# localrepo.py - read/write repository class for mercurial
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from node import bin, hex, nullid, nullrev, short
from i18n import _
import peer, changegroup, subrepo, discovery, pushkey, obsolete
import changelog, dirstate, filelog, manifest, context, bookmarks, phases
import lock, transaction, store, encoding, base85
import scmutil, util, extensions, hook, error, revset
import match as matchmod
import merge as mergemod
import tags as tagsmod
from lock import release
import weakref, errno, os, time, inspect
propertycache = util.propertycache
filecache = scmutil.filecache
class storecache(filecache):
"""filecache for files in the store"""
def join(self, obj, fname):
return obj.sjoin(fname)
MODERNCAPS = set(('lookup', 'branchmap', 'pushkey', 'known', 'getbundle'))
LEGACYCAPS = MODERNCAPS.union(set(['changegroupsubset']))
class localpeer(peer.peerrepository):
'''peer for a local repo; reflects only the most recent API'''
def __init__(self, repo, caps=MODERNCAPS):
peer.peerrepository.__init__(self)
self._repo = repo
self.ui = repo.ui
self._caps = repo._restrictcapabilities(caps)
self.requirements = repo.requirements
self.supportedformats = repo.supportedformats
def close(self):
self._repo.close()
def _capabilities(self):
return self._caps
def local(self):
return self._repo
def canpush(self):
return True
def url(self):
return self._repo.url()
def lookup(self, key):
return self._repo.lookup(key)
def branchmap(self):
return discovery.visiblebranchmap(self._repo)
def heads(self):
return discovery.visibleheads(self._repo)
def known(self, nodes):
return self._repo.known(nodes)
def getbundle(self, source, heads=None, common=None):
return self._repo.getbundle(source, heads=heads, common=common)
# TODO We might want to move the next two calls into legacypeer and add
# unbundle instead.
def lock(self):
return self._repo.lock()
def addchangegroup(self, cg, source, url):
return self._repo.addchangegroup(cg, source, url)
def pushkey(self, namespace, key, old, new):
return self._repo.pushkey(namespace, key, old, new)
def listkeys(self, namespace):
return self._repo.listkeys(namespace)
def debugwireargs(self, one, two, three=None, four=None, five=None):
'''used to test argument passing over the wire'''
return "%s %s %s %s %s" % (one, two, three, four, five)
class locallegacypeer(localpeer):
'''peer extension which implements legacy methods too; used for tests with
restricted capabilities'''
def __init__(self, repo):
localpeer.__init__(self, repo, caps=LEGACYCAPS)
def branches(self, nodes):
return self._repo.branches(nodes)
def between(self, pairs):
return self._repo.between(pairs)
def changegroup(self, basenodes, source):
return self._repo.changegroup(basenodes, source)
def changegroupsubset(self, bases, heads, source):
return self._repo.changegroupsubset(bases, heads, source)
class localrepository(object):
supportedformats = set(('revlogv1', 'generaldelta'))
supported = supportedformats | set(('store', 'fncache', 'shared',
'dotencode'))
openerreqs = set(('revlogv1', 'generaldelta'))
requirements = ['revlogv1']
def _baserequirements(self, create):
return self.requirements[:]
def __init__(self, baseui, path=None, create=False):
self.wopener = scmutil.opener(path, expand=True)
self.wvfs = self.wopener
self.root = self.wvfs.base
self.path = self.wvfs.join(".hg")
self.origroot = path
self.auditor = scmutil.pathauditor(self.root, self._checknested)
self.opener = scmutil.opener(self.path)
self.vfs = self.opener
self.baseui = baseui
self.ui = baseui.copy()
# A list of callback to shape the phase if no data were found.
# Callback are in the form: func(repo, roots) --> processed root.
# This list it to be filled by extension during repo setup
self._phasedefaults = []
try:
self.ui.readconfig(self.join("hgrc"), self.root)
extensions.loadall(self.ui)
except IOError:
pass
if not self.vfs.isdir():
if create:
if not self.wvfs.exists():
self.wvfs.makedirs()
self.vfs.makedir(notindexed=True)
requirements = self._baserequirements(create)
if self.ui.configbool('format', 'usestore', True):
self.vfs.mkdir("store")
requirements.append("store")
if self.ui.configbool('format', 'usefncache', True):
requirements.append("fncache")
if self.ui.configbool('format', 'dotencode', True):
requirements.append('dotencode')
# create an invalid changelog
self.vfs.append(
"00changelog.i",
'\0\0\0\2' # represents revlogv2
' dummy changelog to prevent using the old repo layout'
)
if self.ui.configbool('format', 'generaldelta', False):
requirements.append("generaldelta")
requirements = set(requirements)
else:
raise error.RepoError(_("repository %s not found") % path)
elif create:
raise error.RepoError(_("repository %s already exists") % path)
else:
try:
requirements = scmutil.readrequires(self.vfs, self.supported)
except IOError, inst:
if inst.errno != errno.ENOENT:
raise
requirements = set()
self.sharedpath = self.path
try:
s = os.path.realpath(self.opener.read("sharedpath").rstrip('\n'))
if not os.path.exists(s):
raise error.RepoError(
_('.hg/sharedpath points to nonexistent directory %s') % s)
self.sharedpath = s
except IOError, inst:
if inst.errno != errno.ENOENT:
raise
self.store = store.store(requirements, self.sharedpath, scmutil.opener)
self.spath = self.store.path
self.sopener = self.store.opener
self.svfs = self.sopener
self.sjoin = self.store.join
self.opener.createmode = self.store.createmode
self._applyrequirements(requirements)
if create:
self._writerequirements()
self._branchcache = None
self._branchcachetip = None
self.filterpats = {}
self._datafilters = {}
self._transref = self._lockref = self._wlockref = None
# A cache for various files under .hg/ that tracks file changes,
# (used by the filecache decorator)
#
# Maps a property name to its util.filecacheentry
self._filecache = {}
def close(self):
pass
def _restrictcapabilities(self, caps):
return caps
def _applyrequirements(self, requirements):
self.requirements = requirements
self.sopener.options = dict((r, 1) for r in requirements
if r in self.openerreqs)
def _writerequirements(self):
reqfile = self.opener("requires", "w")
for r in self.requirements:
reqfile.write("%s\n" % r)
reqfile.close()
def _checknested(self, path):
"""Determine if path is a legal nested repository."""
if not path.startswith(self.root):
return False
subpath = path[len(self.root) + 1:]
normsubpath = util.pconvert(subpath)
# XXX: Checking against the current working copy is wrong in
# the sense that it can reject things like
#
# $ hg cat -r 10 sub/x.txt
#
# if sub/ is no longer a subrepository in the working copy
# parent revision.
#
# However, it can of course also allow things that would have
# been rejected before, such as the above cat command if sub/
# is a subrepository now, but was a normal directory before.
# The old path auditor would have rejected by mistake since it
# panics when it sees sub/.hg/.
#
# All in all, checking against the working copy seems sensible
# since we want to prevent access to nested repositories on
# the filesystem *now*.
ctx = self[None]
parts = util.splitpath(subpath)
while parts:
prefix = '/'.join(parts)
if prefix in ctx.substate:
if prefix == normsubpath:
return True
else:
sub = ctx.sub(prefix)
return sub.checknested(subpath[len(prefix) + 1:])
else:
parts.pop()
return False
def peer(self):
return localpeer(self) # not cached to avoid reference cycle
@filecache('bookmarks')
def _bookmarks(self):
return bookmarks.read(self)
@filecache('bookmarks.current')
def _bookmarkcurrent(self):
return bookmarks.readcurrent(self)
def _writebookmarks(self, marks):
bookmarks.write(self)
def bookmarkheads(self, bookmark):
name = bookmark.split('@', 1)[0]
heads = []
for mark, n in self._bookmarks.iteritems():
if mark.split('@', 1)[0] == name:
heads.append(n)
return heads
@storecache('phaseroots')
def _phasecache(self):
return phases.phasecache(self, self._phasedefaults)
@storecache('obsstore')
def obsstore(self):
store = obsolete.obsstore(self.sopener)
if store and not obsolete._enabled:
# message is rare enough to not be translated
msg = 'obsolete feature not enabled but %i markers found!\n'
self.ui.warn(msg % len(list(store)))
return store
@propertycache
def hiddenrevs(self):
"""hiddenrevs: revs that should be hidden by command and tools
This set is carried on the repo to ease initialisation and lazy
loading it'll probably move back to changelog for efficienty and
consistency reason
Note that the hiddenrevs will needs invalidations when
- a new changesets is added (possible unstable above extinct)
- a new obsolete marker is added (possible new extinct changeset)
"""
hidden = set()
if self.obsstore:
### hide extinct changeset that are not accessible by any mean
hiddenquery = 'extinct() - ::(. + bookmark() + tagged())'
hidden.update(self.revs(hiddenquery))
return hidden
@storecache('00changelog.i')
def changelog(self):
c = changelog.changelog(self.sopener)
if 'HG_PENDING' in os.environ:
p = os.environ['HG_PENDING']
if p.startswith(self.root):
c.readpending('00changelog.i.a')
return c
@storecache('00manifest.i')
def manifest(self):
return manifest.manifest(self.sopener)
@filecache('dirstate')
def dirstate(self):
warned = [0]
def validate(node):
try:
self.changelog.rev(node)
return node
except error.LookupError:
if not warned[0]:
warned[0] = True
self.ui.warn(_("warning: ignoring unknown"
" working parent %s!\n") % short(node))
return nullid
return dirstate.dirstate(self.opener, self.ui, self.root, validate)
def __getitem__(self, changeid):
if changeid is None:
return context.workingctx(self)
return context.changectx(self, changeid)
def __contains__(self, changeid):
try:
return bool(self.lookup(changeid))
except error.RepoLookupError:
return False
def __nonzero__(self):
return True
def __len__(self):
return len(self.changelog)
def __iter__(self):
for i in xrange(len(self)):
yield i
def revs(self, expr, *args):
'''Return a list of revisions matching the given revset'''
expr = revset.formatspec(expr, *args)
m = revset.match(None, expr)
return [r for r in m(self, range(len(self)))]
def set(self, expr, *args):
'''
Yield a context for each matching revision, after doing arg
replacement via revset.formatspec
'''
for r in self.revs(expr, *args):
yield self[r]
def url(self):
return 'file:' + self.root
def hook(self, name, throw=False, **args):
return hook.hook(self.ui, self, name, throw, **args)
tag_disallowed = ':\r\n'
def _tag(self, names, node, message, local, user, date, extra={}):
if isinstance(names, str):
allchars = names
names = (names,)
else:
allchars = ''.join(names)
for c in self.tag_disallowed:
if c in allchars:
raise util.Abort(_('%r cannot be used in a tag name') % c)
branches = self.branchmap()
for name in names:
self.hook('pretag', throw=True, node=hex(node), tag=name,
local=local)
if name in branches:
self.ui.warn(_("warning: tag %s conflicts with existing"
" branch name\n") % name)
def writetags(fp, names, munge, prevtags):
fp.seek(0, 2)
if prevtags and prevtags[-1] != '\n':
fp.write('\n')
for name in names:
m = munge and munge(name) or name
if (self._tagscache.tagtypes and
name in self._tagscache.tagtypes):
old = self.tags().get(name, nullid)
fp.write('%s %s\n' % (hex(old), m))
fp.write('%s %s\n' % (hex(node), m))
fp.close()
prevtags = ''
if local:
try:
fp = self.opener('localtags', 'r+')
except IOError:
fp = self.opener('localtags', 'a')
else:
prevtags = fp.read()
# local tags are stored in the current charset
writetags(fp, names, None, prevtags)
for name in names:
self.hook('tag', node=hex(node), tag=name, local=local)
return
try:
fp = self.wfile('.hgtags', 'rb+')
except IOError, e:
if e.errno != errno.ENOENT:
raise
fp = self.wfile('.hgtags', 'ab')
else:
prevtags = fp.read()
# committed tags are stored in UTF-8
writetags(fp, names, encoding.fromlocal, prevtags)
fp.close()
self.invalidatecaches()
if '.hgtags' not in self.dirstate:
self[None].add(['.hgtags'])
m = matchmod.exact(self.root, '', ['.hgtags'])
tagnode = self.commit(message, user, date, extra=extra, match=m)
for name in names:
self.hook('tag', node=hex(node), tag=name, local=local)
return tagnode
def tag(self, names, node, message, local, user, date):
'''tag a revision with one or more symbolic names.
names is a list of strings or, when adding a single tag, names may be a
string.
if local is True, the tags are stored in a per-repository file.
otherwise, they are stored in the .hgtags file, and a new
changeset is committed with the change.
keyword arguments:
local: whether to store tags in non-version-controlled file
(default False)
message: commit message to use if committing
user: name of user to use if committing
date: date tuple to use if committing'''
if not local:
for x in self.status()[:5]:
if '.hgtags' in x:
raise util.Abort(_('working copy of .hgtags is changed '
'(please commit .hgtags manually)'))
self.tags() # instantiate the cache
self._tag(names, node, message, local, user, date)
@propertycache
def _tagscache(self):
'''Returns a tagscache object that contains various tags related
caches.'''
# This simplifies its cache management by having one decorated
# function (this one) and the rest simply fetch things from it.
class tagscache(object):
def __init__(self):
# These two define the set of tags for this repository. tags
# maps tag name to node; tagtypes maps tag name to 'global' or
# 'local'. (Global tags are defined by .hgtags across all
# heads, and local tags are defined in .hg/localtags.)
# They constitute the in-memory cache of tags.
self.tags = self.tagtypes = None
self.nodetagscache = self.tagslist = None
cache = tagscache()
cache.tags, cache.tagtypes = self._findtags()
return cache
def tags(self):
'''return a mapping of tag to node'''
t = {}
for k, v in self._tagscache.tags.iteritems():
try:
# ignore tags to unknown nodes
self.changelog.rev(v)
t[k] = v
except (error.LookupError, ValueError):
pass
return t
def _findtags(self):
'''Do the hard work of finding tags. Return a pair of dicts
(tags, tagtypes) where tags maps tag name to node, and tagtypes
maps tag name to a string like \'global\' or \'local\'.
Subclasses or extensions are free to add their own tags, but
should be aware that the returned dicts will be retained for the
duration of the localrepo object.'''
# XXX what tagtype should subclasses/extensions use? Currently
# mq and bookmarks add tags, but do not set the tagtype at all.
# Should each extension invent its own tag type? Should there
# be one tagtype for all such "virtual" tags? Or is the status
# quo fine?
alltags = {} # map tag name to (node, hist)
tagtypes = {}
tagsmod.findglobaltags(self.ui, self, alltags, tagtypes)
tagsmod.readlocaltags(self.ui, self, alltags, tagtypes)
# Build the return dicts. Have to re-encode tag names because
# the tags module always uses UTF-8 (in order not to lose info
# writing to the cache), but the rest of Mercurial wants them in
# local encoding.
tags = {}
for (name, (node, hist)) in alltags.iteritems():
if node != nullid:
tags[encoding.tolocal(name)] = node
tags['tip'] = self.changelog.tip()
tagtypes = dict([(encoding.tolocal(name), value)
for (name, value) in tagtypes.iteritems()])
return (tags, tagtypes)
def tagtype(self, tagname):
'''
return the type of the given tag. result can be:
'local' : a local tag
'global' : a global tag
None : tag does not exist
'''
return self._tagscache.tagtypes.get(tagname)
def tagslist(self):
'''return a list of tags ordered by revision'''
if not self._tagscache.tagslist:
l = []
for t, n in self.tags().iteritems():
r = self.changelog.rev(n)
l.append((r, t, n))
self._tagscache.tagslist = [(t, n) for r, t, n in sorted(l)]
return self._tagscache.tagslist
def nodetags(self, node):
'''return the tags associated with a node'''
if not self._tagscache.nodetagscache:
nodetagscache = {}
for t, n in self._tagscache.tags.iteritems():
nodetagscache.setdefault(n, []).append(t)
for tags in nodetagscache.itervalues():
tags.sort()
self._tagscache.nodetagscache = nodetagscache
return self._tagscache.nodetagscache.get(node, [])
def nodebookmarks(self, node):
marks = []
for bookmark, n in self._bookmarks.iteritems():
if n == node:
marks.append(bookmark)
return sorted(marks)
def _branchtags(self, partial, lrev):
# TODO: rename this function?
tiprev = len(self) - 1
if lrev != tiprev:
ctxgen = (self[r] for r in xrange(lrev + 1, tiprev + 1))
self._updatebranchcache(partial, ctxgen)
self._writebranchcache(partial, self.changelog.tip(), tiprev)
return partial
def updatebranchcache(self):
tip = self.changelog.tip()
if self._branchcache is not None and self._branchcachetip == tip:
return
oldtip = self._branchcachetip
self._branchcachetip = tip
if oldtip is None or oldtip not in self.changelog.nodemap:
partial, last, lrev = self._readbranchcache()
else:
lrev = self.changelog.rev(oldtip)
partial = self._branchcache
self._branchtags(partial, lrev)
# this private cache holds all heads (not just the branch tips)
self._branchcache = partial
def branchmap(self):
'''returns a dictionary {branch: [branchheads]}'''
self.updatebranchcache()
return self._branchcache
def _branchtip(self, heads):
'''return the tipmost branch head in heads'''
tip = heads[-1]
for h in reversed(heads):
if not self[h].closesbranch():
tip = h
break
return tip
def branchtip(self, branch):
'''return the tip node for a given branch'''
if branch not in self.branchmap():
raise error.RepoLookupError(_("unknown branch '%s'") % branch)
return self._branchtip(self.branchmap()[branch])
def branchtags(self):
'''return a dict where branch names map to the tipmost head of
the branch, open heads come before closed'''
bt = {}
for bn, heads in self.branchmap().iteritems():
bt[bn] = self._branchtip(heads)
return bt
def _readbranchcache(self):
partial = {}
try:
f = self.opener("cache/branchheads")
lines = f.read().split('\n')
f.close()
except (IOError, OSError):
return {}, nullid, nullrev
try:
last, lrev = lines.pop(0).split(" ", 1)
last, lrev = bin(last), int(lrev)
if lrev >= len(self) or self[lrev].node() != last:
# invalidate the cache
raise ValueError('invalidating branch cache (tip differs)')
for l in lines:
if not l:
continue
node, label = l.split(" ", 1)
label = encoding.tolocal(label.strip())
if not node in self:
raise ValueError('invalidating branch cache because node '+
'%s does not exist' % node)
partial.setdefault(label, []).append(bin(node))
except KeyboardInterrupt:
raise
except Exception, inst:
if self.ui.debugflag:
self.ui.warn(str(inst), '\n')
partial, last, lrev = {}, nullid, nullrev
return partial, last, lrev
def _writebranchcache(self, branches, tip, tiprev):
try:
f = self.opener("cache/branchheads", "w", atomictemp=True)
f.write("%s %s\n" % (hex(tip), tiprev))
for label, nodes in branches.iteritems():
for node in nodes:
f.write("%s %s\n" % (hex(node), encoding.fromlocal(label)))
f.close()
except (IOError, OSError):
pass
def _updatebranchcache(self, partial, ctxgen):
"""Given a branchhead cache, partial, that may have extra nodes or be
missing heads, and a generator of nodes that are at least a superset of
heads missing, this function updates partial to be correct.
"""
# collect new branch entries
newbranches = {}
for c in ctxgen:
newbranches.setdefault(c.branch(), []).append(c.node())
# if older branchheads are reachable from new ones, they aren't
# really branchheads. Note checking parents is insufficient:
# 1 (branch a) -> 2 (branch b) -> 3 (branch a)
for branch, newnodes in newbranches.iteritems():
bheads = partial.setdefault(branch, [])
# Remove candidate heads that no longer are in the repo (e.g., as
# the result of a strip that just happened). Avoid using 'node in
# self' here because that dives down into branchcache code somewhat
# recrusively.
bheadrevs = [self.changelog.rev(node) for node in bheads
if self.changelog.hasnode(node)]
newheadrevs = [self.changelog.rev(node) for node in newnodes
if self.changelog.hasnode(node)]
ctxisnew = bheadrevs and min(newheadrevs) > max(bheadrevs)
# Remove duplicates - nodes that are in newheadrevs and are already
# in bheadrevs. This can happen if you strip a node whose parent
# was already a head (because they're on different branches).
bheadrevs = sorted(set(bheadrevs).union(newheadrevs))
# Starting from tip means fewer passes over reachable. If we know
# the new candidates are not ancestors of existing heads, we don't
# have to examine ancestors of existing heads
if ctxisnew:
iterrevs = sorted(newheadrevs)
else:
iterrevs = list(bheadrevs)
# This loop prunes out two kinds of heads - heads that are
# superceded by a head in newheadrevs, and newheadrevs that are not
# heads because an existing head is their descendant.
while iterrevs:
latest = iterrevs.pop()
if latest not in bheadrevs:
continue
ancestors = set(self.changelog.ancestors([latest],
bheadrevs[0]))
if ancestors:
bheadrevs = [b for b in bheadrevs if b not in ancestors]
partial[branch] = [self.changelog.node(rev) for rev in bheadrevs]
# There may be branches that cease to exist when the last commit in the
# branch was stripped. This code filters them out. Note that the
# branch that ceased to exist may not be in newbranches because
# newbranches is the set of candidate heads, which when you strip the
# last commit in a branch will be the parent branch.
for branch in partial.keys():
nodes = [head for head in partial[branch]
if self.changelog.hasnode(head)]
if not nodes:
del partial[branch]
def lookup(self, key):
return self[key].node()
def lookupbranch(self, key, remote=None):
repo = remote or self
if key in repo.branchmap():
return key
repo = (remote and remote.local()) and remote or self
return repo[key].branch()
def known(self, nodes):
nm = self.changelog.nodemap
pc = self._phasecache
result = []
for n in nodes:
r = nm.get(n)
resp = not (r is None or pc.phase(self, r) >= phases.secret)
result.append(resp)
return result
def local(self):
return self
def cancopy(self):
return self.local() # so statichttprepo's override of local() works
def join(self, f):
return os.path.join(self.path, f)
def wjoin(self, f):
return os.path.join(self.root, f)
def file(self, f):
if f[0] == '/':
f = f[1:]
return filelog.filelog(self.sopener, f)
def changectx(self, changeid):
return self[changeid]
def parents(self, changeid=None):
'''get list of changectxs for parents of changeid'''
return self[changeid].parents()
def setparents(self, p1, p2=nullid):
copies = self.dirstate.setparents(p1, p2)
if copies:
# Adjust copy records, the dirstate cannot do it, it
# requires access to parents manifests. Preserve them
# only for entries added to first parent.
pctx = self[p1]
for f in copies:
if f not in pctx and copies[f] in pctx:
self.dirstate.copy(copies[f], f)
def filectx(self, path, changeid=None, fileid=None):
"""changeid can be a changeset revision, node, or tag.
fileid can be a file revision or node."""
return context.filectx(self, path, changeid, fileid)
def getcwd(self):
return self.dirstate.getcwd()
def pathto(self, f, cwd=None):
return self.dirstate.pathto(f, cwd)
def wfile(self, f, mode='r'):
return self.wopener(f, mode)
def _link(self, f):
return os.path.islink(self.wjoin(f))
def _loadfilter(self, filter):
if filter not in self.filterpats:
l = []
for pat, cmd in self.ui.configitems(filter):
if cmd == '!':
continue
mf = matchmod.match(self.root, '', [pat])
fn = None
params = cmd
for name, filterfn in self._datafilters.iteritems():
if cmd.startswith(name):
fn = filterfn
params = cmd[len(name):].lstrip()
break
if not fn:
fn = lambda s, c, **kwargs: util.filter(s, c)
# Wrap old filters not supporting keyword arguments
if not inspect.getargspec(fn)[2]:
oldfn = fn
fn = lambda s, c, **kwargs: oldfn(s, c)
l.append((mf, fn, params))
self.filterpats[filter] = l
return self.filterpats[filter]
def _filter(self, filterpats, filename, data):
for mf, fn, cmd in filterpats:
if mf(filename):
self.ui.debug("filtering %s through %s\n" % (filename, cmd))
data = fn(data, cmd, ui=self.ui, repo=self, filename=filename)
break
return data
@propertycache
def _encodefilterpats(self):
return self._loadfilter('encode')
@propertycache
def _decodefilterpats(self):
return self._loadfilter('decode')
def adddatafilter(self, name, filter):
self._datafilters[name] = filter
def wread(self, filename):
if self._link(filename):
data = os.readlink(self.wjoin(filename))
else:
data = self.wopener.read(filename)
return self._filter(self._encodefilterpats, filename, data)
def wwrite(self, filename, data, flags):
data = self._filter(self._decodefilterpats, filename, data)
if 'l' in flags:
self.wopener.symlink(data, filename)
else:
self.wopener.write(filename, data)
if 'x' in flags:
util.setflags(self.wjoin(filename), False, True)
def wwritedata(self, filename, data):
return self._filter(self._decodefilterpats, filename, data)
def transaction(self, desc):
tr = self._transref and self._transref() or None
if tr and tr.running():
return tr.nest()
# abort here if the journal already exists
if os.path.exists(self.sjoin("journal")):
raise error.RepoError(
_("abandoned transaction found - run hg recover"))
self._writejournal(desc)
renames = [(x, undoname(x)) for x in self._journalfiles()]
tr = transaction.transaction(self.ui.warn, self.sopener,
self.sjoin("journal"),
aftertrans(renames),
self.store.createmode)
self._transref = weakref.ref(tr)
return tr
def _journalfiles(self):
return (self.sjoin('journal'), self.join('journal.dirstate'),
self.join('journal.branch'), self.join('journal.desc'),
self.join('journal.bookmarks'),
self.sjoin('journal.phaseroots'))
def undofiles(self):
return [undoname(x) for x in self._journalfiles()]
def _writejournal(self, desc):
self.opener.write("journal.dirstate",
self.opener.tryread("dirstate"))
self.opener.write("journal.branch",
encoding.fromlocal(self.dirstate.branch()))
self.opener.write("journal.desc",
"%d\n%s\n" % (len(self), desc))
self.opener.write("journal.bookmarks",
self.opener.tryread("bookmarks"))
self.sopener.write("journal.phaseroots",
self.sopener.tryread("phaseroots"))
def recover(self):
lock = self.lock()
try:
if os.path.exists(self.sjoin("journal")):
self.ui.status(_("rolling back interrupted transaction\n"))
transaction.rollback(self.sopener, self.sjoin("journal"),
self.ui.warn)
self.invalidate()
return True
else:
self.ui.warn(_("no interrupted transaction available\n"))
return False
finally:
lock.release()
def rollback(self, dryrun=False, force=False):
wlock = lock = None
try:
wlock = self.wlock()
lock = self.lock()
if os.path.exists(self.sjoin("undo")):
return self._rollback(dryrun, force)
else:
self.ui.warn(_("no rollback information available\n"))
return 1
finally:
release(lock, wlock)
def _rollback(self, dryrun, force):
ui = self.ui
try:
args = self.opener.read('undo.desc').splitlines()
(oldlen, desc, detail) = (int(args[0]), args[1], None)
if len(args) >= 3:
detail = args[2]
oldtip = oldlen - 1
if detail and ui.verbose:
msg = (_('repository tip rolled back to revision %s'
' (undo %s: %s)\n')
% (oldtip, desc, detail))
else:
msg = (_('repository tip rolled back to revision %s'
' (undo %s)\n')
% (oldtip, desc))
except IOError:
msg = _('rolling back unknown transaction\n')
desc = None
if not force and self['.'] != self['tip'] and desc == 'commit':
raise util.Abort(
_('rollback of last commit while not checked out '
'may lose data'), hint=_('use -f to force'))
ui.status(msg)
if dryrun:
return 0
parents = self.dirstate.parents()
transaction.rollback(self.sopener, self.sjoin('undo'), ui.warn)
if os.path.exists(self.join('undo.bookmarks')):
util.rename(self.join('undo.bookmarks'),
self.join('bookmarks'))
if os.path.exists(self.sjoin('undo.phaseroots')):
util.rename(self.sjoin('undo.phaseroots'),
self.sjoin('phaseroots'))
self.invalidate()
# Discard all cache entries to force reloading everything.
self._filecache.clear()
parentgone = (parents[0] not in self.changelog.nodemap or
parents[1] not in self.changelog.nodemap)
if parentgone:
util.rename(self.join('undo.dirstate'), self.join('dirstate'))
try:
branch = self.opener.read('undo.branch')
self.dirstate.setbranch(encoding.tolocal(branch))
except IOError:
ui.warn(_('named branch could not be reset: '
'current branch is still \'%s\'\n')
% self.dirstate.branch())
self.dirstate.invalidate()
parents = tuple([p.rev() for p in self.parents()])
if len(parents) > 1:
ui.status(_('working directory now based on '
'revisions %d and %d\n') % parents)
else:
ui.status(_('working directory now based on '
'revision %d\n') % parents)
# TODO: if we know which new heads may result from this rollback, pass
# them to destroy(), which will prevent the branchhead cache from being
# invalidated.
self.destroyed()
return 0
def invalidatecaches(self):
def delcache(name):
try:
delattr(self, name)
except AttributeError:
pass
delcache('_tagscache')
self._branchcache = None # in UTF-8
self._branchcachetip = None
def invalidatedirstate(self):
'''Invalidates the dirstate, causing the next call to dirstate
to check if it was modified since the last time it was read,
rereading it if it has.
This is different to dirstate.invalidate() that it doesn't always
rereads the dirstate. Use dirstate.invalidate() if you want to
explicitly read the dirstate again (i.e. restoring it to a previous
known good state).'''
if 'dirstate' in self.__dict__:
for k in self.dirstate._filecache:
try:
delattr(self.dirstate, k)
except AttributeError:
pass
delattr(self, 'dirstate')
def invalidate(self):
for k in self._filecache:
# dirstate is invalidated separately in invalidatedirstate()
if k == 'dirstate':
continue
try:
delattr(self, k)
except AttributeError:
pass
self.invalidatecaches()
def _lock(self, lockname, wait, releasefn, acquirefn, desc):
try:
l = lock.lock(lockname, 0, releasefn, desc=desc)
except error.LockHeld, inst:
if not wait:
raise
self.ui.warn(_("waiting for lock on %s held by %r\n") %
(desc, inst.locker))
# default to 600 seconds timeout
l = lock.lock(lockname, int(self.ui.config("ui", "timeout", "600")),
releasefn, desc=desc)
if acquirefn:
acquirefn()
return l
def _afterlock(self, callback):
"""add a callback to the current repository lock.
The callback will be executed on lock release."""
l = self._lockref and self._lockref()
if l:
l.postrelease.append(callback)
else:
callback()
def lock(self, wait=True):
'''Lock the repository store (.hg/store) and return a weak reference
to the lock. Use this before modifying the store (e.g. committing or
stripping). If you are opening a transaction, get a lock as well.)'''
l = self._lockref and self._lockref()
if l is not None and l.held:
l.lock()
return l
def unlock():
self.store.write()
if '_phasecache' in vars(self):
self._phasecache.write()
for k, ce in self._filecache.items():
if k == 'dirstate':
continue
ce.refresh()
l = self._lock(self.sjoin("lock"), wait, unlock,
self.invalidate, _('repository %s') % self.origroot)
self._lockref = weakref.ref(l)
return l
def wlock(self, wait=True):
'''Lock the non-store parts of the repository (everything under
.hg except .hg/store) and return a weak reference to the lock.
Use this before modifying files in .hg.'''
l = self._wlockref and self._wlockref()
if l is not None and l.held:
l.lock()
return l
def unlock():
self.dirstate.write()
ce = self._filecache.get('dirstate')
if ce:
ce.refresh()
l = self._lock(self.join("wlock"), wait, unlock,
self.invalidatedirstate, _('working directory of %s') %
self.origroot)
self._wlockref = weakref.ref(l)
return l
def _filecommit(self, fctx, manifest1, manifest2, linkrev, tr, changelist):
"""
commit an individual file as part of a larger transaction
"""
fname = fctx.path()
text = fctx.data()
flog = self.file(fname)
fparent1 = manifest1.get(fname, nullid)
fparent2 = fparent2o = manifest2.get(fname, nullid)
meta = {}
copy = fctx.renamed()
if copy and copy[0] != fname:
# Mark the new revision of this file as a copy of another
# file. This copy data will effectively act as a parent
# of this new revision. If this is a merge, the first
# parent will be the nullid (meaning "look up the copy data")
# and the second one will be the other parent. For example:
#
# 0 --- 1 --- 3 rev1 changes file foo
# \ / rev2 renames foo to bar and changes it
# \- 2 -/ rev3 should have bar with all changes and
# should record that bar descends from
# bar in rev2 and foo in rev1
#
# this allows this merge to succeed:
#
# 0 --- 1 --- 3 rev4 reverts the content change from rev2
# \ / merging rev3 and rev4 should use bar@rev2
# \- 2 --- 4 as the merge base
#
cfname = copy[0]
crev = manifest1.get(cfname)
newfparent = fparent2
if manifest2: # branch merge
if fparent2 == nullid or crev is None: # copied on remote side
if cfname in manifest2:
crev = manifest2[cfname]
newfparent = fparent1
# find source in nearest ancestor if we've lost track
if not crev:
self.ui.debug(" %s: searching for copy revision for %s\n" %
(fname, cfname))
for ancestor in self[None].ancestors():
if cfname in ancestor:
crev = ancestor[cfname].filenode()
break
if crev:
self.ui.debug(" %s: copy %s:%s\n" % (fname, cfname, hex(crev)))
meta["copy"] = cfname
meta["copyrev"] = hex(crev)
fparent1, fparent2 = nullid, newfparent
else:
self.ui.warn(_("warning: can't find ancestor for '%s' "
"copied from '%s'!\n") % (fname, cfname))
elif fparent2 != nullid:
# is one parent an ancestor of the other?
fparentancestor = flog.ancestor(fparent1, fparent2)
if fparentancestor == fparent1:
fparent1, fparent2 = fparent2, nullid
elif fparentancestor == fparent2:
fparent2 = nullid
# is the file changed?
if fparent2 != nullid or flog.cmp(fparent1, text) or meta:
changelist.append(fname)
return flog.add(text, meta, tr, linkrev, fparent1, fparent2)
# are just the flags changed during merge?
if fparent1 != fparent2o and manifest1.flags(fname) != fctx.flags():
changelist.append(fname)
return fparent1
def commit(self, text="", user=None, date=None, match=None, force=False,
editor=False, extra={}):
"""Add a new revision to current repository.
Revision information is gathered from the working directory,
match can be used to filter the committed files. If editor is
supplied, it is called to get a commit message.
"""
def fail(f, msg):
raise util.Abort('%s: %s' % (f, msg))
if not match:
match = matchmod.always(self.root, '')
if not force:
vdirs = []
match.dir = vdirs.append
match.bad = fail
wlock = self.wlock()
try:
wctx = self[None]
merge = len(wctx.parents()) > 1
if (not force and merge and match and
(match.files() or match.anypats())):
raise util.Abort(_('cannot partially commit a merge '
'(do not specify files or patterns)'))
changes = self.status(match=match, clean=force)
if force:
changes[0].extend(changes[6]) # mq may commit unchanged files
# check subrepos
subs = []
commitsubs = set()
newstate = wctx.substate.copy()
# only manage subrepos and .hgsubstate if .hgsub is present
if '.hgsub' in wctx:
# we'll decide whether to track this ourselves, thanks
if '.hgsubstate' in changes[0]:
changes[0].remove('.hgsubstate')
if '.hgsubstate' in changes[2]:
changes[2].remove('.hgsubstate')
# compare current state to last committed state
# build new substate based on last committed state
oldstate = wctx.p1().substate
for s in sorted(newstate.keys()):
if not match(s):
# ignore working copy, use old state if present
if s in oldstate:
newstate[s] = oldstate[s]
continue
if not force:
raise util.Abort(
_("commit with new subrepo %s excluded") % s)
if wctx.sub(s).dirty(True):
if not self.ui.configbool('ui', 'commitsubrepos'):
raise util.Abort(
_("uncommitted changes in subrepo %s") % s,
hint=_("use --subrepos for recursive commit"))
subs.append(s)
commitsubs.add(s)
else:
bs = wctx.sub(s).basestate()
newstate[s] = (newstate[s][0], bs, newstate[s][2])
if oldstate.get(s, (None, None, None))[1] != bs:
subs.append(s)
# check for removed subrepos
for p in wctx.parents():
r = [s for s in p.substate if s not in newstate]
subs += [s for s in r if match(s)]
if subs:
if (not match('.hgsub') and
'.hgsub' in (wctx.modified() + wctx.added())):
raise util.Abort(
_("can't commit subrepos without .hgsub"))
changes[0].insert(0, '.hgsubstate')
elif '.hgsub' in changes[2]:
# clean up .hgsubstate when .hgsub is removed
if ('.hgsubstate' in wctx and
'.hgsubstate' not in changes[0] + changes[1] + changes[2]):
changes[2].insert(0, '.hgsubstate')
# make sure all explicit patterns are matched
if not force and match.files():
matched = set(changes[0] + changes[1] + changes[2])
for f in match.files():
if f == '.' or f in matched or f in wctx.substate:
continue
if f in changes[3]: # missing
fail(f, _('file not found!'))
if f in vdirs: # visited directory
d = f + '/'
for mf in matched:
if mf.startswith(d):
break
else:
fail(f, _("no match under directory!"))
elif f not in self.dirstate:
fail(f, _("file not tracked!"))
if (not force and not extra.get("close") and not merge
and not (changes[0] or changes[1] or changes[2])
and wctx.branch() == wctx.p1().branch()):
return None
if merge and changes[3]:
raise util.Abort(_("cannot commit merge with missing files"))
ms = mergemod.mergestate(self)
for f in changes[0]:
if f in ms and ms[f] == 'u':
raise util.Abort(_("unresolved merge conflicts "
"(see hg help resolve)"))
cctx = context.workingctx(self, text, user, date, extra, changes)
if editor:
cctx._text = editor(self, cctx, subs)
edited = (text != cctx._text)
# commit subs and write new state
if subs:
for s in sorted(commitsubs):
sub = wctx.sub(s)
self.ui.status(_('committing subrepository %s\n') %
subrepo.subrelpath(sub))
sr = sub.commit(cctx._text, user, date)
newstate[s] = (newstate[s][0], sr)
subrepo.writestate(self, newstate)
# Save commit message in case this transaction gets rolled back
# (e.g. by a pretxncommit hook). Leave the content alone on
# the assumption that the user will use the same editor again.
msgfn = self.savecommitmessage(cctx._text)
p1, p2 = self.dirstate.parents()
hookp1, hookp2 = hex(p1), (p2 != nullid and hex(p2) or '')
try:
self.hook("precommit", throw=True, parent1=hookp1,
parent2=hookp2)
ret = self.commitctx(cctx, True)
except: # re-raises
if edited:
self.ui.write(
_('note: commit message saved in %s\n') % msgfn)
raise
# update bookmarks, dirstate and mergestate
bookmarks.update(self, [p1, p2], ret)
for f in changes[0] + changes[1]:
self.dirstate.normal(f)
for f in changes[2]:
self.dirstate.drop(f)
self.dirstate.setparents(ret)
ms.reset()
finally:
wlock.release()
def commithook(node=hex(ret), parent1=hookp1, parent2=hookp2):
self.hook("commit", node=node, parent1=parent1, parent2=parent2)
self._afterlock(commithook)
return ret
def commitctx(self, ctx, error=False):
"""Add a new revision to current repository.
Revision information is passed via the context argument.
"""
tr = lock = None
removed = list(ctx.removed())
p1, p2 = ctx.p1(), ctx.p2()
user = ctx.user()
lock = self.lock()
try:
tr = self.transaction("commit")
trp = weakref.proxy(tr)
if ctx.files():
m1 = p1.manifest().copy()
m2 = p2.manifest()
# check in files
new = {}
changed = []
linkrev = len(self)
for f in sorted(ctx.modified() + ctx.added()):
self.ui.note(f + "\n")
try:
fctx = ctx[f]
new[f] = self._filecommit(fctx, m1, m2, linkrev, trp,
changed)
m1.set(f, fctx.flags())
except OSError, inst:
self.ui.warn(_("trouble committing %s!\n") % f)
raise
except IOError, inst:
errcode = getattr(inst, 'errno', errno.ENOENT)
if error or errcode and errcode != errno.ENOENT:
self.ui.warn(_("trouble committing %s!\n") % f)
raise
else:
removed.append(f)
# update manifest
m1.update(new)
removed = [f for f in sorted(removed) if f in m1 or f in m2]
drop = [f for f in removed if f in m1]
for f in drop:
del m1[f]
mn = self.manifest.add(m1, trp, linkrev, p1.manifestnode(),
p2.manifestnode(), (new, drop))
files = changed + removed
else:
mn = p1.manifestnode()
files = []
# update changelog
self.changelog.delayupdate()
n = self.changelog.add(mn, files, ctx.description(),
trp, p1.node(), p2.node(),
user, ctx.date(), ctx.extra().copy())
p = lambda: self.changelog.writepending() and self.root or ""
xp1, xp2 = p1.hex(), p2 and p2.hex() or ''
self.hook('pretxncommit', throw=True, node=hex(n), parent1=xp1,
parent2=xp2, pending=p)
self.changelog.finalize(trp)
# set the new commit is proper phase
targetphase = phases.newcommitphase(self.ui)
if targetphase:
# retract boundary do not alter parent changeset.
# if a parent have higher the resulting phase will
# be compliant anyway
#
# if minimal phase was 0 we don't need to retract anything
phases.retractboundary(self, targetphase, [n])
tr.close()
self.updatebranchcache()
return n
finally:
if tr:
tr.release()
lock.release()
def destroyed(self, newheadnodes=None):
'''Inform the repository that nodes have been destroyed.
Intended for use by strip and rollback, so there's a common
place for anything that has to be done after destroying history.
If you know the branchheadcache was uptodate before nodes were removed
and you also know the set of candidate new heads that may have resulted
from the destruction, you can set newheadnodes. This will enable the
code to update the branchheads cache, rather than having future code
decide it's invalid and regenrating it from scratch.
'''
# If we have info, newheadnodes, on how to update the branch cache, do
# it, Otherwise, since nodes were destroyed, the cache is stale and this
# will be caught the next time it is read.
if newheadnodes:
tiprev = len(self) - 1
ctxgen = (self[node] for node in newheadnodes
if self.changelog.hasnode(node))
self._updatebranchcache(self._branchcache, ctxgen)
self._writebranchcache(self._branchcache, self.changelog.tip(),
tiprev)
# Ensure the persistent tag cache is updated. Doing it now
# means that the tag cache only has to worry about destroyed
# heads immediately after a strip/rollback. That in turn
# guarantees that "cachetip == currenttip" (comparing both rev
# and node) always means no nodes have been added or destroyed.
# XXX this is suboptimal when qrefresh'ing: we strip the current
# head, refresh the tag cache, then immediately add a new head.
# But I think doing it this way is necessary for the "instant
# tag cache retrieval" case to work.
self.invalidatecaches()
# Discard all cache entries to force reloading everything.
self._filecache.clear()
def walk(self, match, node=None):
'''
walk recursively through the directory tree or a given
changeset, finding all files matched by the match
function
'''
return self[node].walk(match)
def status(self, node1='.', node2=None, match=None,
ignored=False, clean=False, unknown=False,
listsubrepos=False):
"""return status of files between two nodes or node and working
directory.
If node1 is None, use the first dirstate parent instead.
If node2 is None, compare node1 with working directory.
"""
def mfmatches(ctx):
mf = ctx.manifest().copy()
if match.always():
return mf
for fn in mf.keys():
if not match(fn):
del mf[fn]
return mf
if isinstance(node1, context.changectx):
ctx1 = node1
else:
ctx1 = self[node1]
if isinstance(node2, context.changectx):
ctx2 = node2
else:
ctx2 = self[node2]
working = ctx2.rev() is None
parentworking = working and ctx1 == self['.']
match = match or matchmod.always(self.root, self.getcwd())
listignored, listclean, listunknown = ignored, clean, unknown
# load earliest manifest first for caching reasons
if not working and ctx2.rev() < ctx1.rev():
ctx2.manifest()
if not parentworking:
def bad(f, msg):
# 'f' may be a directory pattern from 'match.files()',
# so 'f not in ctx1' is not enough
if f not in ctx1 and f not in ctx1.dirs():
self.ui.warn('%s: %s\n' % (self.dirstate.pathto(f), msg))
match.bad = bad
if working: # we need to scan the working dir
subrepos = []
if '.hgsub' in self.dirstate:
subrepos = ctx2.substate.keys()
s = self.dirstate.status(match, subrepos, listignored,
listclean, listunknown)
cmp, modified, added, removed, deleted, unknown, ignored, clean = s
# check for any possibly clean files
if parentworking and cmp:
fixup = []
# do a full compare of any files that might have changed
for f in sorted(cmp):
if (f not in ctx1 or ctx2.flags(f) != ctx1.flags(f)
or ctx1[f].cmp(ctx2[f])):
modified.append(f)
else:
fixup.append(f)
# update dirstate for files that are actually clean
if fixup:
if listclean:
clean += fixup
try:
# updating the dirstate is optional
# so we don't wait on the lock
wlock = self.wlock(False)
try:
for f in fixup:
self.dirstate.normal(f)
finally:
wlock.release()
except error.LockError:
pass
if not parentworking:
mf1 = mfmatches(ctx1)
if working:
# we are comparing working dir against non-parent
# generate a pseudo-manifest for the working dir
mf2 = mfmatches(self['.'])
for f in cmp + modified + added:
mf2[f] = None
mf2.set(f, ctx2.flags(f))
for f in removed:
if f in mf2:
del mf2[f]
else:
# we are comparing two revisions
deleted, unknown, ignored = [], [], []
mf2 = mfmatches(ctx2)
modified, added, clean = [], [], []
withflags = mf1.withflags() | mf2.withflags()
for fn in mf2:
if fn in mf1:
if (fn not in deleted and
((fn in withflags and mf1.flags(fn) != mf2.flags(fn)) or
(mf1[fn] != mf2[fn] and
(mf2[fn] or ctx1[fn].cmp(ctx2[fn]))))):
modified.append(fn)
elif listclean:
clean.append(fn)
del mf1[fn]
elif fn not in deleted:
added.append(fn)
removed = mf1.keys()
if working and modified and not self.dirstate._checklink:
# Symlink placeholders may get non-symlink-like contents
# via user error or dereferencing by NFS or Samba servers,
# so we filter out any placeholders that don't look like a
# symlink
sane = []
for f in modified:
if ctx2.flags(f) == 'l':
d = ctx2[f].data()
if len(d) >= 1024 or '\n' in d or util.binary(d):
self.ui.debug('ignoring suspect symlink placeholder'
' "%s"\n' % f)
continue
sane.append(f)
modified = sane
r = modified, added, removed, deleted, unknown, ignored, clean
if listsubrepos:
for subpath, sub in subrepo.itersubrepos(ctx1, ctx2):
if working:
rev2 = None
else:
rev2 = ctx2.substate[subpath][1]
try:
submatch = matchmod.narrowmatcher(subpath, match)
s = sub.status(rev2, match=submatch, ignored=listignored,
clean=listclean, unknown=listunknown,
listsubrepos=True)
for rfiles, sfiles in zip(r, s):
rfiles.extend("%s/%s" % (subpath, f) for f in sfiles)
except error.LookupError:
self.ui.status(_("skipping missing subrepository: %s\n")
% subpath)
for l in r:
l.sort()
return r
def heads(self, start=None):
heads = self.changelog.heads(start)
# sort the output in rev descending order
return sorted(heads, key=self.changelog.rev, reverse=True)
def branchheads(self, branch=None, start=None, closed=False):
'''return a (possibly filtered) list of heads for the given branch
Heads are returned in topological order, from newest to oldest.
If branch is None, use the dirstate branch.
If start is not None, return only heads reachable from start.
If closed is True, return heads that are marked as closed as well.
'''
if branch is None:
branch = self[None].branch()
branches = self.branchmap()
if branch not in branches:
return []
# the cache returns heads ordered lowest to highest
bheads = list(reversed(branches[branch]))
if start is not None:
# filter out the heads that cannot be reached from startrev
fbheads = set(self.changelog.nodesbetween([start], bheads)[2])
bheads = [h for h in bheads if h in fbheads]
if not closed:
bheads = [h for h in bheads if not self[h].closesbranch()]
return bheads
def branches(self, nodes):
if not nodes:
nodes = [self.changelog.tip()]
b = []
for n in nodes:
t = n
while True:
p = self.changelog.parents(n)
if p[1] != nullid or p[0] == nullid:
b.append((t, n, p[0], p[1]))
break
n = p[0]
return b
def between(self, pairs):
r = []
for top, bottom in pairs:
n, l, i = top, [], 0
f = 1
while n != bottom and n != nullid:
p = self.changelog.parents(n)[0]
if i == f:
l.append(n)
f = f * 2
n = p
i += 1
r.append(l)
return r
def pull(self, remote, heads=None, force=False):
# don't open transaction for nothing or you break future useful
# rollback call
tr = None
trname = 'pull\n' + util.hidepassword(remote.url())
lock = self.lock()
try:
tmp = discovery.findcommonincoming(self, remote, heads=heads,
force=force)
common, fetch, rheads = tmp
if not fetch:
self.ui.status(_("no changes found\n"))
added = []
result = 0
else:
tr = self.transaction(trname)
if heads is None and list(common) == [nullid]:
self.ui.status(_("requesting all changes\n"))
elif heads is None and remote.capable('changegroupsubset'):
# issue1320, avoid a race if remote changed after discovery
heads = rheads
if remote.capable('getbundle'):
cg = remote.getbundle('pull', common=common,
heads=heads or rheads)
elif heads is None:
cg = remote.changegroup(fetch, 'pull')
elif not remote.capable('changegroupsubset'):
raise util.Abort(_("partial pull cannot be done because "
"other repository doesn't support "
"changegroupsubset."))
else:
cg = remote.changegroupsubset(fetch, heads, 'pull')
clstart = len(self.changelog)
result = self.addchangegroup(cg, 'pull', remote.url())
clend = len(self.changelog)
added = [self.changelog.node(r) for r in xrange(clstart, clend)]
# compute target subset
if heads is None:
# We pulled every thing possible
# sync on everything common
subset = common + added
else:
# We pulled a specific subset
# sync on this subset
subset = heads
# Get remote phases data from remote
remotephases = remote.listkeys('phases')
publishing = bool(remotephases.get('publishing', False))
if remotephases and not publishing:
# remote is new and unpublishing
pheads, _dr = phases.analyzeremotephases(self, subset,
remotephases)
phases.advanceboundary(self, phases.public, pheads)
phases.advanceboundary(self, phases.draft, subset)
else:
# Remote is old or publishing all common changesets
# should be seen as public
phases.advanceboundary(self, phases.public, subset)
if obsolete._enabled:
self.ui.debug('fetching remote obsolete markers')
remoteobs = remote.listkeys('obsolete')
if 'dump0' in remoteobs:
if tr is None:
tr = self.transaction(trname)
for key in sorted(remoteobs, reverse=True):
if key.startswith('dump'):
data = base85.b85decode(remoteobs[key])
self.obsstore.mergemarkers(tr, data)
if tr is not None:
tr.close()
finally:
if tr is not None:
tr.release()
lock.release()
return result
def checkpush(self, force, revs):
"""Extensions can override this function if additional checks have
to be performed before pushing, or call it if they override push
command.
"""
pass
def push(self, remote, force=False, revs=None, newbranch=False):
'''Push outgoing changesets (limited by revs) from the current
repository to remote. Return an integer:
- None means nothing to push
- 0 means HTTP error
- 1 means we pushed and remote head count is unchanged *or*
we have outgoing changesets but refused to push
- other values as described by addchangegroup()
'''
# there are two ways to push to remote repo:
#
# addchangegroup assumes local user can lock remote
# repo (local filesystem, old ssh servers).
#
# unbundle assumes local user cannot lock remote repo (new ssh
# servers, http servers).
if not remote.canpush():
raise util.Abort(_("destination does not support push"))
# get local lock as we might write phase data
locallock = self.lock()
try:
self.checkpush(force, revs)
lock = None
unbundle = remote.capable('unbundle')
if not unbundle:
lock = remote.lock()
try:
# discovery
fci = discovery.findcommonincoming
commoninc = fci(self, remote, force=force)
common, inc, remoteheads = commoninc
fco = discovery.findcommonoutgoing
outgoing = fco(self, remote, onlyheads=revs,
commoninc=commoninc, force=force)
if not outgoing.missing:
# nothing to push
scmutil.nochangesfound(self.ui, self, outgoing.excluded)
ret = None
else:
# something to push
if not force:
# if self.obsstore == False --> no obsolete
# then, save the iteration
if self.obsstore:
# this message are here for 80 char limit reason
mso = _("push includes an obsolete changeset: %s!")
msu = _("push includes an unstable changeset: %s!")
# If we are to push if there is at least one
# obsolete or unstable changeset in missing, at
# least one of the missinghead will be obsolete or
# unstable. So checking heads only is ok
for node in outgoing.missingheads:
ctx = self[node]
if ctx.obsolete():
raise util.Abort(_(mso) % ctx)
elif ctx.unstable():
raise util.Abort(_(msu) % ctx)
discovery.checkheads(self, remote, outgoing,
remoteheads, newbranch,
bool(inc))
# create a changegroup from local
if revs is None and not outgoing.excluded:
# push everything,
# use the fast path, no race possible on push
cg = self._changegroup(outgoing.missing, 'push')
else:
cg = self.getlocalbundle('push', outgoing)
# apply changegroup to remote
if unbundle:
# local repo finds heads on server, finds out what
# revs it must push. once revs transferred, if server
# finds it has different heads (someone else won
# commit/push race), server aborts.
if force:
remoteheads = ['force']
# ssh: return remote's addchangegroup()
# http: return remote's addchangegroup() or 0 for error
ret = remote.unbundle(cg, remoteheads, 'push')
else:
# we return an integer indicating remote head count
# change
ret = remote.addchangegroup(cg, 'push', self.url())
if ret:
# push succeed, synchonize target of the push
cheads = outgoing.missingheads
elif revs is None:
# All out push fails. synchronize all common
cheads = outgoing.commonheads
else:
# I want cheads = heads(::missingheads and ::commonheads)
# (missingheads is revs with secret changeset filtered out)
#
# This can be expressed as:
# cheads = ( (missingheads and ::commonheads)
# + (commonheads and ::missingheads))"
# )
#
# while trying to push we already computed the following:
# common = (::commonheads)
# missing = ((commonheads::missingheads) - commonheads)
#
# We can pick:
# * missingheads part of comon (::commonheads)
common = set(outgoing.common)
cheads = [node for node in revs if node in common]
# and
# * commonheads parents on missing
revset = self.set('%ln and parents(roots(%ln))',
outgoing.commonheads,
outgoing.missing)
cheads.extend(c.node() for c in revset)
# even when we don't push, exchanging phase data is useful
remotephases = remote.listkeys('phases')
if not remotephases: # old server or public only repo
phases.advanceboundary(self, phases.public, cheads)
# don't push any phase data as there is nothing to push
else:
ana = phases.analyzeremotephases(self, cheads, remotephases)
pheads, droots = ana
### Apply remote phase on local
if remotephases.get('publishing', False):
phases.advanceboundary(self, phases.public, cheads)
else: # publish = False
phases.advanceboundary(self, phases.public, pheads)
phases.advanceboundary(self, phases.draft, cheads)
### Apply local phase on remote
# Get the list of all revs draft on remote by public here.
# XXX Beware that revset break if droots is not strictly
# XXX root we may want to ensure it is but it is costly
outdated = self.set('heads((%ln::%ln) and public())',
droots, cheads)
for newremotehead in outdated:
r = remote.pushkey('phases',
newremotehead.hex(),
str(phases.draft),
str(phases.public))
if not r:
self.ui.warn(_('updating %s to public failed!\n')
% newremotehead)
self.ui.debug('try to push obsolete markers to remote\n')
if (obsolete._enabled and self.obsstore and
'obsolete' in remote.listkeys('namespaces')):
rslts = []
remotedata = self.listkeys('obsolete')
for key in sorted(remotedata, reverse=True):
# reverse sort to ensure we end with dump0
data = remotedata[key]
rslts.append(remote.pushkey('obsolete', key, '', data))
if [r for r in rslts if not r]:
msg = _('failed to push some obsolete markers!\n')
self.ui.warn(msg)
finally:
if lock is not None:
lock.release()
finally:
locallock.release()
self.ui.debug("checking for updated bookmarks\n")
rb = remote.listkeys('bookmarks')
for k in rb.keys():
if k in self._bookmarks:
nr, nl = rb[k], hex(self._bookmarks[k])
if nr in self:
cr = self[nr]
cl = self[nl]
if cl in cr.descendants():
r = remote.pushkey('bookmarks', k, nr, nl)
if r:
self.ui.status(_("updating bookmark %s\n") % k)
else:
self.ui.warn(_('updating bookmark %s'
' failed!\n') % k)
return ret
def changegroupinfo(self, nodes, source):
if self.ui.verbose or source == 'bundle':
self.ui.status(_("%d changesets found\n") % len(nodes))
if self.ui.debugflag:
self.ui.debug("list of changesets:\n")
for node in nodes:
self.ui.debug("%s\n" % hex(node))
def changegroupsubset(self, bases, heads, source):
"""Compute a changegroup consisting of all the nodes that are
descendants of any of the bases and ancestors of any of the heads.
Return a chunkbuffer object whose read() method will return
successive changegroup chunks.
It is fairly complex as determining which filenodes and which
manifest nodes need to be included for the changeset to be complete
is non-trivial.
Another wrinkle is doing the reverse, figuring out which changeset in
the changegroup a particular filenode or manifestnode belongs to.
"""
cl = self.changelog
if not bases:
bases = [nullid]
csets, bases, heads = cl.nodesbetween(bases, heads)
# We assume that all ancestors of bases are known
common = set(cl.ancestors([cl.rev(n) for n in bases]))
return self._changegroupsubset(common, csets, heads, source)
def getlocalbundle(self, source, outgoing):
"""Like getbundle, but taking a discovery.outgoing as an argument.
This is only implemented for local repos and reuses potentially
precomputed sets in outgoing."""
if not outgoing.missing:
return None
return self._changegroupsubset(outgoing.common,
outgoing.missing,
outgoing.missingheads,
source)
def getbundle(self, source, heads=None, common=None):
"""Like changegroupsubset, but returns the set difference between the
ancestors of heads and the ancestors common.
If heads is None, use the local heads. If common is None, use [nullid].
The nodes in common might not all be known locally due to the way the
current discovery protocol works.
"""
cl = self.changelog
if common:
nm = cl.nodemap
common = [n for n in common if n in nm]
else:
common = [nullid]
if not heads:
heads = cl.heads()
return self.getlocalbundle(source,
discovery.outgoing(cl, common, heads))
def _changegroupsubset(self, commonrevs, csets, heads, source):
cl = self.changelog
mf = self.manifest
mfs = {} # needed manifests
fnodes = {} # needed file nodes
changedfiles = set()
fstate = ['', {}]
count = [0, 0]
# can we go through the fast path ?
heads.sort()
if heads == sorted(self.heads()):
return self._changegroup(csets, source)
# slow path
self.hook('preoutgoing', throw=True, source=source)
self.changegroupinfo(csets, source)
# filter any nodes that claim to be part of the known set
def prune(revlog, missing):
rr, rl = revlog.rev, revlog.linkrev
return [n for n in missing
if rl(rr(n)) not in commonrevs]
progress = self.ui.progress
_bundling = _('bundling')
_changesets = _('changesets')
_manifests = _('manifests')
_files = _('files')
def lookup(revlog, x):
if revlog == cl:
c = cl.read(x)
changedfiles.update(c[3])
mfs.setdefault(c[0], x)
count[0] += 1
progress(_bundling, count[0],
unit=_changesets, total=count[1])
return x
elif revlog == mf:
clnode = mfs[x]
mdata = mf.readfast(x)
for f, n in mdata.iteritems():
if f in changedfiles:
fnodes[f].setdefault(n, clnode)
count[0] += 1
progress(_bundling, count[0],
unit=_manifests, total=count[1])
return clnode
else:
progress(_bundling, count[0], item=fstate[0],
unit=_files, total=count[1])
return fstate[1][x]
bundler = changegroup.bundle10(lookup)
reorder = self.ui.config('bundle', 'reorder', 'auto')
if reorder == 'auto':
reorder = None
else:
reorder = util.parsebool(reorder)
def gengroup():
# Create a changenode group generator that will call our functions
# back to lookup the owning changenode and collect information.
count[:] = [0, len(csets)]
for chunk in cl.group(csets, bundler, reorder=reorder):
yield chunk
progress(_bundling, None)
# Create a generator for the manifestnodes that calls our lookup
# and data collection functions back.
for f in changedfiles:
fnodes[f] = {}
count[:] = [0, len(mfs)]
for chunk in mf.group(prune(mf, mfs), bundler, reorder=reorder):
yield chunk
progress(_bundling, None)
mfs.clear()
# Go through all our files in order sorted by name.
count[:] = [0, len(changedfiles)]
for fname in sorted(changedfiles):
filerevlog = self.file(fname)
if not len(filerevlog):
raise util.Abort(_("empty or missing revlog for %s")
% fname)
fstate[0] = fname
fstate[1] = fnodes.pop(fname, {})
nodelist = prune(filerevlog, fstate[1])
if nodelist:
count[0] += 1
yield bundler.fileheader(fname)
for chunk in filerevlog.group(nodelist, bundler, reorder):
yield chunk
# Signal that no more groups are left.
yield bundler.close()
progress(_bundling, None)
if csets:
self.hook('outgoing', node=hex(csets[0]), source=source)
return changegroup.unbundle10(util.chunkbuffer(gengroup()), 'UN')
def changegroup(self, basenodes, source):
# to avoid a race we use changegroupsubset() (issue1320)
return self.changegroupsubset(basenodes, self.heads(), source)
def _changegroup(self, nodes, source):
"""Compute the changegroup of all nodes that we have that a recipient
doesn't. Return a chunkbuffer object whose read() method will return
successive changegroup chunks.
This is much easier than the previous function as we can assume that
the recipient has any changenode we aren't sending them.
nodes is the set of nodes to send"""
cl = self.changelog
mf = self.manifest
mfs = {}
changedfiles = set()
fstate = ['']
count = [0, 0]
self.hook('preoutgoing', throw=True, source=source)
self.changegroupinfo(nodes, source)
revset = set([cl.rev(n) for n in nodes])
def gennodelst(log):
ln, llr = log.node, log.linkrev
return [ln(r) for r in log if llr(r) in revset]
progress = self.ui.progress
_bundling = _('bundling')
_changesets = _('changesets')
_manifests = _('manifests')
_files = _('files')
def lookup(revlog, x):
if revlog == cl:
c = cl.read(x)
changedfiles.update(c[3])
mfs.setdefault(c[0], x)
count[0] += 1
progress(_bundling, count[0],
unit=_changesets, total=count[1])
return x
elif revlog == mf:
count[0] += 1
progress(_bundling, count[0],
unit=_manifests, total=count[1])
return cl.node(revlog.linkrev(revlog.rev(x)))
else:
progress(_bundling, count[0], item=fstate[0],
total=count[1], unit=_files)
return cl.node(revlog.linkrev(revlog.rev(x)))
bundler = changegroup.bundle10(lookup)
reorder = self.ui.config('bundle', 'reorder', 'auto')
if reorder == 'auto':
reorder = None
else:
reorder = util.parsebool(reorder)
def gengroup():
'''yield a sequence of changegroup chunks (strings)'''
# construct a list of all changed files
count[:] = [0, len(nodes)]
for chunk in cl.group(nodes, bundler, reorder=reorder):
yield chunk
progress(_bundling, None)
count[:] = [0, len(mfs)]
for chunk in mf.group(gennodelst(mf), bundler, reorder=reorder):
yield chunk
progress(_bundling, None)
count[:] = [0, len(changedfiles)]
for fname in sorted(changedfiles):
filerevlog = self.file(fname)
if not len(filerevlog):
raise util.Abort(_("empty or missing revlog for %s")
% fname)
fstate[0] = fname
nodelist = gennodelst(filerevlog)
if nodelist:
count[0] += 1
yield bundler.fileheader(fname)
for chunk in filerevlog.group(nodelist, bundler, reorder):
yield chunk
yield bundler.close()
progress(_bundling, None)
if nodes:
self.hook('outgoing', node=hex(nodes[0]), source=source)
return changegroup.unbundle10(util.chunkbuffer(gengroup()), 'UN')
def addchangegroup(self, source, srctype, url, emptyok=False):
"""Add the changegroup returned by source.read() to this repo.
srctype is a string like 'push', 'pull', or 'unbundle'. url is
the URL of the repo where this changegroup is coming from.
Return an integer summarizing the change to this repo:
- nothing changed or no source: 0
- more heads than before: 1+added heads (2..n)
- fewer heads than before: -1-removed heads (-2..-n)
- number of heads stays the same: 1
"""
def csmap(x):
self.ui.debug("add changeset %s\n" % short(x))
return len(cl)
def revmap(x):
return cl.rev(x)
if not source:
return 0
self.hook('prechangegroup', throw=True, source=srctype, url=url)
changesets = files = revisions = 0
efiles = set()
# write changelog data to temp files so concurrent readers will not see
# inconsistent view
cl = self.changelog
cl.delayupdate()
oldheads = cl.heads()
tr = self.transaction("\n".join([srctype, util.hidepassword(url)]))
try:
trp = weakref.proxy(tr)
# pull off the changeset group
self.ui.status(_("adding changesets\n"))
clstart = len(cl)
class prog(object):
step = _('changesets')
count = 1
ui = self.ui
total = None
def __call__(self):
self.ui.progress(self.step, self.count, unit=_('chunks'),
total=self.total)
self.count += 1
pr = prog()
source.callback = pr
source.changelogheader()
srccontent = cl.addgroup(source, csmap, trp)
if not (srccontent or emptyok):
raise util.Abort(_("received changelog group is empty"))
clend = len(cl)
changesets = clend - clstart
for c in xrange(clstart, clend):
efiles.update(self[c].files())
efiles = len(efiles)
self.ui.progress(_('changesets'), None)
# pull off the manifest group
self.ui.status(_("adding manifests\n"))
pr.step = _('manifests')
pr.count = 1
pr.total = changesets # manifests <= changesets
# no need to check for empty manifest group here:
# if the result of the merge of 1 and 2 is the same in 3 and 4,
# no new manifest will be created and the manifest group will
# be empty during the pull
source.manifestheader()
self.manifest.addgroup(source, revmap, trp)
self.ui.progress(_('manifests'), None)
needfiles = {}
if self.ui.configbool('server', 'validate', default=False):
# validate incoming csets have their manifests
for cset in xrange(clstart, clend):
mfest = self.changelog.read(self.changelog.node(cset))[0]
mfest = self.manifest.readdelta(mfest)
# store file nodes we must see
for f, n in mfest.iteritems():
needfiles.setdefault(f, set()).add(n)
# process the files
self.ui.status(_("adding file changes\n"))
pr.step = _('files')
pr.count = 1
pr.total = efiles
source.callback = None
while True:
chunkdata = source.filelogheader()
if not chunkdata:
break
f = chunkdata["filename"]
self.ui.debug("adding %s revisions\n" % f)
pr()
fl = self.file(f)
o = len(fl)
if not fl.addgroup(source, revmap, trp):
raise util.Abort(_("received file revlog group is empty"))
revisions += len(fl) - o
files += 1
if f in needfiles:
needs = needfiles[f]
for new in xrange(o, len(fl)):
n = fl.node(new)
if n in needs:
needs.remove(n)
if not needs:
del needfiles[f]
self.ui.progress(_('files'), None)
for f, needs in needfiles.iteritems():
fl = self.file(f)
for n in needs:
try:
fl.rev(n)
except error.LookupError:
raise util.Abort(
_('missing file data for %s:%s - run hg verify') %
(f, hex(n)))
dh = 0
if oldheads:
heads = cl.heads()
dh = len(heads) - len(oldheads)
for h in heads:
if h not in oldheads and self[h].closesbranch():
dh -= 1
htext = ""
if dh:
htext = _(" (%+d heads)") % dh
self.ui.status(_("added %d changesets"
" with %d changes to %d files%s\n")
% (changesets, revisions, files, htext))
if changesets > 0:
p = lambda: cl.writepending() and self.root or ""
self.hook('pretxnchangegroup', throw=True,
node=hex(cl.node(clstart)), source=srctype,
url=url, pending=p)
added = [cl.node(r) for r in xrange(clstart, clend)]
publishing = self.ui.configbool('phases', 'publish', True)
if srctype == 'push':
# Old server can not push the boundary themself.
# New server won't push the boundary if changeset already
# existed locally as secrete
#
# We should not use added here but the list of all change in
# the bundle
if publishing:
phases.advanceboundary(self, phases.public, srccontent)
else:
phases.advanceboundary(self, phases.draft, srccontent)
phases.retractboundary(self, phases.draft, added)
elif srctype != 'strip':
# publishing only alter behavior during push
#
# strip should not touch boundary at all
phases.retractboundary(self, phases.draft, added)
# make changelog see real files again
cl.finalize(trp)
tr.close()
if changesets > 0:
def runhooks():
# forcefully update the on-disk branch cache
self.ui.debug("updating the branch cache\n")
self.updatebranchcache()
self.hook("changegroup", node=hex(cl.node(clstart)),
source=srctype, url=url)
for n in added:
self.hook("incoming", node=hex(n), source=srctype,
url=url)
self._afterlock(runhooks)
finally:
tr.release()
# never return 0 here:
if dh < 0:
return dh - 1
else:
return dh + 1
def stream_in(self, remote, requirements):
lock = self.lock()
try:
fp = remote.stream_out()
l = fp.readline()
try:
resp = int(l)
except ValueError:
raise error.ResponseError(
_('unexpected response from remote server:'), l)
if resp == 1:
raise util.Abort(_('operation forbidden by server'))
elif resp == 2:
raise util.Abort(_('locking the remote repository failed'))
elif resp != 0:
raise util.Abort(_('the server sent an unknown error code'))
self.ui.status(_('streaming all changes\n'))
l = fp.readline()
try:
total_files, total_bytes = map(int, l.split(' ', 1))
except (ValueError, TypeError):
raise error.ResponseError(
_('unexpected response from remote server:'), l)
self.ui.status(_('%d files to transfer, %s of data\n') %
(total_files, util.bytecount(total_bytes)))
handled_bytes = 0
self.ui.progress(_('clone'), 0, total=total_bytes)
start = time.time()
for i in xrange(total_files):
# XXX doesn't support '\n' or '\r' in filenames
l = fp.readline()
try:
name, size = l.split('\0', 1)
size = int(size)
except (ValueError, TypeError):
raise error.ResponseError(
_('unexpected response from remote server:'), l)
if self.ui.debugflag:
self.ui.debug('adding %s (%s)\n' %
(name, util.bytecount(size)))
# for backwards compat, name was partially encoded
ofp = self.sopener(store.decodedir(name), 'w')
for chunk in util.filechunkiter(fp, limit=size):
handled_bytes += len(chunk)
self.ui.progress(_('clone'), handled_bytes,
total=total_bytes)
ofp.write(chunk)
ofp.close()
elapsed = time.time() - start
if elapsed <= 0:
elapsed = 0.001
self.ui.progress(_('clone'), None)
self.ui.status(_('transferred %s in %.1f seconds (%s/sec)\n') %
(util.bytecount(total_bytes), elapsed,
util.bytecount(total_bytes / elapsed)))
# new requirements = old non-format requirements +
# new format-related
# requirements from the streamed-in repository
requirements.update(set(self.requirements) - self.supportedformats)
self._applyrequirements(requirements)
self._writerequirements()
self.invalidate()
return len(self.heads()) + 1
finally:
lock.release()
def clone(self, remote, heads=[], stream=False):
'''clone remote repository.
keyword arguments:
heads: list of revs to clone (forces use of pull)
stream: use streaming clone if possible'''
# now, all clients that can request uncompressed clones can
# read repo formats supported by all servers that can serve
# them.
# if revlog format changes, client will have to check version
# and format flags on "stream" capability, and use
# uncompressed only if compatible.
if not stream:
# if the server explicitely prefer to stream (for fast LANs)
stream = remote.capable('stream-preferred')
if stream and not heads:
# 'stream' means remote revlog format is revlogv1 only
if remote.capable('stream'):
return self.stream_in(remote, set(('revlogv1',)))
# otherwise, 'streamreqs' contains the remote revlog format
streamreqs = remote.capable('streamreqs')
if streamreqs:
streamreqs = set(streamreqs.split(','))
# if we support it, stream in and adjust our requirements
if not streamreqs - self.supportedformats:
return self.stream_in(remote, streamreqs)
return self.pull(remote, heads)
def pushkey(self, namespace, key, old, new):
self.hook('prepushkey', throw=True, namespace=namespace, key=key,
old=old, new=new)
self.ui.debug('pushing key for "%s:%s"\n' % (namespace, key))
ret = pushkey.push(self, namespace, key, old, new)
self.hook('pushkey', namespace=namespace, key=key, old=old, new=new,
ret=ret)
return ret
def listkeys(self, namespace):
self.hook('prelistkeys', throw=True, namespace=namespace)
self.ui.debug('listing keys for "%s"\n' % namespace)
values = pushkey.list(self, namespace)
self.hook('listkeys', namespace=namespace, values=values)
return values
def debugwireargs(self, one, two, three=None, four=None, five=None):
'''used to test argument passing over the wire'''
return "%s %s %s %s %s" % (one, two, three, four, five)
def savecommitmessage(self, text):
fp = self.opener('last-message.txt', 'wb')
try:
fp.write(text)
finally:
fp.close()
return self.pathto(fp.name[len(self.root)+1:])
# used to avoid circular references so destructors work
def aftertrans(files):
renamefiles = [tuple(t) for t in files]
def a():
for src, dest in renamefiles:
try:
util.rename(src, dest)
except OSError: # journal file does not yet exist
pass
return a
def undoname(fn):
base, name = os.path.split(fn)
assert name.startswith('journal')
return os.path.join(base, name.replace('journal', 'undo', 1))
def instance(ui, path, create):
return localrepository(ui, util.urllocalpath(path), create)
def islocal(path):
return True