
# GNU General Public License version 2 or any later version. | ||||
"""Repository class for "in-memory pull" of one local repository to another, | ||||
allowing operations like diff and log with revsets. | ||||
""" | ||||
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r25988 | from __future__ import absolute_import | ||
from .i18n import _ | ||||
from .node import nullid | ||||
from . import ( | ||||
changelog, | ||||
cmdutil, | ||||
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r39843 | encoding, | ||
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r26587 | error, | ||
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r25988 | filelog, | ||
localrepo, | ||||
manifest, | ||||
mdiff, | ||||
pathutil, | ||||
revlog, | ||||
util, | ||||
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r31242 | vfs as vfsmod, | ||
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r25988 | ) | ||
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r18944 | |||
class unionrevlog(revlog.revlog): | ||||
def __init__(self, opener, indexfile, revlog2, linkmapper): | ||||
# How it works: | ||||
# To retrieve a revision, we just need to know the node id so we can | ||||
# look it up in revlog2. | ||||
# | ||||
# To differentiate a rev in the second revlog from a rev in the revlog, | ||||
# we check revision against repotiprev. | ||||
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r31242 | opener = vfsmod.readonlyvfs(opener) | ||
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r18944 | revlog.revlog.__init__(self, opener, indexfile) | ||
self.revlog2 = revlog2 | ||||
n = len(self) | ||||
self.repotiprev = n - 1 | ||||
self.bundlerevs = set() # used by 'bundle()' revset expression | ||||
for rev2 in self.revlog2: | ||||
rev = self.revlog2.index[rev2] | ||||
# rev numbers - in revlog2, very different from self.rev | ||||
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r38194 | _start, _csize, rsize, base, linkrev, p1rev, p2rev, node = rev | ||
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r27433 | flags = _start & 0xFFFF | ||
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r18944 | |||
if linkmapper is None: # link is to same revlog | ||||
assert linkrev == rev2 # we never link back | ||||
link = n | ||||
else: # rev must be mapped from repo2 cl to unified cl by linkmapper | ||||
link = linkmapper(linkrev) | ||||
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r26230 | if linkmapper is not None: # link is to same revlog | ||
base = linkmapper(base) | ||||
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r18944 | if node in self.nodemap: | ||
# this happens for the common revlog revisions | ||||
self.bundlerevs.add(self.nodemap[node]) | ||||
continue | ||||
p1node = self.revlog2.node(p1rev) | ||||
p2node = self.revlog2.node(p2rev) | ||||
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r38194 | # TODO: it's probably wrong to set compressed length to None, but | ||
# I have no idea if csize is valid in the base revlog context. | ||||
e = (flags, None, rsize, base, | ||||
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r18944 | link, self.rev(p1node), self.rev(p2node), node) | ||
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r38886 | self.index.append(e) | ||
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r18944 | self.nodemap[node] = n | ||
self.bundlerevs.add(n) | ||||
n += 1 | ||||
def _chunk(self, rev): | ||||
if rev <= self.repotiprev: | ||||
return revlog.revlog._chunk(self, rev) | ||||
return self.revlog2._chunk(self.node(rev)) | ||||
def revdiff(self, rev1, rev2): | ||||
"""return or calculate a delta between two revisions""" | ||||
if rev1 > self.repotiprev and rev2 > self.repotiprev: | ||||
return self.revlog2.revdiff( | ||||
self.revlog2.rev(self.node(rev1)), | ||||
self.revlog2.rev(self.node(rev2))) | ||||
elif rev1 <= self.repotiprev and rev2 <= self.repotiprev: | ||||
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r19630 | return self.baserevdiff(rev1, rev2) | ||
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r18944 | |||
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r31724 | return mdiff.textdiff(self.revision(rev1), self.revision(rev2)) | ||
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r18944 | |||
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r37515 | def revision(self, nodeorrev, _df=None, raw=False): | ||
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r18944 | """return an uncompressed revision of a given node or revision | ||
number. | ||||
""" | ||||
if isinstance(nodeorrev, int): | ||||
rev = nodeorrev | ||||
node = self.node(rev) | ||||
else: | ||||
node = nodeorrev | ||||
rev = self.rev(node) | ||||
if node == nullid: | ||||
return "" | ||||
if rev > self.repotiprev: | ||||
text = self.revlog2.revision(node) | ||||
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r40088 | self._revisioncache = (node, rev, text) | ||
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r18944 | else: | ||
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r19630 | text = self.baserevision(rev) | ||
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r18944 | # already cached | ||
return text | ||||
r42952 | def rawdata(self, nodeorrev, _df=None): | |||
return self.revision(nodeorrev, _df=_df, raw=True) | ||||
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r19630 | def baserevision(self, nodeorrev): | ||
# Revlog subclasses may override 'revision' method to modify format of | ||||
# content retrieved from revlog. To use unionrevlog with such class one | ||||
# needs to override 'baserevision' and make more specific call here. | ||||
return revlog.revlog.revision(self, nodeorrev) | ||||
def baserevdiff(self, rev1, rev2): | ||||
# Exists for the same purpose as baserevision. | ||||
return revlog.revlog.revdiff(self, rev1, rev2) | ||||
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r18944 | def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): | ||
raise NotImplementedError | ||||
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r42382 | def addgroup(self, deltas, linkmapper, transaction, addrevisioncb=None, | ||
maybemissingparents=False): | ||||
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r18944 | raise NotImplementedError | ||
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r42382 | def strip(self, minlink, transaction): | ||
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r18944 | raise NotImplementedError | ||
def checksize(self): | ||||
raise NotImplementedError | ||||
class unionchangelog(unionrevlog, changelog.changelog): | ||||
def __init__(self, opener, opener2): | ||||
changelog.changelog.__init__(self, opener) | ||||
linkmapper = None | ||||
changelog2 = changelog.changelog(opener2) | ||||
unionrevlog.__init__(self, opener, self.indexfile, changelog2, | ||||
linkmapper) | ||||
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r19630 | def baserevision(self, nodeorrev): | ||
# Although changelog doesn't override 'revision' method, some extensions | ||||
# may replace this class with another that does. Same story with | ||||
# manifest and filelog classes. | ||||
return changelog.changelog.revision(self, nodeorrev) | ||||
def baserevdiff(self, rev1, rev2): | ||||
return changelog.changelog.revdiff(self, rev1, rev2) | ||||
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r30374 | class unionmanifest(unionrevlog, manifest.manifestrevlog): | ||
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r18944 | def __init__(self, opener, opener2, linkmapper): | ||
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r30374 | manifest.manifestrevlog.__init__(self, opener) | ||
manifest2 = manifest.manifestrevlog(opener2) | ||||
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r18944 | unionrevlog.__init__(self, opener, self.indexfile, manifest2, | ||
linkmapper) | ||||
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r19630 | def baserevision(self, nodeorrev): | ||
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r30374 | return manifest.manifestrevlog.revision(self, nodeorrev) | ||
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r19630 | |||
def baserevdiff(self, rev1, rev2): | ||||
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r30374 | return manifest.manifestrevlog.revdiff(self, rev1, rev2) | ||
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r19630 | |||
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r37515 | class unionfilelog(filelog.filelog): | ||
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r18944 | def __init__(self, opener, path, opener2, linkmapper, repo): | ||
filelog.filelog.__init__(self, opener, path) | ||||
filelog2 = filelog.filelog(opener2, path) | ||||
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r37515 | self._revlog = unionrevlog(opener, self.indexfile, | ||
filelog2._revlog, linkmapper) | ||||
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r18944 | self._repo = repo | ||
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r37515 | self.repotiprev = self._revlog.repotiprev | ||
self.revlog2 = self._revlog.revlog2 | ||||
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r18944 | |||
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r19630 | def baserevision(self, nodeorrev): | ||
return filelog.filelog.revision(self, nodeorrev) | ||||
def baserevdiff(self, rev1, rev2): | ||||
return filelog.filelog.revdiff(self, rev1, rev2) | ||||
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r24118 | def iscensored(self, rev): | ||
"""Check if a revision is censored.""" | ||||
if rev <= self.repotiprev: | ||||
return filelog.filelog.iscensored(self, rev) | ||||
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r27723 | node = self.node(rev) | ||
return self.revlog2.iscensored(self.revlog2.rev(node)) | ||||
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r24118 | |||
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r18944 | class unionpeer(localrepo.localpeer): | ||
def canpush(self): | ||||
return False | ||||
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r39641 | class unionrepository(object): | ||
"""Represents the union of data in 2 repositories. | ||||
Instances are not usable if constructed directly. Use ``instance()`` | ||||
or ``makeunionrepository()`` to create a usable instance. | ||||
""" | ||||
def __init__(self, repo2, url): | ||||
self.repo2 = repo2 | ||||
self._url = url | ||||
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r20790 | self.ui.setconfig('phases', 'publish', False, 'unionrepo') | ||
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r18944 | |||
@localrepo.unfilteredpropertycache | ||||
def changelog(self): | ||||
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r23878 | return unionchangelog(self.svfs, self.repo2.svfs) | ||
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r18944 | |||
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r39799 | @localrepo.unfilteredpropertycache | ||
def manifestlog(self): | ||||
rootstore = unionmanifest(self.svfs, self.repo2.svfs, | ||||
self.unfiltered()._clrev) | ||||
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r41067 | return manifest.manifestlog(self.svfs, self, rootstore, | ||
self.narrowmatch()) | ||||
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r39799 | |||
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r18944 | def _clrev(self, rev2): | ||
"""map from repo2 changelog rev to temporary rev in self.changelog""" | ||||
node = self.repo2.changelog.node(rev2) | ||||
return self.changelog.rev(node) | ||||
def url(self): | ||||
return self._url | ||||
def file(self, f): | ||||
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r23878 | return unionfilelog(self.svfs, f, self.repo2.svfs, | ||
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r28222 | self.unfiltered()._clrev, self) | ||
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r18944 | |||
def close(self): | ||||
self.repo2.close() | ||||
def cancopy(self): | ||||
return False | ||||
def peer(self): | ||||
return unionpeer(self) | ||||
def getcwd(self): | ||||
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r39843 | return encoding.getcwd() # always outside the repo | ||
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r18944 | |||
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r39585 | def instance(ui, path, create, intents=None, createopts=None): | ||
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r18944 | if create: | ||
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r26587 | raise error.Abort(_('cannot create new union repository')) | ||
r33179 | parentpath = ui.config("bundle", "mainreporoot") | |||
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r18944 | if not parentpath: | ||
# try to find the correct path to the working directory repo | ||||
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r39843 | parentpath = cmdutil.findrepo(encoding.getcwd()) | ||
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r18944 | if parentpath is None: | ||
parentpath = '' | ||||
if parentpath: | ||||
# Try to make the full path relative so we get a nice, short URL. | ||||
# In particular, we don't want temp dir names in test outputs. | ||||
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r39843 | cwd = encoding.getcwd() | ||
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r18944 | if parentpath == cwd: | ||
parentpath = '' | ||||
else: | ||||
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r24835 | cwd = pathutil.normasprefix(cwd) | ||
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r18944 | if parentpath.startswith(cwd): | ||
parentpath = parentpath[len(cwd):] | ||||
if path.startswith('union:'): | ||||
s = path.split(":", 1)[1].split("+", 1) | ||||
if len(s) == 1: | ||||
repopath, repopath2 = parentpath, s[0] | ||||
else: | ||||
repopath, repopath2 = s | ||||
else: | ||||
repopath, repopath2 = parentpath, path | ||||
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r39641 | |||
return makeunionrepository(ui, repopath, repopath2) | ||||
def makeunionrepository(ui, repopath1, repopath2): | ||||
"""Make a union repository object from 2 local repo paths.""" | ||||
repo1 = localrepo.instance(ui, repopath1, create=False) | ||||
repo2 = localrepo.instance(ui, repopath2, create=False) | ||||
url = 'union:%s+%s' % (util.expandpath(repopath1), | ||||
util.expandpath(repopath2)) | ||||
class derivedunionrepository(unionrepository, repo1.__class__): | ||||
pass | ||||
repo = repo1 | ||||
repo.__class__ = derivedunionrepository | ||||
unionrepository.__init__(repo1, repo2, url) | ||||
return repo | ||||