Merge with crew-stable

hgext/mq.py

@@ -1,2222 +1,2227 b''
 # queue.py - patch queues for mercurial
 #
 # Copyright 2005, 2006 Chris Mason <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 '''patch management and development
 
 This extension lets you work with a stack of patches in a Mercurial
 repository.  It manages two stacks of patches - all known patches, and
 applied patches (subset of known patches).
 
 Known patches are represented as patch files in the .hg/patches
 directory.  Applied patches are both patch files and changesets.
 
 Common tasks (use "hg help command" for more details):
 
 prepare repository to work with patches   qinit
 create new patch                          qnew
 import existing patch                     qimport
 
 print patch series                        qseries
 print applied patches                     qapplied
 print name of top applied patch           qtop
 
 add known patch to applied stack          qpush
 remove patch from applied stack           qpop
 refresh contents of top applied patch     qrefresh
 '''
 
 from mercurial.i18n import _
 from mercurial import commands, cmdutil, hg, patch, revlog, util, changegroup
 import os, sys, re, errno
 
 commands.norepo += " qclone qversion"
 
 # Patch names looks like unix-file names.
 # They must be joinable with queue directory and result in the patch path.
 normname = util.normpath
 
 class statusentry:
     def __init__(self, rev, name=None):
         if not name:
             fields = rev.split(':', 1)
             if len(fields) == 2:
                 self.rev, self.name = fields
             else:
                 self.rev, self.name = None, None
         else:
             self.rev, self.name = rev, name
 
     def __str__(self):
         return self.rev + ':' + self.name
 
 class queue:
     def __init__(self, ui, path, patchdir=None):
         self.basepath = path
         self.path = patchdir or os.path.join(path, "patches")
         self.opener = util.opener(self.path)
         self.ui = ui
         self.applied = []
         self.full_series = []
         self.applied_dirty = 0
         self.series_dirty = 0
         self.series_path = "series"
         self.status_path = "status"
         self.guards_path = "guards"
         self.active_guards = None
         self.guards_dirty = False
         self._diffopts = None
 
         if os.path.exists(self.join(self.series_path)):
             self.full_series = self.opener(self.series_path).read().splitlines()
         self.parse_series()
 
         if os.path.exists(self.join(self.status_path)):
             lines = self.opener(self.status_path).read().splitlines()
             self.applied = [statusentry(l) for l in lines]
 
     def diffopts(self):
         if self._diffopts is None:
             self._diffopts = patch.diffopts(self.ui)
         return self._diffopts
 
     def join(self, *p):
         return os.path.join(self.path, *p)
 
     def find_series(self, patch):
         pre = re.compile("(\s*)([^#]+)")
         index = 0
         for l in self.full_series:
             m = pre.match(l)
             if m:
                 s = m.group(2)
                 s = s.rstrip()
                 if s == patch:
                     return index
             index += 1
         return None
 
     guard_re = re.compile(r'\s?#([-+][^-+# \t\r\n\f][^# \t\r\n\f]*)')
 
     def parse_series(self):
         self.series = []
         self.series_guards = []
         for l in self.full_series:
             h = l.find('#')
             if h == -1:
                 patch = l
                 comment = ''
             elif h == 0:
                 continue
             else:
                 patch = l[:h]
                 comment = l[h:]
             patch = patch.strip()
             if patch:
                 if patch in self.series:
                     raise util.Abort(_('%s appears more than once in %s') %
                                      (patch, self.join(self.series_path)))
                 self.series.append(patch)
                 self.series_guards.append(self.guard_re.findall(comment))
 
     def check_guard(self, guard):
         bad_chars = '# \t\r\n\f'
         first = guard[0]
         for c in '-+':
             if first == c:
                 return (_('guard %r starts with invalid character: %r') %
                         (guard, c))
         for c in bad_chars:
             if c in guard:
                 return _('invalid character in guard %r: %r') % (guard, c)
 
     def set_active(self, guards):
         for guard in guards:
             bad = self.check_guard(guard)
             if bad:
                 raise util.Abort(bad)
         guards = dict.fromkeys(guards).keys()
         guards.sort()
         self.ui.debug('active guards: %s\n' % ' '.join(guards))
         self.active_guards = guards
         self.guards_dirty = True
 
     def active(self):
         if self.active_guards is None:
             self.active_guards = []
             try:
                 guards = self.opener(self.guards_path).read().split()
             except IOError, err:
                 if err.errno != errno.ENOENT: raise
                 guards = []
             for i, guard in enumerate(guards):
                 bad = self.check_guard(guard)
                 if bad:
                     self.ui.warn('%s:%d: %s\n' %
                                  (self.join(self.guards_path), i + 1, bad))
                 else:
                     self.active_guards.append(guard)
         return self.active_guards
 
     def set_guards(self, idx, guards):
         for g in guards:
             if len(g) < 2:
                 raise util.Abort(_('guard %r too short') % g)
             if g[0] not in '-+':
                 raise util.Abort(_('guard %r starts with invalid char') % g)
             bad = self.check_guard(g[1:])
             if bad:
                 raise util.Abort(bad)
         drop = self.guard_re.sub('', self.full_series[idx])
         self.full_series[idx] = drop + ''.join([' #' + g for g in guards])
         self.parse_series()
         self.series_dirty = True
 
     def pushable(self, idx):
         if isinstance(idx, str):
             idx = self.series.index(idx)
         patchguards = self.series_guards[idx]
         if not patchguards:
             return True, None
         default = False
         guards = self.active()
         exactneg = [g for g in patchguards if g[0] == '-' and g[1:] in guards]
         if exactneg:
             return False, exactneg[0]
         pos = [g for g in patchguards if g[0] == '+']
         exactpos = [g for g in pos if g[1:] in guards]
         if pos:
             if exactpos:
                 return True, exactpos[0]
             return False, pos
         return True, ''
 
     def explain_pushable(self, idx, all_patches=False):
         write = all_patches and self.ui.write or self.ui.warn
         if all_patches or self.ui.verbose:
             if isinstance(idx, str):
                 idx = self.series.index(idx)
             pushable, why = self.pushable(idx)
             if all_patches and pushable:
                 if why is None:
                     write(_('allowing %s - no guards in effect\n') %
                           self.series[idx])
                 else:
                     if not why:
                         write(_('allowing %s - no matching negative guards\n') %
                               self.series[idx])
                     else:
                         write(_('allowing %s - guarded by %r\n') %
                               (self.series[idx], why))
             if not pushable:
                 if why:
                     write(_('skipping %s - guarded by %r\n') %
                           (self.series[idx], why))
                 else:
                     write(_('skipping %s - no matching guards\n') %
                           self.series[idx])
 
     def save_dirty(self):
         def write_list(items, path):
             fp = self.opener(path, 'w')
             for i in items:
                 print >> fp, i
             fp.close()
         if self.applied_dirty: write_list(map(str, self.applied), self.status_path)
         if self.series_dirty: write_list(self.full_series, self.series_path)
         if self.guards_dirty: write_list(self.active_guards, self.guards_path)
 
     def readheaders(self, patch):
         def eatdiff(lines):
             while lines:
                 l = lines[-1]
                 if (l.startswith("diff -") or
                     l.startswith("Index:") or
                     l.startswith("===========")):
                     del lines[-1]
                 else:
                     break
         def eatempty(lines):
             while lines:
                 l = lines[-1]
                 if re.match('\s*$', l):
                     del lines[-1]
                 else:
                     break
 
         pf = self.join(patch)
         message = []
         comments = []
         user = None
         date = None
         format = None
         subject = None
         diffstart = 0
 
         for line in file(pf):
             line = line.rstrip()
             if line.startswith('diff --git'):
                 diffstart = 2
                 break
             if diffstart:
                 if line.startswith('+++ '):
                     diffstart = 2
                 break
             if line.startswith("--- "):
                 diffstart = 1
                 continue
             elif format == "hgpatch":
                 # parse values when importing the result of an hg export
                 if line.startswith("# User "):
                     user = line[7:]
                 elif line.startswith("# Date "):
                     date = line[7:]
                 elif not line.startswith("# ") and line:
                     message.append(line)
                     format = None
             elif line == '# HG changeset patch':
                 format = "hgpatch"
             elif (format != "tagdone" and (line.startswith("Subject: ") or
                                            line.startswith("subject: "))):
                 subject = line[9:]
                 format = "tag"
             elif (format != "tagdone" and (line.startswith("From: ") or
                                            line.startswith("from: "))):
                 user = line[6:]
                 format = "tag"
             elif format == "tag" and line == "":
                 # when looking for tags (subject: from: etc) they
                 # end once you find a blank line in the source
                 format = "tagdone"
             elif message or line:
                 message.append(line)
             comments.append(line)
 
         eatdiff(message)
         eatdiff(comments)
         eatempty(message)
         eatempty(comments)
 
         # make sure message isn't empty
         if format and format.startswith("tag") and subject:
             message.insert(0, "")
             message.insert(0, subject)
         return (message, comments, user, date, diffstart > 1)
 
     def printdiff(self, repo, node1, node2=None, files=None,
                   fp=None, changes=None, opts={}):
         fns, matchfn, anypats = cmdutil.matchpats(repo, files, opts)
 
         patch.diff(repo, node1, node2, fns, match=matchfn,
                    fp=fp, changes=changes, opts=self.diffopts())
 
     def mergeone(self, repo, mergeq, head, patch, rev, wlock):
         # first try just applying the patch
         (err, n) = self.apply(repo, [ patch ], update_status=False,
                               strict=True, merge=rev, wlock=wlock)
 
         if err == 0:
             return (err, n)
 
         if n is None:
             raise util.Abort(_("apply failed for patch %s") % patch)
 
         self.ui.warn("patch didn't work out, merging %s\n" % patch)
 
         # apply failed, strip away that rev and merge.
         hg.clean(repo, head, wlock=wlock)
         self.strip(repo, n, update=False, backup='strip', wlock=wlock)
 
         ctx = repo.changectx(rev)
         ret = hg.merge(repo, rev, wlock=wlock)
         if ret:
             raise util.Abort(_("update returned %d") % ret)
         n = repo.commit(None, ctx.description(), ctx.user(),
                         force=1, wlock=wlock)
         if n == None:
             raise util.Abort(_("repo commit failed"))
         try:
             message, comments, user, date, patchfound = mergeq.readheaders(patch)
         except:
             raise util.Abort(_("unable to read %s") % patch)
 
         patchf = self.opener(patch, "w")
         if comments:
             comments = "\n".join(comments) + '\n\n'
             patchf.write(comments)
         self.printdiff(repo, head, n, fp=patchf)
         patchf.close()
         return (0, n)
 
     def qparents(self, repo, rev=None):
         if rev is None:
             (p1, p2) = repo.dirstate.parents()
             if p2 == revlog.nullid:
                 return p1
             if len(self.applied) == 0:
                 return None
             return revlog.bin(self.applied[-1].rev)
         pp = repo.changelog.parents(rev)
         if pp[1] != revlog.nullid:
             arevs = [ x.rev for x in self.applied ]
             p0 = revlog.hex(pp[0])
             p1 = revlog.hex(pp[1])
             if p0 in arevs:
                 return pp[0]
             if p1 in arevs:
                 return pp[1]
         return pp[0]
 
     def mergepatch(self, repo, mergeq, series, wlock):
         if len(self.applied) == 0:
             # each of the patches merged in will have two parents.  This
             # can confuse the qrefresh, qdiff, and strip code because it
             # needs to know which parent is actually in the patch queue.
             # so, we insert a merge marker with only one parent.  This way
             # the first patch in the queue is never a merge patch
             #
             pname = ".hg.patches.merge.marker"
             n = repo.commit(None, '[mq]: merge marker', user=None, force=1,
                             wlock=wlock)
             self.applied.append(statusentry(revlog.hex(n), pname))
             self.applied_dirty = 1
 
         head = self.qparents(repo)
 
         for patch in series:
             patch = mergeq.lookup(patch, strict=True)
             if not patch:
                 self.ui.warn("patch %s does not exist\n" % patch)
                 return (1, None)
             pushable, reason = self.pushable(patch)
             if not pushable:
                 self.explain_pushable(patch, all_patches=True)
                 continue
             info = mergeq.isapplied(patch)
             if not info:
                 self.ui.warn("patch %s is not applied\n" % patch)
                 return (1, None)
             rev = revlog.bin(info[1])
             (err, head) = self.mergeone(repo, mergeq, head, patch, rev, wlock)
             if head:
                 self.applied.append(statusentry(revlog.hex(head), patch))
                 self.applied_dirty = 1
             if err:
                 return (err, head)
         return (0, head)
 
     def patch(self, repo, patchfile):
         '''Apply patchfile  to the working directory.
         patchfile: file name of patch'''
         files = {}
         try:
             fuzz = patch.patch(patchfile, self.ui, strip=1, cwd=repo.root,
                                files=files)
         except Exception, inst:
             self.ui.note(str(inst) + '\n')
             if not self.ui.verbose:
                 self.ui.warn("patch failed, unable to continue (try -v)\n")
             return (False, files, False)
 
         return (True, files, fuzz)
 
     def apply(self, repo, series, list=False, update_status=True,
               strict=False, patchdir=None, merge=None, wlock=None):
         # TODO unify with commands.py
         if not patchdir:
             patchdir = self.path
         err = 0
         if not wlock:
             wlock = repo.wlock()
         lock = repo.lock()
         tr = repo.transaction()
         n = None
         for patchname in series:
             pushable, reason = self.pushable(patchname)
             if not pushable:
                 self.explain_pushable(patchname, all_patches=True)
                 continue
             self.ui.warn("applying %s\n" % patchname)
             pf = os.path.join(patchdir, patchname)
 
             try:
                 message, comments, user, date, patchfound = self.readheaders(patchname)
             except:
                 self.ui.warn("Unable to read %s\n" % patchname)
                 err = 1
                 break
 
             if not message:
                 message = "imported patch %s\n" % patchname
             else:
                 if list:
                     message.append("\nimported patch %s" % patchname)
                 message = '\n'.join(message)
 
             (patcherr, files, fuzz) = self.patch(repo, pf)
             patcherr = not patcherr
 
             if merge and files:
                 # Mark as merged and update dirstate parent info
                 repo.dirstate.update(repo.dirstate.filterfiles(files.keys()), 'm')
                 p1, p2 = repo.dirstate.parents()
                 repo.dirstate.setparents(p1, merge)
             files = patch.updatedir(self.ui, repo, files, wlock=wlock)
             n = repo.commit(files, message, user, date, force=1, lock=lock,
                             wlock=wlock)
 
             if n == None:
                 raise util.Abort(_("repo commit failed"))
 
             if update_status:
                 self.applied.append(statusentry(revlog.hex(n), patchname))
 
             if patcherr:
                 if not patchfound:
                     self.ui.warn("patch %s is empty\n" % patchname)
                     err = 0
                 else:
                     self.ui.warn("patch failed, rejects left in working dir\n")
                     err = 1
                 break
 
             if fuzz and strict:
                 self.ui.warn("fuzz found when applying patch, stopping\n")
                 err = 1
                 break
         tr.close()
         return (err, n)
 
     def delete(self, repo, patches, opts):
         realpatches = []
         for patch in patches:
             patch = self.lookup(patch, strict=True)
             info = self.isapplied(patch)
             if info:
                 raise util.Abort(_("cannot delete applied patch %s") % patch)
             if patch not in self.series:
                 raise util.Abort(_("patch %s not in series file") % patch)
             realpatches.append(patch)
 
         appliedbase = 0
         if opts.get('rev'):
             if not self.applied:
                 raise util.Abort(_('no patches applied'))
             revs = cmdutil.revrange(repo, opts['rev'])
             if len(revs) > 1 and revs[0] > revs[1]:
                 revs.reverse()
             for rev in revs:
                 if appliedbase >= len(self.applied):
                     raise util.Abort(_("revision %d is not managed") % rev)
 
                 base = revlog.bin(self.applied[appliedbase].rev)
                 node = repo.changelog.node(rev)
                 if node != base:
                     raise util.Abort(_("cannot delete revision %d above "
                                        "applied patches") % rev)
                 realpatches.append(self.applied[appliedbase].name)
                 appliedbase += 1
 
         if not opts.get('keep'):
             r = self.qrepo()
             if r:
                 r.remove(realpatches, True)
             else:
                 for p in realpatches:
                     os.unlink(self.join(p))
 
         if appliedbase:
             del self.applied[:appliedbase]
             self.applied_dirty = 1
         indices = [self.find_series(p) for p in realpatches]
         indices.sort()
         for i in indices[-1::-1]:
             del self.full_series[i]
         self.parse_series()
         self.series_dirty = 1
 
     def check_toppatch(self, repo):
         if len(self.applied) > 0:
             top = revlog.bin(self.applied[-1].rev)
             pp = repo.dirstate.parents()
             if top not in pp:
                 raise util.Abort(_("queue top not at same revision as working directory"))
             return top
         return None
     def check_localchanges(self, repo, force=False, refresh=True):
         m, a, r, d = repo.status()[:4]
         if m or a or r or d:
             if not force:
                 if refresh:
                     raise util.Abort(_("local changes found, refresh first"))
                 else:
                     raise util.Abort(_("local changes found"))
         return m, a, r, d
     def new(self, repo, patch, msg=None, force=None):
         if os.path.exists(self.join(patch)):
             raise util.Abort(_('patch "%s" already exists') % patch)
         m, a, r, d = self.check_localchanges(repo, force)
         commitfiles = m + a + r
         self.check_toppatch(repo)
         wlock = repo.wlock()
         insert = self.full_series_end()
         if msg:
             n = repo.commit(commitfiles, "[mq]: %s" % msg, force=True,
                             wlock=wlock)
         else:
             n = repo.commit(commitfiles,
                             "New patch: %s" % patch, force=True, wlock=wlock)
         if n == None:
             raise util.Abort(_("repo commit failed"))
         self.full_series[insert:insert] = [patch]
         self.applied.append(statusentry(revlog.hex(n), patch))
         self.parse_series()
         self.series_dirty = 1
         self.applied_dirty = 1
         p = self.opener(patch, "w")
         if msg:
             msg = msg + "\n"
             p.write(msg)
         p.close()
         wlock = None
         r = self.qrepo()
         if r: r.add([patch])
         if commitfiles:
             self.refresh(repo, short=True)
 
     def strip(self, repo, rev, update=True, backup="all", wlock=None):
         def limitheads(chlog, stop):
             """return the list of all nodes that have no children"""
             p = {}
             h = []
             stoprev = 0
             if stop in chlog.nodemap:
                 stoprev = chlog.rev(stop)
 
             for r in xrange(chlog.count() - 1, -1, -1):
                 n = chlog.node(r)
                 if n not in p:
                     h.append(n)
                 if n == stop:
                     break
                 if r < stoprev:
                     break
                 for pn in chlog.parents(n):
                     p[pn] = 1
             return h
 
         def bundle(cg):
             backupdir = repo.join("strip-backup")
             if not os.path.isdir(backupdir):
                 os.mkdir(backupdir)
             name = os.path.join(backupdir, "%s" % revlog.short(rev))
             name = savename(name)
             self.ui.warn("saving bundle to %s\n" % name)
             return changegroup.writebundle(cg, name, "HG10BZ")
 
         def stripall(revnum):
             mm = repo.changectx(rev).manifest()
             seen = {}
 
             for x in xrange(revnum, repo.changelog.count()):
                 for f in repo.changectx(x).files():
                     if f in seen:
                         continue
                     seen[f] = 1
                     if f in mm:
                         filerev = mm[f]
                     else:
                         filerev = 0
                     seen[f] = filerev
             # we go in two steps here so the strip loop happens in a
             # sensible order.  When stripping many files, this helps keep
             # our disk access patterns under control.
             seen_list = seen.keys()
             seen_list.sort()
             for f in seen_list:
                 ff = repo.file(f)
                 filerev = seen[f]
                 if filerev != 0:
                     if filerev in ff.nodemap:
                         filerev = ff.rev(filerev)
                     else:
                         filerev = 0
                 ff.strip(filerev, revnum)
 
         if not wlock:
             wlock = repo.wlock()
         lock = repo.lock()
         chlog = repo.changelog
         # TODO delete the undo files, and handle undo of merge sets
         pp = chlog.parents(rev)
         revnum = chlog.rev(rev)
 
         if update:
             self.check_localchanges(repo, refresh=False)
             urev = self.qparents(repo, rev)
             hg.clean(repo, urev, wlock=wlock)
             repo.dirstate.write()
 
         # save is a list of all the branches we are truncating away
         # that we actually want to keep.  changegroup will be used
         # to preserve them and add them back after the truncate
         saveheads = []
         savebases = {}
 
         heads = limitheads(chlog, rev)
         seen = {}
 
         # search through all the heads, finding those where the revision
         # we want to strip away is an ancestor.  Also look for merges
         # that might be turned into new heads by the strip.
         while heads:
             h = heads.pop()
             n = h
             while True:
                 seen[n] = 1
                 pp = chlog.parents(n)
                 if pp[1] != revlog.nullid:
                     for p in pp:
                         if chlog.rev(p) > revnum and p not in seen:
                             heads.append(p)
                 if pp[0] == revlog.nullid:
                     break
                 if chlog.rev(pp[0]) < revnum:
                     break
                 n = pp[0]
                 if n == rev:
                     break
             r = chlog.reachable(h, rev)
             if rev not in r:
                 saveheads.append(h)
                 for x in r:
                     if chlog.rev(x) > revnum:
                         savebases[x] = 1
 
         # create a changegroup for all the branches we need to keep
         if backup == "all":
             backupch = repo.changegroupsubset([rev], chlog.heads(), 'strip')
             bundle(backupch)
         if saveheads:
             backupch = repo.changegroupsubset(savebases.keys(), saveheads, 'strip')
             chgrpfile = bundle(backupch)
 
         stripall(revnum)
 
         change = chlog.read(rev)
         chlog.strip(revnum, revnum)
         repo.manifest.strip(repo.manifest.rev(change[0]), revnum)
         if saveheads:
             self.ui.status("adding branch\n")
             commands.unbundle(self.ui, repo, "file:%s" % chgrpfile,
                               update=False)
             if backup != "strip":
                 os.unlink(chgrpfile)
 
     def isapplied(self, patch):
         """returns (index, rev, patch)"""
         for i in xrange(len(self.applied)):
             a = self.applied[i]
             if a.name == patch:
                 return (i, a.rev, a.name)
         return None
 
     # if the exact patch name does not exist, we try a few
     # variations.  If strict is passed, we try only #1
     #
     # 1) a number to indicate an offset in the series file
     # 2) a unique substring of the patch name was given
     # 3) patchname[-+]num to indicate an offset in the series file
     def lookup(self, patch, strict=False):
         patch = patch and str(patch)
 
         def partial_name(s):
             if s in self.series:
                 return s
             matches = [x for x in self.series if s in x]
             if len(matches) > 1:
                 self.ui.warn(_('patch name "%s" is ambiguous:\n') % s)
                 for m in matches:
                     self.ui.warn('  %s\n' % m)
                 return None
             if matches:
                 return matches[0]
             if len(self.series) > 0 and len(self.applied) > 0:
                 if s == 'qtip':
                     return self.series[self.series_end(True)-1]
                 if s == 'qbase':
                     return self.series[0]
             return None
         if patch == None:
             return None
 
         # we don't want to return a partial match until we make
         # sure the file name passed in does not exist (checked below)
         res = partial_name(patch)
         if res and res == patch:
             return res
 
         if not os.path.isfile(self.join(patch)):
             try:
                 sno = int(patch)
             except(ValueError, OverflowError):
                 pass
             else:
                 if sno < len(self.series):
                     return self.series[sno]
             if not strict:
                 # return any partial match made above
                 if res:
                     return res
                 minus = patch.rfind('-')
                 if minus >= 0:
                     res = partial_name(patch[:minus])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(patch[minus+1:] or 1)
                         except(ValueError, OverflowError):
                             pass
                         else:
                             if i - off >= 0:
                                 return self.series[i - off]
                 plus = patch.rfind('+')
                 if plus >= 0:
                     res = partial_name(patch[:plus])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(patch[plus+1:] or 1)
                         except(ValueError, OverflowError):
                             pass
                         else:
                             if i + off < len(self.series):
                                 return self.series[i + off]
         raise util.Abort(_("patch %s not in series") % patch)
 
     def push(self, repo, patch=None, force=False, list=False,
              mergeq=None, wlock=None):
         if not wlock:
             wlock = repo.wlock()
         patch = self.lookup(patch)
         # Suppose our series file is: A B C and the current 'top' patch is B.
         # qpush C should be performed (moving forward)
         # qpush B is a NOP (no change)
         # qpush A is an error (can't go backwards with qpush)
         if patch:
             info = self.isapplied(patch)
             if info:
                 if info[0] < len(self.applied) - 1:
                     raise util.Abort(_("cannot push to a previous patch: %s") %
                                      patch)
                 if info[0] < len(self.series) - 1:
                     self.ui.warn(_('qpush: %s is already at the top\n') % patch)
                 else:
                     self.ui.warn(_('all patches are currently applied\n'))
                 return
 
         # Following the above example, starting at 'top' of B:
         #  qpush should be performed (pushes C), but a subsequent qpush without
         #  an argument is an error (nothing to apply). This allows a loop
         #  of "...while hg qpush..." to work as it detects an error when done
         if self.series_end() == len(self.series):
             self.ui.warn(_('patch series already fully applied\n'))
             return 1
         if not force:
             self.check_localchanges(repo)
 
         self.applied_dirty = 1;
         start = self.series_end()
         if start > 0:
             self.check_toppatch(repo)
         if not patch:
             patch = self.series[start]
             end = start + 1
         else:
             end = self.series.index(patch, start) + 1
         s = self.series[start:end]
         if mergeq:
             ret = self.mergepatch(repo, mergeq, s, wlock)
         else:
             ret = self.apply(repo, s, list, wlock=wlock)
         top = self.applied[-1].name
         if ret[0]:
             self.ui.write("Errors during apply, please fix and refresh %s\n" %
                           top)
         else:
             self.ui.write("Now at: %s\n" % top)
         return ret[0]
 
     def pop(self, repo, patch=None, force=False, update=True, all=False,
             wlock=None):
         def getfile(f, rev):
             t = repo.file(f).read(rev)
             repo.wfile(f, "w").write(t)
 
         if not wlock:
             wlock = repo.wlock()
         if patch:
             # index, rev, patch
             info = self.isapplied(patch)
             if not info:
                 patch = self.lookup(patch)
             info = self.isapplied(patch)
             if not info:
                 raise util.Abort(_("patch %s is not applied") % patch)
 
         if len(self.applied) == 0:
             # Allow qpop -a to work repeatedly,
             # but not qpop without an argument
             self.ui.warn(_("no patches applied\n"))
             return not all
 
         if not update:
             parents = repo.dirstate.parents()
             rr = [ revlog.bin(x.rev) for x in self.applied ]
             for p in parents:
                 if p in rr:
                     self.ui.warn("qpop: forcing dirstate update\n")
                     update = True
 
         if not force and update:
             self.check_localchanges(repo)
 
         self.applied_dirty = 1;
         end = len(self.applied)
         if not patch:
             if all:
                 popi = 0
             else:
                 popi = len(self.applied) - 1
         else:
             popi = info[0] + 1
             if popi >= end:
                 self.ui.warn("qpop: %s is already at the top\n" % patch)
                 return
         info = [ popi ] + [self.applied[popi].rev, self.applied[popi].name]
 
         start = info[0]
         rev = revlog.bin(info[1])
 
         # we know there are no local changes, so we can make a simplified
         # form of hg.update.
         if update:
             top = self.check_toppatch(repo)
             qp = self.qparents(repo, rev)
             changes = repo.changelog.read(qp)
             mmap = repo.manifest.read(changes[0])
             m, a, r, d, u = repo.status(qp, top)[:5]
             if d:
                 raise util.Abort("deletions found between repo revs")
             for f in m:
                 getfile(f, mmap[f])
             for f in r:
                 getfile(f, mmap[f])
                 util.set_exec(repo.wjoin(f), mmap.execf(f))
             repo.dirstate.update(m + r, 'n')
             for f in a:
                 try:
                     os.unlink(repo.wjoin(f))
                 except OSError, e:
                     if e.errno != errno.ENOENT:
                         raise
                 try: os.removedirs(os.path.dirname(repo.wjoin(f)))
                 except: pass
             if a:
                 repo.dirstate.forget(a)
             repo.dirstate.setparents(qp, revlog.nullid)
         self.strip(repo, rev, update=False, backup='strip', wlock=wlock)
         del self.applied[start:end]
         if len(self.applied):
             self.ui.write("Now at: %s\n" % self.applied[-1].name)
         else:
             self.ui.write("Patch queue now empty\n")
 
     def diff(self, repo, pats, opts):
         top = self.check_toppatch(repo)
         if not top:
             self.ui.write("No patches applied\n")
             return
         qp = self.qparents(repo, top)
         if opts.get('git'):
             self.diffopts().git = True
         self.printdiff(repo, qp, files=pats, opts=opts)
 
     def refresh(self, repo, pats=None, **opts):
         if len(self.applied) == 0:
             self.ui.write("No patches applied\n")
             return 1
         wlock = repo.wlock()
         self.check_toppatch(repo)
         (top, patchfn) = (self.applied[-1].rev, self.applied[-1].name)
         top = revlog.bin(top)
         cparents = repo.changelog.parents(top)
         patchparent = self.qparents(repo, top)
         message, comments, user, date, patchfound = self.readheaders(patchfn)
 
         patchf = self.opener(patchfn, "w")
         msg = opts.get('msg', '').rstrip()
         if msg:
             if comments:
                 # Remove existing message.
                 ci = 0
                 for mi in xrange(len(message)):
                     while message[mi] != comments[ci]:
                         ci += 1
                     del comments[ci]
             comments.append(msg)
         if comments:
             comments = "\n".join(comments) + '\n\n'
             patchf.write(comments)
 
         if opts.get('git'):
             self.diffopts().git = True
         fns, matchfn, anypats = cmdutil.matchpats(repo, pats, opts)
         tip = repo.changelog.tip()
         if top == tip:
             # if the top of our patch queue is also the tip, there is an
             # optimization here.  We update the dirstate in place and strip
             # off the tip commit.  Then just commit the current directory
             # tree.  We can also send repo.commit the list of files
             # changed to speed up the diff
             #
             # in short mode, we only diff the files included in the
             # patch already
             #
             # this should really read:
             #   mm, dd, aa, aa2, uu = repo.status(tip, patchparent)[:5]
             # but we do it backwards to take advantage of manifest/chlog
             # caching against the next repo.status call
             #
             mm, aa, dd, aa2, uu = repo.status(patchparent, tip)[:5]
             changes = repo.changelog.read(tip)
             man = repo.manifest.read(changes[0])
             aaa = aa[:]
             if opts.get('short'):
                 filelist = mm + aa + dd
             else:
                 filelist = None
             m, a, r, d, u = repo.status(files=filelist)[:5]
 
             # we might end up with files that were added between tip and
             # the dirstate parent, but then changed in the local dirstate.
             # in this case, we want them to only show up in the added section
             for x in m:
                 if x not in aa:
                     mm.append(x)
             # we might end up with files added by the local dirstate that
             # were deleted by the patch.  In this case, they should only
             # show up in the changed section.
             for x in a:
                 if x in dd:
                     del dd[dd.index(x)]
                     mm.append(x)
                 else:
                     aa.append(x)
             # make sure any files deleted in the local dirstate
             # are not in the add or change column of the patch
             forget = []
             for x in d + r:
                 if x in aa:
                     del aa[aa.index(x)]
                     forget.append(x)
                     continue
                 elif x in mm:
                     del mm[mm.index(x)]
                 dd.append(x)
 
             m = util.unique(mm)
             r = util.unique(dd)
             a = util.unique(aa)
-            filelist = filter(matchfn, util.unique(m + r + a))
+            c = [filter(matchfn, l) for l in (m, a, r, [], u)]
+            filelist = util.unique(c[0] + c[1] + c[2])
             patch.diff(repo, patchparent, files=filelist, match=matchfn,
-                       fp=patchf, changes=(m, a, r, [], u),
-                       opts=self.diffopts())
+                       fp=patchf, changes=c, opts=self.diffopts())
             patchf.close()
 
             repo.dirstate.setparents(*cparents)
             copies = {}
             for dst in a:
                 src = repo.dirstate.copied(dst)
                 if src is None:
                     continue
                 copies.setdefault(src, []).append(dst)
             repo.dirstate.update(a, 'a')
             # remember the copies between patchparent and tip
             # this may be slow, so don't do it if we're not tracking copies
             if self.diffopts().git:
                 for dst in aaa:
                     f = repo.file(dst)
                     src = f.renamed(man[dst])
                     if src:
                         copies[src[0]] = copies.get(dst, [])
                         if dst in a:
                             copies[src[0]].append(dst)
                     # we can't copy a file created by the patch itself
                     if dst in copies:
                         del copies[dst]
             for src, dsts in copies.iteritems():
                 for dst in dsts:
                     repo.dirstate.copy(src, dst)
             repo.dirstate.update(r, 'r')
             # if the patch excludes a modified file, mark that file with mtime=0
             # so status can see it.
             mm = []
             for i in xrange(len(m)-1, -1, -1):
                 if not matchfn(m[i]):
                     mm.append(m[i])
                     del m[i]
             repo.dirstate.update(m, 'n')
             repo.dirstate.update(mm, 'n', st_mtime=0)
             repo.dirstate.forget(forget)
 
             if not msg:
                 if not message:
                     message = "patch queue: %s\n" % patchfn
                 else:
                     message = "\n".join(message)
             else:
                 message = msg
 
             self.strip(repo, top, update=False, backup='strip', wlock=wlock)
-            n = repo.commit(filelist, message, changes[1], force=1, wlock=wlock)
+            n = repo.commit(filelist, message, changes[1], match=matchfn,
+                            force=1, wlock=wlock)
             self.applied[-1] = statusentry(revlog.hex(n), patchfn)
             self.applied_dirty = 1
         else:
             self.printdiff(repo, patchparent, fp=patchf)
             patchf.close()
             added = repo.status()[1]
             for a in added:
                 f = repo.wjoin(a)
                 try:
                     os.unlink(f)
                 except OSError, e:
                     if e.errno != errno.ENOENT:
                         raise
                 try: os.removedirs(os.path.dirname(f))
                 except: pass
             # forget the file copies in the dirstate
             # push should readd the files later on
             repo.dirstate.forget(added)
             self.pop(repo, force=True, wlock=wlock)
             self.push(repo, force=True, wlock=wlock)
 
     def init(self, repo, create=False):
         if not create and os.path.isdir(self.path):
             raise util.Abort(_("patch queue directory already exists"))
         try:
             os.mkdir(self.path)
         except OSError, inst:
             if inst.errno != errno.EEXIST or not create:
                 raise
         if create:
             return self.qrepo(create=True)
 
     def unapplied(self, repo, patch=None):
         if patch and patch not in self.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         if not patch:
             start = self.series_end()
         else:
             start = self.series.index(patch) + 1
         unapplied = []
         for i in xrange(start, len(self.series)):
             pushable, reason = self.pushable(i)
             if pushable:
                 unapplied.append((i, self.series[i]))
             self.explain_pushable(i)
         return unapplied
 
     def qseries(self, repo, missing=None, start=0, length=0, status=None,
                 summary=False):
         def displayname(patchname):
             if summary:
                 msg = self.readheaders(patchname)[0]
                 msg = msg and ': ' + msg[0] or ': '
             else:
                 msg = ''
             return '%s%s' % (patchname, msg)
 
         def pname(i):
             if status == 'A':
                 return self.applied[i].name
             else:
                 return self.series[i]
 
         applied = dict.fromkeys([p.name for p in self.applied])
         if not length:
             length = len(self.series) - start
         if not missing:
             for i in xrange(start, start+length):
                 pfx = ''
                 patch = pname(i)
                 if self.ui.verbose:
                     if patch in applied:
                         stat = 'A'
                     elif self.pushable(i)[0]:
                         stat = 'U'
                     else:
                         stat = 'G'
                     pfx = '%d %s ' % (i, stat)
                 self.ui.write('%s%s\n' % (pfx, displayname(patch)))
         else:
             msng_list = []
             for root, dirs, files in os.walk(self.path):
                 d = root[len(self.path) + 1:]
                 for f in files:
                     fl = os.path.join(d, f)
                     if (fl not in self.series and
                         fl not in (self.status_path, self.series_path)
                         and not fl.startswith('.')):
                         msng_list.append(fl)
             msng_list.sort()
             for x in msng_list:
                 pfx = self.ui.verbose and ('D ') or ''
                 self.ui.write("%s%s\n" % (pfx, displayname(x)))
 
     def issaveline(self, l):
         if l.name == '.hg.patches.save.line':
             return True
 
     def qrepo(self, create=False):
         if create or os.path.isdir(self.join(".hg")):
             return hg.repository(self.ui, path=self.path, create=create)
 
     def restore(self, repo, rev, delete=None, qupdate=None):
         c = repo.changelog.read(rev)
         desc = c[4].strip()
         lines = desc.splitlines()
         i = 0
         datastart = None
         series = []
         applied = []
         qpp = None
         for i in xrange(0, len(lines)):
             if lines[i] == 'Patch Data:':
                 datastart = i + 1
             elif lines[i].startswith('Dirstate:'):
                 l = lines[i].rstrip()
                 l = l[10:].split(' ')
                 qpp = [ hg.bin(x) for x in l ]
             elif datastart != None:
                 l = lines[i].rstrip()
                 se = statusentry(l)
                 file_ = se.name
                 if se.rev:
                     applied.append(se)
                 else:
                     series.append(file_)
         if datastart == None:
             self.ui.warn("No saved patch data found\n")
             return 1
         self.ui.warn("restoring status: %s\n" % lines[0])
         self.full_series = series
         self.applied = applied
         self.parse_series()
         self.series_dirty = 1
         self.applied_dirty = 1
         heads = repo.changelog.heads()
         if delete:
             if rev not in heads:
                 self.ui.warn("save entry has children, leaving it alone\n")
             else:
                 self.ui.warn("removing save entry %s\n" % hg.short(rev))
                 pp = repo.dirstate.parents()
                 if rev in pp:
                     update = True
                 else:
                     update = False
                 self.strip(repo, rev, update=update, backup='strip')
         if qpp:
             self.ui.warn("saved queue repository parents: %s %s\n" %
                          (hg.short(qpp[0]), hg.short(qpp[1])))
             if qupdate:
                 print "queue directory updating"
                 r = self.qrepo()
                 if not r:
                     self.ui.warn("Unable to load queue repository\n")
                     return 1
                 hg.clean(r, qpp[0])
 
     def save(self, repo, msg=None):
         if len(self.applied) == 0:
             self.ui.warn("save: no patches applied, exiting\n")
             return 1
         if self.issaveline(self.applied[-1]):
             self.ui.warn("status is already saved\n")
             return 1
 
         ar = [ ':' + x for x in self.full_series ]
         if not msg:
             msg = "hg patches saved state"
         else:
             msg = "hg patches: " + msg.rstrip('\r\n')
         r = self.qrepo()
         if r:
             pp = r.dirstate.parents()
             msg += "\nDirstate: %s %s" % (hg.hex(pp[0]), hg.hex(pp[1]))
         msg += "\n\nPatch Data:\n"
         text = msg + "\n".join([str(x) for x in self.applied]) + '\n' + (ar and
                    "\n".join(ar) + '\n' or "")
         n = repo.commit(None, text, user=None, force=1)
         if not n:
             self.ui.warn("repo commit failed\n")
             return 1
         self.applied.append(statusentry(revlog.hex(n),'.hg.patches.save.line'))
         self.applied_dirty = 1
 
     def full_series_end(self):
         if len(self.applied) > 0:
             p = self.applied[-1].name
             end = self.find_series(p)
             if end == None:
                 return len(self.full_series)
             return end + 1
         return 0
 
     def series_end(self, all_patches=False):
         end = 0
         def next(start):
             if all_patches:
                 return start
             i = start
             while i < len(self.series):
                 p, reason = self.pushable(i)
                 if p:
                     break
                 self.explain_pushable(i)
                 i += 1
             return i
         if len(self.applied) > 0:
             p = self.applied[-1].name
             try:
                 end = self.series.index(p)
             except ValueError:
                 return 0
             return next(end + 1)
         return next(end)
 
     def appliedname(self, index):
         pname = self.applied[index].name
         if not self.ui.verbose:
             p = pname
         else:
             p = str(self.series.index(pname)) + " " + pname
         return p
 
     def qimport(self, repo, files, patchname=None, rev=None, existing=None,
                 force=None, git=False):
         def checkseries(patchname):
             if patchname in self.series:
                 raise util.Abort(_('patch %s is already in the series file')
                                  % patchname)
         def checkfile(patchname):
             if not force and os.path.exists(self.join(patchname)):
                 raise util.Abort(_('patch "%s" already exists')
                                  % patchname)
 
         if rev:
             if files:
                 raise util.Abort(_('option "-r" not valid when importing '
                                    'files'))
             rev = cmdutil.revrange(repo, rev)
             rev.sort(lambda x, y: cmp(y, x))
         if (len(files) > 1 or len(rev) > 1) and patchname:
             raise util.Abort(_('option "-n" not valid when importing multiple '
                                'patches'))
         i = 0
         added = []
         if rev:
             # If mq patches are applied, we can only import revisions
             # that form a linear path to qbase.
             # Otherwise, they should form a linear path to a head.
             heads = repo.changelog.heads(repo.changelog.node(rev[-1]))
             if len(heads) > 1:
                 raise util.Abort(_('revision %d is the root of more than one '
                                    'branch') % rev[-1])
             if self.applied:
                 base = revlog.hex(repo.changelog.node(rev[0]))
                 if base in [n.rev for n in self.applied]:
                     raise util.Abort(_('revision %d is already managed')
                                      % rev[0])
                 if heads != [revlog.bin(self.applied[-1].rev)]:
                     raise util.Abort(_('revision %d is not the parent of '
                                        'the queue') % rev[0])
                 base = repo.changelog.rev(revlog.bin(self.applied[0].rev))
                 lastparent = repo.changelog.parentrevs(base)[0]
             else:
                 if heads != [repo.changelog.node(rev[0])]:
                     raise util.Abort(_('revision %d has unmanaged children')
                                      % rev[0])
                 lastparent = None
 
             if git:
                 self.diffopts().git = True
 
             for r in rev:
                 p1, p2 = repo.changelog.parentrevs(r)
                 n = repo.changelog.node(r)
                 if p2 != revlog.nullrev:
                     raise util.Abort(_('cannot import merge revision %d') % r)
                 if lastparent and lastparent != r:
                     raise util.Abort(_('revision %d is not the parent of %d')
                                      % (r, lastparent))
                 lastparent = p1
 
                 if not patchname:
                     patchname = normname('%d.diff' % r)
                 checkseries(patchname)
                 checkfile(patchname)
                 self.full_series.insert(0, patchname)
 
                 patchf = self.opener(patchname, "w")
                 patch.export(repo, [n], fp=patchf, opts=self.diffopts())
                 patchf.close()
 
                 se = statusentry(revlog.hex(n), patchname)
                 self.applied.insert(0, se)
 
                 added.append(patchname)
                 patchname = None
             self.parse_series()
             self.applied_dirty = 1
 
         for filename in files:
             if existing:
                 if filename == '-':
                     raise util.Abort(_('-e is incompatible with import from -'))
                 if not patchname:
                     patchname = normname(filename)
                 if not os.path.isfile(self.join(patchname)):
                     raise util.Abort(_("patch %s does not exist") % patchname)
             else:
                 try:
                     if filename == '-':
                         if not patchname:
                             raise util.Abort(_('need --name to import a patch from -'))
                         text = sys.stdin.read()
                     else:
                         text = file(filename).read()
                 except IOError:
                     raise util.Abort(_("unable to read %s") % patchname)
                 if not patchname:
                     patchname = normname(os.path.basename(filename))
                 checkfile(patchname)
                 patchf = self.opener(patchname, "w")
                 patchf.write(text)
             checkseries(patchname)
             index = self.full_series_end() + i
             self.full_series[index:index] = [patchname]
             self.parse_series()
             self.ui.warn("adding %s to series file\n" % patchname)
             i += 1
             added.append(patchname)
             patchname = None
         self.series_dirty = 1
         qrepo = self.qrepo()
         if qrepo:
             qrepo.add(added)
 
 def delete(ui, repo, *patches, **opts):
     """remove patches from queue
 
     With --rev, mq will stop managing the named revisions. The
     patches must be applied and at the base of the stack. This option
     is useful when the patches have been applied upstream.
 
     Otherwise, the patches must not be applied.
 
     With --keep, the patch files are preserved in the patch directory."""
     q = repo.mq
     q.delete(repo, patches, opts)
     q.save_dirty()
     return 0
 
 def applied(ui, repo, patch=None, **opts):
     """print the patches already applied"""
     q = repo.mq
     if patch:
         if patch not in q.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         end = q.series.index(patch) + 1
     else:
         end = len(q.applied)
     if not end:
         return
 
     return q.qseries(repo, length=end, status='A', summary=opts.get('summary'))
 
 def unapplied(ui, repo, patch=None, **opts):
     """print the patches not yet applied"""
     q = repo.mq
     if patch:
         if patch not in q.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         start = q.series.index(patch) + 1
     else:
         start = q.series_end()
     q.qseries(repo, start=start, summary=opts.get('summary'))
 
 def qimport(ui, repo, *filename, **opts):
     """import a patch
 
     The patch will have the same name as its source file unless you
     give it a new one with --name.
 
     You can register an existing patch inside the patch directory
     with the --existing flag.
 
     With --force, an existing patch of the same name will be overwritten.
 
     An existing changeset may be placed under mq control with --rev
     (e.g. qimport --rev tip -n patch will place tip under mq control).
     With --git, patches imported with --rev will use the git diff
     format.
     """
     q = repo.mq
     q.qimport(repo, filename, patchname=opts['name'],
               existing=opts['existing'], force=opts['force'], rev=opts['rev'],
               git=opts['git'])
     q.save_dirty()
     return 0
 
 def init(ui, repo, **opts):
     """init a new queue repository
 
     The queue repository is unversioned by default. If -c is
     specified, qinit will create a separate nested repository
     for patches. Use qcommit to commit changes to this queue
     repository."""
     q = repo.mq
     r = q.init(repo, create=opts['create_repo'])
     q.save_dirty()
     if r:
         if not os.path.exists(r.wjoin('.hgignore')):
             fp = r.wopener('.hgignore', 'w')
             fp.write('syntax: glob\n')
             fp.write('status\n')
             fp.write('guards\n')
             fp.close()
         if not os.path.exists(r.wjoin('series')):
             r.wopener('series', 'w').close()
         r.add(['.hgignore', 'series'])
         commands.add(ui, r)
     return 0
 
 def clone(ui, source, dest=None, **opts):
     '''clone main and patch repository at same time
 
     If source is local, destination will have no patches applied.  If
     source is remote, this command can not check if patches are
     applied in source, so cannot guarantee that patches are not
     applied in destination.  If you clone remote repository, be sure
     before that it has no patches applied.
 
     Source patch repository is looked for in <src>/.hg/patches by
     default.  Use -p <url> to change.
     '''
     commands.setremoteconfig(ui, opts)
     if dest is None:
         dest = hg.defaultdest(source)
     sr = hg.repository(ui, ui.expandpath(source))
     qbase, destrev = None, None
     if sr.local():
         if sr.mq.applied:
             qbase = revlog.bin(sr.mq.applied[0].rev)
             if not hg.islocal(dest):
-                destrev = sr.parents(qbase)[0]
+                heads = dict.fromkeys(sr.heads())
+                for h in sr.heads(qbase):
+                    del heads[h]
+                destrev = heads.keys()
+                destrev.append(sr.changelog.parents(qbase)[0])
     ui.note(_('cloning main repo\n'))
     sr, dr = hg.clone(ui, sr, dest,
                       pull=opts['pull'],
                       rev=destrev,
                       update=False,
                       stream=opts['uncompressed'])
     ui.note(_('cloning patch repo\n'))
     spr, dpr = hg.clone(ui, opts['patches'] or (sr.url() + '/.hg/patches'),
                         dr.url() + '/.hg/patches',
                         pull=opts['pull'],
                         update=not opts['noupdate'],
                         stream=opts['uncompressed'])
     if dr.local():
         if qbase:
             ui.note(_('stripping applied patches from destination repo\n'))
             dr.mq.strip(dr, qbase, update=False, backup=None)
         if not opts['noupdate']:
             ui.note(_('updating destination repo\n'))
             hg.update(dr, dr.changelog.tip())
 
 def commit(ui, repo, *pats, **opts):
     """commit changes in the queue repository"""
     q = repo.mq
     r = q.qrepo()
     if not r: raise util.Abort('no queue repository')
     commands.commit(r.ui, r, *pats, **opts)
 
 def series(ui, repo, **opts):
     """print the entire series file"""
     repo.mq.qseries(repo, missing=opts['missing'], summary=opts['summary'])
     return 0
 
 def top(ui, repo, **opts):
     """print the name of the current patch"""
     q = repo.mq
     t = len(q.applied)
     if t:
         return q.qseries(repo, start=t-1, length=1, status='A',
                          summary=opts.get('summary'))
     else:
         ui.write("No patches applied\n")
         return 1
 
 def next(ui, repo, **opts):
     """print the name of the next patch"""
     q = repo.mq
     end = q.series_end()
     if end == len(q.series):
         ui.write("All patches applied\n")
         return 1
     return q.qseries(repo, start=end, length=1, summary=opts.get('summary'))
 
 def prev(ui, repo, **opts):
     """print the name of the previous patch"""
     q = repo.mq
     l = len(q.applied)
     if l == 1:
         ui.write("Only one patch applied\n")
         return 1
     if not l:
         ui.write("No patches applied\n")
         return 1
     return q.qseries(repo, start=l-2, length=1, status='A',
                      summary=opts.get('summary'))
 
 def new(ui, repo, patch, **opts):
     """create a new patch
 
     qnew creates a new patch on top of the currently-applied patch
     (if any). It will refuse to run if there are any outstanding
     changes unless -f is specified, in which case the patch will
     be initialised with them.
 
     -e, -m or -l set the patch header as well as the commit message.
     If none is specified, the patch header is empty and the
     commit message is 'New patch: PATCH'"""
     q = repo.mq
     message = commands.logmessage(opts)
     if opts['edit']:
         message = ui.edit(message, ui.username())
     q.new(repo, patch, msg=message, force=opts['force'])
     q.save_dirty()
     return 0
 
 def refresh(ui, repo, *pats, **opts):
     """update the current patch
 
     If any file patterns are provided, the refreshed patch will contain only
     the modifications that match those patterns; the remaining modifications
     will remain in the working directory.
 
     hg add/remove/copy/rename work as usual, though you might want to use
     git-style patches (--git or [diff] git=1) to track copies and renames.
     """
     q = repo.mq
     message = commands.logmessage(opts)
     if opts['edit']:
         if message:
             raise util.Abort(_('option "-e" incompatible with "-m" or "-l"'))
         patch = q.applied[-1].name
         (message, comment, user, date, hasdiff) = q.readheaders(patch)
         message = ui.edit('\n'.join(message), user or ui.username())
     ret = q.refresh(repo, pats, msg=message, **opts)
     q.save_dirty()
     return ret
 
 def diff(ui, repo, *pats, **opts):
     """diff of the current patch"""
     repo.mq.diff(repo, pats, opts)
     return 0
 
 def fold(ui, repo, *files, **opts):
     """fold the named patches into the current patch
 
     Patches must not yet be applied. Each patch will be successively
     applied to the current patch in the order given. If all the
     patches apply successfully, the current patch will be refreshed
     with the new cumulative patch, and the folded patches will
     be deleted. With -k/--keep, the folded patch files will not
     be removed afterwards.
 
     The header for each folded patch will be concatenated with
     the current patch header, separated by a line of '* * *'."""
 
     q = repo.mq
 
     if not files:
         raise util.Abort(_('qfold requires at least one patch name'))
     if not q.check_toppatch(repo):
         raise util.Abort(_('No patches applied'))
 
     message = commands.logmessage(opts)
     if opts['edit']:
         if message:
             raise util.Abort(_('option "-e" incompatible with "-m" or "-l"'))
 
     parent = q.lookup('qtip')
     patches = []
     messages = []
     for f in files:
         p = q.lookup(f)
         if p in patches or p == parent:
             ui.warn(_('Skipping already folded patch %s') % p)
         if q.isapplied(p):
             raise util.Abort(_('qfold cannot fold already applied patch %s') % p)
         patches.append(p)
 
     for p in patches:
         if not message:
             messages.append(q.readheaders(p)[0])
         pf = q.join(p)
         (patchsuccess, files, fuzz) = q.patch(repo, pf)
         if not patchsuccess:
             raise util.Abort(_('Error folding patch %s') % p)
         patch.updatedir(ui, repo, files)
 
     if not message:
         message, comments, user = q.readheaders(parent)[0:3]
         for msg in messages:
             message.append('* * *')
             message.extend(msg)
         message = '\n'.join(message)
 
     if opts['edit']:
         message = ui.edit(message, user or ui.username())
 
     q.refresh(repo, msg=message)
     q.delete(repo, patches, opts)
     q.save_dirty()
 
 def guard(ui, repo, *args, **opts):
     '''set or print guards for a patch
 
     Guards control whether a patch can be pushed. A patch with no
     guards is always pushed. A patch with a positive guard ("+foo") is
     pushed only if the qselect command has activated it. A patch with
     a negative guard ("-foo") is never pushed if the qselect command
     has activated it.
 
     With no arguments, print the currently active guards.
     With arguments, set guards for the named patch.
 
     To set a negative guard "-foo" on topmost patch ("--" is needed so
     hg will not interpret "-foo" as an option):
       hg qguard -- -foo
 
     To set guards on another patch:
       hg qguard other.patch +2.6.17 -stable
     '''
     def status(idx):
         guards = q.series_guards[idx] or ['unguarded']
         ui.write('%s: %s\n' % (q.series[idx], ' '.join(guards)))
     q = repo.mq
     patch = None
     args = list(args)
     if opts['list']:
         if args or opts['none']:
             raise util.Abort(_('cannot mix -l/--list with options or arguments'))
         for i in xrange(len(q.series)):
             status(i)
         return
     if not args or args[0][0:1] in '-+':
         if not q.applied:
             raise util.Abort(_('no patches applied'))
         patch = q.applied[-1].name
     if patch is None and args[0][0:1] not in '-+':
         patch = args.pop(0)
     if patch is None:
         raise util.Abort(_('no patch to work with'))
     if args or opts['none']:
         idx = q.find_series(patch)
         if idx is None:
             raise util.Abort(_('no patch named %s') % patch)
         q.set_guards(idx, args)
         q.save_dirty()
     else:
         status(q.series.index(q.lookup(patch)))
 
 def header(ui, repo, patch=None):
     """Print the header of the topmost or specified patch"""
     q = repo.mq
 
     if patch:
         patch = q.lookup(patch)
     else:
         if not q.applied:
             ui.write('No patches applied\n')
             return 1
         patch = q.lookup('qtip')
     message = repo.mq.readheaders(patch)[0]
 
     ui.write('\n'.join(message) + '\n')
 
 def lastsavename(path):
     (directory, base) = os.path.split(path)
     names = os.listdir(directory)
     namere = re.compile("%s.([0-9]+)" % base)
     maxindex = None
     maxname = None
     for f in names:
         m = namere.match(f)
         if m:
             index = int(m.group(1))
             if maxindex == None or index > maxindex:
                 maxindex = index
                 maxname = f
     if maxname:
         return (os.path.join(directory, maxname), maxindex)
     return (None, None)
 
 def savename(path):
     (last, index) = lastsavename(path)
     if last is None:
         index = 0
     newpath = path + ".%d" % (index + 1)
     return newpath
 
 def push(ui, repo, patch=None, **opts):
     """push the next patch onto the stack"""
     q = repo.mq
     mergeq = None
 
     if opts['all']:
         if not q.series:
             ui.warn(_('no patches in series\n'))
             return 0
         patch = q.series[-1]
     if opts['merge']:
         if opts['name']:
             newpath = opts['name']
         else:
             newpath, i = lastsavename(q.path)
         if not newpath:
             ui.warn("no saved queues found, please use -n\n")
             return 1
         mergeq = queue(ui, repo.join(""), newpath)
         ui.warn("merging with queue at: %s\n" % mergeq.path)
     ret = q.push(repo, patch, force=opts['force'], list=opts['list'],
                  mergeq=mergeq)
     q.save_dirty()
     return ret
 
 def pop(ui, repo, patch=None, **opts):
     """pop the current patch off the stack"""
     localupdate = True
     if opts['name']:
         q = queue(ui, repo.join(""), repo.join(opts['name']))
         ui.warn('using patch queue: %s\n' % q.path)
         localupdate = False
     else:
         q = repo.mq
     ret = q.pop(repo, patch, force=opts['force'], update=localupdate,
                 all=opts['all'])
     q.save_dirty()
     return ret
 
 def rename(ui, repo, patch, name=None, **opts):
     """rename a patch
 
     With one argument, renames the current patch to PATCH1.
     With two arguments, renames PATCH1 to PATCH2."""
 
     q = repo.mq
 
     if not name:
         name = patch
         patch = None
 
     if patch:
         patch = q.lookup(patch)
     else:
         if not q.applied:
             ui.write(_('No patches applied\n'))
             return
         patch = q.lookup('qtip')
     absdest = q.join(name)
     if os.path.isdir(absdest):
         name = normname(os.path.join(name, os.path.basename(patch)))
         absdest = q.join(name)
     if os.path.exists(absdest):
         raise util.Abort(_('%s already exists') % absdest)
 
     if name in q.series:
         raise util.Abort(_('A patch named %s already exists in the series file') % name)
 
     if ui.verbose:
         ui.write('Renaming %s to %s\n' % (patch, name))
     i = q.find_series(patch)
     guards = q.guard_re.findall(q.full_series[i])
     q.full_series[i] = name + ''.join([' #' + g for g in guards])
     q.parse_series()
     q.series_dirty = 1
 
     info = q.isapplied(patch)
     if info:
         q.applied[info[0]] = statusentry(info[1], name)
     q.applied_dirty = 1
 
     util.rename(q.join(patch), absdest)
     r = q.qrepo()
     if r:
         wlock = r.wlock()
         if r.dirstate.state(name) == 'r':
             r.undelete([name], wlock)
         r.copy(patch, name, wlock)
         r.remove([patch], False, wlock)
 
     q.save_dirty()
 
 def restore(ui, repo, rev, **opts):
     """restore the queue state saved by a rev"""
     rev = repo.lookup(rev)
     q = repo.mq
     q.restore(repo, rev, delete=opts['delete'],
               qupdate=opts['update'])
     q.save_dirty()
     return 0
 
 def save(ui, repo, **opts):
     """save current queue state"""
     q = repo.mq
     message = commands.logmessage(opts)
     ret = q.save(repo, msg=message)
     if ret:
         return ret
     q.save_dirty()
     if opts['copy']:
         path = q.path
         if opts['name']:
             newpath = os.path.join(q.basepath, opts['name'])
             if os.path.exists(newpath):
                 if not os.path.isdir(newpath):
                     raise util.Abort(_('destination %s exists and is not '
                                        'a directory') % newpath)
                 if not opts['force']:
                     raise util.Abort(_('destination %s exists, '
                                        'use -f to force') % newpath)
         else:
             newpath = savename(path)
         ui.warn("copy %s to %s\n" % (path, newpath))
         util.copyfiles(path, newpath)
     if opts['empty']:
         try:
             os.unlink(q.join(q.status_path))
         except:
             pass
     return 0
 
 def strip(ui, repo, rev, **opts):
     """strip a revision and all later revs on the same branch"""
     rev = repo.lookup(rev)
     backup = 'all'
     if opts['backup']:
         backup = 'strip'
     elif opts['nobackup']:
         backup = 'none'
     update = repo.dirstate.parents()[0] != revlog.nullid
     repo.mq.strip(repo, rev, backup=backup, update=update)
     return 0
 
 def select(ui, repo, *args, **opts):
     '''set or print guarded patches to push
 
     Use the qguard command to set or print guards on patch, then use
     qselect to tell mq which guards to use. A patch will be pushed if it
     has no guards or any positive guards match the currently selected guard,
     but will not be pushed if any negative guards match the current guard.
     For example:
 
         qguard foo.patch -stable    (negative guard)
         qguard bar.patch +stable    (positive guard)
         qselect stable
 
     This activates the "stable" guard. mq will skip foo.patch (because
     it has a negative match) but push bar.patch (because it
     has a positive match).
 
     With no arguments, prints the currently active guards.
     With one argument, sets the active guard.
 
     Use -n/--none to deactivate guards (no other arguments needed).
     When no guards are active, patches with positive guards are skipped
     and patches with negative guards are pushed.
 
     qselect can change the guards on applied patches. It does not pop
     guarded patches by default. Use --pop to pop back to the last applied
     patch that is not guarded. Use --reapply (which implies --pop) to push
     back to the current patch afterwards, but skip guarded patches.
 
     Use -s/--series to print a list of all guards in the series file (no
     other arguments needed). Use -v for more information.'''
 
     q = repo.mq
     guards = q.active()
     if args or opts['none']:
         old_unapplied = q.unapplied(repo)
         old_guarded = [i for i in xrange(len(q.applied)) if
                        not q.pushable(i)[0]]
         q.set_active(args)
         q.save_dirty()
         if not args:
             ui.status(_('guards deactivated\n'))
         if not opts['pop'] and not opts['reapply']:
             unapplied = q.unapplied(repo)
             guarded = [i for i in xrange(len(q.applied))
                        if not q.pushable(i)[0]]
             if len(unapplied) != len(old_unapplied):
                 ui.status(_('number of unguarded, unapplied patches has '
                             'changed from %d to %d\n') %
                           (len(old_unapplied), len(unapplied)))
             if len(guarded) != len(old_guarded):
                 ui.status(_('number of guarded, applied patches has changed '
                             'from %d to %d\n') %
                           (len(old_guarded), len(guarded)))
     elif opts['series']:
         guards = {}
         noguards = 0
         for gs in q.series_guards:
             if not gs:
                 noguards += 1
             for g in gs:
                 guards.setdefault(g, 0)
                 guards[g] += 1
         if ui.verbose:
             guards['NONE'] = noguards
         guards = guards.items()
         guards.sort(lambda a, b: cmp(a[0][1:], b[0][1:]))
         if guards:
             ui.note(_('guards in series file:\n'))
             for guard, count in guards:
                 ui.note('%2d  ' % count)
                 ui.write(guard, '\n')
         else:
             ui.note(_('no guards in series file\n'))
     else:
         if guards:
             ui.note(_('active guards:\n'))
             for g in guards:
                 ui.write(g, '\n')
         else:
             ui.write(_('no active guards\n'))
     reapply = opts['reapply'] and q.applied and q.appliedname(-1)
     popped = False
     if opts['pop'] or opts['reapply']:
         for i in xrange(len(q.applied)):
             pushable, reason = q.pushable(i)
             if not pushable:
                 ui.status(_('popping guarded patches\n'))
                 popped = True
                 if i == 0:
                     q.pop(repo, all=True)
                 else:
                     q.pop(repo, i-1)
                 break
     if popped:
         try:
             if reapply:
                 ui.status(_('reapplying unguarded patches\n'))
                 q.push(repo, reapply)
         finally:
             q.save_dirty()
 
 def reposetup(ui, repo):
     class mqrepo(repo.__class__):
         def abort_if_wdir_patched(self, errmsg, force=False):
             if self.mq.applied and not force:
                 parent = revlog.hex(self.dirstate.parents()[0])
                 if parent in [s.rev for s in self.mq.applied]:
                     raise util.Abort(errmsg)
 
         def commit(self, *args, **opts):
             if len(args) >= 6:
                 force = args[5]
             else:
                 force = opts.get('force')
             self.abort_if_wdir_patched(
                 _('cannot commit over an applied mq patch'),
                 force)
 
             return super(mqrepo, self).commit(*args, **opts)
 
         def push(self, remote, force=False, revs=None):
             if self.mq.applied and not force and not revs:
                 raise util.Abort(_('source has mq patches applied'))
             return super(mqrepo, self).push(remote, force, revs)
 
         def tags(self):
             if self.tagscache:
                 return self.tagscache
 
             tagscache = super(mqrepo, self).tags()
 
             q = self.mq
             if not q.applied:
                 return tagscache
 
             mqtags = [(patch.rev, patch.name) for patch in q.applied]
             mqtags.append((mqtags[-1][0], 'qtip'))
             mqtags.append((mqtags[0][0], 'qbase'))
             for patch in mqtags:
                 if patch[1] in tagscache:
                     self.ui.warn('Tag %s overrides mq patch of the same name\n' % patch[1])
                 else:
                     tagscache[patch[1]] = revlog.bin(patch[0])
 
             return tagscache
 
         def _branchtags(self):
             q = self.mq
             if not q.applied:
                 return super(mqrepo, self)._branchtags()
 
             self.branchcache = {} # avoid recursion in changectx
             cl = self.changelog
             partial, last, lrev = self._readbranchcache()
 
             qbase = cl.rev(revlog.bin(q.applied[0].rev))
             start = lrev + 1
             if start < qbase:
                 # update the cache (excluding the patches) and save it
                 self._updatebranchcache(partial, lrev+1, qbase)
                 self._writebranchcache(partial, cl.node(qbase-1), qbase-1)
                 start = qbase
             # if start = qbase, the cache is as updated as it should be.
             # if start > qbase, the cache includes (part of) the patches.
             # we might as well use it, but we won't save it.
 
             # update the cache up to the tip
             self._updatebranchcache(partial, start, cl.count())
 
             return partial
 
     if repo.local():
         repo.__class__ = mqrepo
         repo.mq = queue(ui, repo.join(""))
 
 seriesopts = [('s', 'summary', None, _('print first line of patch header'))]
 
 cmdtable = {
     "qapplied": (applied, [] + seriesopts, 'hg qapplied [-s] [PATCH]'),
     "qclone": (clone,
                [('', 'pull', None, _('use pull protocol to copy metadata')),
                 ('U', 'noupdate', None, _('do not update the new working directories')),
                 ('', 'uncompressed', None,
                  _('use uncompressed transfer (fast over LAN)')),
                 ('e', 'ssh', '', _('specify ssh command to use')),
                 ('p', 'patches', '', _('location of source patch repo')),
                 ('', 'remotecmd', '',
                  _('specify hg command to run on the remote side'))],
                'hg qclone [OPTION]... SOURCE [DEST]'),
     "qcommit|qci":
         (commit,
          commands.table["^commit|ci"][1],
          'hg qcommit [OPTION]... [FILE]...'),
     "^qdiff": (diff,
                [('g', 'git', None, _('use git extended diff format')),
                 ('I', 'include', [], _('include names matching the given patterns')),
                 ('X', 'exclude', [], _('exclude names matching the given patterns'))],
                'hg qdiff [-I] [-X] [FILE]...'),
     "qdelete|qremove|qrm":
         (delete,
          [('k', 'keep', None, _('keep patch file')),
           ('r', 'rev', [], _('stop managing a revision'))],
           'hg qdelete [-k] [-r REV]... PATCH...'),
     'qfold':
         (fold,
          [('e', 'edit', None, _('edit patch header')),
           ('k', 'keep', None, _('keep folded patch files'))
           ] + commands.commitopts,
          'hg qfold [-e] [-m <text>] [-l <file] PATCH...'),
     'qguard': (guard, [('l', 'list', None, _('list all patches and guards')),
                        ('n', 'none', None, _('drop all guards'))],
                'hg qguard [PATCH] [+GUARD...] [-GUARD...]'),
     'qheader': (header, [],
                 _('hg qheader [PATCH]')),
     "^qimport":
         (qimport,
          [('e', 'existing', None, 'import file in patch dir'),
           ('n', 'name', '', 'patch file name'),
           ('f', 'force', None, 'overwrite existing files'),
           ('r', 'rev', [], 'place existing revisions under mq control'),
           ('g', 'git', None, _('use git extended diff format'))],
          'hg qimport [-e] [-n NAME] [-f] [-g] [-r REV]... FILE...'),
     "^qinit":
         (init,
          [('c', 'create-repo', None, 'create queue repository')],
          'hg qinit [-c]'),
     "qnew":
         (new,
          [('e', 'edit', None, _('edit commit message')),
           ('f', 'force', None, _('import uncommitted changes into patch'))
           ] + commands.commitopts,
          'hg qnew [-e] [-m TEXT] [-l FILE] [-f] PATCH'),
     "qnext": (next, [] + seriesopts, 'hg qnext [-s]'),
     "qprev": (prev, [] + seriesopts, 'hg qprev [-s]'),
     "^qpop":
         (pop,
          [('a', 'all', None, 'pop all patches'),
           ('n', 'name', '', 'queue name to pop'),
           ('f', 'force', None, 'forget any local changes')],
          'hg qpop [-a] [-n NAME] [-f] [PATCH | INDEX]'),
     "^qpush":
         (push,
          [('f', 'force', None, 'apply if the patch has rejects'),
           ('l', 'list', None, 'list patch name in commit text'),
           ('a', 'all', None, 'apply all patches'),
           ('m', 'merge', None, 'merge from another queue'),
           ('n', 'name', '', 'merge queue name')],
          'hg qpush [-f] [-l] [-a] [-m] [-n NAME] [PATCH | INDEX]'),
     "^qrefresh":
         (refresh,
          [('e', 'edit', None, _('edit commit message')),
           ('g', 'git', None, _('use git extended diff format')),
           ('s', 'short', None, 'refresh only files already in the patch'),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))
           ] + commands.commitopts,
          'hg qrefresh [-I] [-X] [-e] [-m TEXT] [-l FILE] [-s] FILES...'),
     'qrename|qmv':
         (rename, [], 'hg qrename PATCH1 [PATCH2]'),
     "qrestore":
         (restore,
          [('d', 'delete', None, 'delete save entry'),
           ('u', 'update', None, 'update queue working dir')],
          'hg qrestore [-d] [-u] REV'),
     "qsave":
         (save,
          [('c', 'copy', None, 'copy patch directory'),
           ('n', 'name', '', 'copy directory name'),
           ('e', 'empty', None, 'clear queue status file'),
           ('f', 'force', None, 'force copy')] + commands.commitopts,
          'hg qsave [-m TEXT] [-l FILE] [-c] [-n NAME] [-e] [-f]'),
     "qselect": (select,
                 [('n', 'none', None, _('disable all guards')),
                  ('s', 'series', None, _('list all guards in series file')),
                  ('', 'pop', None,
                   _('pop to before first guarded applied patch')),
                  ('', 'reapply', None, _('pop, then reapply patches'))],
                 'hg qselect [OPTION...] [GUARD...]'),
     "qseries":
         (series,
          [('m', 'missing', None, 'print patches not in series')] + seriesopts,
          'hg qseries [-ms]'),
     "^strip":
         (strip,
          [('f', 'force', None, 'force multi-head removal'),
           ('b', 'backup', None, 'bundle unrelated changesets'),
           ('n', 'nobackup', None, 'no backups')],
          'hg strip [-f] [-b] [-n] REV'),
     "qtop": (top, [] + seriesopts, 'hg qtop [-s]'),
     "qunapplied": (unapplied, [] + seriesopts, 'hg qunapplied [-s] [PATCH]'),
 }

mercurial/dirstate.py

@@ -1,534 +1,534 b''
 """
 dirstate.py - working directory tracking 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 struct, os, time, bisect, stat, strutil, util, re, errno
 
 class dirstate(object):
     format = ">cllll"
 
     def __init__(self, opener, ui, root):
         self.opener = opener
         self.root = root
         self.dirty = 0
         self.ui = ui
         self.map = None
         self.pl = None
         self.dirs = None
         self.copymap = {}
         self.ignorefunc = None
 
     def wjoin(self, f):
         return os.path.join(self.root, f)
 
     def getcwd(self):
         cwd = os.getcwd()
         if cwd == self.root: return ''
         # self.root ends with a path separator if self.root is '/' or 'C:\'
         common_prefix_len = len(self.root)
         if not self.root.endswith(os.sep):
             common_prefix_len += 1
         return cwd[common_prefix_len:]
 
     def hgignore(self):
         '''return the contents of .hgignore files as a list of patterns.
 
         the files parsed for patterns include:
         .hgignore in the repository root
         any additional files specified in the [ui] section of ~/.hgrc
 
         trailing white space is dropped.
         the escape character is backslash.
         comments start with #.
         empty lines are skipped.
 
         lines can be of the following formats:
 
         syntax: regexp # defaults following lines to non-rooted regexps
         syntax: glob   # defaults following lines to non-rooted globs
         re:pattern     # non-rooted regular expression
         glob:pattern   # non-rooted glob
         pattern        # pattern of the current default type'''
         syntaxes = {'re': 'relre:', 'regexp': 'relre:', 'glob': 'relglob:'}
         def parselines(fp):
             for line in fp:
                 escape = False
                 for i in xrange(len(line)):
                     if escape: escape = False
                     elif line[i] == '\\': escape = True
                     elif line[i] == '#': break
                 line = line[:i].rstrip()
                 if line: yield line
         repoignore = self.wjoin('.hgignore')
         files = [repoignore]
         files.extend(self.ui.hgignorefiles())
         pats = {}
         for f in files:
             try:
                 pats[f] = []
                 fp = open(f)
                 syntax = 'relre:'
                 for line in parselines(fp):
                     if line.startswith('syntax:'):
                         s = line[7:].strip()
                         try:
                             syntax = syntaxes[s]
                         except KeyError:
                             self.ui.warn(_("%s: ignoring invalid "
                                            "syntax '%s'\n") % (f, s))
                         continue
                     pat = syntax + line
                     for s in syntaxes.values():
                         if line.startswith(s):
                             pat = line
                             break
                     pats[f].append(pat)
             except IOError, inst:
                 if f != repoignore:
                     self.ui.warn(_("skipping unreadable ignore file"
                                    " '%s': %s\n") % (f, inst.strerror))
         return pats
 
     def ignore(self, fn):
         '''default match function used by dirstate and
         localrepository.  this honours the repository .hgignore file
         and any other files specified in the [ui] section of .hgrc.'''
         if not self.ignorefunc:
             ignore = self.hgignore()
             allpats = []
             [allpats.extend(patlist) for patlist in ignore.values()]
             if allpats:
                 try:
                     files, self.ignorefunc, anypats = (
                         util.matcher(self.root, inc=allpats, src='.hgignore'))
                 except util.Abort:
                     # Re-raise an exception where the src is the right file
                     for f, patlist in ignore.items():
                         files, self.ignorefunc, anypats = (
                             util.matcher(self.root, inc=patlist, src=f))
             else:
                 self.ignorefunc = util.never
         return self.ignorefunc(fn)
 
     def __del__(self):
         if self.dirty:
             self.write()
 
     def __getitem__(self, key):
         try:
             return self.map[key]
         except TypeError:
             self.lazyread()
             return self[key]
 
     def __contains__(self, key):
         self.lazyread()
         return key in self.map
 
     def parents(self):
         self.lazyread()
         return self.pl
 
     def markdirty(self):
         if not self.dirty:
             self.dirty = 1
 
     def setparents(self, p1, p2=nullid):
         self.lazyread()
         self.markdirty()
         self.pl = p1, p2
 
     def state(self, key):
         try:
             return self[key][0]
         except KeyError:
             return "?"
 
     def lazyread(self):
         if self.map is None:
             self.read()
 
     def parse(self, st):
         self.pl = [st[:20], st[20: 40]]
 
         # deref fields so they will be local in loop
         map = self.map
         copymap = self.copymap
         format = self.format
         unpack = struct.unpack
 
         pos = 40
         e_size = struct.calcsize(format)
 
         while pos < len(st):
             newpos = pos + e_size
             e = unpack(format, st[pos:newpos])
             l = e[4]
             pos = newpos
             newpos = pos + l
             f = st[pos:newpos]
             if '\0' in f:
                 f, c = f.split('\0')
                 copymap[f] = c
             map[f] = e[:4]
             pos = newpos
 
     def read(self):
         self.map = {}
         self.pl = [nullid, nullid]
         try:
             st = self.opener("dirstate").read()
             if st:
                 self.parse(st)
         except IOError, err:
             if err.errno != errno.ENOENT: raise
 
     def copy(self, source, dest):
         self.lazyread()
         self.markdirty()
         self.copymap[dest] = source
 
     def copied(self, file):
         return self.copymap.get(file, None)
 
     def copies(self):
         return self.copymap
 
     def initdirs(self):
         if self.dirs is None:
             self.dirs = {}
             for f in self.map:
                 self.updatedirs(f, 1)
 
     def updatedirs(self, path, delta):
         if self.dirs is not None:
             for c in strutil.findall(path, '/'):
                 pc = path[:c]
                 self.dirs.setdefault(pc, 0)
                 self.dirs[pc] += delta
 
     def checkinterfering(self, files):
         def prefixes(f):
             for c in strutil.rfindall(f, '/'):
                 yield f[:c]
         self.lazyread()
         self.initdirs()
         seendirs = {}
         for f in files:
             # shadows
             if self.dirs.get(f):
                 raise util.Abort(_('directory named %r already in dirstate') %
                                  f)
             for d in prefixes(f):
                 if d in seendirs:
                     break
                 if d in self.map:
                     raise util.Abort(_('file named %r already in dirstate') %
                                      d)
                 seendirs[d] = True
             # disallowed
             if '\r' in f or '\n' in f:
                 raise util.Abort(_("'\\n' and '\\r' disallowed in filenames"))
 
     def update(self, files, state, **kw):
         ''' current states:
         n  normal
         m  needs merging
         r  marked for removal
         a  marked for addition'''
 
         if not files: return
         self.lazyread()
         self.markdirty()
         if state == "a":
             self.initdirs()
             self.checkinterfering(files)
         for f in files:
             if state == "r":
                 self.map[f] = ('r', 0, 0, 0)
                 self.updatedirs(f, -1)
             else:
                 if state == "a":
                     self.updatedirs(f, 1)
                 s = os.lstat(self.wjoin(f))
                 st_size = kw.get('st_size', s.st_size)
                 st_mtime = kw.get('st_mtime', s.st_mtime)
                 self.map[f] = (state, s.st_mode, st_size, st_mtime)
             if self.copymap.has_key(f):
                 del self.copymap[f]
 
     def forget(self, files):
         if not files: return
         self.lazyread()
         self.markdirty()
         self.initdirs()
         for f in files:
             try:
                 del self.map[f]
                 self.updatedirs(f, -1)
             except KeyError:
                 self.ui.warn(_("not in dirstate: %s!\n") % f)
                 pass
 
     def clear(self):
         self.map = {}
         self.copymap = {}
         self.dirs = None
         self.markdirty()
 
     def rebuild(self, parent, files):
         self.clear()
         for f in files:
             if files.execf(f):
                 self.map[f] = ('n', 0777, -1, 0)
             else:
                 self.map[f] = ('n', 0666, -1, 0)
         self.pl = (parent, nullid)
         self.markdirty()
 
     def write(self):
         if not self.dirty:
             return
         st = self.opener("dirstate", "w", atomic=True)
         st.write("".join(self.pl))
         for f, e in self.map.items():
             c = self.copied(f)
             if c:
                 f = f + "\0" + c
             e = struct.pack(self.format, e[0], e[1], e[2], e[3], len(f))
             st.write(e + f)
         self.dirty = 0
 
     def filterfiles(self, files):
         ret = {}
         unknown = []
 
         for x in files:
             if x == '.':
                 return self.map.copy()
             if x not in self.map:
                 unknown.append(x)
             else:
                 ret[x] = self.map[x]
 
         if not unknown:
             return ret
 
         b = self.map.keys()
         b.sort()
         blen = len(b)
 
         for x in unknown:
             bs = bisect.bisect(b, "%s%s" % (x, '/'))
             while bs < blen:
                 s = b[bs]
                 if len(s) > len(x) and s.startswith(x):
                     ret[s] = self.map[s]
                 else:
                     break
                 bs += 1
         return ret
 
     def supported_type(self, f, st, verbose=False):
         if stat.S_ISREG(st.st_mode) or stat.S_ISLNK(st.st_mode):
             return True
         if verbose:
             kind = 'unknown'
             if stat.S_ISCHR(st.st_mode): kind = _('character device')
             elif stat.S_ISBLK(st.st_mode): kind = _('block device')
             elif stat.S_ISFIFO(st.st_mode): kind = _('fifo')
             elif stat.S_ISSOCK(st.st_mode): kind = _('socket')
             elif stat.S_ISDIR(st.st_mode): kind = _('directory')
             self.ui.warn(_('%s: unsupported file type (type is %s)\n') % (
                 util.pathto(self.getcwd(), f),
                 kind))
         return False
 
     def walk(self, files=None, match=util.always, badmatch=None):
         # filter out the stat
         for src, f, st in self.statwalk(files, match, badmatch=badmatch):
             yield src, f
 
     def statwalk(self, files=None, match=util.always, ignored=False,
                  badmatch=None, directories=False):
         '''
         walk recursively through the directory tree, finding all files
         matched by the match function
 
         results are yielded in a tuple (src, filename, st), where src
         is one of:
         'f' the file was found in the directory tree
         'd' the file is a directory of the tree
         'm' the file was only in the dirstate and not in the tree
         'b' file was not found and matched badmatch
 
         and st is the stat result if the file was found in the directory.
         '''
         self.lazyread()
 
         # walk all files by default
         if not files:
-            files = [self.root]
+            files = ['.']
             dc = self.map.copy()
         else:
             files = util.unique(files)
             dc = self.filterfiles(files)
 
         def imatch(file_):
             if file_ not in dc and self.ignore(file_):
                 return False
             return match(file_)
 
         if ignored: imatch = match
 
         # self.root may end with a path separator when self.root == '/'
         common_prefix_len = len(self.root)
         if not self.root.endswith(os.sep):
             common_prefix_len += 1
         # recursion free walker, faster than os.walk.
         def findfiles(s):
             work = [s]
             if directories:
                 yield 'd', util.normpath(s[common_prefix_len:]), os.lstat(s)
             while work:
                 top = work.pop()
                 names = os.listdir(top)
                 names.sort()
                 # nd is the top of the repository dir tree
                 nd = util.normpath(top[common_prefix_len:])
                 if nd == '.':
                     nd = ''
                 else:
                     # do not recurse into a repo contained in this
                     # one. use bisect to find .hg directory so speed
                     # is good on big directory.
                     hg = bisect.bisect_left(names, '.hg')
                     if hg < len(names) and names[hg] == '.hg':
                         if os.path.isdir(os.path.join(top, '.hg')):
                             continue
                 for f in names:
                     np = util.pconvert(os.path.join(nd, f))
                     if seen(np):
                         continue
                     p = os.path.join(top, f)
                     # don't trip over symlinks
                     st = os.lstat(p)
                     if stat.S_ISDIR(st.st_mode):
                         ds = util.pconvert(os.path.join(nd, f +'/'))
                         if imatch(ds):
                             work.append(p)
                             if directories:
                                 yield 'd', np, st
                         if imatch(np) and np in dc:
                             yield 'm', np, st
                     elif imatch(np):
                         if self.supported_type(np, st):
                             yield 'f', np, st
                         elif np in dc:
                             yield 'm', np, st
 
         known = {'.hg': 1}
         def seen(fn):
             if fn in known: return True
             known[fn] = 1
 
         # step one, find all files that match our criteria
         files.sort()
         for ff in files:
             nf = util.normpath(ff)
             f = self.wjoin(ff)
             try:
                 st = os.lstat(f)
             except OSError, inst:
                 found = False
                 for fn in dc:
                     if nf == fn or (fn.startswith(nf) and fn[len(nf)] == '/'):
                         found = True
                         break
                 if not found:
                     if inst.errno != errno.ENOENT or not badmatch:
                         self.ui.warn('%s: %s\n' % (
                             util.pathto(self.getcwd(), ff),
                             inst.strerror))
                     elif badmatch and badmatch(ff) and imatch(nf):
                         yield 'b', ff, None
                 continue
             if stat.S_ISDIR(st.st_mode):
                 cmp1 = (lambda x, y: cmp(x[1], y[1]))
                 sorted_ = [ x for x in findfiles(f) ]
                 sorted_.sort(cmp1)
                 for e in sorted_:
                     yield e
             else:
                 if not seen(nf) and match(nf):
                     if self.supported_type(ff, st, verbose=True):
                         yield 'f', nf, st
                     elif ff in dc:
                         yield 'm', nf, st
 
         # step two run through anything left in the dc hash and yield
         # if we haven't already seen it
         ks = dc.keys()
         ks.sort()
         for k in ks:
             if not seen(k) and imatch(k):
                 yield 'm', k, None
 
     def status(self, files=None, match=util.always, list_ignored=False,
                list_clean=False):
         lookup, modified, added, unknown, ignored = [], [], [], [], []
         removed, deleted, clean = [], [], []
 
         for src, fn, st in self.statwalk(files, match, ignored=list_ignored):
             try:
                 type_, mode, size, time = self[fn]
             except KeyError:
                 if list_ignored and self.ignore(fn):
                     ignored.append(fn)
                 else:
                     unknown.append(fn)
                 continue
             if src == 'm':
                 nonexistent = True
                 if not st:
                     try:
                         st = os.lstat(self.wjoin(fn))
                     except OSError, inst:
                         if inst.errno != errno.ENOENT:
                             raise
                         st = None
                     # We need to re-check that it is a valid file
                     if st and self.supported_type(fn, st):
                         nonexistent = False
                 # XXX: what to do with file no longer present in the fs
                 # who are not removed in the dirstate ?
                 if nonexistent and type_ in "nm":
                     deleted.append(fn)
                     continue
             # check the common case first
             if type_ == 'n':
                 if not st:
                     st = os.lstat(self.wjoin(fn))
                 if size >= 0 and (size != st.st_size
                                   or (mode ^ st.st_mode) & 0100):
                     modified.append(fn)
                 elif time != int(st.st_mtime):
                     lookup.append(fn)
                 elif list_clean:
                     clean.append(fn)
             elif type_ == 'm':
                 modified.append(fn)
             elif type_ == 'a':
                 added.append(fn)
             elif type_ == 'r':
                 removed.append(fn)
 
         return (lookup, modified, added, removed, deleted, unknown, ignored,
                 clean)

mercurial/localrepo.py

@@ -1,1949 +1,1949 b''
 # 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')
     branchcache_features = ('unnamed',)
 
     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.path = os.path.join(path, ".hg")
         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)
 
         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 not self.tagscache:
             self.tagscache = {}
 
             def parsetag(line, context):
                 if not line:
                     return
                 s = l.split(" ", 1)
                 if len(s) != 2:
                     self.ui.warn(_("%s: cannot parse entry\n") % context)
                     return
                 node, key = s
                 key = util.tolocal(key.strip()) # stored in UTF-8
                 try:
                     bin_n = bin(node)
                 except TypeError:
                     self.ui.warn(_("%s: node '%s' is not well formed\n") %
                                  (context, node))
                     return
                 if bin_n not in self.changelog.nodemap:
                     self.ui.warn(_("%s: tag '%s' refers to unknown node\n") %
                                  (context, key))
                     return
                 self.tagscache[key] = bin_n
 
             # read the tags file from each head, ending with the tip,
             # and add each tag found to the map, with "newer" ones
             # taking precedence
             f = None
             for rev, node, fnode in self._hgtagsnodes():
                 f = (f and f.filectx(fnode) or
                      self.filectx('.hgtags', fileid=fnode))
                 count = 0
                 for l in f.data().splitlines():
                     count += 1
                     parsetag(l, _("%s, line %d") % (str(f), count))
 
             try:
                 f = self.opener("localtags")
                 count = 0
                 for l in f:
                     # localtags are stored in the local character set
                     # while the internal tag table is stored in UTF-8
                     l = util.fromlocal(l)
                     count += 1
                     parsetag(l, _("localtags, line %d") % count)
             except IOError:
                 pass
 
             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("branches.cache")
             lines = f.read().split('\n')
             f.close()
             features = lines.pop(0).strip()
             if not features.startswith('features: '):
                 raise ValueError(_('branch cache: no features specified'))
             features = features.split(' ', 1)[1].split()
             missing_features = []
             for feature in self.branchcache_features:
                 try:
                     features.remove(feature)
                 except ValueError, inst:
                     missing_features.append(feature)
             if missing_features:
                 raise ValueError(_('branch cache: missing features: %s')
                                  % ', '.join(missing_features))
             if features:
                 raise ValueError(_('branch cache: unknown features: %s')
                                  % ', '.join(features))
             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("branches.cache", "w")
             f.write(" features: %s\n" % ' '.join(self.branchcache_features))
             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)
 
     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 fn in self.manifest.read(self.changelog.read(node)[0]):
                 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
             for fn in fdict:
                 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.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)
 
             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.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/merge.py

@@ -1,501 +1,501 b''
 # merge.py - directory-level update/merge handling 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 errno, util, os, tempfile
 
 def filemerge(repo, fw, fo, wctx, mctx):
     """perform a 3-way merge in the working directory
 
     fw = filename in the working directory
     fo = filename in other parent
     wctx, mctx = working and merge changecontexts
     """
 
     def temp(prefix, ctx):
         pre = "%s~%s." % (os.path.basename(ctx.path()), prefix)
         (fd, name) = tempfile.mkstemp(prefix=pre)
         data = repo.wwritedata(ctx.path(), ctx.data())
         f = os.fdopen(fd, "wb")
         f.write(data)
         f.close()
         return name
 
     fcm = wctx.filectx(fw)
     fco = mctx.filectx(fo)
 
     if not fco.cmp(fcm.data()): # files identical?
         return None
 
     fca = fcm.ancestor(fco)
     if not fca:
         fca = repo.filectx(fw, fileid=nullrev)
     a = repo.wjoin(fw)
     b = temp("base", fca)
     c = temp("other", fco)
 
     if fw != fo:
         repo.ui.status(_("merging %s and %s\n") % (fw, fo))
     else:
         repo.ui.status(_("merging %s\n") % fw)
 
     repo.ui.debug(_("my %s other %s ancestor %s\n") % (fcm, fco, fca))
 
     cmd = (os.environ.get("HGMERGE") or repo.ui.config("ui", "merge")
            or "hgmerge")
     r = util.system('%s "%s" "%s" "%s"' % (cmd, a, b, c), cwd=repo.root,
                     environ={'HG_FILE': fw,
                              'HG_MY_NODE': str(wctx.parents()[0]),
                              'HG_OTHER_NODE': str(mctx)})
     if r:
         repo.ui.warn(_("merging %s failed!\n") % fw)
 
     os.unlink(b)
     os.unlink(c)
     return r
 
 def checkunknown(wctx, mctx):
     "check for collisions between unknown files and files in mctx"
     man = mctx.manifest()
     for f in wctx.unknown():
         if f in man:
             if mctx.filectx(f).cmp(wctx.filectx(f).data()):
                 raise util.Abort(_("untracked local file '%s' differs"\
                                    " from remote version") % f)
 
 def checkcollision(mctx):
     "check for case folding collisions in the destination context"
     folded = {}
     for fn in mctx.manifest():
         fold = fn.lower()
         if fold in folded:
             raise util.Abort(_("case-folding collision between %s and %s")
                              % (fn, folded[fold]))
         folded[fold] = fn
 
 def forgetremoved(wctx, mctx):
     """
     Forget removed files
 
     If we're jumping between revisions (as opposed to merging), and if
     neither the working directory nor the target rev has the file,
     then we need to remove it from the dirstate, to prevent the
     dirstate from listing the file when it is no longer in the
     manifest.
     """
 
     action = []
     man = mctx.manifest()
     for f in wctx.deleted() + wctx.removed():
         if f not in man:
             action.append((f, "f"))
 
     return action
 
 def findcopies(repo, m1, m2, ma, limit):
     """
     Find moves and copies between m1 and m2 back to limit linkrev
     """
 
     def findold(fctx):
         "find files that path was copied from, back to linkrev limit"
         old = {}
         orig = fctx.path()
         visit = [fctx]
         while visit:
             fc = visit.pop()
             if fc.path() != orig and fc.path() not in old:
                 old[fc.path()] = 1
             if fc.rev() < limit:
                 continue
             visit += fc.parents()
 
         old = old.keys()
         old.sort()
         return old
 
     def nonoverlap(d1, d2, d3):
         "Return list of elements in d1 not in d2 or d3"
         l = [d for d in d1 if d not in d3 and d not in d2]
         l.sort()
         return l
 
     def checkcopies(c, man):
         '''check possible copies for filectx c'''
         for of in findold(c):
             if of not in man:
                 return
             c2 = ctx(of, man[of])
             ca = c.ancestor(c2)
             if not ca: # unrelated
                 return
             if ca.path() == c.path() or ca.path() == c2.path():
                 fullcopy[c.path()] = of
                 if c == ca or c2 == ca: # no merge needed, ignore copy
                     return
                 copy[c.path()] = of
 
     def dirs(files):
         d = {}
         for f in files:
             d[os.path.dirname(f)] = True
         return d
 
     if not repo.ui.configbool("merge", "followcopies", True):
         return {}
 
     # avoid silly behavior for update from empty dir
     if not m1 or not m2 or not ma:
         return {}
 
     dcopies = repo.dirstate.copies()
     copy = {}
     fullcopy = {}
     u1 = nonoverlap(m1, m2, ma)
     u2 = nonoverlap(m2, m1, ma)
     ctx = util.cachefunc(lambda f, n: repo.filectx(f, fileid=n[:20]))
 
     for f in u1:
         checkcopies(ctx(dcopies.get(f, f), m1[f]), m2)
 
     for f in u2:
         checkcopies(ctx(f, m2[f]), m1)
 
     if not fullcopy or not repo.ui.configbool("merge", "followdirs", True):
         return copy
 
     # generate a directory move map
     d1, d2 = dirs(m1), dirs(m2)
     invalid = {}
     dirmove = {}
 
     for dst, src in fullcopy.items():
         dsrc, ddst = os.path.dirname(src), os.path.dirname(dst)
         if dsrc in invalid:
             continue
         elif (dsrc in d1 and ddst in d1) or (dsrc in d2 and ddst in d2):
             invalid[dsrc] = True
         elif dsrc in dirmove and dirmove[dsrc] != ddst:
             invalid[dsrc] = True
             del dirmove[dsrc]
         else:
             dirmove[dsrc + "/"] = ddst + "/"
 
     del d1, d2, invalid
 
     if not dirmove:
         return copy
 
     # check unaccounted nonoverlapping files
     for f in u1 + u2:
         if f not in fullcopy:
             for d in dirmove:
                 if f.startswith(d):
                     copy[f] = dirmove[d] + f[len(d):]
                     break
 
     return copy
 
 def manifestmerge(repo, p1, p2, pa, overwrite, partial):
     """
     Merge p1 and p2 with ancestor ma and generate merge action list
 
     overwrite = whether we clobber working files
     partial = function to filter file lists
     """
 
     repo.ui.note(_("resolving manifests\n"))
     repo.ui.debug(_(" overwrite %s partial %s\n") % (overwrite, bool(partial)))
     repo.ui.debug(_(" ancestor %s local %s remote %s\n") % (pa, p1, p2))
 
     m1 = p1.manifest()
     m2 = p2.manifest()
     ma = pa.manifest()
     backwards = (pa == p2)
     action = []
     copy = {}
 
     def fmerge(f, f2=None, fa=None):
         """merge flags"""
         if not f2:
             f2 = f
             fa = f
         a, b, c = ma.execf(fa), m1.execf(f), m2.execf(f2)
         if ((a^b) | (a^c)) ^ a:
             return 'x'
         a, b, c = ma.linkf(fa), m1.linkf(f), m2.linkf(f2)
         if ((a^b) | (a^c)) ^ a:
             return 'l'
         return ''
 
     def act(msg, m, f, *args):
         repo.ui.debug(" %s: %s -> %s\n" % (f, msg, m))
         action.append((f, m) + args)
 
     if not (backwards or overwrite):
         copy = findcopies(repo, m1, m2, ma, pa.rev())
     copied = dict.fromkeys(copy.values())
 
     # Compare manifests
     for f, n in m1.iteritems():
         if partial and not partial(f):
             continue
         if f in m2:
             # are files different?
             if n != m2[f]:
                 a = ma.get(f, nullid)
                 # are both different from the ancestor?
                 if not overwrite and n != a and m2[f] != a:
                     act("versions differ", "m", f, f, f, fmerge(f), False)
                 # are we clobbering?
                 # is remote's version newer?
                 # or are we going back in time and clean?
                 elif overwrite or m2[f] != a or (backwards and not n[20:]):
                     act("remote is newer", "g", f, m2.flags(f))
                 # local is newer, not overwrite, check mode bits
                 elif fmerge(f) != m1.flags(f):
                     act("update permissions", "e", f, m2.flags(f))
             # contents same, check mode bits
             elif m1.flags(f) != m2.flags(f):
                 if overwrite or fmerge(f) != m1.flags(f):
                     act("update permissions", "e", f, m2.flags(f))
         elif f in copied:
             continue
         elif f in copy:
             f2 = copy[f]
             if f2 not in m2: # directory rename
                 act("remote renamed directory to " + f2, "d",
                     f, None, f2, m1.flags(f))
             elif f2 in m1: # case 2 A,B/B/B
                 act("local copied to " + f2, "m",
                     f, f2, f, fmerge(f, f2, f2), False)
             else: # case 4,21 A/B/B
                 act("local moved to " + f2, "m",
                     f, f2, f, fmerge(f, f2, f2), False)
         elif f in ma:
             if n != ma[f] and not overwrite:
                 if repo.ui.prompt(
                     (_(" local changed %s which remote deleted\n") % f) +
                     _("(k)eep or (d)elete?"), _("[kd]"), _("k")) == _("d"):
                     act("prompt delete", "r", f)
             else:
                 act("other deleted", "r", f)
         else:
             # file is created on branch or in working directory
             if (overwrite and n[20:] != "u") or (backwards and not n[20:]):
                 act("remote deleted", "r", f)
 
     for f, n in m2.iteritems():
         if partial and not partial(f):
             continue
         if f in m1:
             continue
         if f in copied:
             continue
         if f in copy:
             f2 = copy[f]
             if f2 not in m1: # directory rename
                 act("local renamed directory to " + f2, "d",
                     None, f, f2, m2.flags(f))
             elif f2 in m2: # rename case 1, A/A,B/A
                 act("remote copied to " + f, "m",
                     f2, f, f, fmerge(f2, f, f2), False)
             else: # case 3,20 A/B/A
                 act("remote moved to " + f, "m",
                     f2, f, f, fmerge(f2, f, f2), True)
         elif f in ma:
             if overwrite or backwards:
                 act("recreating", "g", f, m2.flags(f))
             elif n != ma[f]:
                 if repo.ui.prompt(
                     (_("remote changed %s which local deleted\n") % f) +
                     _("(k)eep or (d)elete?"), _("[kd]"), _("k")) == _("k"):
                     act("prompt recreating", "g", f, m2.flags(f))
         else:
             act("remote created", "g", f, m2.flags(f))
 
     return action
 
 def applyupdates(repo, action, wctx, mctx):
     "apply the merge action list to the working directory"
 
     updated, merged, removed, unresolved = 0, 0, 0, 0
     action.sort()
     for a in action:
         f, m = a[:2]
         if f and f[0] == "/":
             continue
         if m == "r": # remove
             repo.ui.note(_("removing %s\n") % f)
             util.audit_path(f)
             try:
                 util.unlink(repo.wjoin(f))
             except OSError, inst:
                 if inst.errno != errno.ENOENT:
                     repo.ui.warn(_("update failed to remove %s: %s!\n") %
                                  (f, inst.strerror))
             removed += 1
         elif m == "m": # merge
             f2, fd, flags, move = a[2:]
             r = filemerge(repo, f, f2, wctx, mctx)
             if r > 0:
                 unresolved += 1
             else:
                 if r is None:
                     updated += 1
                 else:
                     merged += 1
                 if f != fd:
                     repo.ui.debug(_("copying %s to %s\n") % (f, fd))
                     repo.wwrite(fd, repo.wread(f), flags)
                     if move:
                         repo.ui.debug(_("removing %s\n") % f)
                         os.unlink(repo.wjoin(f))
             util.set_exec(repo.wjoin(fd), "x" in flags)
         elif m == "g": # get
             flags = a[2]
             repo.ui.note(_("getting %s\n") % f)
             t = mctx.filectx(f).data()
             repo.wwrite(f, t, flags)
             updated += 1
         elif m == "d": # directory rename
             f2, fd, flags = a[2:]
             if f:
                 repo.ui.note(_("moving %s to %s\n") % (f, fd))
                 t = wctx.filectx(f).data()
                 repo.wwrite(fd, t, flags)
                 util.unlink(repo.wjoin(f))
             if f2:
                 repo.ui.note(_("getting %s to %s\n") % (f2, fd))
                 t = mctx.filectx(f2).data()
                 repo.wwrite(fd, t, flags)
             updated += 1
         elif m == "e": # exec
             flags = a[2]
             util.set_exec(repo.wjoin(f), flags)
 
     return updated, merged, removed, unresolved
 
 def recordupdates(repo, action, branchmerge):
     "record merge actions to the dirstate"
 
     for a in action:
         f, m = a[:2]
         if m == "r": # remove
             if branchmerge:
                 repo.dirstate.update([f], 'r')
             else:
                 repo.dirstate.forget([f])
         elif m == "f": # forget
             repo.dirstate.forget([f])
         elif m == "g": # get
             if branchmerge:
                 repo.dirstate.update([f], 'n', st_mtime=-1)
             else:
                 repo.dirstate.update([f], 'n')
         elif m == "m": # merge
             f2, fd, flag, move = a[2:]
             if branchmerge:
                 # We've done a branch merge, mark this file as merged
                 # so that we properly record the merger later
                 repo.dirstate.update([fd], 'm')
                 if f != f2: # copy/rename
                     if move:
                         repo.dirstate.update([f], 'r')
                     if f != fd:
                         repo.dirstate.copy(f, fd)
                     else:
                         repo.dirstate.copy(f2, fd)
             else:
                 # We've update-merged a locally modified file, so
                 # we set the dirstate to emulate a normal checkout
                 # of that file some time in the past. Thus our
                 # merge will appear as a normal local file
                 # modification.
                 repo.dirstate.update([fd], 'n', st_size=-1, st_mtime=-1)
                 if move:
                     repo.dirstate.forget([f])
         elif m == "d": # directory rename
             f2, fd, flag = a[2:]
             if branchmerge:
                 repo.dirstate.update([fd], 'a')
                 if f:
                     repo.dirstate.update([f], 'r')
                     repo.dirstate.copy(f, fd)
                 if f2:
                     repo.dirstate.copy(f2, fd)
             else:
                 repo.dirstate.update([fd], 'n')
                 if f:
                     repo.dirstate.forget([f])
 
 def update(repo, node, branchmerge, force, partial, wlock):
     """
     Perform a merge between the working directory and the given node
 
     branchmerge = whether to merge between branches
     force = whether to force branch merging or file overwriting
     partial = a function to filter file lists (dirstate not updated)
     wlock = working dir lock, if already held
     """
 
-    if node is None:
-        node = "tip"
-
     if not wlock:
         wlock = repo.wlock()
 
+    wc = repo.workingctx()
+    if node is None:
+        # tip of current branch
+        node = repo.branchtags()[wc.branch()]
     overwrite = force and not branchmerge
     forcemerge = force and branchmerge
-    wc = repo.workingctx()
     pl = wc.parents()
     p1, p2 = pl[0], repo.changectx(node)
     pa = p1.ancestor(p2)
     fp1, fp2, xp1, xp2 = p1.node(), p2.node(), str(p1), str(p2)
 
     ### check phase
     if not overwrite and len(pl) > 1:
         raise util.Abort(_("outstanding uncommitted merges"))
     if pa == p1 or pa == p2: # is there a linear path from p1 to p2?
         if branchmerge:
             raise util.Abort(_("there is nothing to merge, just use "
                                "'hg update' or look at 'hg heads'"))
     elif not (overwrite or branchmerge):
         raise util.Abort(_("update spans branches, use 'hg merge' "
                            "or 'hg update -C' to lose changes"))
     if branchmerge and not forcemerge:
         if wc.files():
             raise util.Abort(_("outstanding uncommitted changes"))
 
     ### calculate phase
     action = []
     if not force:
         checkunknown(wc, p2)
     if not util.checkfolding(repo.path):
         checkcollision(p2)
     if not branchmerge:
         action += forgetremoved(wc, p2)
     action += manifestmerge(repo, wc, p2, pa, overwrite, partial)
 
     ### apply phase
     if not branchmerge: # just jump to the new rev
         fp1, fp2, xp1, xp2 = fp2, nullid, xp2, ''
     if not partial:
         repo.hook('preupdate', throw=True, parent1=xp1, parent2=xp2)
 
     stats = applyupdates(repo, action, wc, p2)
 
     if not partial:
         recordupdates(repo, action, branchmerge)
         repo.dirstate.setparents(fp1, fp2)
         repo.hook('update', parent1=xp1, parent2=xp2, error=stats[3])
         if not branchmerge:
             repo.opener("branch", "w").write(p2.branch() + "\n")
 
     return stats
 

tests/test-mq

@@ -1,379 +1,391 b''
 #!/bin/sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "mq=" >> $HGRCPATH
 
 echo % help
 hg help mq
 
 hg init a
 cd a
 echo a > a
 hg ci -Ama
 
 hg clone . ../k
 
 mkdir b
 echo z > b/z
 hg ci -Ama
 
 echo % qinit
 
 hg qinit
 
 cd ..
 hg init b
 
 echo % -R qinit
 
 hg -R b qinit
 
 hg init c
 
 echo % qinit -c
 
 hg --cwd c qinit -c
 hg -R c/.hg/patches st
 
 echo % qnew implies add
 
 hg -R c qnew test.patch
 hg -R c/.hg/patches st
 
 echo '% qinit; qinit -c'
 hg init d
 cd d
 hg qinit
 hg qinit -c
 # qinit -c should create both files if they don't exist
 echo '  .hgignore:'
 cat .hg/patches/.hgignore
 echo '  series:'
 cat .hg/patches/series
 hg qinit -c 2>&1 | sed -e 's/repository.*already/repository already/'
 cd ..
 
 echo '% qinit; <stuff>; qinit -c'
 hg init e
 cd e
 hg qnew A
 echo foo > foo
 hg add foo
 hg qrefresh
 hg qnew B
 echo >> foo
 hg qrefresh
 echo status >> .hg/patches/.hgignore
 echo bleh >> .hg/patches/.hgignore
 hg qinit -c
 hg -R .hg/patches status
 # qinit -c shouldn't touch these files if they already exist
 echo '  .hgignore:'
 cat .hg/patches/.hgignore
 echo '  series:'
 cat .hg/patches/series
 cd ..
 
 cd a
 
 echo % qnew -m
 
 hg qnew -m 'foo bar' test.patch
 cat .hg/patches/test.patch
 
 echo % qrefresh
 
 echo a >> a
 hg qrefresh
 sed -e "s/^\(diff -r \)\([a-f0-9]* \)/\1 x/" \
     -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
     -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/" .hg/patches/test.patch
 
+echo % empty qrefresh
+
+hg qrefresh -X a
+echo 'revision:'
+hg diff -r -2 -r -1
+echo 'patch:'
+cat .hg/patches/test.patch
+echo 'working dir diff:'
+hg diff --nodates -q
+# restore things
+hg qrefresh
+
 echo % qpop
 
 hg qpop
 
 echo % qpush
 
 hg qpush
 
 cd ..
 
 echo % pop/push outside repo
 
 hg -R a qpop
 hg -R a qpush
 
 cd a
 hg qnew test2.patch
 
 echo % qrefresh in subdir
 
 cd b
 echo a > a
 hg add a
 hg qrefresh
 
 echo % pop/push -a in subdir
 
 hg qpop -a
 hg --traceback qpush -a
 
 echo % qseries
 hg qseries
 hg qpop
 hg qseries -vs
 hg qpush
 
 echo % qapplied
 hg qapplied
 
 echo % qtop
 hg qtop
 
 echo % qprev
 hg qprev
 
 echo % qnext
 hg qnext
 
 echo % pop, qnext, qprev, qapplied
 hg qpop
 hg qnext
 hg qprev
 hg qapplied
 
 echo % commit should fail
 hg commit
 
 echo % push should fail
 hg push ../../k
 
 echo % qunapplied
 hg qunapplied
 
 echo % qpush/qpop with index
 hg qnew test1b.patch
 echo 1b > 1b
 hg add 1b
 hg qrefresh
 hg qpush 2
 hg qpop 0
 hg qpush test.patch+1
 hg qpush test.patch+2
 hg qpop test2.patch-1
 hg qpop test2.patch-2
 hg qpush test1b.patch+1
 
 echo % push should succeed
 hg qpop -a
 hg push ../../k
 
 echo % qpush/qpop error codes
 errorcode()
 {
     hg "$@" && echo "  $@ succeeds" || echo "  $@ fails"
 }
 
 # we want to start with some patches applied
 hg qpush -a
 echo "  % pops all patches and succeeds"
 errorcode qpop -a
 echo "  % does nothing and succeeds"
 errorcode qpop -a
 echo "  % fails - nothing else to pop"
 errorcode qpop
 echo "  % pushes a patch and succeeds"
 errorcode qpush
 echo "  % pops a patch and succeeds"
 errorcode qpop
 echo "  % pushes up to test1b.patch and succeeds"
 errorcode qpush test1b.patch
 echo "  % does nothing and succeeds"
 errorcode qpush test1b.patch
 echo "  % does nothing and succeeds"
 errorcode qpop test1b.patch
 echo "  % fails - can't push to this patch"
 errorcode qpush test.patch
 echo "  % fails - can't pop to this patch"
 errorcode qpop test2.patch
 echo "  % pops up to test.patch and succeeds"
 errorcode qpop test.patch
 echo "  % pushes all patches and succeeds"
 errorcode qpush -a
 echo "  % does nothing and succeeds"
 errorcode qpush -a
 echo "  % fails - nothing else to push"
 errorcode qpush
 echo "  % does nothing and succeeds"
 errorcode qpush test2.patch
 
 
 echo % strip
 cd ../../b
 echo x>x
 hg ci -Ama
 hg strip tip 2>&1 | sed 's/\(saving bundle to \).*/\1/'
 hg unbundle .hg/strip-backup/*
 
 echo '% cd b; hg qrefresh'
 hg init refresh
 cd refresh
 echo a > a
 hg ci -Ama -d'0 0'
 hg qnew -mfoo foo
 echo a >> a
 hg qrefresh
 mkdir b
 cd b
 echo f > f
 hg add f
 hg qrefresh
 sed -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
     -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/" ../.hg/patches/foo
 echo % hg qrefresh .
 hg qrefresh .
 sed -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
     -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/" ../.hg/patches/foo
 hg status
 
 echo % qpush failure
 cd ..
 hg qrefresh
 hg qnew -mbar bar
 echo foo > foo
 echo bar > bar
 hg add foo bar
 hg qrefresh
 hg qpop -a
 echo bar > foo
 hg qpush -a
 hg st
 
 cat >>$HGRCPATH <<EOF
 [diff]
 git = True
 EOF
 cd ..
 hg init git
 cd git
 hg qinit
 
 hg qnew -m'new file' new
 echo foo > new
 chmod +x new
 hg add new
 hg qrefresh
 sed -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
     -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/" .hg/patches/new
 
 hg qnew -m'copy file' copy
 hg cp new copy
 hg qrefresh
 sed -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
     -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/" .hg/patches/copy
 
 hg qpop
 hg qpush
 hg qdiff
 cat >>$HGRCPATH <<EOF
 [diff]
 git = False
 EOF
 hg qdiff --git
 
 cd ..
 hg init slow
 cd slow
 hg qinit
 echo foo > foo
 hg add foo
 hg ci -m 'add foo'
 hg qnew bar
 echo bar > bar
 hg add bar
 hg mv foo baz
 hg qrefresh --git
 hg up -C 0
 echo >> foo
 hg ci -m 'change foo'
 hg up -C 1
 hg qrefresh --git 2>&1 | grep -v 'saving bundle'
 cat .hg/patches/bar
 hg log -vC --template '{rev} {file_copies%filecopy}\n' -r .
 hg qrefresh --git
 cat .hg/patches/bar
 hg log -vC --template '{rev} {file_copies%filecopy}\n' -r .
 
 echo
 hg up -C 1
 echo >> foo
 hg ci -m 'change foo again'
 hg up -C 2
 hg mv bar quux
 hg mv baz bleh
 hg qrefresh --git 2>&1 | grep -v 'saving bundle'
 cat .hg/patches/bar
 hg log -vC --template '{rev} {file_copies%filecopy}\n' -r .
 hg mv quux fred
 hg mv bleh barney
 hg qrefresh --git
 cat .hg/patches/bar
 hg log -vC --template '{rev} {file_copies%filecopy}\n' -r .
 
 echo '% strip again'
 cd ..
 hg init strip
 cd strip
 touch foo
 hg add foo
 hg ci -m 'add foo' -d '0 0'
 echo >> foo
 hg ci -m 'change foo 1' -d '0 0'
 hg up -C 0
 echo 1 >> foo
 hg ci -m 'change foo 2' -d '0 0'
 HGMERGE=true hg merge
 hg ci -m merge -d '0 0'
 hg log
 hg strip 1 2>&1 | sed 's/\(saving bundle to \).*/\1/'
 hg log
 cd ..
 
 echo '% qclone'
 qlog()
 {
     echo 'main repo:'
     hg log --template '    rev {rev}: {desc}\n'
     echo 'patch repo:'
     hg -R .hg/patches log --template '    rev {rev}: {desc}\n'
 }
 hg init qclonesource
 cd qclonesource
 echo foo > foo
 hg add foo
 hg ci -m 'add foo'
 hg qinit -c
 hg qnew patch1
 echo bar >> foo
 hg qrefresh -m 'change foo'
 hg qci -m checkpoint
 qlog
 cd ..
 
 # repo with patches applied
 hg qclone qclonesource qclonedest
 cd qclonedest
 qlog
 cd ..
 
 # repo with patches unapplied
 cd qclonesource
 hg qpop -a
 qlog
 cd ..
 hg qclone qclonesource qclonedest2
 cd qclonedest2
 qlog
 cd ..
 

tests/test-mq.out

@@ -1,413 +1,424 b''
 % help
 mq extension - patch management and development
 
 This extension lets you work with a stack of patches in a Mercurial
 repository.  It manages two stacks of patches - all known patches, and
 applied patches (subset of known patches).
 
 Known patches are represented as patch files in the .hg/patches
 directory.  Applied patches are both patch files and changesets.
 
 Common tasks (use "hg help command" for more details):
 
 prepare repository to work with patches   qinit
 create new patch                          qnew
 import existing patch                     qimport
 
 print patch series                        qseries
 print applied patches                     qapplied
 print name of top applied patch           qtop
 
 add known patch to applied stack          qpush
 remove patch from applied stack           qpop
 refresh contents of top applied patch     qrefresh
 
 list of commands (use "hg help -v mq" to show aliases and global options):
 
  qapplied     print the patches already applied
  qclone       clone main and patch repository at same time
  qcommit      commit changes in the queue repository
  qdelete      remove patches from queue
  qdiff        diff of the current patch
  qfold        fold the named patches into the current patch
  qguard       set or print guards for a patch
  qheader      Print the header of the topmost or specified patch
  qimport      import a patch
  qinit        init a new queue repository
  qnew         create a new patch
  qnext        print the name of the next patch
  qpop         pop the current patch off the stack
  qprev        print the name of the previous patch
  qpush        push the next patch onto the stack
  qrefresh     update the current patch
  qrename      rename a patch
  qrestore     restore the queue state saved by a rev
  qsave        save current queue state
  qselect      set or print guarded patches to push
  qseries      print the entire series file
  qtop         print the name of the current patch
  qunapplied   print the patches not yet applied
  strip        strip a revision and all later revs on the same branch
 adding a
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 adding b/z
 % qinit
 % -R qinit
 % qinit -c
 A .hgignore
 A series
 % qnew implies add
 A .hgignore
 A series
 A test.patch
 % qinit; qinit -c
   .hgignore:
 syntax: glob
 status
 guards
   series:
 abort: repository already exists!
 % qinit; <stuff>; qinit -c
 adding A
 adding B
 A .hgignore
 A A
 A B
 A series
   .hgignore:
 status
 bleh
   series:
 A
 B
 % qnew -m
 foo bar
 % qrefresh
 foo bar
 
 diff -r  xa
 --- a/a
 +++ b/a
 @@ -1,1 +1,2 @@ a
  a
 +a
+% empty qrefresh
+revision:
+patch:
+foo bar
+
+working dir diff:
+--- a/a
++++ b/a
+@@ -1,1 +1,2 @@ a
+ a
++a
 % qpop
 Patch queue now empty
 % qpush
 applying test.patch
 Now at: test.patch
 % pop/push outside repo
 Patch queue now empty
 applying test.patch
 Now at: test.patch
 % qrefresh in subdir
 % pop/push -a in subdir
 Patch queue now empty
 applying test.patch
 applying test2.patch
 Now at: test2.patch
 % qseries
 test.patch
 test2.patch
 Now at: test.patch
 0 A test.patch: foo bar
 1 U test2.patch: 
 applying test2.patch
 Now at: test2.patch
 % qapplied
 test.patch
 test2.patch
 % qtop
 test2.patch
 % qprev
 test.patch
 % qnext
 All patches applied
 % pop, qnext, qprev, qapplied
 Now at: test.patch
 test2.patch
 Only one patch applied
 test.patch
 % commit should fail
 abort: cannot commit over an applied mq patch
 % push should fail
 pushing to ../../k
 abort: source has mq patches applied
 % qunapplied
 test2.patch
 % qpush/qpop with index
 applying test2.patch
 Now at: test2.patch
 Now at: test.patch
 applying test1b.patch
 Now at: test1b.patch
 applying test2.patch
 Now at: test2.patch
 Now at: test1b.patch
 Now at: test.patch
 applying test1b.patch
 applying test2.patch
 Now at: test2.patch
 % push should succeed
 Patch queue now empty
 pushing to ../../k
 searching for changes
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files
 % qpush/qpop error codes
 applying test.patch
 applying test1b.patch
 applying test2.patch
 Now at: test2.patch
   % pops all patches and succeeds
 Patch queue now empty
   qpop -a succeeds
   % does nothing and succeeds
 no patches applied
   qpop -a succeeds
   % fails - nothing else to pop
 no patches applied
   qpop fails
   % pushes a patch and succeeds
 applying test.patch
 Now at: test.patch
   qpush succeeds
   % pops a patch and succeeds
 Patch queue now empty
   qpop succeeds
   % pushes up to test1b.patch and succeeds
 applying test.patch
 applying test1b.patch
 Now at: test1b.patch
   qpush test1b.patch succeeds
   % does nothing and succeeds
 qpush: test1b.patch is already at the top
   qpush test1b.patch succeeds
   % does nothing and succeeds
 qpop: test1b.patch is already at the top
   qpop test1b.patch succeeds
   % fails - can't push to this patch
 abort: cannot push to a previous patch: test.patch
   qpush test.patch fails
   % fails - can't pop to this patch
 abort: patch test2.patch is not applied
   qpop test2.patch fails
   % pops up to test.patch and succeeds
 Now at: test.patch
   qpop test.patch succeeds
   % pushes all patches and succeeds
 applying test1b.patch
 applying test2.patch
 Now at: test2.patch
   qpush -a succeeds
   % does nothing and succeeds
 all patches are currently applied
   qpush -a succeeds
   % fails - nothing else to push
 patch series already fully applied
   qpush fails
   % does nothing and succeeds
 all patches are currently applied
   qpush test2.patch succeeds
 % strip
 adding x
 0 files updated, 0 files merged, 1 files removed, 0 files unresolved
 saving bundle to 
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files
 (run 'hg update' to get a working copy)
 % cd b; hg qrefresh
 adding a
 foo
 
 diff -r cb9a9f314b8b a
 --- a/a
 +++ b/a
 @@ -1,1 +1,2 @@ a
  a
 +a
 diff -r cb9a9f314b8b b/f
 --- /dev/null
 +++ b/b/f
 @@ -0,0 +1,1 @@
 +f
 % hg qrefresh .
 foo
 
 diff -r cb9a9f314b8b b/f
 --- /dev/null
 +++ b/b/f
 @@ -0,0 +1,1 @@
 +f
 M a
 % qpush failure
 Patch queue now empty
 applying foo
 applying bar
 1 out of 1 hunk ignored -- saving rejects to file foo.rej
 patch failed, unable to continue (try -v)
 patch failed, rejects left in working dir
 Errors during apply, please fix and refresh bar
 ? foo
 ? foo.rej
 new file
 
 diff --git a/new b/new
 new file mode 100755
 --- /dev/null
 +++ b/new
 @@ -0,0 +1,1 @@
 +foo
 copy file
 
 diff --git a/new b/copy
 copy from new
 copy to copy
 Now at: new
 applying copy
 Now at: copy
 diff --git a/new b/copy
 copy from new
 copy to copy
 diff --git a/new b/copy
 copy from new
 copy to copy
 1 files updated, 0 files merged, 2 files removed, 0 files unresolved
 2 files updated, 0 files merged, 1 files removed, 0 files unresolved
 adding branch
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files
 (run 'hg update' to get a working copy)
 Patch queue now empty
 applying bar
 Now at: bar
 diff --git a/bar b/bar
 new file mode 100644
 --- /dev/null
 +++ b/bar
 @@ -0,0 +1,1 @@
 +bar
 diff --git a/foo b/baz
 rename from foo
 rename to baz
 2 baz (foo)
 diff --git a/bar b/bar
 new file mode 100644
 --- /dev/null
 +++ b/bar
 @@ -0,0 +1,1 @@
 +bar
 diff --git a/foo b/baz
 rename from foo
 rename to baz
 2 baz (foo)
 
 1 files updated, 0 files merged, 2 files removed, 0 files unresolved
 2 files updated, 0 files merged, 1 files removed, 0 files unresolved
 adding branch
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files
 (run 'hg update' to get a working copy)
 Patch queue now empty
 applying bar
 Now at: bar
 diff --git a/foo b/bleh
 rename from foo
 rename to bleh
 diff --git a/quux b/quux
 new file mode 100644
 --- /dev/null
 +++ b/quux
 @@ -0,0 +1,1 @@
 +bar
 3 bleh (foo)
 diff --git a/foo b/barney
 rename from foo
 rename to barney
 diff --git a/fred b/fred
 new file mode 100644
 --- /dev/null
 +++ b/fred
 @@ -0,0 +1,1 @@
 +bar
 3 barney (foo)
 % strip again
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 merging foo
 0 files updated, 1 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 changeset:   3:99615015637b
 tag:         tip
 parent:      2:20cbbe65cff7
 parent:      1:d2871fc282d4
 user:        test
 date:        Thu Jan 01 00:00:00 1970 +0000
 summary:     merge
 
 changeset:   2:20cbbe65cff7
 parent:      0:53245c60e682
 user:        test
 date:        Thu Jan 01 00:00:00 1970 +0000
 summary:     change foo 2
 
 changeset:   1:d2871fc282d4
 user:        test
 date:        Thu Jan 01 00:00:00 1970 +0000
 summary:     change foo 1
 
 changeset:   0:53245c60e682
 user:        test
 date:        Thu Jan 01 00:00:00 1970 +0000
 summary:     add foo
 
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 saving bundle to 
 saving bundle to 
 adding branch
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files
 (run 'hg update' to get a working copy)
 changeset:   1:20cbbe65cff7
 tag:         tip
 user:        test
 date:        Thu Jan 01 00:00:00 1970 +0000
 summary:     change foo 2
 
 changeset:   0:53245c60e682
 user:        test
 date:        Thu Jan 01 00:00:00 1970 +0000
 summary:     add foo
 
 % qclone
 main repo:
     rev 1: change foo
     rev 0: add foo
 patch repo:
     rev 0: checkpoint
 3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 main repo:
     rev 0: add foo
 patch repo:
     rev 0: checkpoint
 Patch queue now empty
 main repo:
     rev 0: add foo
 patch repo:
     rev 0: checkpoint
 3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 main repo:
     rev 0: add foo
 patch repo:
     rev 0: checkpoint

tests/test-newbranch

@@ -1,65 +1,73 b''
 #!/bin/sh
 
 hg init t
 cd t
 hg branches
 
 echo foo > a
 hg add a
 hg ci -m "initial" -d "1000000 0"
 hg branch foo
 hg branch
 hg ci -m "add branch name" -d "1000000 0"
 hg branch bar
 hg ci -m "change branch name" -d "1000000 0"
 hg branch ""
 hg ci -m "clear branch name" -d "1000000 0"
 
 hg co foo
 hg branch
 echo bleah > a
 hg ci -m "modify a branch" -d "1000000 0"
 
 hg merge
 hg branch
 hg ci -m "merge" -d "1000000 0"
 hg log
 
 hg branches
 hg branches -q
 
 echo % test for invalid branch cache
 hg rollback
 cp .hg/branches.cache .hg/bc-invalid
 hg log -r foo
 cp .hg/bc-invalid .hg/branches.cache
 hg --debug log -r foo
 rm .hg/branches.cache
 echo corrupted > .hg/branches.cache
 hg log -qr foo
 cat .hg/branches.cache
 
 echo % test for different branch cache features
 echo '4909a3732169c0c20011c4f4b8fdff4e3d89b23f 4' > .hg/branches.cache
 hg branches --debug
 echo ' features: unnamed dummy foo bar' > .hg/branches.cache
 hg branches --debug
 echo ' features: dummy' > .hg/branches.cache
 hg branches --debug
 
 echo % test old hg reading branch cache with feature list
 python << EOF
 import binascii
 f = file('.hg/branches.cache')
 lines = f.read().split('\n')
 f.close()
 firstline = lines[0]
 last, lrev = lines.pop(0).rstrip().split(" ", 1)
 try:
     last, lrev = binascii.unhexlify(last), int(lrev)
 except ValueError, inst:
     if str(inst) == "invalid literal for int():%s" % firstline:
         print "ValueError raised correctly, good."
     else:
         print "ValueError: %s" % inst
 EOF
+
+echo % update with no arguments: tipmost revision of the current branch
+hg up -q -C 0
+hg up -q
+hg id
+hg up -q 1
+hg up -q
+hg id

tests/test-newbranch.out

@@ -1,96 +1,99 b''
 foo
 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 foo
 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 foo
 changeset:   5:5f8fb06e083e
 branch:      foo
 tag:         tip
 parent:      4:4909a3732169
 parent:      3:bf1bc2f45e83
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     merge
 
 changeset:   4:4909a3732169
 branch:      foo
 parent:      1:b699b1cec9c2
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     modify a branch
 
 changeset:   3:bf1bc2f45e83
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     clear branch name
 
 changeset:   2:67ec16bde7f1
 branch:      bar
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     change branch name
 
 changeset:   1:b699b1cec9c2
 branch:      foo
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     add branch name
 
 changeset:   0:be8523e69bf8
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     initial
 
 foo                            5:5f8fb06e083e
                                3:bf1bc2f45e83
 bar                            2:67ec16bde7f1
 foo
 
 bar
 % test for invalid branch cache
 rolling back last transaction
 changeset:   4:4909a3732169
 branch:      foo
 tag:         tip
 parent:      1:b699b1cec9c2
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     modify a branch
 
 Invalid branch cache: unknown tip
 changeset:   4:4909a3732169c0c20011c4f4b8fdff4e3d89b23f
 branch:      foo
 tag:         tip
 parent:      1:b699b1cec9c2966b3700de4fef0dc123cd754c31
 parent:      -1:0000000000000000000000000000000000000000
 manifest:    4:d01b250baaa05909152f7ae07d7a649deea0df9a
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 files:       a
 extra:       branch=foo
 description:
 modify a branch
 
 
 4:4909a3732169
  features: unnamed
 4909a3732169c0c20011c4f4b8fdff4e3d89b23f 4
 bf1bc2f45e834c75404d0ddab57d53beab56e2f8 
 4909a3732169c0c20011c4f4b8fdff4e3d89b23f foo
 67ec16bde7f1575d523313b9bca000f6a6f12dca bar
 % test for different branch cache features
 branch cache: no features specified
 foo                            4:4909a3732169c0c20011c4f4b8fdff4e3d89b23f
                                3:bf1bc2f45e834c75404d0ddab57d53beab56e2f8
 bar                            2:67ec16bde7f1575d523313b9bca000f6a6f12dca
 branch cache: unknown features: dummy, foo, bar
 foo                            4:4909a3732169c0c20011c4f4b8fdff4e3d89b23f
                                3:bf1bc2f45e834c75404d0ddab57d53beab56e2f8
 bar                            2:67ec16bde7f1575d523313b9bca000f6a6f12dca
 branch cache: missing features: unnamed
 foo                            4:4909a3732169c0c20011c4f4b8fdff4e3d89b23f
                                3:bf1bc2f45e834c75404d0ddab57d53beab56e2f8
 bar                            2:67ec16bde7f1575d523313b9bca000f6a6f12dca
 % test old hg reading branch cache with feature list
 ValueError raised correctly, good.
+% update with no arguments: tipmost revision of the current branch
+bf1bc2f45e83
+4909a3732169 (foo) tip