revlog: simplify revlog version handling

- pass the default version as an attribute on the opener
- eliminate config option mess

mercurial/appendfile.py

@@ -1,161 +1,161
 # appendfile.py - special classes to make repo updates atomic
 #
 # Copyright 2006 Vadim Gelfer <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 import cStringIO, changelog, errno, manifest, os, tempfile, util
 
 # writes to metadata files are ordered.  reads: changelog, manifest,
 # normal files.  writes: normal files, manifest, changelog.
 
 # manifest contains pointers to offsets in normal files.  changelog
 # contains pointers to offsets in manifest.  if reader reads old
 # changelog while manifest or normal files are written, it has no
 # pointers into new parts of those files that are maybe not consistent
 # yet, so will not read them.
 
 # localrepo.addchangegroup thinks it writes changelog first, then
 # manifest, then normal files (this is order they are available, and
 # needed for computing linkrev fields), but uses appendfile to hide
 # updates from readers.  data not written to manifest or changelog
 # until all normal files updated.  write manifest first, then
 # changelog.
 
 # with this write ordering, readers cannot see inconsistent view of
 # repo during update.
 
 class appendfile(object):
     '''implement enough of file protocol to append to revlog file.
     appended data is written to temp file.  reads and seeks span real
     file and temp file.  readers cannot see appended data until
     writedata called.'''
 
     def __init__(self, fp, tmpname):
         if tmpname:
             self.tmpname = tmpname
             self.tmpfp = util.posixfile(self.tmpname, 'ab+')
         else:
             fd, self.tmpname = tempfile.mkstemp(prefix="hg-appendfile-")
             os.close(fd)
             self.tmpfp = util.posixfile(self.tmpname, 'ab+')
         self.realfp = fp
         self.offset = fp.tell()
         # real file is not written by anyone else. cache its size so
         # seek and read can be fast.
         self.realsize = util.fstat(fp).st_size
         self.name = fp.name
 
     def end(self):
         self.tmpfp.flush() # make sure the stat is correct
         return self.realsize + util.fstat(self.tmpfp).st_size
 
     def tell(self):
         return self.offset
 
     def flush(self):
         self.tmpfp.flush()
 
     def close(self):
         self.realfp.close()
         self.tmpfp.close()
 
     def seek(self, offset, whence=0):
         '''virtual file offset spans real file and temp file.'''
         if whence == 0:
             self.offset = offset
         elif whence == 1:
             self.offset += offset
         elif whence == 2:
             self.offset = self.end() + offset
 
         if self.offset < self.realsize:
             self.realfp.seek(self.offset)
         else:
             self.tmpfp.seek(self.offset - self.realsize)
 
     def read(self, count=-1):
         '''only trick here is reads that span real file and temp file.'''
         fp = cStringIO.StringIO()
         old_offset = self.offset
         if self.offset < self.realsize:
             s = self.realfp.read(count)
             fp.write(s)
             self.offset += len(s)
             if count > 0:
                 count -= len(s)
         if count != 0:
             if old_offset != self.offset:
                 self.tmpfp.seek(self.offset - self.realsize)
             s = self.tmpfp.read(count)
             fp.write(s)
             self.offset += len(s)
         return fp.getvalue()
 
     def write(self, s):
         '''append to temp file.'''
         self.tmpfp.seek(0, 2)
         self.tmpfp.write(s)
         # all writes are appends, so offset must go to end of file.
         self.offset = self.realsize + self.tmpfp.tell()
 
 class appendopener(object):
     '''special opener for files that only read or append.'''
 
     def __init__(self, opener):
         self.realopener = opener
         # key: file name, value: appendfile name
         self.tmpnames = {}
 
     def __call__(self, name, mode='r'):
         '''open file.'''
 
         assert mode in 'ra+'
         try:
             realfp = self.realopener(name, 'r')
         except IOError, err:
             if err.errno != errno.ENOENT: raise
             realfp = self.realopener(name, 'w+')
         tmpname = self.tmpnames.get(name)
         fp = appendfile(realfp, tmpname)
         if tmpname is None:
             self.tmpnames[name] = fp.tmpname
         return fp
 
     def writedata(self):
         '''copy data from temp files to real files.'''
         # write .d file before .i file.
         tmpnames = self.tmpnames.items()
         tmpnames.sort()
         for name, tmpname in tmpnames:
             ifp = open(tmpname, 'rb')
             ofp = self.realopener(name, 'a')
             for chunk in util.filechunkiter(ifp):
                 ofp.write(chunk)
             ifp.close()
             os.unlink(tmpname)
             del self.tmpnames[name]
             ofp.close()
 
     def cleanup(self):
         '''delete temp files (this discards unwritten data!)'''
         for tmpname in self.tmpnames.values():
             os.unlink(tmpname)
 
 # files for changelog and manifest are in different appendopeners, so
 # not mixed up together.
 
 class appendchangelog(changelog.changelog, appendopener):
-    def __init__(self, opener, version):
+    def __init__(self, opener):
         appendopener.__init__(self, opener)
-        changelog.changelog.__init__(self, self, version)
+        changelog.changelog.__init__(self, self)
     def checkinlinesize(self, fp, tr):
         return
 
 class appendmanifest(manifest.manifest, appendopener):
-    def __init__(self, opener, version):
+    def __init__(self, opener):
         appendopener.__init__(self, opener)
-        manifest.manifest.__init__(self, self, version)
+        manifest.manifest.__init__(self, self)
     def checkinlinesize(self, fp, tr):
         return

mercurial/changelog.py

@@ -1,105 +1,105
 # changelog.py - changelog class for mercurial
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from revlog import *
 from i18n import _
 import os, time, util
 
 def _string_escape(text):
     """
     >>> d = {'nl': chr(10), 'bs': chr(92), 'cr': chr(13), 'nul': chr(0)}
     >>> s = "ab%(nl)scd%(bs)s%(bs)sn%(nul)sab%(cr)scd%(bs)s%(nl)s" % d
     >>> s
     'ab\\ncd\\\\\\\\n\\x00ab\\rcd\\\\\\n'
     >>> res = _string_escape(s)
     >>> s == _string_unescape(res)
     True
     """
     # subset of the string_escape codec
     text = text.replace('\\', '\\\\').replace('\n', '\\n').replace('\r', '\\r')
     return text.replace('\0', '\\0')
 
 def _string_unescape(text):
     return text.decode('string_escape')
 
 class changelog(revlog):
-    def __init__(self, opener, defversion=REVLOGV0):
-        revlog.__init__(self, opener, "00changelog.i", defversion)
+    def __init__(self, opener):
+        revlog.__init__(self, opener, "00changelog.i")
 
     def decode_extra(self, text):
         extra = {}
         for l in text.split('\0'):
             if not l:
                 continue
             k, v = _string_unescape(l).split(':', 1)
             extra[k] = v
         return extra
 
     def encode_extra(self, d):
         items = [_string_escape(":".join(t)) for t in d.iteritems()]
         return "\0".join(items)
 
     def extract(self, text):
         """
         format used:
         nodeid\n        : manifest node in ascii
         user\n          : user, no \n or \r allowed
         time tz extra\n : date (time is int or float, timezone is int)
                         : extra is metadatas, encoded and separated by '\0'
                         : older versions ignore it
         files\n\n       : files modified by the cset, no \n or \r allowed
         (.*)            : comment (free text, ideally utf-8)
 
         changelog v0 doesn't use extra
         """
         if not text:
             return (nullid, "", (0, 0), [], "", {'branch': 'default'})
         last = text.index("\n\n")
         desc = util.tolocal(text[last + 2:])
         l = text[:last].split('\n')
         manifest = bin(l[0])
         user = util.tolocal(l[1])
 
         extra_data = l[2].split(' ', 2)
         if len(extra_data) != 3:
             time = float(extra_data.pop(0))
             try:
                 # various tools did silly things with the time zone field.
                 timezone = int(extra_data[0])
             except:
                 timezone = 0
             extra = {}
         else:
             time, timezone, extra = extra_data
             time, timezone = float(time), int(timezone)
             extra = self.decode_extra(extra)
         if not extra.get('branch'):
             extra['branch'] = 'default'
         files = l[3:]
         return (manifest, user, (time, timezone), files, desc, extra)
 
     def read(self, node):
         return self.extract(self.revision(node))
 
     def add(self, manifest, list, desc, transaction, p1=None, p2=None,
                   user=None, date=None, extra={}):
 
         user, desc = util.fromlocal(user), util.fromlocal(desc)
 
         if date:
             parseddate = "%d %d" % util.parsedate(date)
         else:
             parseddate = "%d %d" % util.makedate()
         if extra and extra.get("branch") in ("default", ""):
             del extra["branch"]
         if extra:
             extra = self.encode_extra(extra)
             parseddate = "%s %s" % (parseddate, extra)
         list.sort()
         l = [hex(manifest), user, parseddate] + list + ["", desc]
         text = "\n".join(l)
         return self.addrevision(text, transaction, self.count(), p1, p2)

mercurial/commands.py

@@ -1,3342 +1,3341
 # commands.py - command processing for mercurial
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 import demandimport; demandimport.enable()
 from node import *
 from i18n import _
 import bisect, os, re, sys, signal, imp, urllib, pdb, shlex, stat
 import fancyopts, ui, hg, util, lock, revlog, bundlerepo
 import difflib, patch, time, help, mdiff, tempfile
 import traceback, errno, version, atexit, socket
 import archival, changegroup, cmdutil, hgweb.server, sshserver
 
 class UnknownCommand(Exception):
     """Exception raised if command is not in the command table."""
 class AmbiguousCommand(Exception):
     """Exception raised if command shortcut matches more than one command."""
 
 def bail_if_changed(repo):
     modified, added, removed, deleted = repo.status()[:4]
     if modified or added or removed or deleted:
         raise util.Abort(_("outstanding uncommitted changes"))
 
 def logmessage(opts):
     """ get the log message according to -m and -l option """
     message = opts['message']
     logfile = opts['logfile']
 
     if message and logfile:
         raise util.Abort(_('options --message and --logfile are mutually '
                            'exclusive'))
     if not message and logfile:
         try:
             if logfile == '-':
                 message = sys.stdin.read()
             else:
                 message = open(logfile).read()
         except IOError, inst:
             raise util.Abort(_("can't read commit message '%s': %s") %
                              (logfile, inst.strerror))
     return message
 
 def setremoteconfig(ui, opts):
     "copy remote options to ui tree"
     if opts.get('ssh'):
         ui.setconfig("ui", "ssh", opts['ssh'])
     if opts.get('remotecmd'):
         ui.setconfig("ui", "remotecmd", opts['remotecmd'])
 
 # Commands start here, listed alphabetically
 
 def add(ui, repo, *pats, **opts):
     """add the specified files on the next commit
 
     Schedule files to be version controlled and added to the repository.
 
     The files will be added to the repository at the next commit. To
     undo an add before that, see hg revert.
 
     If no names are given, add all files in the repository.
     """
 
     names = []
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts):
         if exact:
             if ui.verbose:
                 ui.status(_('adding %s\n') % rel)
             names.append(abs)
         elif repo.dirstate.state(abs) == '?':
             ui.status(_('adding %s\n') % rel)
             names.append(abs)
     if not opts.get('dry_run'):
         repo.add(names)
 
 def addremove(ui, repo, *pats, **opts):
     """add all new files, delete all missing files
 
     Add all new files and remove all missing files from the repository.
 
     New files are ignored if they match any of the patterns in .hgignore. As
     with add, these changes take effect at the next commit.
 
     Use the -s option to detect renamed files.  With a parameter > 0,
     this compares every removed file with every added file and records
     those similar enough as renames.  This option takes a percentage
     between 0 (disabled) and 100 (files must be identical) as its
     parameter.  Detecting renamed files this way can be expensive.
     """
     sim = float(opts.get('similarity') or 0)
     if sim < 0 or sim > 100:
         raise util.Abort(_('similarity must be between 0 and 100'))
     return cmdutil.addremove(repo, pats, opts, similarity=sim/100.)
 
 def annotate(ui, repo, *pats, **opts):
     """show changeset information per file line
 
     List changes in files, showing the revision id responsible for each line
 
     This command is useful to discover who did a change or when a change took
     place.
 
     Without the -a option, annotate will avoid processing files it
     detects as binary. With -a, annotate will generate an annotation
     anyway, probably with undesirable results.
     """
     getdate = util.cachefunc(lambda x: util.datestr(x.date()))
 
     if not pats:
         raise util.Abort(_('at least one file name or pattern required'))
 
     opmap = [['user', lambda x: ui.shortuser(x.user())],
              ['number', lambda x: str(x.rev())],
              ['changeset', lambda x: short(x.node())],
              ['date', getdate], ['follow', lambda x: x.path()]]
     if (not opts['user'] and not opts['changeset'] and not opts['date']
         and not opts['follow']):
         opts['number'] = 1
 
     ctx = repo.changectx(opts['rev'])
 
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts,
                                              node=ctx.node()):
         fctx = ctx.filectx(abs)
         if not opts['text'] and util.binary(fctx.data()):
             ui.write(_("%s: binary file\n") % ((pats and rel) or abs))
             continue
 
         lines = fctx.annotate(follow=opts.get('follow'))
         pieces = []
 
         for o, f in opmap:
             if opts[o]:
                 l = [f(n) for n, dummy in lines]
                 if l:
                     m = max(map(len, l))
                     pieces.append(["%*s" % (m, x) for x in l])
 
         if pieces:
             for p, l in zip(zip(*pieces), lines):
                 ui.write("%s: %s" % (" ".join(p), l[1]))
 
 def archive(ui, repo, dest, **opts):
     '''create unversioned archive of a repository revision
 
     By default, the revision used is the parent of the working
     directory; use "-r" to specify a different revision.
 
     To specify the type of archive to create, use "-t".  Valid
     types are:
 
     "files" (default): a directory full of files
     "tar": tar archive, uncompressed
     "tbz2": tar archive, compressed using bzip2
     "tgz": tar archive, compressed using gzip
     "uzip": zip archive, uncompressed
     "zip": zip archive, compressed using deflate
 
     The exact name of the destination archive or directory is given
     using a format string; see "hg help export" for details.
 
     Each member added to an archive file has a directory prefix
     prepended.  Use "-p" to specify a format string for the prefix.
     The default is the basename of the archive, with suffixes removed.
     '''
 
     node = repo.changectx(opts['rev']).node()
     dest = cmdutil.make_filename(repo, dest, node)
     if os.path.realpath(dest) == repo.root:
         raise util.Abort(_('repository root cannot be destination'))
     dummy, matchfn, dummy = cmdutil.matchpats(repo, [], opts)
     kind = opts.get('type') or 'files'
     prefix = opts['prefix']
     if dest == '-':
         if kind == 'files':
             raise util.Abort(_('cannot archive plain files to stdout'))
         dest = sys.stdout
         if not prefix: prefix = os.path.basename(repo.root) + '-%h'
     prefix = cmdutil.make_filename(repo, prefix, node)
     archival.archive(repo, dest, node, kind, not opts['no_decode'],
                      matchfn, prefix)
 
 def backout(ui, repo, rev, **opts):
     '''reverse effect of earlier changeset
 
     Commit the backed out changes as a new changeset.  The new
     changeset is a child of the backed out changeset.
 
     If you back out a changeset other than the tip, a new head is
     created.  This head is the parent of the working directory.  If
     you back out an old changeset, your working directory will appear
     old after the backout.  You should merge the backout changeset
     with another head.
 
     The --merge option remembers the parent of the working directory
     before starting the backout, then merges the new head with that
     changeset afterwards.  This saves you from doing the merge by
     hand.  The result of this merge is not committed, as for a normal
     merge.'''
 
     bail_if_changed(repo)
     op1, op2 = repo.dirstate.parents()
     if op2 != nullid:
         raise util.Abort(_('outstanding uncommitted merge'))
     node = repo.lookup(rev)
     p1, p2 = repo.changelog.parents(node)
     if p1 == nullid:
         raise util.Abort(_('cannot back out a change with no parents'))
     if p2 != nullid:
         if not opts['parent']:
             raise util.Abort(_('cannot back out a merge changeset without '
                                '--parent'))
         p = repo.lookup(opts['parent'])
         if p not in (p1, p2):
             raise util.Abort(_('%s is not a parent of %s') %
                              (short(p), short(node)))
         parent = p
     else:
         if opts['parent']:
             raise util.Abort(_('cannot use --parent on non-merge changeset'))
         parent = p1
     hg.clean(repo, node, show_stats=False)
     revert_opts = opts.copy()
     revert_opts['date'] = None
     revert_opts['all'] = True
     revert_opts['rev'] = hex(parent)
     revert(ui, repo, **revert_opts)
     commit_opts = opts.copy()
     commit_opts['addremove'] = False
     if not commit_opts['message'] and not commit_opts['logfile']:
         commit_opts['message'] = _("Backed out changeset %s") % (hex(node))
         commit_opts['force_editor'] = True
     commit(ui, repo, **commit_opts)
     def nice(node):
         return '%d:%s' % (repo.changelog.rev(node), short(node))
     ui.status(_('changeset %s backs out changeset %s\n') %
               (nice(repo.changelog.tip()), nice(node)))
     if op1 != node:
         if opts['merge']:
             ui.status(_('merging with changeset %s\n') % nice(op1))
             hg.merge(repo, hex(op1))
         else:
             ui.status(_('the backout changeset is a new head - '
                         'do not forget to merge\n'))
             ui.status(_('(use "backout --merge" '
                         'if you want to auto-merge)\n'))
 
 def branch(ui, repo, label=None, **opts):
     """set or show the current branch name
 
     With <name>, set the current branch name. Otherwise, show the
     current branch name.
 
     Unless --force is specified, branch will not let you set a
     branch name that shadows an existing branch.
     """
 
     if label:
         if not opts.get('force') and label in repo.branchtags():
             if label not in [p.branch() for p in repo.workingctx().parents()]:
                 raise util.Abort(_('a branch of the same name already exists'
                                    ' (use --force to override)'))
         repo.dirstate.setbranch(util.fromlocal(label))
     else:
         ui.write("%s\n" % util.tolocal(repo.dirstate.branch()))
 
 def branches(ui, repo):
     """list repository named branches
 
     List the repository's named branches.
     """
     b = repo.branchtags()
     l = [(-repo.changelog.rev(n), n, t) for t, n in b.items()]
     l.sort()
     for r, n, t in l:
         hexfunc = ui.debugflag and hex or short
         if ui.quiet:
             ui.write("%s\n" % t)
         else:
             spaces = " " * (30 - util.locallen(t))
             ui.write("%s%s %s:%s\n" % (t, spaces, -r, hexfunc(n)))
 
 def bundle(ui, repo, fname, dest=None, **opts):
     """create a changegroup file
 
     Generate a compressed changegroup file collecting changesets not
     found in the other repository.
 
     If no destination repository is specified the destination is assumed
     to have all the nodes specified by one or more --base parameters.
 
     The bundle file can then be transferred using conventional means and
     applied to another repository with the unbundle or pull command.
     This is useful when direct push and pull are not available or when
     exporting an entire repository is undesirable.
 
     Applying bundles preserves all changeset contents including
     permissions, copy/rename information, and revision history.
     """
     revs = opts.get('rev') or None
     if revs:
         revs = [repo.lookup(rev) for rev in revs]
     base = opts.get('base')
     if base:
         if dest:
             raise util.Abort(_("--base is incompatible with specifiying "
                                "a destination"))
         base = [repo.lookup(rev) for rev in base]
         # create the right base
         # XXX: nodesbetween / changegroup* should be "fixed" instead
         o = []
         has = {nullid: None}
         for n in base:
             has.update(repo.changelog.reachable(n))
         if revs:
             visit = list(revs)
         else:
             visit = repo.changelog.heads()
         seen = {}
         while visit:
             n = visit.pop(0)
             parents = [p for p in repo.changelog.parents(n) if p not in has]
             if len(parents) == 0:
                 o.insert(0, n)
             else:
                 for p in parents:
                     if p not in seen:
                         seen[p] = 1
                         visit.append(p)
     else:
         setremoteconfig(ui, opts)
         dest = ui.expandpath(dest or 'default-push', dest or 'default')
         other = hg.repository(ui, dest)
         o = repo.findoutgoing(other, force=opts['force'])
 
     if revs:
         cg = repo.changegroupsubset(o, revs, 'bundle')
     else:
         cg = repo.changegroup(o, 'bundle')
     changegroup.writebundle(cg, fname, "HG10BZ")
 
 def cat(ui, repo, file1, *pats, **opts):
     """output the current or given revision of files
 
     Print the specified files as they were at the given revision.
     If no revision is given, the parent of the working directory is used,
     or tip if no revision is checked out.
 
     Output may be to a file, in which case the name of the file is
     given using a format string.  The formatting rules are the same as
     for the export command, with the following additions:
 
     %s   basename of file being printed
     %d   dirname of file being printed, or '.' if in repo root
     %p   root-relative path name of file being printed
     """
     ctx = repo.changectx(opts['rev'])
     for src, abs, rel, exact in cmdutil.walk(repo, (file1,) + pats, opts,
                                              ctx.node()):
         fp = cmdutil.make_file(repo, opts['output'], ctx.node(), pathname=abs)
         fp.write(ctx.filectx(abs).data())
 
 def clone(ui, source, dest=None, **opts):
     """make a copy of an existing repository
 
     Create a copy of an existing repository in a new directory.
 
     If no destination directory name is specified, it defaults to the
     basename of the source.
 
     The location of the source is added to the new repository's
     .hg/hgrc file, as the default to be used for future pulls.
 
     For efficiency, hardlinks are used for cloning whenever the source
     and destination are on the same filesystem (note this applies only
     to the repository data, not to the checked out files).  Some
     filesystems, such as AFS, implement hardlinking incorrectly, but
     do not report errors.  In these cases, use the --pull option to
     avoid hardlinking.
 
     You can safely clone repositories and checked out files using full
     hardlinks with
 
       $ cp -al REPO REPOCLONE
 
     which is the fastest way to clone. However, the operation is not
     atomic (making sure REPO is not modified during the operation is
     up to you) and you have to make sure your editor breaks hardlinks
     (Emacs and most Linux Kernel tools do so).
 
     If you use the -r option to clone up to a specific revision, no
     subsequent revisions will be present in the cloned repository.
     This option implies --pull, even on local repositories.
 
     See pull for valid source format details.
 
     It is possible to specify an ssh:// URL as the destination, but no
     .hg/hgrc and working directory will be created on the remote side.
     Look at the help text for the pull command for important details
     about ssh:// URLs.
     """
     setremoteconfig(ui, opts)
     hg.clone(ui, ui.expandpath(source), dest,
              pull=opts['pull'],
              stream=opts['uncompressed'],
              rev=opts['rev'],
              update=not opts['noupdate'])
 
 def commit(ui, repo, *pats, **opts):
     """commit the specified files or all outstanding changes
 
     Commit changes to the given files into the repository.
 
     If a list of files is omitted, all changes reported by "hg status"
     will be committed.
 
     If no commit message is specified, the editor configured in your hgrc
     or in the EDITOR environment variable is started to enter a message.
     """
     message = logmessage(opts)
 
     if opts['addremove']:
         cmdutil.addremove(repo, pats, opts)
     fns, match, anypats = cmdutil.matchpats(repo, pats, opts)
     if pats:
         status = repo.status(files=fns, match=match)
         modified, added, removed, deleted, unknown = status[:5]
         files = modified + added + removed
         slist = None
         for f in fns:
             if f == '.':
                 continue
             if f not in files:
                 rf = repo.wjoin(f)
                 if f in unknown:
                     raise util.Abort(_("file %s not tracked!") % rf)
                 try:
                     mode = os.lstat(rf)[stat.ST_MODE]
                 except OSError:
                     raise util.Abort(_("file %s not found!") % rf)
                 if stat.S_ISDIR(mode):
                     name = f + '/'
                     if slist is None:
                         slist = list(files)
                         slist.sort()
                     i = bisect.bisect(slist, name)
                     if i >= len(slist) or not slist[i].startswith(name):
                         raise util.Abort(_("no match under directory %s!")
                                          % rf)
                 elif not stat.S_ISREG(mode):
                     raise util.Abort(_("can't commit %s: "
                                        "unsupported file type!") % rf)
     else:
         files = []
     try:
         repo.commit(files, message, opts['user'], opts['date'], match,
                     force_editor=opts.get('force_editor'))
     except ValueError, inst:
         raise util.Abort(str(inst))
 
 def docopy(ui, repo, pats, opts, wlock):
     # called with the repo lock held
     #
     # hgsep => pathname that uses "/" to separate directories
     # ossep => pathname that uses os.sep to separate directories
     cwd = repo.getcwd()
     errors = 0
     copied = []
     targets = {}
 
     # abs: hgsep
     # rel: ossep
     # return: hgsep
     def okaytocopy(abs, rel, exact):
         reasons = {'?': _('is not managed'),
                    'a': _('has been marked for add'),
                    'r': _('has been marked for remove')}
         state = repo.dirstate.state(abs)
         reason = reasons.get(state)
         if reason:
             if state == 'a':
                 origsrc = repo.dirstate.copied(abs)
                 if origsrc is not None:
                     return origsrc
             if exact:
                 ui.warn(_('%s: not copying - file %s\n') % (rel, reason))
         else:
             return abs
 
     # origsrc: hgsep
     # abssrc: hgsep
     # relsrc: ossep
     # target: ossep
     def copy(origsrc, abssrc, relsrc, target, exact):
         abstarget = util.canonpath(repo.root, cwd, target)
         reltarget = util.pathto(repo.root, cwd, abstarget)
         prevsrc = targets.get(abstarget)
         if prevsrc is not None:
             ui.warn(_('%s: not overwriting - %s collides with %s\n') %
                     (reltarget, util.localpath(abssrc),
                      util.localpath(prevsrc)))
             return
         if (not opts['after'] and os.path.exists(reltarget) or
             opts['after'] and repo.dirstate.state(abstarget) not in '?r'):
             if not opts['force']:
                 ui.warn(_('%s: not overwriting - file exists\n') %
                         reltarget)
                 return
             if not opts['after'] and not opts.get('dry_run'):
                 os.unlink(reltarget)
         if opts['after']:
             if not os.path.exists(reltarget):
                 return
         else:
             targetdir = os.path.dirname(reltarget) or '.'
             if not os.path.isdir(targetdir) and not opts.get('dry_run'):
                 os.makedirs(targetdir)
             try:
                 restore = repo.dirstate.state(abstarget) == 'r'
                 if restore and not opts.get('dry_run'):
                     repo.undelete([abstarget], wlock)
                 try:
                     if not opts.get('dry_run'):
                         util.copyfile(relsrc, reltarget)
                     restore = False
                 finally:
                     if restore:
                         repo.remove([abstarget], wlock)
             except IOError, inst:
                 if inst.errno == errno.ENOENT:
                     ui.warn(_('%s: deleted in working copy\n') % relsrc)
                 else:
                     ui.warn(_('%s: cannot copy - %s\n') %
                             (relsrc, inst.strerror))
                     errors += 1
                     return
         if ui.verbose or not exact:
             ui.status(_('copying %s to %s\n') % (relsrc, reltarget))
         targets[abstarget] = abssrc
         if abstarget != origsrc and not opts.get('dry_run'):
             repo.copy(origsrc, abstarget, wlock)
         copied.append((abssrc, relsrc, exact))
 
     # pat: ossep
     # dest ossep
     # srcs: list of (hgsep, hgsep, ossep, bool)
     # return: function that takes hgsep and returns ossep
     def targetpathfn(pat, dest, srcs):
         if os.path.isdir(pat):
             abspfx = util.canonpath(repo.root, cwd, pat)
             abspfx = util.localpath(abspfx)
             if destdirexists:
                 striplen = len(os.path.split(abspfx)[0])
             else:
                 striplen = len(abspfx)
             if striplen:
                 striplen += len(os.sep)
             res = lambda p: os.path.join(dest, util.localpath(p)[striplen:])
         elif destdirexists:
             res = lambda p: os.path.join(dest,
                                          os.path.basename(util.localpath(p)))
         else:
             res = lambda p: dest
         return res
 
     # pat: ossep
     # dest ossep
     # srcs: list of (hgsep, hgsep, ossep, bool)
     # return: function that takes hgsep and returns ossep
     def targetpathafterfn(pat, dest, srcs):
         if util.patkind(pat, None)[0]:
             # a mercurial pattern
             res = lambda p: os.path.join(dest,
                                          os.path.basename(util.localpath(p)))
         else:
             abspfx = util.canonpath(repo.root, cwd, pat)
             if len(abspfx) < len(srcs[0][0]):
                 # A directory. Either the target path contains the last
                 # component of the source path or it does not.
                 def evalpath(striplen):
                     score = 0
                     for s in srcs:
                         t = os.path.join(dest, util.localpath(s[0])[striplen:])
                         if os.path.exists(t):
                             score += 1
                     return score
 
                 abspfx = util.localpath(abspfx)
                 striplen = len(abspfx)
                 if striplen:
                     striplen += len(os.sep)
                 if os.path.isdir(os.path.join(dest, os.path.split(abspfx)[1])):
                     score = evalpath(striplen)
                     striplen1 = len(os.path.split(abspfx)[0])
                     if striplen1:
                         striplen1 += len(os.sep)
                     if evalpath(striplen1) > score:
                         striplen = striplen1
                 res = lambda p: os.path.join(dest,
                                              util.localpath(p)[striplen:])
             else:
                 # a file
                 if destdirexists:
                     res = lambda p: os.path.join(dest,
                                         os.path.basename(util.localpath(p)))
                 else:
                     res = lambda p: dest
         return res
 
 
     pats = util.expand_glob(pats)
     if not pats:
         raise util.Abort(_('no source or destination specified'))
     if len(pats) == 1:
         raise util.Abort(_('no destination specified'))
     dest = pats.pop()
     destdirexists = os.path.isdir(dest)
     if (len(pats) > 1 or util.patkind(pats[0], None)[0]) and not destdirexists:
         raise util.Abort(_('with multiple sources, destination must be an '
                          'existing directory'))
     if opts['after']:
         tfn = targetpathafterfn
     else:
         tfn = targetpathfn
     copylist = []
     for pat in pats:
         srcs = []
         for tag, abssrc, relsrc, exact in cmdutil.walk(repo, [pat], opts,
                                                        globbed=True):
             origsrc = okaytocopy(abssrc, relsrc, exact)
             if origsrc:
                 srcs.append((origsrc, abssrc, relsrc, exact))
         if not srcs:
             continue
         copylist.append((tfn(pat, dest, srcs), srcs))
     if not copylist:
         raise util.Abort(_('no files to copy'))
 
     for targetpath, srcs in copylist:
         for origsrc, abssrc, relsrc, exact in srcs:
             copy(origsrc, abssrc, relsrc, targetpath(abssrc), exact)
 
     if errors:
         ui.warn(_('(consider using --after)\n'))
     return errors, copied
 
 def copy(ui, repo, *pats, **opts):
     """mark files as copied for the next commit
 
     Mark dest as having copies of source files.  If dest is a
     directory, copies are put in that directory.  If dest is a file,
     there can only be one source.
 
     By default, this command copies the contents of files as they
     stand in the working directory.  If invoked with --after, the
     operation is recorded, but no copying is performed.
 
     This command takes effect in the next commit. To undo a copy
     before that, see hg revert.
     """
     wlock = repo.wlock(0)
     errs, copied = docopy(ui, repo, pats, opts, wlock)
     return errs
 
 def debugancestor(ui, index, rev1, rev2):
     """find the ancestor revision of two revisions in a given index"""
-    r = revlog.revlog(util.opener(os.getcwd(), audit=False), index, 0)
+    r = revlog.revlog(util.opener(os.getcwd(), audit=False), index)
     a = r.ancestor(r.lookup(rev1), r.lookup(rev2))
     ui.write("%d:%s\n" % (r.rev(a), hex(a)))
 
 def debugcomplete(ui, cmd='', **opts):
     """returns the completion list associated with the given command"""
 
     if opts['options']:
         options = []
         otables = [globalopts]
         if cmd:
             aliases, entry = findcmd(ui, cmd)
             otables.append(entry[1])
         for t in otables:
             for o in t:
                 if o[0]:
                     options.append('-%s' % o[0])
                 options.append('--%s' % o[1])
         ui.write("%s\n" % "\n".join(options))
         return
 
     clist = findpossible(ui, cmd).keys()
     clist.sort()
     ui.write("%s\n" % "\n".join(clist))
 
 def debugrebuildstate(ui, repo, rev=""):
     """rebuild the dirstate as it would look like for the given revision"""
     if rev == "":
         rev = repo.changelog.tip()
     ctx = repo.changectx(rev)
     files = ctx.manifest()
     wlock = repo.wlock()
     repo.dirstate.rebuild(rev, files)
 
 def debugcheckstate(ui, repo):
     """validate the correctness of the current dirstate"""
     parent1, parent2 = repo.dirstate.parents()
     repo.dirstate.read()
     dc = repo.dirstate.map
     keys = dc.keys()
     keys.sort()
     m1 = repo.changectx(parent1).manifest()
     m2 = repo.changectx(parent2).manifest()
     errors = 0
     for f in dc:
         state = repo.dirstate.state(f)
         if state in "nr" and f not in m1:
             ui.warn(_("%s in state %s, but not in manifest1\n") % (f, state))
             errors += 1
         if state in "a" and f in m1:
             ui.warn(_("%s in state %s, but also in manifest1\n") % (f, state))
             errors += 1
         if state in "m" and f not in m1 and f not in m2:
             ui.warn(_("%s in state %s, but not in either manifest\n") %
                     (f, state))
             errors += 1
     for f in m1:
         state = repo.dirstate.state(f)
         if state not in "nrm":
             ui.warn(_("%s in manifest1, but listed as state %s") % (f, state))
             errors += 1
     if errors:
         error = _(".hg/dirstate inconsistent with current parent's manifest")
         raise util.Abort(error)
 
 def showconfig(ui, repo, *values, **opts):
     """show combined config settings from all hgrc files
 
     With no args, print names and values of all config items.
 
     With one arg of the form section.name, print just the value of
     that config item.
 
     With multiple args, print names and values of all config items
     with matching section names."""
 
     untrusted = bool(opts.get('untrusted'))
     if values:
         if len([v for v in values if '.' in v]) > 1:
             raise util.Abort(_('only one config item permitted'))
     for section, name, value in ui.walkconfig(untrusted=untrusted):
         sectname = section + '.' + name
         if values:
             for v in values:
                 if v == section:
                     ui.write('%s=%s\n' % (sectname, value))
                 elif v == sectname:
                     ui.write(value, '\n')
         else:
             ui.write('%s=%s\n' % (sectname, value))
 
 def debugsetparents(ui, repo, rev1, rev2=None):
     """manually set the parents of the current working directory
 
     This is useful for writing repository conversion tools, but should
     be used with care.
     """
 
     if not rev2:
         rev2 = hex(nullid)
 
     wlock = repo.wlock()
     try:
         repo.dirstate.setparents(repo.lookup(rev1), repo.lookup(rev2))
     finally:
         wlock.release()
 
 def debugstate(ui, repo):
     """show the contents of the current dirstate"""
     repo.dirstate.read()
     dc = repo.dirstate.map
     keys = dc.keys()
     keys.sort()
     for file_ in keys:
         if dc[file_][3] == -1:
             # Pad or slice to locale representation
             locale_len = len(time.strftime("%x %X", time.localtime(0)))
             timestr = 'unset'
             timestr = timestr[:locale_len] + ' '*(locale_len - len(timestr))
         else:
             timestr = time.strftime("%x %X", time.localtime(dc[file_][3]))
         ui.write("%c %3o %10d %s %s\n"
                  % (dc[file_][0], dc[file_][1] & 0777, dc[file_][2],
                     timestr, file_))
     for f in repo.dirstate.copies():
         ui.write(_("copy: %s -> %s\n") % (repo.dirstate.copied(f), f))
 
 def debugdata(ui, file_, rev):
-    """dump the contents of an data file revision"""
-    r = revlog.revlog(util.opener(os.getcwd(), audit=False),
-                      file_[:-2] + ".i", 0)
+    """dump the contents of a data file revision"""
+    r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_[:-2] + ".i")
     try:
         ui.write(r.revision(r.lookup(rev)))
     except KeyError:
         raise util.Abort(_('invalid revision identifier %s') % rev)
 
 def debugdate(ui, date, range=None, **opts):
     """parse and display a date"""
     if opts["extended"]:
         d = util.parsedate(date, util.extendeddateformats)
     else:
         d = util.parsedate(date)
     ui.write("internal: %s %s\n" % d)
     ui.write("standard: %s\n" % util.datestr(d))
     if range:
         m = util.matchdate(range)
         ui.write("match: %s\n" % m(d[0]))
 
 def debugindex(ui, file_):
     """dump the contents of an index file"""
-    r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_, 0)
+    r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_)
     ui.write("   rev    offset  length   base linkrev" +
              " nodeid       p1           p2\n")
     for i in xrange(r.count()):
         node = r.node(i)
         pp = r.parents(node)
         ui.write("% 6d % 9d % 7d % 6d % 7d %s %s %s\n" % (
                 i, r.start(i), r.length(i), r.base(i), r.linkrev(node),
             short(node), short(pp[0]), short(pp[1])))
 
 def debugindexdot(ui, file_):
     """dump an index DAG as a .dot file"""
-    r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_, 0)
+    r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_)
     ui.write("digraph G {\n")
     for i in xrange(r.count()):
         node = r.node(i)
         pp = r.parents(node)
         ui.write("\t%d -> %d\n" % (r.rev(pp[0]), i))
         if pp[1] != nullid:
             ui.write("\t%d -> %d\n" % (r.rev(pp[1]), i))
     ui.write("}\n")
 
 def debuginstall(ui):
     '''test Mercurial installation'''
 
     def writetemp(contents):
         (fd, name) = tempfile.mkstemp()
         f = os.fdopen(fd, "wb")
         f.write(contents)
         f.close()
         return name
 
     problems = 0
 
     # encoding
     ui.status(_("Checking encoding (%s)...\n") % util._encoding)
     try:
         util.fromlocal("test")
     except util.Abort, inst:
         ui.write(" %s\n" % inst)
         ui.write(_(" (check that your locale is properly set)\n"))
         problems += 1
 
     # compiled modules
     ui.status(_("Checking extensions...\n"))
     try:
         import bdiff, mpatch, base85
     except Exception, inst:
         ui.write(" %s\n" % inst)
         ui.write(_(" One or more extensions could not be found"))
         ui.write(_(" (check that you compiled the extensions)\n"))
         problems += 1
 
     # templates
     ui.status(_("Checking templates...\n"))
     try:
         import templater
         t = templater.templater(templater.templatepath("map-cmdline.default"))
     except Exception, inst:
         ui.write(" %s\n" % inst)
         ui.write(_(" (templates seem to have been installed incorrectly)\n"))
         problems += 1
 
     # patch
     ui.status(_("Checking patch...\n"))
     path = os.environ.get('PATH', '')
     patcher = util.find_in_path('gpatch', path,
                                 util.find_in_path('patch', path, None))
     if not patcher:
         ui.write(_(" Can't find patch or gpatch in PATH\n"))
         ui.write(_(" (specify a patch utility in your .hgrc file)\n"))
         problems += 1
     else:
         # actually attempt a patch here
         a = "1\n2\n3\n4\n"
         b = "1\n2\n3\ninsert\n4\n"
         d = mdiff.unidiff(a, None, b, None, "a")
         fa = writetemp(a)
         fd = writetemp(d)
         fp = os.popen('%s %s %s' % (patcher, fa, fd))
         files = []
         output = ""
         for line in fp:
             output += line
             if line.startswith('patching file '):
                 pf = util.parse_patch_output(line.rstrip())
                 files.append(pf)
         if files != [fa]:
             ui.write(_(" unexpected patch output!"))
             ui.write(_(" (you may have an incompatible version of patch)\n"))
             ui.write(output)
             problems += 1
         a = file(fa).read()
         if a != b:
             ui.write(_(" patch test failed!"))
             ui.write(_(" (you may have an incompatible version of patch)\n"))
             problems += 1
         os.unlink(fa)
         os.unlink(fd)
 
     # merge helper
     ui.status(_("Checking merge helper...\n"))
     cmd = (os.environ.get("HGMERGE") or ui.config("ui", "merge")
            or "hgmerge")
     cmdpath = util.find_in_path(cmd, path)
     if not cmdpath:
         cmdpath = util.find_in_path(cmd.split()[0], path)
     if not cmdpath:
         if cmd == 'hgmerge':
             ui.write(_(" No merge helper set and can't find default"
                        " hgmerge script in PATH\n"))
             ui.write(_(" (specify a merge helper in your .hgrc file)\n"))
         else:
             ui.write(_(" Can't find merge helper '%s' in PATH\n") % cmd)
             ui.write(_(" (specify a merge helper in your .hgrc file)\n"))
             problems += 1
     else:
         # actually attempt a patch here
         fa = writetemp("1\n2\n3\n4\n")
         fl = writetemp("1\n2\n3\ninsert\n4\n")
         fr = writetemp("begin\n1\n2\n3\n4\n")
         r = os.system('%s %s %s %s' % (cmd, fl, fa, fr))
         if r:
             ui.write(_(" got unexpected merge error %d!") % r)
             problems += 1
         m = file(fl).read()
         if m != "begin\n1\n2\n3\ninsert\n4\n":
             ui.write(_(" got unexpected merge results!") % r)
             ui.write(_(" (your merge helper may have the"
                        " wrong argument order)\n"))
             ui.write(m)
         os.unlink(fa)
         os.unlink(fl)
         os.unlink(fr)
 
     # editor
     ui.status(_("Checking commit editor...\n"))
     editor = (os.environ.get("HGEDITOR") or
               ui.config("ui", "editor") or
               os.environ.get("EDITOR", "vi"))
     cmdpath = util.find_in_path(editor, path)
     if not cmdpath:
         cmdpath = util.find_in_path(editor.split()[0], path)
     if not cmdpath:
         if editor == 'vi':
             ui.write(_(" No commit editor set and can't find vi in PATH\n"))
             ui.write(_(" (specify a commit editor in your .hgrc file)\n"))
         else:
             ui.write(_(" Can't find editor '%s' in PATH\n") % editor)
             ui.write(_(" (specify a commit editor in your .hgrc file)\n"))
             problems += 1
 
     # check username
     ui.status(_("Checking username...\n"))
     user = os.environ.get("HGUSER")
     if user is None:
         user = ui.config("ui", "username")
     if user is None:
         user = os.environ.get("EMAIL")
     if not user:
         ui.warn(" ")
         ui.username()
         ui.write(_(" (specify a username in your .hgrc file)\n"))
 
     if not problems:
         ui.status(_("No problems detected\n"))
     else:
         ui.write(_("%s problems detected,"
                    " please check your install!\n") % problems)
 
     return problems
 
 def debugrename(ui, repo, file1, *pats, **opts):
     """dump rename information"""
 
     ctx = repo.changectx(opts.get('rev', 'tip'))
     for src, abs, rel, exact in cmdutil.walk(repo, (file1,) + pats, opts,
                                              ctx.node()):
         m = ctx.filectx(abs).renamed()
         if m:
             ui.write(_("%s renamed from %s:%s\n") % (rel, m[0], hex(m[1])))
         else:
             ui.write(_("%s not renamed\n") % rel)
 
 def debugwalk(ui, repo, *pats, **opts):
     """show how files match on given patterns"""
     items = list(cmdutil.walk(repo, pats, opts))
     if not items:
         return
     fmt = '%%s  %%-%ds  %%-%ds  %%s' % (
         max([len(abs) for (src, abs, rel, exact) in items]),
         max([len(rel) for (src, abs, rel, exact) in items]))
     for src, abs, rel, exact in items:
         line = fmt % (src, abs, rel, exact and 'exact' or '')
         ui.write("%s\n" % line.rstrip())
 
 def diff(ui, repo, *pats, **opts):
     """diff repository (or selected files)
 
     Show differences between revisions for the specified files.
 
     Differences between files are shown using the unified diff format.
 
     NOTE: diff may generate unexpected results for merges, as it will
     default to comparing against the working directory's first parent
     changeset if no revisions are specified.
 
     When two revision arguments are given, then changes are shown
     between those revisions. If only one revision is specified then
     that revision is compared to the working directory, and, when no
     revisions are specified, the working directory files are compared
     to its parent.
 
     Without the -a option, diff will avoid generating diffs of files
     it detects as binary. With -a, diff will generate a diff anyway,
     probably with undesirable results.
     """
     node1, node2 = cmdutil.revpair(repo, opts['rev'])
 
     fns, matchfn, anypats = cmdutil.matchpats(repo, pats, opts)
 
     patch.diff(repo, node1, node2, fns, match=matchfn,
                opts=patch.diffopts(ui, opts))
 
 def export(ui, repo, *changesets, **opts):
     """dump the header and diffs for one or more changesets
 
     Print the changeset header and diffs for one or more revisions.
 
     The information shown in the changeset header is: author,
     changeset hash, parent(s) and commit comment.
 
     NOTE: export may generate unexpected diff output for merge changesets,
     as it will compare the merge changeset against its first parent only.
 
     Output may be to a file, in which case the name of the file is
     given using a format string.  The formatting rules are as follows:
 
     %%   literal "%" character
     %H   changeset hash (40 bytes of hexadecimal)
     %N   number of patches being generated
     %R   changeset revision number
     %b   basename of the exporting repository
     %h   short-form changeset hash (12 bytes of hexadecimal)
     %n   zero-padded sequence number, starting at 1
     %r   zero-padded changeset revision number
 
     Without the -a option, export will avoid generating diffs of files
     it detects as binary. With -a, export will generate a diff anyway,
     probably with undesirable results.
 
     With the --switch-parent option, the diff will be against the second
     parent. It can be useful to review a merge.
     """
     if not changesets:
         raise util.Abort(_("export requires at least one changeset"))
     revs = cmdutil.revrange(repo, changesets)
     if len(revs) > 1:
         ui.note(_('exporting patches:\n'))
     else:
         ui.note(_('exporting patch:\n'))
     patch.export(repo, revs, template=opts['output'],
                  switch_parent=opts['switch_parent'],
                  opts=patch.diffopts(ui, opts))
 
 def grep(ui, repo, pattern, *pats, **opts):
     """search for a pattern in specified files and revisions
 
     Search revisions of files for a regular expression.
 
     This command behaves differently than Unix grep.  It only accepts
     Python/Perl regexps.  It searches repository history, not the
     working directory.  It always prints the revision number in which
     a match appears.
 
     By default, grep only prints output for the first revision of a
     file in which it finds a match.  To get it to print every revision
     that contains a change in match status ("-" for a match that
     becomes a non-match, or "+" for a non-match that becomes a match),
     use the --all flag.
     """
     reflags = 0
     if opts['ignore_case']:
         reflags |= re.I
     regexp = re.compile(pattern, reflags)
     sep, eol = ':', '\n'
     if opts['print0']:
         sep = eol = '\0'
 
     fcache = {}
     def getfile(fn):
         if fn not in fcache:
             fcache[fn] = repo.file(fn)
         return fcache[fn]
 
     def matchlines(body):
         begin = 0
         linenum = 0
         while True:
             match = regexp.search(body, begin)
             if not match:
                 break
             mstart, mend = match.span()
             linenum += body.count('\n', begin, mstart) + 1
             lstart = body.rfind('\n', begin, mstart) + 1 or begin
             lend = body.find('\n', mend)
             yield linenum, mstart - lstart, mend - lstart, body[lstart:lend]
             begin = lend + 1
 
     class linestate(object):
         def __init__(self, line, linenum, colstart, colend):
             self.line = line
             self.linenum = linenum
             self.colstart = colstart
             self.colend = colend
 
         def __eq__(self, other):
             return self.line == other.line
 
     matches = {}
     copies = {}
     def grepbody(fn, rev, body):
         matches[rev].setdefault(fn, [])
         m = matches[rev][fn]
         for lnum, cstart, cend, line in matchlines(body):
             s = linestate(line, lnum, cstart, cend)
             m.append(s)
 
     def difflinestates(a, b):
         sm = difflib.SequenceMatcher(None, a, b)
         for tag, alo, ahi, blo, bhi in sm.get_opcodes():
             if tag == 'insert':
                 for i in xrange(blo, bhi):
                     yield ('+', b[i])
             elif tag == 'delete':
                 for i in xrange(alo, ahi):
                     yield ('-', a[i])
             elif tag == 'replace':
                 for i in xrange(alo, ahi):
                     yield ('-', a[i])
                 for i in xrange(blo, bhi):
                     yield ('+', b[i])
 
     prev = {}
     def display(fn, rev, states, prevstates):
         found = False
         filerevmatches = {}
         r = prev.get(fn, -1)
         if opts['all']:
             iter = difflinestates(states, prevstates)
         else:
             iter = [('', l) for l in prevstates]
         for change, l in iter:
             cols = [fn, str(r)]
             if opts['line_number']:
                 cols.append(str(l.linenum))
             if opts['all']:
                 cols.append(change)
             if opts['user']:
                 cols.append(ui.shortuser(get(r)[1]))
             if opts['files_with_matches']:
                 c = (fn, r)
                 if c in filerevmatches:
                     continue
                 filerevmatches[c] = 1
             else:
                 cols.append(l.line)
             ui.write(sep.join(cols), eol)
             found = True
         return found
 
     fstate = {}
     skip = {}
     get = util.cachefunc(lambda r: repo.changectx(r).changeset())
     changeiter, matchfn = cmdutil.walkchangerevs(ui, repo, pats, get, opts)
     found = False
     follow = opts.get('follow')
     for st, rev, fns in changeiter:
         if st == 'window':
             matches.clear()
         elif st == 'add':
             mf = repo.changectx(rev).manifest()
             matches[rev] = {}
             for fn in fns:
                 if fn in skip:
                     continue
                 fstate.setdefault(fn, {})
                 try:
                     grepbody(fn, rev, getfile(fn).read(mf[fn]))
                     if follow:
                         copied = getfile(fn).renamed(mf[fn])
                         if copied:
                             copies.setdefault(rev, {})[fn] = copied[0]
                 except KeyError:
                     pass
         elif st == 'iter':
             states = matches[rev].items()
             states.sort()
             for fn, m in states:
                 copy = copies.get(rev, {}).get(fn)
                 if fn in skip:
                     if copy:
                         skip[copy] = True
                     continue
                 if fn in prev or fstate[fn]:
                     r = display(fn, rev, m, fstate[fn])
                     found = found or r
                     if r and not opts['all']:
                         skip[fn] = True
                         if copy:
                             skip[copy] = True
                 fstate[fn] = m
                 if copy:
                     fstate[copy] = m
                 prev[fn] = rev
 
     fstate = fstate.items()
     fstate.sort()
     for fn, state in fstate:
         if fn in skip:
             continue
         if fn not in copies.get(prev[fn], {}):
             found = display(fn, rev, {}, state) or found
     return (not found and 1) or 0
 
 def heads(ui, repo, **opts):
     """show current repository heads
 
     Show all repository head changesets.
 
     Repository "heads" are changesets that don't have children
     changesets. They are where development generally takes place and
     are the usual targets for update and merge operations.
     """
     if opts['rev']:
         heads = repo.heads(repo.lookup(opts['rev']))
     else:
         heads = repo.heads()
     displayer = cmdutil.show_changeset(ui, repo, opts)
     for n in heads:
         displayer.show(changenode=n)
 
 def help_(ui, name=None, with_version=False):
     """show help for a command, extension, or list of commands
 
     With no arguments, print a list of commands and short help.
 
     Given a command name, print help for that command.
 
     Given an extension name, print help for that extension, and the
     commands it provides."""
     option_lists = []
 
     def helpcmd(name):
         if with_version:
             version_(ui)
             ui.write('\n')
         aliases, i = findcmd(ui, name)
         # synopsis
         ui.write("%s\n\n" % i[2])
 
         # description
         doc = i[0].__doc__
         if not doc:
             doc = _("(No help text available)")
         if ui.quiet:
             doc = doc.splitlines(0)[0]
         ui.write("%s\n" % doc.rstrip())
 
         if not ui.quiet:
             # aliases
             if len(aliases) > 1:
                 ui.write(_("\naliases: %s\n") % ', '.join(aliases[1:]))
 
             # options
             if i[1]:
                 option_lists.append(("options", i[1]))
 
     def helplist(select=None):
         h = {}
         cmds = {}
         for c, e in table.items():
             f = c.split("|", 1)[0]
             if select and not select(f):
                 continue
             if name == "shortlist" and not f.startswith("^"):
                 continue
             f = f.lstrip("^")
             if not ui.debugflag and f.startswith("debug"):
                 continue
             doc = e[0].__doc__
             if not doc:
                 doc = _("(No help text available)")
             h[f] = doc.splitlines(0)[0].rstrip()
             cmds[f] = c.lstrip("^")
 
         fns = h.keys()
         fns.sort()
         m = max(map(len, fns))
         for f in fns:
             if ui.verbose:
                 commands = cmds[f].replace("|",", ")
                 ui.write(" %s:\n      %s\n"%(commands, h[f]))
             else:
                 ui.write(' %-*s   %s\n' % (m, f, h[f]))
 
     def helptopic(name):
         v = None
         for i in help.helptable:
             l = i.split('|')
             if name in l:
                 v = i
                 header = l[-1]
         if not v:
             raise UnknownCommand(name)
 
         # description
         doc = help.helptable[v]
         if not doc:
             doc = _("(No help text available)")
         if callable(doc):
             doc = doc()
 
         ui.write("%s\n" % header)
         ui.write("%s\n" % doc.rstrip())
 
     def helpext(name):
         try:
             mod = findext(name)
         except KeyError:
             raise UnknownCommand(name)
 
         doc = (mod.__doc__ or _('No help text available')).splitlines(0)
         ui.write(_('%s extension - %s\n') % (name.split('.')[-1], doc[0]))
         for d in doc[1:]:
             ui.write(d, '\n')
 
         ui.status('\n')
 
         try:
             ct = mod.cmdtable
         except AttributeError:
             ui.status(_('no commands defined\n'))
             return
 
         if ui.verbose:
             ui.status(_('list of commands:\n\n'))
         else:
             ui.status(_('list of commands (use "hg help -v %s" '
                         'to show aliases and global options):\n\n') % name)
 
         modcmds = dict.fromkeys([c.split('|', 1)[0] for c in ct])
         helplist(modcmds.has_key)
 
     if name and name != 'shortlist':
         i = None
         for f in (helpcmd, helptopic, helpext):
             try:
                 f(name)
                 i = None
                 break
             except UnknownCommand, inst:
                 i = inst
         if i:
             raise i
 
     else:
         # program name
         if ui.verbose or with_version:
             version_(ui)
         else:
             ui.status(_("Mercurial Distributed SCM\n"))
         ui.status('\n')
 
         # list of commands
         if name == "shortlist":
             ui.status(_('basic commands (use "hg help" '
                         'for the full list or option "-v" for details):\n\n'))
         elif ui.verbose:
             ui.status(_('list of commands:\n\n'))
         else:
             ui.status(_('list of commands (use "hg help -v" '
                         'to show aliases and global options):\n\n'))
 
         helplist()
 
     # global options
     if ui.verbose:
         option_lists.append(("global options", globalopts))
 
     # list all option lists
     opt_output = []
     for title, options in option_lists:
         opt_output.append(("\n%s:\n" % title, None))
         for shortopt, longopt, default, desc in options:
             if "DEPRECATED" in desc and not ui.verbose: continue
             opt_output.append(("%2s%s" % (shortopt and "-%s" % shortopt,
                                           longopt and " --%s" % longopt),
                                "%s%s" % (desc,
                                          default
                                          and _(" (default: %s)") % default
                                          or "")))
 
     if opt_output:
         opts_len = max([len(line[0]) for line in opt_output if line[1]])
         for first, second in opt_output:
             if second:
                 ui.write(" %-*s  %s\n" % (opts_len, first, second))
             else:
                 ui.write("%s\n" % first)
 
 def identify(ui, repo):
     """print information about the working copy
 
     Print a short summary of the current state of the repo.
 
     This summary identifies the repository state using one or two parent
     hash identifiers, followed by a "+" if there are uncommitted changes
     in the working directory, followed by a list of tags for this revision.
     """
     parents = [p for p in repo.dirstate.parents() if p != nullid]
     if not parents:
         ui.write(_("unknown\n"))
         return
 
     hexfunc = ui.debugflag and hex or short
     modified, added, removed, deleted = repo.status()[:4]
     output = ["%s%s" %
               ('+'.join([hexfunc(parent) for parent in parents]),
               (modified or added or removed or deleted) and "+" or "")]
 
     if not ui.quiet:
 
         branch = util.tolocal(repo.workingctx().branch())
         if branch != 'default':
             output.append("(%s)" % branch)
 
         # multiple tags for a single parent separated by '/'
         parenttags = ['/'.join(tags)
                       for tags in map(repo.nodetags, parents) if tags]
         # tags for multiple parents separated by ' + '
         if parenttags:
             output.append(' + '.join(parenttags))
 
     ui.write("%s\n" % ' '.join(output))
 
 def import_(ui, repo, patch1, *patches, **opts):
     """import an ordered set of patches
 
     Import a list of patches and commit them individually.
 
     If there are outstanding changes in the working directory, import
     will abort unless given the -f flag.
 
     You can import a patch straight from a mail message.  Even patches
     as attachments work (body part must be type text/plain or
     text/x-patch to be used).  From and Subject headers of email
     message are used as default committer and commit message.  All
     text/plain body parts before first diff are added to commit
     message.
 
     If imported patch was generated by hg export, user and description
     from patch override values from message headers and body.  Values
     given on command line with -m and -u override these.
 
     To read a patch from standard input, use patch name "-".
     """
     patches = (patch1,) + patches
 
     if not opts['force']:
         bail_if_changed(repo)
 
     d = opts["base"]
     strip = opts["strip"]
 
     wlock = repo.wlock()
     lock = repo.lock()
 
     for p in patches:
         pf = os.path.join(d, p)
 
         if pf == '-':
             ui.status(_("applying patch from stdin\n"))
             tmpname, message, user, date = patch.extract(ui, sys.stdin)
         else:
             ui.status(_("applying %s\n") % p)
             tmpname, message, user, date = patch.extract(ui, file(pf))
 
         if tmpname is None:
             raise util.Abort(_('no diffs found'))
 
         try:
             cmdline_message = logmessage(opts)
             if cmdline_message:
                 # pickup the cmdline msg
                 message = cmdline_message
             elif message:
                 # pickup the patch msg
                 message = message.strip()
             else:
                 # launch the editor
                 message = None
             ui.debug(_('message:\n%s\n') % message)
 
             files = {}
             try:
                 fuzz = patch.patch(tmpname, ui, strip=strip, cwd=repo.root,
                                    files=files)
             finally:
                 files = patch.updatedir(ui, repo, files, wlock=wlock)
             repo.commit(files, message, user, date, wlock=wlock, lock=lock)
         finally:
             os.unlink(tmpname)
 
 def incoming(ui, repo, source="default", **opts):
     """show new changesets found in source
 
     Show new changesets found in the specified path/URL or the default
     pull location. These are the changesets that would be pulled if a pull
     was requested.
 
     For remote repository, using --bundle avoids downloading the changesets
     twice if the incoming is followed by a pull.
 
     See pull for valid source format details.
     """
     source = ui.expandpath(source)
     setremoteconfig(ui, opts)
 
     other = hg.repository(ui, source)
     ui.status(_('comparing with %s\n') % source)
     incoming = repo.findincoming(other, force=opts["force"])
     if not incoming:
         try:
             os.unlink(opts["bundle"])
         except:
             pass
         ui.status(_("no changes found\n"))
         return 1
 
     cleanup = None
     try:
         fname = opts["bundle"]
         if fname or not other.local():
             # create a bundle (uncompressed if other repo is not local)
             cg = other.changegroup(incoming, "incoming")
             bundletype = other.local() and "HG10BZ" or "HG10UN"
             fname = cleanup = changegroup.writebundle(cg, fname, bundletype)
             # keep written bundle?
             if opts["bundle"]:
                 cleanup = None
             if not other.local():
                 # use the created uncompressed bundlerepo
                 other = bundlerepo.bundlerepository(ui, repo.root, fname)
 
         revs = None
         if opts['rev']:
             revs = [other.lookup(rev) for rev in opts['rev']]
         o = other.changelog.nodesbetween(incoming, revs)[0]
         if opts['newest_first']:
             o.reverse()
         displayer = cmdutil.show_changeset(ui, other, opts)
         for n in o:
             parents = [p for p in other.changelog.parents(n) if p != nullid]
             if opts['no_merges'] and len(parents) == 2:
                 continue
             displayer.show(changenode=n)
     finally:
         if hasattr(other, 'close'):
             other.close()
         if cleanup:
             os.unlink(cleanup)
 
 def init(ui, dest=".", **opts):
     """create a new repository in the given directory
 
     Initialize a new repository in the given directory.  If the given
     directory does not exist, it is created.
 
     If no directory is given, the current directory is used.
 
     It is possible to specify an ssh:// URL as the destination.
     Look at the help text for the pull command for important details
     about ssh:// URLs.
     """
     setremoteconfig(ui, opts)
     hg.repository(ui, dest, create=1)
 
 def locate(ui, repo, *pats, **opts):
     """locate files matching specific patterns
 
     Print all files under Mercurial control whose names match the
     given patterns.
 
     This command searches the entire repository by default.  To search
     just the current directory and its subdirectories, use "--include .".
 
     If no patterns are given to match, this command prints all file
     names.
 
     If you want to feed the output of this command into the "xargs"
     command, use the "-0" option to both this command and "xargs".
     This will avoid the problem of "xargs" treating single filenames
     that contain white space as multiple filenames.
     """
     end = opts['print0'] and '\0' or '\n'
     rev = opts['rev']
     if rev:
         node = repo.lookup(rev)
     else:
         node = None
 
     ret = 1
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts, node=node,
                                              default='relglob'):
         if not node and repo.dirstate.state(abs) == '?':
             continue
         if opts['fullpath']:
             ui.write(os.path.join(repo.root, abs), end)
         else:
             ui.write(((pats and rel) or abs), end)
         ret = 0
 
     return ret
 
 def log(ui, repo, *pats, **opts):
     """show revision history of entire repository or files
 
     Print the revision history of the specified files or the entire
     project.
 
     File history is shown without following rename or copy history of
     files.  Use -f/--follow with a file name to follow history across
     renames and copies. --follow without a file name will only show
     ancestors or descendants of the starting revision. --follow-first
     only follows the first parent of merge revisions.
 
     If no revision range is specified, the default is tip:0 unless
     --follow is set, in which case the working directory parent is
     used as the starting revision.
 
     By default this command outputs: changeset id and hash, tags,
     non-trivial parents, user, date and time, and a summary for each
     commit. When the -v/--verbose switch is used, the list of changed
     files and full commit message is shown.
 
     NOTE: log -p may generate unexpected diff output for merge
     changesets, as it will compare the merge changeset against its
     first parent only. Also, the files: list will only reflect files
     that are different from BOTH parents.
 
     """
 
     get = util.cachefunc(lambda r: repo.changectx(r).changeset())
     changeiter, matchfn = cmdutil.walkchangerevs(ui, repo, pats, get, opts)
 
     if opts['limit']:
         try:
             limit = int(opts['limit'])
         except ValueError:
             raise util.Abort(_('limit must be a positive integer'))
         if limit <= 0: raise util.Abort(_('limit must be positive'))
     else:
         limit = sys.maxint
     count = 0
 
     if opts['copies'] and opts['rev']:
         endrev = max(cmdutil.revrange(repo, opts['rev'])) + 1
     else:
         endrev = repo.changelog.count()
     rcache = {}
     ncache = {}
     dcache = []
     def getrenamed(fn, rev, man):
         '''looks up all renames for a file (up to endrev) the first
         time the file is given. It indexes on the changerev and only
         parses the manifest if linkrev != changerev.
         Returns rename info for fn at changerev rev.'''
         if fn not in rcache:
             rcache[fn] = {}
             ncache[fn] = {}
             fl = repo.file(fn)
             for i in xrange(fl.count()):
                 node = fl.node(i)
                 lr = fl.linkrev(node)
                 renamed = fl.renamed(node)
                 rcache[fn][lr] = renamed
                 if renamed:
                     ncache[fn][node] = renamed
                 if lr >= endrev:
                     break
         if rev in rcache[fn]:
             return rcache[fn][rev]
         mr = repo.manifest.rev(man)
         if repo.manifest.parentrevs(mr) != (mr - 1, nullrev):
             return ncache[fn].get(repo.manifest.find(man, fn)[0])
         if not dcache or dcache[0] != man:
             dcache[:] = [man, repo.manifest.readdelta(man)]
         if fn in dcache[1]:
             return ncache[fn].get(dcache[1][fn])
         return None
 
     df = False
     if opts["date"]:
         df = util.matchdate(opts["date"])
 
     displayer = cmdutil.show_changeset(ui, repo, opts, True, matchfn)
     for st, rev, fns in changeiter:
         if st == 'add':
             changenode = repo.changelog.node(rev)
             parents = [p for p in repo.changelog.parentrevs(rev)
                        if p != nullrev]
             if opts['no_merges'] and len(parents) == 2:
                 continue
             if opts['only_merges'] and len(parents) != 2:
                 continue
 
             if df:
                 changes = get(rev)
                 if not df(changes[2][0]):
                     continue
 
             if opts['keyword']:
                 changes = get(rev)
                 miss = 0
                 for k in [kw.lower() for kw in opts['keyword']]:
                     if not (k in changes[1].lower() or
                             k in changes[4].lower() or
                             k in " ".join(changes[3][:20]).lower()):
                         miss = 1
                         break
                 if miss:
                     continue
 
             copies = []
             if opts.get('copies') and rev:
                 mf = get(rev)[0]
                 for fn in get(rev)[3]:
                     rename = getrenamed(fn, rev, mf)
                     if rename:
                         copies.append((fn, rename[0]))
             displayer.show(rev, changenode, copies=copies)
         elif st == 'iter':
             if count == limit: break
             if displayer.flush(rev):
                 count += 1
 
 def manifest(ui, repo, rev=None):
     """output the current or given revision of the project manifest
 
     Print a list of version controlled files for the given revision.
     If no revision is given, the parent of the working directory is used,
     or tip if no revision is checked out.
 
     The manifest is the list of files being version controlled. If no revision
     is given then the first parent of the working directory is used.
 
     With -v flag, print file permissions. With --debug flag, print
     file revision hashes.
     """
 
     m = repo.changectx(rev).manifest()
     files = m.keys()
     files.sort()
 
     for f in files:
         if ui.debugflag:
             ui.write("%40s " % hex(m[f]))
         if ui.verbose:
             ui.write("%3s " % (m.execf(f) and "755" or "644"))
         ui.write("%s\n" % f)
 
 def merge(ui, repo, node=None, force=None):
     """merge working directory with another revision
 
     Merge the contents of the current working directory and the
     requested revision. Files that changed between either parent are
     marked as changed for the next commit and a commit must be
     performed before any further updates are allowed.
 
     If no revision is specified, the working directory's parent is a
     head revision, and the repository contains exactly one other head,
     the other head is merged with by default.  Otherwise, an explicit
     revision to merge with must be provided.
     """
 
     if not node:
         heads = repo.heads()
         if len(heads) > 2:
             raise util.Abort(_('repo has %d heads - '
                                'please merge with an explicit rev') %
                              len(heads))
         if len(heads) == 1:
             raise util.Abort(_('there is nothing to merge - '
                                'use "hg update" instead'))
         parent = repo.dirstate.parents()[0]
         if parent not in heads:
             raise util.Abort(_('working dir not at a head rev - '
                                'use "hg update" or merge with an explicit rev'))
         node = parent == heads[0] and heads[-1] or heads[0]
     return hg.merge(repo, node, force=force)
 
 def outgoing(ui, repo, dest=None, **opts):
     """show changesets not found in destination
 
     Show changesets not found in the specified destination repository or
     the default push location. These are the changesets that would be pushed
     if a push was requested.
 
     See pull for valid destination format details.
     """
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     setremoteconfig(ui, opts)
     revs = None
     if opts['rev']:
         revs = [repo.lookup(rev) for rev in opts['rev']]
 
     other = hg.repository(ui, dest)
     ui.status(_('comparing with %s\n') % dest)
     o = repo.findoutgoing(other, force=opts['force'])
     if not o:
         ui.status(_("no changes found\n"))
         return 1
     o = repo.changelog.nodesbetween(o, revs)[0]
     if opts['newest_first']:
         o.reverse()
     displayer = cmdutil.show_changeset(ui, repo, opts)
     for n in o:
         parents = [p for p in repo.changelog.parents(n) if p != nullid]
         if opts['no_merges'] and len(parents) == 2:
             continue
         displayer.show(changenode=n)
 
 def parents(ui, repo, file_=None, **opts):
     """show the parents of the working dir or revision
 
     Print the working directory's parent revisions.
     """
     rev = opts.get('rev')
     if rev:
         if file_:
             ctx = repo.filectx(file_, changeid=rev)
         else:
             ctx = repo.changectx(rev)
         p = [cp.node() for cp in ctx.parents()]
     else:
         p = repo.dirstate.parents()
 
     displayer = cmdutil.show_changeset(ui, repo, opts)
     for n in p:
         if n != nullid:
             displayer.show(changenode=n)
 
 def paths(ui, repo, search=None):
     """show definition of symbolic path names
 
     Show definition of symbolic path name NAME. If no name is given, show
     definition of available names.
 
     Path names are defined in the [paths] section of /etc/mercurial/hgrc
     and $HOME/.hgrc.  If run inside a repository, .hg/hgrc is used, too.
     """
     if search:
         for name, path in ui.configitems("paths"):
             if name == search:
                 ui.write("%s\n" % path)
                 return
         ui.warn(_("not found!\n"))
         return 1
     else:
         for name, path in ui.configitems("paths"):
             ui.write("%s = %s\n" % (name, path))
 
 def postincoming(ui, repo, modheads, optupdate):
     if modheads == 0:
         return
     if optupdate:
         if modheads == 1:
             return hg.update(repo, repo.changelog.tip()) # update
         else:
             ui.status(_("not updating, since new heads added\n"))
     if modheads > 1:
         ui.status(_("(run 'hg heads' to see heads, 'hg merge' to merge)\n"))
     else:
         ui.status(_("(run 'hg update' to get a working copy)\n"))
 
 def pull(ui, repo, source="default", **opts):
     """pull changes from the specified source
 
     Pull changes from a remote repository to a local one.
 
     This finds all changes from the repository at the specified path
     or URL and adds them to the local repository. By default, this
     does not update the copy of the project in the working directory.
 
     Valid URLs are of the form:
 
       local/filesystem/path (or file://local/filesystem/path)
       http://[user@]host[:port]/[path]
       https://[user@]host[:port]/[path]
       ssh://[user@]host[:port]/[path]
       static-http://host[:port]/[path]
 
     Paths in the local filesystem can either point to Mercurial
     repositories or to bundle files (as created by 'hg bundle' or
     'hg incoming --bundle'). The static-http:// protocol, albeit slow,
     allows access to a Mercurial repository where you simply use a web
     server to publish the .hg directory as static content.
 
     Some notes about using SSH with Mercurial:
     - SSH requires an accessible shell account on the destination machine
       and a copy of hg in the remote path or specified with as remotecmd.
     - path is relative to the remote user's home directory by default.
       Use an extra slash at the start of a path to specify an absolute path:
         ssh://example.com//tmp/repository
     - Mercurial doesn't use its own compression via SSH; the right thing
       to do is to configure it in your ~/.ssh/config, e.g.:
         Host *.mylocalnetwork.example.com
           Compression no
         Host *
           Compression yes
       Alternatively specify "ssh -C" as your ssh command in your hgrc or
       with the --ssh command line option.
     """
     source = ui.expandpath(source)
     setremoteconfig(ui, opts)
 
     other = hg.repository(ui, source)
     ui.status(_('pulling from %s\n') % (source))
     revs = None
     if opts['rev']:
         if 'lookup' in other.capabilities:
             revs = [other.lookup(rev) for rev in opts['rev']]
         else:
             error = _("Other repository doesn't support revision lookup, so a rev cannot be specified.")
             raise util.Abort(error)
     modheads = repo.pull(other, heads=revs, force=opts['force'])
     return postincoming(ui, repo, modheads, opts['update'])
 
 def push(ui, repo, dest=None, **opts):
     """push changes to the specified destination
 
     Push changes from the local repository to the given destination.
 
     This is the symmetrical operation for pull. It helps to move
     changes from the current repository to a different one. If the
     destination is local this is identical to a pull in that directory
     from the current one.
 
     By default, push will refuse to run if it detects the result would
     increase the number of remote heads. This generally indicates the
     the client has forgotten to sync and merge before pushing.
 
     Valid URLs are of the form:
 
       local/filesystem/path (or file://local/filesystem/path)
       ssh://[user@]host[:port]/[path]
       http://[user@]host[:port]/[path]
       https://[user@]host[:port]/[path]
 
     Look at the help text for the pull command for important details
     about ssh:// URLs.
 
     Pushing to http:// and https:// URLs is only possible, if this
     feature is explicitly enabled on the remote Mercurial server.
     """
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     setremoteconfig(ui, opts)
 
     other = hg.repository(ui, dest)
     ui.status('pushing to %s\n' % (dest))
     revs = None
     if opts['rev']:
         revs = [repo.lookup(rev) for rev in opts['rev']]
     r = repo.push(other, opts['force'], revs=revs)
     return r == 0
 
 def rawcommit(ui, repo, *pats, **opts):
     """raw commit interface (DEPRECATED)
 
     (DEPRECATED)
     Lowlevel commit, for use in helper scripts.
 
     This command is not intended to be used by normal users, as it is
     primarily useful for importing from other SCMs.
 
     This command is now deprecated and will be removed in a future
     release, please use debugsetparents and commit instead.
     """
 
     ui.warn(_("(the rawcommit command is deprecated)\n"))
 
     message = logmessage(opts)
 
     files, match, anypats = cmdutil.matchpats(repo, pats, opts)
     if opts['files']:
         files += open(opts['files']).read().splitlines()
 
     parents = [repo.lookup(p) for p in opts['parent']]
 
     try:
         repo.rawcommit(files, message, opts['user'], opts['date'], *parents)
     except ValueError, inst:
         raise util.Abort(str(inst))
 
 def recover(ui, repo):
     """roll back an interrupted transaction
 
     Recover from an interrupted commit or pull.
 
     This command tries to fix the repository status after an interrupted
     operation. It should only be necessary when Mercurial suggests it.
     """
     if repo.recover():
         return hg.verify(repo)
     return 1
 
 def remove(ui, repo, *pats, **opts):
     """remove the specified files on the next commit
 
     Schedule the indicated files for removal from the repository.
 
     This only removes files from the current branch, not from the
     entire project history.  If the files still exist in the working
     directory, they will be deleted from it.  If invoked with --after,
     files that have been manually deleted are marked as removed.
 
     This command schedules the files to be removed at the next commit.
     To undo a remove before that, see hg revert.
 
     Modified files and added files are not removed by default.  To
     remove them, use the -f/--force option.
     """
     names = []
     if not opts['after'] and not pats:
         raise util.Abort(_('no files specified'))
     files, matchfn, anypats = cmdutil.matchpats(repo, pats, opts)
     exact = dict.fromkeys(files)
     mardu = map(dict.fromkeys, repo.status(files=files, match=matchfn))[:5]
     modified, added, removed, deleted, unknown = mardu
     remove, forget = [], []
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts):
         reason = None
         if abs not in deleted and opts['after']:
             reason = _('is still present')
         elif abs in modified and not opts['force']:
             reason = _('is modified (use -f to force removal)')
         elif abs in added:
             if opts['force']:
                 forget.append(abs)
                 continue
             reason = _('has been marked for add (use -f to force removal)')
         elif abs in unknown:
             reason = _('is not managed')
         elif abs in removed:
             continue
         if reason:
             if exact:
                 ui.warn(_('not removing %s: file %s\n') % (rel, reason))
         else:
             if ui.verbose or not exact:
                 ui.status(_('removing %s\n') % rel)
             remove.append(abs)
     repo.forget(forget)
     repo.remove(remove, unlink=not opts['after'])
 
 def rename(ui, repo, *pats, **opts):
     """rename files; equivalent of copy + remove
 
     Mark dest as copies of sources; mark sources for deletion.  If
     dest is a directory, copies are put in that directory.  If dest is
     a file, there can only be one source.
 
     By default, this command copies the contents of files as they
     stand in the working directory.  If invoked with --after, the
     operation is recorded, but no copying is performed.
 
     This command takes effect in the next commit. To undo a rename
     before that, see hg revert.
     """
     wlock = repo.wlock(0)
     errs, copied = docopy(ui, repo, pats, opts, wlock)
     names = []
     for abs, rel, exact in copied:
         if ui.verbose or not exact:
             ui.status(_('removing %s\n') % rel)
         names.append(abs)
     if not opts.get('dry_run'):
         repo.remove(names, True, wlock)
     return errs
 
 def revert(ui, repo, *pats, **opts):
     """revert files or dirs to their states as of some revision
 
     With no revision specified, revert the named files or directories
     to the contents they had in the parent of the working directory.
     This restores the contents of the affected files to an unmodified
     state and unschedules adds, removes, copies, and renames. If the
     working directory has two parents, you must explicitly specify the
     revision to revert to.
 
     Modified files are saved with a .orig suffix before reverting.
     To disable these backups, use --no-backup.
 
     Using the -r option, revert the given files or directories to their
     contents as of a specific revision. This can be helpful to "roll
     back" some or all of a change that should not have been committed.
 
     Revert modifies the working directory.  It does not commit any
     changes, or change the parent of the working directory.  If you
     revert to a revision other than the parent of the working
     directory, the reverted files will thus appear modified
     afterwards.
 
     If a file has been deleted, it is recreated.  If the executable
     mode of a file was changed, it is reset.
 
     If names are given, all files matching the names are reverted.
 
     If no arguments are given, no files are reverted.
     """
 
     if opts["date"]:
         if opts["rev"]:
             raise util.Abort(_("you can't specify a revision and a date"))
         opts["rev"] = cmdutil.finddate(ui, repo, opts["date"])
 
     if not pats and not opts['all']:
         raise util.Abort(_('no files or directories specified; '
                            'use --all to revert the whole repo'))
 
     parent, p2 = repo.dirstate.parents()
     if not opts['rev'] and p2 != nullid:
         raise util.Abort(_('uncommitted merge - please provide a '
                            'specific revision'))
     ctx = repo.changectx(opts['rev'])
     node = ctx.node()
     mf = ctx.manifest()
     if node == parent:
         pmf = mf
     else:
         pmf = None
 
     wlock = repo.wlock()
 
     # need all matching names in dirstate and manifest of target rev,
     # so have to walk both. do not print errors if files exist in one
     # but not other.
 
     names = {}
     target_only = {}
 
     # walk dirstate.
 
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts,
                                              badmatch=mf.has_key):
         names[abs] = (rel, exact)
         if src == 'b':
             target_only[abs] = True
 
     # walk target manifest.
 
     def badmatch(path):
         if path in names:
             return True
         path_ = path + '/'
         for f in names:
             if f.startswith(path_):
                 return True
         return False
 
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts, node=node,
                                              badmatch=badmatch):
         if abs in names or src == 'b':
             continue
         names[abs] = (rel, exact)
         target_only[abs] = True
 
     changes = repo.status(match=names.has_key, wlock=wlock)[:5]
     modified, added, removed, deleted, unknown = map(dict.fromkeys, changes)
 
     revert = ([], _('reverting %s\n'))
     add = ([], _('adding %s\n'))
     remove = ([], _('removing %s\n'))
     forget = ([], _('forgetting %s\n'))
     undelete = ([], _('undeleting %s\n'))
     update = {}
 
     disptable = (
         # dispatch table:
         #   file state
         #   action if in target manifest
         #   action if not in target manifest
         #   make backup if in target manifest
         #   make backup if not in target manifest
         (modified, revert, remove, True, True),
         (added, revert, forget, True, False),
         (removed, undelete, None, False, False),
         (deleted, revert, remove, False, False),
         (unknown, add, None, True, False),
         (target_only, add, None, False, False),
         )
 
     entries = names.items()
     entries.sort()
 
     for abs, (rel, exact) in entries:
         mfentry = mf.get(abs)
         def handle(xlist, dobackup):
             xlist[0].append(abs)
             update[abs] = 1
             if dobackup and not opts['no_backup'] and os.path.exists(rel):
                 bakname = "%s.orig" % rel
                 ui.note(_('saving current version of %s as %s\n') %
                         (rel, bakname))
                 if not opts.get('dry_run'):
                     util.copyfile(rel, bakname)
             if ui.verbose or not exact:
                 ui.status(xlist[1] % rel)
         for table, hitlist, misslist, backuphit, backupmiss in disptable:
             if abs not in table: continue
             # file has changed in dirstate
             if mfentry:
                 handle(hitlist, backuphit)
             elif misslist is not None:
                 handle(misslist, backupmiss)
             else:
                 if exact: ui.warn(_('file not managed: %s\n') % rel)
             break
         else:
             # file has not changed in dirstate
             if node == parent:
                 if exact: ui.warn(_('no changes needed to %s\n') % rel)
                 continue
             if pmf is None:
                 # only need parent manifest in this unlikely case,
                 # so do not read by default
                 pmf = repo.changectx(parent).manifest()
             if abs in pmf:
                 if mfentry:
                     # if version of file is same in parent and target
                     # manifests, do nothing
                     if pmf[abs] != mfentry:
                         handle(revert, False)
                 else:
                     handle(remove, False)
 
     if not opts.get('dry_run'):
         repo.dirstate.forget(forget[0])
         r = hg.revert(repo, node, update.has_key, wlock)
         repo.dirstate.update(add[0], 'a')
         repo.dirstate.update(undelete[0], 'n')
         repo.dirstate.update(remove[0], 'r')
         return r
 
 def rollback(ui, repo):
     """roll back the last transaction in this repository
 
     Roll back the last transaction in this repository, restoring the
     project to its state prior to the transaction.
 
     Transactions are used to encapsulate the effects of all commands
     that create new changesets or propagate existing changesets into a
     repository. For example, the following commands are transactional,
     and their effects can be rolled back:
 
       commit
       import
       pull
       push (with this repository as destination)
       unbundle
 
     This command should be used with care. There is only one level of
     rollback, and there is no way to undo a rollback.
 
     This command is not intended for use on public repositories. Once
     changes are visible for pull by other users, rolling a transaction
     back locally is ineffective (someone else may already have pulled
     the changes). Furthermore, a race is possible with readers of the
     repository; for example an in-progress pull from the repository
     may fail if a rollback is performed.
     """
     repo.rollback()
 
 def root(ui, repo):
     """print the root (top) of the current working dir
 
     Print the root directory of the current repository.
     """
     ui.write(repo.root + "\n")
 
 def serve(ui, repo, **opts):
     """export the repository via HTTP
 
     Start a local HTTP repository browser and pull server.
 
     By default, the server logs accesses to stdout and errors to
     stderr.  Use the "-A" and "-E" options to log to files.
     """
 
     if opts["stdio"]:
         if repo is None:
             raise hg.RepoError(_("There is no Mercurial repository here"
                                  " (.hg not found)"))
         s = sshserver.sshserver(ui, repo)
         s.serve_forever()
 
     parentui = ui.parentui or ui
     optlist = ("name templates style address port ipv6"
                " accesslog errorlog webdir_conf")
     for o in optlist.split():
         if opts[o]:
             parentui.setconfig("web", o, str(opts[o]))
 
     if repo is None and not ui.config("web", "webdir_conf"):
         raise hg.RepoError(_("There is no Mercurial repository here"
                              " (.hg not found)"))
 
     if opts['daemon'] and not opts['daemon_pipefds']:
         rfd, wfd = os.pipe()
         args = sys.argv[:]
         args.append('--daemon-pipefds=%d,%d' % (rfd, wfd))
         pid = os.spawnvp(os.P_NOWAIT | getattr(os, 'P_DETACH', 0),
                          args[0], args)
         os.close(wfd)
         os.read(rfd, 1)
         os._exit(0)
 
     httpd = hgweb.server.create_server(parentui, repo)
 
     if ui.verbose:
         if httpd.port != 80:
             ui.status(_('listening at http://%s:%d/\n') %
                       (httpd.addr, httpd.port))
         else:
             ui.status(_('listening at http://%s/\n') % httpd.addr)
 
     if opts['pid_file']:
         fp = open(opts['pid_file'], 'w')
         fp.write(str(os.getpid()) + '\n')
         fp.close()
 
     if opts['daemon_pipefds']:
         rfd, wfd = [int(x) for x in opts['daemon_pipefds'].split(',')]
         os.close(rfd)
         os.write(wfd, 'y')
         os.close(wfd)
         sys.stdout.flush()
         sys.stderr.flush()
         fd = os.open(util.nulldev, os.O_RDWR)
         if fd != 0: os.dup2(fd, 0)
         if fd != 1: os.dup2(fd, 1)
         if fd != 2: os.dup2(fd, 2)
         if fd not in (0, 1, 2): os.close(fd)
 
     httpd.serve_forever()
 
 def status(ui, repo, *pats, **opts):
     """show changed files in the working directory
 
     Show status of files in the repository.  If names are given, only
     files that match are shown.  Files that are clean or ignored, are
     not listed unless -c (clean), -i (ignored) or -A is given.
 
     NOTE: status may appear to disagree with diff if permissions have
     changed or a merge has occurred. The standard diff format does not
     report permission changes and diff only reports changes relative
     to one merge parent.
 
     If one revision is given, it is used as the base revision.
     If two revisions are given, the difference between them is shown.
 
     The codes used to show the status of files are:
     M = modified
     A = added
     R = removed
     C = clean
     ! = deleted, but still tracked
     ? = not tracked
     I = ignored (not shown by default)
       = the previous added file was copied from here
     """
 
     all = opts['all']
     node1, node2 = cmdutil.revpair(repo, opts.get('rev'))
 
     files, matchfn, anypats = cmdutil.matchpats(repo, pats, opts)
     cwd = (pats and repo.getcwd()) or ''
     modified, added, removed, deleted, unknown, ignored, clean = [
         n for n in repo.status(node1=node1, node2=node2, files=files,
                              match=matchfn,
                              list_ignored=all or opts['ignored'],
                              list_clean=all or opts['clean'])]
 
     changetypes = (('modified', 'M', modified),
                    ('added', 'A', added),
                    ('removed', 'R', removed),
                    ('deleted', '!', deleted),
                    ('unknown', '?', unknown),
                    ('ignored', 'I', ignored))
 
     explicit_changetypes = changetypes + (('clean', 'C', clean),)
 
     end = opts['print0'] and '\0' or '\n'
 
     for opt, char, changes in ([ct for ct in explicit_changetypes
                                 if all or opts[ct[0]]]
                                or changetypes):
         if opts['no_status']:
             format = "%%s%s" % end
         else:
             format = "%s %%s%s" % (char, end)
 
         for f in changes:
             ui.write(format % util.pathto(repo.root, cwd, f))
             if ((all or opts.get('copies')) and not opts.get('no_status')):
                 copied = repo.dirstate.copied(f)
                 if copied:
                     ui.write('  %s%s' % (util.pathto(repo.root, cwd, copied),
                                          end))
 
 def tag(ui, repo, name, rev_=None, **opts):
     """add a tag for the current or given revision
 
     Name a particular revision using <name>.
 
     Tags are used to name particular revisions of the repository and are
     very useful to compare different revision, to go back to significant
     earlier versions or to mark branch points as releases, etc.
 
     If no revision is given, the parent of the working directory is used,
     or tip if no revision is checked out.
 
     To facilitate version control, distribution, and merging of tags,
     they are stored as a file named ".hgtags" which is managed
     similarly to other project files and can be hand-edited if
     necessary.  The file '.hg/localtags' is used for local tags (not
     shared among repositories).
     """
     if name in ['tip', '.', 'null']:
         raise util.Abort(_("the name '%s' is reserved") % name)
     if rev_ is not None:
         ui.warn(_("use of 'hg tag NAME [REV]' is deprecated, "
                   "please use 'hg tag [-r REV] NAME' instead\n"))
         if opts['rev']:
             raise util.Abort(_("use only one form to specify the revision"))
     if opts['rev'] and opts['remove']:
         raise util.Abort(_("--rev and --remove are incompatible"))
     if opts['rev']:
         rev_ = opts['rev']
     message = opts['message']
     if opts['remove']:
         rev_ = nullid
         if not message:
             message = _('Removed tag %s') % name
     if not rev_ and repo.dirstate.parents()[1] != nullid:
         raise util.Abort(_('uncommitted merge - please provide a '
                            'specific revision'))
     r = repo.changectx(rev_).node()
 
     if not message:
         message = _('Added tag %s for changeset %s') % (name, short(r))
 
     repo.tag(name, r, message, opts['local'], opts['user'], opts['date'])
 
 def tags(ui, repo):
     """list repository tags
 
     List the repository tags.
 
     This lists both regular and local tags.
     """
 
     l = repo.tagslist()
     l.reverse()
     hexfunc = ui.debugflag and hex or short
     for t, n in l:
         try:
 	    hn = hexfunc(n)
             r = "%5d:%s" % (repo.changelog.rev(n), hexfunc(n))
         except revlog.LookupError:
             r = "    ?:%s" % hn
         if ui.quiet:
             ui.write("%s\n" % t)
         else:
             spaces = " " * (30 - util.locallen(t))
             ui.write("%s%s %s\n" % (t, spaces, r))
 
 def tip(ui, repo, **opts):
     """show the tip revision
 
     Show the tip revision.
     """
     cmdutil.show_changeset(ui, repo, opts).show(nullrev+repo.changelog.count())
 
 def unbundle(ui, repo, fname, **opts):
     """apply a changegroup file
 
     Apply a compressed changegroup file generated by the bundle
     command.
     """
     if os.path.exists(fname):
         f = open(fname, "rb")
     else:
         f = urllib.urlopen(fname)
     gen = changegroup.readbundle(f, fname)
     modheads = repo.addchangegroup(gen, 'unbundle', 'bundle:' + fname)
     return postincoming(ui, repo, modheads, opts['update'])
 
 def update(ui, repo, node=None, clean=False, date=None):
     """update working directory
 
     Update the working directory to the specified revision, or the
     tip of the current branch if none is specified.
 
     If there are no outstanding changes in the working directory and
     there is a linear relationship between the current version and the
     requested version, the result is the requested version.
 
     To merge the working directory with another revision, use the
     merge command.
 
     By default, update will refuse to run if doing so would require
     discarding local changes.
     """
     if date:
         if node:
             raise util.Abort(_("you can't specify a revision and a date"))
         node = cmdutil.finddate(ui, repo, date)
 
     if clean:
         return hg.clean(repo, node)
     else:
         return hg.update(repo, node)
 
 def verify(ui, repo):
     """verify the integrity of the repository
 
     Verify the integrity of the current repository.
 
     This will perform an extensive check of the repository's
     integrity, validating the hashes and checksums of each entry in
     the changelog, manifest, and tracked files, as well as the
     integrity of their crosslinks and indices.
     """
     return hg.verify(repo)
 
 def version_(ui):
     """output version and copyright information"""
     ui.write(_("Mercurial Distributed SCM (version %s)\n")
              % version.get_version())
     ui.status(_(
         "\nCopyright (C) 2005, 2006 Matt Mackall <[e-mail]>\n"
         "This is free software; see the source for copying conditions. "
         "There is NO\nwarranty; "
         "not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"
     ))
 
 # Command options and aliases are listed here, alphabetically
 
 globalopts = [
     ('R', 'repository', '',
      _('repository root directory or symbolic path name')),
     ('', 'cwd', '', _('change working directory')),
     ('y', 'noninteractive', None,
      _('do not prompt, assume \'yes\' for any required answers')),
     ('q', 'quiet', None, _('suppress output')),
     ('v', 'verbose', None, _('enable additional output')),
     ('', 'config', [], _('set/override config option')),
     ('', 'debug', None, _('enable debugging output')),
     ('', 'debugger', None, _('start debugger')),
     ('', 'encoding', util._encoding, _('set the charset encoding')),
     ('', 'encodingmode', util._encodingmode, _('set the charset encoding mode')),
     ('', 'lsprof', None, _('print improved command execution profile')),
     ('', 'traceback', None, _('print traceback on exception')),
     ('', 'time', None, _('time how long the command takes')),
     ('', 'profile', None, _('print command execution profile')),
     ('', 'version', None, _('output version information and exit')),
     ('h', 'help', None, _('display help and exit')),
 ]
 
 dryrunopts = [('n', 'dry-run', None,
                _('do not perform actions, just print output'))]
 
 remoteopts = [
     ('e', 'ssh', '', _('specify ssh command to use')),
     ('', 'remotecmd', '', _('specify hg command to run on the remote side')),
 ]
 
 walkopts = [
     ('I', 'include', [], _('include names matching the given patterns')),
     ('X', 'exclude', [], _('exclude names matching the given patterns')),
 ]
 
 commitopts = [
     ('m', 'message', '', _('use <text> as commit message')),
     ('l', 'logfile', '', _('read commit message from <file>')),
 ]
 
 table = {
     "^add": (add, walkopts + dryrunopts, _('hg add [OPTION]... [FILE]...')),
     "addremove":
         (addremove,
          [('s', 'similarity', '',
            _('guess renamed files by similarity (0<=s<=100)')),
          ] + walkopts + dryrunopts,
          _('hg addremove [OPTION]... [FILE]...')),
     "^annotate":
         (annotate,
          [('r', 'rev', '', _('annotate the specified revision')),
           ('f', 'follow', None, _('follow file copies and renames')),
           ('a', 'text', None, _('treat all files as text')),
           ('u', 'user', None, _('list the author')),
           ('d', 'date', None, _('list the date')),
           ('n', 'number', None, _('list the revision number (default)')),
           ('c', 'changeset', None, _('list the changeset')),
          ] + walkopts,
          _('hg annotate [-r REV] [-f] [-a] [-u] [-d] [-n] [-c] FILE...')),
     "archive":
         (archive,
          [('', 'no-decode', None, _('do not pass files through decoders')),
           ('p', 'prefix', '', _('directory prefix for files in archive')),
           ('r', 'rev', '', _('revision to distribute')),
           ('t', 'type', '', _('type of distribution to create')),
          ] + walkopts,
          _('hg archive [OPTION]... DEST')),
     "backout":
         (backout,
          [('', 'merge', None,
            _('merge with old dirstate parent after backout')),
           ('d', 'date', '', _('record datecode as commit date')),
           ('', 'parent', '', _('parent to choose when backing out merge')),
           ('u', 'user', '', _('record user as committer')),
          ] + walkopts + commitopts,
          _('hg backout [OPTION]... REV')),
     "branch": (branch,
                [('f', 'force', None,
                  _('set branch name even if it shadows an existing branch'))],
                 _('hg branch [NAME]')),
     "branches": (branches, [], _('hg branches')),
     "bundle":
         (bundle,
          [('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('r', 'rev', [],
            _('a changeset you would like to bundle')),
           ('', 'base', [],
            _('a base changeset to specify instead of a destination')),
          ] + remoteopts,
          _('hg bundle [-f] [-r REV]... [--base REV]... FILE [DEST]')),
     "cat":
         (cat,
          [('o', 'output', '', _('print output to file with formatted name')),
           ('r', 'rev', '', _('print the given revision')),
          ] + walkopts,
          _('hg cat [OPTION]... FILE...')),
     "^clone":
         (clone,
          [('U', 'noupdate', None, _('do not update the new working directory')),
           ('r', 'rev', [],
            _('a changeset you would like to have after cloning')),
           ('', 'pull', None, _('use pull protocol to copy metadata')),
           ('', 'uncompressed', None,
            _('use uncompressed transfer (fast over LAN)')),
          ] + remoteopts,
          _('hg clone [OPTION]... SOURCE [DEST]')),
     "^commit|ci":
         (commit,
          [('A', 'addremove', None,
            _('mark new/missing files as added/removed before committing')),
           ('d', 'date', '', _('record datecode as commit date')),
           ('u', 'user', '', _('record user as commiter')),
          ] + walkopts + commitopts,
          _('hg commit [OPTION]... [FILE]...')),
     "copy|cp":
         (copy,
          [('A', 'after', None, _('record a copy that has already occurred')),
           ('f', 'force', None,
            _('forcibly copy over an existing managed file')),
          ] + walkopts + dryrunopts,
          _('hg copy [OPTION]... [SOURCE]... DEST')),
     "debugancestor": (debugancestor, [], _('debugancestor INDEX REV1 REV2')),
     "debugcomplete":
         (debugcomplete,
          [('o', 'options', None, _('show the command options'))],
          _('debugcomplete [-o] CMD')),
     "debuginstall": (debuginstall, [], _('debuginstall')),
     "debugrebuildstate":
         (debugrebuildstate,
          [('r', 'rev', '', _('revision to rebuild to'))],
          _('debugrebuildstate [-r REV] [REV]')),
     "debugcheckstate": (debugcheckstate, [], _('debugcheckstate')),
     "debugsetparents": (debugsetparents, [], _('debugsetparents REV1 [REV2]')),
     "debugstate": (debugstate, [], _('debugstate')),
     "debugdate":
         (debugdate,
          [('e', 'extended', None, _('try extended date formats'))],
          _('debugdate [-e] DATE [RANGE]')),
     "debugdata": (debugdata, [], _('debugdata FILE REV')),
     "debugindex": (debugindex, [], _('debugindex FILE')),
     "debugindexdot": (debugindexdot, [], _('debugindexdot FILE')),
     "debugrename": (debugrename, [], _('debugrename FILE [REV]')),
     "debugwalk": (debugwalk, walkopts, _('debugwalk [OPTION]... [FILE]...')),
     "^diff":
         (diff,
          [('r', 'rev', [], _('revision')),
           ('a', 'text', None, _('treat all files as text')),
           ('p', 'show-function', None,
            _('show which function each change is in')),
           ('g', 'git', None, _('use git extended diff format')),
           ('', 'nodates', None, _("don't include dates in diff headers")),
           ('w', 'ignore-all-space', None,
            _('ignore white space when comparing lines')),
           ('b', 'ignore-space-change', None,
            _('ignore changes in the amount of white space')),
           ('B', 'ignore-blank-lines', None,
            _('ignore changes whose lines are all blank')),
          ] + walkopts,
          _('hg diff [OPTION]... [-r REV1 [-r REV2]] [FILE]...')),
     "^export":
         (export,
          [('o', 'output', '', _('print output to file with formatted name')),
           ('a', 'text', None, _('treat all files as text')),
           ('g', 'git', None, _('use git extended diff format')),
           ('', 'nodates', None, _("don't include dates in diff headers")),
           ('', 'switch-parent', None, _('diff against the second parent'))],
          _('hg export [OPTION]... [-o OUTFILESPEC] REV...')),
     "grep":
         (grep,
          [('0', 'print0', None, _('end fields with NUL')),
           ('', 'all', None, _('print all revisions that match')),
           ('f', 'follow', None,
            _('follow changeset history, or file history across copies and renames')),
           ('i', 'ignore-case', None, _('ignore case when matching')),
           ('l', 'files-with-matches', None,
            _('print only filenames and revs that match')),
           ('n', 'line-number', None, _('print matching line numbers')),
           ('r', 'rev', [], _('search in given revision range')),
           ('u', 'user', None, _('print user who committed change')),
          ] + walkopts,
          _('hg grep [OPTION]... PATTERN [FILE]...')),
     "heads":
         (heads,
          [('', 'style', '', _('display using template map file')),
           ('r', 'rev', '', _('show only heads which are descendants of rev')),
           ('', 'template', '', _('display with template'))],
          _('hg heads [-r REV]')),
     "help": (help_, [], _('hg help [COMMAND]')),
     "identify|id": (identify, [], _('hg identify')),
     "import|patch":
         (import_,
          [('p', 'strip', 1,
            _('directory strip option for patch. This has the same\n'
              'meaning as the corresponding patch option')),
           ('b', 'base', '', _('base path')),
           ('f', 'force', None,
            _('skip check for outstanding uncommitted changes'))] + commitopts,
          _('hg import [-p NUM] [-m MESSAGE] [-f] PATCH...')),
     "incoming|in": (incoming,
          [('M', 'no-merges', None, _('do not show merges')),
           ('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('', 'style', '', _('display using template map file')),
           ('n', 'newest-first', None, _('show newest record first')),
           ('', 'bundle', '', _('file to store the bundles into')),
           ('p', 'patch', None, _('show patch')),
           ('r', 'rev', [], _('a specific revision up to which you would like to pull')),
           ('', 'template', '', _('display with template')),
          ] + remoteopts,
          _('hg incoming [-p] [-n] [-M] [-f] [-r REV]...'
            ' [--bundle FILENAME] [SOURCE]')),
     "^init":
         (init,
          remoteopts,
          _('hg init [-e CMD] [--remotecmd CMD] [DEST]')),
     "locate":
         (locate,
          [('r', 'rev', '', _('search the repository as it stood at rev')),
           ('0', 'print0', None,
            _('end filenames with NUL, for use with xargs')),
           ('f', 'fullpath', None,
            _('print complete paths from the filesystem root')),
          ] + walkopts,
          _('hg locate [OPTION]... [PATTERN]...')),
     "^log|history":
         (log,
          [('f', 'follow', None,
            _('follow changeset history, or file history across copies and renames')),
           ('', 'follow-first', None,
            _('only follow the first parent of merge changesets')),
           ('d', 'date', '', _('show revs matching date spec')),
           ('C', 'copies', None, _('show copied files')),
           ('k', 'keyword', [], _('search for a keyword')),
           ('l', 'limit', '', _('limit number of changes displayed')),
           ('r', 'rev', [], _('show the specified revision or range')),
           ('', 'removed', None, _('include revs where files were removed')),
           ('M', 'no-merges', None, _('do not show merges')),
           ('', 'style', '', _('display using template map file')),
           ('m', 'only-merges', None, _('show only merges')),
           ('p', 'patch', None, _('show patch')),
           ('P', 'prune', [], _('do not display revision or any of its ancestors')),
           ('', 'template', '', _('display with template')),
          ] + walkopts,
          _('hg log [OPTION]... [FILE]')),
     "manifest": (manifest, [], _('hg manifest [REV]')),
     "^merge":
         (merge,
          [('f', 'force', None, _('force a merge with outstanding changes'))],
          _('hg merge [-f] [REV]')),
     "outgoing|out": (outgoing,
          [('M', 'no-merges', None, _('do not show merges')),
           ('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('p', 'patch', None, _('show patch')),
           ('', 'style', '', _('display using template map file')),
           ('r', 'rev', [], _('a specific revision you would like to push')),
           ('n', 'newest-first', None, _('show newest record first')),
           ('', 'template', '', _('display with template')),
          ] + remoteopts,
          _('hg outgoing [-M] [-p] [-n] [-f] [-r REV]... [DEST]')),
     "^parents":
         (parents,
          [('r', 'rev', '', _('show parents from the specified rev')),
           ('', 'style', '', _('display using template map file')),
           ('', 'template', '', _('display with template'))],
          _('hg parents [-r REV] [FILE]')),
     "paths": (paths, [], _('hg paths [NAME]')),
     "^pull":
         (pull,
          [('u', 'update', None,
            _('update to new tip if changesets were pulled')),
           ('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('r', 'rev', [],
            _('a specific revision up to which you would like to pull')),
          ] + remoteopts,
          _('hg pull [-u] [-f] [-r REV]... [-e CMD] [--remotecmd CMD] [SOURCE]')),
     "^push":
         (push,
          [('f', 'force', None, _('force push')),
           ('r', 'rev', [], _('a specific revision you would like to push')),
          ] + remoteopts,
          _('hg push [-f] [-r REV]... [-e CMD] [--remotecmd CMD] [DEST]')),
     "debugrawcommit|rawcommit":
         (rawcommit,
          [('p', 'parent', [], _('parent')),
           ('d', 'date', '', _('date code')),
           ('u', 'user', '', _('user')),
           ('F', 'files', '', _('file list'))
           ] + commitopts,
          _('hg debugrawcommit [OPTION]... [FILE]...')),
     "recover": (recover, [], _('hg recover')),
     "^remove|rm":
         (remove,
          [('A', 'after', None, _('record remove that has already occurred')),
           ('f', 'force', None, _('remove file even if modified')),
          ] + walkopts,
          _('hg remove [OPTION]... FILE...')),
     "rename|mv":
         (rename,
          [('A', 'after', None, _('record a rename that has already occurred')),
           ('f', 'force', None,
            _('forcibly copy over an existing managed file')),
          ] + walkopts + dryrunopts,
          _('hg rename [OPTION]... SOURCE... DEST')),
     "^revert":
         (revert,
          [('a', 'all', None, _('revert all changes when no arguments given')),
           ('d', 'date', '', _('tipmost revision matching date')),
           ('r', 'rev', '', _('revision to revert to')),
           ('', 'no-backup', None, _('do not save backup copies of files')),
          ] + walkopts + dryrunopts,
          _('hg revert [OPTION]... [-r REV] [NAME]...')),
     "rollback": (rollback, [], _('hg rollback')),
     "root": (root, [], _('hg root')),
     "showconfig|debugconfig":
         (showconfig,
          [('u', 'untrusted', None, _('show untrusted configuration options'))],
          _('showconfig [-u] [NAME]...')),
     "^serve":
         (serve,
          [('A', 'accesslog', '', _('name of access log file to write to')),
           ('d', 'daemon', None, _('run server in background')),
           ('', 'daemon-pipefds', '', _('used internally by daemon mode')),
           ('E', 'errorlog', '', _('name of error log file to write to')),
           ('p', 'port', 0, _('port to use (default: 8000)')),
           ('a', 'address', '', _('address to use')),
           ('n', 'name', '',
            _('name to show in web pages (default: working dir)')),
           ('', 'webdir-conf', '', _('name of the webdir config file'
                                     ' (serve more than one repo)')),
           ('', 'pid-file', '', _('name of file to write process ID to')),
           ('', 'stdio', None, _('for remote clients')),
           ('t', 'templates', '', _('web templates to use')),
           ('', 'style', '', _('template style to use')),
           ('6', 'ipv6', None, _('use IPv6 in addition to IPv4'))],
          _('hg serve [OPTION]...')),
     "^status|st":
         (status,
          [('A', 'all', None, _('show status of all files')),
           ('m', 'modified', None, _('show only modified files')),
           ('a', 'added', None, _('show only added files')),
           ('r', 'removed', None, _('show only removed files')),
           ('d', 'deleted', None, _('show only deleted (but tracked) files')),
           ('c', 'clean', None, _('show only files without changes')),
           ('u', 'unknown', None, _('show only unknown (not tracked) files')),
           ('i', 'ignored', None, _('show only ignored files')),
           ('n', 'no-status', None, _('hide status prefix')),
           ('C', 'copies', None, _('show source of copied files')),
           ('0', 'print0', None,
            _('end filenames with NUL, for use with xargs')),
           ('', 'rev', [], _('show difference from revision')),
          ] + walkopts,
          _('hg status [OPTION]... [FILE]...')),
     "tag":
         (tag,
          [('l', 'local', None, _('make the tag local')),
           ('m', 'message', '', _('message for tag commit log entry')),
           ('d', 'date', '', _('record datecode as commit date')),
           ('u', 'user', '', _('record user as commiter')),
           ('r', 'rev', '', _('revision to tag')),
           ('', 'remove', None, _('remove a tag'))],
          _('hg tag [-l] [-m TEXT] [-d DATE] [-u USER] [-r REV] NAME')),
     "tags": (tags, [], _('hg tags')),
     "tip":
         (tip,
          [('', 'style', '', _('display using template map file')),
           ('p', 'patch', None, _('show patch')),
           ('', 'template', '', _('display with template'))],
          _('hg tip [-p]')),
     "unbundle":
         (unbundle,
          [('u', 'update', None,
            _('update to new tip if changesets were unbundled'))],
          _('hg unbundle [-u] FILE')),
     "^update|up|checkout|co":
         (update,
          [('C', 'clean', None, _('overwrite locally modified files')),
           ('d', 'date', '', _('tipmost revision matching date'))],
          _('hg update [-C] [-d DATE] [REV]')),
     "verify": (verify, [], _('hg verify')),
     "version": (version_, [], _('hg version')),
 }
 
 norepo = ("clone init version help debugancestor debugcomplete debugdata"
           " debugindex debugindexdot debugdate debuginstall")
 optionalrepo = ("paths serve showconfig")
 
 def findpossible(ui, cmd):
     """
     Return cmd -> (aliases, command table entry)
     for each matching command.
     Return debug commands (or their aliases) only if no normal command matches.
     """
     choice = {}
     debugchoice = {}
     for e in table.keys():
         aliases = e.lstrip("^").split("|")
         found = None
         if cmd in aliases:
             found = cmd
         elif not ui.config("ui", "strict"):
             for a in aliases:
                 if a.startswith(cmd):
                     found = a
                     break
         if found is not None:
             if aliases[0].startswith("debug") or found.startswith("debug"):
                 debugchoice[found] = (aliases, table[e])
             else:
                 choice[found] = (aliases, table[e])
 
     if not choice and debugchoice:
         choice = debugchoice
 
     return choice
 
 def findcmd(ui, cmd):
     """Return (aliases, command table entry) for command string."""
     choice = findpossible(ui, cmd)
 
     if choice.has_key(cmd):
         return choice[cmd]
 
     if len(choice) > 1:
         clist = choice.keys()
         clist.sort()
         raise AmbiguousCommand(cmd, clist)
 
     if choice:
         return choice.values()[0]
 
     raise UnknownCommand(cmd)
 
 def catchterm(*args):
     raise util.SignalInterrupt
 
 def run():
     sys.exit(dispatch(sys.argv[1:]))
 
 class ParseError(Exception):
     """Exception raised on errors in parsing the command line."""
 
 def parse(ui, args):
     options = {}
     cmdoptions = {}
 
     try:
         args = fancyopts.fancyopts(args, globalopts, options)
     except fancyopts.getopt.GetoptError, inst:
         raise ParseError(None, inst)
 
     if args:
         cmd, args = args[0], args[1:]
         aliases, i = findcmd(ui, cmd)
         cmd = aliases[0]
         defaults = ui.config("defaults", cmd)
         if defaults:
             args = shlex.split(defaults) + args
         c = list(i[1])
     else:
         cmd = None
         c = []
 
     # combine global options into local
     for o in globalopts:
         c.append((o[0], o[1], options[o[1]], o[3]))
 
     try:
         args = fancyopts.fancyopts(args, c, cmdoptions)
     except fancyopts.getopt.GetoptError, inst:
         raise ParseError(cmd, inst)
 
     # separate global options back out
     for o in globalopts:
         n = o[1]
         options[n] = cmdoptions[n]
         del cmdoptions[n]
 
     return (cmd, cmd and i[0] or None, args, options, cmdoptions)
 
 external = {}
 
 def findext(name):
     '''return module with given extension name'''
     try:
         return sys.modules[external[name]]
     except KeyError:
         for k, v in external.iteritems():
             if k.endswith('.' + name) or k.endswith('/' + name) or v == name:
                 return sys.modules[v]
         raise KeyError(name)
 
 def load_extensions(ui):
     added = []
     for ext_name, load_from_name in ui.extensions():
         if ext_name in external:
             continue
         try:
             if load_from_name:
                 # the module will be loaded in sys.modules
                 # choose an unique name so that it doesn't
                 # conflicts with other modules
                 module_name = "hgext_%s" % ext_name.replace('.', '_')
                 mod = imp.load_source(module_name, load_from_name)
             else:
                 def importh(name):
                     mod = __import__(name)
                     components = name.split('.')
                     for comp in components[1:]:
                         mod = getattr(mod, comp)
                     return mod
                 try:
                     mod = importh("hgext.%s" % ext_name)
                 except ImportError:
                     mod = importh(ext_name)
             external[ext_name] = mod.__name__
             added.append((mod, ext_name))
         except (util.SignalInterrupt, KeyboardInterrupt):
             raise
         except Exception, inst:
             ui.warn(_("*** failed to import extension %s: %s\n") %
                     (ext_name, inst))
             if ui.print_exc():
                 return 1
 
     for mod, name in added:
         uisetup = getattr(mod, 'uisetup', None)
         if uisetup:
             uisetup(ui)
         reposetup = getattr(mod, 'reposetup', None)
         if reposetup:
             hg.repo_setup_hooks.append(reposetup)
         cmdtable = getattr(mod, 'cmdtable', {})
         overrides = [cmd for cmd in cmdtable if cmd in table]
         if overrides:
             ui.warn(_("extension '%s' overrides commands: %s\n")
                     % (name, " ".join(overrides)))
         table.update(cmdtable)
 
 def parseconfig(config):
     """parse the --config options from the command line"""
     parsed = []
     for cfg in config:
         try:
             name, value = cfg.split('=', 1)
             section, name = name.split('.', 1)
             if not section or not name:
                 raise IndexError
             parsed.append((section, name, value))
         except (IndexError, ValueError):
             raise util.Abort(_('malformed --config option: %s') % cfg)
     return parsed
 
 def dispatch(args):
     for name in 'SIGBREAK', 'SIGHUP', 'SIGTERM':
         num = getattr(signal, name, None)
         if num: signal.signal(num, catchterm)
 
     try:
         u = ui.ui(traceback='--traceback' in sys.argv[1:])
     except util.Abort, inst:
         sys.stderr.write(_("abort: %s\n") % inst)
         return -1
 
     load_extensions(u)
     u.addreadhook(load_extensions)
 
     try:
         cmd, func, args, options, cmdoptions = parse(u, args)
         if options["encoding"]:
             util._encoding = options["encoding"]
         if options["encodingmode"]:
             util._encodingmode = options["encodingmode"]
         if options["time"]:
             def get_times():
                 t = os.times()
                 if t[4] == 0.0: # Windows leaves this as zero, so use time.clock()
                     t = (t[0], t[1], t[2], t[3], time.clock())
                 return t
             s = get_times()
             def print_time():
                 t = get_times()
                 u.warn(_("Time: real %.3f secs (user %.3f+%.3f sys %.3f+%.3f)\n") %
                     (t[4]-s[4], t[0]-s[0], t[2]-s[2], t[1]-s[1], t[3]-s[3]))
             atexit.register(print_time)
 
         # enter the debugger before command execution
         if options['debugger']:
             pdb.set_trace()
 
         try:
             if options['cwd']:
                 os.chdir(options['cwd'])
 
             u.updateopts(options["verbose"], options["debug"], options["quiet"],
                          not options["noninteractive"], options["traceback"],
                          parseconfig(options["config"]))
 
             path = u.expandpath(options["repository"]) or ""
             repo = path and hg.repository(u, path=path) or None
             if repo and not repo.local():
                 raise util.Abort(_("repository '%s' is not local") % path)
 
             if options['help']:
                 return help_(u, cmd, options['version'])
             elif options['version']:
                 return version_(u)
             elif not cmd:
                 return help_(u, 'shortlist')
 
             if cmd not in norepo.split():
                 try:
                     if not repo:
                         repo = hg.repository(u, path=path)
                     u = repo.ui
                 except hg.RepoError:
                     if cmd not in optionalrepo.split():
                         raise
                 d = lambda: func(u, repo, *args, **cmdoptions)
             else:
                 d = lambda: func(u, *args, **cmdoptions)
 
             try:
                 if options['profile']:
                     import hotshot, hotshot.stats
                     prof = hotshot.Profile("hg.prof")
                     try:
                         try:
                             return prof.runcall(d)
                         except:
                             try:
                                 u.warn(_('exception raised - generating '
                                          'profile anyway\n'))
                             except:
                                 pass
                             raise
                     finally:
                         prof.close()
                         stats = hotshot.stats.load("hg.prof")
                         stats.strip_dirs()
                         stats.sort_stats('time', 'calls')
                         stats.print_stats(40)
                 elif options['lsprof']:
                     try:
                         from mercurial import lsprof
                     except ImportError:
                         raise util.Abort(_(
                             'lsprof not available - install from '
                             'http://codespeak.net/svn/user/arigo/hack/misc/lsprof/'))
                     p = lsprof.Profiler()
                     p.enable(subcalls=True)
                     try:
                         return d()
                     finally:
                         p.disable()
                         stats = lsprof.Stats(p.getstats())
                         stats.sort()
                         stats.pprint(top=10, file=sys.stderr, climit=5)
                 else:
                     return d()
             finally:
                 u.flush()
         except:
             # enter the debugger when we hit an exception
             if options['debugger']:
                 pdb.post_mortem(sys.exc_info()[2])
             u.print_exc()
             raise
     except ParseError, inst:
         if inst.args[0]:
             u.warn(_("hg %s: %s\n") % (inst.args[0], inst.args[1]))
             help_(u, inst.args[0])
         else:
             u.warn(_("hg: %s\n") % inst.args[1])
             help_(u, 'shortlist')
     except AmbiguousCommand, inst:
         u.warn(_("hg: command '%s' is ambiguous:\n    %s\n") %
                 (inst.args[0], " ".join(inst.args[1])))
     except UnknownCommand, inst:
         u.warn(_("hg: unknown command '%s'\n") % inst.args[0])
         help_(u, 'shortlist')
     except hg.RepoError, inst:
         u.warn(_("abort: %s!\n") % inst)
     except lock.LockHeld, inst:
         if inst.errno == errno.ETIMEDOUT:
             reason = _('timed out waiting for lock held by %s') % inst.locker
         else:
             reason = _('lock held by %s') % inst.locker
         u.warn(_("abort: %s: %s\n") % (inst.desc or inst.filename, reason))
     except lock.LockUnavailable, inst:
         u.warn(_("abort: could not lock %s: %s\n") %
                (inst.desc or inst.filename, inst.strerror))
     except revlog.RevlogError, inst:
         u.warn(_("abort: %s!\n") % inst)
     except util.SignalInterrupt:
         u.warn(_("killed!\n"))
     except KeyboardInterrupt:
         try:
             u.warn(_("interrupted!\n"))
         except IOError, inst:
             if inst.errno == errno.EPIPE:
                 if u.debugflag:
                     u.warn(_("\nbroken pipe\n"))
             else:
                 raise
     except socket.error, inst:
         u.warn(_("abort: %s\n") % inst[1])
     except IOError, inst:
         if hasattr(inst, "code"):
             u.warn(_("abort: %s\n") % inst)
         elif hasattr(inst, "reason"):
             try: # usually it is in the form (errno, strerror)
                 reason = inst.reason.args[1]
             except: # it might be anything, for example a string
                 reason = inst.reason
             u.warn(_("abort: error: %s\n") % reason)
         elif hasattr(inst, "args") and inst[0] == errno.EPIPE:
             if u.debugflag:
                 u.warn(_("broken pipe\n"))
         elif getattr(inst, "strerror", None):
             if getattr(inst, "filename", None):
                 u.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename))
             else:
                 u.warn(_("abort: %s\n") % inst.strerror)
         else:
             raise
     except OSError, inst:
         if getattr(inst, "filename", None):
             u.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename))
         else:
             u.warn(_("abort: %s\n") % inst.strerror)
     except util.UnexpectedOutput, inst:
         u.warn(_("abort: %s") % inst[0])
         if not isinstance(inst[1], basestring):
             u.warn(" %r\n" % (inst[1],))
         elif not inst[1]:
             u.warn(_(" empty string\n"))
         else:
             u.warn("\n%r\n" % util.ellipsis(inst[1]))
     except util.Abort, inst:
         u.warn(_("abort: %s\n") % inst)
     except TypeError, inst:
         # was this an argument error?
         tb = traceback.extract_tb(sys.exc_info()[2])
         if len(tb) > 2: # no
             raise
         u.debug(inst, "\n")
         u.warn(_("%s: invalid arguments\n") % cmd)
         help_(u, cmd)
     except SystemExit, inst:
         # Commands shouldn't sys.exit directly, but give a return code.
         # Just in case catch this and and pass exit code to caller.
         return inst.code
     except:
         u.warn(_("** unknown exception encountered, details follow\n"))
         u.warn(_("** report bug details to "
                  "http://www.selenic.com/mercurial/bts\n"))
         u.warn(_("** or [e-mail]\n"))
         u.warn(_("** Mercurial Distributed SCM (version %s)\n")
                % version.get_version())
         raise
 
     return -1

mercurial/filelog.py

@@ -1,84 +1,83
 # filelog.py - file history class for mercurial
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from revlog import *
 import os
 
 class filelog(revlog):
-    def __init__(self, opener, path, defversion=REVLOG_DEFAULT_VERSION):
+    def __init__(self, opener, path):
         revlog.__init__(self, opener,
-                        "/".join(("data", self.encodedir(path + ".i"))),
-                        defversion)
+                        "/".join(("data", self.encodedir(path + ".i"))))
 
     # This avoids a collision between a file named foo and a dir named
     # foo.i or foo.d
     def encodedir(self, path):
         return (path
                 .replace(".hg/", ".hg.hg/")
                 .replace(".i/", ".i.hg/")
                 .replace(".d/", ".d.hg/"))
 
     def decodedir(self, path):
         return (path
                 .replace(".d.hg/", ".d/")
                 .replace(".i.hg/", ".i/")
                 .replace(".hg.hg/", ".hg/"))
 
     def read(self, node):
         t = self.revision(node)
         if not t.startswith('\1\n'):
             return t
         s = t.index('\1\n', 2)
         return t[s+2:]
 
     def _readmeta(self, node):
         t = self.revision(node)
         if not t.startswith('\1\n'):
             return {}
         s = t.index('\1\n', 2)
         mt = t[2:s]
         m = {}
         for l in mt.splitlines():
             k, v = l.split(": ", 1)
             m[k] = v
         return m
 
     def add(self, text, meta, transaction, link, p1=None, p2=None):
         if meta or text.startswith('\1\n'):
             mt = ""
             if meta:
                 mt = [ "%s: %s\n" % (k, v) for k,v in meta.items() ]
             text = "\1\n%s\1\n%s" % ("".join(mt), text)
         return self.addrevision(text, transaction, link, p1, p2)
 
     def renamed(self, node):
         if self.parents(node)[0] != nullid:
             return False
         m = self._readmeta(node)
         if m and m.has_key("copy"):
             return (m["copy"], bin(m["copyrev"]))
         return False
 
     def size(self, rev):
         """return the size of a given revision"""
 
         # for revisions with renames, we have to go the slow way
         node = self.node(rev)
         if self.renamed(node):
             return len(self.read(node))
 
         return revlog.size(self, rev)
 
     def cmp(self, node, text):
         """compare text with a given file revision"""
 
         # for renames, we have to go the slow way
         if self.renamed(node):
             t2 = self.read(node)
             return t2 != text
 
         return revlog.cmp(self, node, text)

mercurial/hgweb/hgweb_mod.py

@@ -1,1173 +1,1173
 # hgweb/hgweb_mod.py - Web interface for a repository.
 #
 # Copyright 21 May 2005 - (c) 2005 Jake Edge <[e-mail]>
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 import os, mimetypes, re, zlib, mimetools, cStringIO, sys
 import tempfile, urllib, bz2
 from mercurial.node import *
 from mercurial.i18n import gettext as _
 from mercurial import mdiff, ui, hg, util, archival, streamclone, patch
 from mercurial import revlog, templater
 from common import get_mtime, staticfile, style_map
 
 def _up(p):
     if p[0] != "/":
         p = "/" + p
     if p[-1] == "/":
         p = p[:-1]
     up = os.path.dirname(p)
     if up == "/":
         return "/"
     return up + "/"
 
 def revnavgen(pos, pagelen, limit, nodefunc):
     def seq(factor, limit=None):
         if limit:
             yield limit
             if limit >= 20 and limit <= 40:
                 yield 50
         else:
             yield 1 * factor
             yield 3 * factor
         for f in seq(factor * 10):
             yield f
 
     def nav(**map):
         l = []
         last = 0
         for f in seq(1, pagelen):
             if f < pagelen or f <= last:
                 continue
             if f > limit:
                 break
             last = f
             if pos + f < limit:
                 l.append(("+%d" % f, hex(nodefunc(pos + f).node())))
             if pos - f >= 0:
                 l.insert(0, ("-%d" % f, hex(nodefunc(pos - f).node())))
 
         try:
             yield {"label": "(0)", "node": hex(nodefunc('0').node())}
 
             for label, node in l:
                 yield {"label": label, "node": node}
 
             yield {"label": "tip", "node": "tip"}
         except hg.RepoError:
             pass
 
     return nav
 
 class hgweb(object):
     def __init__(self, repo, name=None):
         if type(repo) == type(""):
             self.repo = hg.repository(ui.ui(report_untrusted=False), repo)
         else:
             self.repo = repo
 
         self.mtime = -1
         self.reponame = name
         self.archives = 'zip', 'gz', 'bz2'
         self.stripecount = 1
         # a repo owner may set web.templates in .hg/hgrc to get any file
         # readable by the user running the CGI script
         self.templatepath = self.config("web", "templates",
                                         templater.templatepath(),
                                         untrusted=False)
 
     # The CGI scripts are often run by a user different from the repo owner.
     # Trust the settings from the .hg/hgrc files by default.
     def config(self, section, name, default=None, untrusted=True):
         return self.repo.ui.config(section, name, default,
                                    untrusted=untrusted)
 
     def configbool(self, section, name, default=False, untrusted=True):
         return self.repo.ui.configbool(section, name, default,
                                        untrusted=untrusted)
 
     def configlist(self, section, name, default=None, untrusted=True):
         return self.repo.ui.configlist(section, name, default,
                                        untrusted=untrusted)
 
     def refresh(self):
         mtime = get_mtime(self.repo.root)
         if mtime != self.mtime:
             self.mtime = mtime
             self.repo = hg.repository(self.repo.ui, self.repo.root)
             self.maxchanges = int(self.config("web", "maxchanges", 10))
             self.stripecount = int(self.config("web", "stripes", 1))
             self.maxshortchanges = int(self.config("web", "maxshortchanges", 60))
             self.maxfiles = int(self.config("web", "maxfiles", 10))
             self.allowpull = self.configbool("web", "allowpull", True)
 
     def archivelist(self, nodeid):
         allowed = self.configlist("web", "allow_archive")
         for i, spec in self.archive_specs.iteritems():
             if i in allowed or self.configbool("web", "allow" + i):
                 yield {"type" : i, "extension" : spec[2], "node" : nodeid}
 
     def listfilediffs(self, files, changeset):
         for f in files[:self.maxfiles]:
             yield self.t("filedifflink", node=hex(changeset), file=f)
         if len(files) > self.maxfiles:
             yield self.t("fileellipses")
 
     def siblings(self, siblings=[], hiderev=None, **args):
         siblings = [s for s in siblings if s.node() != nullid]
         if len(siblings) == 1 and siblings[0].rev() == hiderev:
             return
         for s in siblings:
             d = {'node': hex(s.node()), 'rev': s.rev()}
             if hasattr(s, 'path'):
                 d['file'] = s.path()
             d.update(args)
             yield d
 
     def renamelink(self, fl, node):
         r = fl.renamed(node)
         if r:
             return [dict(file=r[0], node=hex(r[1]))]
         return []
 
     def showtag(self, t1, node=nullid, **args):
         for t in self.repo.nodetags(node):
             yield self.t(t1, tag=t, **args)
 
     def diff(self, node1, node2, files):
         def filterfiles(filters, files):
             l = [x for x in files if x in filters]
 
             for t in filters:
                 if t and t[-1] != os.sep:
                     t += os.sep
                 l += [x for x in files if x.startswith(t)]
             return l
 
         parity = [0]
         def diffblock(diff, f, fn):
             yield self.t("diffblock",
                          lines=prettyprintlines(diff),
                          parity=parity[0],
                          file=f,
                          filenode=hex(fn or nullid))
             parity[0] = 1 - parity[0]
 
         def prettyprintlines(diff):
             for l in diff.splitlines(1):
                 if l.startswith('+'):
                     yield self.t("difflineplus", line=l)
                 elif l.startswith('-'):
                     yield self.t("difflineminus", line=l)
                 elif l.startswith('@'):
                     yield self.t("difflineat", line=l)
                 else:
                     yield self.t("diffline", line=l)
 
         r = self.repo
         c1 = r.changectx(node1)
         c2 = r.changectx(node2)
         date1 = util.datestr(c1.date())
         date2 = util.datestr(c2.date())
 
         modified, added, removed, deleted, unknown = r.status(node1, node2)[:5]
         if files:
             modified, added, removed = map(lambda x: filterfiles(files, x),
                                            (modified, added, removed))
 
         diffopts = patch.diffopts(self.repo.ui, untrusted=True)
         for f in modified:
             to = c1.filectx(f).data()
             tn = c2.filectx(f).data()
             yield diffblock(mdiff.unidiff(to, date1, tn, date2, f,
                                           opts=diffopts), f, tn)
         for f in added:
             to = None
             tn = c2.filectx(f).data()
             yield diffblock(mdiff.unidiff(to, date1, tn, date2, f,
                                           opts=diffopts), f, tn)
         for f in removed:
             to = c1.filectx(f).data()
             tn = None
             yield diffblock(mdiff.unidiff(to, date1, tn, date2, f,
                                           opts=diffopts), f, tn)
 
     def changelog(self, ctx, shortlog=False):
         def changelist(**map):
             parity = (start - end) & 1
             cl = self.repo.changelog
             l = [] # build a list in forward order for efficiency
             for i in xrange(start, end):
                 ctx = self.repo.changectx(i)
                 n = ctx.node()
 
                 l.insert(0, {"parity": parity,
                              "author": ctx.user(),
                              "parent": self.siblings(ctx.parents(), i - 1),
                              "child": self.siblings(ctx.children(), i + 1),
                              "changelogtag": self.showtag("changelogtag",n),
                              "desc": ctx.description(),
                              "date": ctx.date(),
                              "files": self.listfilediffs(ctx.files(), n),
                              "rev": i,
                              "node": hex(n)})
                 parity = 1 - parity
 
             for e in l:
                 yield e
 
         maxchanges = shortlog and self.maxshortchanges or self.maxchanges
         cl = self.repo.changelog
         count = cl.count()
         pos = ctx.rev()
         start = max(0, pos - maxchanges + 1)
         end = min(count, start + maxchanges)
         pos = end - 1
 
         changenav = revnavgen(pos, maxchanges, count, self.repo.changectx)
 
         yield self.t(shortlog and 'shortlog' or 'changelog',
                      changenav=changenav,
                      node=hex(cl.tip()),
                      rev=pos, changesets=count, entries=changelist,
                      archives=self.archivelist("tip"))
 
     def search(self, query):
 
         def changelist(**map):
             cl = self.repo.changelog
             count = 0
             qw = query.lower().split()
 
             def revgen():
                 for i in xrange(cl.count() - 1, 0, -100):
                     l = []
                     for j in xrange(max(0, i - 100), i):
                         ctx = self.repo.changectx(j)
                         l.append(ctx)
                     l.reverse()
                     for e in l:
                         yield e
 
             for ctx in revgen():
                 miss = 0
                 for q in qw:
                     if not (q in ctx.user().lower() or
                             q in ctx.description().lower() or
                             q in " ".join(ctx.files()[:20]).lower()):
                         miss = 1
                         break
                 if miss:
                     continue
 
                 count += 1
                 n = ctx.node()
 
                 yield self.t('searchentry',
                              parity=self.stripes(count),
                              author=ctx.user(),
                              parent=self.siblings(ctx.parents()),
                              child=self.siblings(ctx.children()),
                              changelogtag=self.showtag("changelogtag",n),
                              desc=ctx.description(),
                              date=ctx.date(),
                              files=self.listfilediffs(ctx.files(), n),
                              rev=ctx.rev(),
                              node=hex(n))
 
                 if count >= self.maxchanges:
                     break
 
         cl = self.repo.changelog
 
         yield self.t('search',
                      query=query,
                      node=hex(cl.tip()),
                      entries=changelist)
 
     def changeset(self, ctx):
         n = ctx.node()
         parents = ctx.parents()
         p1 = parents[0].node()
 
         files = []
         parity = 0
         for f in ctx.files():
             files.append(self.t("filenodelink",
                                 node=hex(n), file=f,
                                 parity=parity))
             parity = 1 - parity
 
         def diff(**map):
             yield self.diff(p1, n, None)
 
         yield self.t('changeset',
                      diff=diff,
                      rev=ctx.rev(),
                      node=hex(n),
                      parent=self.siblings(parents),
                      child=self.siblings(ctx.children()),
                      changesettag=self.showtag("changesettag",n),
                      author=ctx.user(),
                      desc=ctx.description(),
                      date=ctx.date(),
                      files=files,
                      archives=self.archivelist(hex(n)))
 
     def filelog(self, fctx):
         f = fctx.path()
         fl = fctx.filelog()
         count = fl.count()
         pagelen = self.maxshortchanges
         pos = fctx.filerev()
         start = max(0, pos - pagelen + 1)
         end = min(count, start + pagelen)
         pos = end - 1
 
         def entries(**map):
             l = []
             parity = (count - 1) & 1
 
             for i in xrange(start, end):
                 ctx = fctx.filectx(i)
                 n = fl.node(i)
 
                 l.insert(0, {"parity": parity,
                              "filerev": i,
                              "file": f,
                              "node": hex(ctx.node()),
                              "author": ctx.user(),
                              "date": ctx.date(),
                              "rename": self.renamelink(fl, n),
                              "parent": self.siblings(fctx.parents()),
                              "child": self.siblings(fctx.children()),
                              "desc": ctx.description()})
                 parity = 1 - parity
 
             for e in l:
                 yield e
 
         nodefunc = lambda x: fctx.filectx(fileid=x)
         nav = revnavgen(pos, pagelen, count, nodefunc)
         yield self.t("filelog", file=f, node=hex(fctx.node()), nav=nav,
                      entries=entries)
 
     def filerevision(self, fctx):
         f = fctx.path()
         text = fctx.data()
         fl = fctx.filelog()
         n = fctx.filenode()
 
         mt = mimetypes.guess_type(f)[0]
         rawtext = text
         if util.binary(text):
             mt = mt or 'application/octet-stream'
             text = "(binary:%s)" % mt
         mt = mt or 'text/plain'
 
         def lines():
             for l, t in enumerate(text.splitlines(1)):
                 yield {"line": t,
                        "linenumber": "% 6d" % (l + 1),
                        "parity": self.stripes(l)}
 
         yield self.t("filerevision",
                      file=f,
                      path=_up(f),
                      text=lines(),
                      raw=rawtext,
                      mimetype=mt,
                      rev=fctx.rev(),
                      node=hex(fctx.node()),
                      author=fctx.user(),
                      date=fctx.date(),
                      desc=fctx.description(),
                      parent=self.siblings(fctx.parents()),
                      child=self.siblings(fctx.children()),
                      rename=self.renamelink(fl, n),
                      permissions=fctx.manifest().execf(f))
 
     def fileannotate(self, fctx):
         f = fctx.path()
         n = fctx.filenode()
         fl = fctx.filelog()
 
         def annotate(**map):
             parity = 0
             last = None
             for f, l in fctx.annotate(follow=True):
                 fnode = f.filenode()
                 name = self.repo.ui.shortuser(f.user())
 
                 if last != fnode:
                     parity = 1 - parity
                     last = fnode
 
                 yield {"parity": parity,
                        "node": hex(f.node()),
                        "rev": f.rev(),
                        "author": name,
                        "file": f.path(),
                        "line": l}
 
         yield self.t("fileannotate",
                      file=f,
                      annotate=annotate,
                      path=_up(f),
                      rev=fctx.rev(),
                      node=hex(fctx.node()),
                      author=fctx.user(),
                      date=fctx.date(),
                      desc=fctx.description(),
                      rename=self.renamelink(fl, n),
                      parent=self.siblings(fctx.parents()),
                      child=self.siblings(fctx.children()),
                      permissions=fctx.manifest().execf(f))
 
     def manifest(self, ctx, path):
         mf = ctx.manifest()
         node = ctx.node()
 
         files = {}
 
         if path and path[-1] != "/":
             path += "/"
         l = len(path)
         abspath = "/" + path
 
         for f, n in mf.items():
             if f[:l] != path:
                 continue
             remain = f[l:]
             if "/" in remain:
                 short = remain[:remain.index("/") + 1] # bleah
                 files[short] = (f, None)
             else:
                 short = os.path.basename(remain)
                 files[short] = (f, n)
 
         def filelist(**map):
             parity = 0
             fl = files.keys()
             fl.sort()
             for f in fl:
                 full, fnode = files[f]
                 if not fnode:
                     continue
 
                 yield {"file": full,
                        "parity": self.stripes(parity),
                        "basename": f,
                        "size": ctx.filectx(full).size(),
                        "permissions": mf.execf(full)}
                 parity += 1
 
         def dirlist(**map):
             parity = 0
             fl = files.keys()
             fl.sort()
             for f in fl:
                 full, fnode = files[f]
                 if fnode:
                     continue
 
                 yield {"parity": self.stripes(parity),
                        "path": os.path.join(abspath, f),
                        "basename": f[:-1]}
                 parity += 1
 
         yield self.t("manifest",
                      rev=ctx.rev(),
                      node=hex(node),
                      path=abspath,
                      up=_up(abspath),
                      fentries=filelist,
                      dentries=dirlist,
                      archives=self.archivelist(hex(node)))
 
     def tags(self):
         i = self.repo.tagslist()
         i.reverse()
 
         def entries(notip=False, **map):
             parity = 0
             for k, n in i:
                 if notip and k == "tip":
                     continue
                 yield {"parity": self.stripes(parity),
                        "tag": k,
                        "date": self.repo.changectx(n).date(),
                        "node": hex(n)}
                 parity += 1
 
         yield self.t("tags",
                      node=hex(self.repo.changelog.tip()),
                      entries=lambda **x: entries(False, **x),
                      entriesnotip=lambda **x: entries(True, **x))
 
     def summary(self):
         i = self.repo.tagslist()
         i.reverse()
 
         def tagentries(**map):
             parity = 0
             count = 0
             for k, n in i:
                 if k == "tip": # skip tip
                     continue;
 
                 count += 1
                 if count > 10: # limit to 10 tags
                     break;
 
                 yield self.t("tagentry",
                              parity=self.stripes(parity),
                              tag=k,
                              node=hex(n),
                              date=self.repo.changectx(n).date())
                 parity += 1
 
         def heads(**map):
             parity = 0
             count = 0
 
             for node in self.repo.heads():
                 count += 1
                 if count > 10:
                     break;
 
                 ctx = self.repo.changectx(node)
 
                 yield {'parity': self.stripes(parity),
                        'branch': ctx.branch(),
                        'node': hex(node),
                        'date': ctx.date()}
                 parity += 1
 
         def changelist(**map):
             parity = 0
             l = [] # build a list in forward order for efficiency
             for i in xrange(start, end):
                 ctx = self.repo.changectx(i)
                 hn = hex(ctx.node())
 
                 l.insert(0, self.t(
                     'shortlogentry',
                     parity=parity,
                     author=ctx.user(),
                     desc=ctx.description(),
                     date=ctx.date(),
                     rev=i,
                     node=hn))
                 parity = 1 - parity
 
             yield l
 
         cl = self.repo.changelog
         count = cl.count()
         start = max(0, count - self.maxchanges)
         end = min(count, start + self.maxchanges)
 
         yield self.t("summary",
                  desc=self.config("web", "description", "unknown"),
                  owner=(self.config("ui", "username") or # preferred
                         self.config("web", "contact") or # deprecated
                         self.config("web", "author", "unknown")), # also
                  lastchange=cl.read(cl.tip())[2],
                  tags=tagentries,
                  heads=heads,
                  shortlog=changelist,
                  node=hex(cl.tip()),
                  archives=self.archivelist("tip"))
 
     def filediff(self, fctx):
         n = fctx.node()
         path = fctx.path()
         parents = fctx.parents()
         p1 = parents and parents[0].node() or nullid
 
         def diff(**map):
             yield self.diff(p1, n, [path])
 
         yield self.t("filediff",
                      file=path,
                      node=hex(n),
                      rev=fctx.rev(),
                      parent=self.siblings(parents),
                      child=self.siblings(fctx.children()),
                      diff=diff)
 
     archive_specs = {
         'bz2': ('application/x-tar', 'tbz2', '.tar.bz2', None),
         'gz': ('application/x-tar', 'tgz', '.tar.gz', None),
         'zip': ('application/zip', 'zip', '.zip', None),
         }
 
     def archive(self, req, id, type_):
         reponame = re.sub(r"\W+", "-", os.path.basename(self.reponame))
         cnode = self.repo.lookup(id)
         arch_version = id
         if cnode == id:
             arch_version = short(cnode)
         name = "%s-%s" % (reponame, arch_version)
         mimetype, artype, extension, encoding = self.archive_specs[type_]
         headers = [('Content-type', mimetype),
                    ('Content-disposition', 'attachment; filename=%s%s' %
                     (name, extension))]
         if encoding:
             headers.append(('Content-encoding', encoding))
         req.header(headers)
         archival.archive(self.repo, req.out, cnode, artype, prefix=name)
 
     # add tags to things
     # tags -> list of changesets corresponding to tags
     # find tag, changeset, file
 
     def cleanpath(self, path):
         path = path.lstrip('/')
         return util.canonpath(self.repo.root, '', path)
 
     def run(self):
         if not os.environ.get('GATEWAY_INTERFACE', '').startswith("CGI/1."):
             raise RuntimeError("This function is only intended to be called while running as a CGI script.")
         import mercurial.hgweb.wsgicgi as wsgicgi
         from request import wsgiapplication
         def make_web_app():
             return self
         wsgicgi.launch(wsgiapplication(make_web_app))
 
     def run_wsgi(self, req):
         def header(**map):
             header_file = cStringIO.StringIO(
                 ''.join(self.t("header", encoding=util._encoding, **map)))
             msg = mimetools.Message(header_file, 0)
             req.header(msg.items())
             yield header_file.read()
 
         def rawfileheader(**map):
             req.header([('Content-type', map['mimetype']),
                         ('Content-disposition', 'filename=%s' % map['file']),
                         ('Content-length', str(len(map['raw'])))])
             yield ''
 
         def footer(**map):
             yield self.t("footer", **map)
 
         def motd(**map):
             yield self.config("web", "motd", "")
 
         def expand_form(form):
             shortcuts = {
                 'cl': [('cmd', ['changelog']), ('rev', None)],
                 'sl': [('cmd', ['shortlog']), ('rev', None)],
                 'cs': [('cmd', ['changeset']), ('node', None)],
                 'f': [('cmd', ['file']), ('filenode', None)],
                 'fl': [('cmd', ['filelog']), ('filenode', None)],
                 'fd': [('cmd', ['filediff']), ('node', None)],
                 'fa': [('cmd', ['annotate']), ('filenode', None)],
                 'mf': [('cmd', ['manifest']), ('manifest', None)],
                 'ca': [('cmd', ['archive']), ('node', None)],
                 'tags': [('cmd', ['tags'])],
                 'tip': [('cmd', ['changeset']), ('node', ['tip'])],
                 'static': [('cmd', ['static']), ('file', None)]
             }
 
             for k in shortcuts.iterkeys():
                 if form.has_key(k):
                     for name, value in shortcuts[k]:
                         if value is None:
                             value = form[k]
                         form[name] = value
                     del form[k]
 
         def rewrite_request(req):
             '''translate new web interface to traditional format'''
 
             def spliturl(req):
                 def firstitem(query):
                     return query.split('&', 1)[0].split(';', 1)[0]
 
                 def normurl(url):
                     inner = '/'.join([x for x in url.split('/') if x])
                     tl = len(url) > 1 and url.endswith('/') and '/' or ''
 
                     return '%s%s%s' % (url.startswith('/') and '/' or '',
                                        inner, tl)
 
                 root = normurl(urllib.unquote(req.env.get('REQUEST_URI', '').split('?', 1)[0]))
                 pi = normurl(req.env.get('PATH_INFO', ''))
                 if pi:
                     # strip leading /
                     pi = pi[1:]
                     if pi:
                         root = root[:-len(pi)]
                     if req.env.has_key('REPO_NAME'):
                         rn = req.env['REPO_NAME'] + '/'
                         root += rn
                         query = pi[len(rn):]
                     else:
                         query = pi
                 else:
                     root += '?'
                     query = firstitem(req.env['QUERY_STRING'])
 
                 return (root, query)
 
             req.url, query = spliturl(req)
 
             if req.form.has_key('cmd'):
                 # old style
                 return
 
             args = query.split('/', 2)
             if not args or not args[0]:
                 return
 
             cmd = args.pop(0)
             style = cmd.rfind('-')
             if style != -1:
                 req.form['style'] = [cmd[:style]]
                 cmd = cmd[style+1:]
             # avoid accepting e.g. style parameter as command
             if hasattr(self, 'do_' + cmd):
                 req.form['cmd'] = [cmd]
 
             if args and args[0]:
                 node = args.pop(0)
                 req.form['node'] = [node]
             if args:
                 req.form['file'] = args
 
             if cmd == 'static':
                 req.form['file'] = req.form['node']
             elif cmd == 'archive':
                 fn = req.form['node'][0]
                 for type_, spec in self.archive_specs.iteritems():
                     ext = spec[2]
                     if fn.endswith(ext):
                         req.form['node'] = [fn[:-len(ext)]]
                         req.form['type'] = [type_]
 
         def sessionvars(**map):
             fields = []
             if req.form.has_key('style'):
                 style = req.form['style'][0]
                 if style != self.config('web', 'style', ''):
                     fields.append(('style', style))
 
             separator = req.url[-1] == '?' and ';' or '?'
             for name, value in fields:
                 yield dict(name=name, value=value, separator=separator)
                 separator = ';'
 
         self.refresh()
 
         expand_form(req.form)
         rewrite_request(req)
 
         style = self.config("web", "style", "")
         if req.form.has_key('style'):
             style = req.form['style'][0]
         mapfile = style_map(self.templatepath, style)
 
         port = req.env["SERVER_PORT"]
         port = port != "80" and (":" + port) or ""
         urlbase = 'http://%s%s' % (req.env['SERVER_NAME'], port)
         staticurl = self.config("web", "staticurl") or req.url + 'static/'
         if not staticurl.endswith('/'):
             staticurl += '/'
 
         if not self.reponame:
             self.reponame = (self.config("web", "name")
                              or req.env.get('REPO_NAME')
                              or req.url.strip('/') or self.repo.root)
 
         self.t = templater.templater(mapfile, templater.common_filters,
                                      defaults={"url": req.url,
                                                "staticurl": staticurl,
                                                "urlbase": urlbase,
                                                "repo": self.reponame,
                                                "header": header,
                                                "footer": footer,
                                                "motd": motd,
                                                "rawfileheader": rawfileheader,
                                                "sessionvars": sessionvars
                                                })
 
         try:
             if not req.form.has_key('cmd'):
                 req.form['cmd'] = [self.t.cache['default']]
 
             cmd = req.form['cmd'][0]
 
             method = getattr(self, 'do_' + cmd, None)
             if method:
                 try:
                     method(req)
                 except (hg.RepoError, revlog.RevlogError), inst:
                     req.write(self.t("error", error=str(inst)))
             else:
                 req.write(self.t("error", error='No such method: ' + cmd))
         finally:
             self.t = None
 
     def changectx(self, req):
         if req.form.has_key('node'):
             changeid = req.form['node'][0]
         elif req.form.has_key('manifest'):
             changeid = req.form['manifest'][0]
         else:
             changeid = self.repo.changelog.count() - 1
 
         try:
             ctx = self.repo.changectx(changeid)
         except hg.RepoError:
             man = self.repo.manifest
             mn = man.lookup(changeid)
             ctx = self.repo.changectx(man.linkrev(mn))
 
         return ctx
 
     def filectx(self, req):
         path = self.cleanpath(req.form['file'][0])
         if req.form.has_key('node'):
             changeid = req.form['node'][0]
         else:
             changeid = req.form['filenode'][0]
         try:
             ctx = self.repo.changectx(changeid)
             fctx = ctx.filectx(path)
         except hg.RepoError:
             fctx = self.repo.filectx(path, fileid=changeid)
 
         return fctx
 
     def stripes(self, parity):
         "make horizontal stripes for easier reading"
         if self.stripecount:
             return (1 + parity / self.stripecount) & 1
         else:
             return 0
 
     def do_log(self, req):
         if req.form.has_key('file') and req.form['file'][0]:
             self.do_filelog(req)
         else:
             self.do_changelog(req)
 
     def do_rev(self, req):
         self.do_changeset(req)
 
     def do_file(self, req):
         path = self.cleanpath(req.form.get('file', [''])[0])
         if path:
             try:
                 req.write(self.filerevision(self.filectx(req)))
                 return
             except revlog.LookupError:
                 pass
 
         req.write(self.manifest(self.changectx(req), path))
 
     def do_diff(self, req):
         self.do_filediff(req)
 
     def do_changelog(self, req, shortlog = False):
         if req.form.has_key('node'):
             ctx = self.changectx(req)
         else:
             if req.form.has_key('rev'):
                 hi = req.form['rev'][0]
             else:
                 hi = self.repo.changelog.count() - 1
             try:
                 ctx = self.repo.changectx(hi)
             except hg.RepoError:
                 req.write(self.search(hi)) # XXX redirect to 404 page?
                 return
 
         req.write(self.changelog(ctx, shortlog = shortlog))
 
     def do_shortlog(self, req):
         self.do_changelog(req, shortlog = True)
 
     def do_changeset(self, req):
         req.write(self.changeset(self.changectx(req)))
 
     def do_manifest(self, req):
         req.write(self.manifest(self.changectx(req),
                                 self.cleanpath(req.form['path'][0])))
 
     def do_tags(self, req):
         req.write(self.tags())
 
     def do_summary(self, req):
         req.write(self.summary())
 
     def do_filediff(self, req):
         req.write(self.filediff(self.filectx(req)))
 
     def do_annotate(self, req):
         req.write(self.fileannotate(self.filectx(req)))
 
     def do_filelog(self, req):
         req.write(self.filelog(self.filectx(req)))
 
     def do_lookup(self, req):
         try:
             r = hex(self.repo.lookup(req.form['key'][0]))
             success = 1
         except Exception,inst:
             r = str(inst)
             success = 0
         resp = "%s %s\n" % (success, r)
         req.httphdr("application/mercurial-0.1", length=len(resp))
         req.write(resp)
 
     def do_heads(self, req):
         resp = " ".join(map(hex, self.repo.heads())) + "\n"
         req.httphdr("application/mercurial-0.1", length=len(resp))
         req.write(resp)
 
     def do_branches(self, req):
         nodes = []
         if req.form.has_key('nodes'):
             nodes = map(bin, req.form['nodes'][0].split(" "))
         resp = cStringIO.StringIO()
         for b in self.repo.branches(nodes):
             resp.write(" ".join(map(hex, b)) + "\n")
         resp = resp.getvalue()
         req.httphdr("application/mercurial-0.1", length=len(resp))
         req.write(resp)
 
     def do_between(self, req):
         if req.form.has_key('pairs'):
             pairs = [map(bin, p.split("-"))
                      for p in req.form['pairs'][0].split(" ")]
         resp = cStringIO.StringIO()
         for b in self.repo.between(pairs):
             resp.write(" ".join(map(hex, b)) + "\n")
         resp = resp.getvalue()
         req.httphdr("application/mercurial-0.1", length=len(resp))
         req.write(resp)
 
     def do_changegroup(self, req):
         req.httphdr("application/mercurial-0.1")
         nodes = []
         if not self.allowpull:
             return
 
         if req.form.has_key('roots'):
             nodes = map(bin, req.form['roots'][0].split(" "))
 
         z = zlib.compressobj()
         f = self.repo.changegroup(nodes, 'serve')
         while 1:
             chunk = f.read(4096)
             if not chunk:
                 break
             req.write(z.compress(chunk))
 
         req.write(z.flush())
 
     def do_changegroupsubset(self, req):
         req.httphdr("application/mercurial-0.1")
         bases = []
         heads = []
         if not self.allowpull:
             return
 
         if req.form.has_key('bases'):
             bases = [bin(x) for x in req.form['bases'][0].split(' ')]
         if req.form.has_key('heads'):
             heads = [bin(x) for x in req.form['heads'][0].split(' ')]
 
         z = zlib.compressobj()
         f = self.repo.changegroupsubset(bases, heads, 'serve')
         while 1:
             chunk = f.read(4096)
             if not chunk:
                 break
             req.write(z.compress(chunk))
 
         req.write(z.flush())
 
     def do_archive(self, req):
         type_ = req.form['type'][0]
         allowed = self.configlist("web", "allow_archive")
         if (type_ in self.archives and (type_ in allowed or
             self.configbool("web", "allow" + type_, False))):
             self.archive(req, req.form['node'][0], type_)
             return
 
         req.write(self.t("error"))
 
     def do_static(self, req):
         fname = req.form['file'][0]
         # a repo owner may set web.static in .hg/hgrc to get any file
         # readable by the user running the CGI script
         static = self.config("web", "static",
                              os.path.join(self.templatepath, "static"),
                              untrusted=False)
         req.write(staticfile(static, fname, req)
                   or self.t("error", error="%r not found" % fname))
 
     def do_capabilities(self, req):
         caps = ['lookup', 'changegroupsubset']
         if self.configbool('server', 'uncompressed'):
-            caps.append('stream=%d' % self.repo.revlogversion)
+            caps.append('stream=%d' % self.repo.changelog.version)
         # XXX: make configurable and/or share code with do_unbundle:
         unbundleversions = ['HG10GZ', 'HG10BZ', 'HG10UN']
         if unbundleversions:
             caps.append('unbundle=%s' % ','.join(unbundleversions))
         resp = ' '.join(caps)
         req.httphdr("application/mercurial-0.1", length=len(resp))
         req.write(resp)
 
     def check_perm(self, req, op, default):
         '''check permission for operation based on user auth.
         return true if op allowed, else false.
         default is policy to use if no config given.'''
 
         user = req.env.get('REMOTE_USER')
 
         deny = self.configlist('web', 'deny_' + op)
         if deny and (not user or deny == ['*'] or user in deny):
             return False
 
         allow = self.configlist('web', 'allow_' + op)
         return (allow and (allow == ['*'] or user in allow)) or default
 
     def do_unbundle(self, req):
         def bail(response, headers={}):
             length = int(req.env['CONTENT_LENGTH'])
             for s in util.filechunkiter(req, limit=length):
                 # drain incoming bundle, else client will not see
                 # response when run outside cgi script
                 pass
             req.httphdr("application/mercurial-0.1", headers=headers)
             req.write('0\n')
             req.write(response)
 
         # require ssl by default, auth info cannot be sniffed and
         # replayed
         ssl_req = self.configbool('web', 'push_ssl', True)
         if ssl_req:
             if not req.env.get('HTTPS'):
                 bail(_('ssl required\n'))
                 return
             proto = 'https'
         else:
             proto = 'http'
 
         # do not allow push unless explicitly allowed
         if not self.check_perm(req, 'push', False):
             bail(_('push not authorized\n'),
                  headers={'status': '401 Unauthorized'})
             return
 
         their_heads = req.form['heads'][0].split(' ')
 
         def check_heads():
             heads = map(hex, self.repo.heads())
             return their_heads == [hex('force')] or their_heads == heads
 
         # fail early if possible
         if not check_heads():
             bail(_('unsynced changes\n'))
             return
 
         req.httphdr("application/mercurial-0.1")
 
         # do not lock repo until all changegroup data is
         # streamed. save to temporary file.
 
         fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')
         fp = os.fdopen(fd, 'wb+')
         try:
             length = int(req.env['CONTENT_LENGTH'])
             for s in util.filechunkiter(req, limit=length):
                 fp.write(s)
 
             try:
                 lock = self.repo.lock()
                 try:
                     if not check_heads():
                         req.write('0\n')
                         req.write(_('unsynced changes\n'))
                         return
 
                     fp.seek(0)
                     header = fp.read(6)
                     if not header.startswith("HG"):
                         # old client with uncompressed bundle
                         def generator(f):
                             yield header
                             for chunk in f:
                                 yield chunk
                     elif not header.startswith("HG10"):
                         req.write("0\n")
                         req.write(_("unknown bundle version\n"))
                         return
                     elif header == "HG10GZ":
                         def generator(f):
                             zd = zlib.decompressobj()
                             for chunk in f:
                                 yield zd.decompress(chunk)
                     elif header == "HG10BZ":
                         def generator(f):
                             zd = bz2.BZ2Decompressor()
                             zd.decompress("BZ")
                             for chunk in f:
                                 yield zd.decompress(chunk)
                     elif header == "HG10UN":
                         def generator(f):
                             for chunk in f:
                                 yield chunk
                     else:
                         req.write("0\n")
                         req.write(_("unknown bundle compression type\n"))
                         return
                     gen = generator(util.filechunkiter(fp, 4096))
 
                     # send addchangegroup output to client
 
                     old_stdout = sys.stdout
                     sys.stdout = cStringIO.StringIO()
 
                     try:
                         url = 'remote:%s:%s' % (proto,
                                                 req.env.get('REMOTE_HOST', ''))
                         try:
                             ret = self.repo.addchangegroup(
                                         util.chunkbuffer(gen), 'serve', url)
                         except util.Abort, inst:
                             sys.stdout.write("abort: %s\n" % inst)
                             ret = 0
                     finally:
                         val = sys.stdout.getvalue()
                         sys.stdout = old_stdout
                     req.write('%d\n' % ret)
                     req.write(val)
                 finally:
                     lock.release()
             except (OSError, IOError), inst:
                 req.write('0\n')
                 filename = getattr(inst, 'filename', '')
                 # Don't send our filesystem layout to the client
                 if filename.startswith(self.repo.root):
                     filename = filename[len(self.repo.root)+1:]
                 else:
                     filename = ''
                 error = getattr(inst, 'strerror', 'Unknown error')
                 req.write('%s: %s\n' % (error, filename))
         finally:
             fp.close()
             os.unlink(tempname)
 
     def do_stream_out(self, req):
         req.httphdr("application/mercurial-0.1")
         streamclone.stream_out(self.repo, req)

mercurial/localrepo.py

@@ -1,1964 +1,1941
 # localrepo.py - read/write repository class for mercurial
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from node import *
 from i18n import _
 import repo, appendfile, changegroup
 import changelog, dirstate, filelog, manifest, context
 import re, lock, transaction, tempfile, stat, mdiff, errno, ui
 import os, revlog, time, util
 
 class localrepository(repo.repository):
     capabilities = ('lookup', 'changegroupsubset')
     supported = ('revlogv1', 'store')
 
     def __del__(self):
         self.transhandle = None
     def __init__(self, parentui, path=None, create=0):
         repo.repository.__init__(self)
         if not path:
             p = os.getcwd()
             while not os.path.isdir(os.path.join(p, ".hg")):
                 oldp = p
                 p = os.path.dirname(p)
                 if p == oldp:
                     raise repo.RepoError(_("There is no Mercurial repository"
                                            " here (.hg not found)"))
             path = p
 
         self.root = os.path.realpath(path)
         self.path = os.path.join(self.root, ".hg")
         self.origroot = path
         self.opener = util.opener(self.path)
         self.wopener = util.opener(self.root)
 
         if not os.path.isdir(self.path):
             if create:
                 if not os.path.exists(path):
                     os.mkdir(path)
                 os.mkdir(self.path)
                 requirements = ["revlogv1"]
                 if parentui.configbool('format', 'usestore', True):
                     os.mkdir(os.path.join(self.path, "store"))
                     requirements.append("store")
                     # create an invalid changelog
                     self.opener("00changelog.i", "a").write(
                         '\0\0\0\2' # represents revlogv2
                         ' dummy changelog to prevent using the old repo layout'
                     )
                 reqfile = self.opener("requires", "w")
                 for r in requirements:
                     reqfile.write("%s\n" % r)
                 reqfile.close()
             else:
                 raise repo.RepoError(_("repository %s not found") % path)
         elif create:
             raise repo.RepoError(_("repository %s already exists") % path)
         else:
             # find requirements
             try:
                 requirements = self.opener("requires").read().splitlines()
             except IOError, inst:
                 if inst.errno != errno.ENOENT:
                     raise
                 requirements = []
         # check them
         for r in requirements:
             if r not in self.supported:
                 raise repo.RepoError(_("requirement '%s' not supported") % r)
 
         # setup store
         if "store" in requirements:
             self.encodefn = util.encodefilename
             self.decodefn = util.decodefilename
             self.spath = os.path.join(self.path, "store")
         else:
             self.encodefn = lambda x: x
             self.decodefn = lambda x: x
             self.spath = self.path
         self.sopener = util.encodedopener(util.opener(self.spath), self.encodefn)
 
         self.ui = ui.ui(parentui=parentui)
         try:
             self.ui.readconfig(self.join("hgrc"), self.root)
         except IOError:
             pass
 
-        v = self.ui.configrevlog()
-        self.revlogversion = int(v.get('format', revlog.REVLOG_DEFAULT_FORMAT))
-        self.revlogv1 = self.revlogversion != revlog.REVLOGV0
-        fl = v.get('flags', None)
-        flags = 0
-        if fl != None:
-            for x in fl.split():
-                flags |= revlog.flagstr(x)
-        elif self.revlogv1:
-            flags = revlog.REVLOG_DEFAULT_FLAGS
-
-        v = self.revlogversion | flags
-        self.manifest = manifest.manifest(self.sopener, v)
-        self.changelog = changelog.changelog(self.sopener, v)
+        self.changelog = changelog.changelog(self.sopener)
+        self.sopener.defversion = self.changelog.version
+        self.manifest = manifest.manifest(self.sopener)
 
         fallback = self.ui.config('ui', 'fallbackencoding')
         if fallback:
             util._fallbackencoding = fallback
 
-        # the changelog might not have the inline index flag
-        # on.  If the format of the changelog is the same as found in
-        # .hgrc, apply any flags found in the .hgrc as well.
-        # Otherwise, just version from the changelog
-        v = self.changelog.version
-        if v == self.revlogversion:
-            v |= flags
-        self.revlogversion = v
-
         self.tagscache = None
         self.branchcache = None
         self.nodetagscache = None
         self.filterpats = {}
         self.transhandle = None
 
         self._link = lambda x: False
         if util.checklink(self.root):
             r = self.root # avoid circular reference in lambda
             self._link = lambda x: util.is_link(os.path.join(r, x))
 
         self.dirstate = dirstate.dirstate(self.opener, self.ui, self.root)
 
     def url(self):
         return 'file:' + self.root
 
     def hook(self, name, throw=False, **args):
         def callhook(hname, funcname):
             '''call python hook. hook is callable object, looked up as
             name in python module. if callable returns "true", hook
             fails, else passes. if hook raises exception, treated as
             hook failure. exception propagates if throw is "true".
 
             reason for "true" meaning "hook failed" is so that
             unmodified commands (e.g. mercurial.commands.update) can
             be run as hooks without wrappers to convert return values.'''
 
             self.ui.note(_("calling hook %s: %s\n") % (hname, funcname))
             obj = funcname
             if not callable(obj):
                 d = funcname.rfind('.')
                 if d == -1:
                     raise util.Abort(_('%s hook is invalid ("%s" not in '
                                        'a module)') % (hname, funcname))
                 modname = funcname[:d]
                 try:
                     obj = __import__(modname)
                 except ImportError:
                     try:
                         # extensions are loaded with hgext_ prefix
                         obj = __import__("hgext_%s" % modname)
                     except ImportError:
                         raise util.Abort(_('%s hook is invalid '
                                            '(import of "%s" failed)') %
                                          (hname, modname))
                 try:
                     for p in funcname.split('.')[1:]:
                         obj = getattr(obj, p)
                 except AttributeError, err:
                     raise util.Abort(_('%s hook is invalid '
                                        '("%s" is not defined)') %
                                      (hname, funcname))
                 if not callable(obj):
                     raise util.Abort(_('%s hook is invalid '
                                        '("%s" is not callable)') %
                                      (hname, funcname))
             try:
                 r = obj(ui=self.ui, repo=self, hooktype=name, **args)
             except (KeyboardInterrupt, util.SignalInterrupt):
                 raise
             except Exception, exc:
                 if isinstance(exc, util.Abort):
                     self.ui.warn(_('error: %s hook failed: %s\n') %
                                  (hname, exc.args[0]))
                 else:
                     self.ui.warn(_('error: %s hook raised an exception: '
                                    '%s\n') % (hname, exc))
                 if throw:
                     raise
                 self.ui.print_exc()
                 return True
             if r:
                 if throw:
                     raise util.Abort(_('%s hook failed') % hname)
                 self.ui.warn(_('warning: %s hook failed\n') % hname)
             return r
 
         def runhook(name, cmd):
             self.ui.note(_("running hook %s: %s\n") % (name, cmd))
             env = dict([('HG_' + k.upper(), v) for k, v in args.iteritems()])
             r = util.system(cmd, environ=env, cwd=self.root)
             if r:
                 desc, r = util.explain_exit(r)
                 if throw:
                     raise util.Abort(_('%s hook %s') % (name, desc))
                 self.ui.warn(_('warning: %s hook %s\n') % (name, desc))
             return r
 
         r = False
         hooks = [(hname, cmd) for hname, cmd in self.ui.configitems("hooks")
                  if hname.split(".", 1)[0] == name and cmd]
         hooks.sort()
         for hname, cmd in hooks:
             if callable(cmd):
                 r = callhook(hname, cmd) or r
             elif cmd.startswith('python:'):
                 r = callhook(hname, cmd[7:].strip()) or r
             else:
                 r = runhook(hname, cmd) or r
         return r
 
     tag_disallowed = ':\r\n'
 
     def _tag(self, name, node, message, local, user, date, parent=None):
         use_dirstate = parent is None
 
         for c in self.tag_disallowed:
             if c in name:
                 raise util.Abort(_('%r cannot be used in a tag name') % c)
 
         self.hook('pretag', throw=True, node=hex(node), tag=name, local=local)
 
         if local:
             # local tags are stored in the current charset
             self.opener('localtags', 'a').write('%s %s\n' % (hex(node), name))
             self.hook('tag', node=hex(node), tag=name, local=local)
             return
 
         # committed tags are stored in UTF-8
         line = '%s %s\n' % (hex(node), util.fromlocal(name))
         if use_dirstate:
             self.wfile('.hgtags', 'ab').write(line)
         else:
             ntags = self.filectx('.hgtags', parent).data()
             self.wfile('.hgtags', 'ab').write(ntags + line)
         if use_dirstate and self.dirstate.state('.hgtags') == '?':
             self.add(['.hgtags'])
 
         tagnode = self.commit(['.hgtags'], message, user, date, p1=parent)
 
         self.hook('tag', node=hex(node), tag=name, local=local)
 
         return tagnode
 
     def tag(self, name, node, message, local, user, date):
         '''tag a revision with a symbolic name.
 
         if local is True, the tag is stored in a per-repository file.
         otherwise, it is stored in the .hgtags file, and a new
         changeset is committed with the change.
 
         keyword arguments:
 
         local: whether to store tag 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'''
 
         for x in self.status()[:5]:
             if '.hgtags' in x:
                 raise util.Abort(_('working copy of .hgtags is changed '
                                    '(please commit .hgtags manually)'))
 
 
         self._tag(name, node, message, local, user, date)
 
     def tags(self):
         '''return a mapping of tag to node'''
         if self.tagscache:
             return self.tagscache
 
         globaltags = {}
 
         def readtags(lines, fn):
             filetags = {}
             count = 0
 
             def warn(msg):
                 self.ui.warn(_("%s, line %s: %s\n") % (fn, count, msg))
 
             for l in lines:
                 count += 1
                 if not l:
                     continue
                 s = l.split(" ", 1)
                 if len(s) != 2:
                     warn(_("cannot parse entry"))
                     continue
                 node, key = s
                 key = util.tolocal(key.strip()) # stored in UTF-8
                 try:
                     bin_n = bin(node)
                 except TypeError:
                     warn(_("node '%s' is not well formed") % node)
                     continue
                 if bin_n not in self.changelog.nodemap:
                     warn(_("tag '%s' refers to unknown node") % key)
                     continue
 
                 h = {}
                 if key in filetags:
                     n, h = filetags[key]
                     h[n] = True
                 filetags[key] = (bin_n, h)
 
             for k,nh in filetags.items():
                 if k not in globaltags:
                     globaltags[k] = nh
                     continue
                 # we prefer the global tag if:
                 #  it supercedes us OR
                 #  mutual supercedes and it has a higher rank
                 # otherwise we win because we're tip-most
                 an, ah = nh
                 bn, bh = globaltags[k]
                 if bn != an and an in bh and \
                    (bn not in ah or len(bh) > len(ah)):
                     an = bn
                 ah.update(bh)
                 globaltags[k] = an, ah
 
         # read the tags file from each head, ending with the tip
         f = None
         for rev, node, fnode in self._hgtagsnodes():
             f = (f and f.filectx(fnode) or
                  self.filectx('.hgtags', fileid=fnode))
             readtags(f.data().splitlines(), f)
 
         try:
             data = util.fromlocal(self.opener("localtags").read())
             # localtags are stored in the local character set
             # while the internal tag table is stored in UTF-8
             readtags(data.splitlines(), "localtags")
         except IOError:
             pass
 
         self.tagscache = {}
         for k,nh in globaltags.items():
             n = nh[0]
             if n != nullid:
                 self.tagscache[k] = n
         self.tagscache['tip'] = self.changelog.tip()
 
         return self.tagscache
 
     def _hgtagsnodes(self):
         heads = self.heads()
         heads.reverse()
         last = {}
         ret = []
         for node in heads:
             c = self.changectx(node)
             rev = c.rev()
             try:
                 fnode = c.filenode('.hgtags')
             except revlog.LookupError:
                 continue
             ret.append((rev, node, fnode))
             if fnode in last:
                 ret[last[fnode]] = None
             last[fnode] = len(ret) - 1
         return [item for item in ret if item]
 
     def tagslist(self):
         '''return a list of tags ordered by revision'''
         l = []
         for t, n in self.tags().items():
             try:
                 r = self.changelog.rev(n)
             except:
                 r = -2 # sort to the beginning of the list if unknown
             l.append((r, t, n))
         l.sort()
         return [(t, n) for r, t, n in l]
 
     def nodetags(self, node):
         '''return the tags associated with a node'''
         if not self.nodetagscache:
             self.nodetagscache = {}
             for t, n in self.tags().items():
                 self.nodetagscache.setdefault(n, []).append(t)
         return self.nodetagscache.get(node, [])
 
     def _branchtags(self):
         partial, last, lrev = self._readbranchcache()
 
         tiprev = self.changelog.count() - 1
         if lrev != tiprev:
             self._updatebranchcache(partial, lrev+1, tiprev+1)
             self._writebranchcache(partial, self.changelog.tip(), tiprev)
 
         return partial
 
     def branchtags(self):
         if self.branchcache is not None:
             return self.branchcache
 
         self.branchcache = {} # avoid recursion in changectx
         partial = self._branchtags()
 
         # the branch cache is stored on disk as UTF-8, but in the local
         # charset internally
         for k, v in partial.items():
             self.branchcache[util.tolocal(k)] = v
         return self.branchcache
 
     def _readbranchcache(self):
         partial = {}
         try:
             f = self.opener("branch.cache")
             lines = f.read().split('\n')
             f.close()
             last, lrev = lines.pop(0).split(" ", 1)
             last, lrev = bin(last), int(lrev)
             if not (lrev < self.changelog.count() and
                     self.changelog.node(lrev) == last): # sanity check
                 # invalidate the cache
                 raise ValueError('Invalid branch cache: unknown tip')
             for l in lines:
                 if not l: continue
                 node, label = l.split(" ", 1)
                 partial[label.strip()] = bin(node)
         except (KeyboardInterrupt, util.SignalInterrupt):
             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("branch.cache", "w")
             f.write("%s %s\n" % (hex(tip), tiprev))
             for label, node in branches.iteritems():
                 f.write("%s %s\n" % (hex(node), label))
         except IOError:
             pass
 
     def _updatebranchcache(self, partial, start, end):
         for r in xrange(start, end):
             c = self.changectx(r)
             b = c.branch()
             partial[b] = c.node()
 
     def lookup(self, key):
         if key == '.':
             key = self.dirstate.parents()[0]
             if key == nullid:
                 raise repo.RepoError(_("no revision checked out"))
         elif key == 'null':
             return nullid
         n = self.changelog._match(key)
         if n:
             return n
         if key in self.tags():
             return self.tags()[key]
         if key in self.branchtags():
             return self.branchtags()[key]
         n = self.changelog._partialmatch(key)
         if n:
             return n
         raise repo.RepoError(_("unknown revision '%s'") % key)
 
     def dev(self):
         return os.lstat(self.path).st_dev
 
     def local(self):
         return True
 
     def join(self, f):
         return os.path.join(self.path, f)
 
     def sjoin(self, f):
         f = self.encodefn(f)
         return os.path.join(self.spath, 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, self.revlogversion)
+        return filelog.filelog(self.sopener, f)
 
     def changectx(self, changeid=None):
         return context.changectx(self, changeid)
 
     def workingctx(self):
         return context.workingctx(self)
 
     def parents(self, changeid=None):
         '''
         get list of changectxs for parents of changeid or working directory
         '''
         if changeid is None:
             pl = self.dirstate.parents()
         else:
             n = self.changelog.lookup(changeid)
             pl = self.changelog.parents(n)
         if pl[1] == nullid:
             return [self.changectx(pl[0])]
         return [self.changectx(pl[0]), self.changectx(pl[1])]
 
     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 wfile(self, f, mode='r'):
         return self.wopener(f, mode)
 
     def _filter(self, filter, filename, data):
         if filter not in self.filterpats:
             l = []
             for pat, cmd in self.ui.configitems(filter):
                 mf = util.matcher(self.root, "", [pat], [], [])[1]
                 l.append((mf, cmd))
             self.filterpats[filter] = l
 
         for mf, cmd in self.filterpats[filter]:
             if mf(filename):
                 self.ui.debug(_("filtering %s through %s\n") % (filename, cmd))
                 data = util.filter(data, cmd)
                 break
 
         return data
 
     def wread(self, filename):
         if self._link(filename):
             data = os.readlink(self.wjoin(filename))
         else:
             data = self.wopener(filename, 'r').read()
         return self._filter("encode", filename, data)
 
     def wwrite(self, filename, data, flags):
         data = self._filter("decode", filename, data)
         if "l" in flags:
             f = self.wjoin(filename)
             try:
                 os.unlink(f)
             except OSError:
                 pass
             d = os.path.dirname(f)
             if not os.path.exists(d):
                 os.makedirs(d)
             os.symlink(data, f)
         else:
             try:
                 if self._link(filename):
                     os.unlink(self.wjoin(filename))
             except OSError:
                 pass
             self.wopener(filename, 'w').write(data)
             util.set_exec(self.wjoin(filename), "x" in flags)
 
     def wwritedata(self, filename, data):
         return self._filter("decode", filename, data)
 
     def transaction(self):
         tr = self.transhandle
         if tr != None and tr.running():
             return tr.nest()
 
         # save dirstate for rollback
         try:
             ds = self.opener("dirstate").read()
         except IOError:
             ds = ""
         self.opener("journal.dirstate", "w").write(ds)
 
         renames = [(self.sjoin("journal"), self.sjoin("undo")),
                    (self.join("journal.dirstate"), self.join("undo.dirstate"))]
         tr = transaction.transaction(self.ui.warn, self.sopener,
                                        self.sjoin("journal"),
                                        aftertrans(renames))
         self.transhandle = tr
         return tr
 
     def recover(self):
         l = self.lock()
         if os.path.exists(self.sjoin("journal")):
             self.ui.status(_("rolling back interrupted transaction\n"))
             transaction.rollback(self.sopener, self.sjoin("journal"))
             self.reload()
             return True
         else:
             self.ui.warn(_("no interrupted transaction available\n"))
             return False
 
     def rollback(self, wlock=None):
         if not wlock:
             wlock = self.wlock()
         l = self.lock()
         if os.path.exists(self.sjoin("undo")):
             self.ui.status(_("rolling back last transaction\n"))
             transaction.rollback(self.sopener, self.sjoin("undo"))
             util.rename(self.join("undo.dirstate"), self.join("dirstate"))
             self.reload()
             self.wreload()
         else:
             self.ui.warn(_("no rollback information available\n"))
 
     def wreload(self):
         self.dirstate.read()
 
     def reload(self):
         self.changelog.load()
         self.manifest.load()
         self.tagscache = None
         self.nodetagscache = None
 
     def do_lock(self, lockname, wait, releasefn=None, acquirefn=None,
                 desc=None):
         try:
             l = lock.lock(lockname, 0, releasefn, desc=desc)
         except lock.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 lock(self, wait=1):
         return self.do_lock(self.sjoin("lock"), wait, acquirefn=self.reload,
                             desc=_('repository %s') % self.origroot)
 
     def wlock(self, wait=1):
         return self.do_lock(self.join("wlock"), wait, self.dirstate.write,
                             self.wreload,
                             desc=_('working directory of %s') % self.origroot)
 
     def filecommit(self, fn, manifest1, manifest2, linkrev, transaction, changelist):
         """
         commit an individual file as part of a larger transaction
         """
 
         t = self.wread(fn)
         fl = self.file(fn)
         fp1 = manifest1.get(fn, nullid)
         fp2 = manifest2.get(fn, nullid)
 
         meta = {}
         cp = self.dirstate.copied(fn)
         if cp:
             # 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
             #
             meta["copy"] = cp
             if not manifest2: # not a branch merge
                 meta["copyrev"] = hex(manifest1.get(cp, nullid))
                 fp2 = nullid
             elif fp2 != nullid: # copied on remote side
                 meta["copyrev"] = hex(manifest1.get(cp, nullid))
             elif fp1 != nullid: # copied on local side, reversed
                 meta["copyrev"] = hex(manifest2.get(cp))
                 fp2 = fp1
             else: # directory rename
                 meta["copyrev"] = hex(manifest1.get(cp, nullid))
             self.ui.debug(_(" %s: copy %s:%s\n") %
                           (fn, cp, meta["copyrev"]))
             fp1 = nullid
         elif fp2 != nullid:
             # is one parent an ancestor of the other?
             fpa = fl.ancestor(fp1, fp2)
             if fpa == fp1:
                 fp1, fp2 = fp2, nullid
             elif fpa == fp2:
                 fp2 = nullid
 
             # is the file unmodified from the parent? report existing entry
             if fp2 == nullid and not fl.cmp(fp1, t):
                 return fp1
 
         changelist.append(fn)
         return fl.add(t, meta, transaction, linkrev, fp1, fp2)
 
     def rawcommit(self, files, text, user, date, p1=None, p2=None, wlock=None, extra={}):
         if p1 is None:
             p1, p2 = self.dirstate.parents()
         return self.commit(files=files, text=text, user=user, date=date,
                            p1=p1, p2=p2, wlock=wlock, extra=extra)
 
     def commit(self, files=None, text="", user=None, date=None,
                match=util.always, force=False, lock=None, wlock=None,
                force_editor=False, p1=None, p2=None, extra={}):
 
         commit = []
         remove = []
         changed = []
         use_dirstate = (p1 is None) # not rawcommit
         extra = extra.copy()
 
         if use_dirstate:
             if files:
                 for f in files:
                     s = self.dirstate.state(f)
                     if s in 'nmai':
                         commit.append(f)
                     elif s == 'r':
                         remove.append(f)
                     else:
                         self.ui.warn(_("%s not tracked!\n") % f)
             else:
                 changes = self.status(match=match)[:5]
                 modified, added, removed, deleted, unknown = changes
                 commit = modified + added
                 remove = removed
         else:
             commit = files
 
         if use_dirstate:
             p1, p2 = self.dirstate.parents()
             update_dirstate = True
         else:
             p1, p2 = p1, p2 or nullid
             update_dirstate = (self.dirstate.parents()[0] == p1)
 
         c1 = self.changelog.read(p1)
         c2 = self.changelog.read(p2)
         m1 = self.manifest.read(c1[0]).copy()
         m2 = self.manifest.read(c2[0])
 
         if use_dirstate:
             branchname = self.workingctx().branch()
             try:
                 branchname = branchname.decode('UTF-8').encode('UTF-8')
             except UnicodeDecodeError:
                 raise util.Abort(_('branch name not in UTF-8!'))
         else:
             branchname = ""
 
         if use_dirstate:
             oldname = c1[5].get("branch") # stored in UTF-8
             if not commit and not remove and not force and p2 == nullid and \
                    branchname == oldname:
                 self.ui.status(_("nothing changed\n"))
                 return None
 
         xp1 = hex(p1)
         if p2 == nullid: xp2 = ''
         else: xp2 = hex(p2)
 
         self.hook("precommit", throw=True, parent1=xp1, parent2=xp2)
 
         if not wlock:
             wlock = self.wlock()
         if not lock:
             lock = self.lock()
         tr = self.transaction()
 
         # check in files
         new = {}
         linkrev = self.changelog.count()
         commit.sort()
         is_exec = util.execfunc(self.root, m1.execf)
         is_link = util.linkfunc(self.root, m1.linkf)
         for f in commit:
             self.ui.note(f + "\n")
             try:
                 new[f] = self.filecommit(f, m1, m2, linkrev, tr, changed)
                 m1.set(f, is_exec(f), is_link(f))
             except (OSError, IOError):
                 if use_dirstate:
                     self.ui.warn(_("trouble committing %s!\n") % f)
                     raise
                 else:
                     remove.append(f)
 
         # update manifest
         m1.update(new)
         remove.sort()
         removed = []
 
         for f in remove:
             if f in m1:
                 del m1[f]
                 removed.append(f)
         mn = self.manifest.add(m1, tr, linkrev, c1[0], c2[0], (new, removed))
 
         # add changeset
         new = new.keys()
         new.sort()
 
         user = user or self.ui.username()
         if not text or force_editor:
             edittext = []
             if text:
                 edittext.append(text)
             edittext.append("")
             edittext.append("HG: user: %s" % user)
             if p2 != nullid:
                 edittext.append("HG: branch merge")
             if branchname:
                 edittext.append("HG: branch %s" % util.tolocal(branchname))
             edittext.extend(["HG: changed %s" % f for f in changed])
             edittext.extend(["HG: removed %s" % f for f in removed])
             if not changed and not remove:
                 edittext.append("HG: no files changed")
             edittext.append("")
             # run editor in the repository root
             olddir = os.getcwd()
             os.chdir(self.root)
             text = self.ui.edit("\n".join(edittext), user)
             os.chdir(olddir)
 
         lines = [line.rstrip() for line in text.rstrip().splitlines()]
         while lines and not lines[0]:
             del lines[0]
         if not lines:
             return None
         text = '\n'.join(lines)
         if branchname:
             extra["branch"] = branchname
         n = self.changelog.add(mn, changed + removed, text, tr, p1, p2,
                                user, date, extra)
         self.hook('pretxncommit', throw=True, node=hex(n), parent1=xp1,
                   parent2=xp2)
         tr.close()
 
         if self.branchcache and "branch" in extra:
             self.branchcache[util.tolocal(extra["branch"])] = n
 
         if use_dirstate or update_dirstate:
             self.dirstate.setparents(n)
             if use_dirstate:
                 self.dirstate.update(new, "n")
                 self.dirstate.forget(removed)
 
         self.hook("commit", node=hex(n), parent1=xp1, parent2=xp2)
         return n
 
     def walk(self, node=None, files=[], match=util.always, badmatch=None):
         '''
         walk recursively through the directory tree or a given
         changeset, finding all files matched by the match
         function
 
         results are yielded in a tuple (src, filename), where src
         is one of:
         'f' the file was found in the directory tree
         'm' the file was only in the dirstate and not in the tree
         'b' file was not found and matched badmatch
         '''
 
         if node:
             fdict = dict.fromkeys(files)
             # for dirstate.walk, files=['.'] means "walk the whole tree".
             # follow that here, too
             fdict.pop('.', None)
             mdict = self.manifest.read(self.changelog.read(node)[0])
             mfiles = mdict.keys()
             mfiles.sort()
             for fn in mfiles:
                 for ffn in fdict:
                     # match if the file is the exact name or a directory
                     if ffn == fn or fn.startswith("%s/" % ffn):
                         del fdict[ffn]
                         break
                 if match(fn):
                     yield 'm', fn
             ffiles = fdict.keys()
             ffiles.sort()
             for fn in ffiles:
                 if badmatch and badmatch(fn):
                     if match(fn):
                         yield 'b', fn
                 else:
                     self.ui.warn(_('%s: No such file in rev %s\n') % (
                         util.pathto(self.root, self.getcwd(), fn), short(node)))
         else:
             for src, fn in self.dirstate.walk(files, match, badmatch=badmatch):
                 yield src, fn
 
     def status(self, node1=None, node2=None, files=[], match=util.always,
                 wlock=None, list_ignored=False, list_clean=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 fcmp(fn, getnode):
             t1 = self.wread(fn)
             return self.file(fn).cmp(getnode(fn), t1)
 
         def mfmatches(node):
             change = self.changelog.read(node)
             mf = self.manifest.read(change[0]).copy()
             for fn in mf.keys():
                 if not match(fn):
                     del mf[fn]
             return mf
 
         modified, added, removed, deleted, unknown = [], [], [], [], []
         ignored, clean = [], []
 
         compareworking = False
         if not node1 or (not node2 and node1 == self.dirstate.parents()[0]):
             compareworking = True
 
         if not compareworking:
             # read the manifest from node1 before the manifest from node2,
             # so that we'll hit the manifest cache if we're going through
             # all the revisions in parent->child order.
             mf1 = mfmatches(node1)
 
         # are we comparing the working directory?
         if not node2:
             if not wlock:
                 try:
                     wlock = self.wlock(wait=0)
                 except lock.LockException:
                     wlock = None
             (lookup, modified, added, removed, deleted, unknown,
              ignored, clean) = self.dirstate.status(files, match,
                                                     list_ignored, list_clean)
 
             # are we comparing working dir against its parent?
             if compareworking:
                 if lookup:
                     # do a full compare of any files that might have changed
                     mnode = self.changelog.read(self.dirstate.parents()[0])[0]
                     getnode = lambda fn: (self.manifest.find(mnode, fn)[0] or
                                           nullid)
                     for f in lookup:
                         if fcmp(f, getnode):
                             modified.append(f)
                         else:
                             clean.append(f)
                             if wlock is not None:
                                 self.dirstate.update([f], "n")
             else:
                 # we are comparing working dir against non-parent
                 # generate a pseudo-manifest for the working dir
                 # XXX: create it in dirstate.py ?
                 mf2 = mfmatches(self.dirstate.parents()[0])
                 is_exec = util.execfunc(self.root, mf2.execf)
                 is_link = util.linkfunc(self.root, mf2.linkf)
                 for f in lookup + modified + added:
                     mf2[f] = ""
                     mf2.set(f, is_exec(f), is_link(f))
                 for f in removed:
                     if f in mf2:
                         del mf2[f]
         else:
             # we are comparing two revisions
             mf2 = mfmatches(node2)
 
         if not compareworking:
             # flush lists from dirstate before comparing manifests
             modified, added, clean = [], [], []
 
             # make sure to sort the files so we talk to the disk in a
             # reasonable order
             mf2keys = mf2.keys()
             mf2keys.sort()
             getnode = lambda fn: mf1.get(fn, nullid)
             for fn in mf2keys:
                 if mf1.has_key(fn):
                     if mf1.flags(fn) != mf2.flags(fn) or \
                        (mf1[fn] != mf2[fn] and (mf2[fn] != "" or
                                                 fcmp(fn, getnode))):
                         modified.append(fn)
                     elif list_clean:
                         clean.append(fn)
                     del mf1[fn]
                 else:
                     added.append(fn)
 
             removed = mf1.keys()
 
         # sort and return results:
         for l in modified, added, removed, deleted, unknown, ignored, clean:
             l.sort()
         return (modified, added, removed, deleted, unknown, ignored, clean)
 
     def add(self, list, wlock=None):
         if not wlock:
             wlock = self.wlock()
         for f in list:
             p = self.wjoin(f)
             islink = os.path.islink(p)
             if not islink and not os.path.exists(p):
                 self.ui.warn(_("%s does not exist!\n") % f)
             elif not islink and not os.path.isfile(p):
                 self.ui.warn(_("%s not added: only files and symlinks "
                                "supported currently\n") % f)
             elif self.dirstate.state(f) in 'an':
                 self.ui.warn(_("%s already tracked!\n") % f)
             else:
                 self.dirstate.update([f], "a")
 
     def forget(self, list, wlock=None):
         if not wlock:
             wlock = self.wlock()
         for f in list:
             if self.dirstate.state(f) not in 'ai':
                 self.ui.warn(_("%s not added!\n") % f)
             else:
                 self.dirstate.forget([f])
 
     def remove(self, list, unlink=False, wlock=None):
         if unlink:
             for f in list:
                 try:
                     util.unlink(self.wjoin(f))
                 except OSError, inst:
                     if inst.errno != errno.ENOENT:
                         raise
         if not wlock:
             wlock = self.wlock()
         for f in list:
             p = self.wjoin(f)
             if os.path.exists(p):
                 self.ui.warn(_("%s still exists!\n") % f)
             elif self.dirstate.state(f) == 'a':
                 self.dirstate.forget([f])
             elif f not in self.dirstate:
                 self.ui.warn(_("%s not tracked!\n") % f)
             else:
                 self.dirstate.update([f], "r")
 
     def undelete(self, list, wlock=None):
         p = self.dirstate.parents()[0]
         mn = self.changelog.read(p)[0]
         m = self.manifest.read(mn)
         if not wlock:
             wlock = self.wlock()
         for f in list:
             if self.dirstate.state(f) not in  "r":
                 self.ui.warn("%s not removed!\n" % f)
             else:
                 t = self.file(f).read(m[f])
                 self.wwrite(f, t, m.flags(f))
                 self.dirstate.update([f], "n")
 
     def copy(self, source, dest, wlock=None):
         p = self.wjoin(dest)
         if not os.path.exists(p):
             self.ui.warn(_("%s does not exist!\n") % dest)
         elif not os.path.isfile(p):
             self.ui.warn(_("copy failed: %s is not a file\n") % dest)
         else:
             if not wlock:
                 wlock = self.wlock()
             if self.dirstate.state(dest) == '?':
                 self.dirstate.update([dest], "a")
             self.dirstate.copy(source, dest)
 
     def heads(self, start=None):
         heads = self.changelog.heads(start)
         # sort the output in rev descending order
         heads = [(-self.changelog.rev(h), h) for h in heads]
         heads.sort()
         return [n for (r, n) in heads]
 
     def branches(self, nodes):
         if not nodes:
             nodes = [self.changelog.tip()]
         b = []
         for n in nodes:
             t = n
             while 1:
                 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:
                 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 findincoming(self, remote, base=None, heads=None, force=False):
         """Return list of roots of the subsets of missing nodes from remote
 
         If base dict is specified, assume that these nodes and their parents
         exist on the remote side and that no child of a node of base exists
         in both remote and self.
         Furthermore base will be updated to include the nodes that exists
         in self and remote but no children exists in self and remote.
         If a list of heads is specified, return only nodes which are heads
         or ancestors of these heads.
 
         All the ancestors of base are in self and in remote.
         All the descendants of the list returned are missing in self.
         (and so we know that the rest of the nodes are missing in remote, see
         outgoing)
         """
         m = self.changelog.nodemap
         search = []
         fetch = {}
         seen = {}
         seenbranch = {}
         if base == None:
             base = {}
 
         if not heads:
             heads = remote.heads()
 
         if self.changelog.tip() == nullid:
             base[nullid] = 1
             if heads != [nullid]:
                 return [nullid]
             return []
 
         # assume we're closer to the tip than the root
         # and start by examining the heads
         self.ui.status(_("searching for changes\n"))
 
         unknown = []
         for h in heads:
             if h not in m:
                 unknown.append(h)
             else:
                 base[h] = 1
 
         if not unknown:
             return []
 
         req = dict.fromkeys(unknown)
         reqcnt = 0
 
         # search through remote branches
         # a 'branch' here is a linear segment of history, with four parts:
         # head, root, first parent, second parent
         # (a branch always has two parents (or none) by definition)
         unknown = remote.branches(unknown)
         while unknown:
             r = []
             while unknown:
                 n = unknown.pop(0)
                 if n[0] in seen:
                     continue
 
                 self.ui.debug(_("examining %s:%s\n")
                               % (short(n[0]), short(n[1])))
                 if n[0] == nullid: # found the end of the branch
                     pass
                 elif n in seenbranch:
                     self.ui.debug(_("branch already found\n"))
                     continue
                 elif n[1] and n[1] in m: # do we know the base?
                     self.ui.debug(_("found incomplete branch %s:%s\n")
                                   % (short(n[0]), short(n[1])))
                     search.append(n) # schedule branch range for scanning
                     seenbranch[n] = 1
                 else:
                     if n[1] not in seen and n[1] not in fetch:
                         if n[2] in m and n[3] in m:
                             self.ui.debug(_("found new changeset %s\n") %
                                           short(n[1]))
                             fetch[n[1]] = 1 # earliest unknown
                         for p in n[2:4]:
                             if p in m:
                                 base[p] = 1 # latest known
 
                     for p in n[2:4]:
                         if p not in req and p not in m:
                             r.append(p)
                             req[p] = 1
                 seen[n[0]] = 1
 
             if r:
                 reqcnt += 1
                 self.ui.debug(_("request %d: %s\n") %
                             (reqcnt, " ".join(map(short, r))))
                 for p in xrange(0, len(r), 10):
                     for b in remote.branches(r[p:p+10]):
                         self.ui.debug(_("received %s:%s\n") %
                                       (short(b[0]), short(b[1])))
                         unknown.append(b)
 
         # do binary search on the branches we found
         while search:
             n = search.pop(0)
             reqcnt += 1
             l = remote.between([(n[0], n[1])])[0]
             l.append(n[1])
             p = n[0]
             f = 1
             for i in l:
                 self.ui.debug(_("narrowing %d:%d %s\n") % (f, len(l), short(i)))
                 if i in m:
                     if f <= 2:
                         self.ui.debug(_("found new branch changeset %s\n") %
                                           short(p))
                         fetch[p] = 1
                         base[i] = 1
                     else:
                         self.ui.debug(_("narrowed branch search to %s:%s\n")
                                       % (short(p), short(i)))
                         search.append((p, i))
                     break
                 p, f = i, f * 2
 
         # sanity check our fetch list
         for f in fetch.keys():
             if f in m:
                 raise repo.RepoError(_("already have changeset ") + short(f[:4]))
 
         if base.keys() == [nullid]:
             if force:
                 self.ui.warn(_("warning: repository is unrelated\n"))
             else:
                 raise util.Abort(_("repository is unrelated"))
 
         self.ui.debug(_("found new changesets starting at ") +
                      " ".join([short(f) for f in fetch]) + "\n")
 
         self.ui.debug(_("%d total queries\n") % reqcnt)
 
         return fetch.keys()
 
     def findoutgoing(self, remote, base=None, heads=None, force=False):
         """Return list of nodes that are roots of subsets not in remote
 
         If base dict is specified, assume that these nodes and their parents
         exist on the remote side.
         If a list of heads is specified, return only nodes which are heads
         or ancestors of these heads, and return a second element which
         contains all remote heads which get new children.
         """
         if base == None:
             base = {}
             self.findincoming(remote, base, heads, force=force)
 
         self.ui.debug(_("common changesets up to ")
                       + " ".join(map(short, base.keys())) + "\n")
 
         remain = dict.fromkeys(self.changelog.nodemap)
 
         # prune everything remote has from the tree
         del remain[nullid]
         remove = base.keys()
         while remove:
             n = remove.pop(0)
             if n in remain:
                 del remain[n]
                 for p in self.changelog.parents(n):
                     remove.append(p)
 
         # find every node whose parents have been pruned
         subset = []
         # find every remote head that will get new children
         updated_heads = {}
         for n in remain:
             p1, p2 = self.changelog.parents(n)
             if p1 not in remain and p2 not in remain:
                 subset.append(n)
             if heads:
                 if p1 in heads:
                     updated_heads[p1] = True
                 if p2 in heads:
                     updated_heads[p2] = True
 
         # this is the set of all roots we have to push
         if heads:
             return subset, updated_heads.keys()
         else:
             return subset
 
     def pull(self, remote, heads=None, force=False, lock=None):
         mylock = False
         if not lock:
             lock = self.lock()
             mylock = True
 
         try:
             fetch = self.findincoming(remote, force=force)
             if fetch == [nullid]:
                 self.ui.status(_("requesting all changes\n"))
 
             if not fetch:
                 self.ui.status(_("no changes found\n"))
                 return 0
 
             if heads is None:
                 cg = remote.changegroup(fetch, 'pull')
             else:
                 if 'changegroupsubset' not in remote.capabilities:
                     raise util.Abort(_("Partial pull cannot be done because other repository doesn't support changegroupsubset."))
                 cg = remote.changegroupsubset(fetch, heads, 'pull')
             return self.addchangegroup(cg, 'pull', remote.url())
         finally:
             if mylock:
                 lock.release()
 
     def push(self, remote, force=False, revs=None):
         # 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 remote.capable('unbundle'):
             return self.push_unbundle(remote, force, revs)
         return self.push_addchangegroup(remote, force, revs)
 
     def prepush(self, remote, force, revs):
         base = {}
         remote_heads = remote.heads()
         inc = self.findincoming(remote, base, remote_heads, force=force)
 
         update, updated_heads = self.findoutgoing(remote, base, remote_heads)
         if revs is not None:
             msng_cl, bases, heads = self.changelog.nodesbetween(update, revs)
         else:
             bases, heads = update, self.changelog.heads()
 
         if not bases:
             self.ui.status(_("no changes found\n"))
             return None, 1
         elif not force:
             # check if we're creating new remote heads
             # to be a remote head after push, node must be either
             # - unknown locally
             # - a local outgoing head descended from update
             # - a remote head that's known locally and not
             #   ancestral to an outgoing head
 
             warn = 0
 
             if remote_heads == [nullid]:
                 warn = 0
             elif not revs and len(heads) > len(remote_heads):
                 warn = 1
             else:
                 newheads = list(heads)
                 for r in remote_heads:
                     if r in self.changelog.nodemap:
                         desc = self.changelog.heads(r, heads)
                         l = [h for h in heads if h in desc]
                         if not l:
                             newheads.append(r)
                     else:
                         newheads.append(r)
                 if len(newheads) > len(remote_heads):
                     warn = 1
 
             if warn:
                 self.ui.warn(_("abort: push creates new remote branches!\n"))
                 self.ui.status(_("(did you forget to merge?"
                                  " use push -f to force)\n"))
                 return None, 1
             elif inc:
                 self.ui.warn(_("note: unsynced remote changes!\n"))
 
 
         if revs is None:
             cg = self.changegroup(update, 'push')
         else:
             cg = self.changegroupsubset(update, revs, 'push')
         return cg, remote_heads
 
     def push_addchangegroup(self, remote, force, revs):
         lock = remote.lock()
 
         ret = self.prepush(remote, force, revs)
         if ret[0] is not None:
             cg, remote_heads = ret
             return remote.addchangegroup(cg, 'push', self.url())
         return ret[1]
 
     def push_unbundle(self, remote, force, revs):
         # 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.
 
         ret = self.prepush(remote, force, revs)
         if ret[0] is not None:
             cg, remote_heads = ret
             if force: remote_heads = ['force']
             return remote.unbundle(cg, remote_heads, 'push')
         return ret[1]
 
     def changegroupinfo(self, nodes):
         self.ui.note(_("%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):
         """This function generates a changegroup consisting of all the nodes
         that are descendents of any of the bases, and ancestors of any of
         the heads.
 
         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."""
 
         self.hook('preoutgoing', throw=True, source=source)
 
         # Set up some initial variables
         # Make it easy to refer to self.changelog
         cl = self.changelog
         # msng is short for missing - compute the list of changesets in this
         # changegroup.
         msng_cl_lst, bases, heads = cl.nodesbetween(bases, heads)
         self.changegroupinfo(msng_cl_lst)
         # Some bases may turn out to be superfluous, and some heads may be
         # too.  nodesbetween will return the minimal set of bases and heads
         # necessary to re-create the changegroup.
 
         # Known heads are the list of heads that it is assumed the recipient
         # of this changegroup will know about.
         knownheads = {}
         # We assume that all parents of bases are known heads.
         for n in bases:
             for p in cl.parents(n):
                 if p != nullid:
                     knownheads[p] = 1
         knownheads = knownheads.keys()
         if knownheads:
             # Now that we know what heads are known, we can compute which
             # changesets are known.  The recipient must know about all
             # changesets required to reach the known heads from the null
             # changeset.
             has_cl_set, junk, junk = cl.nodesbetween(None, knownheads)
             junk = None
             # Transform the list into an ersatz set.
             has_cl_set = dict.fromkeys(has_cl_set)
         else:
             # If there were no known heads, the recipient cannot be assumed to
             # know about any changesets.
             has_cl_set = {}
 
         # Make it easy to refer to self.manifest
         mnfst = self.manifest
         # We don't know which manifests are missing yet
         msng_mnfst_set = {}
         # Nor do we know which filenodes are missing.
         msng_filenode_set = {}
 
         junk = mnfst.index[mnfst.count() - 1] # Get around a bug in lazyindex
         junk = None
 
         # A changeset always belongs to itself, so the changenode lookup
         # function for a changenode is identity.
         def identity(x):
             return x
 
         # A function generating function.  Sets up an environment for the
         # inner function.
         def cmp_by_rev_func(revlog):
             # Compare two nodes by their revision number in the environment's
             # revision history.  Since the revision number both represents the
             # most efficient order to read the nodes in, and represents a
             # topological sorting of the nodes, this function is often useful.
             def cmp_by_rev(a, b):
                 return cmp(revlog.rev(a), revlog.rev(b))
             return cmp_by_rev
 
         # If we determine that a particular file or manifest node must be a
         # node that the recipient of the changegroup will already have, we can
         # also assume the recipient will have all the parents.  This function
         # prunes them from the set of missing nodes.
         def prune_parents(revlog, hasset, msngset):
             haslst = hasset.keys()
             haslst.sort(cmp_by_rev_func(revlog))
             for node in haslst:
                 parentlst = [p for p in revlog.parents(node) if p != nullid]
                 while parentlst:
                     n = parentlst.pop()
                     if n not in hasset:
                         hasset[n] = 1
                         p = [p for p in revlog.parents(n) if p != nullid]
                         parentlst.extend(p)
             for n in hasset:
                 msngset.pop(n, None)
 
         # This is a function generating function used to set up an environment
         # for the inner function to execute in.
         def manifest_and_file_collector(changedfileset):
             # This is an information gathering function that gathers
             # information from each changeset node that goes out as part of
             # the changegroup.  The information gathered is a list of which
             # manifest nodes are potentially required (the recipient may
             # already have them) and total list of all files which were
             # changed in any changeset in the changegroup.
             #
             # We also remember the first changenode we saw any manifest
             # referenced by so we can later determine which changenode 'owns'
             # the manifest.
             def collect_manifests_and_files(clnode):
                 c = cl.read(clnode)
                 for f in c[3]:
                     # This is to make sure we only have one instance of each
                     # filename string for each filename.
                     changedfileset.setdefault(f, f)
                 msng_mnfst_set.setdefault(c[0], clnode)
             return collect_manifests_and_files
 
         # Figure out which manifest nodes (of the ones we think might be part
         # of the changegroup) the recipient must know about and remove them
         # from the changegroup.
         def prune_manifests():
             has_mnfst_set = {}
             for n in msng_mnfst_set:
                 # If a 'missing' manifest thinks it belongs to a changenode
                 # the recipient is assumed to have, obviously the recipient
                 # must have that manifest.
                 linknode = cl.node(mnfst.linkrev(n))
                 if linknode in has_cl_set:
                     has_mnfst_set[n] = 1
             prune_parents(mnfst, has_mnfst_set, msng_mnfst_set)
 
         # Use the information collected in collect_manifests_and_files to say
         # which changenode any manifestnode belongs to.
         def lookup_manifest_link(mnfstnode):
             return msng_mnfst_set[mnfstnode]
 
         # A function generating function that sets up the initial environment
         # the inner function.
         def filenode_collector(changedfiles):
             next_rev = [0]
             # This gathers information from each manifestnode included in the
             # changegroup about which filenodes the manifest node references
             # so we can include those in the changegroup too.
             #
             # It also remembers which changenode each filenode belongs to.  It
             # does this by assuming the a filenode belongs to the changenode
             # the first manifest that references it belongs to.
             def collect_msng_filenodes(mnfstnode):
                 r = mnfst.rev(mnfstnode)
                 if r == next_rev[0]:
                     # If the last rev we looked at was the one just previous,
                     # we only need to see a diff.
                     delta = mdiff.patchtext(mnfst.delta(mnfstnode))
                     # For each line in the delta
                     for dline in delta.splitlines():
                         # get the filename and filenode for that line
                         f, fnode = dline.split('\0')
                         fnode = bin(fnode[:40])
                         f = changedfiles.get(f, None)
                         # And if the file is in the list of files we care
                         # about.
                         if f is not None:
                             # Get the changenode this manifest belongs to
                             clnode = msng_mnfst_set[mnfstnode]
                             # Create the set of filenodes for the file if
                             # there isn't one already.
                             ndset = msng_filenode_set.setdefault(f, {})
                             # And set the filenode's changelog node to the
                             # manifest's if it hasn't been set already.
                             ndset.setdefault(fnode, clnode)
                 else:
                     # Otherwise we need a full manifest.
                     m = mnfst.read(mnfstnode)
                     # For every file in we care about.
                     for f in changedfiles:
                         fnode = m.get(f, None)
                         # If it's in the manifest
                         if fnode is not None:
                             # See comments above.
                             clnode = msng_mnfst_set[mnfstnode]
                             ndset = msng_filenode_set.setdefault(f, {})
                             ndset.setdefault(fnode, clnode)
                 # Remember the revision we hope to see next.
                 next_rev[0] = r + 1
             return collect_msng_filenodes
 
         # We have a list of filenodes we think we need for a file, lets remove
         # all those we now the recipient must have.
         def prune_filenodes(f, filerevlog):
             msngset = msng_filenode_set[f]
             hasset = {}
             # If a 'missing' filenode thinks it belongs to a changenode we
             # assume the recipient must have, then the recipient must have
             # that filenode.
             for n in msngset:
                 clnode = cl.node(filerevlog.linkrev(n))
                 if clnode in has_cl_set:
                     hasset[n] = 1
             prune_parents(filerevlog, hasset, msngset)
 
         # A function generator function that sets up the a context for the
         # inner function.
         def lookup_filenode_link_func(fname):
             msngset = msng_filenode_set[fname]
             # Lookup the changenode the filenode belongs to.
             def lookup_filenode_link(fnode):
                 return msngset[fnode]
             return lookup_filenode_link
 
         # Now that we have all theses utility functions to help out and
         # logically divide up the task, generate the group.
         def gengroup():
             # The set of changed files starts empty.
             changedfiles = {}
             # Create a changenode group generator that will call our functions
             # back to lookup the owning changenode and collect information.
             group = cl.group(msng_cl_lst, identity,
                              manifest_and_file_collector(changedfiles))
             for chnk in group:
                 yield chnk
 
             # The list of manifests has been collected by the generator
             # calling our functions back.
             prune_manifests()
             msng_mnfst_lst = msng_mnfst_set.keys()
             # Sort the manifestnodes by revision number.
             msng_mnfst_lst.sort(cmp_by_rev_func(mnfst))
             # Create a generator for the manifestnodes that calls our lookup
             # and data collection functions back.
             group = mnfst.group(msng_mnfst_lst, lookup_manifest_link,
                                 filenode_collector(changedfiles))
             for chnk in group:
                 yield chnk
 
             # These are no longer needed, dereference and toss the memory for
             # them.
             msng_mnfst_lst = None
             msng_mnfst_set.clear()
 
             changedfiles = changedfiles.keys()
             changedfiles.sort()
             # Go through all our files in order sorted by name.
             for fname in changedfiles:
                 filerevlog = self.file(fname)
                 # Toss out the filenodes that the recipient isn't really
                 # missing.
                 if msng_filenode_set.has_key(fname):
                     prune_filenodes(fname, filerevlog)
                     msng_filenode_lst = msng_filenode_set[fname].keys()
                 else:
                     msng_filenode_lst = []
                 # If any filenodes are left, generate the group for them,
                 # otherwise don't bother.
                 if len(msng_filenode_lst) > 0:
                     yield changegroup.genchunk(fname)
                     # Sort the filenodes by their revision #
                     msng_filenode_lst.sort(cmp_by_rev_func(filerevlog))
                     # Create a group generator and only pass in a changenode
                     # lookup function as we need to collect no information
                     # from filenodes.
                     group = filerevlog.group(msng_filenode_lst,
                                              lookup_filenode_link_func(fname))
                     for chnk in group:
                         yield chnk
                 if msng_filenode_set.has_key(fname):
                     # Don't need this anymore, toss it to free memory.
                     del msng_filenode_set[fname]
             # Signal that no more groups are left.
             yield changegroup.closechunk()
 
             if msng_cl_lst:
                 self.hook('outgoing', node=hex(msng_cl_lst[0]), source=source)
 
         return util.chunkbuffer(gengroup())
 
     def changegroup(self, basenodes, source):
         """Generate a changegroup of all nodes that we have that a recipient
         doesn't.
 
         This is much easier than the previous function as we can assume that
         the recipient has any changenode we aren't sending them."""
 
         self.hook('preoutgoing', throw=True, source=source)
 
         cl = self.changelog
         nodes = cl.nodesbetween(basenodes, None)[0]
         revset = dict.fromkeys([cl.rev(n) for n in nodes])
         self.changegroupinfo(nodes)
 
         def identity(x):
             return x
 
         def gennodelst(revlog):
             for r in xrange(0, revlog.count()):
                 n = revlog.node(r)
                 if revlog.linkrev(n) in revset:
                     yield n
 
         def changed_file_collector(changedfileset):
             def collect_changed_files(clnode):
                 c = cl.read(clnode)
                 for fname in c[3]:
                     changedfileset[fname] = 1
             return collect_changed_files
 
         def lookuprevlink_func(revlog):
             def lookuprevlink(n):
                 return cl.node(revlog.linkrev(n))
             return lookuprevlink
 
         def gengroup():
             # construct a list of all changed files
             changedfiles = {}
 
             for chnk in cl.group(nodes, identity,
                                  changed_file_collector(changedfiles)):
                 yield chnk
             changedfiles = changedfiles.keys()
             changedfiles.sort()
 
             mnfst = self.manifest
             nodeiter = gennodelst(mnfst)
             for chnk in mnfst.group(nodeiter, lookuprevlink_func(mnfst)):
                 yield chnk
 
             for fname in changedfiles:
                 filerevlog = self.file(fname)
                 nodeiter = gennodelst(filerevlog)
                 nodeiter = list(nodeiter)
                 if nodeiter:
                     yield changegroup.genchunk(fname)
                     lookup = lookuprevlink_func(filerevlog)
                     for chnk in filerevlog.group(nodeiter, lookup):
                         yield chnk
 
             yield changegroup.closechunk()
 
             if nodes:
                 self.hook('outgoing', node=hex(nodes[0]), source=source)
 
         return util.chunkbuffer(gengroup())
 
     def addchangegroup(self, source, srctype, url):
         """add changegroup to repo.
 
         return values:
         - nothing changed or no source: 0
         - more heads than before: 1+added heads (2..n)
         - less 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 cl.count()
 
         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
 
         tr = self.transaction()
 
         # write changelog data to temp files so concurrent readers will not see
         # inconsistent view
         cl = None
         try:
-            cl = appendfile.appendchangelog(self.sopener,
-                                            self.changelog.version)
-
+            cl = appendfile.appendchangelog(self.sopener)
             oldheads = len(cl.heads())
 
             # pull off the changeset group
             self.ui.status(_("adding changesets\n"))
             cor = cl.count() - 1
             chunkiter = changegroup.chunkiter(source)
             if cl.addgroup(chunkiter, csmap, tr, 1) is None:
                 raise util.Abort(_("received changelog group is empty"))
             cnr = cl.count() - 1
             changesets = cnr - cor
 
             # pull off the manifest group
             self.ui.status(_("adding manifests\n"))
             chunkiter = changegroup.chunkiter(source)
             # 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
             self.manifest.addgroup(chunkiter, revmap, tr)
 
             # process the files
             self.ui.status(_("adding file changes\n"))
             while 1:
                 f = changegroup.getchunk(source)
                 if not f:
                     break
                 self.ui.debug(_("adding %s revisions\n") % f)
                 fl = self.file(f)
                 o = fl.count()
                 chunkiter = changegroup.chunkiter(source)
                 if fl.addgroup(chunkiter, revmap, tr) is None:
                     raise util.Abort(_("received file revlog group is empty"))
                 revisions += fl.count() - o
                 files += 1
 
             cl.writedata()
         finally:
             if cl:
                 cl.cleanup()
 
         # make changelog see real files again
-        self.changelog = changelog.changelog(self.sopener,
-                                             self.changelog.version)
+        self.changelog = changelog.changelog(self.sopener)
         self.changelog.checkinlinesize(tr)
 
         newheads = len(self.changelog.heads())
         heads = ""
         if oldheads and newheads != oldheads:
             heads = _(" (%+d heads)") % (newheads - oldheads)
 
         self.ui.status(_("added %d changesets"
                          " with %d changes to %d files%s\n")
                          % (changesets, revisions, files, heads))
 
         if changesets > 0:
             self.hook('pretxnchangegroup', throw=True,
                       node=hex(self.changelog.node(cor+1)), source=srctype,
                       url=url)
 
         tr.close()
 
         if changesets > 0:
             self.hook("changegroup", node=hex(self.changelog.node(cor+1)),
                       source=srctype, url=url)
 
             for i in xrange(cor + 1, cnr + 1):
                 self.hook("incoming", node=hex(self.changelog.node(i)),
                           source=srctype, url=url)
 
         # never return 0 here:
         if newheads < oldheads:
             return newheads - oldheads - 1
         else:
             return newheads - oldheads + 1
 
 
     def stream_in(self, remote):
         fp = remote.stream_out()
         l = fp.readline()
         try:
             resp = int(l)
         except ValueError:
             raise util.UnexpectedOutput(
                 _('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 util.UnexpectedOutput(
                 _('Unexpected response from remote server:'), l)
         self.ui.status(_('%d files to transfer, %s of data\n') %
                        (total_files, util.bytecount(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 util.UnexpectedOutput(
                     _('Unexpected response from remote server:'), l)
             self.ui.debug('adding %s (%s)\n' % (name, util.bytecount(size)))
             ofp = self.sopener(name, 'w')
             for chunk in util.filechunkiter(fp, limit=size):
                 ofp.write(chunk)
             ofp.close()
         elapsed = time.time() - start
         if elapsed <= 0:
             elapsed = 0.001
         self.ui.status(_('transferred %s in %.1f seconds (%s/sec)\n') %
                        (util.bytecount(total_bytes), elapsed,
                         util.bytecount(total_bytes / elapsed)))
         self.reload()
         return len(self.heads()) + 1
 
     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 stream and not heads and remote.capable('stream'):
             return self.stream_in(remote)
         return self.pull(remote, heads)
 
 # 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:
             util.rename(src, dest)
     return a
 
 def instance(ui, path, create):
     return localrepository(ui, util.drop_scheme('file', path), create)
 
 def islocal(path):
     return True

mercurial/manifest.py

@@ -1,215 +1,215
 # manifest.py - manifest revision class for mercurial
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from revlog import *
 from i18n import _
 import array, bisect, struct, mdiff
 
 class manifestdict(dict):
     def __init__(self, mapping=None, flags=None):
         if mapping is None: mapping = {}
         if flags is None: flags = {}
         dict.__init__(self, mapping)
         self._flags = flags
     def flags(self, f):
         return self._flags.get(f, "")
     def execf(self, f):
         "test for executable in manifest flags"
         return "x" in self.flags(f)
     def linkf(self, f):
         "test for symlink in manifest flags"
         return "l" in self.flags(f)
     def rawset(self, f, entry):
         self[f] = bin(entry[:40])
         fl = entry[40:-1]
         if fl: self._flags[f] = fl
     def set(self, f, execf=False, linkf=False):
         if linkf: self._flags[f] = "l"
         elif execf: self._flags[f] = "x"
         else: self._flags[f] = ""
     def copy(self):
         return manifestdict(dict.copy(self), dict.copy(self._flags))
 
 class manifest(revlog):
-    def __init__(self, opener, defversion=REVLOGV0):
+    def __init__(self, opener):
         self.mapcache = None
         self.listcache = None
-        revlog.__init__(self, opener, "00manifest.i", defversion)
+        revlog.__init__(self, opener, "00manifest.i")
 
     def parselines(self, lines):
         for l in lines.splitlines(1):
             yield l.split('\0')
 
     def readdelta(self, node):
         delta = mdiff.patchtext(self.delta(node))
         deltamap = manifestdict()
         for f, n in self.parselines(delta):
             deltamap.rawset(f, n)
         return deltamap
 
     def read(self, node):
         if node == nullid: return manifestdict() # don't upset local cache
         if self.mapcache and self.mapcache[0] == node:
             return self.mapcache[1]
         text = self.revision(node)
         self.listcache = array.array('c', text)
         mapping = manifestdict()
         for f, n in self.parselines(text):
             mapping.rawset(f, n)
         self.mapcache = (node, mapping)
         return mapping
 
     def _search(self, m, s, lo=0, hi=None):
         '''return a tuple (start, end) that says where to find s within m.
 
         If the string is found m[start:end] are the line containing
         that string.  If start == end the string was not found and
         they indicate the proper sorted insertion point.  This was
         taken from bisect_left, and modified to find line start/end as
         it goes along.
 
         m should be a buffer or a string
         s is a string'''
         def advance(i, c):
             while i < lenm and m[i] != c:
                 i += 1
             return i
         lenm = len(m)
         if not hi:
             hi = lenm
         while lo < hi:
             mid = (lo + hi) // 2
             start = mid
             while start > 0 and m[start-1] != '\n':
                 start -= 1
             end = advance(start, '\0')
             if m[start:end] < s:
                 # we know that after the null there are 40 bytes of sha1
                 # this translates to the bisect lo = mid + 1
                 lo = advance(end + 40, '\n') + 1
             else:
                 # this translates to the bisect hi = mid
                 hi = start
         end = advance(lo, '\0')
         found = m[lo:end]
         if cmp(s, found) == 0:
             # we know that after the null there are 40 bytes of sha1
             end = advance(end + 40, '\n')
             return (lo, end+1)
         else:
             return (lo, lo)
 
     def find(self, node, f):
         '''look up entry for a single file efficiently.
         return (node, flags) pair if found, (None, None) if not.'''
         if self.mapcache and node == self.mapcache[0]:
             return self.mapcache[1].get(f), self.mapcache[1].flags(f)
         text = self.revision(node)
         start, end = self._search(text, f)
         if start == end:
             return None, None
         l = text[start:end]
         f, n = l.split('\0')
         return bin(n[:40]), n[40:-1]
 
     def add(self, map, transaction, link, p1=None, p2=None,
             changed=None):
         # apply the changes collected during the bisect loop to our addlist
         # return a delta suitable for addrevision
         def addlistdelta(addlist, x):
             # start from the bottom up
             # so changes to the offsets don't mess things up.
             i = len(x)
             while i > 0:
                 i -= 1
                 start = x[i][0]
                 end = x[i][1]
                 if x[i][2]:
                     addlist[start:end] = array.array('c', x[i][2])
                 else:
                     del addlist[start:end]
             return "".join([struct.pack(">lll", d[0], d[1], len(d[2])) + d[2] \
                             for d in x ])
 
         def checkforbidden(f):
             if '\n' in f or '\r' in f:
                 raise RevlogError(_("'\\n' and '\\r' disallowed in filenames"))
 
         # if we're using the listcache, make sure it is valid and
         # parented by the same node we're diffing against
         if not changed or not self.listcache or not p1 or \
                self.mapcache[0] != p1:
             files = map.keys()
             files.sort()
 
             for f in files:
                 checkforbidden(f)
 
             # if this is changed to support newlines in filenames,
             # be sure to check the templates/ dir again (especially *-raw.tmpl)
             text = ["%s\000%s%s\n" % (f, hex(map[f]), map.flags(f)) for f in files]
             self.listcache = array.array('c', "".join(text))
             cachedelta = None
         else:
             addlist = self.listcache
 
             for f in changed[0]:
                 checkforbidden(f)
             # combine the changed lists into one list for sorting
             work = [[x, 0] for x in changed[0]]
             work[len(work):] = [[x, 1] for x in changed[1]]
             work.sort()
 
             delta = []
             dstart = None
             dend = None
             dline = [""]
             start = 0
             # zero copy representation of addlist as a buffer
             addbuf = buffer(addlist)
 
             # start with a readonly loop that finds the offset of
             # each line and creates the deltas
             for w in work:
                 f = w[0]
                 # bs will either be the index of the item or the insert point
                 start, end = self._search(addbuf, f, start)
                 if w[1] == 0:
                     l = "%s\000%s%s\n" % (f, hex(map[f]), map.flags(f))
                 else:
                     l = ""
                 if start == end and w[1] == 1:
                     # item we want to delete was not found, error out
                     raise AssertionError(
                             _("failed to remove %s from manifest") % f)
                 if dstart != None and dstart <= start and dend >= start:
                     if dend < end:
                         dend = end
                     if l:
                         dline.append(l)
                 else:
                     if dstart != None:
                         delta.append([dstart, dend, "".join(dline)])
                     dstart = start
                     dend = end
                     dline = [l]
 
             if dstart != None:
                 delta.append([dstart, dend, "".join(dline)])
             # apply the delta to the addlist, and get a delta for addrevision
             cachedelta = addlistdelta(addlist, delta)
 
             # the delta is only valid if we've been processing the tip revision
             if self.mapcache[0] != self.tip():
                 cachedelta = None
             self.listcache = addlist
 
         n = self.addrevision(buffer(self.listcache), transaction, link, p1,  \
                              p2, cachedelta)
         self.mapcache = (n, map)
 
         return n

mercurial/revlog.py

@@ -1,1297 +1,1299
 """
 revlog.py - storage back-end for mercurial
 
 This provides efficient delta storage with O(1) retrieve and append
 and O(changes) merge between branches
 
 Copyright 2005, 2006 Matt Mackall <[e-mail]>
 
 This software may be used and distributed according to the terms
 of the GNU General Public License, incorporated herein by reference.
 """
 
 from node import *
 from i18n import _
 import binascii, changegroup, errno, ancestor, mdiff, os
 import sha, struct, util, zlib
 
 # revlog version strings
 REVLOGV0 = 0
 REVLOGNG = 1
 
 # revlog flags
 REVLOGNGINLINEDATA = (1 << 16)
 REVLOG_DEFAULT_FLAGS = REVLOGNGINLINEDATA
 
 REVLOG_DEFAULT_FORMAT = REVLOGNG
 REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS
 
 def flagstr(flag):
     if flag == "inline":
         return REVLOGNGINLINEDATA
     raise RevlogError(_("unknown revlog flag %s") % flag)
 
 def hash(text, p1, p2):
     """generate a hash from the given text and its parent hashes
 
     This hash combines both the current file contents and its history
     in a manner that makes it easy to distinguish nodes with the same
     content in the revision graph.
     """
     l = [p1, p2]
     l.sort()
     s = sha.new(l[0])
     s.update(l[1])
     s.update(text)
     return s.digest()
 
 def compress(text):
     """ generate a possibly-compressed representation of text """
     if not text: return ("", text)
     if len(text) < 44:
         if text[0] == '\0': return ("", text)
         return ('u', text)
     bin = zlib.compress(text)
     if len(bin) > len(text):
         if text[0] == '\0': return ("", text)
         return ('u', text)
     return ("", bin)
 
 def decompress(bin):
     """ decompress the given input """
     if not bin: return bin
     t = bin[0]
     if t == '\0': return bin
     if t == 'x': return zlib.decompress(bin)
     if t == 'u': return bin[1:]
     raise RevlogError(_("unknown compression type %r") % t)
 
 indexformatv0 = ">4l20s20s20s"
 v0shaoffset = 56
 # index ng:
 # 6 bytes offset
 # 2 bytes flags
 # 4 bytes compressed length
 # 4 bytes uncompressed length
 # 4 bytes: base rev
 # 4 bytes link rev
 # 4 bytes parent 1 rev
 # 4 bytes parent 2 rev
 # 32 bytes: nodeid
 indexformatng = ">Qiiiiii20s12x"
 ngshaoffset = 32
 versionformat = ">I"
 
 class lazyparser(object):
     """
     this class avoids the need to parse the entirety of large indices
     """
 
     # lazyparser is not safe to use on windows if win32 extensions not
     # available. it keeps file handle open, which make it not possible
     # to break hardlinks on local cloned repos.
     safe_to_use = os.name != 'nt' or (not util.is_win_9x() and
                                       hasattr(util, 'win32api'))
 
     def __init__(self, dataf, size, indexformat, shaoffset):
         self.dataf = dataf
         self.format = indexformat
         self.s = struct.calcsize(indexformat)
         self.indexformat = indexformat
         self.datasize = size
         self.l = size/self.s
         self.index = [None] * self.l
         self.map = {nullid: nullrev}
         self.allmap = 0
         self.all = 0
         self.mapfind_count = 0
         self.shaoffset = shaoffset
 
     def loadmap(self):
         """
         during a commit, we need to make sure the rev being added is
         not a duplicate.  This requires loading the entire index,
         which is fairly slow.  loadmap can load up just the node map,
         which takes much less time.
         """
         if self.allmap: return
         end = self.datasize
         self.allmap = 1
         cur = 0
         count = 0
         blocksize = self.s * 256
         self.dataf.seek(0)
         while cur < end:
             data = self.dataf.read(blocksize)
             off = 0
             for x in xrange(256):
                 n = data[off + self.shaoffset:off + self.shaoffset + 20]
                 self.map[n] = count
                 count += 1
                 if count >= self.l:
                     break
                 off += self.s
             cur += blocksize
 
     def loadblock(self, blockstart, blocksize, data=None):
         if self.all: return
         if data is None:
             self.dataf.seek(blockstart)
             if blockstart + blocksize > self.datasize:
                 # the revlog may have grown since we've started running,
                 # but we don't have space in self.index for more entries.
                 # limit blocksize so that we don't get too much data.
                 blocksize = max(self.datasize - blockstart, 0)
             data = self.dataf.read(blocksize)
         lend = len(data) / self.s
         i = blockstart / self.s
         off = 0
         # lazyindex supports __delitem__
         if lend > len(self.index) - i:
             lend = len(self.index) - i
         for x in xrange(lend):
             if self.index[i + x] == None:
                 b = data[off : off + self.s]
                 self.index[i + x] = b
                 n = b[self.shaoffset:self.shaoffset + 20]
                 self.map[n] = i + x
             off += self.s
 
     def findnode(self, node):
         """search backwards through the index file for a specific node"""
         if self.allmap: return None
 
         # hg log will cause many many searches for the manifest
         # nodes.  After we get called a few times, just load the whole
         # thing.
         if self.mapfind_count > 8:
             self.loadmap()
             if node in self.map:
                 return node
             return None
         self.mapfind_count += 1
         last = self.l - 1
         while self.index[last] != None:
             if last == 0:
                 self.all = 1
                 self.allmap = 1
                 return None
             last -= 1
         end = (last + 1) * self.s
         blocksize = self.s * 256
         while end >= 0:
             start = max(end - blocksize, 0)
             self.dataf.seek(start)
             data = self.dataf.read(end - start)
             findend = end - start
             while True:
                 # we're searching backwards, so weh have to make sure
                 # we don't find a changeset where this node is a parent
                 off = data.rfind(node, 0, findend)
                 findend = off
                 if off >= 0:
                     i = off / self.s
                     off = i * self.s
                     n = data[off + self.shaoffset:off + self.shaoffset + 20]
                     if n == node:
                         self.map[n] = i + start / self.s
                         return node
                 else:
                     break
             end -= blocksize
         return None
 
     def loadindex(self, i=None, end=None):
         if self.all: return
         all = False
         if i == None:
             blockstart = 0
             blocksize = (512 / self.s) * self.s
             end = self.datasize
             all = True
         else:
             if end:
                 blockstart = i * self.s
                 end = end * self.s
                 blocksize = end - blockstart
             else:
                 blockstart = (i & ~(32)) * self.s
                 blocksize = self.s * 64
                 end = blockstart + blocksize
         while blockstart < end:
             self.loadblock(blockstart, blocksize)
             blockstart += blocksize
         if all: self.all = True
 
 class lazyindex(object):
     """a lazy version of the index array"""
     def __init__(self, parser):
         self.p = parser
     def __len__(self):
         return len(self.p.index)
     def load(self, pos):
         if pos < 0:
             pos += len(self.p.index)
         self.p.loadindex(pos)
         return self.p.index[pos]
     def __getitem__(self, pos):
         ret = self.p.index[pos] or self.load(pos)
         if isinstance(ret, str):
             ret = struct.unpack(self.p.indexformat, ret)
         return ret
     def __setitem__(self, pos, item):
         self.p.index[pos] = item
     def __delitem__(self, pos):
         del self.p.index[pos]
     def append(self, e):
         self.p.index.append(e)
 
 class lazymap(object):
     """a lazy version of the node map"""
     def __init__(self, parser):
         self.p = parser
     def load(self, key):
         n = self.p.findnode(key)
         if n == None:
             raise KeyError(key)
     def __contains__(self, key):
         if key in self.p.map:
             return True
         self.p.loadmap()
         return key in self.p.map
     def __iter__(self):
         yield nullid
         for i in xrange(self.p.l):
             ret = self.p.index[i]
             if not ret:
                 self.p.loadindex(i)
                 ret = self.p.index[i]
             if isinstance(ret, str):
                 ret = struct.unpack(self.p.indexformat, ret)
             yield ret[-1]
     def __getitem__(self, key):
         try:
             return self.p.map[key]
         except KeyError:
             try:
                 self.load(key)
                 return self.p.map[key]
             except KeyError:
                 raise KeyError("node " + hex(key))
     def __setitem__(self, key, val):
         self.p.map[key] = val
     def __delitem__(self, key):
         del self.p.map[key]
 
 class RevlogError(Exception): pass
 class LookupError(RevlogError): pass
 
 class revlog(object):
     """
     the underlying revision storage object
 
     A revlog consists of two parts, an index and the revision data.
 
     The index is a file with a fixed record size containing
     information on each revision, includings its nodeid (hash), the
     nodeids of its parents, the position and offset of its data within
     the data file, and the revision it's based on. Finally, each entry
     contains a linkrev entry that can serve as a pointer to external
     data.
 
     The revision data itself is a linear collection of data chunks.
     Each chunk represents a revision and is usually represented as a
     delta against the previous chunk. To bound lookup time, runs of
     deltas are limited to about 2 times the length of the original
     version data. This makes retrieval of a version proportional to
     its size, or O(1) relative to the number of revisions.
 
     Both pieces of the revlog are written to in an append-only
     fashion, which means we never need to rewrite a file to insert or
     remove data, and can use some simple techniques to avoid the need
     for locking while reading.
     """
-    def __init__(self, opener, indexfile, defversion=REVLOG_DEFAULT_VERSION):
+    def __init__(self, opener, indexfile):
         """
         create a revlog object
 
         opener is a function that abstracts the file opening operation
         and can be used to implement COW semantics or the like.
         """
         self.indexfile = indexfile
         self.datafile = indexfile[:-2] + ".d"
         self.opener = opener
 
         self.indexstat = None
         self.cache = None
         self.chunkcache = None
-        self.defversion = defversion
+        self.defversion=REVLOG_DEFAULT_VERSION
+        if hasattr(opener, "defversion"):
+            self.defversion = opener.defversion
         self.load()
 
     def load(self):
         v = self.defversion
         try:
             f = self.opener(self.indexfile)
             i = f.read(4)
             f.seek(0)
         except IOError, inst:
             if inst.errno != errno.ENOENT:
                 raise
             i = ""
         else:
             try:
                 st = util.fstat(f)
             except AttributeError, inst:
                 st = None
             else:
                 oldst = self.indexstat
                 if (oldst and st.st_dev == oldst.st_dev
                     and st.st_ino == oldst.st_ino
                     and st.st_mtime == oldst.st_mtime
                     and st.st_ctime == oldst.st_ctime):
                     return
                 self.indexstat = st
             if len(i) > 0:
                 v = struct.unpack(versionformat, i)[0]
         flags = v & ~0xFFFF
         fmt = v & 0xFFFF
         if fmt == REVLOGV0:
             if flags:
                 raise RevlogError(_("index %s unknown flags %#04x for format v0")
                                   % (self.indexfile, flags >> 16))
         elif fmt == REVLOGNG:
             if flags & ~REVLOGNGINLINEDATA:
                 raise RevlogError(_("index %s unknown flags %#04x for revlogng")
                                   % (self.indexfile, flags >> 16))
         else:
             raise RevlogError(_("index %s unknown format %d")
                               % (self.indexfile, fmt))
         self.version = v
         if v == REVLOGV0:
             self.indexformat = indexformatv0
             shaoffset = v0shaoffset
         else:
             self.indexformat = indexformatng
             shaoffset = ngshaoffset
 
         if i:
             if (lazyparser.safe_to_use and not self.inlinedata() and
                 st and st.st_size > 10000):
                 # big index, let's parse it on demand
                 parser = lazyparser(f, st.st_size, self.indexformat, shaoffset)
                 self.index = lazyindex(parser)
                 self.nodemap = lazymap(parser)
             else:
                 self.parseindex(f, st)
             if self.version != REVLOGV0:
                 e = list(self.index[0])
                 type = self.ngtype(e[0])
                 e[0] = self.offset_type(0, type)
                 self.index[0] = e
         else:
             self.nodemap = {nullid: nullrev}
             self.index = []
 
 
     def parseindex(self, fp, st):
         s = struct.calcsize(self.indexformat)
         self.index = []
         self.nodemap =  {nullid: nullrev}
         inline = self.inlinedata()
         n = 0
         leftover = None
         while True:
             if st:
                 data = fp.read(65536)
             else:
                 # hack for httprangereader, it doesn't do partial reads well
                 data = fp.read()
             if not data:
                 break
             if n == 0 and self.inlinedata():
                 # cache the first chunk
                 self.chunkcache = (0, data)
             if leftover:
                 data = leftover + data
                 leftover = None
             off = 0
             l = len(data)
             while off < l:
                 if l - off < s:
                     leftover = data[off:]
                     break
                 cur = data[off:off + s]
                 off += s
                 e = struct.unpack(self.indexformat, cur)
                 self.index.append(e)
                 self.nodemap[e[-1]] = n
                 n += 1
                 if inline:
                     if e[1] < 0:
                         break
                     off += e[1]
                     if off > l:
                         # some things don't seek well, just read it
                         fp.read(off - l)
                         break
             if not st:
                 break
 
 
     def ngoffset(self, q):
         if q & 0xFFFF:
             raise RevlogError(_('%s: incompatible revision flag %x') %
                               (self.indexfile, q))
         return long(q >> 16)
 
     def ngtype(self, q):
         return int(q & 0xFFFF)
 
     def offset_type(self, offset, type):
         return long(long(offset) << 16 | type)
 
     def loadindex(self, start, end):
         """load a block of indexes all at once from the lazy parser"""
         if isinstance(self.index, lazyindex):
             self.index.p.loadindex(start, end)
 
     def loadindexmap(self):
         """loads both the map and the index from the lazy parser"""
         if isinstance(self.index, lazyindex):
             p = self.index.p
             p.loadindex()
             self.nodemap = p.map
 
     def loadmap(self):
         """loads the map from the lazy parser"""
         if isinstance(self.nodemap, lazymap):
             self.nodemap.p.loadmap()
             self.nodemap = self.nodemap.p.map
 
     def inlinedata(self): return self.version & REVLOGNGINLINEDATA
     def tip(self): return self.node(len(self.index) - 1)
     def count(self): return len(self.index)
     def node(self, rev):
         return rev == nullrev and nullid or self.index[rev][-1]
     def rev(self, node):
         try:
             return self.nodemap[node]
         except KeyError:
             raise LookupError(_('%s: no node %s') % (self.indexfile, hex(node)))
     def linkrev(self, node):
         return (node == nullid) and nullrev or self.index[self.rev(node)][-4]
     def parents(self, node):
         if node == nullid: return (nullid, nullid)
         r = self.rev(node)
         d = self.index[r][-3:-1]
         if self.version == REVLOGV0:
             return d
         return (self.node(d[0]), self.node(d[1]))
     def parentrevs(self, rev):
         if rev == nullrev:
             return (nullrev, nullrev)
         d = self.index[rev][-3:-1]
         if self.version == REVLOGV0:
             return (self.rev(d[0]), self.rev(d[1]))
         return d
     def start(self, rev):
         if rev == nullrev:
             return 0
         if self.version != REVLOGV0:
             return self.ngoffset(self.index[rev][0])
         return self.index[rev][0]
 
     def end(self, rev): return self.start(rev) + self.length(rev)
 
     def size(self, rev):
         """return the length of the uncompressed text for a given revision"""
         if rev == nullrev:
             return 0
         l = -1
         if self.version != REVLOGV0:
             l = self.index[rev][2]
         if l >= 0:
             return l
 
         t = self.revision(self.node(rev))
         return len(t)
 
         # alternate implementation, The advantage to this code is it
         # will be faster for a single revision.  But, the results are not
         # cached, so finding the size of every revision will be slower.
         """
         if self.cache and self.cache[1] == rev:
             return len(self.cache[2])
 
         base = self.base(rev)
         if self.cache and self.cache[1] >= base and self.cache[1] < rev:
             base = self.cache[1]
             text = self.cache[2]
         else:
             text = self.revision(self.node(base))
 
         l = len(text)
         for x in xrange(base + 1, rev + 1):
             l = mdiff.patchedsize(l, self.chunk(x))
         return l
         """
 
     def length(self, rev):
         if rev == nullrev:
             return 0
         else:
             return self.index[rev][1]
     def base(self, rev):
         if (rev == nullrev):
             return nullrev
         else:
             return self.index[rev][-5]
 
     def reachable(self, node, stop=None):
         """return a hash of all nodes ancestral to a given node, including
          the node itself, stopping when stop is matched"""
         reachable = {}
         visit = [node]
         reachable[node] = 1
         if stop:
             stopn = self.rev(stop)
         else:
             stopn = 0
         while visit:
             n = visit.pop(0)
             if n == stop:
                 continue
             if n == nullid:
                 continue
             for p in self.parents(n):
                 if self.rev(p) < stopn:
                     continue
                 if p not in reachable:
                     reachable[p] = 1
                     visit.append(p)
         return reachable
 
     def nodesbetween(self, roots=None, heads=None):
         """Return a tuple containing three elements. Elements 1 and 2 contain
         a final list bases and heads after all the unreachable ones have been
         pruned.  Element 0 contains a topologically sorted list of all
 
         nodes that satisfy these constraints:
         1. All nodes must be descended from a node in roots (the nodes on
            roots are considered descended from themselves).
         2. All nodes must also be ancestors of a node in heads (the nodes in
            heads are considered to be their own ancestors).
 
         If roots is unspecified, nullid is assumed as the only root.
         If heads is unspecified, it is taken to be the output of the
         heads method (i.e. a list of all nodes in the repository that
         have no children)."""
         nonodes = ([], [], [])
         if roots is not None:
             roots = list(roots)
             if not roots:
                 return nonodes
             lowestrev = min([self.rev(n) for n in roots])
         else:
             roots = [nullid] # Everybody's a descendent of nullid
             lowestrev = nullrev
         if (lowestrev == nullrev) and (heads is None):
             # We want _all_ the nodes!
             return ([self.node(r) for r in xrange(0, self.count())],
                     [nullid], list(self.heads()))
         if heads is None:
             # All nodes are ancestors, so the latest ancestor is the last
             # node.
             highestrev = self.count() - 1
             # Set ancestors to None to signal that every node is an ancestor.
             ancestors = None
             # Set heads to an empty dictionary for later discovery of heads
             heads = {}
         else:
             heads = list(heads)
             if not heads:
                 return nonodes
             ancestors = {}
             # Turn heads into a dictionary so we can remove 'fake' heads.
             # Also, later we will be using it to filter out the heads we can't
             # find from roots.
             heads = dict.fromkeys(heads, 0)
             # Start at the top and keep marking parents until we're done.
             nodestotag = heads.keys()
             # Remember where the top was so we can use it as a limit later.
             highestrev = max([self.rev(n) for n in nodestotag])
             while nodestotag:
                 # grab a node to tag
                 n = nodestotag.pop()
                 # Never tag nullid
                 if n == nullid:
                     continue
                 # A node's revision number represents its place in a
                 # topologically sorted list of nodes.
                 r = self.rev(n)
                 if r >= lowestrev:
                     if n not in ancestors:
                         # If we are possibly a descendent of one of the roots
                         # and we haven't already been marked as an ancestor
                         ancestors[n] = 1 # Mark as ancestor
                         # Add non-nullid parents to list of nodes to tag.
                         nodestotag.extend([p for p in self.parents(n) if
                                            p != nullid])
                     elif n in heads: # We've seen it before, is it a fake head?
                         # So it is, real heads should not be the ancestors of
                         # any other heads.
                         heads.pop(n)
             if not ancestors:
                 return nonodes
             # Now that we have our set of ancestors, we want to remove any
             # roots that are not ancestors.
 
             # If one of the roots was nullid, everything is included anyway.
             if lowestrev > nullrev:
                 # But, since we weren't, let's recompute the lowest rev to not
                 # include roots that aren't ancestors.
 
                 # Filter out roots that aren't ancestors of heads
                 roots = [n for n in roots if n in ancestors]
                 # Recompute the lowest revision
                 if roots:
                     lowestrev = min([self.rev(n) for n in roots])
                 else:
                     # No more roots?  Return empty list
                     return nonodes
             else:
                 # We are descending from nullid, and don't need to care about
                 # any other roots.
                 lowestrev = nullrev
                 roots = [nullid]
         # Transform our roots list into a 'set' (i.e. a dictionary where the
         # values don't matter.
         descendents = dict.fromkeys(roots, 1)
         # Also, keep the original roots so we can filter out roots that aren't
         # 'real' roots (i.e. are descended from other roots).
         roots = descendents.copy()
         # Our topologically sorted list of output nodes.
         orderedout = []
         # Don't start at nullid since we don't want nullid in our output list,
         # and if nullid shows up in descedents, empty parents will look like
         # they're descendents.
         for r in xrange(max(lowestrev, 0), highestrev + 1):
             n = self.node(r)
             isdescendent = False
             if lowestrev == nullrev:  # Everybody is a descendent of nullid
                 isdescendent = True
             elif n in descendents:
                 # n is already a descendent
                 isdescendent = True
                 # This check only needs to be done here because all the roots
                 # will start being marked is descendents before the loop.
                 if n in roots:
                     # If n was a root, check if it's a 'real' root.
                     p = tuple(self.parents(n))
                     # If any of its parents are descendents, it's not a root.
                     if (p[0] in descendents) or (p[1] in descendents):
                         roots.pop(n)
             else:
                 p = tuple(self.parents(n))
                 # A node is a descendent if either of its parents are
                 # descendents.  (We seeded the dependents list with the roots
                 # up there, remember?)
                 if (p[0] in descendents) or (p[1] in descendents):
                     descendents[n] = 1
                     isdescendent = True
             if isdescendent and ((ancestors is None) or (n in ancestors)):
                 # Only include nodes that are both descendents and ancestors.
                 orderedout.append(n)
                 if (ancestors is not None) and (n in heads):
                     # We're trying to figure out which heads are reachable
                     # from roots.
                     # Mark this head as having been reached
                     heads[n] = 1
                 elif ancestors is None:
                     # Otherwise, we're trying to discover the heads.
                     # Assume this is a head because if it isn't, the next step
                     # will eventually remove it.
                     heads[n] = 1
                     # But, obviously its parents aren't.
                     for p in self.parents(n):
                         heads.pop(p, None)
         heads = [n for n in heads.iterkeys() if heads[n] != 0]
         roots = roots.keys()
         assert orderedout
         assert roots
         assert heads
         return (orderedout, roots, heads)
 
     def heads(self, start=None, stop=None):
         """return the list of all nodes that have no children
 
         if start is specified, only heads that are descendants of
         start will be returned
         if stop is specified, it will consider all the revs from stop
         as if they had no children
         """
         if start is None:
             start = nullid
         if stop is None:
             stop = []
         stoprevs = dict.fromkeys([self.rev(n) for n in stop])
         startrev = self.rev(start)
         reachable = {startrev: 1}
         heads = {startrev: 1}
 
         parentrevs = self.parentrevs
         for r in xrange(startrev + 1, self.count()):
             for p in parentrevs(r):
                 if p in reachable:
                     if r not in stoprevs:
                         reachable[r] = 1
                     heads[r] = 1
                 if p in heads and p not in stoprevs:
                     del heads[p]
 
         return [self.node(r) for r in heads]
 
     def children(self, node):
         """find the children of a given node"""
         c = []
         p = self.rev(node)
         for r in range(p + 1, self.count()):
             for pr in self.parentrevs(r):
                 if pr == p:
                     c.append(self.node(r))
         return c
 
     def _match(self, id):
         if isinstance(id, (long, int)):
             # rev
             return self.node(id)
         if len(id) == 20:
             # possibly a binary node
             # odds of a binary node being all hex in ASCII are 1 in 10**25
             try:
                 node = id
                 r = self.rev(node) # quick search the index
                 return node
             except LookupError:
                 pass # may be partial hex id
         try:
             # str(rev)
             rev = int(id)
             if str(rev) != id: raise ValueError
             if rev < 0: rev = self.count() + rev
             if rev < 0 or rev >= self.count(): raise ValueError
             return self.node(rev)
         except (ValueError, OverflowError):
             pass
         if len(id) == 40:
             try:
                 # a full hex nodeid?
                 node = bin(id)
                 r = self.rev(node)
                 return node
             except TypeError:
                 pass
 
     def _partialmatch(self, id):
         if len(id) < 40:
             try:
                 # hex(node)[:...]
                 bin_id = bin(id[:len(id) & ~1]) # grab an even number of digits
                 node = None
                 for n in self.nodemap:
                     if n.startswith(bin_id) and hex(n).startswith(id):
                         if node is not None:
                             raise LookupError(_("Ambiguous identifier"))
                         node = n
                 if node is not None:
                     return node
             except TypeError:
                 pass
 
     def lookup(self, id):
         """locate a node based on:
             - revision number or str(revision number)
             - nodeid or subset of hex nodeid
         """
 
         n = self._match(id)
         if n is not None:
             return n
         n = self._partialmatch(id)
         if n:
             return n
 
         raise LookupError(_("No match found"))
 
     def cmp(self, node, text):
         """compare text with a given file revision"""
         p1, p2 = self.parents(node)
         return hash(text, p1, p2) != node
 
     def makenode(self, node, text):
         """calculate a file nodeid for text, descended or possibly
         unchanged from node"""
 
         if self.cmp(node, text):
             return hash(text, node, nullid)
         return node
 
     def diff(self, a, b):
         """return a delta between two revisions"""
         return mdiff.textdiff(a, b)
 
     def patches(self, t, pl):
         """apply a list of patches to a string"""
         return mdiff.patches(t, pl)
 
     def chunk(self, rev, df=None, cachelen=4096):
         start, length = self.start(rev), self.length(rev)
         inline = self.inlinedata()
         if inline:
             start += (rev + 1) * struct.calcsize(self.indexformat)
         end = start + length
         def loadcache(df):
             cache_length = max(cachelen, length) # 4k
             if not df:
                 if inline:
                     df = self.opener(self.indexfile)
                 else:
                     df = self.opener(self.datafile)
             df.seek(start)
             self.chunkcache = (start, df.read(cache_length))
 
         if not self.chunkcache:
             loadcache(df)
 
         cache_start = self.chunkcache[0]
         cache_end = cache_start + len(self.chunkcache[1])
         if start >= cache_start and end <= cache_end:
             # it is cached
             offset = start - cache_start
         else:
             loadcache(df)
             offset = 0
 
         #def checkchunk():
         #    df = self.opener(self.datafile)
         #    df.seek(start)
         #    return df.read(length)
         #assert s == checkchunk()
         return decompress(self.chunkcache[1][offset:offset + length])
 
     def delta(self, node):
         """return or calculate a delta between a node and its predecessor"""
         r = self.rev(node)
         return self.revdiff(r - 1, r)
 
     def revdiff(self, rev1, rev2):
         """return or calculate a delta between two revisions"""
         b1 = self.base(rev1)
         b2 = self.base(rev2)
         if b1 == b2 and rev1 + 1 == rev2:
             return self.chunk(rev2)
         else:
             return self.diff(self.revision(self.node(rev1)),
                              self.revision(self.node(rev2)))
 
     def revision(self, node):
         """return an uncompressed revision of a given"""
         if node == nullid: return ""
         if self.cache and self.cache[0] == node: return self.cache[2]
 
         # look up what we need to read
         text = None
         rev = self.rev(node)
         base = self.base(rev)
 
         if self.inlinedata():
             # we probably have the whole chunk cached
             df = None
         else:
             df = self.opener(self.datafile)
 
         # do we have useful data cached?
         if self.cache and self.cache[1] >= base and self.cache[1] < rev:
             base = self.cache[1]
             text = self.cache[2]
             self.loadindex(base, rev + 1)
         else:
             self.loadindex(base, rev + 1)
             text = self.chunk(base, df=df)
 
         bins = []
         for r in xrange(base + 1, rev + 1):
             bins.append(self.chunk(r, df=df))
 
         text = self.patches(text, bins)
 
         p1, p2 = self.parents(node)
         if node != hash(text, p1, p2):
             raise RevlogError(_("integrity check failed on %s:%d")
                               % (self.datafile, rev))
 
         self.cache = (node, rev, text)
         return text
 
     def checkinlinesize(self, tr, fp=None):
         if not self.inlinedata():
             return
         if not fp:
             fp = self.opener(self.indexfile, 'r')
             fp.seek(0, 2)
         size = fp.tell()
         if size < 131072:
             return
         trinfo = tr.find(self.indexfile)
         if trinfo == None:
             raise RevlogError(_("%s not found in the transaction")
                               % self.indexfile)
 
         trindex = trinfo[2]
         dataoff = self.start(trindex)
 
         tr.add(self.datafile, dataoff)
         df = self.opener(self.datafile, 'w')
         calc = struct.calcsize(self.indexformat)
         for r in xrange(self.count()):
             start = self.start(r) + (r + 1) * calc
             length = self.length(r)
             fp.seek(start)
             d = fp.read(length)
             df.write(d)
         fp.close()
         df.close()
         fp = self.opener(self.indexfile, 'w', atomictemp=True)
         self.version &= ~(REVLOGNGINLINEDATA)
         if self.count():
             x = self.index[0]
             e = struct.pack(self.indexformat, *x)[4:]
             l = struct.pack(versionformat, self.version)
             fp.write(l)
             fp.write(e)
 
         for i in xrange(1, self.count()):
             x = self.index[i]
             e = struct.pack(self.indexformat, *x)
             fp.write(e)
 
         # if we don't call rename, the temp file will never replace the
         # real index
         fp.rename()
 
         tr.replace(self.indexfile, trindex * calc)
         self.chunkcache = None
 
     def addrevision(self, text, transaction, link, p1=None, p2=None, d=None):
         """add a revision to the log
 
         text - the revision data to add
         transaction - the transaction object used for rollback
         link - the linkrev data to add
         p1, p2 - the parent nodeids of the revision
         d - an optional precomputed delta
         """
         if not self.inlinedata():
             dfh = self.opener(self.datafile, "a")
         else:
             dfh = None
         ifh = self.opener(self.indexfile, "a+")
         return self._addrevision(text, transaction, link, p1, p2, d, ifh, dfh)
 
     def _addrevision(self, text, transaction, link, p1, p2, d, ifh, dfh):
         if text is None: text = ""
         if p1 is None: p1 = self.tip()
         if p2 is None: p2 = nullid
 
         node = hash(text, p1, p2)
 
         if node in self.nodemap:
             return node
 
         n = self.count()
         t = n - 1
 
         if n:
             base = self.base(t)
             start = self.start(base)
             end = self.end(t)
             if not d:
                 prev = self.revision(self.tip())
                 d = self.diff(prev, text)
             data = compress(d)
             l = len(data[1]) + len(data[0])
             dist = end - start + l
 
         # full versions are inserted when the needed deltas
         # become comparable to the uncompressed text
         if not n or dist > len(text) * 2:
             data = compress(text)
             l = len(data[1]) + len(data[0])
             base = n
         else:
             base = self.base(t)
 
         offset = 0
         if t >= 0:
             offset = self.end(t)
 
         if self.version == REVLOGV0:
             e = (offset, l, base, link, p1, p2, node)
         else:
             e = (self.offset_type(offset, 0), l, len(text),
                  base, link, self.rev(p1), self.rev(p2), node)
 
         self.index.append(e)
         self.nodemap[node] = n
         entry = struct.pack(self.indexformat, *e)
 
         if not self.inlinedata():
             transaction.add(self.datafile, offset)
             transaction.add(self.indexfile, n * len(entry))
             if data[0]:
                 dfh.write(data[0])
             dfh.write(data[1])
             dfh.flush()
         else:
             ifh.seek(0, 2)
             transaction.add(self.indexfile, ifh.tell(), self.count() - 1)
 
         if len(self.index) == 1 and self.version != REVLOGV0:
             l = struct.pack(versionformat, self.version)
             ifh.write(l)
             entry = entry[4:]
 
         ifh.write(entry)
 
         if self.inlinedata():
             ifh.write(data[0])
             ifh.write(data[1])
             self.checkinlinesize(transaction, ifh)
 
         self.cache = (node, n, text)
         return node
 
     def ancestor(self, a, b):
         """calculate the least common ancestor of nodes a and b"""
 
         def parents(rev):
             return [p for p in self.parentrevs(rev) if p != nullrev]
 
         c = ancestor.ancestor(self.rev(a), self.rev(b), parents)
         if c is None:
             return nullid
 
         return self.node(c)
 
     def group(self, nodelist, lookup, infocollect=None):
         """calculate a delta group
 
         Given a list of changeset revs, return a set of deltas and
         metadata corresponding to nodes. the first delta is
         parent(nodes[0]) -> nodes[0] the receiver is guaranteed to
         have this parent as it has all history before these
         changesets. parent is parent[0]
         """
         revs = [self.rev(n) for n in nodelist]
 
         # if we don't have any revisions touched by these changesets, bail
         if not revs:
             yield changegroup.closechunk()
             return
 
         # add the parent of the first rev
         p = self.parents(self.node(revs[0]))[0]
         revs.insert(0, self.rev(p))
 
         # build deltas
         for d in xrange(0, len(revs) - 1):
             a, b = revs[d], revs[d + 1]
             nb = self.node(b)
 
             if infocollect is not None:
                 infocollect(nb)
 
             d = self.revdiff(a, b)
             p = self.parents(nb)
             meta = nb + p[0] + p[1] + lookup(nb)
             yield changegroup.genchunk("%s%s" % (meta, d))
 
         yield changegroup.closechunk()
 
     def addgroup(self, revs, linkmapper, transaction, unique=0):
         """
         add a delta group
 
         given a set of deltas, add them to the revision log. the
         first delta is against its parent, which should be in our
         log, the rest are against the previous delta.
         """
 
         #track the base of the current delta log
         r = self.count()
         t = r - 1
         node = None
 
         base = prev = nullrev
         start = end = textlen = 0
         if r:
             end = self.end(t)
 
         ifh = self.opener(self.indexfile, "a+")
         ifh.seek(0, 2)
         transaction.add(self.indexfile, ifh.tell(), self.count())
         if self.inlinedata():
             dfh = None
         else:
             transaction.add(self.datafile, end)
             dfh = self.opener(self.datafile, "a")
 
         # loop through our set of deltas
         chain = None
         for chunk in revs:
             node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80])
             link = linkmapper(cs)
             if node in self.nodemap:
                 # this can happen if two branches make the same change
                 # if unique:
                 #    raise RevlogError(_("already have %s") % hex(node[:4]))
                 chain = node
                 continue
             delta = chunk[80:]
 
             for p in (p1, p2):
                 if not p in self.nodemap:
                     raise LookupError(_("unknown parent %s") % short(p))
 
             if not chain:
                 # retrieve the parent revision of the delta chain
                 chain = p1
                 if not chain in self.nodemap:
                     raise LookupError(_("unknown base %s") % short(chain[:4]))
 
             # full versions are inserted when the needed deltas become
             # comparable to the uncompressed text or when the previous
             # version is not the one we have a delta against. We use
             # the size of the previous full rev as a proxy for the
             # current size.
 
             if chain == prev:
                 tempd = compress(delta)
                 cdelta = tempd[0] + tempd[1]
                 textlen = mdiff.patchedsize(textlen, delta)
 
             if chain != prev or (end - start + len(cdelta)) > textlen * 2:
                 # flush our writes here so we can read it in revision
                 if dfh:
                     dfh.flush()
                 ifh.flush()
                 text = self.revision(chain)
                 text = self.patches(text, [delta])
                 chk = self._addrevision(text, transaction, link, p1, p2, None,
                                         ifh, dfh)
                 if not dfh and not self.inlinedata():
                     # addrevision switched from inline to conventional
                     # reopen the index
                     dfh = self.opener(self.datafile, "a")
                     ifh = self.opener(self.indexfile, "a")
                 if chk != node:
                     raise RevlogError(_("consistency error adding group"))
                 textlen = len(text)
             else:
                 if self.version == REVLOGV0:
                     e = (end, len(cdelta), base, link, p1, p2, node)
                 else:
                     e = (self.offset_type(end, 0), len(cdelta), textlen, base,
                          link, self.rev(p1), self.rev(p2), node)
                 self.index.append(e)
                 self.nodemap[node] = r
                 if self.inlinedata():
                     ifh.write(struct.pack(self.indexformat, *e))
                     ifh.write(cdelta)
                     self.checkinlinesize(transaction, ifh)
                     if not self.inlinedata():
                         dfh = self.opener(self.datafile, "a")
                         ifh = self.opener(self.indexfile, "a")
                 else:
                     dfh.write(cdelta)
                     ifh.write(struct.pack(self.indexformat, *e))
 
             t, r, chain, prev = r, r + 1, node, node
             base = self.base(t)
             start = self.start(base)
             end = self.end(t)
 
         return node
 
     def strip(self, rev, minlink):
         if self.count() == 0 or rev >= self.count():
             return
 
         if isinstance(self.index, lazyindex):
             self.loadindexmap()
 
         # When stripping away a revision, we need to make sure it
         # does not actually belong to an older changeset.
         # The minlink parameter defines the oldest revision
         # we're allowed to strip away.
         while minlink > self.index[rev][-4]:
             rev += 1
             if rev >= self.count():
                 return
 
         # first truncate the files on disk
         end = self.start(rev)
         if not self.inlinedata():
             df = self.opener(self.datafile, "a")
             df.truncate(end)
             end = rev * struct.calcsize(self.indexformat)
         else:
             end += rev * struct.calcsize(self.indexformat)
 
         indexf = self.opener(self.indexfile, "a")
         indexf.truncate(end)
 
         # then reset internal state in memory to forget those revisions
         self.cache = None
         self.chunkcache = None
         for x in xrange(rev, self.count()):
             del self.nodemap[self.node(x)]
 
         del self.index[rev:]
 
     def checksize(self):
         expected = 0
         if self.count():
             expected = self.end(self.count() - 1)
 
         try:
             f = self.opener(self.datafile)
             f.seek(0, 2)
             actual = f.tell()
             dd = actual - expected
         except IOError, inst:
             if inst.errno != errno.ENOENT:
                 raise
             dd = 0
 
         try:
             f = self.opener(self.indexfile)
             f.seek(0, 2)
             actual = f.tell()
             s = struct.calcsize(self.indexformat)
             i = actual / s
             di = actual - (i * s)
             if self.inlinedata():
                 databytes = 0
                 for r in xrange(self.count()):
                     databytes += self.length(r)
                 dd = 0
                 di = actual - self.count() * s - databytes
         except IOError, inst:
             if inst.errno != errno.ENOENT:
                 raise
             di = 0
 
         return (dd, di)
 
 

mercurial/sshserver.py

@@ -1,204 +1,204
 # sshserver.py - ssh protocol server support for mercurial
 #
 # Copyright 2005 Matt Mackall <[e-mail]>
 # Copyright 2006 Vadim Gelfer <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from i18n import _
 from node import *
 import os, streamclone, sys, tempfile, util
 
 class sshserver(object):
     def __init__(self, ui, repo):
         self.ui = ui
         self.repo = repo
         self.lock = None
         self.fin = sys.stdin
         self.fout = sys.stdout
 
         sys.stdout = sys.stderr
 
         # Prevent insertion/deletion of CRs
         util.set_binary(self.fin)
         util.set_binary(self.fout)
 
     def getarg(self):
         argline = self.fin.readline()[:-1]
         arg, l = argline.split()
         val = self.fin.read(int(l))
         return arg, val
 
     def respond(self, v):
         self.fout.write("%d\n" % len(v))
         self.fout.write(v)
         self.fout.flush()
 
     def serve_forever(self):
         while self.serve_one(): pass
         sys.exit(0)
 
     def serve_one(self):
         cmd = self.fin.readline()[:-1]
         if cmd:
             impl = getattr(self, 'do_' + cmd, None)
             if impl: impl()
             else: self.respond("")
         return cmd != ''
 
     def do_lookup(self):
         arg, key = self.getarg()
         assert arg == 'key'
         try:
             r = hex(self.repo.lookup(key))
             success = 1
         except Exception,inst:
             r = str(inst)
             success = 0
         self.respond("%s %s\n" % (success, r))
 
     def do_heads(self):
         h = self.repo.heads()
         self.respond(" ".join(map(hex, h)) + "\n")
 
     def do_hello(self):
         '''the hello command returns a set of lines describing various
         interesting things about the server, in an RFC822-like format.
         Currently the only one defined is "capabilities", which
         consists of a line in the form:
 
         capabilities: space separated list of tokens
         '''
 
         caps = ['unbundle', 'lookup', 'changegroupsubset']
         if self.ui.configbool('server', 'uncompressed'):
-            caps.append('stream=%d' % self.repo.revlogversion)
+            caps.append('stream=%d' % self.repo.changelog.version)
         self.respond("capabilities: %s\n" % (' '.join(caps),))
 
     def do_lock(self):
         '''DEPRECATED - allowing remote client to lock repo is not safe'''
 
         self.lock = self.repo.lock()
         self.respond("")
 
     def do_unlock(self):
         '''DEPRECATED'''
 
         if self.lock:
             self.lock.release()
         self.lock = None
         self.respond("")
 
     def do_branches(self):
         arg, nodes = self.getarg()
         nodes = map(bin, nodes.split(" "))
         r = []
         for b in self.repo.branches(nodes):
             r.append(" ".join(map(hex, b)) + "\n")
         self.respond("".join(r))
 
     def do_between(self):
         arg, pairs = self.getarg()
         pairs = [map(bin, p.split("-")) for p in pairs.split(" ")]
         r = []
         for b in self.repo.between(pairs):
             r.append(" ".join(map(hex, b)) + "\n")
         self.respond("".join(r))
 
     def do_changegroup(self):
         nodes = []
         arg, roots = self.getarg()
         nodes = map(bin, roots.split(" "))
 
         cg = self.repo.changegroup(nodes, 'serve')
         while True:
             d = cg.read(4096)
             if not d:
                 break
             self.fout.write(d)
 
         self.fout.flush()
 
     def do_changegroupsubset(self):
         bases = []
         heads = []
         argmap = dict([self.getarg(), self.getarg()])
         bases = [bin(n) for n in argmap['bases'].split(' ')]
         heads = [bin(n) for n in argmap['heads'].split(' ')]
 
         cg = self.repo.changegroupsubset(bases, heads, 'serve')
         while True:
             d = cg.read(4096)
             if not d:
                 break
             self.fout.write(d)
 
         self.fout.flush()
 
     def do_addchangegroup(self):
         '''DEPRECATED'''
 
         if not self.lock:
             self.respond("not locked")
             return
 
         self.respond("")
         r = self.repo.addchangegroup(self.fin, 'serve', self.client_url())
         self.respond(str(r))
 
     def client_url(self):
         client = os.environ.get('SSH_CLIENT', '').split(' ', 1)[0]
         return 'remote:ssh:' + client
 
     def do_unbundle(self):
         their_heads = self.getarg()[1].split()
 
         def check_heads():
             heads = map(hex, self.repo.heads())
             return their_heads == [hex('force')] or their_heads == heads
 
         # fail early if possible
         if not check_heads():
             self.respond(_('unsynced changes'))
             return
 
         self.respond('')
 
         # write bundle data to temporary file because it can be big
 
         try:
             fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')
             fp = os.fdopen(fd, 'wb+')
 
             count = int(self.fin.readline())
             while count:
                 fp.write(self.fin.read(count))
                 count = int(self.fin.readline())
 
             was_locked = self.lock is not None
             if not was_locked:
                 self.lock = self.repo.lock()
             try:
                 if not check_heads():
                     # someone else committed/pushed/unbundled while we
                     # were transferring data
                     self.respond(_('unsynced changes'))
                     return
                 self.respond('')
 
                 # push can proceed
 
                 fp.seek(0)
                 r = self.repo.addchangegroup(fp, 'serve', self.client_url())
                 self.respond(str(r))
             finally:
                 if not was_locked:
                     self.lock.release()
                     self.lock = None
         finally:
             fp.close()
             os.unlink(tempname)
 
     def do_stream_out(self):
         streamclone.stream_out(self.repo, self.fout)

mercurial/statichttprepo.py

@@ -1,85 +1,84
 # statichttprepo.py - simple http repository class for mercurial
 #
 # This provides read-only repo access to repositories exported via static http
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from i18n import _
 import changelog, filelog, httprangereader
 import repo, localrepo, manifest, os, urllib, urllib2, util
 
 class rangereader(httprangereader.httprangereader):
     def read(self, size=None):
         try:
             return httprangereader.httprangereader.read(self, size)
         except urllib2.HTTPError, inst:
             raise IOError(None, inst)
         except urllib2.URLError, inst:
             raise IOError(None, inst.reason[1])
 
 def opener(base):
     """return a function that opens files over http"""
     p = base
     def o(path, mode="r"):
         f = "/".join((p, urllib.quote(path)))
         return rangereader(f)
     return o
 
 class statichttprepository(localrepo.localrepository):
     def __init__(self, ui, path):
         self._url = path
         self.ui = ui
-        self.revlogversion = 0
 
         self.path = (path + "/.hg")
         self.opener = opener(self.path)
         # find requirements
         try:
             requirements = self.opener("requires").read().splitlines()
         except IOError:
             requirements = []
         # check them
         for r in requirements:
             if r not in self.supported:
                 raise repo.RepoError(_("requirement '%s' not supported") % r)
 
         # setup store
         if "store" in requirements:
             self.encodefn = util.encodefilename
             self.decodefn = util.decodefilename
             self.spath = self.path + "/store"
         else:
             self.encodefn = lambda x: x
             self.decodefn = lambda x: x
             self.spath = self.path
         self.sopener = util.encodedopener(opener(self.spath), self.encodefn)
 
         self.manifest = manifest.manifest(self.sopener)
         self.changelog = changelog.changelog(self.sopener)
         self.tagscache = None
         self.nodetagscache = None
         self.encodepats = None
         self.decodepats = None
 
     def url(self):
         return 'static-' + self._url
 
     def dev(self):
         return -1
 
     def local(self):
         return False
 
 def instance(ui, path, create):
     if create:
         raise util.Abort(_('cannot create new static-http repository'))
     if path.startswith('old-http:'):
         ui.warn(_("old-http:// syntax is deprecated, "
                   "please use static-http:// instead\n"))
         path = path[4:]
     else:
         path = path[7:]
     return statichttprepository(ui, path)

mercurial/ui.py

@@ -1,456 +1,450
 # ui.py - user interface bits for mercurial
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from i18n import _
 import errno, getpass, os, re, socket, sys, tempfile
 import ConfigParser, traceback, util
 
 def dupconfig(orig):
     new = util.configparser(orig.defaults())
     updateconfig(orig, new)
     return new
 
 def updateconfig(source, dest, sections=None):
     if not sections:
         sections = source.sections()
     for section in sections:
         if not dest.has_section(section):
             dest.add_section(section)
         for name, value in source.items(section, raw=True):
             dest.set(section, name, value)
 
 class ui(object):
     def __init__(self, verbose=False, debug=False, quiet=False,
                  interactive=True, traceback=False, report_untrusted=True,
                  parentui=None):
         self.overlay = None
         self.buffers = []
         if parentui is None:
             # this is the parent of all ui children
             self.parentui = None
             self.readhooks = []
             self.quiet = quiet
             self.verbose = verbose
             self.debugflag = debug
             self.interactive = interactive
             self.traceback = traceback
             self.report_untrusted = report_untrusted
             self.trusted_users = {}
             self.trusted_groups = {}
             # if ucdata is not None, its keys must be a superset of cdata's
             self.cdata = util.configparser()
             self.ucdata = None
             # we always trust global config files
             self.check_trusted = False
             self.readconfig(util.rcpath())
             self.check_trusted = True
             self.updateopts(verbose, debug, quiet, interactive)
         else:
             # parentui may point to an ui object which is already a child
             self.parentui = parentui.parentui or parentui
             self.readhooks = self.parentui.readhooks[:]
             self.trusted_users = parentui.trusted_users.copy()
             self.trusted_groups = parentui.trusted_groups.copy()
             self.cdata = dupconfig(self.parentui.cdata)
             if self.parentui.ucdata:
                 self.ucdata = dupconfig(self.parentui.ucdata)
             if self.parentui.overlay:
                 self.overlay = dupconfig(self.parentui.overlay)
 
     def __getattr__(self, key):
         return getattr(self.parentui, key)
 
     def updateopts(self, verbose=False, debug=False, quiet=False,
                    interactive=True, traceback=False, config=[]):
         for section, name, value in config:
             self.setconfig(section, name, value)
 
         if quiet or verbose or debug:
             self.setconfig('ui', 'quiet', str(bool(quiet)))
             self.setconfig('ui', 'verbose', str(bool(verbose)))
             self.setconfig('ui', 'debug', str(bool(debug)))
 
         self.verbosity_constraints()
 
         if not interactive:
             self.setconfig('ui', 'interactive', 'False')
             self.interactive = False
 
         self.traceback = self.traceback or traceback
 
     def verbosity_constraints(self):
         self.quiet = self.configbool('ui', 'quiet')
         self.verbose = self.configbool('ui', 'verbose')
         self.debugflag = self.configbool('ui', 'debug')
 
         if self.debugflag:
             self.verbose = True
             self.quiet = False
         elif self.verbose and self.quiet:
             self.quiet = self.verbose = False
 
     def _is_trusted(self, fp, f, warn=True):
         if not self.check_trusted:
             return True
         st = util.fstat(fp)
         if util.isowner(fp, st):
             return True
         tusers = self.trusted_users
         tgroups = self.trusted_groups
         if not tusers:
             user = util.username()
             if user is not None:
                 self.trusted_users[user] = 1
                 self.fixconfig(section='trusted')
         if (tusers or tgroups) and '*' not in tusers and '*' not in tgroups:
             user = util.username(st.st_uid)
             group = util.groupname(st.st_gid)
             if user not in tusers and group not in tgroups:
                 if warn and self.report_untrusted:
                     self.warn(_('Not trusting file %s from untrusted '
                                 'user %s, group %s\n') % (f, user, group))
                 return False
         return True
 
     def readconfig(self, fn, root=None):
         if isinstance(fn, basestring):
             fn = [fn]
         for f in fn:
             try:
                 fp = open(f)
             except IOError:
                 continue
             cdata = self.cdata
             trusted = self._is_trusted(fp, f)
             if not trusted:
                 if self.ucdata is None:
                     self.ucdata = dupconfig(self.cdata)
                 cdata = self.ucdata
             elif self.ucdata is not None:
                 # use a separate configparser, so that we don't accidentally
                 # override ucdata settings later on.
                 cdata = util.configparser()
 
             try:
                 cdata.readfp(fp, f)
             except ConfigParser.ParsingError, inst:
                 msg = _("Failed to parse %s\n%s") % (f, inst)
                 if trusted:
                     raise util.Abort(msg)
                 self.warn(_("Ignored: %s\n") % msg)
 
             if trusted:
                 if cdata != self.cdata:
                     updateconfig(cdata, self.cdata)
                 if self.ucdata is not None:
                     updateconfig(cdata, self.ucdata)
         # override data from config files with data set with ui.setconfig
         if self.overlay:
             updateconfig(self.overlay, self.cdata)
         if root is None:
             root = os.path.expanduser('~')
         self.fixconfig(root=root)
         for hook in self.readhooks:
             hook(self)
 
     def addreadhook(self, hook):
         self.readhooks.append(hook)
 
     def readsections(self, filename, *sections):
         """Read filename and add only the specified sections to the config data
 
         The settings are added to the trusted config data.
         """
         if not sections:
             return
 
         cdata = util.configparser()
         try:
             cdata.read(filename)
         except ConfigParser.ParsingError, inst:
             raise util.Abort(_("failed to parse %s\n%s") % (filename,
                                                             inst))
 
         for section in sections:
             if not cdata.has_section(section):
                 cdata.add_section(section)
 
         updateconfig(cdata, self.cdata, sections)
         if self.ucdata:
             updateconfig(cdata, self.ucdata, sections)
 
     def fixconfig(self, section=None, name=None, value=None, root=None):
         # translate paths relative to root (or home) into absolute paths
         if section is None or section == 'paths':
             if root is None:
                 root = os.getcwd()
             items = section and [(name, value)] or []
             for cdata in self.cdata, self.ucdata, self.overlay:
                 if not cdata: continue
                 if not items and cdata.has_section('paths'):
                     pathsitems = cdata.items('paths')
                 else:
                     pathsitems = items
                 for n, path in pathsitems:
                     if path and "://" not in path and not os.path.isabs(path):
                         cdata.set("paths", n, os.path.join(root, path))
 
         # update quiet/verbose/debug and interactive status
         if section is None or section == 'ui':
             if name is None or name in ('quiet', 'verbose', 'debug'):
                 self.verbosity_constraints()
 
             if name is None or name == 'interactive':
                 self.interactive = self.configbool("ui", "interactive", True)
 
         # update trust information
         if (section is None or section == 'trusted') and self.trusted_users:
             for user in self.configlist('trusted', 'users'):
                 self.trusted_users[user] = 1
             for group in self.configlist('trusted', 'groups'):
                 self.trusted_groups[group] = 1
 
     def setconfig(self, section, name, value):
         if not self.overlay:
             self.overlay = util.configparser()
         for cdata in (self.overlay, self.cdata, self.ucdata):
             if not cdata: continue
             if not cdata.has_section(section):
                 cdata.add_section(section)
             cdata.set(section, name, value)
         self.fixconfig(section, name, value)
 
     def _get_cdata(self, untrusted):
         if untrusted and self.ucdata:
             return self.ucdata
         return self.cdata
 
     def _config(self, section, name, default, funcname, untrusted, abort):
         cdata = self._get_cdata(untrusted)
         if cdata.has_option(section, name):
             try:
                 func = getattr(cdata, funcname)
                 return func(section, name)
             except ConfigParser.InterpolationError, inst:
                 msg = _("Error in configuration section [%s] "
                         "parameter '%s':\n%s") % (section, name, inst)
                 if abort:
                     raise util.Abort(msg)
                 self.warn(_("Ignored: %s\n") % msg)
         return default
 
     def _configcommon(self, section, name, default, funcname, untrusted):
         value = self._config(section, name, default, funcname,
                              untrusted, abort=True)
         if self.debugflag and not untrusted and self.ucdata:
             uvalue = self._config(section, name, None, funcname,
                                   untrusted=True, abort=False)
             if uvalue is not None and uvalue != value:
                 self.warn(_("Ignoring untrusted configuration option "
                             "%s.%s = %s\n") % (section, name, uvalue))
         return value
 
     def config(self, section, name, default=None, untrusted=False):
         return self._configcommon(section, name, default, 'get', untrusted)
 
     def configbool(self, section, name, default=False, untrusted=False):
         return self._configcommon(section, name, default, 'getboolean',
                                   untrusted)
 
     def configlist(self, section, name, default=None, untrusted=False):
         """Return a list of comma/space separated strings"""
         result = self.config(section, name, untrusted=untrusted)
         if result is None:
             result = default or []
         if isinstance(result, basestring):
             result = result.replace(",", " ").split()
         return result
 
     def has_config(self, section, untrusted=False):
         '''tell whether section exists in config.'''
         cdata = self._get_cdata(untrusted)
         return cdata.has_section(section)
 
     def _configitems(self, section, untrusted, abort):
         items = {}
         cdata = self._get_cdata(untrusted)
         if cdata.has_section(section):
             try:
                 items.update(dict(cdata.items(section)))
             except ConfigParser.InterpolationError, inst:
                 msg = _("Error in configuration section [%s]:\n"
                         "%s") % (section, inst)
                 if abort:
                     raise util.Abort(msg)
                 self.warn(_("Ignored: %s\n") % msg)
         return items
 
     def configitems(self, section, untrusted=False):
         items = self._configitems(section, untrusted=untrusted, abort=True)
         if self.debugflag and not untrusted and self.ucdata:
             uitems = self._configitems(section, untrusted=True, abort=False)
             keys = uitems.keys()
             keys.sort()
             for k in keys:
                 if uitems[k] != items.get(k):
                     self.warn(_("Ignoring untrusted configuration option "
                                 "%s.%s = %s\n") % (section, k, uitems[k]))
         x = items.items()
         x.sort()
         return x
 
     def walkconfig(self, untrusted=False):
         cdata = self._get_cdata(untrusted)
         sections = cdata.sections()
         sections.sort()
         for section in sections:
             for name, value in self.configitems(section, untrusted):
                 yield section, name, str(value).replace('\n', '\\n')
 
     def extensions(self):
         result = self.configitems("extensions")
         for i, (key, value) in enumerate(result):
             if value:
                 result[i] = (key, os.path.expanduser(value))
         return result
 
     def hgignorefiles(self):
         result = []
         for key, value in self.configitems("ui"):
             if key == 'ignore' or key.startswith('ignore.'):
                 result.append(os.path.expanduser(value))
         return result
 
-    def configrevlog(self):
-        result = {}
-        for key, value in self.configitems("revlog"):
-            result[key.lower()] = value
-        return result
-
     def username(self):
         """Return default username to be used in commits.
 
         Searched in this order: $HGUSER, [ui] section of hgrcs, $EMAIL
         and stop searching if one of these is set.
         If not found, use ($LOGNAME or $USER or $LNAME or
         $USERNAME) +"@full.hostname".
         """
         user = os.environ.get("HGUSER")
         if user is None:
             user = self.config("ui", "username")
         if user is None:
             user = os.environ.get("EMAIL")
         if user is None:
             try:
                 user = '%s@%s' % (util.getuser(), socket.getfqdn())
                 self.warn(_("No username found, using '%s' instead\n") % user)
             except KeyError:
                 pass
         if not user:
             raise util.Abort(_("Please specify a username."))
         return user
 
     def shortuser(self, user):
         """Return a short representation of a user name or email address."""
         if not self.verbose: user = util.shortuser(user)
         return user
 
     def expandpath(self, loc, default=None):
         """Return repository location relative to cwd or from [paths]"""
         if "://" in loc or os.path.isdir(os.path.join(loc, '.hg')):
             return loc
 
         path = self.config("paths", loc)
         if not path and default is not None:
             path = self.config("paths", default)
         return path or loc
 
     def pushbuffer(self):
         self.buffers.append([])
 
     def popbuffer(self):
         return "".join(self.buffers.pop())
 
     def write(self, *args):
         if self.buffers:
             self.buffers[-1].extend([str(a) for a in args])
         else:
             for a in args:
                 sys.stdout.write(str(a))
 
     def write_err(self, *args):
         try:
             if not sys.stdout.closed: sys.stdout.flush()
             for a in args:
                 sys.stderr.write(str(a))
             # stderr may be buffered under win32 when redirected to files,
             # including stdout.
             if not sys.stderr.closed: sys.stderr.flush()
         except IOError, inst:
             if inst.errno != errno.EPIPE:
                 raise
 
     def flush(self):
         try: sys.stdout.flush()
         except: pass
         try: sys.stderr.flush()
         except: pass
 
     def readline(self):
         return sys.stdin.readline()[:-1]
     def prompt(self, msg, pat=None, default="y"):
         if not self.interactive: return default
         while 1:
             self.write(msg, " ")
             r = self.readline()
             if not pat or re.match(pat, r):
                 return r
             else:
                 self.write(_("unrecognized response\n"))
     def getpass(self, prompt=None, default=None):
         if not self.interactive: return default
         return getpass.getpass(prompt or _('password: '))
     def status(self, *msg):
         if not self.quiet: self.write(*msg)
     def warn(self, *msg):
         self.write_err(*msg)
     def note(self, *msg):
         if self.verbose: self.write(*msg)
     def debug(self, *msg):
         if self.debugflag: self.write(*msg)
     def edit(self, text, user):
         (fd, name) = tempfile.mkstemp(prefix="hg-editor-", suffix=".txt",
                                       text=True)
         try:
             f = os.fdopen(fd, "w")
             f.write(text)
             f.close()
 
             editor = (os.environ.get("HGEDITOR") or
                     self.config("ui", "editor") or
                     os.environ.get("EDITOR", "vi"))
 
             util.system("%s \"%s\"" % (editor, name),
                         environ={'HGUSER': user},
                         onerr=util.Abort, errprefix=_("edit failed"))
 
             f = open(name)
             t = f.read()
             f.close()
             t = re.sub("(?m)^HG:.*\n", "", t)
         finally:
             os.unlink(name)
 
         return t
 
     def print_exc(self):
         '''print exception traceback if traceback printing enabled.
         only to call in exception handler. returns true if traceback
         printed.'''
         if self.traceback:
             traceback.print_exc()
         return self.traceback

mercurial/verify.py

@@ -1,206 +1,206
 # verify.py - repository integrity checking for Mercurial
 #
 # Copyright 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from node import *
 from i18n import _
 import revlog, mdiff
 
 def verify(repo):
     filelinkrevs = {}
     filenodes = {}
     changesets = revisions = files = 0
     errors = [0]
     warnings = [0]
     neededmanifests = {}
 
     def err(msg):
         repo.ui.warn(msg + "\n")
         errors[0] += 1
 
     def warn(msg):
         repo.ui.warn(msg + "\n")
         warnings[0] += 1
 
     def checksize(obj, name):
         d = obj.checksize()
         if d[0]:
             err(_("%s data length off by %d bytes") % (name, d[0]))
         if d[1]:
             err(_("%s index contains %d extra bytes") % (name, d[1]))
 
     def checkversion(obj, name):
         if obj.version != revlog.REVLOGV0:
             if not revlogv1:
                 warn(_("warning: `%s' uses revlog format 1") % name)
         elif revlogv1:
             warn(_("warning: `%s' uses revlog format 0") % name)
 
-    revlogv1 = repo.revlogversion != revlog.REVLOGV0
-    if repo.ui.verbose or revlogv1 != repo.revlogv1:
+    revlogv1 = repo.changelog.version != revlog.REVLOGV0
+    if repo.ui.verbose or not revlogv1:
         repo.ui.status(_("repository uses revlog format %d\n") %
                        (revlogv1 and 1 or 0))
 
     seen = {}
     repo.ui.status(_("checking changesets\n"))
     checksize(repo.changelog, "changelog")
 
     for i in xrange(repo.changelog.count()):
         changesets += 1
         n = repo.changelog.node(i)
         l = repo.changelog.linkrev(n)
         if l != i:
             err(_("incorrect link (%d) for changeset revision %d") %(l, i))
         if n in seen:
             err(_("duplicate changeset at revision %d") % i)
         seen[n] = 1
 
         for p in repo.changelog.parents(n):
             if p not in repo.changelog.nodemap:
                 err(_("changeset %s has unknown parent %s") %
                              (short(n), short(p)))
         try:
             changes = repo.changelog.read(n)
         except KeyboardInterrupt:
             repo.ui.warn(_("interrupted"))
             raise
         except Exception, inst:
             err(_("unpacking changeset %s: %s") % (short(n), inst))
             continue
 
         neededmanifests[changes[0]] = n
 
         for f in changes[3]:
             filelinkrevs.setdefault(f, []).append(i)
 
     seen = {}
     repo.ui.status(_("checking manifests\n"))
     checkversion(repo.manifest, "manifest")
     checksize(repo.manifest, "manifest")
 
     for i in xrange(repo.manifest.count()):
         n = repo.manifest.node(i)
         l = repo.manifest.linkrev(n)
 
         if l < 0 or l >= repo.changelog.count():
             err(_("bad manifest link (%d) at revision %d") % (l, i))
 
         if n in neededmanifests:
             del neededmanifests[n]
 
         if n in seen:
             err(_("duplicate manifest at revision %d") % i)
 
         seen[n] = 1
 
         for p in repo.manifest.parents(n):
             if p not in repo.manifest.nodemap:
                 err(_("manifest %s has unknown parent %s") %
                     (short(n), short(p)))
 
         try:
             for f, fn in repo.manifest.readdelta(n).iteritems():
                 filenodes.setdefault(f, {})[fn] = 1
         except KeyboardInterrupt:
             repo.ui.warn(_("interrupted"))
             raise
         except Exception, inst:
             err(_("reading delta for manifest %s: %s") % (short(n), inst))
             continue
 
     repo.ui.status(_("crosschecking files in changesets and manifests\n"))
 
     for m, c in neededmanifests.items():
         err(_("Changeset %s refers to unknown manifest %s") %
             (short(m), short(c)))
     del neededmanifests
 
     for f in filenodes:
         if f not in filelinkrevs:
             err(_("file %s in manifest but not in changesets") % f)
 
     for f in filelinkrevs:
         if f not in filenodes:
             err(_("file %s in changeset but not in manifest") % f)
 
     repo.ui.status(_("checking files\n"))
     ff = filenodes.keys()
     ff.sort()
     for f in ff:
         if f == "/dev/null":
             continue
         files += 1
         if not f:
             err(_("file without name in manifest %s") % short(n))
             continue
         fl = repo.file(f)
         checkversion(fl, f)
         checksize(fl, f)
 
         nodes = {nullid: 1}
         seen = {}
         for i in xrange(fl.count()):
             revisions += 1
             n = fl.node(i)
 
             if n in seen:
                 err(_("%s: duplicate revision %d") % (f, i))
             if n not in filenodes[f]:
                 err(_("%s: %d:%s not in manifests") % (f, i, short(n)))
             else:
                 del filenodes[f][n]
 
             flr = fl.linkrev(n)
             if flr not in filelinkrevs.get(f, []):
                 err(_("%s:%s points to unexpected changeset %d")
                         % (f, short(n), flr))
             else:
                 filelinkrevs[f].remove(flr)
 
             # verify contents
             try:
                 t = fl.read(n)
             except KeyboardInterrupt:
                 repo.ui.warn(_("interrupted"))
                 raise
             except Exception, inst:
                 err(_("unpacking file %s %s: %s") % (f, short(n), inst))
 
             # verify parents
             (p1, p2) = fl.parents(n)
             if p1 not in nodes:
                 err(_("file %s:%s unknown parent 1 %s") %
                     (f, short(n), short(p1)))
             if p2 not in nodes:
                 err(_("file %s:%s unknown parent 2 %s") %
                         (f, short(n), short(p1)))
             nodes[n] = 1
 
             # check renames
             try:
                 rp = fl.renamed(n)
                 if rp:
                     fl2 = repo.file(rp[0])
                     rev = fl2.rev(rp[1])
             except KeyboardInterrupt:
                 repo.ui.warn(_("interrupted"))
                 raise
             except Exception, inst:
                 err(_("checking rename on file %s %s: %s") % (f, short(n), inst))
 
         # cross-check
         for node in filenodes[f]:
             err(_("node %s in manifests not in %s") % (hex(node), f))
 
     repo.ui.status(_("%d files, %d changesets, %d total revisions\n") %
                    (files, changesets, revisions))
 
     if warnings[0]:
         repo.ui.warn(_("%d warnings encountered!\n") % warnings[0])
     if errors[0]:
         repo.ui.warn(_("%d integrity errors encountered!\n") % errors[0])
         return 1