Mercurial > hg
view mercurial/localrepo.py @ 23344:6333412245ec stable
mq: when setting message in plain mode, separate it from header (issue4453)
Fix inconsistent handling of plain header separation in mq patcheader - and
contrary to c87f2a5a6e49, do it in the direction of having an empty line
between header and description. Plain patches are like mails and should thus
have an empty line between headers and body in compliance with RFC 822 3.1.
author | Mads Kiilerich <madski@unity3d.com> |
---|---|
date | Sun, 16 Nov 2014 19:57:40 +0100 |
parents | eb315418224c |
children | 3872d563e01a 53a65929ef1f |
line wrap: on
line source
# 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 hex, nullid, short from i18n import _ import urllib import peer, changegroup, subrepo, pushkey, obsolete, repoview import changelog, dirstate, filelog, manifest, context, bookmarks, phases import lock as lockmod import transaction, store, encoding, exchange, bundle2 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 import branchmap, pathutil propertycache = util.propertycache filecache = scmutil.filecache class repofilecache(filecache): """All filecache usage on repo are done for logic that should be unfiltered """ def __get__(self, repo, type=None): return super(repofilecache, self).__get__(repo.unfiltered(), type) def __set__(self, repo, value): return super(repofilecache, self).__set__(repo.unfiltered(), value) def __delete__(self, repo): return super(repofilecache, self).__delete__(repo.unfiltered()) class storecache(repofilecache): """filecache for files in the store""" def join(self, obj, fname): return obj.sjoin(fname) class unfilteredpropertycache(propertycache): """propertycache that apply to unfiltered repo only""" def __get__(self, repo, type=None): unfi = repo.unfiltered() if unfi is repo: return super(unfilteredpropertycache, self).__get__(unfi) return getattr(unfi, self.name) class filteredpropertycache(propertycache): """propertycache that must take filtering in account""" def cachevalue(self, obj, value): object.__setattr__(obj, self.name, value) def hasunfilteredcache(repo, name): """check if a repo has an unfilteredpropertycache value for <name>""" return name in vars(repo.unfiltered()) def unfilteredmethod(orig): """decorate method that always need to be run on unfiltered version""" def wrapper(repo, *args, **kwargs): return orig(repo.unfiltered(), *args, **kwargs) return wrapper moderncaps = set(('lookup', 'branchmap', 'pushkey', 'known', 'getbundle', 'unbundle')) 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.filtered('served') 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 self._repo.branchmap() def heads(self): return self._repo.heads() def known(self, nodes): return self._repo.known(nodes) def getbundle(self, source, heads=None, common=None, bundlecaps=None, format='HG10', **kwargs): cg = exchange.getbundle(self._repo, source, heads=heads, common=common, bundlecaps=bundlecaps, **kwargs) if bundlecaps is not None and 'HG2Y' in bundlecaps: # When requesting a bundle2, getbundle returns a stream to make the # wire level function happier. We need to build a proper object # from it in local peer. cg = bundle2.unbundle20(self.ui, cg) return cg # TODO We might want to move the next two calls into legacypeer and add # unbundle instead. def unbundle(self, cg, heads, url): """apply a bundle on a repo This function handles the repo locking itself.""" try: cg = exchange.readbundle(self.ui, cg, None) ret = exchange.unbundle(self._repo, cg, heads, 'push', url) if util.safehasattr(ret, 'getchunks'): # This is a bundle20 object, turn it into an unbundler. # This little dance should be dropped eventually when the API # is finally improved. stream = util.chunkbuffer(ret.getchunks()) ret = bundle2.unbundle20(self.ui, stream) return ret except error.PushRaced, exc: raise error.ResponseError(_('push failed:'), str(exc)) def lock(self): return self._repo.lock() def addchangegroup(self, cg, source, url): return changegroup.addchangegroup(self._repo, 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 changegroup.changegroup(self._repo, basenodes, source) def changegroupsubset(self, bases, heads, source): return changegroup.changegroupsubset(self._repo, bases, heads, source) class localrepository(object): supportedformats = set(('revlogv1', 'generaldelta')) _basesupported = supportedformats | set(('store', 'fncache', 'shared', 'dotencode')) openerreqs = set(('revlogv1', 'generaldelta')) requirements = ['revlogv1'] filtername = None # a list of (ui, featureset) functions. # only functions defined in module of enabled extensions are invoked featuresetupfuncs = set() def _baserequirements(self, create): return self.requirements[:] def __init__(self, baseui, path=None, create=False): self.wvfs = scmutil.vfs(path, expandpath=True, realpath=True) self.wopener = self.wvfs self.root = self.wvfs.base self.path = self.wvfs.join(".hg") self.origroot = path self.auditor = pathutil.pathauditor(self.root, self._checknested) self.vfs = scmutil.vfs(self.path) self.opener = self.vfs self.baseui = baseui self.ui = baseui.copy() self.ui.copy = baseui.copy # prevent copying repo configuration # 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 self.featuresetupfuncs: self.supported = set(self._basesupported) # use private copy extmods = set(m.__name__ for n, m in extensions.extensions(self.ui)) for setupfunc in self.featuresetupfuncs: if setupfunc.__module__ in extmods: setupfunc(self.ui, self.supported) else: self.supported = self._basesupported 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: vfs = scmutil.vfs(self.vfs.read("sharedpath").rstrip('\n'), realpath=True) s = vfs.base if not vfs.exists(): 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.vfs) self.spath = self.store.path self.svfs = self.store.vfs self.sopener = self.svfs self.sjoin = self.store.join self.vfs.createmode = self.store.createmode self._applyrequirements(requirements) if create: self._writerequirements() self._branchcaches = {} 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 = {} # hold sets of revision to be filtered # should be cleared when something might have changed the filter value: # - new changesets, # - phase change, # - new obsolescence marker, # - working directory parent change, # - bookmark changes self.filteredrevcache = {} def close(self): pass def _restrictcapabilities(self, caps): # bundle2 is not ready for prime time, drop it unless explicitly # required by the tests (or some brave tester) if self.ui.configbool('experimental', 'bundle2-exp', False): caps = set(caps) capsblob = bundle2.encodecaps(bundle2.getrepocaps(self)) caps.add('bundle2-exp=' + urllib.quote(capsblob)) return caps def _applyrequirements(self, requirements): self.requirements = requirements self.sopener.options = dict((r, 1) for r in requirements if r in self.openerreqs) chunkcachesize = self.ui.configint('format', 'chunkcachesize') if chunkcachesize is not None: self.sopener.options['chunkcachesize'] = chunkcachesize def _writerequirements(self): reqfile = self.opener("requires", "w") for r in sorted(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 def unfiltered(self): """Return unfiltered version of the repository Intended to be overwritten by filtered repo.""" return self def filtered(self, name): """Return a filtered version of a repository""" # build a new class with the mixin and the current class # (possibly subclass of the repo) class proxycls(repoview.repoview, self.unfiltered().__class__): pass return proxycls(self, name) @repofilecache('bookmarks') def _bookmarks(self): return bookmarks.bmstore(self) @repofilecache('bookmarks.current') def _bookmarkcurrent(self): return bookmarks.readcurrent(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): # read default format for new obsstore. defaultformat = self.ui.configint('format', 'obsstore-version', None) # rely on obsstore class default when possible. kwargs = {} if defaultformat is not None: kwargs['defaultformat'] = defaultformat readonly = not obsolete.isenabled(self, obsolete.createmarkersopt) store = obsolete.obsstore(self.sopener, readonly=readonly, **kwargs) if store and readonly: # 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 @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) @repofilecache('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): return iter(self.changelog) 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 m(self, revset.spanset(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): """Call a hook, passing this repo instance. This a convenience method to aid invoking hooks. Extensions likely won't call this unless they have registered a custom hook or are replacing code that is expected to call a hook. """ return hook.hook(self.ui, self, name, throw, **args) @unfilteredmethod def _tag(self, names, node, message, local, user, date, extra={}, editor=False): if isinstance(names, str): names = (names,) 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, editor=editor) 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, editor=False): '''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: m = matchmod.exact(self.root, '', ['.hgtags']) if util.any(self.status(match=m, unknown=True, ignored=True)): raise util.Abort(_('working copy of .hgtags is changed'), hint=_('please commit .hgtags manually')) self.tags() # instantiate the cache self._tag(names, node, message, local, user, date, editor=editor) @filteredpropertycache 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 = {} if self.changelog.filteredrevs: tags, tt = self._findtags() else: tags = self._tagscache.tags for k, v in 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(): l.append((self.changelog.rev(n), 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 branchmap(self): '''returns a dictionary {branch: [branchheads]} with branchheads ordered by increasing revision number''' branchmap.updatecache(self) return self._branchcaches[self.filtername] def branchtip(self, branch): '''return the tip node for a given branch''' try: return self.branchmap().branchtip(branch) except KeyError: raise error.RepoLookupError(_("unknown branch '%s'") % 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): # so statichttprepo's override of local() works if not self.local(): return False if not self.ui.configbool('phases', 'publish', True): return True # if publishing we can't copy if there is filtered content return not self.filtered('visible').changelog.filteredrevs def join(self, f, *insidef): return os.path.join(self.path, f, *insidef) def wjoin(self, f, *insidef): return os.path.join(self.root, f, *insidef) 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): self.dirstate.beginparentchange() copies = self.dirstate.setparents(p1, p2) pctx = self[p1] 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. for f in copies: if f not in pctx and copies[f] in pctx: self.dirstate.copy(copies[f], f) if p2 == nullid: for f, s in sorted(self.dirstate.copies().items()): if f not in pctx and s not in pctx: self.dirstate.copy(None, f) self.dirstate.endparentchange() 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 self.wvfs.islink(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 @unfilteredpropertycache def _encodefilterpats(self): return self._loadfilter('encode') @unfilteredpropertycache 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 = self.wvfs.readlink(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: self.wvfs.setflags(filename, False, True) def wwritedata(self, filename, data): return self._filter(self._decodefilterpats, filename, data) def transaction(self, desc, report=None): tr = self._transref and self._transref() or None if tr and tr.running(): return tr.nest() # abort here if the journal already exists if self.svfs.exists("journal"): raise error.RepoError( _("abandoned transaction found"), hint=_("run 'hg recover' to clean up transaction")) def onclose(): self.store.write(self._transref()) self._writejournal(desc) renames = [(vfs, x, undoname(x)) for vfs, x in self._journalfiles()] rp = report and report or self.ui.warn tr = transaction.transaction(rp, self.sopener, "journal", aftertrans(renames), self.store.createmode, onclose) self._transref = weakref.ref(tr) return tr def _journalfiles(self): return ((self.svfs, 'journal'), (self.vfs, 'journal.dirstate'), (self.vfs, 'journal.branch'), (self.vfs, 'journal.desc'), (self.vfs, 'journal.bookmarks'), (self.svfs, 'journal.phaseroots')) def undofiles(self): return [(vfs, undoname(x)) for vfs, 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 self.svfs.exists("journal"): self.ui.status(_("rolling back interrupted transaction\n")) transaction.rollback(self.sopener, "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 self.svfs.exists("undo"): return self._rollback(dryrun, force) else: self.ui.warn(_("no rollback information available\n")) return 1 finally: release(lock, wlock) @unfilteredmethod # Until we get smarter cache management 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() self.destroying() transaction.rollback(self.sopener, 'undo', ui.warn) if self.vfs.exists('undo.bookmarks'): self.vfs.rename('undo.bookmarks', 'bookmarks') if self.svfs.exists('undo.phaseroots'): self.svfs.rename('undo.phaseroots', 'phaseroots') self.invalidate() parentgone = (parents[0] not in self.changelog.nodemap or parents[1] not in self.changelog.nodemap) if parentgone: self.vfs.rename('undo.dirstate', '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): if '_tagscache' in vars(self): # can't use delattr on proxy del self.__dict__['_tagscache'] self.unfiltered()._branchcaches.clear() self.invalidatevolatilesets() def invalidatevolatilesets(self): self.filteredrevcache.clear() obsolete.clearobscaches(self) 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 hasunfilteredcache(self, 'dirstate'): for k in self.dirstate._filecache: try: delattr(self.dirstate, k) except AttributeError: pass delattr(self.unfiltered(), 'dirstate') def invalidate(self): unfiltered = self.unfiltered() # all file caches are stored unfiltered for k in self._filecache: # dirstate is invalidated separately in invalidatedirstate() if k == 'dirstate': continue try: delattr(unfiltered, k) except AttributeError: pass self.invalidatecaches() self.store.invalidatecaches() def invalidateall(self): '''Fully invalidates both store and non-store parts, causing the subsequent operation to reread any outside changes.''' # extension should hook this to invalidate its caches self.invalidate() self.invalidatedirstate() def _lock(self, vfs, lockname, wait, releasefn, acquirefn, desc): try: l = lockmod.lock(vfs, 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 = lockmod.lock(vfs, lockname, int(self.ui.config("ui", "timeout", "600")), releasefn, desc=desc) self.ui.warn(_("got lock after %s seconds\n") % l.delay) 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(): for k, ce in self._filecache.items(): if k == 'dirstate' or k not in self.__dict__: continue ce.refresh() l = self._lock(self.svfs, "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(): if self.dirstate.pendingparentchange(): self.dirstate.invalidate() else: self.dirstate.write() self._filecache['dirstate'].refresh() l = self._lock(self.vfs, "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 = 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 fparent1 == nullid: fparent1, fparent2 = fparent2, nullid elif fparent2 != nullid: # is one parent an ancestor of the other? fparentancestors = flog.commonancestorsheads(fparent1, fparent2) if fparent1 in fparentancestors: fparent1, fparent2 = fparent2, nullid elif fparent2 in fparentancestors: 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? elif fname in manifest1 and manifest1.flags(fname) != fctx.flags(): changelist.append(fname) return fparent1 @unfilteredmethod 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.explicitdir = 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)')) status = self.status(match=match, clean=force) if force: status.modified.extend(status.clean) # mq may commit clean 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 for c in status.modified, status.added, status.removed: if '.hgsubstate' in c: c.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")) status.modified.insert(0, '.hgsubstate') elif '.hgsub' in status.removed: # clean up .hgsubstate when .hgsub is removed if ('.hgsubstate' in wctx and '.hgsubstate' not in (status.modified + status.added + status.removed)): status.removed.insert(0, '.hgsubstate') # make sure all explicit patterns are matched if not force and match.files(): matched = set(status.modified + status.added + status.removed) for f in match.files(): f = self.dirstate.normalize(f) if f == '.' or f in matched or f in wctx.substate: continue if f in status.deleted: 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!")) cctx = context.workingctx(self, text, user, date, extra, status) if (not force and not extra.get("close") and not merge and not cctx.files() and wctx.branch() == wctx.p1().branch()): return None if merge and cctx.deleted(): raise util.Abort(_("cannot commit merge with missing files")) ms = mergemod.mergestate(self) for f in status.modified: if f in ms and ms[f] == 'u': raise util.Abort(_("unresolved merge conflicts " "(see hg help resolve)")) if editor: cctx._text = editor(self, cctx, subs) edited = (text != cctx._text) # 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) # 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) 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) cctx.markcommitted(ret) ms.reset() finally: wlock.release() def commithook(node=hex(ret), parent1=hookp1, parent2=hookp2): # hack for command that use a temporary commit (eg: histedit) # temporary commit got stripped before hook release if node in self: self.hook("commit", node=node, parent1=parent1, parent2=parent2) self._afterlock(commithook) return ret @unfilteredmethod def commitctx(self, ctx, error=False): """Add a new revision to current repository. Revision information is passed via the context argument. """ tr = None 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() m2 = p2.manifest() m = m1.copy() # check in files added = [] changed = [] removed = list(ctx.removed()) linkrev = len(self) for f in sorted(ctx.modified() + ctx.added()): self.ui.note(f + "\n") try: fctx = ctx[f] if fctx is None: removed.append(f) else: added.append(f) m[f] = self._filecommit(fctx, m1, m2, linkrev, trp, changed) m.setflag(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 # update manifest removed = [f for f in sorted(removed) if f in m1 or f in m2] drop = [f for f in removed if f in m] for f in drop: del m[f] mn = self.manifest.add(m, trp, linkrev, p1.manifestnode(), p2.manifestnode(), added, 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 = subrepo.newcommitphase(self.ui, ctx) 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, tr, targetphase, [n]) tr.close() branchmap.updatecache(self.filtered('served')) return n finally: if tr: tr.release() lock.release() @unfilteredmethod def destroying(self): '''Inform the repository that nodes are about to be destroyed. Intended for use by strip and rollback, so there's a common place for anything that has to be done before destroying history. This is mostly useful for saving state that is in memory and waiting to be flushed when the current lock is released. Because a call to destroyed is imminent, the repo will be invalidated causing those changes to stay in memory (waiting for the next unlock), or vanish completely. ''' # When using the same lock to commit and strip, the phasecache is left # dirty after committing. Then when we strip, the repo is invalidated, # causing those changes to disappear. if '_phasecache' in vars(self): self._phasecache.write() @unfilteredmethod def destroyed(self): '''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. ''' # When one tries to: # 1) destroy nodes thus calling this method (e.g. strip) # 2) use phasecache somewhere (e.g. commit) # # then 2) will fail because the phasecache contains nodes that were # removed. We can either remove phasecache from the filecache, # causing it to reload next time it is accessed, or simply filter # the removed nodes now and write the updated cache. self._phasecache.filterunknown(self) self._phasecache.write() # update the 'served' branch cache to help read only server process # Thanks to branchcache collaboration this is done from the nearest # filtered subset and it is expected to be fast. branchmap.updatecache(self.filtered('served')) # 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.invalidate() 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): '''a convenience method that calls node1.status(node2)''' return self[node1].status(node2, match, ignored, clean, unknown, listsubrepos) 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.branchheads(branch, closed=closed))) 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] 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 checkpush(self, pushop): """Extensions can override this function if additional checks have to be performed before pushing, or call it if they override push command. """ pass @unfilteredpropertycache def prepushoutgoinghooks(self): """Return util.hooks consists of "(repo, remote, outgoing)" functions, which are called before pushing changesets. """ return util.hooks() def stream_in(self, remote, requirements): lock = self.lock() try: # Save remote branchmap. We will use it later # to speed up branchcache creation rbranchmap = None if remote.capable("branchmap"): rbranchmap = remote.branchmap() 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() tr = self.transaction(_('clone')) try: 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() tr.close() finally: tr.release() # Writing straight to files circumvented the inmemory caches self.invalidate() 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() if rbranchmap: rbheads = [] closed = [] for bheads in rbranchmap.itervalues(): rbheads.extend(bheads) for h in bheads: r = self.changelog.rev(h) b, c = self.changelog.branchinfo(r) if c: closed.append(h) if rbheads: rtiprev = max((int(self.changelog.rev(node)) for node in rbheads)) cache = branchmap.branchcache(rbranchmap, self[rtiprev].node(), rtiprev, closednodes=closed) # Try to stick it as low as possible # filter above served are unlikely to be fetch from a clone for candidate in ('base', 'immutable', 'served'): rview = self.filtered(candidate) if cache.validfor(rview): self._branchcaches[candidate] = cache cache.write(rview) break 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 explicitly prefers 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'): self.stream_in(remote, set(('revlogv1',))) else: # 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: self.stream_in(remote, streamreqs) quiet = self.ui.backupconfig('ui', 'quietbookmarkmove') try: self.ui.setconfig('ui', 'quietbookmarkmove', True, 'clone') ret = exchange.pull(self, remote, heads).cgresult finally: self.ui.restoreconfig(quiet) return ret 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 vfs, src, dest in renamefiles: try: vfs.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