Never apply string formatting to generated errors with util.Abort.

Otherwise error messages containing % chars yield errors or worse.
Fixed (hopefully) all users of util.Abort.

hgext/mq.py

@@ -1,2007 +1,2007 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.demandload import *
 from mercurial.i18n import gettext as _
 from mercurial import commands
 demandload(globals(), "os sys re struct traceback errno bz2")
 demandload(globals(), "mercurial:cmdutil,hg,patch,revlog,ui,util")
 
 commands.norepo += " qclone qversion"
 
 class statusentry:
     def __init__(self, rev, name=None):
         if not name:
             fields = rev.split(':')
             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:
                 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], ' '.join(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)
 
         c = repo.changelog.read(rev)
         ret = hg.merge(repo, rev, wlock=wlock)
         if ret:
             raise util.Abort(_("update returned %d") % ret)
         n = repo.commit(None, c[4], c[1], 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'''
         try:
             (files, fuzz) = patch.patch(patchfile, self.ui, strip=1,
                                         cwd=repo.root)
         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, [], 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, keep=False):
         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)
 
         if not keep:
             r = self.qrepo()
             if r:
                 r.remove(realpatches, True)
             else:
                 os.unlink(self.join(patch))
 
         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 range(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)
             # TODO, exclusive open
             f = open(name, "wb")
             try:
                 f.write("HG10")
                 z = bz2.BZ2Compressor(9)
                 while 1:
                     chunk = cg.read(4096)
                     if not chunk:
                         break
                     f.write(z.compress(chunk))
                 f.write(z.flush())
             except:
                 os.unlink(name)
                 raise
             f.close()
             return name
 
         def stripall(rev, revnum):
             cl = repo.changelog
             c = cl.read(rev)
             mm = repo.manifest.read(c[0])
             seen = {}
 
             for x in xrange(revnum, cl.count()):
                 c = cl.read(cl.node(x))
                 for f in c[3]:
                     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 and chlog.rev(pp[1]) > revnum:
                     if pp[1] not in seen:
                         heads.append(pp[1])
                 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(rev, revnum)
 
         change = chlog.read(rev)
         repo.manifest.strip(repo.manifest.rev(change[0]), revnum)
         chlog.strip(revnum, revnum)
         if saveheads:
             self.ui.status("adding branch\n")
             commands.unbundle(self.ui, repo, 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()-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.rsplit('-', 1)
                 if len(minus) > 1:
                     res = partial_name(minus[0])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(minus[1] or 1)
                         except(ValueError, OverflowError):
                             pass
                         else:
                             if i - off >= 0:
                                 return self.series[i - off]
                 plus = patch.rsplit('+', 1)
                 if len(plus) > 1:
                     res = partial_name(plus[0])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(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)
         if patch and self.isapplied(patch):
             self.ui.warn(_("patch %s is already applied\n") % patch)
             sys.exit(1)
         if self.series_end() == len(self.series):
             self.ui.warn(_("patch series fully applied\n"))
             sys.exit(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)
             try:
                 repo.wfile(f, "w").write(t)
             except IOError:
                 try:
                     os.makedirs(os.path.dirname(repo.wjoin(f)))
                 except OSError, err:
                     if err.errno != errno.EEXIST: raise
                 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:
             self.ui.warn(_("no patches applied\n"))
             sys.exit(1)
 
         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: 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)
         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 range(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)
 
         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]
             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 = list(util.unique(mm))
             r = list(util.unique(dd))
             a = list(util.unique(aa))
             filelist = filter(matchfn, util.unique(m + r + a))
             patch.diff(repo, patchparent, files=filelist, match=matchfn,
                        fp=patchf, changes=(m, a, r, [], u),
                        opts=self.diffopts())
             patchf.close()
 
             changes = repo.changelog.read(tip)
             repo.dirstate.setparents(*cparents)
             copies = [(f, repo.dirstate.copied(f)) for f in a]
             repo.dirstate.update(a, 'a')
             for dst, src in copies:
                 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 range(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)
             self.applied[-1] = statusentry(revlog.hex(n), patchfn)
             self.applied_dirty = 1
         else:
             self.printdiff(repo, patchparent, fp=patchf)
             patchf.close()
             self.pop(repo, force=True, wlock=wlock)
             self.push(repo, force=True, wlock=wlock)
 
     def init(self, repo, create=False):
         if os.path.isdir(self.path):
             raise util.Abort(_("patch queue directory already exists"))
         os.mkdir(self.path)
         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, summary=False):
         start = self.series_end(all_patches=True)
         if not missing:
             for i in range(len(self.series)):
                 patch = self.series[i]
                 if self.ui.verbose:
                     if i < start:
                         status = 'A'
                     elif self.pushable(i)[0]:
                         status = 'U'
                     else:
                         status = 'G'
                     self.ui.write('%d %s ' % (i, status))
                 if summary:
                     msg = self.readheaders(patch)[0]
                     msg = msg and ': ' + msg[0] or ': '
                 else:
                     msg = ''
                 self.ui.write('%s%s\n' % (patch, msg))
         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:
                 if self.ui.verbose:
                     self.ui.write("D ")
                 self.ui.write("%s\n" % 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)
                 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 qapplied(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:
             end = len(self.applied)
         else:
             end = self.series.index(patch) + 1
         for x in xrange(end):
             p = self.appliedname(x)
             self.ui.write("%s\n" % p)
 
     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 top(self, repo):
         if len(self.applied):
             p = self.appliedname(-1)
             self.ui.write(p + '\n')
         else:
             self.ui.write("No patches applied\n")
             return 1
 
     def next(self, repo):
         end = self.series_end()
         if end == len(self.series):
             self.ui.write("All patches applied\n")
             return 1
         else:
             p = self.series[end]
             if self.ui.verbose:
                 self.ui.write("%d " % self.series.index(p))
             self.ui.write(p + '\n')
 
     def prev(self, repo):
         if len(self.applied) > 1:
             p = self.appliedname(-2)
             self.ui.write(p + '\n')
         elif len(self.applied) == 1:
             self.ui.write("Only one patch applied\n")
             return 1
         else:
             self.ui.write("No patches applied\n")
             return 1
 
     def qimport(self, repo, files, patch=None, existing=None, force=None):
         if len(files) > 1 and patch:
             raise util.Abort(_('option "-n" not valid when importing multiple '
                                'files'))
         i = 0
         added = []
         for filename in files:
             if existing:
                 if not patch:
                     patch = filename
                 if not os.path.isfile(self.join(patch)):
                     raise util.Abort(_("patch %s does not exist") % patch)
             else:
                 try:
                     text = file(filename).read()
                 except IOError:
                     raise util.Abort(_("unable to read %s") % patch)
                 if not patch:
                     patch = os.path.split(filename)[1]
                 if not force and os.path.exists(self.join(patch)):
                     raise util.Abort(_('patch "%s" already exists') % patch)
                 patchf = self.opener(patch, "w")
                 patchf.write(text)
             if patch in self.series:
                 raise util.Abort(_('patch %s is already in the series file')
                                  % patch)
             index = self.full_series_end() + i
             self.full_series[index:index] = [patch]
             self.parse_series()
             self.ui.warn("adding %s to series file\n" % patch)
             i += 1
             added.append(patch)
             patch = None
         self.series_dirty = 1
         qrepo = self.qrepo()
         if qrepo:
             qrepo.add(added)
 
 def delete(ui, repo, patch, *patches, **opts):
     """remove patches from queue
 
     The patches must not be applied.
     With -k, the patch files are preserved in the patch directory."""
     q = repo.mq
     q.delete(repo, (patch,) + patches, keep=opts.get('keep'))
     q.save_dirty()
     return 0
 
 def applied(ui, repo, patch=None, **opts):
     """print the patches already applied"""
     repo.mq.qapplied(repo, patch)
     return 0
 
 def unapplied(ui, repo, patch=None, **opts):
     """print the patches not yet applied"""
     for i, p in repo.mq.unapplied(repo, patch):
         if ui.verbose:
             ui.write("%d " % i)
         ui.write("%s\n" % p)
 
 def qimport(ui, repo, *filename, **opts):
     """import a patch"""
     q = repo.mq
     q.qimport(repo, filename, patch=opts['name'],
               existing=opts['existing'], force=opts['force'])
     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:
         fp = r.wopener('.hgignore', 'w')
         print >> fp, 'syntax: glob'
         print >> fp, 'status'
         fp.close()
         r.wopener('series', 'w').close()
         r.add(['.hgignore', 'series'])
     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():
         reposetup(ui, sr)
         if sr.mq.applied:
             qbase = revlog.bin(sr.mq.applied[0].rev)
             if not hg.islocal(dest):
                 destrev = sr.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'))
             reposetup(ui, dr)
             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"""
     return repo.mq.top(repo)
 
 def next(ui, repo, **opts):
     """print the name of the next patch"""
     return repo.mq.next(repo)
 
 def prev(ui, repo, **opts):
     """print the name of the previous patch"""
     return repo.mq.prev(repo)
 
 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.
     """
     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\n'))
+        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, keep=opts['keep'])
     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']:
         q.set_guards(q.find_series(patch), 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']:
         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
     q.pop(repo, patch, force=opts['force'], update=localupdate, all=opts['all'])
     q.save_dirty()
     return 0
 
 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 name in q.series:
         raise util.Abort(_('A patch named %s already exists in the series file') % name)
 
     absdest = q.join(name)
     if os.path.exists(absdest):
         raise util.Abort(_('%s already exists') % absdest)
     
     if patch:
         patch = q.lookup(patch)
     else:
         if not q.applied:
             ui.write(_('No patches applied\n'))
             return
         patch = q.lookup('qtip')
 
     if ui.verbose:
         ui.write('Renaming %s to %s\n' % (patch, name))
     i = q.find_series(patch)
     q.full_series[i] = name
     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'
     repo.mq.strip(repo, rev, backup=backup)
     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:
                 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
 
     if repo.local():
         repo.__class__ = mqrepo
         repo.mq = queue(ui, repo.join(""))
 
 cmdtable = {
     "qapplied": (applied, [], 'hg qapplied [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,
                [('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'))],
           'hg qdelete [-k] PATCH'),
     'qfold':
         (fold,
          [('e', 'edit', None, _('edit patch header')),
           ('k', 'keep', None, _('keep folded patch files')),
           ('m', 'message', '', _('set patch header to <text>')),
           ('l', 'logfile', '', _('set patch header to contents of <file>'))],
          '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')],
          'hg qimport [-e] [-n NAME] [-f] FILE...'),
     "^qinit":
         (init,
          [('c', 'create-repo', None, 'create queue repository')],
          'hg qinit [-c]'),
     "qnew":
         (new,
          [('e', 'edit', None, _('edit commit message')),
           ('m', 'message', '', _('use <text> as commit message')),
           ('l', 'logfile', '', _('read the commit message from <file>')),
           ('f', 'force', None, _('import uncommitted changes into patch'))],
          'hg qnew [-e] [-m TEXT] [-l FILE] [-f] PATCH'),
     "qnext": (next, [], 'hg qnext'),
     "qprev": (prev, [], 'hg qprev'),
     "^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')),
           ('m', 'message', '', _('change commit message with <text>')),
           ('l', 'logfile', '', _('change commit message with <file> content')),
           ('s', 'short', None, 'short refresh'),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          '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,
          [('m', 'message', '', _('use <text> as commit message')),
           ('l', 'logfile', '', _('read the commit message from <file>')),
           ('c', 'copy', None, 'copy patch directory'),
           ('n', 'name', '', 'copy directory name'),
           ('e', 'empty', None, 'clear queue status file'),
           ('f', 'force', None, 'force copy')],
          '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'),
           ('s', 'summary', None, _('print first line of patch header'))],
          'hg qseries [-m]'),
     "^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, [], 'hg qtop'),
     "qunapplied": (unapplied, [], 'hg qunapplied [PATCH]'),
 }

mercurial/cmdutil.py

@@ -1,145 +1,145 b''
 # cmdutil.py - help for command processing in 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 demandload import demandload
 from node import *
 from i18n import gettext as _
 demandload(globals(), 'mdiff util')
 demandload(globals(), 'os sys')
 
 def make_filename(repo, pat, node,
                   total=None, seqno=None, revwidth=None, pathname=None):
     node_expander = {
         'H': lambda: hex(node),
         'R': lambda: str(repo.changelog.rev(node)),
         'h': lambda: short(node),
         }
     expander = {
         '%': lambda: '%',
         'b': lambda: os.path.basename(repo.root),
         }
 
     try:
         if node:
             expander.update(node_expander)
         if node and revwidth is not None:
             expander['r'] = (lambda:
                     str(repo.changelog.rev(node)).zfill(revwidth))
         if total is not None:
             expander['N'] = lambda: str(total)
         if seqno is not None:
             expander['n'] = lambda: str(seqno)
         if total is not None and seqno is not None:
             expander['n'] = lambda:str(seqno).zfill(len(str(total)))
         if pathname is not None:
             expander['s'] = lambda: os.path.basename(pathname)
             expander['d'] = lambda: os.path.dirname(pathname) or '.'
             expander['p'] = lambda: pathname
 
         newname = []
         patlen = len(pat)
         i = 0
         while i < patlen:
             c = pat[i]
             if c == '%':
                 i += 1
                 c = pat[i]
                 c = expander[c]()
             newname.append(c)
             i += 1
         return ''.join(newname)
     except KeyError, inst:
-        raise util.Abort(_("invalid format spec '%%%s' in output file name"),
-                    inst.args[0])
+        raise util.Abort(_("invalid format spec '%%%s' in output file name") %
+                         inst.args[0])
 
 def make_file(repo, pat, node=None,
               total=None, seqno=None, revwidth=None, mode='wb', pathname=None):
     if not pat or pat == '-':
         return 'w' in mode and sys.stdout or sys.stdin
     if hasattr(pat, 'write') and 'w' in mode:
         return pat
     if hasattr(pat, 'read') and 'r' in mode:
         return pat
     return open(make_filename(repo, pat, node, total, seqno, revwidth,
                               pathname),
                 mode)
 
 def matchpats(repo, pats=[], opts={}, head=''):
     cwd = repo.getcwd()
     if not pats and cwd:
         opts['include'] = [os.path.join(cwd, i)
                            for i in opts.get('include', [])]
         opts['exclude'] = [os.path.join(cwd, x)
                            for x in opts.get('exclude', [])]
         cwd = ''
     return util.cmdmatcher(repo.root, cwd, pats or ['.'], opts.get('include'),
                            opts.get('exclude'), head)
 
 def makewalk(repo, pats=[], opts={}, node=None, head='', badmatch=None):
     files, matchfn, anypats = matchpats(repo, pats, opts, head)
     exact = dict(zip(files, files))
     def walk():
         for src, fn in repo.walk(node=node, files=files, match=matchfn,
                                  badmatch=badmatch):
             yield src, fn, util.pathto(repo.getcwd(), fn), fn in exact
     return files, matchfn, walk()
 
 def walk(repo, pats=[], opts={}, node=None, head='', badmatch=None):
     files, matchfn, results = makewalk(repo, pats, opts, node, head, badmatch)
     for r in results:
         yield r
 
 def findrenames(repo, added=None, removed=None, threshold=0.5):
     if added is None or removed is None:
         added, removed = repo.status()[1:3]
     changes = repo.changelog.read(repo.dirstate.parents()[0])
     mf = repo.manifest.read(changes[0])
     for a in added:
         aa = repo.wread(a)
         bestscore, bestname = None, None
         for r in removed:
             rr = repo.file(r).read(mf[r])
             delta = mdiff.textdiff(aa, rr)
             if len(delta) < len(aa):
                 myscore = 1.0 - (float(len(delta)) / len(aa))
                 if bestscore is None or myscore > bestscore:
                     bestscore, bestname = myscore, r
         if bestname and bestscore >= threshold:
             yield bestname, a, bestscore
 
 def addremove(repo, pats=[], opts={}, wlock=None, dry_run=None,
               similarity=None):
     if dry_run is None:
         dry_run = opts.get('dry_run')
     if similarity is None:
         similarity = float(opts.get('similarity') or 0)
     add, remove = [], []
     mapping = {}
     for src, abs, rel, exact in walk(repo, pats, opts):
         if src == 'f' and repo.dirstate.state(abs) == '?':
             add.append(abs)
             mapping[abs] = rel, exact
             if repo.ui.verbose or not exact:
                 repo.ui.status(_('adding %s\n') % ((pats and rel) or abs))
         if repo.dirstate.state(abs) != 'r' and not os.path.exists(rel):
             remove.append(abs)
             mapping[abs] = rel, exact
             if repo.ui.verbose or not exact:
                 repo.ui.status(_('removing %s\n') % ((pats and rel) or abs))
     if not dry_run:
         repo.add(add, wlock=wlock)
         repo.remove(remove, wlock=wlock)
     if similarity > 0:
         for old, new, score in findrenames(repo, add, remove, similarity):
             oldrel, oldexact = mapping[old]
             newrel, newexact = mapping[new]
             if repo.ui.verbose or not oldexact or not newexact:
                 repo.ui.status(_('recording removal of %s as rename to %s '
                                  '(%d%% similar)\n') %
                                (oldrel, newrel, score * 100))
             if not dry_run:
                 repo.copy(old, new, wlock=wlock)

mercurial/commands.py

@@ -1,3507 +1,3507 b''
 # commands.py - command processing for mercurial
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from demandload import demandload
 from node import *
 from i18n import gettext as _
 demandload(globals(), "os re sys signal shutil imp urllib pdb shlex")
 demandload(globals(), "fancyopts ui hg util lock revlog templater bundlerepo")
 demandload(globals(), "fnmatch difflib patch random signal tempfile time")
 demandload(globals(), "traceback errno socket version struct atexit sets bz2")
 demandload(globals(), "archival cStringIO changegroup")
 demandload(globals(), "cmdutil hgweb.server sshserver")
 
 class UnknownCommand(Exception):
     """Exception raised if command is not in the command table."""
 class AmbiguousCommand(Exception):
     """Exception raised if command shortcut matches more than one command."""
 
 def bail_if_changed(repo):
     modified, added, removed, deleted = repo.status()[:4]
     if modified or added or removed or deleted:
         raise util.Abort(_("outstanding uncommitted changes"))
 
 def relpath(repo, args):
     cwd = repo.getcwd()
     if cwd:
         return [util.normpath(os.path.join(cwd, x)) for x in args]
     return args
 
 def logmessage(opts):
     """ get the log message according to -m and -l option """
     message = opts['message']
     logfile = opts['logfile']
 
     if message and logfile:
         raise util.Abort(_('options --message and --logfile are mutually '
                            'exclusive'))
     if not message and logfile:
         try:
             if logfile == '-':
                 message = sys.stdin.read()
             else:
                 message = open(logfile).read()
         except IOError, inst:
             raise util.Abort(_("can't read commit message '%s': %s") %
                              (logfile, inst.strerror))
     return message
 
 def walkchangerevs(ui, repo, pats, opts):
     '''Iterate over files and the revs they changed in.
 
     Callers most commonly need to iterate backwards over the history
     it is interested in.  Doing so has awful (quadratic-looking)
     performance, so we use iterators in a "windowed" way.
 
     We walk a window of revisions in the desired order.  Within the
     window, we first walk forwards to gather data, then in the desired
     order (usually backwards) to display it.
 
     This function returns an (iterator, getchange, matchfn) tuple.  The
     getchange function returns the changelog entry for a numeric
     revision.  The iterator yields 3-tuples.  They will be of one of
     the following forms:
 
     "window", incrementing, lastrev: stepping through a window,
     positive if walking forwards through revs, last rev in the
     sequence iterated over - use to reset state for the current window
 
     "add", rev, fns: out-of-order traversal of the given file names
     fns, which changed during revision rev - use to gather data for
     possible display
 
     "iter", rev, None: in-order traversal of the revs earlier iterated
     over with "add" - use to display data'''
 
     def increasing_windows(start, end, windowsize=8, sizelimit=512):
         if start < end:
             while start < end:
                 yield start, min(windowsize, end-start)
                 start += windowsize
                 if windowsize < sizelimit:
                     windowsize *= 2
         else:
             while start > end:
                 yield start, min(windowsize, start-end-1)
                 start -= windowsize
                 if windowsize < sizelimit:
                     windowsize *= 2
 
 
     files, matchfn, anypats = cmdutil.matchpats(repo, pats, opts)
     follow = opts.get('follow') or opts.get('follow_first')
 
     if repo.changelog.count() == 0:
         return [], False, matchfn
 
     if follow:
         p = repo.dirstate.parents()[0]
         if p == nullid:
             ui.warn(_('No working directory revision; defaulting to tip\n'))
             start = 'tip'
         else:
             start = repo.changelog.rev(p)
         defrange = '%s:0' % start
     else:
         defrange = 'tip:0'
     revs = map(int, revrange(ui, repo, opts['rev'] or [defrange]))
     wanted = {}
     slowpath = anypats
     fncache = {}
 
     chcache = {}
     def getchange(rev):
         ch = chcache.get(rev)
         if ch is None:
             chcache[rev] = ch = repo.changelog.read(repo.lookup(str(rev)))
         return ch
 
     if not slowpath and not files:
         # No files, no patterns.  Display all revs.
         wanted = dict(zip(revs, revs))
     copies = []
     if not slowpath:
         # Only files, no patterns.  Check the history of each file.
         def filerevgen(filelog, node):
             cl_count = repo.changelog.count()
             if node is None:
                 last = filelog.count() - 1
             else:
                 last = filelog.rev(node)
             for i, window in increasing_windows(last, -1):
                 revs = []
                 for j in xrange(i - window, i + 1):
                     n = filelog.node(j)
                     revs.append((filelog.linkrev(n),
                                  follow and filelog.renamed(n)))
                 revs.reverse()
                 for rev in revs:
                     # only yield rev for which we have the changelog, it can
                     # happen while doing "hg log" during a pull or commit
                     if rev[0] < cl_count:
                         yield rev
         def iterfiles():
             for filename in files:
                 yield filename, None
             for filename_node in copies:
                 yield filename_node
         minrev, maxrev = min(revs), max(revs)
         for file_, node in iterfiles():
             filelog = repo.file(file_)
             # A zero count may be a directory or deleted file, so
             # try to find matching entries on the slow path.
             if filelog.count() == 0:
                 slowpath = True
                 break
             for rev, copied in filerevgen(filelog, node):
                 if rev <= maxrev:
                     if rev < minrev:
                         break
                     fncache.setdefault(rev, [])
                     fncache[rev].append(file_)
                     wanted[rev] = 1
                     if follow and copied:
                         copies.append(copied)
     if slowpath:
         if follow:
             raise util.Abort(_('can only follow copies/renames for explicit '
                                'file names'))
 
         # The slow path checks files modified in every changeset.
         def changerevgen():
             for i, window in increasing_windows(repo.changelog.count()-1, -1):
                 for j in xrange(i - window, i + 1):
                     yield j, getchange(j)[3]
 
         for rev, changefiles in changerevgen():
             matches = filter(matchfn, changefiles)
             if matches:
                 fncache[rev] = matches
                 wanted[rev] = 1
 
     class followfilter:
         def __init__(self, onlyfirst=False):
             self.startrev = -1
             self.roots = []
             self.onlyfirst = onlyfirst
 
         def match(self, rev):
             def realparents(rev):
                 if self.onlyfirst:
                     return repo.changelog.parentrevs(rev)[0:1]
                 else:
                     return filter(lambda x: x != -1, repo.changelog.parentrevs(rev))
 
             if self.startrev == -1:
                 self.startrev = rev
                 return True
 
             if rev > self.startrev:
                 # forward: all descendants
                 if not self.roots:
                     self.roots.append(self.startrev)
                 for parent in realparents(rev):
                     if parent in self.roots:
                         self.roots.append(rev)
                         return True
             else:
                 # backwards: all parents
                 if not self.roots:
                     self.roots.extend(realparents(self.startrev))
                 if rev in self.roots:
                     self.roots.remove(rev)
                     self.roots.extend(realparents(rev))
                     return True
 
             return False
 
     # it might be worthwhile to do this in the iterator if the rev range
     # is descending and the prune args are all within that range
     for rev in opts.get('prune', ()):
         rev = repo.changelog.rev(repo.lookup(rev))
         ff = followfilter()
         stop = min(revs[0], revs[-1])
         for x in range(rev, stop-1, -1):
             if ff.match(x) and wanted.has_key(x):
                 del wanted[x]
 
     def iterate():
         if follow and not files:
             ff = followfilter(onlyfirst=opts.get('follow_first'))
             def want(rev):
                 if ff.match(rev) and rev in wanted:
                     return True
                 return False
         else:
             def want(rev):
                 return rev in wanted
 
         for i, window in increasing_windows(0, len(revs)):
             yield 'window', revs[0] < revs[-1], revs[-1]
             nrevs = [rev for rev in revs[i:i+window] if want(rev)]
             srevs = list(nrevs)
             srevs.sort()
             for rev in srevs:
                 fns = fncache.get(rev) or filter(matchfn, getchange(rev)[3])
                 yield 'add', rev, fns
             for rev in nrevs:
                 yield 'iter', rev, None
     return iterate(), getchange, matchfn
 
 revrangesep = ':'
 
 def revfix(repo, val, defval):
     '''turn user-level id of changeset into rev number.
     user-level id can be tag, changeset, rev number, or negative rev
     number relative to number of revs (-1 is tip, etc).'''
     if not val:
         return defval
     try:
         num = int(val)
         if str(num) != val:
             raise ValueError
         if num < 0:
             num += repo.changelog.count()
         if num < 0:
             num = 0
         elif num >= repo.changelog.count():
             raise ValueError
     except ValueError:
         try:
             num = repo.changelog.rev(repo.lookup(val))
         except KeyError:
-            raise util.Abort(_('invalid revision identifier %s'), val)
+            raise util.Abort(_('invalid revision identifier %s') % val)
     return num
 
 def revpair(ui, repo, revs):
     '''return pair of nodes, given list of revisions. second item can
     be None, meaning use working dir.'''
     if not revs:
         return repo.dirstate.parents()[0], None
     end = None
     if len(revs) == 1:
         start = revs[0]
         if revrangesep in start:
             start, end = start.split(revrangesep, 1)
             start = revfix(repo, start, 0)
             end = revfix(repo, end, repo.changelog.count() - 1)
         else:
             start = revfix(repo, start, None)
     elif len(revs) == 2:
         if revrangesep in revs[0] or revrangesep in revs[1]:
             raise util.Abort(_('too many revisions specified'))
         start = revfix(repo, revs[0], None)
         end = revfix(repo, revs[1], None)
     else:
         raise util.Abort(_('too many revisions specified'))
     if end is not None: end = repo.lookup(str(end))
     return repo.lookup(str(start)), end
 
 def revrange(ui, repo, revs):
     """Yield revision as strings from a list of revision specifications."""
     seen = {}
     for spec in revs:
         if revrangesep in spec:
             start, end = spec.split(revrangesep, 1)
             start = revfix(repo, start, 0)
             end = revfix(repo, end, repo.changelog.count() - 1)
             step = start > end and -1 or 1
             for rev in xrange(start, end+step, step):
                 if rev in seen:
                     continue
                 seen[rev] = 1
                 yield str(rev)
         else:
             rev = revfix(repo, spec, None)
             if rev in seen:
                 continue
             seen[rev] = 1
             yield str(rev)
 
 def write_bundle(cg, filename=None, compress=True):
     """Write a bundle file and return its filename.
 
     Existing files will not be overwritten.
     If no filename is specified, a temporary file is created.
     bz2 compression can be turned off.
     The bundle file will be deleted in case of errors.
     """
     class nocompress(object):
         def compress(self, x):
             return x
         def flush(self):
             return ""
 
     fh = None
     cleanup = None
     try:
         if filename:
             if os.path.exists(filename):
-                raise util.Abort(_("file '%s' already exists"), filename)
+                raise util.Abort(_("file '%s' already exists") % filename)
             fh = open(filename, "wb")
         else:
             fd, filename = tempfile.mkstemp(prefix="hg-bundle-", suffix=".hg")
             fh = os.fdopen(fd, "wb")
         cleanup = filename
 
         if compress:
             fh.write("HG10")
             z = bz2.BZ2Compressor(9)
         else:
             fh.write("HG10UN")
             z = nocompress()
         # parse the changegroup data, otherwise we will block
         # in case of sshrepo because we don't know the end of the stream
 
         # an empty chunkiter is the end of the changegroup
         empty = False
         while not empty:
             empty = True
             for chunk in changegroup.chunkiter(cg):
                 empty = False
                 fh.write(z.compress(changegroup.genchunk(chunk)))
             fh.write(z.compress(changegroup.closechunk()))
         fh.write(z.flush())
         cleanup = None
         return filename
     finally:
         if fh is not None:
             fh.close()
         if cleanup is not None:
             os.unlink(cleanup)
 
 def trimuser(ui, name, rev, revcache):
     """trim the name of the user who committed a change"""
     user = revcache.get(rev)
     if user is None:
         user = revcache[rev] = ui.shortuser(name)
     return user
 
 class changeset_printer(object):
     '''show changeset information when templating not requested.'''
 
     def __init__(self, ui, repo):
         self.ui = ui
         self.repo = repo
 
     def show(self, rev=0, changenode=None, brinfo=None):
         '''show a single changeset or file revision'''
         log = self.repo.changelog
         if changenode is None:
             changenode = log.node(rev)
         elif not rev:
             rev = log.rev(changenode)
 
         if self.ui.quiet:
             self.ui.write("%d:%s\n" % (rev, short(changenode)))
             return
 
         changes = log.read(changenode)
         date = util.datestr(changes[2])
 
         hexfunc = self.ui.debugflag and hex or short
 
         parents = [(log.rev(p), hexfunc(p)) for p in log.parents(changenode)
                    if self.ui.debugflag or p != nullid]
         if (not self.ui.debugflag and len(parents) == 1 and
             parents[0][0] == rev-1):
             parents = []
 
         self.ui.write(_("changeset:   %d:%s\n") % (rev, hexfunc(changenode)))
 
         for tag in self.repo.nodetags(changenode):
             self.ui.status(_("tag:         %s\n") % tag)
         for parent in parents:
             self.ui.write(_("parent:      %d:%s\n") % parent)
 
         if brinfo and changenode in brinfo:
             br = brinfo[changenode]
             self.ui.write(_("branch:      %s\n") % " ".join(br))
 
         self.ui.debug(_("manifest:    %d:%s\n") %
                       (self.repo.manifest.rev(changes[0]), hex(changes[0])))
         self.ui.status(_("user:        %s\n") % changes[1])
         self.ui.status(_("date:        %s\n") % date)
 
         if self.ui.debugflag:
             files = self.repo.status(log.parents(changenode)[0], changenode)[:3]
             for key, value in zip([_("files:"), _("files+:"), _("files-:")],
                                   files):
                 if value:
                     self.ui.note("%-12s %s\n" % (key, " ".join(value)))
         else:
             self.ui.note(_("files:       %s\n") % " ".join(changes[3]))
 
         description = changes[4].strip()
         if description:
             if self.ui.verbose:
                 self.ui.status(_("description:\n"))
                 self.ui.status(description)
                 self.ui.status("\n\n")
             else:
                 self.ui.status(_("summary:     %s\n") %
                                description.splitlines()[0])
         self.ui.status("\n")
 
 def show_changeset(ui, repo, opts):
     '''show one changeset.  uses template or regular display.  caller
     can pass in 'style' and 'template' options in opts.'''
 
     tmpl = opts.get('template')
     if tmpl:
         tmpl = templater.parsestring(tmpl, quoted=False)
     else:
         tmpl = ui.config('ui', 'logtemplate')
         if tmpl: tmpl = templater.parsestring(tmpl)
     mapfile = opts.get('style') or ui.config('ui', 'style')
     if tmpl or mapfile:
         if mapfile:
             if not os.path.isfile(mapfile):
                 mapname = templater.templatepath('map-cmdline.' + mapfile)
                 if not mapname: mapname = templater.templatepath(mapfile)
                 if mapname: mapfile = mapname
         try:
             t = templater.changeset_templater(ui, repo, mapfile)
         except SyntaxError, inst:
             raise util.Abort(inst.args[0])
         if tmpl: t.use_template(tmpl)
         return t
     return changeset_printer(ui, repo)
 
 def setremoteconfig(ui, opts):
     "copy remote options to ui tree"
     if opts.get('ssh'):
         ui.setconfig("ui", "ssh", opts['ssh'])
     if opts.get('remotecmd'):
         ui.setconfig("ui", "remotecmd", opts['remotecmd'])
 
 def show_version(ui):
     """output version and copyright information"""
     ui.write(_("Mercurial Distributed SCM (version %s)\n")
              % version.get_version())
     ui.status(_(
         "\nCopyright (C) 2005, 2006 Matt Mackall <[e-mail]>\n"
         "This is free software; see the source for copying conditions. "
         "There is NO\nwarranty; "
         "not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"
     ))
 
 def help_(ui, name=None, with_version=False):
     """show help for a command, extension, or list of commands
 
     With no arguments, print a list of commands and short help.
 
     Given a command name, print help for that command.
 
     Given an extension name, print help for that extension, and the
     commands it provides."""
     option_lists = []
 
     def helpcmd(name):
         if with_version:
             show_version(ui)
             ui.write('\n')
         aliases, i = findcmd(ui, name)
         # synopsis
         ui.write("%s\n\n" % i[2])
 
         # description
         doc = i[0].__doc__
         if not doc:
             doc = _("(No help text available)")
         if ui.quiet:
             doc = doc.splitlines(0)[0]
         ui.write("%s\n" % doc.rstrip())
 
         if not ui.quiet:
             # aliases
             if len(aliases) > 1:
                 ui.write(_("\naliases: %s\n") % ', '.join(aliases[1:]))
 
             # options
             if i[1]:
                 option_lists.append(("options", i[1]))
 
     def helplist(select=None):
         h = {}
         cmds = {}
         for c, e in table.items():
             f = c.split("|", 1)[0]
             if select and not select(f):
                 continue
             if name == "shortlist" and not f.startswith("^"):
                 continue
             f = f.lstrip("^")
             if not ui.debugflag and f.startswith("debug"):
                 continue
             doc = e[0].__doc__
             if not doc:
                 doc = _("(No help text available)")
             h[f] = doc.splitlines(0)[0].rstrip()
             cmds[f] = c.lstrip("^")
 
         fns = h.keys()
         fns.sort()
         m = max(map(len, fns))
         for f in fns:
             if ui.verbose:
                 commands = cmds[f].replace("|",", ")
                 ui.write(" %s:\n      %s\n"%(commands, h[f]))
             else:
                 ui.write(' %-*s   %s\n' % (m, f, h[f]))
 
     def helpext(name):
         try:
             mod = findext(name)
         except KeyError:
             raise UnknownCommand(name)
 
         doc = (mod.__doc__ or _('No help text available')).splitlines(0)
         ui.write(_('%s extension - %s\n') % (name.split('.')[-1], doc[0]))
         for d in doc[1:]:
             ui.write(d, '\n')
 
         ui.status('\n')
         if ui.verbose:
             ui.status(_('list of commands:\n\n'))
         else:
             ui.status(_('list of commands (use "hg help -v %s" '
                         'to show aliases and global options):\n\n') % name)
 
         modcmds = dict.fromkeys([c.split('|', 1)[0] for c in mod.cmdtable])
         helplist(modcmds.has_key)
 
     if name and name != 'shortlist':
         try:
             helpcmd(name)
         except UnknownCommand:
             helpext(name)
 
     else:
         # program name
         if ui.verbose or with_version:
             show_version(ui)
         else:
             ui.status(_("Mercurial Distributed SCM\n"))
         ui.status('\n')
 
         # list of commands
         if name == "shortlist":
             ui.status(_('basic commands (use "hg help" '
                         'for the full list or option "-v" for details):\n\n'))
         elif ui.verbose:
             ui.status(_('list of commands:\n\n'))
         else:
             ui.status(_('list of commands (use "hg help -v" '
                         'to show aliases and global options):\n\n'))
 
         helplist()
 
     # global options
     if ui.verbose:
         option_lists.append(("global options", globalopts))
 
     # list all option lists
     opt_output = []
     for title, options in option_lists:
         opt_output.append(("\n%s:\n" % title, None))
         for shortopt, longopt, default, desc in options:
             opt_output.append(("%2s%s" % (shortopt and "-%s" % shortopt,
                                           longopt and " --%s" % longopt),
                                "%s%s" % (desc,
                                          default
                                          and _(" (default: %s)") % default
                                          or "")))
 
     if opt_output:
         opts_len = max([len(line[0]) for line in opt_output if line[1]])
         for first, second in opt_output:
             if second:
                 ui.write(" %-*s  %s\n" % (opts_len, first, second))
             else:
                 ui.write("%s\n" % first)
 
 # Commands start here, listed alphabetically
 
 def add(ui, repo, *pats, **opts):
     """add the specified files on the next commit
 
     Schedule files to be version controlled and added to the repository.
 
     The files will be added to the repository at the next commit.
 
     If no names are given, add all files in the repository.
     """
 
     names = []
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts):
         if exact:
             if ui.verbose:
                 ui.status(_('adding %s\n') % rel)
             names.append(abs)
         elif repo.dirstate.state(abs) == '?':
             ui.status(_('adding %s\n') % rel)
             names.append(abs)
     if not opts.get('dry_run'):
         repo.add(names)
 
 def addremove(ui, repo, *pats, **opts):
     """add all new files, delete all missing files (DEPRECATED)
 
     Add all new files and remove all missing files from the repository.
 
     New files are ignored if they match any of the patterns in .hgignore. As
     with add, these changes take effect at the next commit.
 
     Use the -s option to detect renamed files.  With a parameter > 0,
     this compares every removed file with every added file and records
     those similar enough as renames.  This option takes a percentage
     between 0 (disabled) and 100 (files must be identical) as its
     parameter.  Detecting renamed files this way can be expensive.
     """
     sim = float(opts.get('similarity') or 0)
     if sim < 0 or sim > 100:
         raise util.Abort(_('similarity must be between 0 and 100'))
     return cmdutil.addremove(repo, pats, opts, similarity=sim/100.)
 
 def annotate(ui, repo, *pats, **opts):
     """show changeset information per file line
 
     List changes in files, showing the revision id responsible for each line
 
     This command is useful to discover who did a change or when a change took
     place.
 
     Without the -a option, annotate will avoid processing files it
     detects as binary. With -a, annotate will generate an annotation
     anyway, probably with undesirable results.
     """
     def getnode(rev):
         return short(repo.changelog.node(rev))
 
     ucache = {}
     def getname(rev):
         try:
             return ucache[rev]
         except:
             u = trimuser(ui, repo.changectx(rev).user(), rev, ucache)
             ucache[rev] = u
             return u
 
     dcache = {}
     def getdate(rev):
         datestr = dcache.get(rev)
         if datestr is None:
             datestr = dcache[rev] = util.datestr(repo.changectx(rev).date())
         return datestr
 
     if not pats:
         raise util.Abort(_('at least one file name or pattern required'))
 
     opmap = [['user', getname], ['number', str], ['changeset', getnode],
              ['date', getdate]]
     if not opts['user'] and not opts['changeset'] and not opts['date']:
         opts['number'] = 1
 
     ctx = repo.changectx(opts['rev'] or repo.dirstate.parents()[0])
 
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts,
                                              node=ctx.node()):
         fctx = ctx.filectx(abs)
         if not opts['text'] and util.binary(fctx.data()):
             ui.write(_("%s: binary file\n") % ((pats and rel) or abs))
             continue
 
         lines = fctx.annotate()
         pieces = []
 
         for o, f in opmap:
             if opts[o]:
                 l = [f(n) for n, dummy in lines]
                 if l:
                     m = max(map(len, l))
                     pieces.append(["%*s" % (m, x) for x in l])
 
         if pieces:
             for p, l in zip(zip(*pieces), lines):
                 ui.write("%s: %s" % (" ".join(p), l[1]))
 
 def archive(ui, repo, dest, **opts):
     '''create unversioned archive of a repository revision
 
     By default, the revision used is the parent of the working
     directory; use "-r" to specify a different revision.
 
     To specify the type of archive to create, use "-t".  Valid
     types are:
 
     "files" (default): a directory full of files
     "tar": tar archive, uncompressed
     "tbz2": tar archive, compressed using bzip2
     "tgz": tar archive, compressed using gzip
     "uzip": zip archive, uncompressed
     "zip": zip archive, compressed using deflate
 
     The exact name of the destination archive or directory is given
     using a format string; see "hg help export" for details.
 
     Each member added to an archive file has a directory prefix
     prepended.  Use "-p" to specify a format string for the prefix.
     The default is the basename of the archive, with suffixes removed.
     '''
 
     if opts['rev']:
         node = repo.lookup(opts['rev'])
     else:
         node, p2 = repo.dirstate.parents()
         if p2 != nullid:
             raise util.Abort(_('uncommitted merge - please provide a '
                                'specific revision'))
 
     dest = cmdutil.make_filename(repo, dest, node)
     if os.path.realpath(dest) == repo.root:
         raise util.Abort(_('repository root cannot be destination'))
     dummy, matchfn, dummy = cmdutil.matchpats(repo, [], opts)
     kind = opts.get('type') or 'files'
     prefix = opts['prefix']
     if dest == '-':
         if kind == 'files':
             raise util.Abort(_('cannot archive plain files to stdout'))
         dest = sys.stdout
         if not prefix: prefix = os.path.basename(repo.root) + '-%h'
     prefix = cmdutil.make_filename(repo, prefix, node)
     archival.archive(repo, dest, node, kind, not opts['no_decode'],
                      matchfn, prefix)
 
 def backout(ui, repo, rev, **opts):
     '''reverse effect of earlier changeset
 
     Commit the backed out changes as a new changeset.  The new
     changeset is a child of the backed out changeset.
 
     If you back out a changeset other than the tip, a new head is
     created.  This head is the parent of the working directory.  If
     you back out an old changeset, your working directory will appear
     old after the backout.  You should merge the backout changeset
     with another head.
 
     The --merge option remembers the parent of the working directory
     before starting the backout, then merges the new head with that
     changeset afterwards.  This saves you from doing the merge by
     hand.  The result of this merge is not committed, as for a normal
     merge.'''
 
     bail_if_changed(repo)
     op1, op2 = repo.dirstate.parents()
     if op2 != nullid:
         raise util.Abort(_('outstanding uncommitted merge'))
     node = repo.lookup(rev)
     p1, p2 = repo.changelog.parents(node)
     if p1 == nullid:
         raise util.Abort(_('cannot back out a change with no parents'))
     if p2 != nullid:
         if not opts['parent']:
             raise util.Abort(_('cannot back out a merge changeset without '
                                '--parent'))
         p = repo.lookup(opts['parent'])
         if p not in (p1, p2):
             raise util.Abort(_('%s is not a parent of %s' %
                                (short(p), short(node))))
         parent = p
     else:
         if opts['parent']:
             raise util.Abort(_('cannot use --parent on non-merge changeset'))
         parent = p1
     hg.clean(repo, node, show_stats=False)
     revert_opts = opts.copy()
     revert_opts['all'] = True
     revert_opts['rev'] = hex(parent)
     revert(ui, repo, **revert_opts)
     commit_opts = opts.copy()
     commit_opts['addremove'] = False
     if not commit_opts['message'] and not commit_opts['logfile']:
         commit_opts['message'] = _("Backed out changeset %s") % (hex(node))
         commit_opts['force_editor'] = True
     commit(ui, repo, **commit_opts)
     def nice(node):
         return '%d:%s' % (repo.changelog.rev(node), short(node))
     ui.status(_('changeset %s backs out changeset %s\n') %
               (nice(repo.changelog.tip()), nice(node)))
     if op1 != node:
         if opts['merge']:
             ui.status(_('merging with changeset %s\n') % nice(op1))
             n = _lookup(repo, hex(op1))
             hg.merge(repo, n)
         else:
             ui.status(_('the backout changeset is a new head - '
                         'do not forget to merge\n'))
             ui.status(_('(use "backout --merge" '
                         'if you want to auto-merge)\n'))
 
 def bundle(ui, repo, fname, dest=None, **opts):
     """create a changegroup file
 
     Generate a compressed changegroup file collecting all changesets
     not found in the other repository.
 
     This file can then be transferred using conventional means and
     applied to another repository with the unbundle command. This is
     useful when native push and pull are not available or when
     exporting an entire repository is undesirable. The standard file
     extension is ".hg".
 
     Unlike import/export, this exactly preserves all changeset
     contents including permissions, rename data, and revision history.
     """
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     other = hg.repository(ui, dest)
     o = repo.findoutgoing(other, force=opts['force'])
     cg = repo.changegroup(o, 'bundle')
     write_bundle(cg, fname)
 
 def cat(ui, repo, file1, *pats, **opts):
     """output the latest or given revisions of files
 
     Print the specified files as they were at the given revision.
     If no revision is given then the tip is used.
 
     Output may be to a file, in which case the name of the file is
     given using a format string.  The formatting rules are the same as
     for the export command, with the following additions:
 
     %s   basename of file being printed
     %d   dirname of file being printed, or '.' if in repo root
     %p   root-relative path name of file being printed
     """
     ctx = repo.changectx(opts['rev'] or "-1")
     for src, abs, rel, exact in cmdutil.walk(repo, (file1,) + pats, opts,
                                              ctx.node()):
         fp = cmdutil.make_file(repo, opts['output'], ctx.node(), pathname=abs)
         fp.write(ctx.filectx(abs).data())
 
 def clone(ui, source, dest=None, **opts):
     """make a copy of an existing repository
 
     Create a copy of an existing repository in a new directory.
 
     If no destination directory name is specified, it defaults to the
     basename of the source.
 
     The location of the source is added to the new repository's
     .hg/hgrc file, as the default to be used for future pulls.
 
     For efficiency, hardlinks are used for cloning whenever the source
     and destination are on the same filesystem (note this applies only
     to the repository data, not to the checked out files).  Some
     filesystems, such as AFS, implement hardlinking incorrectly, but
     do not report errors.  In these cases, use the --pull option to
     avoid hardlinking.
 
     You can safely clone repositories and checked out files using full
     hardlinks with
 
       $ cp -al REPO REPOCLONE
 
     which is the fastest way to clone. However, the operation is not
     atomic (making sure REPO is not modified during the operation is
     up to you) and you have to make sure your editor breaks hardlinks
     (Emacs and most Linux Kernel tools do so).
 
     If you use the -r option to clone up to a specific revision, no
     subsequent revisions will be present in the cloned repository.
     This option implies --pull, even on local repositories.
 
     See pull for valid source format details.
 
     It is possible to specify an ssh:// URL as the destination, but no
     .hg/hgrc will be created on the remote side. Look at the help text
     for the pull command for important details about ssh:// URLs.
     """
     setremoteconfig(ui, opts)
     hg.clone(ui, ui.expandpath(source), dest,
              pull=opts['pull'],
              stream=opts['uncompressed'],
              rev=opts['rev'],
              update=not opts['noupdate'])
 
 def commit(ui, repo, *pats, **opts):
     """commit the specified files or all outstanding changes
 
     Commit changes to the given files into the repository.
 
     If a list of files is omitted, all changes reported by "hg status"
     will be committed.
 
     If no commit message is specified, the editor configured in your hgrc
     or in the EDITOR environment variable is started to enter a message.
     """
     message = logmessage(opts)
 
     if opts['addremove']:
         cmdutil.addremove(repo, pats, opts)
     fns, match, anypats = cmdutil.matchpats(repo, pats, opts)
     if pats:
         modified, added, removed = repo.status(files=fns, match=match)[:3]
         files = modified + added + removed
     else:
         files = []
     try:
         repo.commit(files, message, opts['user'], opts['date'], match,
                     force_editor=opts.get('force_editor'))
     except ValueError, inst:
         raise util.Abort(str(inst))
 
 def docopy(ui, repo, pats, opts, wlock):
     # called with the repo lock held
     cwd = repo.getcwd()
     errors = 0
     copied = []
     targets = {}
 
     def okaytocopy(abs, rel, exact):
         reasons = {'?': _('is not managed'),
                    'a': _('has been marked for add'),
                    'r': _('has been marked for remove')}
         state = repo.dirstate.state(abs)
         reason = reasons.get(state)
         if reason:
             if state == 'a':
                 origsrc = repo.dirstate.copied(abs)
                 if origsrc is not None:
                     return origsrc
             if exact:
                 ui.warn(_('%s: not copying - file %s\n') % (rel, reason))
         else:
             return abs
 
     def copy(origsrc, abssrc, relsrc, target, exact):
         abstarget = util.canonpath(repo.root, cwd, target)
         reltarget = util.pathto(cwd, abstarget)
         prevsrc = targets.get(abstarget)
         if prevsrc is not None:
             ui.warn(_('%s: not overwriting - %s collides with %s\n') %
                     (reltarget, abssrc, prevsrc))
             return
         if (not opts['after'] and os.path.exists(reltarget) or
             opts['after'] and repo.dirstate.state(abstarget) not in '?r'):
             if not opts['force']:
                 ui.warn(_('%s: not overwriting - file exists\n') %
                         reltarget)
                 return
             if not opts['after'] and not opts.get('dry_run'):
                 os.unlink(reltarget)
         if opts['after']:
             if not os.path.exists(reltarget):
                 return
         else:
             targetdir = os.path.dirname(reltarget) or '.'
             if not os.path.isdir(targetdir) and not opts.get('dry_run'):
                 os.makedirs(targetdir)
             try:
                 restore = repo.dirstate.state(abstarget) == 'r'
                 if restore and not opts.get('dry_run'):
                     repo.undelete([abstarget], wlock)
                 try:
                     if not opts.get('dry_run'):
                         shutil.copyfile(relsrc, reltarget)
                         shutil.copymode(relsrc, reltarget)
                     restore = False
                 finally:
                     if restore:
                         repo.remove([abstarget], wlock)
             except shutil.Error, inst:
                 raise util.Abort(str(inst))
             except IOError, inst:
                 if inst.errno == errno.ENOENT:
                     ui.warn(_('%s: deleted in working copy\n') % relsrc)
                 else:
                     ui.warn(_('%s: cannot copy - %s\n') %
                             (relsrc, inst.strerror))
                     errors += 1
                     return
         if ui.verbose or not exact:
             ui.status(_('copying %s to %s\n') % (relsrc, reltarget))
         targets[abstarget] = abssrc
         if abstarget != origsrc and not opts.get('dry_run'):
             repo.copy(origsrc, abstarget, wlock)
         copied.append((abssrc, relsrc, exact))
 
     def targetpathfn(pat, dest, srcs):
         if os.path.isdir(pat):
             abspfx = util.canonpath(repo.root, cwd, pat)
             if destdirexists:
                 striplen = len(os.path.split(abspfx)[0])
             else:
                 striplen = len(abspfx)
             if striplen:
                 striplen += len(os.sep)
             res = lambda p: os.path.join(dest, p[striplen:])
         elif destdirexists:
             res = lambda p: os.path.join(dest, os.path.basename(p))
         else:
             res = lambda p: dest
         return res
 
     def targetpathafterfn(pat, dest, srcs):
         if util.patkind(pat, None)[0]:
             # a mercurial pattern
             res = lambda p: os.path.join(dest, os.path.basename(p))
         else:
             abspfx = util.canonpath(repo.root, cwd, pat)
             if len(abspfx) < len(srcs[0][0]):
                 # A directory. Either the target path contains the last
                 # component of the source path or it does not.
                 def evalpath(striplen):
                     score = 0
                     for s in srcs:
                         t = os.path.join(dest, s[0][striplen:])
                         if os.path.exists(t):
                             score += 1
                     return score
 
                 striplen = len(abspfx)
                 if striplen:
                     striplen += len(os.sep)
                 if os.path.isdir(os.path.join(dest, os.path.split(abspfx)[1])):
                     score = evalpath(striplen)
                     striplen1 = len(os.path.split(abspfx)[0])
                     if striplen1:
                         striplen1 += len(os.sep)
                     if evalpath(striplen1) > score:
                         striplen = striplen1
                 res = lambda p: os.path.join(dest, p[striplen:])
             else:
                 # a file
                 if destdirexists:
                     res = lambda p: os.path.join(dest, os.path.basename(p))
                 else:
                     res = lambda p: dest
         return res
 
 
     pats = list(pats)
     if not pats:
         raise util.Abort(_('no source or destination specified'))
     if len(pats) == 1:
         raise util.Abort(_('no destination specified'))
     dest = pats.pop()
     destdirexists = os.path.isdir(dest)
     if (len(pats) > 1 or util.patkind(pats[0], None)[0]) and not destdirexists:
         raise util.Abort(_('with multiple sources, destination must be an '
                          'existing directory'))
     if opts['after']:
         tfn = targetpathafterfn
     else:
         tfn = targetpathfn
     copylist = []
     for pat in pats:
         srcs = []
         for tag, abssrc, relsrc, exact in cmdutil.walk(repo, [pat], opts):
             origsrc = okaytocopy(abssrc, relsrc, exact)
             if origsrc:
                 srcs.append((origsrc, abssrc, relsrc, exact))
         if not srcs:
             continue
         copylist.append((tfn(pat, dest, srcs), srcs))
     if not copylist:
         raise util.Abort(_('no files to copy'))
 
     for targetpath, srcs in copylist:
         for origsrc, abssrc, relsrc, exact in srcs:
             copy(origsrc, abssrc, relsrc, targetpath(abssrc), exact)
 
     if errors:
         ui.warn(_('(consider using --after)\n'))
     return errors, copied
 
 def copy(ui, repo, *pats, **opts):
     """mark files as copied for the next commit
 
     Mark dest as having copies of source files.  If dest is a
     directory, copies are put in that directory.  If dest is a file,
     there can only be one source.
 
     By default, this command copies the contents of files as they
     stand in the working directory.  If invoked with --after, the
     operation is recorded, but no copying is performed.
 
     This command takes effect in the next commit.
 
     NOTE: This command should be treated as experimental. While it
     should properly record copied files, this information is not yet
     fully used by merge, nor fully reported by log.
     """
     wlock = repo.wlock(0)
     errs, copied = docopy(ui, repo, pats, opts, wlock)
     return errs
 
 def debugancestor(ui, index, rev1, rev2):
     """find the ancestor revision of two revisions in a given index"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), index, "", 0)
     a = r.ancestor(r.lookup(rev1), r.lookup(rev2))
     ui.write("%d:%s\n" % (r.rev(a), hex(a)))
 
 def debugcomplete(ui, cmd='', **opts):
     """returns the completion list associated with the given command"""
 
     if opts['options']:
         options = []
         otables = [globalopts]
         if cmd:
             aliases, entry = findcmd(ui, cmd)
             otables.append(entry[1])
         for t in otables:
             for o in t:
                 if o[0]:
                     options.append('-%s' % o[0])
                 options.append('--%s' % o[1])
         ui.write("%s\n" % "\n".join(options))
         return
 
     clist = findpossible(ui, cmd).keys()
     clist.sort()
     ui.write("%s\n" % "\n".join(clist))
 
 def debugrebuildstate(ui, repo, rev=None):
     """rebuild the dirstate as it would look like for the given revision"""
     if not rev:
         rev = repo.changelog.tip()
     else:
         rev = repo.lookup(rev)
     change = repo.changelog.read(rev)
     n = change[0]
     files = repo.manifest.read(n)
     wlock = repo.wlock()
     repo.dirstate.rebuild(rev, files)
 
 def debugcheckstate(ui, repo):
     """validate the correctness of the current dirstate"""
     parent1, parent2 = repo.dirstate.parents()
     repo.dirstate.read()
     dc = repo.dirstate.map
     keys = dc.keys()
     keys.sort()
     m1n = repo.changelog.read(parent1)[0]
     m2n = repo.changelog.read(parent2)[0]
     m1 = repo.manifest.read(m1n)
     m2 = repo.manifest.read(m2n)
     errors = 0
     for f in dc:
         state = repo.dirstate.state(f)
         if state in "nr" and f not in m1:
             ui.warn(_("%s in state %s, but not in manifest1\n") % (f, state))
             errors += 1
         if state in "a" and f in m1:
             ui.warn(_("%s in state %s, but also in manifest1\n") % (f, state))
             errors += 1
         if state in "m" and f not in m1 and f not in m2:
             ui.warn(_("%s in state %s, but not in either manifest\n") %
                     (f, state))
             errors += 1
     for f in m1:
         state = repo.dirstate.state(f)
         if state not in "nrm":
             ui.warn(_("%s in manifest1, but listed as state %s") % (f, state))
             errors += 1
     if errors:
         error = _(".hg/dirstate inconsistent with current parent's manifest")
         raise util.Abort(error)
 
 def debugconfig(ui, repo, *values):
     """show combined config settings from all hgrc files
 
     With no args, print names and values of all config items.
 
     With one arg of the form section.name, print just the value of
     that config item.
 
     With multiple args, print names and values of all config items
     with matching section names."""
 
     if values:
         if len([v for v in values if '.' in v]) > 1:
             raise util.Abort(_('only one config item permitted'))
     for section, name, value in ui.walkconfig():
         sectname = section + '.' + name
         if values:
             for v in values:
                 if v == section:
                     ui.write('%s=%s\n' % (sectname, value))
                 elif v == sectname:
                     ui.write(value, '\n')
         else:
             ui.write('%s=%s\n' % (sectname, value))
 
 def debugsetparents(ui, repo, rev1, rev2=None):
     """manually set the parents of the current working directory
 
     This is useful for writing repository conversion tools, but should
     be used with care.
     """
 
     if not rev2:
         rev2 = hex(nullid)
 
     repo.dirstate.setparents(repo.lookup(rev1), repo.lookup(rev2))
 
 def debugstate(ui, repo):
     """show the contents of the current dirstate"""
     repo.dirstate.read()
     dc = repo.dirstate.map
     keys = dc.keys()
     keys.sort()
     for file_ in keys:
         ui.write("%c %3o %10d %s %s\n"
                  % (dc[file_][0], dc[file_][1] & 0777, dc[file_][2],
                     time.strftime("%x %X",
                                   time.localtime(dc[file_][3])), file_))
     for f in repo.dirstate.copies:
         ui.write(_("copy: %s -> %s\n") % (repo.dirstate.copies[f], f))
 
 def debugdata(ui, file_, rev):
     """dump the contents of an data file revision"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False),
                       file_[:-2] + ".i", file_, 0)
     try:
         ui.write(r.revision(r.lookup(rev)))
     except KeyError:
-        raise util.Abort(_('invalid revision identifier %s'), rev)
+        raise util.Abort(_('invalid revision identifier %s') % rev)
 
 def debugindex(ui, file_):
     """dump the contents of an index file"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_, "", 0)
     ui.write("   rev    offset  length   base linkrev" +
              " nodeid       p1           p2\n")
     for i in range(r.count()):
         node = r.node(i)
         pp = r.parents(node)
         ui.write("% 6d % 9d % 7d % 6d % 7d %s %s %s\n" % (
                 i, r.start(i), r.length(i), r.base(i), r.linkrev(node),
             short(node), short(pp[0]), short(pp[1])))
 
 def debugindexdot(ui, file_):
     """dump an index DAG as a .dot file"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_, "", 0)
     ui.write("digraph G {\n")
     for i in range(r.count()):
         node = r.node(i)
         pp = r.parents(node)
         ui.write("\t%d -> %d\n" % (r.rev(pp[0]), i))
         if pp[1] != nullid:
             ui.write("\t%d -> %d\n" % (r.rev(pp[1]), i))
     ui.write("}\n")
 
 def debugrename(ui, repo, file, rev=None):
     """dump rename information"""
     r = repo.file(relpath(repo, [file])[0])
     if rev:
         try:
             # assume all revision numbers are for changesets
             n = repo.lookup(rev)
             change = repo.changelog.read(n)
             m = repo.manifest.read(change[0])
             n = m[relpath(repo, [file])[0]]
         except (hg.RepoError, KeyError):
             n = r.lookup(rev)
     else:
         n = r.tip()
     m = r.renamed(n)
     if m:
         ui.write(_("renamed from %s:%s\n") % (m[0], hex(m[1])))
     else:
         ui.write(_("not renamed\n"))
 
 def debugwalk(ui, repo, *pats, **opts):
     """show how files match on given patterns"""
     items = list(cmdutil.walk(repo, pats, opts))
     if not items:
         return
     fmt = '%%s  %%-%ds  %%-%ds  %%s' % (
         max([len(abs) for (src, abs, rel, exact) in items]),
         max([len(rel) for (src, abs, rel, exact) in items]))
     for src, abs, rel, exact in items:
         line = fmt % (src, abs, rel, exact and 'exact' or '')
         ui.write("%s\n" % line.rstrip())
 
 def diff(ui, repo, *pats, **opts):
     """diff repository (or selected files)
 
     Show differences between revisions for the specified files.
 
     Differences between files are shown using the unified diff format.
 
     When two revision arguments are given, then changes are shown
     between those revisions. If only one revision is specified then
     that revision is compared to the working directory, and, when no
     revisions are specified, the working directory files are compared
     to its parent.
 
     Without the -a option, diff will avoid generating diffs of files
     it detects as binary. With -a, diff will generate a diff anyway,
     probably with undesirable results.
     """
     node1, node2 = revpair(ui, repo, opts['rev'])
 
     fns, matchfn, anypats = cmdutil.matchpats(repo, pats, opts)
 
     patch.diff(repo, node1, node2, fns, match=matchfn,
                opts=patch.diffopts(ui, opts))
 
 def export(ui, repo, *changesets, **opts):
     """dump the header and diffs for one or more changesets
 
     Print the changeset header and diffs for one or more revisions.
 
     The information shown in the changeset header is: author,
     changeset hash, parent and commit comment.
 
     Output may be to a file, in which case the name of the file is
     given using a format string.  The formatting rules are as follows:
 
     %%   literal "%" character
     %H   changeset hash (40 bytes of hexadecimal)
     %N   number of patches being generated
     %R   changeset revision number
     %b   basename of the exporting repository
     %h   short-form changeset hash (12 bytes of hexadecimal)
     %n   zero-padded sequence number, starting at 1
     %r   zero-padded changeset revision number
 
     Without the -a option, export will avoid generating diffs of files
     it detects as binary. With -a, export will generate a diff anyway,
     probably with undesirable results.
 
     With the --switch-parent option, the diff will be against the second
     parent. It can be useful to review a merge.
     """
     if not changesets:
         raise util.Abort(_("export requires at least one changeset"))
     revs = list(revrange(ui, repo, changesets))
     if len(revs) > 1:
         ui.note(_('exporting patches:\n'))
     else:
         ui.note(_('exporting patch:\n'))
     patch.export(repo, map(repo.lookup, revs), template=opts['output'],
                  switch_parent=opts['switch_parent'],
                  opts=patch.diffopts(ui, opts))
 
 def forget(ui, repo, *pats, **opts):
     """don't add the specified files on the next commit (DEPRECATED)
 
     (DEPRECATED)
     Undo an 'hg add' scheduled for the next commit.
 
     This command is now deprecated and will be removed in a future
     release. Please use revert instead.
     """
     ui.warn(_("(the forget command is deprecated; use revert instead)\n"))
     forget = []
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts):
         if repo.dirstate.state(abs) == 'a':
             forget.append(abs)
             if ui.verbose or not exact:
                 ui.status(_('forgetting %s\n') % ((pats and rel) or abs))
     repo.forget(forget)
 
 def grep(ui, repo, pattern, *pats, **opts):
     """search for a pattern in specified files and revisions
 
     Search revisions of files for a regular expression.
 
     This command behaves differently than Unix grep.  It only accepts
     Python/Perl regexps.  It searches repository history, not the
     working directory.  It always prints the revision number in which
     a match appears.
 
     By default, grep only prints output for the first revision of a
     file in which it finds a match.  To get it to print every revision
     that contains a change in match status ("-" for a match that
     becomes a non-match, or "+" for a non-match that becomes a match),
     use the --all flag.
     """
     reflags = 0
     if opts['ignore_case']:
         reflags |= re.I
     regexp = re.compile(pattern, reflags)
     sep, eol = ':', '\n'
     if opts['print0']:
         sep = eol = '\0'
 
     fcache = {}
     def getfile(fn):
         if fn not in fcache:
             fcache[fn] = repo.file(fn)
         return fcache[fn]
 
     def matchlines(body):
         begin = 0
         linenum = 0
         while True:
             match = regexp.search(body, begin)
             if not match:
                 break
             mstart, mend = match.span()
             linenum += body.count('\n', begin, mstart) + 1
             lstart = body.rfind('\n', begin, mstart) + 1 or begin
             lend = body.find('\n', mend)
             yield linenum, mstart - lstart, mend - lstart, body[lstart:lend]
             begin = lend + 1
 
     class linestate(object):
         def __init__(self, line, linenum, colstart, colend):
             self.line = line
             self.linenum = linenum
             self.colstart = colstart
             self.colend = colend
 
         def __eq__(self, other):
             return self.line == other.line
 
     matches = {}
     copies = {}
     def grepbody(fn, rev, body):
         matches[rev].setdefault(fn, [])
         m = matches[rev][fn]
         for lnum, cstart, cend, line in matchlines(body):
             s = linestate(line, lnum, cstart, cend)
             m.append(s)
 
     def difflinestates(a, b):
         sm = difflib.SequenceMatcher(None, a, b)
         for tag, alo, ahi, blo, bhi in sm.get_opcodes():
             if tag == 'insert':
                 for i in range(blo, bhi):
                     yield ('+', b[i])
             elif tag == 'delete':
                 for i in range(alo, ahi):
                     yield ('-', a[i])
             elif tag == 'replace':
                 for i in range(alo, ahi):
                     yield ('-', a[i])
                 for i in range(blo, bhi):
                     yield ('+', b[i])
 
     prev = {}
     ucache = {}
     def display(fn, rev, states, prevstates):
         counts = {'-': 0, '+': 0}
         filerevmatches = {}
         if incrementing or not opts['all']:
             a, b = prevstates, states
         else:
             a, b = states, prevstates
         for change, l in difflinestates(a, b):
             if incrementing or not opts['all']:
                 r = rev
             else:
                 r = prev[fn]
             cols = [fn, str(r)]
             if opts['line_number']:
                 cols.append(str(l.linenum))
             if opts['all']:
                 cols.append(change)
             if opts['user']:
                 cols.append(trimuser(ui, getchange(r)[1], rev,
                                      ucache))
             if opts['files_with_matches']:
                 c = (fn, rev)
                 if c in filerevmatches:
                     continue
                 filerevmatches[c] = 1
             else:
                 cols.append(l.line)
             ui.write(sep.join(cols), eol)
             counts[change] += 1
         return counts['+'], counts['-']
 
     fstate = {}
     skip = {}
     changeiter, getchange, matchfn = walkchangerevs(ui, repo, pats, opts)
     count = 0
     incrementing = False
     follow = opts.get('follow')
     for st, rev, fns in changeiter:
         if st == 'window':
             incrementing = rev
             matches.clear()
         elif st == 'add':
             change = repo.changelog.read(repo.lookup(str(rev)))
             mf = repo.manifest.read(change[0])
             matches[rev] = {}
             for fn in fns:
                 if fn in skip:
                     continue
                 fstate.setdefault(fn, {})
                 try:
                     grepbody(fn, rev, getfile(fn).read(mf[fn]))
                     if follow:
                         copied = getfile(fn).renamed(mf[fn])
                         if copied:
                             copies.setdefault(rev, {})[fn] = copied[0]
                 except KeyError:
                     pass
         elif st == 'iter':
             states = matches[rev].items()
             states.sort()
             for fn, m in states:
                 copy = copies.get(rev, {}).get(fn)
                 if fn in skip:
                     if copy:
                         skip[copy] = True
                     continue
                 if incrementing or not opts['all'] or fstate[fn]:
                     pos, neg = display(fn, rev, m, fstate[fn])
                     count += pos + neg
                     if pos and not opts['all']:
                         skip[fn] = True
                         if copy:
                             skip[copy] = True
                 fstate[fn] = m
                 if copy:
                     fstate[copy] = m
                 prev[fn] = rev
 
     if not incrementing:
         fstate = fstate.items()
         fstate.sort()
         for fn, state in fstate:
             if fn in skip:
                 continue
             if fn not in copies.get(prev[fn], {}):
                 display(fn, rev, {}, state)
     return (count == 0 and 1) or 0
 
 def heads(ui, repo, **opts):
     """show current repository heads
 
     Show all repository head changesets.
 
     Repository "heads" are changesets that don't have children
     changesets. They are where development generally takes place and
     are the usual targets for update and merge operations.
     """
     if opts['rev']:
         heads = repo.heads(repo.lookup(opts['rev']))
     else:
         heads = repo.heads()
     br = None
     if opts['branches']:
         br = repo.branchlookup(heads)
     displayer = show_changeset(ui, repo, opts)
     for n in heads:
         displayer.show(changenode=n, brinfo=br)
 
 def identify(ui, repo):
     """print information about the working copy
 
     Print a short summary of the current state of the repo.
 
     This summary identifies the repository state using one or two parent
     hash identifiers, followed by a "+" if there are uncommitted changes
     in the working directory, followed by a list of tags for this revision.
     """
     parents = [p for p in repo.dirstate.parents() if p != nullid]
     if not parents:
         ui.write(_("unknown\n"))
         return
 
     hexfunc = ui.debugflag and hex or short
     modified, added, removed, deleted = repo.status()[:4]
     output = ["%s%s" %
               ('+'.join([hexfunc(parent) for parent in parents]),
               (modified or added or removed or deleted) and "+" or "")]
 
     if not ui.quiet:
         # multiple tags for a single parent separated by '/'
         parenttags = ['/'.join(tags)
                       for tags in map(repo.nodetags, parents) if tags]
         # tags for multiple parents separated by ' + '
         if parenttags:
             output.append(' + '.join(parenttags))
 
     ui.write("%s\n" % ' '.join(output))
 
 def import_(ui, repo, patch1, *patches, **opts):
     """import an ordered set of patches
 
     Import a list of patches and commit them individually.
 
     If there are outstanding changes in the working directory, import
     will abort unless given the -f flag.
 
     You can import a patch straight from a mail message.  Even patches
     as attachments work (body part must be type text/plain or
     text/x-patch to be used).  From and Subject headers of email
     message are used as default committer and commit message.  All
     text/plain body parts before first diff are added to commit
     message.
 
     If imported patch was generated by hg export, user and description
     from patch override values from message headers and body.  Values
     given on command line with -m and -u override these.
 
     To read a patch from standard input, use patch name "-".
     """
     patches = (patch1,) + patches
 
     if not opts['force']:
         bail_if_changed(repo)
 
     d = opts["base"]
     strip = opts["strip"]
 
     wlock = repo.wlock()
     lock = repo.lock()
 
     for p in patches:
         pf = os.path.join(d, p)
 
         if pf == '-':
             ui.status(_("applying patch from stdin\n"))
             tmpname, message, user, date = patch.extract(ui, sys.stdin)
         else:
             ui.status(_("applying %s\n") % p)
             tmpname, message, user, date = patch.extract(ui, file(pf))
 
         if tmpname is None:
             raise util.Abort(_('no diffs found'))
 
         try:
             if opts['message']:
                 # pickup the cmdline msg
                 message = opts['message']
             elif message:
                 # pickup the patch msg
                 message = message.strip()
             else:
                 # launch the editor
                 message = None
             ui.debug(_('message:\n%s\n') % message)
 
             files, fuzz = patch.patch(tmpname, ui, strip=strip, cwd=repo.root)
             files = patch.updatedir(ui, repo, files, wlock=wlock)
             repo.commit(files, message, user, date, wlock=wlock, lock=lock)
         finally:
             os.unlink(tmpname)
 
 def incoming(ui, repo, source="default", **opts):
     """show new changesets found in source
 
     Show new changesets found in the specified path/URL or the default
     pull location. These are the changesets that would be pulled if a pull
     was requested.
 
     For remote repository, using --bundle avoids downloading the changesets
     twice if the incoming is followed by a pull.
 
     See pull for valid source format details.
     """
     source = ui.expandpath(source)
     setremoteconfig(ui, opts)
 
     other = hg.repository(ui, source)
     incoming = repo.findincoming(other, force=opts["force"])
     if not incoming:
         ui.status(_("no changes found\n"))
         return
 
     cleanup = None
     try:
         fname = opts["bundle"]
         if fname or not other.local():
             # create a bundle (uncompressed if other repo is not local)
             cg = other.changegroup(incoming, "incoming")
             fname = cleanup = write_bundle(cg, fname, compress=other.local())
             # keep written bundle?
             if opts["bundle"]:
                 cleanup = None
             if not other.local():
                 # use the created uncompressed bundlerepo
                 other = bundlerepo.bundlerepository(ui, repo.root, fname)
 
         revs = None
         if opts['rev']:
             revs = [other.lookup(rev) for rev in opts['rev']]
         o = other.changelog.nodesbetween(incoming, revs)[0]
         if opts['newest_first']:
             o.reverse()
         displayer = show_changeset(ui, other, opts)
         for n in o:
             parents = [p for p in other.changelog.parents(n) if p != nullid]
             if opts['no_merges'] and len(parents) == 2:
                 continue
             displayer.show(changenode=n)
             if opts['patch']:
                 prev = (parents and parents[0]) or nullid
                 patch.diff(other, prev, n, fp=repo.ui)
                 ui.write("\n")
     finally:
         if hasattr(other, 'close'):
             other.close()
         if cleanup:
             os.unlink(cleanup)
 
 def init(ui, dest=".", **opts):
     """create a new repository in the given directory
 
     Initialize a new repository in the given directory.  If the given
     directory does not exist, it is created.
 
     If no directory is given, the current directory is used.
 
     It is possible to specify an ssh:// URL as the destination.
     Look at the help text for the pull command for important details
     about ssh:// URLs.
     """
     setremoteconfig(ui, opts)
     hg.repository(ui, dest, create=1)
 
 def locate(ui, repo, *pats, **opts):
     """locate files matching specific patterns
 
     Print all files under Mercurial control whose names match the
     given patterns.
 
     This command searches the current directory and its
     subdirectories.  To search an entire repository, move to the root
     of the repository.
 
     If no patterns are given to match, this command prints all file
     names.
 
     If you want to feed the output of this command into the "xargs"
     command, use the "-0" option to both this command and "xargs".
     This will avoid the problem of "xargs" treating single filenames
     that contain white space as multiple filenames.
     """
     end = opts['print0'] and '\0' or '\n'
     rev = opts['rev']
     if rev:
         node = repo.lookup(rev)
     else:
         node = None
 
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts, node=node,
                                              head='(?:.*/|)'):
         if not node and repo.dirstate.state(abs) == '?':
             continue
         if opts['fullpath']:
             ui.write(os.path.join(repo.root, abs), end)
         else:
             ui.write(((pats and rel) or abs), end)
 
 def log(ui, repo, *pats, **opts):
     """show revision history of entire repository or files
 
     Print the revision history of the specified files or the entire
     project.
 
     File history is shown without following rename or copy history of
     files.  Use -f/--follow with a file name to follow history across
     renames and copies. --follow without a file name will only show
     ancestors or descendants of the starting revision. --follow-first
     only follows the first parent of merge revisions.
 
     If no revision range is specified, the default is tip:0 unless
     --follow is set, in which case the working directory parent is
     used as the starting revision.
 
     By default this command outputs: changeset id and hash, tags,
     non-trivial parents, user, date and time, and a summary for each
     commit. When the -v/--verbose switch is used, the list of changed
     files and full commit message is shown.
     """
     class dui(object):
         # Implement and delegate some ui protocol.  Save hunks of
         # output for later display in the desired order.
         def __init__(self, ui):
             self.ui = ui
             self.hunk = {}
             self.header = {}
         def bump(self, rev):
             self.rev = rev
             self.hunk[rev] = []
             self.header[rev] = []
         def note(self, *args):
             if self.verbose:
                 self.write(*args)
         def status(self, *args):
             if not self.quiet:
                 self.write(*args)
         def write(self, *args):
             self.hunk[self.rev].append(args)
         def write_header(self, *args):
             self.header[self.rev].append(args)
         def debug(self, *args):
             if self.debugflag:
                 self.write(*args)
         def __getattr__(self, key):
             return getattr(self.ui, key)
 
     changeiter, getchange, matchfn = walkchangerevs(ui, repo, pats, opts)
 
     if opts['limit']:
         try:
             limit = int(opts['limit'])
         except ValueError:
             raise util.Abort(_('limit must be a positive integer'))
         if limit <= 0: raise util.Abort(_('limit must be positive'))
     else:
         limit = sys.maxint
     count = 0
 
     displayer = show_changeset(ui, repo, opts)
     for st, rev, fns in changeiter:
         if st == 'window':
             du = dui(ui)
             displayer.ui = du
         elif st == 'add':
             du.bump(rev)
             changenode = repo.changelog.node(rev)
             parents = [p for p in repo.changelog.parents(changenode)
                        if p != nullid]
             if opts['no_merges'] and len(parents) == 2:
                 continue
             if opts['only_merges'] and len(parents) != 2:
                 continue
 
             if opts['keyword']:
                 changes = getchange(rev)
                 miss = 0
                 for k in [kw.lower() for kw in opts['keyword']]:
                     if not (k in changes[1].lower() or
                             k in changes[4].lower() or
                             k in " ".join(changes[3][:20]).lower()):
                         miss = 1
                         break
                 if miss:
                     continue
 
             br = None
             if opts['branches']:
                 br = repo.branchlookup([repo.changelog.node(rev)])
 
             displayer.show(rev, brinfo=br)
             if opts['patch']:
                 prev = (parents and parents[0]) or nullid
                 patch.diff(repo, prev, changenode, match=matchfn, fp=du)
                 du.write("\n\n")
         elif st == 'iter':
             if count == limit: break
             if du.header[rev]:
                 for args in du.header[rev]:
                     ui.write_header(*args)
             if du.hunk[rev]:
                 count += 1
                 for args in du.hunk[rev]:
                     ui.write(*args)
 
 def manifest(ui, repo, rev=None):
     """output the latest or given revision of the project manifest
 
     Print a list of version controlled files for the given revision.
 
     The manifest is the list of files being version controlled. If no revision
     is given then the tip is used.
     """
     if rev:
         try:
             # assume all revision numbers are for changesets
             n = repo.lookup(rev)
             change = repo.changelog.read(n)
             n = change[0]
         except hg.RepoError:
             n = repo.manifest.lookup(rev)
     else:
         n = repo.manifest.tip()
     m = repo.manifest.read(n)
     files = m.keys()
     files.sort()
 
     for f in files:
         ui.write("%40s %3s %s\n" % (hex(m[f]),
                                     m.execf(f) and "755" or "644", f))
 
 def merge(ui, repo, node=None, force=None, branch=None):
     """Merge working directory with another revision
 
     Merge the contents of the current working directory and the
     requested revision. Files that changed between either parent are
     marked as changed for the next commit and a commit must be
     performed before any further updates are allowed.
 
     If no revision is specified, the working directory's parent is a
     head revision, and the repository contains exactly one other head,
     the other head is merged with by default.  Otherwise, an explicit
     revision to merge with must be provided.
     """
 
     if node or branch:
         node = _lookup(repo, node, branch)
     else:
         heads = repo.heads()
         if len(heads) > 2:
             raise util.Abort(_('repo has %d heads - '
                                'please merge with an explicit rev') %
                              len(heads))
         if len(heads) == 1:
             raise util.Abort(_('there is nothing to merge - '
                                'use "hg update" instead'))
         parent = repo.dirstate.parents()[0]
         if parent not in heads:
             raise util.Abort(_('working dir not at a head rev - '
                                'use "hg update" or merge with an explicit rev'))
         node = parent == heads[0] and heads[-1] or heads[0]
     return hg.merge(repo, node, force=force)
 
 def outgoing(ui, repo, dest=None, **opts):
     """show changesets not found in destination
 
     Show changesets not found in the specified destination repository or
     the default push location. These are the changesets that would be pushed
     if a push was requested.
 
     See pull for valid destination format details.
     """
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     setremoteconfig(ui, opts)
     revs = None
     if opts['rev']:
         revs = [repo.lookup(rev) for rev in opts['rev']]
 
     other = hg.repository(ui, dest)
     o = repo.findoutgoing(other, force=opts['force'])
     if not o:
         ui.status(_("no changes found\n"))
         return
     o = repo.changelog.nodesbetween(o, revs)[0]
     if opts['newest_first']:
         o.reverse()
     displayer = show_changeset(ui, repo, opts)
     for n in o:
         parents = [p for p in repo.changelog.parents(n) if p != nullid]
         if opts['no_merges'] and len(parents) == 2:
             continue
         displayer.show(changenode=n)
         if opts['patch']:
             prev = (parents and parents[0]) or nullid
             patch.diff(repo, prev, n)
             ui.write("\n")
 
 def parents(ui, repo, file_=None, rev=None, branches=None, **opts):
     """show the parents of the working dir or revision
 
     Print the working directory's parent revisions.
     """
     # legacy
     if file_ and not rev:
         try:
             rev = repo.lookup(file_)
             file_ = None
         except hg.RepoError:
             pass
         else:
             ui.warn(_("'hg parent REV' is deprecated, "
                       "please use 'hg parents -r REV instead\n"))
 
     if rev:
         if file_:
             ctx = repo.filectx(file_, changeid=rev)
         else:
             ctx = repo.changectx(rev)
         p = [cp.node() for cp in ctx.parents()]
     else:
         p = repo.dirstate.parents()
 
     br = None
     if branches is not None:
         br = repo.branchlookup(p)
     displayer = show_changeset(ui, repo, opts)
     for n in p:
         if n != nullid:
             displayer.show(changenode=n, brinfo=br)
 
 def paths(ui, repo, search=None):
     """show definition of symbolic path names
 
     Show definition of symbolic path name NAME. If no name is given, show
     definition of available names.
 
     Path names are defined in the [paths] section of /etc/mercurial/hgrc
     and $HOME/.hgrc.  If run inside a repository, .hg/hgrc is used, too.
     """
     if search:
         for name, path in ui.configitems("paths"):
             if name == search:
                 ui.write("%s\n" % path)
                 return
         ui.warn(_("not found!\n"))
         return 1
     else:
         for name, path in ui.configitems("paths"):
             ui.write("%s = %s\n" % (name, path))
 
 def postincoming(ui, repo, modheads, optupdate):
     if modheads == 0:
         return
     if optupdate:
         if modheads == 1:
             return hg.update(repo, repo.changelog.tip()) # update
         else:
             ui.status(_("not updating, since new heads added\n"))
     if modheads > 1:
         ui.status(_("(run 'hg heads' to see heads, 'hg merge' to merge)\n"))
     else:
         ui.status(_("(run 'hg update' to get a working copy)\n"))
 
 def pull(ui, repo, source="default", **opts):
     """pull changes from the specified source
 
     Pull changes from a remote repository to a local one.
 
     This finds all changes from the repository at the specified path
     or URL and adds them to the local repository. By default, this
     does not update the copy of the project in the working directory.
 
     Valid URLs are of the form:
 
       local/filesystem/path
       http://[user@]host[:port]/[path]
       https://[user@]host[:port]/[path]
       ssh://[user@]host[:port]/[path]
 
     Some notes about using SSH with Mercurial:
     - SSH requires an accessible shell account on the destination machine
       and a copy of hg in the remote path or specified with as remotecmd.
     - path is relative to the remote user's home directory by default.
       Use an extra slash at the start of a path to specify an absolute path:
         ssh://example.com//tmp/repository
     - Mercurial doesn't use its own compression via SSH; the right thing
       to do is to configure it in your ~/.ssh/ssh_config, e.g.:
         Host *.mylocalnetwork.example.com
           Compression off
         Host *
           Compression on
       Alternatively specify "ssh -C" as your ssh command in your hgrc or
       with the --ssh command line option.
     """
     source = ui.expandpath(source)
     setremoteconfig(ui, opts)
 
     other = hg.repository(ui, source)
     ui.status(_('pulling from %s\n') % (source))
     revs = None
     if opts['rev'] and not other.local():
         raise util.Abort(_("pull -r doesn't work for remote repositories yet"))
     elif opts['rev']:
         revs = [other.lookup(rev) for rev in opts['rev']]
     modheads = repo.pull(other, heads=revs, force=opts['force'])
     return postincoming(ui, repo, modheads, opts['update'])
 
 def push(ui, repo, dest=None, **opts):
     """push changes to the specified destination
 
     Push changes from the local repository to the given destination.
 
     This is the symmetrical operation for pull. It helps to move
     changes from the current repository to a different one. If the
     destination is local this is identical to a pull in that directory
     from the current one.
 
     By default, push will refuse to run if it detects the result would
     increase the number of remote heads. This generally indicates the
     the client has forgotten to sync and merge before pushing.
 
     Valid URLs are of the form:
 
       local/filesystem/path
       ssh://[user@]host[:port]/[path]
 
     Look at the help text for the pull command for important details
     about ssh:// URLs.
 
     Pushing to http:// and https:// URLs is possible, too, if this
     feature is enabled on the remote Mercurial server.
     """
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     setremoteconfig(ui, opts)
 
     other = hg.repository(ui, dest)
     ui.status('pushing to %s\n' % (dest))
     revs = None
     if opts['rev']:
         revs = [repo.lookup(rev) for rev in opts['rev']]
     r = repo.push(other, opts['force'], revs=revs)
     return r == 0
 
 def rawcommit(ui, repo, *flist, **rc):
     """raw commit interface (DEPRECATED)
 
     (DEPRECATED)
     Lowlevel commit, for use in helper scripts.
 
     This command is not intended to be used by normal users, as it is
     primarily useful for importing from other SCMs.
 
     This command is now deprecated and will be removed in a future
     release, please use debugsetparents and commit instead.
     """
 
     ui.warn(_("(the rawcommit command is deprecated)\n"))
 
     message = rc['message']
     if not message and rc['logfile']:
         try:
             message = open(rc['logfile']).read()
         except IOError:
             pass
     if not message and not rc['logfile']:
         raise util.Abort(_("missing commit message"))
 
     files = relpath(repo, list(flist))
     if rc['files']:
         files += open(rc['files']).read().splitlines()
 
     rc['parent'] = map(repo.lookup, rc['parent'])
 
     try:
         repo.rawcommit(files, message, rc['user'], rc['date'], *rc['parent'])
     except ValueError, inst:
         raise util.Abort(str(inst))
 
 def recover(ui, repo):
     """roll back an interrupted transaction
 
     Recover from an interrupted commit or pull.
 
     This command tries to fix the repository status after an interrupted
     operation. It should only be necessary when Mercurial suggests it.
     """
     if repo.recover():
         return hg.verify(repo)
     return 1
 
 def remove(ui, repo, *pats, **opts):
     """remove the specified files on the next commit
 
     Schedule the indicated files for removal from the repository.
 
     This command schedules the files to be removed at the next commit.
     This only removes files from the current branch, not from the
     entire project history.  If the files still exist in the working
     directory, they will be deleted from it.  If invoked with --after,
     files that have been manually deleted are marked as removed.
 
     Modified files and added files are not removed by default.  To
     remove them, use the -f/--force option.
     """
     names = []
     if not opts['after'] and not pats:
         raise util.Abort(_('no files specified'))
     files, matchfn, anypats = cmdutil.matchpats(repo, pats, opts)
     exact = dict.fromkeys(files)
     mardu = map(dict.fromkeys, repo.status(files=files, match=matchfn))[:5]
     modified, added, removed, deleted, unknown = mardu
     remove, forget = [], []
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts):
         reason = None
         if abs not in deleted and opts['after']:
             reason = _('is still present')
         elif abs in modified and not opts['force']:
             reason = _('is modified (use -f to force removal)')
         elif abs in added:
             if opts['force']:
                 forget.append(abs)
                 continue
             reason = _('has been marked for add (use -f to force removal)')
         elif abs in unknown:
             reason = _('is not managed')
         elif abs in removed:
             continue
         if reason:
             if exact:
                 ui.warn(_('not removing %s: file %s\n') % (rel, reason))
         else:
             if ui.verbose or not exact:
                 ui.status(_('removing %s\n') % rel)
             remove.append(abs)
     repo.forget(forget)
     repo.remove(remove, unlink=not opts['after'])
 
 def rename(ui, repo, *pats, **opts):
     """rename files; equivalent of copy + remove
 
     Mark dest as copies of sources; mark sources for deletion.  If
     dest is a directory, copies are put in that directory.  If dest is
     a file, there can only be one source.
 
     By default, this command copies the contents of files as they
     stand in the working directory.  If invoked with --after, the
     operation is recorded, but no copying is performed.
 
     This command takes effect in the next commit.
 
     NOTE: This command should be treated as experimental. While it
     should properly record rename files, this information is not yet
     fully used by merge, nor fully reported by log.
     """
     wlock = repo.wlock(0)
     errs, copied = docopy(ui, repo, pats, opts, wlock)
     names = []
     for abs, rel, exact in copied:
         if ui.verbose or not exact:
             ui.status(_('removing %s\n') % rel)
         names.append(abs)
     if not opts.get('dry_run'):
         repo.remove(names, True, wlock)
     return errs
 
 def revert(ui, repo, *pats, **opts):
     """revert files or dirs to their states as of some revision
 
     With no revision specified, revert the named files or directories
     to the contents they had in the parent of the working directory.
     This restores the contents of the affected files to an unmodified
     state.  If the working directory has two parents, you must
     explicitly specify the revision to revert to.
 
     Modified files are saved with a .orig suffix before reverting.
     To disable these backups, use --no-backup.
 
     Using the -r option, revert the given files or directories to their
     contents as of a specific revision. This can be helpful to "roll
     back" some or all of a change that should not have been committed.
 
     Revert modifies the working directory.  It does not commit any
     changes, or change the parent of the working directory.  If you
     revert to a revision other than the parent of the working
     directory, the reverted files will thus appear modified
     afterwards.
 
     If a file has been deleted, it is recreated.  If the executable
     mode of a file was changed, it is reset.
 
     If names are given, all files matching the names are reverted.
 
     If no arguments are given, no files are reverted.
     """
 
     if not pats and not opts['all']:
         raise util.Abort(_('no files or directories specified; '
                            'use --all to revert the whole repo'))
 
     parent, p2 = repo.dirstate.parents()
     if opts['rev']:
         node = repo.lookup(opts['rev'])
     elif p2 != nullid:
         raise util.Abort(_('working dir has two parents; '
                            'you must specify the revision to revert to'))
     else:
         node = parent
     mf = repo.manifest.read(repo.changelog.read(node)[0])
     if node == parent:
         pmf = mf
     else:
         pmf = None
 
     wlock = repo.wlock()
 
     # need all matching names in dirstate and manifest of target rev,
     # so have to walk both. do not print errors if files exist in one
     # but not other.
 
     names = {}
     target_only = {}
 
     # walk dirstate.
 
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts,
                                              badmatch=mf.has_key):
         names[abs] = (rel, exact)
         if src == 'b':
             target_only[abs] = True
 
     # walk target manifest.
 
     for src, abs, rel, exact in cmdutil.walk(repo, pats, opts, node=node,
                                              badmatch=names.has_key):
         if abs in names: continue
         names[abs] = (rel, exact)
         target_only[abs] = True
 
     changes = repo.status(match=names.has_key, wlock=wlock)[:5]
     modified, added, removed, deleted, unknown = map(dict.fromkeys, changes)
 
     revert = ([], _('reverting %s\n'))
     add = ([], _('adding %s\n'))
     remove = ([], _('removing %s\n'))
     forget = ([], _('forgetting %s\n'))
     undelete = ([], _('undeleting %s\n'))
     update = {}
 
     disptable = (
         # dispatch table:
         #   file state
         #   action if in target manifest
         #   action if not in target manifest
         #   make backup if in target manifest
         #   make backup if not in target manifest
         (modified, revert, remove, True, True),
         (added, revert, forget, True, False),
         (removed, undelete, None, False, False),
         (deleted, revert, remove, False, False),
         (unknown, add, None, True, False),
         (target_only, add, None, False, False),
         )
 
     entries = names.items()
     entries.sort()
 
     for abs, (rel, exact) in entries:
         mfentry = mf.get(abs)
         def handle(xlist, dobackup):
             xlist[0].append(abs)
             update[abs] = 1
             if dobackup and not opts['no_backup'] and os.path.exists(rel):
                 bakname = "%s.orig" % rel
                 ui.note(_('saving current version of %s as %s\n') %
                         (rel, bakname))
                 if not opts.get('dry_run'):
                     shutil.copyfile(rel, bakname)
                     shutil.copymode(rel, bakname)
             if ui.verbose or not exact:
                 ui.status(xlist[1] % rel)
         for table, hitlist, misslist, backuphit, backupmiss in disptable:
             if abs not in table: continue
             # file has changed in dirstate
             if mfentry:
                 handle(hitlist, backuphit)
             elif misslist is not None:
                 handle(misslist, backupmiss)
             else:
                 if exact: ui.warn(_('file not managed: %s\n' % rel))
             break
         else:
             # file has not changed in dirstate
             if node == parent:
                 if exact: ui.warn(_('no changes needed to %s\n' % rel))
                 continue
             if pmf is None:
                 # only need parent manifest in this unlikely case,
                 # so do not read by default
                 pmf = repo.manifest.read(repo.changelog.read(parent)[0])
             if abs in pmf:
                 if mfentry:
                     # if version of file is same in parent and target
                     # manifests, do nothing
                     if pmf[abs] != mfentry:
                         handle(revert, False)
                 else:
                     handle(remove, False)
 
     if not opts.get('dry_run'):
         repo.dirstate.forget(forget[0])
         r = hg.revert(repo, node, update.has_key, wlock)
         repo.dirstate.update(add[0], 'a')
         repo.dirstate.update(undelete[0], 'n')
         repo.dirstate.update(remove[0], 'r')
         return r
 
 def rollback(ui, repo):
     """roll back the last transaction in this repository
 
     Roll back the last transaction in this repository, restoring the
     project to its state prior to the transaction.
 
     Transactions are used to encapsulate the effects of all commands
     that create new changesets or propagate existing changesets into a
     repository. For example, the following commands are transactional,
     and their effects can be rolled back:
 
       commit
       import
       pull
       push (with this repository as destination)
       unbundle
 
     This command should be used with care. There is only one level of
     rollback, and there is no way to undo a rollback.
 
     This command is not intended for use on public repositories. Once
     changes are visible for pull by other users, rolling a transaction
     back locally is ineffective (someone else may already have pulled
     the changes). Furthermore, a race is possible with readers of the
     repository; for example an in-progress pull from the repository
     may fail if a rollback is performed.
     """
     repo.rollback()
 
 def root(ui, repo):
     """print the root (top) of the current working dir
 
     Print the root directory of the current repository.
     """
     ui.write(repo.root + "\n")
 
 def serve(ui, repo, **opts):
     """export the repository via HTTP
 
     Start a local HTTP repository browser and pull server.
 
     By default, the server logs accesses to stdout and errors to
     stderr.  Use the "-A" and "-E" options to log to files.
     """
 
     if opts["stdio"]:
         if repo is None:
             raise hg.RepoError(_('no repo found'))
         s = sshserver.sshserver(ui, repo)
         s.serve_forever()
 
     optlist = ("name templates style address port ipv6"
                " accesslog errorlog webdir_conf")
     for o in optlist.split():
         if opts[o]:
             ui.setconfig("web", o, opts[o])
 
     if repo is None and not ui.config("web", "webdir_conf"):
         raise hg.RepoError(_('no repo found'))
 
     if opts['daemon'] and not opts['daemon_pipefds']:
         rfd, wfd = os.pipe()
         args = sys.argv[:]
         args.append('--daemon-pipefds=%d,%d' % (rfd, wfd))
         pid = os.spawnvp(os.P_NOWAIT | getattr(os, 'P_DETACH', 0),
                          args[0], args)
         os.close(wfd)
         os.read(rfd, 1)
         os._exit(0)
 
     try:
         httpd = hgweb.server.create_server(ui, repo)
     except socket.error, inst:
-        raise util.Abort(_('cannot start server: ') + inst.args[1])
+        raise util.Abort(_('cannot start server: %s') % inst.args[1])
 
     if ui.verbose:
         addr, port = httpd.socket.getsockname()
         if addr == '0.0.0.0':
             addr = socket.gethostname()
         else:
             try:
                 addr = socket.gethostbyaddr(addr)[0]
             except socket.error:
                 pass
         if port != 80:
             ui.status(_('listening at http://%s:%d/\n') % (addr, port))
         else:
             ui.status(_('listening at http://%s/\n') % addr)
 
     if opts['pid_file']:
         fp = open(opts['pid_file'], 'w')
         fp.write(str(os.getpid()) + '\n')
         fp.close()
 
     if opts['daemon_pipefds']:
         rfd, wfd = [int(x) for x in opts['daemon_pipefds'].split(',')]
         os.close(rfd)
         os.write(wfd, 'y')
         os.close(wfd)
         sys.stdout.flush()
         sys.stderr.flush()
         fd = os.open(util.nulldev, os.O_RDWR)
         if fd != 0: os.dup2(fd, 0)
         if fd != 1: os.dup2(fd, 1)
         if fd != 2: os.dup2(fd, 2)
         if fd not in (0, 1, 2): os.close(fd)
 
     httpd.serve_forever()
 
 def status(ui, repo, *pats, **opts):
     """show changed files in the working directory
 
     Show status of files in the repository.  If names are given, only
     files that match are shown.  Files that are clean or ignored, are
     not listed unless -c (clean), -i (ignored) or -A is given.
 
     The codes used to show the status of files are:
     M = modified
     A = added
     R = removed
     C = clean
     ! = deleted, but still tracked
     ? = not tracked
     I = ignored (not shown by default)
       = the previous added file was copied from here
     """
 
     all = opts['all']
     
     files, matchfn, anypats = cmdutil.matchpats(repo, pats, opts)
     cwd = (pats and repo.getcwd()) or ''
     modified, added, removed, deleted, unknown, ignored, clean = [
         [util.pathto(cwd, x) for x in n]
         for n in repo.status(files=files, match=matchfn,
                              list_ignored=all or opts['ignored'],
                              list_clean=all or opts['clean'])]
 
     changetypes = (('modified', 'M', modified),
                    ('added', 'A', added),
                    ('removed', 'R', removed),
                    ('deleted', '!', deleted),
                    ('unknown', '?', unknown),
                    ('ignored', 'I', ignored))
 
     explicit_changetypes = changetypes + (('clean', 'C', clean),)
 
     end = opts['print0'] and '\0' or '\n'
 
     for opt, char, changes in ([ct for ct in explicit_changetypes
                                 if all or opts[ct[0]]]
                                or changetypes):
         if opts['no_status']:
             format = "%%s%s" % end
         else:
             format = "%s %%s%s" % (char, end)
 
         for f in changes:
             ui.write(format % f)
             if ((all or opts.get('copies')) and not opts.get('no_status')
                 and opt == 'added' and repo.dirstate.copies.has_key(f)):
                 ui.write('  %s%s' % (repo.dirstate.copies[f], end))
 
 def tag(ui, repo, name, rev_=None, **opts):
     """add a tag for the current tip or a given revision
 
     Name a particular revision using <name>.
 
     Tags are used to name particular revisions of the repository and are
     very useful to compare different revision, to go back to significant
     earlier versions or to mark branch points as releases, etc.
 
     If no revision is given, the parent of the working directory is used.
 
     To facilitate version control, distribution, and merging of tags,
     they are stored as a file named ".hgtags" which is managed
     similarly to other project files and can be hand-edited if
     necessary.  The file '.hg/localtags' is used for local tags (not
     shared among repositories).
     """
     if name in ['tip', '.']:
         raise util.Abort(_("the name '%s' is reserved") % name)
     if rev_ is not None:
         ui.warn(_("use of 'hg tag NAME [REV]' is deprecated, "
                   "please use 'hg tag [-r REV] NAME' instead\n"))
         if opts['rev']:
             raise util.Abort(_("use only one form to specify the revision"))
     if opts['rev']:
         rev_ = opts['rev']
     if rev_:
         r = repo.lookup(rev_)
     else:
         p1, p2 = repo.dirstate.parents()
         if p1 == nullid:
             raise util.Abort(_('no revision to tag'))
         if p2 != nullid:
             raise util.Abort(_('outstanding uncommitted merges'))
         r = p1
 
     message = opts['message']
     if not message:
         message = _('Added tag %s for changeset %s') % (name, short(r))
 
     repo.tag(name, r, message, opts['local'], opts['user'], opts['date'])
 
 def tags(ui, repo):
     """list repository tags
 
     List the repository tags.
 
     This lists both regular and local tags.
     """
 
     l = repo.tagslist()
     l.reverse()
     hexfunc = ui.debugflag and hex or short
     for t, n in l:
         try:
             r = "%5d:%s" % (repo.changelog.rev(n), hexfunc(n))
         except KeyError:
             r = "    ?:?"
         if ui.quiet:
             ui.write("%s\n" % t)
         else:
             ui.write("%-30s %s\n" % (t, r))
 
 def tip(ui, repo, **opts):
     """show the tip revision
 
     Show the tip revision.
     """
     n = repo.changelog.tip()
     br = None
     if opts['branches']:
         br = repo.branchlookup([n])
     show_changeset(ui, repo, opts).show(changenode=n, brinfo=br)
     if opts['patch']:
         patch.diff(repo, repo.changelog.parents(n)[0], n)
 
 def unbundle(ui, repo, fname, **opts):
     """apply a changegroup file
 
     Apply a compressed changegroup file generated by the bundle
     command.
     """
     f = urllib.urlopen(fname)
 
     header = f.read(6)
     if not header.startswith("HG"):
         raise util.Abort(_("%s: not a Mercurial bundle file") % fname)
     elif not header.startswith("HG10"):
         raise util.Abort(_("%s: unknown bundle version") % fname)
     elif header == "HG10BZ":
         def generator(f):
             zd = bz2.BZ2Decompressor()
             zd.decompress("BZ")
             for chunk in f:
                 yield zd.decompress(chunk)
     elif header == "HG10UN":
         def generator(f):
             for chunk in f:
                 yield chunk
     else:
         raise util.Abort(_("%s: unknown bundle compression type")
                          % fname)
     gen = generator(util.filechunkiter(f, 4096))
     modheads = repo.addchangegroup(util.chunkbuffer(gen), 'unbundle',
                                    'bundle:' + fname)
     return postincoming(ui, repo, modheads, opts['update'])
 
 def undo(ui, repo):
     """undo the last commit or pull (DEPRECATED)
 
     (DEPRECATED)
     This command is now deprecated and will be removed in a future
     release. Please use the rollback command instead.  For usage
     instructions, see the rollback command.
     """
     ui.warn(_('(the undo command is deprecated; use rollback instead)\n'))
     repo.rollback()
 
 def update(ui, repo, node=None, merge=False, clean=False, force=None,
            branch=None):
     """update or merge working directory
 
     Update the working directory to the specified revision.
 
     If there are no outstanding changes in the working directory and
     there is a linear relationship between the current version and the
     requested version, the result is the requested version.
 
     To merge the working directory with another revision, use the
     merge command.
 
     By default, update will refuse to run if doing so would require
     merging or discarding local changes.
     """
     node = _lookup(repo, node, branch)
     if merge:
         ui.warn(_('(the -m/--merge option is deprecated; '
                   'use the merge command instead)\n'))
         return hg.merge(repo, node, force=force)
     elif clean:
         return hg.clean(repo, node)
     else:
         return hg.update(repo, node)
 
 def _lookup(repo, node, branch=None):
     if branch:
         br = repo.branchlookup(branch=branch)
         found = []
         for x in br:
             if branch in br[x]:
                 found.append(x)
         if len(found) > 1:
             repo.ui.warn(_("Found multiple heads for %s\n") % branch)
             for x in found:
                 show_changeset(ui, repo, {}).show(changenode=x, brinfo=br)
             raise util.Abort("")
         if len(found) == 1:
             node = found[0]
             repo.ui.warn(_("Using head %s for branch %s\n")
                          % (short(node), branch))
         else:
-            raise util.Abort(_("branch %s not found\n") % (branch))
+            raise util.Abort(_("branch %s not found") % branch)
     else:
         node = node and repo.lookup(node) or repo.changelog.tip()
     return node
 
 def verify(ui, repo):
     """verify the integrity of the repository
 
     Verify the integrity of the current repository.
 
     This will perform an extensive check of the repository's
     integrity, validating the hashes and checksums of each entry in
     the changelog, manifest, and tracked files, as well as the
     integrity of their crosslinks and indices.
     """
     return hg.verify(repo)
 
 # Command options and aliases are listed here, alphabetically
 
 table = {
     "^add":
         (add,
          [('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns')),
           ('n', 'dry-run', None, _('do not perform actions, just print output'))],
          _('hg add [OPTION]... [FILE]...')),
     "addremove":
         (addremove,
          [('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns')),
           ('n', 'dry-run', None,
            _('do not perform actions, just print output')),
           ('s', 'similarity', '',
            _('guess renamed files by similarity (0<=s<=1)'))],
          _('hg addremove [OPTION]... [FILE]...')),
     "^annotate":
         (annotate,
          [('r', 'rev', '', _('annotate the specified revision')),
           ('a', 'text', None, _('treat all files as text')),
           ('u', 'user', None, _('list the author')),
           ('d', 'date', None, _('list the date')),
           ('n', 'number', None, _('list the revision number (default)')),
           ('c', 'changeset', None, _('list the changeset')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg annotate [-r REV] [-a] [-u] [-d] [-n] [-c] FILE...')),
     "archive":
         (archive,
          [('', 'no-decode', None, _('do not pass files through decoders')),
           ('p', 'prefix', '', _('directory prefix for files in archive')),
           ('r', 'rev', '', _('revision to distribute')),
           ('t', 'type', '', _('type of distribution to create')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg archive [OPTION]... DEST')),
     "backout":
         (backout,
          [('', 'merge', None,
            _('merge with old dirstate parent after backout')),
           ('m', 'message', '', _('use <text> as commit message')),
           ('l', 'logfile', '', _('read commit message from <file>')),
           ('d', 'date', '', _('record datecode as commit date')),
           ('', 'parent', '', _('parent to choose when backing out merge')),
           ('u', 'user', '', _('record user as committer')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg backout [OPTION]... REV')),
     "bundle":
         (bundle,
          [('f', 'force', None,
            _('run even when remote repository is unrelated'))],
          _('hg bundle FILE DEST')),
     "cat":
         (cat,
          [('o', 'output', '', _('print output to file with formatted name')),
           ('r', 'rev', '', _('print the given revision')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg cat [OPTION]... FILE...')),
     "^clone":
         (clone,
          [('U', 'noupdate', None, _('do not update the new working directory')),
           ('r', 'rev', [],
            _('a changeset you would like to have after cloning')),
           ('', 'pull', None, _('use pull protocol to copy metadata')),
           ('', 'uncompressed', None,
            _('use uncompressed transfer (fast over LAN)')),
           ('e', 'ssh', '', _('specify ssh command to use')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg clone [OPTION]... SOURCE [DEST]')),
     "^commit|ci":
         (commit,
          [('A', 'addremove', None,
            _('mark new/missing files as added/removed before committing')),
           ('m', 'message', '', _('use <text> as commit message')),
           ('l', 'logfile', '', _('read the commit message from <file>')),
           ('d', 'date', '', _('record datecode as commit date')),
           ('u', 'user', '', _('record user as commiter')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg commit [OPTION]... [FILE]...')),
     "copy|cp":
         (copy,
          [('A', 'after', None, _('record a copy that has already occurred')),
           ('f', 'force', None,
            _('forcibly copy over an existing managed file')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns')),
           ('n', 'dry-run', None, _('do not perform actions, just print output'))],
          _('hg copy [OPTION]... [SOURCE]... DEST')),
     "debugancestor": (debugancestor, [], _('debugancestor INDEX REV1 REV2')),
     "debugcomplete":
         (debugcomplete,
          [('o', 'options', None, _('show the command options'))],
          _('debugcomplete [-o] CMD')),
     "debugrebuildstate":
         (debugrebuildstate,
          [('r', 'rev', '', _('revision to rebuild to'))],
          _('debugrebuildstate [-r REV] [REV]')),
     "debugcheckstate": (debugcheckstate, [], _('debugcheckstate')),
     "debugconfig": (debugconfig, [], _('debugconfig [NAME]...')),
     "debugsetparents": (debugsetparents, [], _('debugsetparents REV1 [REV2]')),
     "debugstate": (debugstate, [], _('debugstate')),
     "debugdata": (debugdata, [], _('debugdata FILE REV')),
     "debugindex": (debugindex, [], _('debugindex FILE')),
     "debugindexdot": (debugindexdot, [], _('debugindexdot FILE')),
     "debugrename": (debugrename, [], _('debugrename FILE [REV]')),
     "debugwalk":
         (debugwalk,
          [('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('debugwalk [OPTION]... [FILE]...')),
     "^diff":
         (diff,
          [('r', 'rev', [], _('revision')),
           ('a', 'text', None, _('treat all files as text')),
           ('p', 'show-function', None,
            _('show which function each change is in')),
           ('g', 'git', None, _('use git extended diff format')),
           ('w', 'ignore-all-space', None,
            _('ignore white space when comparing lines')),
           ('b', 'ignore-space-change', None,
            _('ignore changes in the amount of white space')),
           ('B', 'ignore-blank-lines', None,
            _('ignore changes whose lines are all blank')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg diff [-a] [-I] [-X] [-r REV1 [-r REV2]] [FILE]...')),
     "^export":
         (export,
          [('o', 'output', '', _('print output to file with formatted name')),
           ('a', 'text', None, _('treat all files as text')),
           ('g', 'git', None, _('use git extended diff format')),
           ('', 'switch-parent', None, _('diff against the second parent'))],
          _('hg export [-a] [-o OUTFILESPEC] REV...')),
     "debugforget|forget":
         (forget,
          [('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg forget [OPTION]... FILE...')),
     "grep":
         (grep,
          [('0', 'print0', None, _('end fields with NUL')),
           ('', 'all', None, _('print all revisions that match')),
           ('f', 'follow', None,
            _('follow changeset history, or file history across copies and renames')),
           ('i', 'ignore-case', None, _('ignore case when matching')),
           ('l', 'files-with-matches', None,
            _('print only filenames and revs that match')),
           ('n', 'line-number', None, _('print matching line numbers')),
           ('r', 'rev', [], _('search in given revision range')),
           ('u', 'user', None, _('print user who committed change')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg grep [OPTION]... PATTERN [FILE]...')),
     "heads":
         (heads,
          [('b', 'branches', None, _('show branches')),
           ('', 'style', '', _('display using template map file')),
           ('r', 'rev', '', _('show only heads which are descendants of rev')),
           ('', 'template', '', _('display with template'))],
          _('hg heads [-b] [-r <rev>]')),
     "help": (help_, [], _('hg help [COMMAND]')),
     "identify|id": (identify, [], _('hg identify')),
     "import|patch":
         (import_,
          [('p', 'strip', 1,
            _('directory strip option for patch. This has the same\n'
              'meaning as the corresponding patch option')),
           ('m', 'message', '', _('use <text> as commit message')),
           ('b', 'base', '', _('base path')),
           ('f', 'force', None,
            _('skip check for outstanding uncommitted changes'))],
          _('hg import [-p NUM] [-b BASE] [-m MESSAGE] [-f] PATCH...')),
     "incoming|in": (incoming,
          [('M', 'no-merges', None, _('do not show merges')),
           ('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('', 'style', '', _('display using template map file')),
           ('n', 'newest-first', None, _('show newest record first')),
           ('', 'bundle', '', _('file to store the bundles into')),
           ('p', 'patch', None, _('show patch')),
           ('r', 'rev', [], _('a specific revision up to which you would like to pull')),
           ('', 'template', '', _('display with template')),
           ('e', 'ssh', '', _('specify ssh command to use')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg incoming [-p] [-n] [-M] [-r REV]...'
            ' [--bundle FILENAME] [SOURCE]')),
     "^init":
         (init,
          [('e', 'ssh', '', _('specify ssh command to use')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg init [-e FILE] [--remotecmd FILE] [DEST]')),
     "locate":
         (locate,
          [('r', 'rev', '', _('search the repository as it stood at rev')),
           ('0', 'print0', None,
            _('end filenames with NUL, for use with xargs')),
           ('f', 'fullpath', None,
            _('print complete paths from the filesystem root')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg locate [OPTION]... [PATTERN]...')),
     "^log|history":
         (log,
          [('b', 'branches', None, _('show branches')),
           ('f', 'follow', None,
            _('follow changeset history, or file history across copies and renames')),
           ('', 'follow-first', None,
            _('only follow the first parent of merge changesets')),
           ('k', 'keyword', [], _('search for a keyword')),
           ('l', 'limit', '', _('limit number of changes displayed')),
           ('r', 'rev', [], _('show the specified revision or range')),
           ('M', 'no-merges', None, _('do not show merges')),
           ('', 'style', '', _('display using template map file')),
           ('m', 'only-merges', None, _('show only merges')),
           ('p', 'patch', None, _('show patch')),
           ('P', 'prune', [], _('do not display revision or any of its ancestors')),
           ('', 'template', '', _('display with template')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg log [OPTION]... [FILE]')),
     "manifest": (manifest, [], _('hg manifest [REV]')),
     "merge":
         (merge,
          [('b', 'branch', '', _('merge with head of a specific branch')),
           ('f', 'force', None, _('force a merge with outstanding changes'))],
          _('hg merge [-b TAG] [-f] [REV]')),
     "outgoing|out": (outgoing,
          [('M', 'no-merges', None, _('do not show merges')),
           ('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('p', 'patch', None, _('show patch')),
           ('', 'style', '', _('display using template map file')),
           ('r', 'rev', [], _('a specific revision you would like to push')),
           ('n', 'newest-first', None, _('show newest record first')),
           ('', 'template', '', _('display with template')),
           ('e', 'ssh', '', _('specify ssh command to use')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg outgoing [-M] [-p] [-n] [-r REV]... [DEST]')),
     "^parents":
         (parents,
          [('b', 'branches', None, _('show branches')),
           ('r', 'rev', '', _('show parents from the specified rev')),
           ('', 'style', '', _('display using template map file')),
           ('', 'template', '', _('display with template'))],
          _('hg parents [-b] [-r REV] [FILE]')),
     "paths": (paths, [], _('hg paths [NAME]')),
     "^pull":
         (pull,
          [('u', 'update', None,
            _('update the working directory to tip after pull')),
           ('e', 'ssh', '', _('specify ssh command to use')),
           ('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('r', 'rev', [], _('a specific revision up to which you would like to pull')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg pull [-u] [-r REV]... [-e FILE] [--remotecmd FILE] [SOURCE]')),
     "^push":
         (push,
          [('f', 'force', None, _('force push')),
           ('e', 'ssh', '', _('specify ssh command to use')),
           ('r', 'rev', [], _('a specific revision you would like to push')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg push [-f] [-r REV]... [-e FILE] [--remotecmd FILE] [DEST]')),
     "debugrawcommit|rawcommit":
         (rawcommit,
          [('p', 'parent', [], _('parent')),
           ('d', 'date', '', _('date code')),
           ('u', 'user', '', _('user')),
           ('F', 'files', '', _('file list')),
           ('m', 'message', '', _('commit message')),
           ('l', 'logfile', '', _('commit message file'))],
          _('hg debugrawcommit [OPTION]... [FILE]...')),
     "recover": (recover, [], _('hg recover')),
     "^remove|rm":
         (remove,
          [('A', 'after', None, _('record remove that has already occurred')),
           ('f', 'force', None, _('remove file even if modified')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg remove [OPTION]... FILE...')),
     "rename|mv":
         (rename,
          [('A', 'after', None, _('record a rename that has already occurred')),
           ('f', 'force', None,
            _('forcibly copy over an existing managed file')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns')),
           ('n', 'dry-run', None, _('do not perform actions, just print output'))],
          _('hg rename [OPTION]... SOURCE... DEST')),
     "^revert":
         (revert,
          [('a', 'all', None, _('revert all changes when no arguments given')),
           ('r', 'rev', '', _('revision to revert to')),
           ('', 'no-backup', None, _('do not save backup copies of files')),
           ('I', 'include', [], _('include names matching given patterns')),
           ('X', 'exclude', [], _('exclude names matching given patterns')),
           ('n', 'dry-run', None, _('do not perform actions, just print output'))],
          _('hg revert [-r REV] [NAME]...')),
     "rollback": (rollback, [], _('hg rollback')),
     "root": (root, [], _('hg root')),
     "^serve":
         (serve,
          [('A', 'accesslog', '', _('name of access log file to write to')),
           ('d', 'daemon', None, _('run server in background')),
           ('', 'daemon-pipefds', '', _('used internally by daemon mode')),
           ('E', 'errorlog', '', _('name of error log file to write to')),
           ('p', 'port', 0, _('port to use (default: 8000)')),
           ('a', 'address', '', _('address to use')),
           ('n', 'name', '',
            _('name to show in web pages (default: working dir)')),
           ('', 'webdir-conf', '', _('name of the webdir config file'
                                     ' (serve more than one repo)')),
           ('', 'pid-file', '', _('name of file to write process ID to')),
           ('', 'stdio', None, _('for remote clients')),
           ('t', 'templates', '', _('web templates to use')),
           ('', 'style', '', _('template style to use')),
           ('6', 'ipv6', None, _('use IPv6 in addition to IPv4'))],
          _('hg serve [OPTION]...')),
     "^status|st":
         (status,
          [('A', 'all', None, _('show status of all files')),
           ('m', 'modified', None, _('show only modified files')),
           ('a', 'added', None, _('show only added files')),
           ('r', 'removed', None, _('show only removed files')),
           ('d', 'deleted', None, _('show only deleted (but tracked) files')),
           ('c', 'clean', None, _('show only files without changes')),
           ('u', 'unknown', None, _('show only unknown (not tracked) files')),
           ('i', 'ignored', None, _('show ignored files')),
           ('n', 'no-status', None, _('hide status prefix')),
           ('C', 'copies', None, _('show source of copied files')),
           ('0', 'print0', None,
            _('end filenames with NUL, for use with xargs')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg status [OPTION]... [FILE]...')),
     "tag":
         (tag,
          [('l', 'local', None, _('make the tag local')),
           ('m', 'message', '', _('message for tag commit log entry')),
           ('d', 'date', '', _('record datecode as commit date')),
           ('u', 'user', '', _('record user as commiter')),
           ('r', 'rev', '', _('revision to tag'))],
          _('hg tag [-l] [-m TEXT] [-d DATE] [-u USER] [-r REV] NAME')),
     "tags": (tags, [], _('hg tags')),
     "tip":
         (tip,
          [('b', 'branches', None, _('show branches')),
           ('', 'style', '', _('display using template map file')),
           ('p', 'patch', None, _('show patch')),
           ('', 'template', '', _('display with template'))],
          _('hg tip [-b] [-p]')),
     "unbundle":
         (unbundle,
          [('u', 'update', None,
            _('update the working directory to tip after unbundle'))],
          _('hg unbundle [-u] FILE')),
     "debugundo|undo": (undo, [], _('hg undo')),
     "^update|up|checkout|co":
         (update,
          [('b', 'branch', '', _('checkout the head of a specific branch')),
           ('m', 'merge', None, _('allow merging of branches (DEPRECATED)')),
           ('C', 'clean', None, _('overwrite locally modified files')),
           ('f', 'force', None, _('force a merge with outstanding changes'))],
          _('hg update [-b TAG] [-m] [-C] [-f] [REV]')),
     "verify": (verify, [], _('hg verify')),
     "version": (show_version, [], _('hg version')),
 }
 
 globalopts = [
     ('R', 'repository', '',
      _('repository root directory or symbolic path name')),
     ('', 'cwd', '', _('change working directory')),
     ('y', 'noninteractive', None,
      _('do not prompt, assume \'yes\' for any required answers')),
     ('q', 'quiet', None, _('suppress output')),
     ('v', 'verbose', None, _('enable additional output')),
     ('', 'config', [], _('set/override config option')),
     ('', 'debug', None, _('enable debugging output')),
     ('', 'debugger', None, _('start debugger')),
     ('', 'lsprof', None, _('print improved command execution profile')),
     ('', 'traceback', None, _('print traceback on exception')),
     ('', 'time', None, _('time how long the command takes')),
     ('', 'profile', None, _('print command execution profile')),
     ('', 'version', None, _('output version information and exit')),
     ('h', 'help', None, _('display help and exit')),
 ]
 
 norepo = ("clone init version help debugancestor debugcomplete debugdata"
           " debugindex debugindexdot")
 optionalrepo = ("paths serve debugconfig")
 
 def findpossible(ui, cmd):
     """
     Return cmd -> (aliases, command table entry)
     for each matching command.
     Return debug commands (or their aliases) only if no normal command matches.
     """
     choice = {}
     debugchoice = {}
     for e in table.keys():
         aliases = e.lstrip("^").split("|")
         found = None
         if cmd in aliases:
             found = cmd
         elif not ui.config("ui", "strict"):
             for a in aliases:
                 if a.startswith(cmd):
                     found = a
                     break
         if found is not None:
             if aliases[0].startswith("debug"):
                 debugchoice[found] = (aliases, table[e])
             else:
                 choice[found] = (aliases, table[e])
 
     if not choice and debugchoice:
         choice = debugchoice
 
     return choice
 
 def findcmd(ui, cmd):
     """Return (aliases, command table entry) for command string."""
     choice = findpossible(ui, cmd)
 
     if choice.has_key(cmd):
         return choice[cmd]
 
     if len(choice) > 1:
         clist = choice.keys()
         clist.sort()
         raise AmbiguousCommand(cmd, clist)
 
     if choice:
         return choice.values()[0]
 
     raise UnknownCommand(cmd)
 
 def catchterm(*args):
     raise util.SignalInterrupt
 
 def run():
     sys.exit(dispatch(sys.argv[1:]))
 
 class ParseError(Exception):
     """Exception raised on errors in parsing the command line."""
 
 def parse(ui, args):
     options = {}
     cmdoptions = {}
 
     try:
         args = fancyopts.fancyopts(args, globalopts, options)
     except fancyopts.getopt.GetoptError, inst:
         raise ParseError(None, inst)
 
     if args:
         cmd, args = args[0], args[1:]
         aliases, i = findcmd(ui, cmd)
         cmd = aliases[0]
         defaults = ui.config("defaults", cmd)
         if defaults:
             args = shlex.split(defaults) + args
         c = list(i[1])
     else:
         cmd = None
         c = []
 
     # combine global options into local
     for o in globalopts:
         c.append((o[0], o[1], options[o[1]], o[3]))
 
     try:
         args = fancyopts.fancyopts(args, c, cmdoptions)
     except fancyopts.getopt.GetoptError, inst:
         raise ParseError(cmd, inst)
 
     # separate global options back out
     for o in globalopts:
         n = o[1]
         options[n] = cmdoptions[n]
         del cmdoptions[n]
 
     return (cmd, cmd and i[0] or None, args, options, cmdoptions)
 
 external = {}
 
 def findext(name):
     '''return module with given extension name'''
     try:
         return sys.modules[external[name]]
     except KeyError:
         for k, v in external.iteritems():
             if k.endswith('.' + name) or k.endswith('/' + name) or v == name:
                 return sys.modules[v]
         raise KeyError(name)
 
 def load_extensions(ui):
     added = []
     for ext_name, load_from_name in ui.extensions():
         if ext_name in external:
             continue
         try:
             if load_from_name:
                 # the module will be loaded in sys.modules
                 # choose an unique name so that it doesn't
                 # conflicts with other modules
                 module_name = "hgext_%s" % ext_name.replace('.', '_')
                 mod = imp.load_source(module_name, load_from_name)
             else:
                 def importh(name):
                     mod = __import__(name)
                     components = name.split('.')
                     for comp in components[1:]:
                         mod = getattr(mod, comp)
                     return mod
                 try:
                     mod = importh("hgext.%s" % ext_name)
                 except ImportError:
                     mod = importh(ext_name)
             external[ext_name] = mod.__name__
             added.append((mod, ext_name))
         except (util.SignalInterrupt, KeyboardInterrupt):
             raise
         except Exception, inst:
             ui.warn(_("*** failed to import extension %s: %s\n") %
                     (ext_name, inst))
             if ui.print_exc():
                 return 1
 
     for mod, name in added:
         uisetup = getattr(mod, 'uisetup', None)
         if uisetup:
             uisetup(ui)
         cmdtable = getattr(mod, 'cmdtable', {})
         for t in cmdtable:
             if t in table:
                 ui.warn(_("module %s overrides %s\n") % (name, t))
         table.update(cmdtable)
     
 def dispatch(args):
     for name in 'SIGBREAK', 'SIGHUP', 'SIGTERM':
         num = getattr(signal, name, None)
         if num: signal.signal(num, catchterm)
 
     try:
         u = ui.ui(traceback='--traceback' in sys.argv[1:])
     except util.Abort, inst:
         sys.stderr.write(_("abort: %s\n") % inst)
         return -1
 
     load_extensions(u)
     u.addreadhook(load_extensions)
 
     try:
         cmd, func, args, options, cmdoptions = parse(u, args)
         if options["time"]:
             def get_times():
                 t = os.times()
                 if t[4] == 0.0: # Windows leaves this as zero, so use time.clock()
                     t = (t[0], t[1], t[2], t[3], time.clock())
                 return t
             s = get_times()
             def print_time():
                 t = get_times()
                 u.warn(_("Time: real %.3f secs (user %.3f+%.3f sys %.3f+%.3f)\n") %
                     (t[4]-s[4], t[0]-s[0], t[2]-s[2], t[1]-s[1], t[3]-s[3]))
             atexit.register(print_time)
 
         u.updateopts(options["verbose"], options["debug"], options["quiet"],
                      not options["noninteractive"], options["traceback"],
                      options["config"])
 
         # enter the debugger before command execution
         if options['debugger']:
             pdb.set_trace()
 
         try:
             if options['cwd']:
                 try:
                     os.chdir(options['cwd'])
                 except OSError, inst:
                     raise util.Abort('%s: %s' %
                                      (options['cwd'], inst.strerror))
 
             path = u.expandpath(options["repository"]) or ""
             repo = path and hg.repository(u, path=path) or None
 
             if options['help']:
                 return help_(u, cmd, options['version'])
             elif options['version']:
                 return show_version(u)
             elif not cmd:
                 return help_(u, 'shortlist')
 
             if cmd not in norepo.split():
                 try:
                     if not repo:
                         repo = hg.repository(u, path=path)
                     u = repo.ui
                     for name in external.itervalues():
                         mod = sys.modules[name]
                         if hasattr(mod, 'reposetup'):
                             mod.reposetup(u, repo)
                             hg.repo_setup_hooks.append(mod.reposetup)
                 except hg.RepoError:
                     if cmd not in optionalrepo.split():
                         raise
                 d = lambda: func(u, repo, *args, **cmdoptions)
             else:
                 d = lambda: func(u, *args, **cmdoptions)
 
             # reupdate the options, repo/.hg/hgrc may have changed them
             u.updateopts(options["verbose"], options["debug"], options["quiet"],
                          not options["noninteractive"], options["traceback"],
                          options["config"])
 
             try:
                 if options['profile']:
                     import hotshot, hotshot.stats
                     prof = hotshot.Profile("hg.prof")
                     try:
                         try:
                             return prof.runcall(d)
                         except:
                             try:
                                 u.warn(_('exception raised - generating '
                                          'profile anyway\n'))
                             except:
                                 pass
                             raise
                     finally:
                         prof.close()
                         stats = hotshot.stats.load("hg.prof")
                         stats.strip_dirs()
                         stats.sort_stats('time', 'calls')
                         stats.print_stats(40)
                 elif options['lsprof']:
                     try:
                         from mercurial import lsprof
                     except ImportError:
                         raise util.Abort(_(
                             'lsprof not available - install from '
                             'http://codespeak.net/svn/user/arigo/hack/misc/lsprof/'))
                     p = lsprof.Profiler()
                     p.enable(subcalls=True)
                     try:
                         return d()
                     finally:
                         p.disable()
                         stats = lsprof.Stats(p.getstats())
                         stats.sort()
                         stats.pprint(top=10, file=sys.stderr, climit=5)
                 else:
                     return d()
             finally:
                 u.flush()
         except:
             # enter the debugger when we hit an exception
             if options['debugger']:
                 pdb.post_mortem(sys.exc_info()[2])
             u.print_exc()
             raise
     except ParseError, inst:
         if inst.args[0]:
             u.warn(_("hg %s: %s\n") % (inst.args[0], inst.args[1]))
             help_(u, inst.args[0])
         else:
             u.warn(_("hg: %s\n") % inst.args[1])
             help_(u, 'shortlist')
     except AmbiguousCommand, inst:
         u.warn(_("hg: command '%s' is ambiguous:\n    %s\n") %
                 (inst.args[0], " ".join(inst.args[1])))
     except UnknownCommand, inst:
         u.warn(_("hg: unknown command '%s'\n") % inst.args[0])
         help_(u, 'shortlist')
     except hg.RepoError, inst:
         u.warn(_("abort: %s!\n") % inst)
     except lock.LockHeld, inst:
         if inst.errno == errno.ETIMEDOUT:
             reason = _('timed out waiting for lock held by %s') % inst.locker
         else:
             reason = _('lock held by %s') % inst.locker
         u.warn(_("abort: %s: %s\n") % (inst.desc or inst.filename, reason))
     except lock.LockUnavailable, inst:
         u.warn(_("abort: could not lock %s: %s\n") %
                (inst.desc or inst.filename, inst.strerror))
     except revlog.RevlogError, inst:
-        u.warn(_("abort: "), inst, "!\n")
+        u.warn(_("abort: %s!\n") % inst)
     except util.SignalInterrupt:
         u.warn(_("killed!\n"))
     except KeyboardInterrupt:
         try:
             u.warn(_("interrupted!\n"))
         except IOError, inst:
             if inst.errno == errno.EPIPE:
                 if u.debugflag:
                     u.warn(_("\nbroken pipe\n"))
             else:
                 raise
     except IOError, inst:
         if hasattr(inst, "code"):
             u.warn(_("abort: %s\n") % inst)
         elif hasattr(inst, "reason"):
             u.warn(_("abort: error: %s\n") % inst.reason[1])
         elif hasattr(inst, "args") and inst[0] == errno.EPIPE:
             if u.debugflag:
                 u.warn(_("broken pipe\n"))
         elif getattr(inst, "strerror", None):
             if getattr(inst, "filename", None):
                 u.warn(_("abort: %s - %s\n") % (inst.strerror, inst.filename))
             else:
                 u.warn(_("abort: %s\n") % inst.strerror)
         else:
             raise
     except OSError, inst:
         if hasattr(inst, "filename"):
             u.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename))
         else:
             u.warn(_("abort: %s\n") % inst.strerror)
     except util.Abort, inst:
-        u.warn(_('abort: '), inst.args[0] % inst.args[1:], '\n')
+        u.warn(_("abort: %s\n") % inst)
     except TypeError, inst:
         # was this an argument error?
         tb = traceback.extract_tb(sys.exc_info()[2])
         if len(tb) > 2: # no
             raise
         u.debug(inst, "\n")
         u.warn(_("%s: invalid arguments\n") % cmd)
         help_(u, cmd)
     except SystemExit, inst:
         # Commands shouldn't sys.exit directly, but give a return code.
         # Just in case catch this and and pass exit code to caller.
         return inst.code
     except:
         u.warn(_("** unknown exception encountered, details follow\n"))
         u.warn(_("** report bug details to "
                  "http://www.selenic.com/mercurial/bts\n"))
         u.warn(_("** or [e-mail]\n"))
         u.warn(_("** Mercurial Distributed SCM (version %s)\n")
                % version.get_version())
         raise
 
     return -1

mercurial/hg.py

@@ -1,231 +1,231 b''
 # hg.py - repository classes for mercurial
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 # Copyright 2006 Vadim Gelfer <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from node import *
 from repo import *
 from demandload import *
 from i18n import gettext as _
 demandload(globals(), "localrepo bundlerepo httprepo sshrepo statichttprepo")
 demandload(globals(), "errno lock os shutil util merge@_merge verify@_verify")
 
 def _local(path):
     return (os.path.isfile(path and util.drop_scheme('file', path)) and
             bundlerepo or localrepo)
 
 schemes = {
     'bundle': bundlerepo,
     'file': _local,
     'hg': httprepo,
     'http': httprepo,
     'https': httprepo,
     'old-http': statichttprepo,
     'ssh': sshrepo,
     'static-http': statichttprepo,
     }
 
 def _lookup(path):
     scheme = 'file'
     if path:
         c = path.find(':')
         if c > 0:
             scheme = path[:c]
     thing = schemes.get(scheme) or schemes['file']
     try:
         return thing(path)
     except TypeError:
         return thing
 
 def islocal(repo):
     '''return true if repo or path is local'''
     if isinstance(repo, str):
         try:
             return _lookup(repo).islocal(repo)
         except AttributeError:
             return False
     return repo.local()
 
 repo_setup_hooks = []
 
 def repository(ui, path=None, create=False):
     """return a repository object for the specified path"""
     repo = _lookup(path).instance(ui, path, create)
     for hook in repo_setup_hooks:
         hook(ui, repo)
     return repo
 
 def defaultdest(source):
     '''return default destination of clone if none is given'''
     return os.path.basename(os.path.normpath(source))
 
 def clone(ui, source, dest=None, pull=False, rev=None, update=True,
           stream=False):
     """Make a copy of an existing repository.
 
     Create a copy of an existing repository in a new directory.  The
     source and destination are URLs, as passed to the repository
     function.  Returns a pair of repository objects, the source and
     newly created destination.
 
     The location of the source is added to the new repository's
     .hg/hgrc file, as the default to be used for future pulls and
     pushes.
 
     If an exception is raised, the partly cloned/updated destination
     repository will be deleted.
 
     Arguments:
 
     source: repository object or URL
 
     dest: URL of destination repository to create (defaults to base
     name of source repository)
 
     pull: always pull from source repository, even in local case
 
     stream: stream raw data uncompressed from repository (fast over
     LAN, slow over WAN)
 
     rev: revision to clone up to (implies pull=True)
 
     update: update working directory after clone completes, if
     destination is local repository
     """
     if isinstance(source, str):
         src_repo = repository(ui, source)
     else:
         src_repo = source
         source = src_repo.url()
 
     if dest is None:
         dest = defaultdest(source)
 
     def localpath(path):
         if path.startswith('file://'):
             return path[7:]
         if path.startswith('file:'):
             return path[5:]
         return path
 
     dest = localpath(dest)
     source = localpath(source)
 
     if os.path.exists(dest):
-        raise util.Abort(_("destination '%s' already exists"), dest)
+        raise util.Abort(_("destination '%s' already exists") % dest)
 
     class DirCleanup(object):
         def __init__(self, dir_):
             self.rmtree = shutil.rmtree
             self.dir_ = dir_
         def close(self):
             self.dir_ = None
         def __del__(self):
             if self.dir_:
                 self.rmtree(self.dir_, True)
 
     dest_repo = repository(ui, dest, create=True)
 
     dest_path = None
     dir_cleanup = None
     if dest_repo.local():
         dest_path = os.path.realpath(dest_repo.root)
         dir_cleanup = DirCleanup(dest_path)
 
     abspath = source
     copy = False
     if src_repo.local() and dest_repo.local():
         abspath = os.path.abspath(source)
         copy = not pull and not rev
 
     src_lock, dest_lock = None, None
     if copy:
         try:
             # we use a lock here because if we race with commit, we
             # can end up with extra data in the cloned revlogs that's
             # not pointed to by changesets, thus causing verify to
             # fail
             src_lock = src_repo.lock()
         except lock.LockException:
             copy = False
 
     if copy:
         # we lock here to avoid premature writing to the target
         dest_lock = lock.lock(os.path.join(dest_path, ".hg", "lock"))
 
         # we need to remove the (empty) data dir in dest so copyfiles
         # can do its work
         os.rmdir(os.path.join(dest_path, ".hg", "data"))
         files = "data 00manifest.d 00manifest.i 00changelog.d 00changelog.i"
         for f in files.split():
             src = os.path.join(source, ".hg", f)
             dst = os.path.join(dest_path, ".hg", f)
             try:
                 util.copyfiles(src, dst)
             except OSError, inst:
                 if inst.errno != errno.ENOENT:
                     raise
 
         # we need to re-init the repo after manually copying the data
         # into it
         dest_repo = repository(ui, dest)
 
     else:
         revs = None
         if rev:
             if not src_repo.local():
                 raise util.Abort(_("clone by revision not supported yet "
                                    "for remote repositories"))
             revs = [src_repo.lookup(r) for r in rev]
 
         if dest_repo.local():
             dest_repo.clone(src_repo, heads=revs, stream=stream)
         elif src_repo.local():
             src_repo.push(dest_repo, revs=revs)
         else:
             raise util.Abort(_("clone from remote to remote not supported"))
 
     if src_lock:
         src_lock.release()
 
     if dest_repo.local():
         fp = dest_repo.opener("hgrc", "w", text=True)
         fp.write("[paths]\n")
         fp.write("default = %s\n" % abspath)
         fp.close()
 
         if dest_lock:
             dest_lock.release()
 
         if update:
             _merge.update(dest_repo, dest_repo.changelog.tip())
     if dir_cleanup:
         dir_cleanup.close()
 
     return src_repo, dest_repo
 
 def update(repo, node):
     """update the working directory to node, merging linear changes"""
     return _merge.update(repo, node)
 
 def clean(repo, node, wlock=None, show_stats=True):
     """forcibly switch the working directory to node, clobbering changes"""
     return _merge.update(repo, node, force=True, wlock=wlock,
                          show_stats=show_stats)
 
 def merge(repo, node, force=None, remind=True, wlock=None):
     """branch merge with node, resolving changes"""
     return _merge.update(repo, node, branchmerge=True, force=force,
                          remind=remind, wlock=wlock)
 
 def revert(repo, node, choose, wlock):
     """revert changes to revision in node without updating dirstate"""
     return _merge.update(repo, node, force=True, partial=choose,
                          show_stats=False, wlock=wlock)
 
 def verify(repo):
     """verify the consistency of a repository"""
     return _verify.verify(repo)

mercurial/httprepo.py

@@ -1,352 +1,352 b''
 # httprepo.py - HTTP repository proxy classes for mercurial
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 # Copyright 2006 Vadim Gelfer <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from node import *
 from remoterepo import *
 from i18n import gettext as _
 from demandload import *
 demandload(globals(), "hg os urllib urllib2 urlparse zlib util httplib")
 demandload(globals(), "errno keepalive tempfile socket")
 
 class passwordmgr(urllib2.HTTPPasswordMgrWithDefaultRealm):
     def __init__(self, ui):
         urllib2.HTTPPasswordMgrWithDefaultRealm.__init__(self)
         self.ui = ui
 
     def find_user_password(self, realm, authuri):
         authinfo = urllib2.HTTPPasswordMgrWithDefaultRealm.find_user_password(
             self, realm, authuri)
         user, passwd = authinfo
         if user and passwd:
             return (user, passwd)
 
         if not self.ui.interactive:
             raise util.Abort(_('http authorization required'))
 
         self.ui.write(_("http authorization required\n"))
         self.ui.status(_("realm: %s\n") % realm)
         if user:
             self.ui.status(_("user: %s\n") % user)
         else:
             user = self.ui.prompt(_("user:"), default=None)
 
         if not passwd:
             passwd = self.ui.getpass()
 
         self.add_password(realm, authuri, user, passwd)
         return (user, passwd)
 
 def netlocsplit(netloc):
     '''split [user[:passwd]@]host[:port] into 4-tuple.'''
 
     a = netloc.find('@')
     if a == -1:
         user, passwd = None, None
     else:
         userpass, netloc = netloc[:a], netloc[a+1:]
         c = userpass.find(':')
         if c == -1:
             user, passwd = urllib.unquote(userpass), None
         else:
             user = urllib.unquote(userpass[:c])
             passwd = urllib.unquote(userpass[c+1:])
     c = netloc.find(':')
     if c == -1:
         host, port = netloc, None
     else:
         host, port = netloc[:c], netloc[c+1:]
     return host, port, user, passwd
 
 def netlocunsplit(host, port, user=None, passwd=None):
     '''turn host, port, user, passwd into [user[:passwd]@]host[:port].'''
     if port:
         hostport = host + ':' + port
     else:
         hostport = host
     if user:
         if passwd:
             userpass = urllib.quote(user) + ':' + urllib.quote(passwd)
         else:
             userpass = urllib.quote(user)
         return userpass + '@' + hostport
     return hostport
 
 class httpconnection(keepalive.HTTPConnection):
     # must be able to send big bundle as stream.
 
     def send(self, data):
         if isinstance(data, str):
             keepalive.HTTPConnection.send(self, data)
         else:
             # if auth required, some data sent twice, so rewind here
             data.seek(0)
             for chunk in util.filechunkiter(data):
                 keepalive.HTTPConnection.send(self, chunk)
 
 class basehttphandler(keepalive.HTTPHandler):
     def http_open(self, req):
         return self.do_open(httpconnection, req)
 
 has_https = hasattr(urllib2, 'HTTPSHandler')
 if has_https:
     class httpsconnection(httplib.HTTPSConnection):
         response_class = keepalive.HTTPResponse
         # must be able to send big bundle as stream.
 
         def send(self, data):
             if isinstance(data, str):
                 httplib.HTTPSConnection.send(self, data)
             else:
                 # if auth required, some data sent twice, so rewind here
                 data.seek(0)
                 for chunk in util.filechunkiter(data):
                     httplib.HTTPSConnection.send(self, chunk)
 
     class httphandler(basehttphandler, urllib2.HTTPSHandler):
         def https_open(self, req):
             return self.do_open(httpsconnection, req)
 else:
     class httphandler(basehttphandler):
         pass
 
 class httprepository(remoterepository):
     def __init__(self, ui, path):
         self.path = path
         self.caps = None
         scheme, netloc, urlpath, query, frag = urlparse.urlsplit(path)
         if query or frag:
             raise util.Abort(_('unsupported URL component: "%s"') %
                              (query or frag))
         if not urlpath: urlpath = '/'
         host, port, user, passwd = netlocsplit(netloc)
 
         # urllib cannot handle URLs with embedded user or passwd
         self._url = urlparse.urlunsplit((scheme, netlocunsplit(host, port),
                                          urlpath, '', ''))
         self.ui = ui
 
         proxyurl = ui.config("http_proxy", "host") or os.getenv('http_proxy')
         proxyauthinfo = None
         handler = httphandler()
 
         if proxyurl:
             # proxy can be proper url or host[:port]
             if not (proxyurl.startswith('http:') or
                     proxyurl.startswith('https:')):
                 proxyurl = 'http://' + proxyurl + '/'
             snpqf = urlparse.urlsplit(proxyurl)
             proxyscheme, proxynetloc, proxypath, proxyquery, proxyfrag = snpqf
             hpup = netlocsplit(proxynetloc)
 
             proxyhost, proxyport, proxyuser, proxypasswd = hpup
             if not proxyuser:
                 proxyuser = ui.config("http_proxy", "user")
                 proxypasswd = ui.config("http_proxy", "passwd")
 
             # see if we should use a proxy for this url
             no_list = [ "localhost", "127.0.0.1" ]
             no_list.extend([p.lower() for
                             p in ui.configlist("http_proxy", "no")])
             no_list.extend([p.strip().lower() for
                             p in os.getenv("no_proxy", '').split(',')
                             if p.strip()])
             # "http_proxy.always" config is for running tests on localhost
             if (not ui.configbool("http_proxy", "always") and
                 host.lower() in no_list):
                 ui.debug(_('disabling proxy for %s\n') % host)
             else:
                 proxyurl = urlparse.urlunsplit((
                     proxyscheme, netlocunsplit(proxyhost, proxyport,
                                                proxyuser, proxypasswd or ''),
                     proxypath, proxyquery, proxyfrag))
                 handler = urllib2.ProxyHandler({scheme: proxyurl})
                 ui.debug(_('proxying through %s\n') % proxyurl)
 
         # urllib2 takes proxy values from the environment and those
         # will take precedence if found, so drop them
         for env in ["HTTP_PROXY", "http_proxy", "no_proxy"]:
             try:
                 if os.environ.has_key(env):
                     del os.environ[env]
             except OSError:
                 pass
 
         passmgr = passwordmgr(ui)
         if user:
             ui.debug(_('http auth: user %s, password %s\n') %
                      (user, passwd and '*' * len(passwd) or 'not set'))
             passmgr.add_password(None, host, user, passwd or '')
 
         opener = urllib2.build_opener(
             handler,
             urllib2.HTTPBasicAuthHandler(passmgr),
             urllib2.HTTPDigestAuthHandler(passmgr))
 
         # 1.0 here is the _protocol_ version
         opener.addheaders = [('User-agent', 'mercurial/proto-1.0')]
         urllib2.install_opener(opener)
 
     def url(self):
         return self.path
 
     # look up capabilities only when needed
 
     def get_caps(self):
         if self.caps is None:
             try:
                 self.caps = self.do_read('capabilities').split()
             except hg.RepoError:
                 self.caps = ()
             self.ui.debug(_('capabilities: %s\n') %
                           (' '.join(self.caps or ['none'])))
         return self.caps
 
     capabilities = property(get_caps)
 
     def lock(self):
         raise util.Abort(_('operation not supported over http'))
 
     def do_cmd(self, cmd, **args):
         data = args.pop('data', None)
         headers = args.pop('headers', {})
         self.ui.debug(_("sending %s command\n") % cmd)
         q = {"cmd": cmd}
         q.update(args)
         qs = urllib.urlencode(q)
         cu = "%s?%s" % (self._url, qs)
         try:
             resp = urllib2.urlopen(urllib2.Request(cu, data, headers))
         except urllib2.HTTPError, inst:
             if inst.code == 401:
                 raise util.Abort(_('authorization failed'))
             raise
         except httplib.HTTPException, inst:
             self.ui.debug(_('http error while sending %s command\n') % cmd)
             self.ui.print_exc()
             raise IOError(None, inst)
         try:
             proto = resp.getheader('content-type')
         except AttributeError:
             proto = resp.headers['content-type']
 
         # accept old "text/plain" and "application/hg-changegroup" for now
         if not proto.startswith('application/mercurial') and \
                not proto.startswith('text/plain') and \
                not proto.startswith('application/hg-changegroup'):
             raise hg.RepoError(_("'%s' does not appear to be an hg repository") %
                                self._url)
 
         if proto.startswith('application/mercurial'):
             version = proto[22:]
             if float(version) > 0.1:
                 raise hg.RepoError(_("'%s' uses newer protocol %s") %
                                    (self._url, version))
 
         return resp
 
     def do_read(self, cmd, **args):
         fp = self.do_cmd(cmd, **args)
         try:
             return fp.read()
         finally:
             # if using keepalive, allow connection to be reused
             fp.close()
 
     def heads(self):
         d = self.do_read("heads")
         try:
             return map(bin, d[:-1].split(" "))
         except:
             self.ui.warn(_("unexpected response:\n") + d[:400] + "\n...\n")
             raise
 
     def branches(self, nodes):
         n = " ".join(map(hex, nodes))
         d = self.do_read("branches", nodes=n)
         try:
             br = [ tuple(map(bin, b.split(" "))) for b in d.splitlines() ]
             return br
         except:
             self.ui.warn(_("unexpected response:\n") + d[:400] + "\n...\n")
             raise
 
     def between(self, pairs):
         n = "\n".join(["-".join(map(hex, p)) for p in pairs])
         d = self.do_read("between", pairs=n)
         try:
             p = [ l and map(bin, l.split(" ")) or [] for l in d.splitlines() ]
             return p
         except:
             self.ui.warn(_("unexpected response:\n") + d[:400] + "\n...\n")
             raise
 
     def changegroup(self, nodes, kind):
         n = " ".join(map(hex, nodes))
         f = self.do_cmd("changegroup", roots=n)
         bytes = 0
 
         def zgenerator(f):
             zd = zlib.decompressobj()
             try:
                 for chnk in f:
                     yield zd.decompress(chnk)
             except httplib.HTTPException, inst:
                 raise IOError(None, _('connection ended unexpectedly'))
             yield zd.flush()
 
         return util.chunkbuffer(zgenerator(util.filechunkiter(f)))
 
     def unbundle(self, cg, heads, source):
         # have to stream bundle to a temp file because we do not have
         # http 1.1 chunked transfer.
 
         fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')
         fp = os.fdopen(fd, 'wb+')
         try:
             for chunk in util.filechunkiter(cg):
                 fp.write(chunk)
             length = fp.tell()
             try:
                 rfp = self.do_cmd(
                     'unbundle', data=fp,
                     headers={'content-length': length,
                              'content-type': 'application/octet-stream'},
                     heads=' '.join(map(hex, heads)))
                 try:
                     ret = int(rfp.readline())
                     self.ui.write(rfp.read())
                     return ret
                 finally:
                     rfp.close()
             except socket.error, err:
                 if err[0] in (errno.ECONNRESET, errno.EPIPE):
-                    raise util.Abort(_('push failed: %s'), err[1])
+                    raise util.Abort(_('push failed: %s') % err[1])
                 raise util.Abort(err[1])
         finally:
             fp.close()
             os.unlink(tempname)
 
     def stream_out(self):
         return self.do_cmd('stream_out')
 
 class httpsrepository(httprepository):
     def __init__(self, ui, path):
         if not has_https:
             raise util.Abort(_('Python support for SSL and HTTPS '
                                'is not installed'))
         httprepository.__init__(self, ui, path)
 
 def instance(ui, path, create):
     if create:
         raise util.Abort(_('cannot create new http repository'))
     if path.startswith('hg:'):
         ui.warn(_("hg:// syntax is deprecated, please use http:// instead\n"))
         path = 'http:' + path[3:]
     if path.startswith('https:'):
         return httpsrepository(ui, path)
     return httprepository(ui, path)

mercurial/localrepo.py

@@ -1,1751 +1,1751 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 gettext as _
 from demandload import *
 import repo
 demandload(globals(), "appendfile changegroup")
 demandload(globals(), "changelog dirstate filelog manifest context")
 demandload(globals(), "re lock transaction tempfile stat mdiff errno ui")
 demandload(globals(), "os revlog time util")
 
 class localrepository(repo.repository):
     capabilities = ()
 
     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(_("no repo found"))
             path = p
         self.path = os.path.join(path, ".hg")
 
         if not os.path.isdir(self.path):
             if create:
                 if not os.path.exists(path):
                     os.mkdir(path)
                 os.mkdir(self.path)
                 os.mkdir(self.join("data"))
             else:
                 raise repo.RepoError(_("repository %s not found") % path)
         elif create:
             raise repo.RepoError(_("repository %s already exists") % path)
 
         self.root = os.path.abspath(path)
         self.origroot = path
         self.ui = ui.ui(parentui=parentui)
         self.opener = util.opener(self.path)
         self.wopener = util.opener(self.root)
 
         try:
             self.ui.readconfig(self.join("hgrc"), self.root)
         except IOError:
             pass
 
         v = self.ui.revlogopts
         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.opener, v)
         self.changelog = changelog.changelog(self.opener, v)
 
         # 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.nodetagscache = None
         self.encodepats = None
         self.decodepats = None
         self.transhandle = None
 
         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))
             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] % exc.args[1:]))
+                                 (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 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):
         '''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 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:
             self.opener('localtags', 'a').write('%s %s\n' % (hex(node), name))
             self.hook('tag', node=hex(node), tag=name, local=local)
             return
 
         for x in self.status()[:5]:
             if '.hgtags' in x:
                 raise util.Abort(_('working copy of .hgtags is changed '
                                    '(please commit .hgtags manually)'))
 
         self.wfile('.hgtags', 'ab').write('%s %s\n' % (hex(node), name))
         if self.dirstate.state('.hgtags') == '?':
             self.add(['.hgtags'])
 
         self.commit(['.hgtags'], message, user, date)
         self.hook('tag', node=hex(node), tag=name, local=local)
 
     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 = key.strip()
                 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
             heads = self.heads()
             heads.reverse()
             fl = self.file(".hgtags")
             for node in heads:
                 change = self.changelog.read(node)
                 rev = self.changelog.rev(node)
                 fn, ff = self.manifest.find(change[0], '.hgtags')
                 if fn is None: continue
                 count = 0
                 for l in fl.read(fn).splitlines():
                     count += 1
                     parsetag(l, _(".hgtags (rev %d:%s), line %d") %
                              (rev, short(node), count))
             try:
                 f = self.opener("localtags")
                 count = 0
                 for l in f:
                     count += 1
                     parsetag(l, _("localtags, line %d") % count)
             except IOError:
                 pass
 
             self.tagscache['tip'] = self.changelog.tip()
 
         return self.tagscache
 
     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 lookup(self, key):
         try:
             return self.tags()[key]
         except KeyError:
             if key == '.':
                 key = self.dirstate.parents()[0]
                 if key == nullid:
                     raise repo.RepoError(_("no revision checked out"))
             try:
                 return self.changelog.lookup(key)
             except:
                 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 wjoin(self, f):
         return os.path.join(self.root, f)
 
     def file(self, f):
         if f[0] == '/':
             f = f[1:]
         return filelog.filelog(self.opener, f, self.revlogversion)
 
     def changectx(self, changeid):
         return context.changectx(self, changeid)
 
     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 wread(self, filename):
         if self.encodepats == None:
             l = []
             for pat, cmd in self.ui.configitems("encode"):
                 mf = util.matcher(self.root, "", [pat], [], [])[1]
                 l.append((mf, cmd))
             self.encodepats = l
 
         data = self.wopener(filename, 'r').read()
 
         for mf, cmd in self.encodepats:
             if mf(filename):
                 self.ui.debug(_("filtering %s through %s\n") % (filename, cmd))
                 data = util.filter(data, cmd)
                 break
 
         return data
 
     def wwrite(self, filename, data, fd=None):
         if self.decodepats == None:
             l = []
             for pat, cmd in self.ui.configitems("decode"):
                 mf = util.matcher(self.root, "", [pat], [], [])[1]
                 l.append((mf, cmd))
             self.decodepats = l
 
         for mf, cmd in self.decodepats:
             if mf(filename):
                 self.ui.debug(_("filtering %s through %s\n") % (filename, cmd))
                 data = util.filter(data, cmd)
                 break
 
         if fd:
             return fd.write(data)
         return self.wopener(filename, 'w').write(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)
 
         tr = transaction.transaction(self.ui.warn, self.opener,
                                        self.join("journal"),
                                        aftertrans(self.path))
         self.transhandle = tr
         return tr
 
     def recover(self):
         l = self.lock()
         if os.path.exists(self.join("journal")):
             self.ui.status(_("rolling back interrupted transaction\n"))
             transaction.rollback(self.opener, self.join("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.join("undo")):
             self.ui.status(_("rolling back last transaction\n"))
             transaction.rollback(self.opener, self.join("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(self.join(lockname), 0, releasefn, desc=desc)
         except lock.LockHeld, inst:
             if not wait:
                 raise
             self.ui.warn(_("waiting for lock on %s held by %s\n") %
                          (desc, inst.args[0]))
             # default to 600 seconds timeout
             l = lock.lock(self.join(lockname),
                           int(self.ui.config("ui", "timeout") or 600),
                           releasefn, desc=desc)
         if acquirefn:
             acquirefn()
         return l
 
     def lock(self, wait=1):
         return self.do_lock("lock", wait, acquirefn=self.reload,
                             desc=_('repository %s') % self.origroot)
 
     def wlock(self, wait=1):
         return self.do_lock("wlock", wait, self.dirstate.write,
                             self.wreload,
                             desc=_('working directory of %s') % self.origroot)
 
     def checkfilemerge(self, filename, text, filelog, manifest1, manifest2):
         "determine whether a new filenode is needed"
         fp1 = manifest1.get(filename, nullid)
         fp2 = manifest2.get(filename, nullid)
 
         if fp2 != nullid:
             # is one parent an ancestor of the other?
             fpa = filelog.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 text == filelog.read(fp1):
                 return (fp1, None, None)
 
         return (None, fp1, fp2)
 
     def rawcommit(self, files, text, user, date, p1=None, p2=None, wlock=None):
         orig_parent = self.dirstate.parents()[0] or nullid
         p1 = p1 or self.dirstate.parents()[0] or nullid
         p2 = p2 or self.dirstate.parents()[1] or nullid
         c1 = self.changelog.read(p1)
         c2 = self.changelog.read(p2)
         m1 = self.manifest.read(c1[0]).copy()
         m2 = self.manifest.read(c2[0])
         changed = []
 
         if orig_parent == p1:
             update_dirstate = 1
         else:
             update_dirstate = 0
 
         if not wlock:
             wlock = self.wlock()
         l = self.lock()
         tr = self.transaction()
         linkrev = self.changelog.count()
         for f in files:
             try:
                 t = self.wread(f)
                 m1.set(f, util.is_exec(self.wjoin(f), m1.execf(f)))
                 r = self.file(f)
 
                 (entry, fp1, fp2) = self.checkfilemerge(f, t, r, m1, m2)
                 if entry:
                     m1[f] = entry
                     continue
 
                 m1[f] = r.add(t, {}, tr, linkrev, fp1, fp2)
                 changed.append(f)
                 if update_dirstate:
                     self.dirstate.update([f], "n")
             except IOError:
                 try:
                     del m1[f]
                     if update_dirstate:
                         self.dirstate.forget([f])
                 except:
                     # deleted from p2?
                     pass
 
         mnode = self.manifest.add(m1, tr, linkrev, c1[0], c2[0])
         user = user or self.ui.username()
         n = self.changelog.add(mnode, changed, text, tr, p1, p2, user, date)
         tr.close()
         if update_dirstate:
             self.dirstate.setparents(n, nullid)
 
     def commit(self, files=None, text="", user=None, date=None,
                match=util.always, force=False, lock=None, wlock=None,
                force_editor=False):
         commit = []
         remove = []
         changed = []
 
         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:
             modified, added, removed, deleted, unknown = self.status(match=match)[:5]
             commit = modified + added
             remove = removed
 
         p1, p2 = self.dirstate.parents()
         c1 = self.changelog.read(p1)
         c2 = self.changelog.read(p2)
         m1 = self.manifest.read(c1[0]).copy()
         m2 = self.manifest.read(c2[0])
 
         if not commit and not remove and not force and p2 == nullid:
             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()
         for f in commit:
             self.ui.note(f + "\n")
             try:
                 m1.set(f, util.is_exec(self.wjoin(f), m1.execf(f)))
                 t = self.wread(f)
             except IOError:
                 self.ui.warn(_("trouble committing %s!\n") % f)
                 raise
 
             r = self.file(f)
 
             meta = {}
             cp = self.dirstate.copied(f)
             if cp:
                 meta["copy"] = cp
                 meta["copyrev"] = hex(m1.get(cp, m2.get(cp, nullid)))
                 self.ui.debug(_(" %s: copy %s:%s\n") % (f, cp, meta["copyrev"]))
                 fp1, fp2 = nullid, nullid
             else:
                 entry, fp1, fp2 = self.checkfilemerge(f, t, r, m1, m2)
                 if entry:
                     new[f] = entry
                     continue
 
             new[f] = r.add(t, meta, tr, linkrev, fp1, fp2)
             # remember what we've added so that we can later calculate
             # the files to pull from a set of changesets
             changed.append(f)
 
         # update manifest
         m1.update(new)
         for f in remove:
             if f in m1:
                 del m1[f]
         mn = self.manifest.add(m1, tr, linkrev, c1[0], c2[0],
                                (new, remove))
 
         # 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("")
             if p2 != nullid:
                 edittext.append("HG: branch merge")
             edittext.extend(["HG: changed %s" % f for f in changed])
             edittext.extend(["HG: removed %s" % f for f in remove])
             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)
         n = self.changelog.add(mn, changed + remove, text, tr, p1, p2, user, date)
         self.hook('pretxncommit', throw=True, node=hex(n), parent1=xp1,
                   parent2=xp2)
         tr.close()
 
         self.dirstate.setparents(n)
         self.dirstate.update(new, "n")
         self.dirstate.forget(remove)
 
         self.hook("commit", node=hex(n), parent1=xp1, parent2=xp2)
         return n
 
     def walk(self, node=None, files=[], match=util.always, badmatch=None):
         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, mf):
             t1 = self.wread(fn)
             return self.file(fn).cmp(mf.get(fn, nullid), t1)
 
         def mfmatches(node):
             change = self.changelog.read(node)
             mf = dict(self.manifest.read(change[0]))
             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
                     mf2 = mfmatches(self.dirstate.parents()[0])
                     for f in lookup:
                         if fcmp(f, mf2):
                             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
                 mf2 = mfmatches(self.dirstate.parents()[0])
                 for f in lookup + modified + added:
                     mf2[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()
             for fn in mf2keys:
                 if mf1.has_key(fn):
                     if mf1[fn] != mf2[fn] and (mf2[fn] != "" or fcmp(fn, mf1)):
                         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)
             if not os.path.exists(p):
                 self.ui.warn(_("%s does not exist!\n") % f)
             elif not os.path.isfile(p):
                 self.ui.warn(_("%s not added: only files 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)
                 util.set_exec(self.wjoin(f), m.execf(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]
 
     # branchlookup returns a dict giving a list of branches for
     # each head.  A branch is defined as the tag of a node or
     # the branch of the node's parents.  If a node has multiple
     # branch tags, tags are eliminated if they are visible from other
     # branch tags.
     #
     # So, for this graph:  a->b->c->d->e
     #                       \         /
     #                        aa -----/
     # a has tag 2.6.12
     # d has tag 2.6.13
     # e would have branch tags for 2.6.12 and 2.6.13.  Because the node
     # for 2.6.12 can be reached from the node 2.6.13, that is eliminated
     # from the list.
     #
     # It is possible that more than one head will have the same branch tag.
     # callers need to check the result for multiple heads under the same
     # branch tag if that is a problem for them (ie checkout of a specific
     # branch).
     #
     # passing in a specific branch will limit the depth of the search
     # through the parents.  It won't limit the branches returned in the
     # result though.
     def branchlookup(self, heads=None, branch=None):
         if not heads:
             heads = self.heads()
         headt = [ h for h in heads ]
         chlog = self.changelog
         branches = {}
         merges = []
         seenmerge = {}
 
         # traverse the tree once for each head, recording in the branches
         # dict which tags are visible from this head.  The branches
         # dict also records which tags are visible from each tag
         # while we traverse.
         while headt or merges:
             if merges:
                 n, found = merges.pop()
                 visit = [n]
             else:
                 h = headt.pop()
                 visit = [h]
                 found = [h]
                 seen = {}
             while visit:
                 n = visit.pop()
                 if n in seen:
                     continue
                 pp = chlog.parents(n)
                 tags = self.nodetags(n)
                 if tags:
                     for x in tags:
                         if x == 'tip':
                             continue
                         for f in found:
                             branches.setdefault(f, {})[n] = 1
                         branches.setdefault(n, {})[n] = 1
                         break
                     if n not in found:
                         found.append(n)
                     if branch in tags:
                         continue
                 seen[n] = 1
                 if pp[1] != nullid and n not in seenmerge:
                     merges.append((pp[1], [x for x in found]))
                     seenmerge[n] = 1
                 if pp[0] != nullid:
                     visit.append(pp[0])
         # traverse the branches dict, eliminating branch tags from each
         # head that are visible from another branch tag for that head.
         out = {}
         viscache = {}
         for h in heads:
             def visible(node):
                 if node in viscache:
                     return viscache[node]
                 ret = {}
                 visit = [node]
                 while visit:
                     x = visit.pop()
                     if x in viscache:
                         ret.update(viscache[x])
                     elif x not in ret:
                         ret[x] = 1
                         if x in branches:
                             visit[len(visit):] = branches[x].keys()
                 viscache[node] = ret
                 return ret
             if h not in branches:
                 continue
             # O(n^2), but somewhat limited.  This only searches the
             # tags visible from a specific head, not all the tags in the
             # whole repo.
             for b in branches[h]:
                 vis = False
                 for bb in branches[h].keys():
                     if b != bb:
                         if b in visible(bb):
                             vis = True
                             break
                 if not vis:
                     l = out.setdefault(h, [])
                     l[len(l):] = self.nodetags(b)
         return out
 
     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 range(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:
                 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)
         if not force and inc:
             self.ui.warn(_("abort: unsynced remote changes!\n"))
             self.ui.status(_("(did you forget to sync?"
                              " use push -f to force)\n"))
             return None, 1
 
         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:
             # FIXME we don't properly detect creation of new heads
             # in the push -r case, assume the user knows what he's doing
             if not revs and len(remote_heads) < len(heads) \
                    and remote_heads != [nullid]:
                 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
 
         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 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)
         # 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])
 
         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.
         returns number of heads modified or added + 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.opener, 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.opener, 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 range(cor + 1, cnr + 1):
                 self.hook("incoming", node=hex(self.changelog.node(i)),
                           source=srctype, url=url)
 
         return newheads - oldheads + 1
 
 
     def stream_in(self, remote):
         fp = remote.stream_out()
         resp = int(fp.readline())
         if resp != 0:
             raise util.Abort(_('operation forbidden by server'))
         self.ui.status(_('streaming all changes\n'))
         total_files, total_bytes = map(int, fp.readline().split(' ', 1))
         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):
             name, size = fp.readline().split('\0', 1)
             size = int(size)
             self.ui.debug('adding %s (%s)\n' % (name, util.bytecount(size)))
             ofp = self.opener(name, 'w')
             for chunk in util.filechunkiter(fp, limit=size):
                 ofp.write(chunk)
             ofp.close()
         elapsed = time.time() - start
         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(base):
     p = base
     def a():
         util.rename(os.path.join(p, "journal"), os.path.join(p, "undo"))
         util.rename(os.path.join(p, "journal.dirstate"),
                     os.path.join(p, "undo.dirstate"))
     return a
 
 def instance(ui, path, create):
     return localrepository(ui, util.drop_scheme('file', path), create)
     
 def islocal(path):
     return True