merge with stable

.hgsigs

@@ -1,99 +1,100
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 ced632394371a36953ce4d394f86278ae51a2aae 3.2
 643c58303fb0ec020907af28b9e486be299ba043 3.2.1
[phone]e5ca3661d63be9978eb4aec3f68a 3.2.2

hgext/largefiles/overrides.py

@@ -1,1287 +1,1303
 # Copyright 2009-2010 Gregory P. Ward
 # Copyright 2009-2010 Intelerad Medical Systems Incorporated
 # Copyright 2010-2011 Fog Creek Software
 # Copyright 2010-2011 Unity Technologies
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 '''Overridden Mercurial commands and functions for the largefiles extension'''
 
 import os
 import copy
 
 from mercurial import hg, util, cmdutil, scmutil, match as match_, \
         archival, pathutil, revset
 from mercurial.i18n import _
 from mercurial.node import hex
 
 import lfutil
 import lfcommands
 import basestore
 
 # -- Utility functions: commonly/repeatedly needed functionality ---------------
 
 def installnormalfilesmatchfn(manifest):
     '''installmatchfn with a matchfn that ignores all largefiles'''
     def overridematch(ctx, pats=[], opts={}, globbed=False,
             default='relpath'):
         match = oldmatch(ctx, pats, opts, globbed, default)
         m = copy.copy(match)
         notlfile = lambda f: not (lfutil.isstandin(f) or lfutil.standin(f) in
                 manifest)
         m._files = filter(notlfile, m._files)
         m._fmap = set(m._files)
         m._always = False
         origmatchfn = m.matchfn
         m.matchfn = lambda f: notlfile(f) and origmatchfn(f)
         return m
     oldmatch = installmatchfn(overridematch)
 
 def installmatchfn(f):
     '''monkey patch the scmutil module with a custom match function.
     Warning: it is monkey patching the _module_ on runtime! Not thread safe!'''
     oldmatch = scmutil.match
     setattr(f, 'oldmatch', oldmatch)
     scmutil.match = f
     return oldmatch
 
 def restorematchfn():
     '''restores scmutil.match to what it was before installmatchfn
     was called.  no-op if scmutil.match is its original function.
 
     Note that n calls to installmatchfn will require n calls to
     restore matchfn to reverse'''
     scmutil.match = getattr(scmutil.match, 'oldmatch')
 
 def installmatchandpatsfn(f):
     oldmatchandpats = scmutil.matchandpats
     setattr(f, 'oldmatchandpats', oldmatchandpats)
     scmutil.matchandpats = f
     return oldmatchandpats
 
 def restorematchandpatsfn():
     '''restores scmutil.matchandpats to what it was before
     installmatchandpatsfn was called. No-op if scmutil.matchandpats
     is its original function.
 
     Note that n calls to installmatchandpatsfn will require n calls
     to restore matchfn to reverse'''
     scmutil.matchandpats = getattr(scmutil.matchandpats, 'oldmatchandpats',
             scmutil.matchandpats)
 
 def addlargefiles(ui, repo, *pats, **opts):
     large = opts.pop('large', None)
     lfsize = lfutil.getminsize(
         ui, lfutil.islfilesrepo(repo), opts.pop('lfsize', None))
 
     lfmatcher = None
     if lfutil.islfilesrepo(repo):
         lfpats = ui.configlist(lfutil.longname, 'patterns', default=[])
         if lfpats:
             lfmatcher = match_.match(repo.root, '', list(lfpats))
 
     lfnames = []
     m = scmutil.match(repo[None], pats, opts)
     m.bad = lambda x, y: None
     wctx = repo[None]
     for f in repo.walk(m):
         exact = m.exact(f)
         lfile = lfutil.standin(f) in wctx
         nfile = f in wctx
         exists = lfile or nfile
 
         # Don't warn the user when they attempt to add a normal tracked file.
         # The normal add code will do that for us.
         if exact and exists:
             if lfile:
                 ui.warn(_('%s already a largefile\n') % f)
             continue
 
         if (exact or not exists) and not lfutil.isstandin(f):
             wfile = repo.wjoin(f)
 
             # In case the file was removed previously, but not committed
             # (issue3507)
             if not os.path.exists(wfile):
                 continue
 
             abovemin = (lfsize and
                         os.lstat(wfile).st_size >= lfsize * 1024 * 1024)
             if large or abovemin or (lfmatcher and lfmatcher(f)):
                 lfnames.append(f)
                 if ui.verbose or not exact:
                     ui.status(_('adding %s as a largefile\n') % m.rel(f))
 
     bad = []
 
     # Need to lock, otherwise there could be a race condition between
     # when standins are created and added to the repo.
     wlock = repo.wlock()
     try:
         if not opts.get('dry_run'):
             standins = []
             lfdirstate = lfutil.openlfdirstate(ui, repo)
             for f in lfnames:
                 standinname = lfutil.standin(f)
                 lfutil.writestandin(repo, standinname, hash='',
                     executable=lfutil.getexecutable(repo.wjoin(f)))
                 standins.append(standinname)
                 if lfdirstate[f] == 'r':
                     lfdirstate.normallookup(f)
                 else:
                     lfdirstate.add(f)
             lfdirstate.write()
             bad += [lfutil.splitstandin(f)
                     for f in repo[None].add(standins)
                     if f in m.files()]
     finally:
         wlock.release()
     return bad
 
 def removelargefiles(ui, repo, isaddremove, *pats, **opts):
     after = opts.get('after')
     if not pats and not after:
         raise util.Abort(_('no files specified'))
     m = scmutil.match(repo[None], pats, opts)
     try:
         repo.lfstatus = True
         s = repo.status(match=m, clean=True)
     finally:
         repo.lfstatus = False
     manifest = repo[None].manifest()
     modified, added, deleted, clean = [[f for f in list
                                         if lfutil.standin(f) in manifest]
                                        for list in (s.modified, s.added,
                                                     s.deleted, s.clean)]
 
     def warn(files, msg):
         for f in files:
             ui.warn(msg % m.rel(f))
         return int(len(files) > 0)
 
     result = 0
 
     if after:
         remove = deleted
         result = warn(modified + added + clean,
                       _('not removing %s: file still exists\n'))
     else:
         remove = deleted + clean
         result = warn(modified, _('not removing %s: file is modified (use -f'
                                   ' to force removal)\n'))
         result = warn(added, _('not removing %s: file has been marked for add'
                                ' (use forget to undo)\n')) or result
 
     for f in sorted(remove):
         if ui.verbose or not m.exact(f):
             ui.status(_('removing %s\n') % m.rel(f))
 
     # Need to lock because standin files are deleted then removed from the
     # repository and we could race in-between.
     wlock = repo.wlock()
     try:
         lfdirstate = lfutil.openlfdirstate(ui, repo)
         for f in remove:
             if not after:
                 # If this is being called by addremove, notify the user that we
                 # are removing the file.
                 if isaddremove:
                     ui.status(_('removing %s\n') % f)
                 util.unlinkpath(repo.wjoin(f), ignoremissing=True)
             lfdirstate.remove(f)
         lfdirstate.write()
         remove = [lfutil.standin(f) for f in remove]
         # If this is being called by addremove, let the original addremove
         # function handle this.
         if not isaddremove:
             for f in remove:
                 util.unlinkpath(repo.wjoin(f), ignoremissing=True)
         repo[None].forget(remove)
     finally:
         wlock.release()
 
     return result
 
 # For overriding mercurial.hgweb.webcommands so that largefiles will
 # appear at their right place in the manifests.
 def decodepath(orig, path):
     return lfutil.splitstandin(path) or path
 
 # -- Wrappers: modify existing commands --------------------------------
 
 # Add works by going through the files that the user wanted to add and
 # checking if they should be added as largefiles. Then it makes a new
 # matcher which matches only the normal files and runs the original
 # version of add.
 def overrideadd(orig, ui, repo, *pats, **opts):
     normal = opts.pop('normal')
     if normal:
         if opts.get('large'):
             raise util.Abort(_('--normal cannot be used with --large'))
         return orig(ui, repo, *pats, **opts)
     bad = addlargefiles(ui, repo, *pats, **opts)
     installnormalfilesmatchfn(repo[None].manifest())
     result = orig(ui, repo, *pats, **opts)
     restorematchfn()
 
     return (result == 1 or bad) and 1 or 0
 
 def overrideremove(orig, ui, repo, *pats, **opts):
     installnormalfilesmatchfn(repo[None].manifest())
     result = orig(ui, repo, *pats, **opts)
     restorematchfn()
     return removelargefiles(ui, repo, False, *pats, **opts) or result
 
 def overridestatusfn(orig, repo, rev2, **opts):
     try:
         repo._repo.lfstatus = True
         return orig(repo, rev2, **opts)
     finally:
         repo._repo.lfstatus = False
 
 def overridestatus(orig, ui, repo, *pats, **opts):
     try:
         repo.lfstatus = True
         return orig(ui, repo, *pats, **opts)
     finally:
         repo.lfstatus = False
 
 def overridedirty(orig, repo, ignoreupdate=False):
     try:
         repo._repo.lfstatus = True
         return orig(repo, ignoreupdate)
     finally:
         repo._repo.lfstatus = False
 
 def overridelog(orig, ui, repo, *pats, **opts):
     def overridematchandpats(ctx, pats=[], opts={}, globbed=False,
             default='relpath'):
         """Matcher that merges root directory with .hglf, suitable for log.
         It is still possible to match .hglf directly.
         For any listed files run log on the standin too.
         matchfn tries both the given filename and with .hglf stripped.
         """
         matchandpats = oldmatchandpats(ctx, pats, opts, globbed, default)
         m, p = copy.copy(matchandpats)
 
         if m.always():
             # We want to match everything anyway, so there's no benefit trying
             # to add standins.
             return matchandpats
 
         pats = set(p)
         # TODO: handling of patterns in both cases below
         if m._cwd:
             if os.path.isabs(m._cwd):
                 # TODO: handle largefile magic when invoked from other cwd
                 return matchandpats
             back = (m._cwd.count('/') + 1) * '../'
             pats.update(back + lfutil.standin(m._cwd + '/' + f) for f in p)
         else:
             pats.update(lfutil.standin(f) for f in p)
 
         for i in range(0, len(m._files)):
             standin = lfutil.standin(m._files[i])
             if standin in repo[ctx.node()]:
                 m._files[i] = standin
             elif m._files[i] not in repo[ctx.node()]:
                 m._files.append(standin)
             pats.add(standin)
 
         m._fmap = set(m._files)
         m._always = False
         origmatchfn = m.matchfn
         def lfmatchfn(f):
             lf = lfutil.splitstandin(f)
             if lf is not None and origmatchfn(lf):
                 return True
             r = origmatchfn(f)
             return r
         m.matchfn = lfmatchfn
 
         return m, pats
 
     # For hg log --patch, the match object is used in two different senses:
     # (1) to determine what revisions should be printed out, and
     # (2) to determine what files to print out diffs for.
     # The magic matchandpats override should be used for case (1) but not for
     # case (2).
     def overridemakelogfilematcher(repo, pats, opts):
         pctx = repo[None]
         match, pats = oldmatchandpats(pctx, pats, opts)
         return lambda rev: match
 
     oldmatchandpats = installmatchandpatsfn(overridematchandpats)
     oldmakelogfilematcher = cmdutil._makenofollowlogfilematcher
     setattr(cmdutil, '_makenofollowlogfilematcher', overridemakelogfilematcher)
 
     try:
         return orig(ui, repo, *pats, **opts)
     finally:
         restorematchandpatsfn()
         setattr(cmdutil, '_makenofollowlogfilematcher', oldmakelogfilematcher)
 
 def overrideverify(orig, ui, repo, *pats, **opts):
     large = opts.pop('large', False)
     all = opts.pop('lfa', False)
     contents = opts.pop('lfc', False)
 
     result = orig(ui, repo, *pats, **opts)
     if large or all or contents:
         result = result or lfcommands.verifylfiles(ui, repo, all, contents)
     return result
 
 def overridedebugstate(orig, ui, repo, *pats, **opts):
     large = opts.pop('large', False)
     if large:
         class fakerepo(object):
             dirstate = lfutil.openlfdirstate(ui, repo)
         orig(ui, fakerepo, *pats, **opts)
     else:
         orig(ui, repo, *pats, **opts)
 
 # Override needs to refresh standins so that update's normal merge
 # will go through properly. Then the other update hook (overriding repo.update)
 # will get the new files. Filemerge is also overridden so that the merge
 # will merge standins correctly.
 def overrideupdate(orig, ui, repo, *pats, **opts):
     # Need to lock between the standins getting updated and their
     # largefiles getting updated
     wlock = repo.wlock()
     try:
         if opts['check']:
             lfdirstate = lfutil.openlfdirstate(ui, repo)
             unsure, s = lfdirstate.status(
                 match_.always(repo.root, repo.getcwd()),
                 [], False, False, False)
 
             mod = len(s.modified) > 0
             for lfile in unsure:
                 standin = lfutil.standin(lfile)
                 if repo['.'][standin].data().strip() != \
                         lfutil.hashfile(repo.wjoin(lfile)):
                     mod = True
                 else:
                     lfdirstate.normal(lfile)
             lfdirstate.write()
             if mod:
                 raise util.Abort(_('uncommitted changes'))
         return orig(ui, repo, *pats, **opts)
     finally:
         wlock.release()
 
 # Before starting the manifest merge, merge.updates will call
 # checkunknown to check if there are any files in the merged-in
 # changeset that collide with unknown files in the working copy.
 #
 # The largefiles are seen as unknown, so this prevents us from merging
 # in a file 'foo' if we already have a largefile with the same name.
 #
 # The overridden function filters the unknown files by removing any
 # largefiles. This makes the merge proceed and we can then handle this
 # case further in the overridden calculateupdates function below.
 def overridecheckunknownfile(origfn, repo, wctx, mctx, f):
     if lfutil.standin(repo.dirstate.normalize(f)) in wctx:
         return False
     return origfn(repo, wctx, mctx, f)
 
 # The manifest merge handles conflicts on the manifest level. We want
 # to handle changes in largefile-ness of files at this level too.
 #
 # The strategy is to run the original calculateupdates and then process
 # the action list it outputs. There are two cases we need to deal with:
 #
 # 1. Normal file in p1, largefile in p2. Here the largefile is
 #    detected via its standin file, which will enter the working copy
 #    with a "get" action. It is not "merge" since the standin is all
 #    Mercurial is concerned with at this level -- the link to the
 #    existing normal file is not relevant here.
 #
 # 2. Largefile in p1, normal file in p2. Here we get a "merge" action
 #    since the largefile will be present in the working copy and
 #    different from the normal file in p2. Mercurial therefore
 #    triggers a merge action.
 #
 # In both cases, we prompt the user and emit new actions to either
 # remove the standin (if the normal file was kept) or to remove the
 # normal file and get the standin (if the largefile was kept). The
 # default prompt answer is to use the largefile version since it was
 # presumably changed on purpose.
 #
 # Finally, the merge.applyupdates function will then take care of
 # writing the files into the working copy and lfcommands.updatelfiles
 # will update the largefiles.
 def overridecalculateupdates(origfn, repo, p1, p2, pas, branchmerge, force,
                              partial, acceptremote, followcopies):
     overwrite = force and not branchmerge
     actions = origfn(repo, p1, p2, pas, branchmerge, force, partial,
                      acceptremote, followcopies)
 
     if overwrite:
         return actions
 
     removes = set(a[0] for a in actions['r'])
 
     newglist = []
     lfmr = [] # LargeFiles: Mark as Removed
     for action in actions['g']:
         f, args, msg = action
         splitstandin = f and lfutil.splitstandin(f)
         if (splitstandin is not None and
             splitstandin in p1 and splitstandin not in removes):
             # Case 1: normal file in the working copy, largefile in
             # the second parent
             lfile = splitstandin
             standin = f
             msg = _('remote turned local normal file %s into a largefile\n'
                     'use (l)argefile or keep (n)ormal file?'
                     '$$ &Largefile $$ &Normal file') % lfile
-            if repo.ui.promptchoice(msg, 0) == 0:
+            if (# local has unchanged normal file, pick remote largefile
+                pas and lfile in pas[0] and
+                not pas[0][lfile].cmp(p1[lfile]) or
+                # if remote has unchanged largefile, pick local normal file
+                not (pas and standin in pas[0] and
+                     not pas[0][standin].cmp(p2[standin])) and
+                # else, prompt
+                repo.ui.promptchoice(msg, 0) == 0
+                ): # pick remote largefile
                 actions['r'].append((lfile, None, msg))
                 newglist.append((standin, (p2.flags(standin),), msg))
-            else:
+            else: # keep local normal file
                 actions['r'].append((standin, None, msg))
         elif lfutil.standin(f) in p1 and lfutil.standin(f) not in removes:
             # Case 2: largefile in the working copy, normal file in
             # the second parent
             standin = lfutil.standin(f)
             lfile = f
             msg = _('remote turned local largefile %s into a normal file\n'
                     'keep (l)argefile or use (n)ormal file?'
                     '$$ &Largefile $$ &Normal file') % lfile
-            if repo.ui.promptchoice(msg, 0) == 0:
+            if (# if remote has unchanged normal file, pick local largefile
+                pas and f in pas[0] and
+                not pas[0][f].cmp(p2[f]) or
+                # if local has unchanged largefile, pick remote normal file
+                not (pas and standin in pas[0] and
+                     not pas[0][standin].cmp(p1[standin])) and
+                # else, prompt
+                repo.ui.promptchoice(msg, 0) == 0
+                ): # keep local largefile
                 if branchmerge:
                     # largefile can be restored from standin safely
                     actions['r'].append((lfile, None, msg))
                 else:
                     # "lfile" should be marked as "removed" without
                     # removal of itself
                     lfmr.append((lfile, None, msg))
 
                     # linear-merge should treat this largefile as 're-added'
                     actions['a'].append((standin, None, msg))
-            else:
+            else: # pick remote normal file
                 actions['r'].append((standin, None, msg))
                 newglist.append((lfile, (p2.flags(lfile),), msg))
         else:
             newglist.append(action)
 
     newglist.sort()
     actions['g'] = newglist
     if lfmr:
         lfmr.sort()
         actions['lfmr'] = lfmr
 
     return actions
 
 def mergerecordupdates(orig, repo, actions, branchmerge):
     if 'lfmr' in actions:
         # this should be executed before 'orig', to execute 'remove'
         # before all other actions
         for lfile, args, msg in actions['lfmr']:
             repo.dirstate.remove(lfile)
 
     return orig(repo, actions, branchmerge)
 
 
 # Override filemerge to prompt the user about how they wish to merge
 # largefiles. This will handle identical edits without prompting the user.
 def overridefilemerge(origfn, repo, mynode, orig, fcd, fco, fca, labels=None):
     if not lfutil.isstandin(orig):
         return origfn(repo, mynode, orig, fcd, fco, fca, labels=labels)
 
     ahash = fca.data().strip().lower()
     dhash = fcd.data().strip().lower()
     ohash = fco.data().strip().lower()
     if (ohash != ahash and
         ohash != dhash and
         (dhash == ahash or
          repo.ui.promptchoice(
              _('largefile %s has a merge conflict\nancestor was %s\n'
                'keep (l)ocal %s or\ntake (o)ther %s?'
                '$$ &Local $$ &Other') %
                (lfutil.splitstandin(orig), ahash, dhash, ohash),
              0) == 1)):
         repo.wwrite(fcd.path(), fco.data(), fco.flags())
     return 0
 
 # Copy first changes the matchers to match standins instead of
 # largefiles.  Then it overrides util.copyfile in that function it
 # checks if the destination largefile already exists. It also keeps a
 # list of copied files so that the largefiles can be copied and the
 # dirstate updated.
 def overridecopy(orig, ui, repo, pats, opts, rename=False):
     # doesn't remove largefile on rename
     if len(pats) < 2:
         # this isn't legal, let the original function deal with it
         return orig(ui, repo, pats, opts, rename)
 
     def makestandin(relpath):
         path = pathutil.canonpath(repo.root, repo.getcwd(), relpath)
         return os.path.join(repo.wjoin(lfutil.standin(path)))
 
     fullpats = scmutil.expandpats(pats)
     dest = fullpats[-1]
 
     if os.path.isdir(dest):
         if not os.path.isdir(makestandin(dest)):
             os.makedirs(makestandin(dest))
     # This could copy both lfiles and normal files in one command,
     # but we don't want to do that. First replace their matcher to
     # only match normal files and run it, then replace it to just
     # match largefiles and run it again.
     nonormalfiles = False
     nolfiles = False
     installnormalfilesmatchfn(repo[None].manifest())
     try:
         try:
             result = orig(ui, repo, pats, opts, rename)
         except util.Abort, e:
             if str(e) != _('no files to copy'):
                 raise e
             else:
                 nonormalfiles = True
             result = 0
     finally:
         restorematchfn()
 
     # The first rename can cause our current working directory to be removed.
     # In that case there is nothing left to copy/rename so just quit.
     try:
         repo.getcwd()
     except OSError:
         return result
 
     try:
         try:
             # When we call orig below it creates the standins but we don't add
             # them to the dir state until later so lock during that time.
             wlock = repo.wlock()
 
             manifest = repo[None].manifest()
             def overridematch(ctx, pats=[], opts={}, globbed=False,
                     default='relpath'):
                 newpats = []
                 # The patterns were previously mangled to add the standin
                 # directory; we need to remove that now
                 for pat in pats:
                     if match_.patkind(pat) is None and lfutil.shortname in pat:
                         newpats.append(pat.replace(lfutil.shortname, ''))
                     else:
                         newpats.append(pat)
                 match = oldmatch(ctx, newpats, opts, globbed, default)
                 m = copy.copy(match)
                 lfile = lambda f: lfutil.standin(f) in manifest
                 m._files = [lfutil.standin(f) for f in m._files if lfile(f)]
                 m._fmap = set(m._files)
                 origmatchfn = m.matchfn
                 m.matchfn = lambda f: (lfutil.isstandin(f) and
                                     (f in manifest) and
                                     origmatchfn(lfutil.splitstandin(f)) or
                                     None)
                 return m
             oldmatch = installmatchfn(overridematch)
             listpats = []
             for pat in pats:
                 if match_.patkind(pat) is not None:
                     listpats.append(pat)
                 else:
                     listpats.append(makestandin(pat))
 
             try:
                 origcopyfile = util.copyfile
                 copiedfiles = []
                 def overridecopyfile(src, dest):
                     if (lfutil.shortname in src and
                         dest.startswith(repo.wjoin(lfutil.shortname))):
                         destlfile = dest.replace(lfutil.shortname, '')
                         if not opts['force'] and os.path.exists(destlfile):
                             raise IOError('',
                                 _('destination largefile already exists'))
                     copiedfiles.append((src, dest))
                     origcopyfile(src, dest)
 
                 util.copyfile = overridecopyfile
                 result += orig(ui, repo, listpats, opts, rename)
             finally:
                 util.copyfile = origcopyfile
 
             lfdirstate = lfutil.openlfdirstate(ui, repo)
             for (src, dest) in copiedfiles:
                 if (lfutil.shortname in src and
                     dest.startswith(repo.wjoin(lfutil.shortname))):
                     srclfile = src.replace(repo.wjoin(lfutil.standin('')), '')
                     destlfile = dest.replace(repo.wjoin(lfutil.standin('')), '')
                     destlfiledir = os.path.dirname(repo.wjoin(destlfile)) or '.'
                     if not os.path.isdir(destlfiledir):
                         os.makedirs(destlfiledir)
                     if rename:
                         os.rename(repo.wjoin(srclfile), repo.wjoin(destlfile))
 
                         # The file is gone, but this deletes any empty parent
                         # directories as a side-effect.
                         util.unlinkpath(repo.wjoin(srclfile), True)
                         lfdirstate.remove(srclfile)
                     else:
                         util.copyfile(repo.wjoin(srclfile),
                                       repo.wjoin(destlfile))
 
                     lfdirstate.add(destlfile)
             lfdirstate.write()
         except util.Abort, e:
             if str(e) != _('no files to copy'):
                 raise e
             else:
                 nolfiles = True
     finally:
         restorematchfn()
         wlock.release()
 
     if nolfiles and nonormalfiles:
         raise util.Abort(_('no files to copy'))
 
     return result
 
 # When the user calls revert, we have to be careful to not revert any
 # changes to other largefiles accidentally. This means we have to keep
 # track of the largefiles that are being reverted so we only pull down
 # the necessary largefiles.
 #
 # Standins are only updated (to match the hash of largefiles) before
 # commits. Update the standins then run the original revert, changing
 # the matcher to hit standins instead of largefiles. Based on the
 # resulting standins update the largefiles.
 def overriderevert(orig, ui, repo, *pats, **opts):
     # Because we put the standins in a bad state (by updating them)
     # and then return them to a correct state we need to lock to
     # prevent others from changing them in their incorrect state.
     wlock = repo.wlock()
     try:
         lfdirstate = lfutil.openlfdirstate(ui, repo)
         s = lfutil.lfdirstatestatus(lfdirstate, repo)
         lfdirstate.write()
         for lfile in s.modified:
             lfutil.updatestandin(repo, lfutil.standin(lfile))
         for lfile in s.deleted:
             if (os.path.exists(repo.wjoin(lfutil.standin(lfile)))):
                 os.unlink(repo.wjoin(lfutil.standin(lfile)))
 
         oldstandins = lfutil.getstandinsstate(repo)
 
         def overridematch(ctx, pats=[], opts={}, globbed=False,
                 default='relpath'):
             match = oldmatch(ctx, pats, opts, globbed, default)
             m = copy.copy(match)
             def tostandin(f):
                 if lfutil.standin(f) in ctx:
                     return lfutil.standin(f)
                 elif lfutil.standin(f) in repo[None]:
                     return None
                 return f
             m._files = [tostandin(f) for f in m._files]
             m._files = [f for f in m._files if f is not None]
             m._fmap = set(m._files)
             origmatchfn = m.matchfn
             def matchfn(f):
                 if lfutil.isstandin(f):
                     return (origmatchfn(lfutil.splitstandin(f)) and
                             (f in repo[None] or f in ctx))
                 return origmatchfn(f)
             m.matchfn = matchfn
             return m
         oldmatch = installmatchfn(overridematch)
         try:
             orig(ui, repo, *pats, **opts)
         finally:
             restorematchfn()
 
         newstandins = lfutil.getstandinsstate(repo)
         filelist = lfutil.getlfilestoupdate(oldstandins, newstandins)
         # lfdirstate should be 'normallookup'-ed for updated files,
         # because reverting doesn't touch dirstate for 'normal' files
         # when target revision is explicitly specified: in such case,
         # 'n' and valid timestamp in dirstate doesn't ensure 'clean'
         # of target (standin) file.
         lfcommands.updatelfiles(ui, repo, filelist, printmessage=False,
                                 normallookup=True)
 
     finally:
         wlock.release()
 
 # after pulling changesets, we need to take some extra care to get
 # largefiles updated remotely
 def overridepull(orig, ui, repo, source=None, **opts):
     revsprepull = len(repo)
     if not source:
         source = 'default'
     repo.lfpullsource = source
     result = orig(ui, repo, source, **opts)
     revspostpull = len(repo)
     lfrevs = opts.get('lfrev', [])
     if opts.get('all_largefiles'):
         lfrevs.append('pulled()')
     if lfrevs and revspostpull > revsprepull:
         numcached = 0
         repo.firstpulled = revsprepull # for pulled() revset expression
         try:
             for rev in scmutil.revrange(repo, lfrevs):
                 ui.note(_('pulling largefiles for revision %s\n') % rev)
                 (cached, missing) = lfcommands.cachelfiles(ui, repo, rev)
                 numcached += len(cached)
         finally:
             del repo.firstpulled
         ui.status(_("%d largefiles cached\n") % numcached)
     return result
 
 def pulledrevsetsymbol(repo, subset, x):
     """``pulled()``
     Changesets that just has been pulled.
 
     Only available with largefiles from pull --lfrev expressions.
 
     .. container:: verbose
 
       Some examples:
 
       - pull largefiles for all new changesets::
 
           hg pull -lfrev "pulled()"
 
       - pull largefiles for all new branch heads::
 
           hg pull -lfrev "head(pulled()) and not closed()"
 
     """
 
     try:
         firstpulled = repo.firstpulled
     except AttributeError:
         raise util.Abort(_("pulled() only available in --lfrev"))
     return revset.baseset([r for r in subset if r >= firstpulled])
 
 def overrideclone(orig, ui, source, dest=None, **opts):
     d = dest
     if d is None:
         d = hg.defaultdest(source)
     if opts.get('all_largefiles') and not hg.islocal(d):
             raise util.Abort(_(
             '--all-largefiles is incompatible with non-local destination %s') %
             d)
 
     return orig(ui, source, dest, **opts)
 
 def hgclone(orig, ui, opts, *args, **kwargs):
     result = orig(ui, opts, *args, **kwargs)
 
     if result is not None:
         sourcerepo, destrepo = result
         repo = destrepo.local()
 
         # Caching is implicitly limited to 'rev' option, since the dest repo was
         # truncated at that point.  The user may expect a download count with
         # this option, so attempt whether or not this is a largefile repo.
         if opts.get('all_largefiles'):
             success, missing = lfcommands.downloadlfiles(ui, repo, None)
 
             if missing != 0:
                 return None
 
     return result
 
 def overriderebase(orig, ui, repo, **opts):
     resuming = opts.get('continue')
     repo._lfcommithooks.append(lfutil.automatedcommithook(resuming))
     repo._lfstatuswriters.append(lambda *msg, **opts: None)
     try:
         return orig(ui, repo, **opts)
     finally:
         repo._lfstatuswriters.pop()
         repo._lfcommithooks.pop()
 
 def overridearchive(orig, repo, dest, node, kind, decode=True, matchfn=None,
             prefix=None, mtime=None, subrepos=None):
     # No need to lock because we are only reading history and
     # largefile caches, neither of which are modified.
     lfcommands.cachelfiles(repo.ui, repo, node)
 
     if kind not in archival.archivers:
         raise util.Abort(_("unknown archive type '%s'") % kind)
 
     ctx = repo[node]
 
     if kind == 'files':
         if prefix:
             raise util.Abort(
                 _('cannot give prefix when archiving to files'))
     else:
         prefix = archival.tidyprefix(dest, kind, prefix)
 
     def write(name, mode, islink, getdata):
         if matchfn and not matchfn(name):
             return
         data = getdata()
         if decode:
             data = repo.wwritedata(name, data)
         archiver.addfile(prefix + name, mode, islink, data)
 
     archiver = archival.archivers[kind](dest, mtime or ctx.date()[0])
 
     if repo.ui.configbool("ui", "archivemeta", True):
         def metadata():
             base = 'repo: %s\nnode: %s\nbranch: %s\n' % (
                 hex(repo.changelog.node(0)), hex(node), ctx.branch())
 
             tags = ''.join('tag: %s\n' % t for t in ctx.tags()
                            if repo.tagtype(t) == 'global')
             if not tags:
                 repo.ui.pushbuffer()
                 opts = {'template': '{latesttag}\n{latesttagdistance}',
                         'style': '', 'patch': None, 'git': None}
                 cmdutil.show_changeset(repo.ui, repo, opts).show(ctx)
                 ltags, dist = repo.ui.popbuffer().split('\n')
                 tags = ''.join('latesttag: %s\n' % t for t in ltags.split(':'))
                 tags += 'latesttagdistance: %s\n' % dist
 
             return base + tags
 
         write('.hg_archival.txt', 0644, False, metadata)
 
     for f in ctx:
         ff = ctx.flags(f)
         getdata = ctx[f].data
         if lfutil.isstandin(f):
             path = lfutil.findfile(repo, getdata().strip())
             if path is None:
                 raise util.Abort(
                     _('largefile %s not found in repo store or system cache')
                     % lfutil.splitstandin(f))
             f = lfutil.splitstandin(f)
 
             def getdatafn():
                 fd = None
                 try:
                     fd = open(path, 'rb')
                     return fd.read()
                 finally:
                     if fd:
                         fd.close()
 
             getdata = getdatafn
         write(f, 'x' in ff and 0755 or 0644, 'l' in ff, getdata)
 
     if subrepos:
         for subpath in sorted(ctx.substate):
             sub = ctx.sub(subpath)
             submatch = match_.narrowmatcher(subpath, matchfn)
             sub.archive(repo.ui, archiver, prefix, submatch)
 
     archiver.done()
 
 def hgsubrepoarchive(orig, repo, ui, archiver, prefix, match=None):
     repo._get(repo._state + ('hg',))
     rev = repo._state[1]
     ctx = repo._repo[rev]
 
     lfcommands.cachelfiles(ui, repo._repo, ctx.node())
 
     def write(name, mode, islink, getdata):
         # At this point, the standin has been replaced with the largefile name,
         # so the normal matcher works here without the lfutil variants.
         if match and not match(f):
             return
         data = getdata()
 
         archiver.addfile(prefix + repo._path + '/' + name, mode, islink, data)
 
     for f in ctx:
         ff = ctx.flags(f)
         getdata = ctx[f].data
         if lfutil.isstandin(f):
             path = lfutil.findfile(repo._repo, getdata().strip())
             if path is None:
                 raise util.Abort(
                     _('largefile %s not found in repo store or system cache')
                     % lfutil.splitstandin(f))
             f = lfutil.splitstandin(f)
 
             def getdatafn():
                 fd = None
                 try:
                     fd = open(os.path.join(prefix, path), 'rb')
                     return fd.read()
                 finally:
                     if fd:
                         fd.close()
 
             getdata = getdatafn
 
         write(f, 'x' in ff and 0755 or 0644, 'l' in ff, getdata)
 
     for subpath in sorted(ctx.substate):
         sub = ctx.sub(subpath)
         submatch = match_.narrowmatcher(subpath, match)
         sub.archive(ui, archiver, os.path.join(prefix, repo._path) + '/',
                     submatch)
 
 # If a largefile is modified, the change is not reflected in its
 # standin until a commit. cmdutil.bailifchanged() raises an exception
 # if the repo has uncommitted changes. Wrap it to also check if
 # largefiles were changed. This is used by bisect and backout.
 def overridebailifchanged(orig, repo):
     orig(repo)
     repo.lfstatus = True
     s = repo.status()
     repo.lfstatus = False
     if s.modified or s.added or s.removed or s.deleted:
         raise util.Abort(_('uncommitted changes'))
 
 # Fetch doesn't use cmdutil.bailifchanged so override it to add the check
 def overridefetch(orig, ui, repo, *pats, **opts):
     repo.lfstatus = True
     s = repo.status()
     repo.lfstatus = False
     if s.modified or s.added or s.removed or s.deleted:
         raise util.Abort(_('uncommitted changes'))
     return orig(ui, repo, *pats, **opts)
 
 def overrideforget(orig, ui, repo, *pats, **opts):
     installnormalfilesmatchfn(repo[None].manifest())
     result = orig(ui, repo, *pats, **opts)
     restorematchfn()
     m = scmutil.match(repo[None], pats, opts)
 
     try:
         repo.lfstatus = True
         s = repo.status(match=m, clean=True)
     finally:
         repo.lfstatus = False
     forget = sorted(s.modified + s.added + s.deleted + s.clean)
     forget = [f for f in forget if lfutil.standin(f) in repo[None].manifest()]
 
     for f in forget:
         if lfutil.standin(f) not in repo.dirstate and not \
                 os.path.isdir(m.rel(lfutil.standin(f))):
             ui.warn(_('not removing %s: file is already untracked\n')
                     % m.rel(f))
             result = 1
 
     for f in forget:
         if ui.verbose or not m.exact(f):
             ui.status(_('removing %s\n') % m.rel(f))
 
     # Need to lock because standin files are deleted then removed from the
     # repository and we could race in-between.
     wlock = repo.wlock()
     try:
         lfdirstate = lfutil.openlfdirstate(ui, repo)
         for f in forget:
             if lfdirstate[f] == 'a':
                 lfdirstate.drop(f)
             else:
                 lfdirstate.remove(f)
         lfdirstate.write()
         standins = [lfutil.standin(f) for f in forget]
         for f in standins:
             util.unlinkpath(repo.wjoin(f), ignoremissing=True)
         repo[None].forget(standins)
     finally:
         wlock.release()
 
     return result
 
 def _getoutgoings(repo, other, missing, addfunc):
     """get pairs of filename and largefile hash in outgoing revisions
     in 'missing'.
 
     largefiles already existing on 'other' repository are ignored.
 
     'addfunc' is invoked with each unique pairs of filename and
     largefile hash value.
     """
     knowns = set()
     lfhashes = set()
     def dedup(fn, lfhash):
         k = (fn, lfhash)
         if k not in knowns:
             knowns.add(k)
             lfhashes.add(lfhash)
     lfutil.getlfilestoupload(repo, missing, dedup)
     if lfhashes:
         lfexists = basestore._openstore(repo, other).exists(lfhashes)
         for fn, lfhash in knowns:
             if not lfexists[lfhash]: # lfhash doesn't exist on "other"
                 addfunc(fn, lfhash)
 
 def outgoinghook(ui, repo, other, opts, missing):
     if opts.pop('large', None):
         lfhashes = set()
         if ui.debugflag:
             toupload = {}
             def addfunc(fn, lfhash):
                 if fn not in toupload:
                     toupload[fn] = []
                 toupload[fn].append(lfhash)
                 lfhashes.add(lfhash)
             def showhashes(fn):
                 for lfhash in sorted(toupload[fn]):
                     ui.debug('    %s\n' % (lfhash))
         else:
             toupload = set()
             def addfunc(fn, lfhash):
                 toupload.add(fn)
                 lfhashes.add(lfhash)
             def showhashes(fn):
                 pass
         _getoutgoings(repo, other, missing, addfunc)
 
         if not toupload:
             ui.status(_('largefiles: no files to upload\n'))
         else:
             ui.status(_('largefiles to upload (%d entities):\n')
                       % (len(lfhashes)))
             for file in sorted(toupload):
                 ui.status(lfutil.splitstandin(file) + '\n')
                 showhashes(file)
             ui.status('\n')
 
 def summaryremotehook(ui, repo, opts, changes):
     largeopt = opts.get('large', False)
     if changes is None:
         if largeopt:
             return (False, True) # only outgoing check is needed
         else:
             return (False, False)
     elif largeopt:
         url, branch, peer, outgoing = changes[1]
         if peer is None:
             # i18n: column positioning for "hg summary"
             ui.status(_('largefiles: (no remote repo)\n'))
             return
 
         toupload = set()
         lfhashes = set()
         def addfunc(fn, lfhash):
             toupload.add(fn)
             lfhashes.add(lfhash)
         _getoutgoings(repo, peer, outgoing.missing, addfunc)
 
         if not toupload:
             # i18n: column positioning for "hg summary"
             ui.status(_('largefiles: (no files to upload)\n'))
         else:
             # i18n: column positioning for "hg summary"
             ui.status(_('largefiles: %d entities for %d files to upload\n')
                       % (len(lfhashes), len(toupload)))
 
 def overridesummary(orig, ui, repo, *pats, **opts):
     try:
         repo.lfstatus = True
         orig(ui, repo, *pats, **opts)
     finally:
         repo.lfstatus = False
 
 def scmutiladdremove(orig, repo, pats=[], opts={}, dry_run=None,
                      similarity=None):
     if not lfutil.islfilesrepo(repo):
         return orig(repo, pats, opts, dry_run, similarity)
     # Get the list of missing largefiles so we can remove them
     lfdirstate = lfutil.openlfdirstate(repo.ui, repo)
     unsure, s = lfdirstate.status(match_.always(repo.root, repo.getcwd()), [],
                                   False, False, False)
 
     # Call into the normal remove code, but the removing of the standin, we want
     # to have handled by original addremove.  Monkey patching here makes sure
     # we don't remove the standin in the largefiles code, preventing a very
     # confused state later.
     if s.deleted:
         m = [repo.wjoin(f) for f in s.deleted]
         removelargefiles(repo.ui, repo, True, *m, **opts)
     # Call into the normal add code, and any files that *should* be added as
     # largefiles will be
     addlargefiles(repo.ui, repo, *pats, **opts)
     # Now that we've handled largefiles, hand off to the original addremove
     # function to take care of the rest.  Make sure it doesn't do anything with
     # largefiles by installing a matcher that will ignore them.
     installnormalfilesmatchfn(repo[None].manifest())
     result = orig(repo, pats, opts, dry_run, similarity)
     restorematchfn()
     return result
 
 # Calling purge with --all will cause the largefiles to be deleted.
 # Override repo.status to prevent this from happening.
 def overridepurge(orig, ui, repo, *dirs, **opts):
     # XXX large file status is buggy when used on repo proxy.
     # XXX this needs to be investigate.
     repo = repo.unfiltered()
     oldstatus = repo.status
     def overridestatus(node1='.', node2=None, match=None, ignored=False,
                         clean=False, unknown=False, listsubrepos=False):
         r = oldstatus(node1, node2, match, ignored, clean, unknown,
                       listsubrepos)
         lfdirstate = lfutil.openlfdirstate(ui, repo)
         unknown = [f for f in r.unknown if lfdirstate[f] == '?']
         ignored = [f for f in r.ignored if lfdirstate[f] == '?']
         return scmutil.status(r.modified, r.added, r.removed, r.deleted,
                               unknown, ignored, r.clean)
     repo.status = overridestatus
     orig(ui, repo, *dirs, **opts)
     repo.status = oldstatus
 def overriderollback(orig, ui, repo, **opts):
     wlock = repo.wlock()
     try:
         before = repo.dirstate.parents()
         orphans = set(f for f in repo.dirstate
                       if lfutil.isstandin(f) and repo.dirstate[f] != 'r')
         result = orig(ui, repo, **opts)
         after = repo.dirstate.parents()
         if before == after:
             return result # no need to restore standins
 
         pctx = repo['.']
         for f in repo.dirstate:
             if lfutil.isstandin(f):
                 orphans.discard(f)
                 if repo.dirstate[f] == 'r':
                     repo.wvfs.unlinkpath(f, ignoremissing=True)
                 elif f in pctx:
                     fctx = pctx[f]
                     repo.wwrite(f, fctx.data(), fctx.flags())
                 else:
                     # content of standin is not so important in 'a',
                     # 'm' or 'n' (coming from the 2nd parent) cases
                     lfutil.writestandin(repo, f, '', False)
         for standin in orphans:
             repo.wvfs.unlinkpath(standin, ignoremissing=True)
 
         lfdirstate = lfutil.openlfdirstate(ui, repo)
         orphans = set(lfdirstate)
         lfiles = lfutil.listlfiles(repo)
         for file in lfiles:
             lfutil.synclfdirstate(repo, lfdirstate, file, True)
             orphans.discard(file)
         for lfile in orphans:
             lfdirstate.drop(lfile)
         lfdirstate.write()
     finally:
         wlock.release()
     return result
 
 def overridetransplant(orig, ui, repo, *revs, **opts):
     resuming = opts.get('continue')
     repo._lfcommithooks.append(lfutil.automatedcommithook(resuming))
     repo._lfstatuswriters.append(lambda *msg, **opts: None)
     try:
         result = orig(ui, repo, *revs, **opts)
     finally:
         repo._lfstatuswriters.pop()
         repo._lfcommithooks.pop()
     return result
 
 def overridecat(orig, ui, repo, file1, *pats, **opts):
     ctx = scmutil.revsingle(repo, opts.get('rev'))
     err = 1
     notbad = set()
     m = scmutil.match(ctx, (file1,) + pats, opts)
     origmatchfn = m.matchfn
     def lfmatchfn(f):
         if origmatchfn(f):
             return True
         lf = lfutil.splitstandin(f)
         if lf is None:
             return False
         notbad.add(lf)
         return origmatchfn(lf)
     m.matchfn = lfmatchfn
     origbadfn = m.bad
     def lfbadfn(f, msg):
         if not f in notbad:
             origbadfn(f, msg)
     m.bad = lfbadfn
     for f in ctx.walk(m):
         fp = cmdutil.makefileobj(repo, opts.get('output'), ctx.node(),
                                  pathname=f)
         lf = lfutil.splitstandin(f)
         if lf is None or origmatchfn(f):
             # duplicating unreachable code from commands.cat
             data = ctx[f].data()
             if opts.get('decode'):
                 data = repo.wwritedata(f, data)
             fp.write(data)
         else:
             hash = lfutil.readstandin(repo, lf, ctx.rev())
             if not lfutil.inusercache(repo.ui, hash):
                 store = basestore._openstore(repo)
                 success, missing = store.get([(lf, hash)])
                 if len(success) != 1:
                     raise util.Abort(
                         _('largefile %s is not in cache and could not be '
                           'downloaded')  % lf)
             path = lfutil.usercachepath(repo.ui, hash)
             fpin = open(path, "rb")
             for chunk in util.filechunkiter(fpin, 128 * 1024):
                 fp.write(chunk)
             fpin.close()
         fp.close()
         err = 0
     return err
 
 def mergeupdate(orig, repo, node, branchmerge, force, partial,
                 *args, **kwargs):
     wlock = repo.wlock()
     try:
         # branch |       |         |
         #  merge | force | partial | action
         # -------+-------+---------+--------------
         #    x   |   x   |    x    | linear-merge
         #    o   |   x   |    x    | branch-merge
         #    x   |   o   |    x    | overwrite (as clean update)
         #    o   |   o   |    x    | force-branch-merge (*1)
         #    x   |   x   |    o    |   (*)
         #    o   |   x   |    o    |   (*)
         #    x   |   o   |    o    | overwrite (as revert)
         #    o   |   o   |    o    |   (*)
         #
         # (*) don't care
         # (*1) deprecated, but used internally (e.g: "rebase --collapse")
 
         linearmerge = not branchmerge and not force and not partial
 
         if linearmerge or (branchmerge and force and not partial):
             # update standins for linear-merge or force-branch-merge,
             # because largefiles in the working directory may be modified
             lfdirstate = lfutil.openlfdirstate(repo.ui, repo)
             unsure, s = lfdirstate.status(match_.always(repo.root,
                                                         repo.getcwd()),
                                           [], False, False, False)
             for lfile in unsure + s.modified + s.added:
                 lfutil.updatestandin(repo, lfutil.standin(lfile))
 
         if linearmerge:
             # Only call updatelfiles on the standins that have changed
             # to save time
             oldstandins = lfutil.getstandinsstate(repo)
 
         result = orig(repo, node, branchmerge, force, partial, *args, **kwargs)
 
         filelist = None
         if linearmerge:
             newstandins = lfutil.getstandinsstate(repo)
             filelist = lfutil.getlfilestoupdate(oldstandins, newstandins)
 
         lfcommands.updatelfiles(repo.ui, repo, filelist=filelist,
                                 normallookup=partial)
 
         return result
     finally:
         wlock.release()
 
 def scmutilmarktouched(orig, repo, files, *args, **kwargs):
     result = orig(repo, files, *args, **kwargs)
 
     filelist = [lfutil.splitstandin(f) for f in files if lfutil.isstandin(f)]
     if filelist:
         lfcommands.updatelfiles(repo.ui, repo, filelist=filelist,
                                 printmessage=False, normallookup=True)
 
     return result

hgext/mq.py

@@ -1,3526 +1,3531
 # mq.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 version 2 or any later version.
 
 '''manage a stack of patches
 
 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)::
 
   create new patch                          qnew
   import existing patch                     qimport
 
   print patch series                        qseries
   print applied patches                     qapplied
 
   add known patch to applied stack          qpush
   remove patch from applied stack           qpop
   refresh contents of top applied patch     qrefresh
 
 By default, mq will automatically use git patches when required to
 avoid losing file mode changes, copy records, binary files or empty
 files creations or deletions. This behaviour can be configured with::
 
   [mq]
   git = auto/keep/yes/no
 
 If set to 'keep', mq will obey the [diff] section configuration while
 preserving existing git patches upon qrefresh. If set to 'yes' or
 'no', mq will override the [diff] section and always generate git or
 regular patches, possibly losing data in the second case.
 
 It may be desirable for mq changesets to be kept in the secret phase (see
 :hg:`help phases`), which can be enabled with the following setting::
 
   [mq]
   secret = True
 
 You will by default be managing a patch queue named "patches". You can
 create other, independent patch queues with the :hg:`qqueue` command.
 
 If the working directory contains uncommitted files, qpush, qpop and
 qgoto abort immediately. If -f/--force is used, the changes are
 discarded. Setting::
 
   [mq]
   keepchanges = True
 
 make them behave as if --keep-changes were passed, and non-conflicting
 local changes will be tolerated and preserved. If incompatible options
 such as -f/--force or --exact are passed, this setting is ignored.
 
 This extension used to provide a strip command. This command now lives
 in the strip extension.
 '''
 
 from mercurial.i18n import _
 from mercurial.node import bin, hex, short, nullid, nullrev
 from mercurial.lock import release
 from mercurial import commands, cmdutil, hg, scmutil, util, revset
 from mercurial import extensions, error, phases
 from mercurial import patch as patchmod
 from mercurial import localrepo
 from mercurial import subrepo
 import os, re, errno, shutil
 
 seriesopts = [('s', 'summary', None, _('print first line of patch header'))]
 
 cmdtable = {}
 command = cmdutil.command(cmdtable)
 testedwith = 'internal'
 
 # force load strip extension formerly included in mq and import some utility
 try:
     stripext = extensions.find('strip')
 except KeyError:
     # note: load is lazy so we could avoid the try-except,
     # but I (marmoute) prefer this explicit code.
     class dummyui(object):
         def debug(self, msg):
             pass
     stripext = extensions.load(dummyui(), 'strip', '')
 
 strip = stripext.strip
 checksubstate = stripext.checksubstate
 checklocalchanges = stripext.checklocalchanges
 
 
 # Patch names looks like unix-file names.
 # They must be joinable with queue directory and result in the patch path.
 normname = util.normpath
 
 class statusentry(object):
     def __init__(self, node, name):
         self.node, self.name = node, name
     def __repr__(self):
         return hex(self.node) + ':' + self.name
 
 # The order of the headers in 'hg export' HG patches:
 HGHEADERS = [
 #   '# HG changeset patch',
     '# User ',
     '# Date ',
     '#      ',
     '# Branch ',
     '# Node ID ',
     '# Parent  ', # can occur twice for merges - but that is not relevant for mq
-    '', # all lines after headers 'has' this prefix - simplifies the algorithm
     ]
 
 def inserthgheader(lines, header, value):
     """Assuming lines contains a HG patch header, add a header line with value.
     >>> try: inserthgheader([], '# Date ', 'z')
     ... except ValueError, inst: print "oops"
     oops
     >>> inserthgheader(['# HG changeset patch'], '# Date ', 'z')
     ['# HG changeset patch', '# Date z']
     >>> inserthgheader(['# HG changeset patch', ''], '# Date ', 'z')
     ['# HG changeset patch', '# Date z', '']
     >>> inserthgheader(['# HG changeset patch', '# User y'], '# Date ', 'z')
     ['# HG changeset patch', '# User y', '# Date z']
+    >>> inserthgheader(['# HG changeset patch', '# Date x', '# User y'],
+    ...                '# User ', 'z')
+    ['# HG changeset patch', '# Date x', '# User z']
     >>> inserthgheader(['# HG changeset patch', '# Date y'], '# Date ', 'z')
     ['# HG changeset patch', '# Date z']
     >>> inserthgheader(['# HG changeset patch', '', '# Date y'], '# Date ', 'z')
     ['# HG changeset patch', '# Date z', '', '# Date y']
     >>> inserthgheader(['# HG changeset patch', '# Parent  y'], '# Date ', 'z')
     ['# HG changeset patch', '# Date z', '# Parent  y']
     """
     start = lines.index('# HG changeset patch') + 1
     newindex = HGHEADERS.index(header)
+    bestpos = len(lines)
     for i in range(start, len(lines)):
         line = lines[i]
+        if not line.startswith('# '):
+            bestpos = min(bestpos, i)
+            break
         for lineindex, h in enumerate(HGHEADERS):
             if line.startswith(h):
-                if lineindex < newindex:
-                    break # next line
                 if lineindex == newindex:
                     lines[i] = header + value
-                else:
-                    lines.insert(i, header + value)
                 return lines
-    lines.append(header + value)
+                if lineindex > newindex:
+                    bestpos = min(bestpos, i)
+                break # next line
+    lines.insert(bestpos, header + value)
     return lines
 
 def insertplainheader(lines, header, value):
     if lines and lines[0] and ':' not in lines[0]:
         lines.insert(0, '')
     lines.insert(0, '%s: %s' % (header, value))
     return lines
 
 class patchheader(object):
     def __init__(self, pf, plainmode=False):
         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:
                 if not lines[-1].strip():
                     del lines[-1]
                 else:
                     break
 
         message = []
         comments = []
         user = None
         date = None
         parent = None
         format = None
         subject = None
         branch = None
         nodeid = None
         diffstart = 0
 
         for line in file(pf):
             line = line.rstrip()
             if (line.startswith('diff --git')
                 or (diffstart and line.startswith('+++ '))):
                 diffstart = 2
                 break
             diffstart = 0 # reset
             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 line.startswith("# Parent "):
                     parent = line[9:].lstrip() # handle double trailing space
                 elif line.startswith("# Branch "):
                     branch = line[9:]
                 elif line.startswith("# Node ID "):
                     nodeid = line[10:]
                 elif not line.startswith("# ") and line:
                     message.append(line)
                     format = None
             elif line == '# HG changeset patch':
                 message = []
                 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 != "tagdone" and (line.startswith("Date: ") or
                                            line.startswith("date: "))):
                 date = 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)
         # Remember the exact starting line of the patch diffs before consuming
         # empty lines, for external use by TortoiseHg and others
         self.diffstartline = len(comments)
         eatempty(message)
         eatempty(comments)
 
         # make sure message isn't empty
         if format and format.startswith("tag") and subject:
             message.insert(0, subject)
 
         self.message = message
         self.comments = comments
         self.user = user
         self.date = date
         self.parent = parent
         # nodeid and branch are for external use by TortoiseHg and others
         self.nodeid = nodeid
         self.branch = branch
         self.haspatch = diffstart > 1
         self.plainmode = (plainmode or
                           '# HG changeset patch' not in self.comments and
                           util.any(c.startswith('Date: ') or
                                    c.startswith('From: ')
                                    for c in self.comments))
 
     def setuser(self, user):
         if not self.updateheader(['From: ', '# User '], user):
             try:
                 inserthgheader(self.comments, '# User ', user)
             except ValueError:
                 if self.plainmode:
                     insertplainheader(self.comments, 'From', user)
                 else:
                     tmp = ['# HG changeset patch', '# User ' + user]
                     self.comments = tmp + self.comments
         self.user = user
 
     def setdate(self, date):
         if not self.updateheader(['Date: ', '# Date '], date):
             try:
                 inserthgheader(self.comments, '# Date ', date)
             except ValueError:
                 if self.plainmode:
                     insertplainheader(self.comments, 'Date', date)
                 else:
                     tmp = ['# HG changeset patch', '# Date ' + date]
                     self.comments = tmp + self.comments
         self.date = date
 
     def setparent(self, parent):
         if not (self.updateheader(['# Parent  '], parent) or
                 self.updateheader(['# Parent '], parent)):
             try:
                 inserthgheader(self.comments, '# Parent  ', parent)
             except ValueError:
                 if not self.plainmode:
                     tmp = ['# HG changeset patch', '# Parent  ' + parent]
                     self.comments = tmp + self.comments
         self.parent = parent
 
     def setmessage(self, message):
         if self.comments:
             self._delmsg()
         self.message = [message]
         if message:
             if self.plainmode and self.comments and self.comments[-1]:
                 self.comments.append('')
             self.comments.append(message)
 
     def updateheader(self, prefixes, new):
         '''Update all references to a field in the patch header.
         Return whether the field is present.'''
         res = False
         for prefix in prefixes:
             for i in xrange(len(self.comments)):
                 if self.comments[i].startswith(prefix):
                     self.comments[i] = prefix + new
                     res = True
                     break
         return res
 
     def __str__(self):
         s = '\n'.join(self.comments).rstrip()
         if not s:
             return ''
         return s + '\n\n'
 
     def _delmsg(self):
         '''Remove existing message, keeping the rest of the comments fields.
         If comments contains 'subject: ', message will prepend
         the field and a blank line.'''
         if self.message:
             subj = 'subject: ' + self.message[0].lower()
             for i in xrange(len(self.comments)):
                 if subj == self.comments[i].lower():
                     del self.comments[i]
                     self.message = self.message[2:]
                     break
         ci = 0
         for mi in self.message:
             while mi != self.comments[ci]:
                 ci += 1
             del self.comments[ci]
 
 def newcommit(repo, phase, *args, **kwargs):
     """helper dedicated to ensure a commit respect mq.secret setting
 
     It should be used instead of repo.commit inside the mq source for operation
     creating new changeset.
     """
     repo = repo.unfiltered()
     if phase is None:
         if repo.ui.configbool('mq', 'secret', False):
             phase = phases.secret
     if phase is not None:
         backup = repo.ui.backupconfig('phases', 'new-commit')
     try:
         if phase is not None:
             repo.ui.setconfig('phases', 'new-commit', phase, 'mq')
         return repo.commit(*args, **kwargs)
     finally:
         if phase is not None:
             repo.ui.restoreconfig(backup)
 
 class AbortNoCleanup(error.Abort):
     pass
 
 class queue(object):
     def __init__(self, ui, baseui, path, patchdir=None):
         self.basepath = path
         try:
             fh = open(os.path.join(path, 'patches.queue'))
             cur = fh.read().rstrip()
             fh.close()
             if not cur:
                 curpath = os.path.join(path, 'patches')
             else:
                 curpath = os.path.join(path, 'patches-' + cur)
         except IOError:
             curpath = os.path.join(path, 'patches')
         self.path = patchdir or curpath
         self.opener = scmutil.opener(self.path)
         self.ui = ui
         self.baseui = baseui
         self.applieddirty = False
         self.seriesdirty = False
         self.added = []
         self.seriespath = "series"
         self.statuspath = "status"
         self.guardspath = "guards"
         self.activeguards = None
         self.guardsdirty = False
         # Handle mq.git as a bool with extended values
         try:
             gitmode = ui.configbool('mq', 'git', None)
             if gitmode is None:
                 raise error.ConfigError
             self.gitmode = gitmode and 'yes' or 'no'
         except error.ConfigError:
             self.gitmode = ui.config('mq', 'git', 'auto').lower()
         self.plainmode = ui.configbool('mq', 'plain', False)
         self.checkapplied = True
 
     @util.propertycache
     def applied(self):
         def parselines(lines):
             for l in lines:
                 entry = l.split(':', 1)
                 if len(entry) > 1:
                     n, name = entry
                     yield statusentry(bin(n), name)
                 elif l.strip():
                     self.ui.warn(_('malformated mq status line: %s\n') % entry)
                 # else we ignore empty lines
         try:
             lines = self.opener.read(self.statuspath).splitlines()
             return list(parselines(lines))
         except IOError, e:
             if e.errno == errno.ENOENT:
                 return []
             raise
 
     @util.propertycache
     def fullseries(self):
         try:
             return self.opener.read(self.seriespath).splitlines()
         except IOError, e:
             if e.errno == errno.ENOENT:
                 return []
             raise
 
     @util.propertycache
     def series(self):
         self.parseseries()
         return self.series
 
     @util.propertycache
     def seriesguards(self):
         self.parseseries()
         return self.seriesguards
 
     def invalidate(self):
         for a in 'applied fullseries series seriesguards'.split():
             if a in self.__dict__:
                 delattr(self, a)
         self.applieddirty = False
         self.seriesdirty = False
         self.guardsdirty = False
         self.activeguards = None
 
     def diffopts(self, opts={}, patchfn=None):
         diffopts = patchmod.diffopts(self.ui, opts)
         if self.gitmode == 'auto':
             diffopts.upgrade = True
         elif self.gitmode == 'keep':
             pass
         elif self.gitmode in ('yes', 'no'):
             diffopts.git = self.gitmode == 'yes'
         else:
             raise util.Abort(_('mq.git option can be auto/keep/yes/no'
                                ' got %s') % self.gitmode)
         if patchfn:
             diffopts = self.patchopts(diffopts, patchfn)
         return diffopts
 
     def patchopts(self, diffopts, *patches):
         """Return a copy of input diff options with git set to true if
         referenced patch is a git patch and should be preserved as such.
         """
         diffopts = diffopts.copy()
         if not diffopts.git and self.gitmode == 'keep':
             for patchfn in patches:
                 patchf = self.opener(patchfn, 'r')
                 # if the patch was a git patch, refresh it as a git patch
                 for line in patchf:
                     if line.startswith('diff --git'):
                         diffopts.git = True
                         break
                 patchf.close()
         return diffopts
 
     def join(self, *p):
         return os.path.join(self.path, *p)
 
     def findseries(self, patch):
         def matchpatch(l):
             l = l.split('#', 1)[0]
             return l.strip() == patch
         for index, l in enumerate(self.fullseries):
             if matchpatch(l):
                 return index
         return None
 
     guard_re = re.compile(r'\s?#([-+][^-+# \t\r\n\f][^# \t\r\n\f]*)')
 
     def parseseries(self):
         self.series = []
         self.seriesguards = []
         for l in self.fullseries:
             h = l.find('#')
             if h == -1:
                 patch = l
                 comment = ''
             elif h == 0:
                 continue
             else:
                 patch = l[:h]
                 comment = l[h:]
             patch = patch.strip()
             if patch:
                 if patch in self.series:
                     raise util.Abort(_('%s appears more than once in %s') %
                                      (patch, self.join(self.seriespath)))
                 self.series.append(patch)
                 self.seriesguards.append(self.guard_re.findall(comment))
 
     def checkguard(self, guard):
         if not guard:
             return _('guard cannot be an empty string')
         bad_chars = '# \t\r\n\f'
         first = guard[0]
         if first in '-+':
             return (_('guard %r starts with invalid character: %r') %
                       (guard, first))
         for c in bad_chars:
             if c in guard:
                 return _('invalid character in guard %r: %r') % (guard, c)
 
     def setactive(self, guards):
         for guard in guards:
             bad = self.checkguard(guard)
             if bad:
                 raise util.Abort(bad)
         guards = sorted(set(guards))
         self.ui.debug('active guards: %s\n' % ' '.join(guards))
         self.activeguards = guards
         self.guardsdirty = True
 
     def active(self):
         if self.activeguards is None:
             self.activeguards = []
             try:
                 guards = self.opener.read(self.guardspath).split()
             except IOError, err:
                 if err.errno != errno.ENOENT:
                     raise
                 guards = []
             for i, guard in enumerate(guards):
                 bad = self.checkguard(guard)
                 if bad:
                     self.ui.warn('%s:%d: %s\n' %
                                  (self.join(self.guardspath), i + 1, bad))
                 else:
                     self.activeguards.append(guard)
         return self.activeguards
 
     def setguards(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.checkguard(g[1:])
             if bad:
                 raise util.Abort(bad)
         drop = self.guard_re.sub('', self.fullseries[idx])
         self.fullseries[idx] = drop + ''.join([' #' + g for g in guards])
         self.parseseries()
         self.seriesdirty = True
 
     def pushable(self, idx):
         if isinstance(idx, str):
             idx = self.series.index(idx)
         patchguards = self.seriesguards[idx]
         if not patchguards:
             return True, None
         guards = self.active()
         exactneg = [g for g in patchguards if g[0] == '-' and g[1:] in guards]
         if exactneg:
             return False, repr(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, repr(exactpos[0])
             return False, ' '.join(map(repr, pos))
         return True, ''
 
     def explainpushable(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 %s\n') %
                               (self.series[idx], why))
             if not pushable:
                 if why:
                     write(_('skipping %s - guarded by %s\n') %
                           (self.series[idx], why))
                 else:
                     write(_('skipping %s - no matching guards\n') %
                           self.series[idx])
 
     def savedirty(self):
         def writelist(items, path):
             fp = self.opener(path, 'w')
             for i in items:
                 fp.write("%s\n" % i)
             fp.close()
         if self.applieddirty:
             writelist(map(str, self.applied), self.statuspath)
             self.applieddirty = False
         if self.seriesdirty:
             writelist(self.fullseries, self.seriespath)
             self.seriesdirty = False
         if self.guardsdirty:
             writelist(self.activeguards, self.guardspath)
             self.guardsdirty = False
         if self.added:
             qrepo = self.qrepo()
             if qrepo:
                 qrepo[None].add(f for f in self.added if f not in qrepo[None])
             self.added = []
 
     def removeundo(self, repo):
         undo = repo.sjoin('undo')
         if not os.path.exists(undo):
             return
         try:
             os.unlink(undo)
         except OSError, inst:
             self.ui.warn(_('error removing undo: %s\n') % str(inst))
 
     def backup(self, repo, files, copy=False):
         # backup local changes in --force case
         for f in sorted(files):
             absf = repo.wjoin(f)
             if os.path.lexists(absf):
                 self.ui.note(_('saving current version of %s as %s\n') %
                              (f, f + '.orig'))
                 if copy:
                     util.copyfile(absf, absf + '.orig')
                 else:
                     util.rename(absf, absf + '.orig')
 
     def printdiff(self, repo, diffopts, node1, node2=None, files=None,
                   fp=None, changes=None, opts={}):
         stat = opts.get('stat')
         m = scmutil.match(repo[node1], files, opts)
         cmdutil.diffordiffstat(self.ui, repo, diffopts, node1, node2,  m,
                                changes, stat, fp)
 
     def mergeone(self, repo, mergeq, head, patch, rev, diffopts):
         # first try just applying the patch
         (err, n) = self.apply(repo, [patch], update_status=False,
                               strict=True, merge=rev)
 
         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)
         strip(self.ui, repo, [n], update=False, backup=False)
 
         ctx = repo[rev]
         ret = hg.merge(repo, rev)
         if ret:
             raise util.Abort(_("update returned %d") % ret)
         n = newcommit(repo, None, ctx.description(), ctx.user(), force=True)
         if n is None:
             raise util.Abort(_("repo commit failed"))
         try:
             ph = patchheader(mergeq.join(patch), self.plainmode)
         except Exception:
             raise util.Abort(_("unable to read %s") % patch)
 
         diffopts = self.patchopts(diffopts, patch)
         patchf = self.opener(patch, "w")
         comments = str(ph)
         if comments:
             patchf.write(comments)
         self.printdiff(repo, diffopts, head, n, fp=patchf)
         patchf.close()
         self.removeundo(repo)
         return (0, n)
 
     def qparents(self, repo, rev=None):
         """return the mq handled parent or p1
 
         In some case where mq get himself in being the parent of a merge the
         appropriate parent may be p2.
         (eg: an in progress merge started with mq disabled)
 
         If no parent are managed by mq, p1 is returned.
         """
         if rev is None:
             (p1, p2) = repo.dirstate.parents()
             if p2 == nullid:
                 return p1
             if not self.applied:
                 return None
             return self.applied[-1].node
         p1, p2 = repo.changelog.parents(rev)
         if p2 != nullid and p2 in [x.node for x in self.applied]:
             return p2
         return p1
 
     def mergepatch(self, repo, mergeq, series, diffopts):
         if not self.applied:
             # 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 = newcommit(repo, None, '[mq]: merge marker', force=True)
             self.removeundo(repo)
             self.applied.append(statusentry(n, pname))
             self.applieddirty = True
 
         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.explainpushable(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 = info[1]
             err, head = self.mergeone(repo, mergeq, head, patch, rev, diffopts)
             if head:
                 self.applied.append(statusentry(head, patch))
                 self.applieddirty = True
             if err:
                 return (err, head)
         self.savedirty()
         return (0, head)
 
     def patch(self, repo, patchfile):
         '''Apply patchfile  to the working directory.
         patchfile: name of patch file'''
         files = set()
         try:
             fuzz = patchmod.patch(self.ui, repo, patchfile, strip=1,
                                   files=files, eolmode=None)
             return (True, list(files), fuzz)
         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"))
             self.ui.traceback()
             return (False, list(files), False)
 
     def apply(self, repo, series, list=False, update_status=True,
               strict=False, patchdir=None, merge=None, all_files=None,
               tobackup=None, keepchanges=False):
         wlock = lock = tr = None
         try:
             wlock = repo.wlock()
             lock = repo.lock()
             tr = repo.transaction("qpush")
             try:
                 ret = self._apply(repo, series, list, update_status,
                                   strict, patchdir, merge, all_files=all_files,
                                   tobackup=tobackup, keepchanges=keepchanges)
                 tr.close()
                 self.savedirty()
                 return ret
             except AbortNoCleanup:
                 tr.close()
                 self.savedirty()
                 return 2, repo.dirstate.p1()
             except: # re-raises
                 try:
                     tr.abort()
                 finally:
                     repo.invalidate()
                     repo.dirstate.invalidate()
                     self.invalidate()
                 raise
         finally:
             release(tr, lock, wlock)
             self.removeundo(repo)
 
     def _apply(self, repo, series, list=False, update_status=True,
                strict=False, patchdir=None, merge=None, all_files=None,
                tobackup=None, keepchanges=False):
         """returns (error, hash)
 
         error = 1 for unable to read, 2 for patch failed, 3 for patch
         fuzz. tobackup is None or a set of files to backup before they
         are modified by a patch.
         """
         # TODO unify with commands.py
         if not patchdir:
             patchdir = self.path
         err = 0
         n = None
         for patchname in series:
             pushable, reason = self.pushable(patchname)
             if not pushable:
                 self.explainpushable(patchname, all_patches=True)
                 continue
             self.ui.status(_("applying %s\n") % patchname)
             pf = os.path.join(patchdir, patchname)
 
             try:
                 ph = patchheader(self.join(patchname), self.plainmode)
             except IOError:
                 self.ui.warn(_("unable to read %s\n") % patchname)
                 err = 1
                 break
 
             message = ph.message
             if not message:
                 # The commit message should not be translated
                 message = "imported patch %s\n" % patchname
             else:
                 if list:
                     # The commit message should not be translated
                     message.append("\nimported patch %s" % patchname)
                 message = '\n'.join(message)
 
             if ph.haspatch:
                 if tobackup:
                     touched = patchmod.changedfiles(self.ui, repo, pf)
                     touched = set(touched) & tobackup
                     if touched and keepchanges:
                         raise AbortNoCleanup(
                             _("local changes found, refresh first"))
                     self.backup(repo, touched, copy=True)
                     tobackup = tobackup - touched
                 (patcherr, files, fuzz) = self.patch(repo, pf)
                 if all_files is not None:
                     all_files.update(files)
                 patcherr = not patcherr
             else:
                 self.ui.warn(_("patch %s is empty\n") % patchname)
                 patcherr, files, fuzz = 0, [], 0
 
             if merge and files:
                 # Mark as removed/merged and update dirstate parent info
                 removed = []
                 merged = []
                 for f in files:
                     if os.path.lexists(repo.wjoin(f)):
                         merged.append(f)
                     else:
                         removed.append(f)
                 repo.dirstate.beginparentchange()
                 for f in removed:
                     repo.dirstate.remove(f)
                 for f in merged:
                     repo.dirstate.merge(f)
                 p1, p2 = repo.dirstate.parents()
                 repo.setparents(p1, merge)
                 repo.dirstate.endparentchange()
 
             if all_files and '.hgsubstate' in all_files:
                 wctx = repo[None]
                 pctx = repo['.']
                 overwrite = False
                 mergedsubstate = subrepo.submerge(repo, pctx, wctx, wctx,
                     overwrite)
                 files += mergedsubstate.keys()
 
             match = scmutil.matchfiles(repo, files or [])
             oldtip = repo['tip']
             n = newcommit(repo, None, message, ph.user, ph.date, match=match,
                           force=True)
             if repo['tip'] == oldtip:
                 raise util.Abort(_("qpush exactly duplicates child changeset"))
             if n is None:
                 raise util.Abort(_("repository commit failed"))
 
             if update_status:
                 self.applied.append(statusentry(n, patchname))
 
             if patcherr:
                 self.ui.warn(_("patch failed, rejects left in working dir\n"))
                 err = 2
                 break
 
             if fuzz and strict:
                 self.ui.warn(_("fuzz found when applying patch, stopping\n"))
                 err = 3
                 break
         return (err, n)
 
     def _cleanup(self, patches, numrevs, keep=False):
         if not keep:
             r = self.qrepo()
             if r:
                 r[None].forget(patches)
             for p in patches:
                 try:
                     os.unlink(self.join(p))
                 except OSError, inst:
                     if inst.errno != errno.ENOENT:
                         raise
 
         qfinished = []
         if numrevs:
             qfinished = self.applied[:numrevs]
             del self.applied[:numrevs]
             self.applieddirty = True
 
         unknown = []
 
         for (i, p) in sorted([(self.findseries(p), p) for p in patches],
                              reverse=True):
             if i is not None:
                 del self.fullseries[i]
             else:
                 unknown.append(p)
 
         if unknown:
             if numrevs:
                 rev  = dict((entry.name, entry.node) for entry in qfinished)
                 for p in unknown:
                     msg = _('revision %s refers to unknown patches: %s\n')
                     self.ui.warn(msg % (short(rev[p]), p))
             else:
                 msg = _('unknown patches: %s\n')
                 raise util.Abort(''.join(msg % p for p in unknown))
 
         self.parseseries()
         self.seriesdirty = True
         return [entry.node for entry in qfinished]
 
     def _revpatches(self, repo, revs):
         firstrev = repo[self.applied[0].node].rev()
         patches = []
         for i, rev in enumerate(revs):
 
             if rev < firstrev:
                 raise util.Abort(_('revision %d is not managed') % rev)
 
             ctx = repo[rev]
             base = self.applied[i].node
             if ctx.node() != base:
                 msg = _('cannot delete revision %d above applied patches')
                 raise util.Abort(msg % rev)
 
             patch = self.applied[i].name
             for fmt in ('[mq]: %s', 'imported patch %s'):
                 if ctx.description() == fmt % patch:
                     msg = _('patch %s finalized without changeset message\n')
                     repo.ui.status(msg % patch)
                     break
 
             patches.append(patch)
         return patches
 
     def finish(self, repo, revs):
         # Manually trigger phase computation to ensure phasedefaults is
         # executed before we remove the patches.
         repo._phasecache
         patches = self._revpatches(repo, sorted(revs))
         qfinished = self._cleanup(patches, len(patches))
         if qfinished and repo.ui.configbool('mq', 'secret', False):
             # only use this logic when the secret option is added
             oldqbase = repo[qfinished[0]]
             tphase = repo.ui.config('phases', 'new-commit', phases.draft)
             if oldqbase.phase() > tphase and oldqbase.p1().phase() <= tphase:
                 tr = repo.transaction('qfinish')
                 try:
                     phases.advanceboundary(repo, tr, tphase, qfinished)
                     tr.close()
                 finally:
                     tr.release()
 
     def delete(self, repo, patches, opts):
         if not patches and not opts.get('rev'):
             raise util.Abort(_('qdelete requires at least one revision or '
                                'patch name'))
 
         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)
             if patch not in realpatches:
                 realpatches.append(patch)
 
         numrevs = 0
         if opts.get('rev'):
             if not self.applied:
                 raise util.Abort(_('no patches applied'))
             revs = scmutil.revrange(repo, opts.get('rev'))
             revs.sort()
             revpatches = self._revpatches(repo, revs)
             realpatches += revpatches
             numrevs = len(revpatches)
 
         self._cleanup(realpatches, numrevs, opts.get('keep'))
 
     def checktoppatch(self, repo):
         '''check that working directory is at qtip'''
         if self.applied:
             top = self.applied[-1].node
             patch = self.applied[-1].name
             if repo.dirstate.p1() != top:
                 raise util.Abort(_("working directory revision is not qtip"))
             return top, patch
         return None, None
 
     def putsubstate2changes(self, substatestate, changes):
         for files in changes[:3]:
             if '.hgsubstate' in files:
                 return # already listed up
         # not yet listed up
         if substatestate in 'a?':
             changes[1].append('.hgsubstate')
         elif substatestate in 'r':
             changes[2].append('.hgsubstate')
         else: # modified
             changes[0].append('.hgsubstate')
 
     def checklocalchanges(self, repo, force=False, refresh=True):
         excsuffix = ''
         if refresh:
             excsuffix = ', refresh first'
             # plain versions for i18n tool to detect them
             _("local changes found, refresh first")
             _("local changed subrepos found, refresh first")
         return checklocalchanges(repo, force, excsuffix)
 
     _reserved = ('series', 'status', 'guards', '.', '..')
     def checkreservedname(self, name):
         if name in self._reserved:
             raise util.Abort(_('"%s" cannot be used as the name of a patch')
                              % name)
         for prefix in ('.hg', '.mq'):
             if name.startswith(prefix):
                 raise util.Abort(_('patch name cannot begin with "%s"')
                                  % prefix)
         for c in ('#', ':'):
             if c in name:
                 raise util.Abort(_('"%s" cannot be used in the name of a patch')
                                  % c)
 
     def checkpatchname(self, name, force=False):
         self.checkreservedname(name)
         if not force and os.path.exists(self.join(name)):
             if os.path.isdir(self.join(name)):
                 raise util.Abort(_('"%s" already exists as a directory')
                                  % name)
             else:
                 raise util.Abort(_('patch "%s" already exists') % name)
 
     def checkkeepchanges(self, keepchanges, force):
         if force and keepchanges:
             raise util.Abort(_('cannot use both --force and --keep-changes'))
 
     def new(self, repo, patchfn, *pats, **opts):
         """options:
            msg: a string or a no-argument function returning a string
         """
         msg = opts.get('msg')
         edit = opts.get('edit')
         editform = opts.get('editform', 'mq.qnew')
         user = opts.get('user')
         date = opts.get('date')
         if date:
             date = util.parsedate(date)
         diffopts = self.diffopts({'git': opts.get('git')})
         if opts.get('checkname', True):
             self.checkpatchname(patchfn)
         inclsubs = checksubstate(repo)
         if inclsubs:
             substatestate = repo.dirstate['.hgsubstate']
         if opts.get('include') or opts.get('exclude') or pats:
             match = scmutil.match(repo[None], pats, opts)
             # detect missing files in pats
             def badfn(f, msg):
                 if f != '.hgsubstate': # .hgsubstate is auto-created
                     raise util.Abort('%s: %s' % (f, msg))
             match.bad = badfn
             changes = repo.status(match=match)
         else:
             changes = self.checklocalchanges(repo, force=True)
         commitfiles = list(inclsubs)
         for files in changes[:3]:
             commitfiles.extend(files)
         match = scmutil.matchfiles(repo, commitfiles)
         if len(repo[None].parents()) > 1:
             raise util.Abort(_('cannot manage merge changesets'))
         self.checktoppatch(repo)
         insert = self.fullseriesend()
         wlock = repo.wlock()
         try:
             try:
                 # if patch file write fails, abort early
                 p = self.opener(patchfn, "w")
             except IOError, e:
                 raise util.Abort(_('cannot write patch "%s": %s')
                                  % (patchfn, e.strerror))
             try:
                 defaultmsg = "[mq]: %s" % patchfn
                 editor = cmdutil.getcommiteditor(editform=editform)
                 if edit:
                     def finishdesc(desc):
                         if desc.rstrip():
                             return desc
                         else:
                             return defaultmsg
                     # i18n: this message is shown in editor with "HG: " prefix
                     extramsg = _('Leave message empty to use default message.')
                     editor = cmdutil.getcommiteditor(finishdesc=finishdesc,
                                                      extramsg=extramsg,
                                                      editform=editform)
                     commitmsg = msg
                 else:
                     commitmsg = msg or defaultmsg
 
                 n = newcommit(repo, None, commitmsg, user, date, match=match,
                               force=True, editor=editor)
                 if n is None:
                     raise util.Abort(_("repo commit failed"))
                 try:
                     self.fullseries[insert:insert] = [patchfn]
                     self.applied.append(statusentry(n, patchfn))
                     self.parseseries()
                     self.seriesdirty = True
                     self.applieddirty = True
                     nctx = repo[n]
                     ph = patchheader(self.join(patchfn), self.plainmode)
                     if user:
                         ph.setuser(user)
                     if date:
                         ph.setdate('%s %s' % date)
                     ph.setparent(hex(nctx.p1().node()))
                     msg = nctx.description().strip()
                     if msg == defaultmsg.strip():
                         msg = ''
                     ph.setmessage(msg)
                     p.write(str(ph))
                     if commitfiles:
                         parent = self.qparents(repo, n)
                         if inclsubs:
                             self.putsubstate2changes(substatestate, changes)
                         chunks = patchmod.diff(repo, node1=parent, node2=n,
                                                changes=changes, opts=diffopts)
                         for chunk in chunks:
                             p.write(chunk)
                     p.close()
                     r = self.qrepo()
                     if r:
                         r[None].add([patchfn])
                 except: # re-raises
                     repo.rollback()
                     raise
             except Exception:
                 patchpath = self.join(patchfn)
                 try:
                     os.unlink(patchpath)
                 except OSError:
                     self.ui.warn(_('error unlinking %s\n') % patchpath)
                 raise
             self.removeundo(repo)
         finally:
             release(wlock)
 
     def isapplied(self, patch):
         """returns (index, rev, patch)"""
         for i, a in enumerate(self.applied):
             if a.name == patch:
                 return (i, a.node, 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 (as string) 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):
         def partialname(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 self.series and self.applied:
                 if s == 'qtip':
                     return self.series[self.seriesend(True) - 1]
                 if s == 'qbase':
                     return self.series[0]
             return None
 
         if patch in self.series:
             return patch
 
         if not os.path.isfile(self.join(patch)):
             try:
                 sno = int(patch)
             except (ValueError, OverflowError):
                 pass
             else:
                 if -len(self.series) <= sno < len(self.series):
                     return self.series[sno]
 
             if not strict:
                 res = partialname(patch)
                 if res:
                     return res
                 minus = patch.rfind('-')
                 if minus >= 0:
                     res = partialname(patch[:minus])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(patch[minus + 1:] or 1)
                         except (ValueError, OverflowError):
                             pass
                         else:
                             if i - off >= 0:
                                 return self.series[i - off]
                 plus = patch.rfind('+')
                 if plus >= 0:
                     res = partialname(patch[:plus])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(patch[plus + 1:] or 1)
                         except (ValueError, OverflowError):
                             pass
                         else:
                             if i + off < len(self.series):
                                 return self.series[i + off]
         raise util.Abort(_("patch %s not in series") % patch)
 
     def push(self, repo, patch=None, force=False, list=False, mergeq=None,
              all=False, move=False, exact=False, nobackup=False,
              keepchanges=False):
         self.checkkeepchanges(keepchanges, force)
         diffopts = self.diffopts()
         wlock = repo.wlock()
         try:
             heads = []
             for hs in repo.branchmap().itervalues():
                 heads.extend(hs)
             if not heads:
                 heads = [nullid]
             if repo.dirstate.p1() not in heads and not exact:
                 self.ui.status(_("(working directory not at a head)\n"))
 
             if not self.series:
                 self.ui.warn(_('no patches in series\n'))
                 return 0
 
             # Suppose our series file is: A B C and the current 'top'
             # patch is B. qpush C should be performed (moving forward)
             # qpush B is a NOP (no change) qpush A is an error (can't
             # go backwards with qpush)
             if patch:
                 patch = self.lookup(patch)
                 info = self.isapplied(patch)
                 if info and info[0] >= len(self.applied) - 1:
                     self.ui.warn(
                         _('qpush: %s is already at the top\n') % patch)
                     return 0
 
                 pushable, reason = self.pushable(patch)
                 if pushable:
                     if self.series.index(patch) < self.seriesend():
                         raise util.Abort(
                             _("cannot push to a previous patch: %s") % patch)
                 else:
                     if reason:
                         reason = _('guarded by %s') % reason
                     else:
                         reason = _('no matching guards')
                     self.ui.warn(_("cannot push '%s' - %s\n") % (patch, reason))
                     return 1
             elif all:
                 patch = self.series[-1]
                 if self.isapplied(patch):
                     self.ui.warn(_('all patches are currently applied\n'))
                     return 0
 
             # Following the above example, starting at 'top' of B:
             # qpush should be performed (pushes C), but a subsequent
             # qpush without an argument is an error (nothing to
             # apply). This allows a loop of "...while hg qpush..." to
             # work as it detects an error when done
             start = self.seriesend()
             if start == len(self.series):
                 self.ui.warn(_('patch series already fully applied\n'))
                 return 1
             if not force and not keepchanges:
                 self.checklocalchanges(repo, refresh=self.applied)
 
             if exact:
                 if keepchanges:
                     raise util.Abort(
                         _("cannot use --exact and --keep-changes together"))
                 if move:
                     raise util.Abort(_('cannot use --exact and --move '
                                        'together'))
                 if self.applied:
                     raise util.Abort(_('cannot push --exact with applied '
                                        'patches'))
                 root = self.series[start]
                 target = patchheader(self.join(root), self.plainmode).parent
                 if not target:
                     raise util.Abort(
                         _("%s does not have a parent recorded") % root)
                 if not repo[target] == repo['.']:
                     hg.update(repo, target)
 
             if move:
                 if not patch:
                     raise util.Abort(_("please specify the patch to move"))
                 for fullstart, rpn in enumerate(self.fullseries):
                     # strip markers for patch guards
                     if self.guard_re.split(rpn, 1)[0] == self.series[start]:
                         break
                 for i, rpn in enumerate(self.fullseries[fullstart:]):
                     # strip markers for patch guards
                     if self.guard_re.split(rpn, 1)[0] == patch:
                         break
                 index = fullstart + i
                 assert index < len(self.fullseries)
                 fullpatch = self.fullseries[index]
                 del self.fullseries[index]
                 self.fullseries.insert(fullstart, fullpatch)
                 self.parseseries()
                 self.seriesdirty = True
 
             self.applieddirty = True
             if start > 0:
                 self.checktoppatch(repo)
             if not patch:
                 patch = self.series[start]
                 end = start + 1
             else:
                 end = self.series.index(patch, start) + 1
 
             tobackup = set()
             if (not nobackup and force) or keepchanges:
                 status = self.checklocalchanges(repo, force=True)
                 if keepchanges:
                     tobackup.update(status.modified + status.added +
                                     status.removed + status.deleted)
                 else:
                     tobackup.update(status.modified + status.added)
 
             s = self.series[start:end]
             all_files = set()
             try:
                 if mergeq:
                     ret = self.mergepatch(repo, mergeq, s, diffopts)
                 else:
                     ret = self.apply(repo, s, list, all_files=all_files,
                                      tobackup=tobackup, keepchanges=keepchanges)
             except: # re-raises
                 self.ui.warn(_('cleaning up working directory...'))
                 node = repo.dirstate.p1()
                 hg.revert(repo, node, None)
                 # only remove unknown files that we know we touched or
                 # created while patching
                 for f in all_files:
                     if f not in repo.dirstate:
                         util.unlinkpath(repo.wjoin(f), ignoremissing=True)
                 self.ui.warn(_('done\n'))
                 raise
 
             if not self.applied:
                 return ret[0]
             top = self.applied[-1].name
             if ret[0] and ret[0] > 1:
                 msg = _("errors during apply, please fix and refresh %s\n")
                 self.ui.write(msg % top)
             else:
                 self.ui.write(_("now at: %s\n") % top)
             return ret[0]
 
         finally:
             wlock.release()
 
     def pop(self, repo, patch=None, force=False, update=True, all=False,
             nobackup=False, keepchanges=False):
         self.checkkeepchanges(keepchanges, force)
         wlock = repo.wlock()
         try:
             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 not self.applied:
                 # Allow qpop -a to work repeatedly,
                 # but not qpop without an argument
                 self.ui.warn(_("no patches applied\n"))
                 return not all
 
             if all:
                 start = 0
             elif patch:
                 start = info[0] + 1
             else:
                 start = len(self.applied) - 1
 
             if start >= len(self.applied):
                 self.ui.warn(_("qpop: %s is already at the top\n") % patch)
                 return
 
             if not update:
                 parents = repo.dirstate.parents()
                 rr = [x.node for x in self.applied]
                 for p in parents:
                     if p in rr:
                         self.ui.warn(_("qpop: forcing dirstate update\n"))
                         update = True
             else:
                 parents = [p.node() for p in repo[None].parents()]
                 needupdate = False
                 for entry in self.applied[start:]:
                     if entry.node in parents:
                         needupdate = True
                         break
                 update = needupdate
 
             tobackup = set()
             if update:
                 s = self.checklocalchanges(repo, force=force or keepchanges)
                 if force:
                     if not nobackup:
                         tobackup.update(s.modified + s.added)
                 elif keepchanges:
                     tobackup.update(s.modified + s.added +
                                     s.removed + s.deleted)
 
             self.applieddirty = True
             end = len(self.applied)
             rev = self.applied[start].node
 
             try:
                 heads = repo.changelog.heads(rev)
             except error.LookupError:
                 node = short(rev)
                 raise util.Abort(_('trying to pop unknown node %s') % node)
 
             if heads != [self.applied[-1].node]:
                 raise util.Abort(_("popping would remove a revision not "
                                    "managed by this patch queue"))
             if not repo[self.applied[-1].node].mutable():
                 raise util.Abort(
                     _("popping would remove an immutable revision"),
                     hint=_('see "hg help phases" for details'))
 
             # we know there are no local changes, so we can make a simplified
             # form of hg.update.
             if update:
                 qp = self.qparents(repo, rev)
                 ctx = repo[qp]
                 m, a, r, d = repo.status(qp, '.')[:4]
                 if d:
                     raise util.Abort(_("deletions found between repo revs"))
 
                 tobackup = set(a + m + r) & tobackup
                 if keepchanges and tobackup:
                     raise util.Abort(_("local changes found, refresh first"))
                 self.backup(repo, tobackup)
                 repo.dirstate.beginparentchange()
                 for f in a:
                     util.unlinkpath(repo.wjoin(f), ignoremissing=True)
                     repo.dirstate.drop(f)
                 for f in m + r:
                     fctx = ctx[f]
                     repo.wwrite(f, fctx.data(), fctx.flags())
                     repo.dirstate.normal(f)
                 repo.setparents(qp, nullid)
                 repo.dirstate.endparentchange()
             for patch in reversed(self.applied[start:end]):
                 self.ui.status(_("popping %s\n") % patch.name)
             del self.applied[start:end]
             strip(self.ui, repo, [rev], update=False, backup=False)
             for s, state in repo['.'].substate.items():
                 repo['.'].sub(s).get(state)
             if self.applied:
                 self.ui.write(_("now at: %s\n") % self.applied[-1].name)
             else:
                 self.ui.write(_("patch queue now empty\n"))
         finally:
             wlock.release()
 
     def diff(self, repo, pats, opts):
         top, patch = self.checktoppatch(repo)
         if not top:
             self.ui.write(_("no patches applied\n"))
             return
         qp = self.qparents(repo, top)
         if opts.get('reverse'):
             node1, node2 = None, qp
         else:
             node1, node2 = qp, None
         diffopts = self.diffopts(opts, patch)
         self.printdiff(repo, diffopts, node1, node2, files=pats, opts=opts)
 
     def refresh(self, repo, pats=None, **opts):
         if not self.applied:
             self.ui.write(_("no patches applied\n"))
             return 1
         msg = opts.get('msg', '').rstrip()
         edit = opts.get('edit')
         editform = opts.get('editform', 'mq.qrefresh')
         newuser = opts.get('user')
         newdate = opts.get('date')
         if newdate:
             newdate = '%d %d' % util.parsedate(newdate)
         wlock = repo.wlock()
 
         try:
             self.checktoppatch(repo)
             (top, patchfn) = (self.applied[-1].node, self.applied[-1].name)
             if repo.changelog.heads(top) != [top]:
                 raise util.Abort(_("cannot refresh a revision with children"))
             if not repo[top].mutable():
                 raise util.Abort(_("cannot refresh immutable revision"),
                                  hint=_('see "hg help phases" for details'))
 
             cparents = repo.changelog.parents(top)
             patchparent = self.qparents(repo, top)
 
             inclsubs = checksubstate(repo, hex(patchparent))
             if inclsubs:
                 substatestate = repo.dirstate['.hgsubstate']
 
             ph = patchheader(self.join(patchfn), self.plainmode)
             diffopts = self.diffopts({'git': opts.get('git')}, patchfn)
             if newuser:
                 ph.setuser(newuser)
             if newdate:
                 ph.setdate(newdate)
             ph.setparent(hex(patchparent))
 
             # only commit new patch when write is complete
             patchf = self.opener(patchfn, 'w', atomictemp=True)
 
             # update the dirstate in place, strip off the qtip commit
             # and then commit.
             #
             # this should really read:
             #   mm, dd, aa = repo.status(top, patchparent)[:3]
             # but we do it backwards to take advantage of manifest/changelog
             # caching against the next repo.status call
             mm, aa, dd = repo.status(patchparent, top)[:3]
             changes = repo.changelog.read(top)
             man = repo.manifest.read(changes[0])
             aaa = aa[:]
             matchfn = scmutil.match(repo[None], pats, opts)
             # in short mode, we only diff the files included in the
             # patch already plus specified files
             if opts.get('short'):
                 # if amending a patch, we start with existing
                 # files plus specified files - unfiltered
                 match = scmutil.matchfiles(repo, mm + aa + dd + matchfn.files())
                 # filter with include/exclude options
                 matchfn = scmutil.match(repo[None], opts=opts)
             else:
                 match = scmutil.matchall(repo)
             m, a, r, d = repo.status(match=match)[:4]
             mm = set(mm)
             aa = set(aa)
             dd = set(dd)
 
             # we might end up with files that were added between
             # qtip 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.add(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:
                     dd.remove(x)
                     mm.add(x)
                 else:
                     aa.add(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:
                     aa.remove(x)
                     forget.append(x)
                     continue
                 else:
                     mm.discard(x)
                 dd.add(x)
 
             m = list(mm)
             r = list(dd)
             a = list(aa)
 
             # create 'match' that includes the files to be recommitted.
             # apply matchfn via repo.status to ensure correct case handling.
             cm, ca, cr, cd = repo.status(patchparent, match=matchfn)[:4]
             allmatches = set(cm + ca + cr + cd)
             refreshchanges = [x.intersection(allmatches) for x in (mm, aa, dd)]
 
             files = set(inclsubs)
             for x in refreshchanges:
                 files.update(x)
             match = scmutil.matchfiles(repo, files)
 
             bmlist = repo[top].bookmarks()
 
             try:
                 repo.dirstate.beginparentchange()
                 if diffopts.git or diffopts.upgrade:
                     copies = {}
                     for dst in a:
                         src = repo.dirstate.copied(dst)
                         # during qfold, the source file for copies may
                         # be removed. Treat this as a simple add.
                         if src is not None and src in repo.dirstate:
                             copies.setdefault(src, []).append(dst)
                         repo.dirstate.add(dst)
                     # remember the copies between patchparent and qtip
                     for dst in aaa:
                         f = repo.file(dst)
                         src = f.renamed(man[dst])
                         if src:
                             copies.setdefault(src[0], []).extend(
                                 copies.get(dst, []))
                             if dst in a:
                                 copies[src[0]].append(dst)
                         # we can't copy a file created by the patch itself
                         if dst in copies:
                             del copies[dst]
                     for src, dsts in copies.iteritems():
                         for dst in dsts:
                             repo.dirstate.copy(src, dst)
                 else:
                     for dst in a:
                         repo.dirstate.add(dst)
                     # Drop useless copy information
                     for f in list(repo.dirstate.copies()):
                         repo.dirstate.copy(None, f)
                 for f in r:
                     repo.dirstate.remove(f)
                 # if the patch excludes a modified file, mark that
                 # file with mtime=0 so status can see it.
                 mm = []
                 for i in xrange(len(m) - 1, -1, -1):
                     if not matchfn(m[i]):
                         mm.append(m[i])
                         del m[i]
                 for f in m:
                     repo.dirstate.normal(f)
                 for f in mm:
                     repo.dirstate.normallookup(f)
                 for f in forget:
                     repo.dirstate.drop(f)
 
                 user = ph.user or changes[1]
 
                 oldphase = repo[top].phase()
 
                 # assumes strip can roll itself back if interrupted
                 repo.setparents(*cparents)
                 repo.dirstate.endparentchange()
                 self.applied.pop()
                 self.applieddirty = True
                 strip(self.ui, repo, [top], update=False, backup=False)
             except: # re-raises
                 repo.dirstate.invalidate()
                 raise
 
             try:
                 # might be nice to attempt to roll back strip after this
 
                 defaultmsg = "[mq]: %s" % patchfn
                 editor = cmdutil.getcommiteditor(editform=editform)
                 if edit:
                     def finishdesc(desc):
                         if desc.rstrip():
                             ph.setmessage(desc)
                             return desc
                         return defaultmsg
                     # i18n: this message is shown in editor with "HG: " prefix
                     extramsg = _('Leave message empty to use default message.')
                     editor = cmdutil.getcommiteditor(finishdesc=finishdesc,
                                                      extramsg=extramsg,
                                                      editform=editform)
                     message = msg or "\n".join(ph.message)
                 elif not msg:
                     if not ph.message:
                         message = defaultmsg
                     else:
                         message = "\n".join(ph.message)
                 else:
                     message = msg
                     ph.setmessage(msg)
 
                 # Ensure we create a new changeset in the same phase than
                 # the old one.
                 n = newcommit(repo, oldphase, message, user, ph.date,
                               match=match, force=True, editor=editor)
                 # only write patch after a successful commit
                 c = [list(x) for x in refreshchanges]
                 if inclsubs:
                     self.putsubstate2changes(substatestate, c)
                 chunks = patchmod.diff(repo, patchparent,
                                        changes=c, opts=diffopts)
                 comments = str(ph)
                 if comments:
                     patchf.write(comments)
                 for chunk in chunks:
                     patchf.write(chunk)
                 patchf.close()
 
                 marks = repo._bookmarks
                 for bm in bmlist:
                     marks[bm] = n
                 marks.write()
 
                 self.applied.append(statusentry(n, patchfn))
             except: # re-raises
                 ctx = repo[cparents[0]]
                 repo.dirstate.rebuild(ctx.node(), ctx.manifest())
                 self.savedirty()
                 self.ui.warn(_('refresh interrupted while patch was popped! '
                                '(revert --all, qpush to recover)\n'))
                 raise
         finally:
             wlock.release()
             self.removeundo(repo)
 
     def init(self, repo, create=False):
         if not create and os.path.isdir(self.path):
             raise util.Abort(_("patch queue directory already exists"))
         try:
             os.mkdir(self.path)
         except OSError, inst:
             if inst.errno != errno.EEXIST or not create:
                 raise
         if create:
             return self.qrepo(create=True)
 
     def unapplied(self, repo, patch=None):
         if patch and patch not in self.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         if not patch:
             start = self.seriesend()
         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.explainpushable(i)
         return unapplied
 
     def qseries(self, repo, missing=None, start=0, length=None, status=None,
                 summary=False):
         def displayname(pfx, patchname, state):
             if pfx:
                 self.ui.write(pfx)
             if summary:
                 ph = patchheader(self.join(patchname), self.plainmode)
                 msg = ph.message and ph.message[0] or ''
                 if self.ui.formatted():
                     width = self.ui.termwidth() - len(pfx) - len(patchname) - 2
                     if width > 0:
                         msg = util.ellipsis(msg, width)
                     else:
                         msg = ''
                 self.ui.write(patchname, label='qseries.' + state)
                 self.ui.write(': ')
                 self.ui.write(msg, label='qseries.message.' + state)
             else:
                 self.ui.write(patchname, label='qseries.' + state)
             self.ui.write('\n')
 
         applied = set([p.name for p in self.applied])
         if length is None:
             length = len(self.series) - start
         if not missing:
             if self.ui.verbose:
                 idxwidth = len(str(start + length - 1))
             for i in xrange(start, start + length):
                 patch = self.series[i]
                 if patch in applied:
                     char, state = 'A', 'applied'
                 elif self.pushable(i)[0]:
                     char, state = 'U', 'unapplied'
                 else:
                     char, state = 'G', 'guarded'
                 pfx = ''
                 if self.ui.verbose:
                     pfx = '%*d %s ' % (idxwidth, i, char)
                 elif status and status != char:
                     continue
                 displayname(pfx, patch, state)
         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.statuspath, self.seriespath,
                                    self.guardspath)
                         and not fl.startswith('.')):
                         msng_list.append(fl)
             for x in sorted(msng_list):
                 pfx = self.ui.verbose and ('D ') or ''
                 displayname(pfx, x, 'missing')
 
     def issaveline(self, l):
         if l.name == '.hg.patches.save.line':
             return True
 
     def qrepo(self, create=False):
         ui = self.baseui.copy()
         if create or os.path.isdir(self.join(".hg")):
             return hg.repository(ui, path=self.path, create=create)
 
     def restore(self, repo, rev, delete=None, qupdate=None):
         desc = repo[rev].description().strip()
         lines = desc.splitlines()
         i = 0
         datastart = None
         series = []
         applied = []
         qpp = None
         for i, line in enumerate(lines):
             if line == 'Patch Data:':
                 datastart = i + 1
             elif line.startswith('Dirstate:'):
                 l = line.rstrip()
                 l = l[10:].split(' ')
                 qpp = [bin(x) for x in l]
             elif datastart is not None:
                 l = line.rstrip()
                 n, name = l.split(':', 1)
                 if n:
                     applied.append(statusentry(bin(n), name))
                 else:
                     series.append(l)
         if datastart is None:
             self.ui.warn(_("no saved patch data found\n"))
             return 1
         self.ui.warn(_("restoring status: %s\n") % lines[0])
         self.fullseries = series
         self.applied = applied
         self.parseseries()
         self.seriesdirty = True
         self.applieddirty = True
         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") % short(rev))
                 pp = repo.dirstate.parents()
                 if rev in pp:
                     update = True
                 else:
                     update = False
                 strip(self.ui, repo, [rev], update=update, backup=False)
         if qpp:
             self.ui.warn(_("saved queue repository parents: %s %s\n") %
                          (short(qpp[0]), short(qpp[1])))
             if qupdate:
                 self.ui.status(_("updating queue directory\n"))
                 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 not self.applied:
             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
 
         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" % (hex(pp[0]), hex(pp[1]))
         msg += "\n\nPatch Data:\n"
         msg += ''.join('%s\n' % x for x in self.applied)
         msg += ''.join(':%s\n' % x for x in self.fullseries)
         n = repo.commit(msg, force=True)
         if not n:
             self.ui.warn(_("repo commit failed\n"))
             return 1
         self.applied.append(statusentry(n, '.hg.patches.save.line'))
         self.applieddirty = True
         self.removeundo(repo)
 
     def fullseriesend(self):
         if self.applied:
             p = self.applied[-1].name
             end = self.findseries(p)
             if end is None:
                 return len(self.fullseries)
             return end + 1
         return 0
 
     def seriesend(self, all_patches=False):
         """If all_patches is False, return the index of the next pushable patch
         in the series, or the series length. If all_patches is True, return the
         index of the first patch past the last applied one.
         """
         end = 0
         def nextpatch(start):
             if all_patches or start >= len(self.series):
                 return start
             for i in xrange(start, len(self.series)):
                 p, reason = self.pushable(i)
                 if p:
                     return i
                 self.explainpushable(i)
             return len(self.series)
         if self.applied:
             p = self.applied[-1].name
             try:
                 end = self.series.index(p)
             except ValueError:
                 return 0
             return nextpatch(end + 1)
         return nextpatch(end)
 
     def appliedname(self, index):
         pname = self.applied[index].name
         if not self.ui.verbose:
             p = pname
         else:
             p = str(self.series.index(pname)) + " " + pname
         return p
 
     def qimport(self, repo, files, patchname=None, rev=None, existing=None,
                 force=None, git=False):
         def checkseries(patchname):
             if patchname in self.series:
                 raise util.Abort(_('patch %s is already in the series file')
                                  % patchname)
 
         if rev:
             if files:
                 raise util.Abort(_('option "-r" not valid when importing '
                                    'files'))
             rev = scmutil.revrange(repo, rev)
             rev.sort(reverse=True)
         elif not files:
             raise util.Abort(_('no files or revisions specified'))
         if (len(files) > 1 or len(rev) > 1) and patchname:
             raise util.Abort(_('option "-n" not valid when importing multiple '
                                'patches'))
         imported = []
         if rev:
             # If mq patches are applied, we can only import revisions
             # that form a linear path to qbase.
             # Otherwise, they should form a linear path to a head.
             heads = repo.changelog.heads(repo.changelog.node(rev.first()))
             if len(heads) > 1:
                 raise util.Abort(_('revision %d is the root of more than one '
                                    'branch') % rev.last())
             if self.applied:
                 base = repo.changelog.node(rev.first())
                 if base in [n.node for n in self.applied]:
                     raise util.Abort(_('revision %d is already managed')
                                      % rev.first())
                 if heads != [self.applied[-1].node]:
                     raise util.Abort(_('revision %d is not the parent of '
                                        'the queue') % rev.first())
                 base = repo.changelog.rev(self.applied[0].node)
                 lastparent = repo.changelog.parentrevs(base)[0]
             else:
                 if heads != [repo.changelog.node(rev.first())]:
                     raise util.Abort(_('revision %d has unmanaged children')
                                      % rev.first())
                 lastparent = None
 
             diffopts = self.diffopts({'git': git})
             tr = repo.transaction('qimport')
             try:
                 for r in rev:
                     if not repo[r].mutable():
                         raise util.Abort(_('revision %d is not mutable') % r,
                                          hint=_('see "hg help phases" '
                                                 'for details'))
                     p1, p2 = repo.changelog.parentrevs(r)
                     n = repo.changelog.node(r)
                     if p2 != nullrev:
                         raise util.Abort(_('cannot import merge revision %d')
                                          % r)
                     if lastparent and lastparent != r:
                         raise util.Abort(_('revision %d is not the parent of '
                                            '%d')
                                          % (r, lastparent))
                     lastparent = p1
 
                     if not patchname:
                         patchname = normname('%d.diff' % r)
                     checkseries(patchname)
                     self.checkpatchname(patchname, force)
                     self.fullseries.insert(0, patchname)
 
                     patchf = self.opener(patchname, "w")
                     cmdutil.export(repo, [n], fp=patchf, opts=diffopts)
                     patchf.close()
 
                     se = statusentry(n, patchname)
                     self.applied.insert(0, se)
 
                     self.added.append(patchname)
                     imported.append(patchname)
                     patchname = None
                     if rev and repo.ui.configbool('mq', 'secret', False):
                         # if we added anything with --rev, move the secret root
                         phases.retractboundary(repo, tr, phases.secret, [n])
                     self.parseseries()
                     self.applieddirty = True
                     self.seriesdirty = True
                 tr.close()
             finally:
                 tr.release()
 
         for i, filename in enumerate(files):
             if existing:
                 if filename == '-':
                     raise util.Abort(_('-e is incompatible with import from -'))
                 filename = normname(filename)
                 self.checkreservedname(filename)
                 if util.url(filename).islocal():
                     originpath = self.join(filename)
                     if not os.path.isfile(originpath):
                         raise util.Abort(
                             _("patch %s does not exist") % filename)
 
                 if patchname:
                     self.checkpatchname(patchname, force)
 
                     self.ui.write(_('renaming %s to %s\n')
                                         % (filename, patchname))
                     util.rename(originpath, self.join(patchname))
                 else:
                     patchname = filename
 
             else:
                 if filename == '-' and not patchname:
                     raise util.Abort(_('need --name to import a patch from -'))
                 elif not patchname:
                     patchname = normname(os.path.basename(filename.rstrip('/')))
                 self.checkpatchname(patchname, force)
                 try:
                     if filename == '-':
                         text = self.ui.fin.read()
                     else:
                         fp = hg.openpath(self.ui, filename)
                         text = fp.read()
                         fp.close()
                 except (OSError, IOError):
                     raise util.Abort(_("unable to read file %s") % filename)
                 patchf = self.opener(patchname, "w")
                 patchf.write(text)
                 patchf.close()
             if not force:
                 checkseries(patchname)
             if patchname not in self.series:
                 index = self.fullseriesend() + i
                 self.fullseries[index:index] = [patchname]
             self.parseseries()
             self.seriesdirty = True
             self.ui.warn(_("adding %s to series file\n") % patchname)
             self.added.append(patchname)
             imported.append(patchname)
             patchname = None
 
         self.removeundo(repo)
         return imported
 
 def fixkeepchangesopts(ui, opts):
     if (not ui.configbool('mq', 'keepchanges') or opts.get('force')
         or opts.get('exact')):
         return opts
     opts = dict(opts)
     opts['keep_changes'] = True
     return opts
 
 @command("qdelete|qremove|qrm",
          [('k', 'keep', None, _('keep patch file')),
           ('r', 'rev', [],
            _('stop managing a revision (DEPRECATED)'), _('REV'))],
          _('hg qdelete [-k] [PATCH]...'))
 def delete(ui, repo, *patches, **opts):
     """remove patches from queue
 
     The patches must not be applied, and at least one patch is required. Exact
     patch identifiers must be given. With -k/--keep, the patch files are
     preserved in the patch directory.
 
     To stop managing a patch and move it into permanent history,
     use the :hg:`qfinish` command."""
     q = repo.mq
     q.delete(repo, patches, opts)
     q.savedirty()
     return 0
 
 @command("qapplied",
          [('1', 'last', None, _('show only the preceding applied patch'))
           ] + seriesopts,
          _('hg qapplied [-1] [-s] [PATCH]'))
 def applied(ui, repo, patch=None, **opts):
     """print the patches already applied
 
     Returns 0 on success."""
 
     q = repo.mq
 
     if patch:
         if patch not in q.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         end = q.series.index(patch) + 1
     else:
         end = q.seriesend(True)
 
     if opts.get('last') and not end:
         ui.write(_("no patches applied\n"))
         return 1
     elif opts.get('last') and end == 1:
         ui.write(_("only one patch applied\n"))
         return 1
     elif opts.get('last'):
         start = end - 2
         end = 1
     else:
         start = 0
 
     q.qseries(repo, length=end, start=start, status='A',
               summary=opts.get('summary'))
 
 
 @command("qunapplied",
          [('1', 'first', None, _('show only the first patch'))] + seriesopts,
          _('hg qunapplied [-1] [-s] [PATCH]'))
 def unapplied(ui, repo, patch=None, **opts):
     """print the patches not yet applied
 
     Returns 0 on success."""
 
     q = repo.mq
     if patch:
         if patch not in q.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         start = q.series.index(patch) + 1
     else:
         start = q.seriesend(True)
 
     if start == len(q.series) and opts.get('first'):
         ui.write(_("all patches applied\n"))
         return 1
 
     length = opts.get('first') and 1 or None
     q.qseries(repo, start=start, length=length, status='U',
               summary=opts.get('summary'))
 
 @command("qimport",
          [('e', 'existing', None, _('import file in patch directory')),
           ('n', 'name', '',
            _('name of patch file'), _('NAME')),
           ('f', 'force', None, _('overwrite existing files')),
           ('r', 'rev', [],
            _('place existing revisions under mq control'), _('REV')),
           ('g', 'git', None, _('use git extended diff format')),
           ('P', 'push', None, _('qpush after importing'))],
          _('hg qimport [-e] [-n NAME] [-f] [-g] [-P] [-r REV]... [FILE]...'))
 def qimport(ui, repo, *filename, **opts):
     """import a patch or existing changeset
 
     The patch is inserted into the series after the last applied
     patch. If no patches have been applied, qimport prepends the patch
     to the series.
 
     The patch will have the same name as its source file unless you
     give it a new one with -n/--name.
 
     You can register an existing patch inside the patch directory with
     the -e/--existing flag.
 
     With -f/--force, an existing patch of the same name will be
     overwritten.
 
     An existing changeset may be placed under mq control with -r/--rev
     (e.g. qimport --rev . -n patch will place the current revision
     under mq control). With -g/--git, patches imported with --rev will
     use the git diff format. See the diffs help topic for information
     on why this is important for preserving rename/copy information
     and permission changes. Use :hg:`qfinish` to remove changesets
     from mq control.
 
     To import a patch from standard input, pass - as the patch file.
     When importing from standard input, a patch name must be specified
     using the --name flag.
 
     To import an existing patch while renaming it::
 
       hg qimport -e existing-patch -n new-name
 
     Returns 0 if import succeeded.
     """
     lock = repo.lock() # cause this may move phase
     try:
         q = repo.mq
         try:
             imported = q.qimport(
                 repo, filename, patchname=opts.get('name'),
                 existing=opts.get('existing'), force=opts.get('force'),
                 rev=opts.get('rev'), git=opts.get('git'))
         finally:
             q.savedirty()
     finally:
         lock.release()
 
     if imported and opts.get('push') and not opts.get('rev'):
         return q.push(repo, imported[-1])
     return 0
 
 def qinit(ui, repo, create):
     """initialize a new queue repository
 
     This command also creates a series file for ordering patches, and
     an mq-specific .hgignore file in the queue repository, to exclude
     the status and guards files (these contain mostly transient state).
 
     Returns 0 if initialization succeeded."""
     q = repo.mq
     r = q.init(repo, create)
     q.savedirty()
     if r:
         if not os.path.exists(r.wjoin('.hgignore')):
             fp = r.wopener('.hgignore', 'w')
             fp.write('^\\.hg\n')
             fp.write('^\\.mq\n')
             fp.write('syntax: glob\n')
             fp.write('status\n')
             fp.write('guards\n')
             fp.close()
         if not os.path.exists(r.wjoin('series')):
             r.wopener('series', 'w').close()
         r[None].add(['.hgignore', 'series'])
         commands.add(ui, r)
     return 0
 
 @command("^qinit",
          [('c', 'create-repo', None, _('create queue repository'))],
          _('hg qinit [-c]'))
 def init(ui, repo, **opts):
     """init a new queue repository (DEPRECATED)
 
     The queue repository is unversioned by default. If
     -c/--create-repo is specified, qinit will create a separate nested
     repository for patches (qinit -c may also be run later to convert
     an unversioned patch repository into a versioned one). You can use
     qcommit to commit changes to this queue repository.
 
     This command is deprecated. Without -c, it's implied by other relevant
     commands. With -c, use :hg:`init --mq` instead."""
     return qinit(ui, repo, create=opts.get('create_repo'))
 
 @command("qclone",
          [('', '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)')),
           ('p', 'patches', '',
            _('location of source patch repository'), _('REPO')),
          ] + commands.remoteopts,
          _('hg qclone [OPTION]... SOURCE [DEST]'),
          norepo=True)
 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.
 
     The patch directory must be a nested Mercurial repository, as
     would be created by :hg:`init --mq`.
 
     Return 0 on success.
     '''
     def patchdir(repo):
         """compute a patch repo url from a repo object"""
         url = repo.url()
         if url.endswith('/'):
             url = url[:-1]
         return url + '/.hg/patches'
 
     # main repo (destination and sources)
     if dest is None:
         dest = hg.defaultdest(source)
     sr = hg.peer(ui, opts, ui.expandpath(source))
 
     # patches repo (source only)
     if opts.get('patches'):
         patchespath = ui.expandpath(opts.get('patches'))
     else:
         patchespath = patchdir(sr)
     try:
         hg.peer(ui, opts, patchespath)
     except error.RepoError:
         raise util.Abort(_('versioned patch repository not found'
                            ' (see init --mq)'))
     qbase, destrev = None, None
     if sr.local():
         repo = sr.local()
         if repo.mq.applied and repo[qbase].phase() != phases.secret:
             qbase = repo.mq.applied[0].node
             if not hg.islocal(dest):
                 heads = set(repo.heads())
                 destrev = list(heads.difference(repo.heads(qbase)))
                 destrev.append(repo.changelog.parents(qbase)[0])
     elif sr.capable('lookup'):
         try:
             qbase = sr.lookup('qbase')
         except error.RepoError:
             pass
 
     ui.note(_('cloning main repository\n'))
     sr, dr = hg.clone(ui, opts, sr.url(), dest,
                       pull=opts.get('pull'),
                       rev=destrev,
                       update=False,
                       stream=opts.get('uncompressed'))
 
     ui.note(_('cloning patch repository\n'))
     hg.clone(ui, opts, opts.get('patches') or patchdir(sr), patchdir(dr),
              pull=opts.get('pull'), update=not opts.get('noupdate'),
              stream=opts.get('uncompressed'))
 
     if dr.local():
         repo = dr.local()
         if qbase:
             ui.note(_('stripping applied patches from destination '
                       'repository\n'))
             strip(ui, repo, [qbase], update=False, backup=None)
         if not opts.get('noupdate'):
             ui.note(_('updating destination repository\n'))
             hg.update(repo, repo.changelog.tip())
 
 @command("qcommit|qci",
          commands.table["^commit|ci"][1],
          _('hg qcommit [OPTION]... [FILE]...'),
          inferrepo=True)
 def commit(ui, repo, *pats, **opts):
     """commit changes in the queue repository (DEPRECATED)
 
     This command is deprecated; use :hg:`commit --mq` instead."""
     q = repo.mq
     r = q.qrepo()
     if not r:
         raise util.Abort('no queue repository')
     commands.commit(r.ui, r, *pats, **opts)
 
 @command("qseries",
          [('m', 'missing', None, _('print patches not in series')),
          ] + seriesopts,
           _('hg qseries [-ms]'))
 def series(ui, repo, **opts):
     """print the entire series file
 
     Returns 0 on success."""
     repo.mq.qseries(repo, missing=opts.get('missing'),
                     summary=opts.get('summary'))
     return 0
 
 @command("qtop", seriesopts, _('hg qtop [-s]'))
 def top(ui, repo, **opts):
     """print the name of the current patch
 
     Returns 0 on success."""
     q = repo.mq
     t = q.applied and q.seriesend(True) or 0
     if t:
         q.qseries(repo, start=t - 1, length=1, status='A',
                   summary=opts.get('summary'))
     else:
         ui.write(_("no patches applied\n"))
         return 1
 
 @command("qnext", seriesopts, _('hg qnext [-s]'))
 def next(ui, repo, **opts):
     """print the name of the next pushable patch
 
     Returns 0 on success."""
     q = repo.mq
     end = q.seriesend()
     if end == len(q.series):
         ui.write(_("all patches applied\n"))
         return 1
     q.qseries(repo, start=end, length=1, summary=opts.get('summary'))
 
 @command("qprev", seriesopts, _('hg qprev [-s]'))
 def prev(ui, repo, **opts):
     """print the name of the preceding applied patch
 
     Returns 0 on success."""
     q = repo.mq
     l = len(q.applied)
     if l == 1:
         ui.write(_("only one patch applied\n"))
         return 1
     if not l:
         ui.write(_("no patches applied\n"))
         return 1
     idx = q.series.index(q.applied[-2].name)
     q.qseries(repo, start=idx, length=1, status='A',
               summary=opts.get('summary'))
 
 def setupheaderopts(ui, opts):
     if not opts.get('user') and opts.get('currentuser'):
         opts['user'] = ui.username()
     if not opts.get('date') and opts.get('currentdate'):
         opts['date'] = "%d %d" % util.makedate()
 
 @command("^qnew",
          [('e', 'edit', None, _('invoke editor on commit messages')),
           ('f', 'force', None, _('import uncommitted changes (DEPRECATED)')),
           ('g', 'git', None, _('use git extended diff format')),
           ('U', 'currentuser', None, _('add "From: <current user>" to patch')),
           ('u', 'user', '',
            _('add "From: <USER>" to patch'), _('USER')),
           ('D', 'currentdate', None, _('add "Date: <current date>" to patch')),
           ('d', 'date', '',
            _('add "Date: <DATE>" to patch'), _('DATE'))
           ] + commands.walkopts + commands.commitopts,
          _('hg qnew [-e] [-m TEXT] [-l FILE] PATCH [FILE]...'),
          inferrepo=True)
 def new(ui, repo, patch, *args, **opts):
     """create a new patch
 
     qnew creates a new patch on top of the currently-applied patch (if
     any). The patch will be initialized with any outstanding changes
     in the working directory. You may also use -I/--include,
     -X/--exclude, and/or a list of files after the patch name to add
     only changes to matching files to the new patch, leaving the rest
     as uncommitted modifications.
 
     -u/--user and -d/--date can be used to set the (given) user and
     date, respectively. -U/--currentuser and -D/--currentdate set user
     to current user and date to current date.
 
     -e/--edit, -m/--message or -l/--logfile set the patch header as
     well as the commit message. If none is specified, the header is
     empty and the commit message is '[mq]: PATCH'.
 
     Use the -g/--git option to keep the patch in the git extended diff
     format. Read the diffs help topic for more information on why this
     is important for preserving permission changes and copy/rename
     information.
 
     Returns 0 on successful creation of a new patch.
     """
     msg = cmdutil.logmessage(ui, opts)
     q = repo.mq
     opts['msg'] = msg
     setupheaderopts(ui, opts)
     q.new(repo, patch, *args, **opts)
     q.savedirty()
     return 0
 
 @command("^qrefresh",
          [('e', 'edit', None, _('invoke editor on commit messages')),
           ('g', 'git', None, _('use git extended diff format')),
           ('s', 'short', None,
            _('refresh only files already in the patch and specified files')),
           ('U', 'currentuser', None,
            _('add/update author field in patch with current user')),
           ('u', 'user', '',
            _('add/update author field in patch with given user'), _('USER')),
           ('D', 'currentdate', None,
            _('add/update date field in patch with current date')),
           ('d', 'date', '',
            _('add/update date field in patch with given date'), _('DATE'))
           ] + commands.walkopts + commands.commitopts,
          _('hg qrefresh [-I] [-X] [-e] [-m TEXT] [-l FILE] [-s] [FILE]...'),
          inferrepo=True)
 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.
 
     If -s/--short is specified, files currently included in the patch
     will be refreshed just like matched files and remain in the patch.
 
     If -e/--edit is specified, Mercurial will start your configured editor for
     you to enter a message. In case qrefresh fails, you will find a backup of
     your message in ``.hg/last-message.txt``.
 
     hg add/remove/copy/rename work as usual, though you might want to
     use git-style patches (-g/--git or [diff] git=1) to track copies
     and renames. See the diffs help topic for more information on the
     git diff format.
 
     Returns 0 on success.
     """
     q = repo.mq
     message = cmdutil.logmessage(ui, opts)
     setupheaderopts(ui, opts)
     wlock = repo.wlock()
     try:
         ret = q.refresh(repo, pats, msg=message, **opts)
         q.savedirty()
         return ret
     finally:
         wlock.release()
 
 @command("^qdiff",
          commands.diffopts + commands.diffopts2 + commands.walkopts,
          _('hg qdiff [OPTION]... [FILE]...'),
          inferrepo=True)
 def diff(ui, repo, *pats, **opts):
     """diff of the current patch and subsequent modifications
 
     Shows a diff which includes the current patch as well as any
     changes which have been made in the working directory since the
     last refresh (thus showing what the current patch would become
     after a qrefresh).
 
     Use :hg:`diff` if you only want to see the changes made since the
     last qrefresh, or :hg:`export qtip` if you want to see changes
     made by the current patch without including changes made since the
     qrefresh.
 
     Returns 0 on success.
     """
     repo.mq.diff(repo, pats, opts)
     return 0
 
 @command('qfold',
          [('e', 'edit', None, _('invoke editor on commit messages')),
           ('k', 'keep', None, _('keep folded patch files')),
          ] + commands.commitopts,
          _('hg qfold [-e] [-k] [-m TEXT] [-l FILE] PATCH...'))
 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 ``* * *``.
 
     Returns 0 on success."""
     q = repo.mq
     if not files:
         raise util.Abort(_('qfold requires at least one patch name'))
     if not q.checktoppatch(repo)[0]:
         raise util.Abort(_('no patches applied'))
     q.checklocalchanges(repo)
 
     message = cmdutil.logmessage(ui, opts)
 
     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\n') % 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:
             ph = patchheader(q.join(p), q.plainmode)
             if ph.message:
                 messages.append(ph.message)
         pf = q.join(p)
         (patchsuccess, files, fuzz) = q.patch(repo, pf)
         if not patchsuccess:
             raise util.Abort(_('error folding patch %s') % p)
 
     if not message:
         ph = patchheader(q.join(parent), q.plainmode)
         message = ph.message
         for msg in messages:
             if msg:
                 if message:
                     message.append('* * *')
                 message.extend(msg)
         message = '\n'.join(message)
 
     diffopts = q.patchopts(q.diffopts(), *patches)
     wlock = repo.wlock()
     try:
         q.refresh(repo, msg=message, git=diffopts.git, edit=opts.get('edit'),
                   editform='mq.qfold')
         q.delete(repo, patches, opts)
         q.savedirty()
     finally:
         wlock.release()
 
 @command("qgoto",
          [('', 'keep-changes', None,
            _('tolerate non-conflicting local changes')),
           ('f', 'force', None, _('overwrite any local changes')),
           ('', 'no-backup', None, _('do not save backup copies of files'))],
          _('hg qgoto [OPTION]... PATCH'))
 def goto(ui, repo, patch, **opts):
     '''push or pop patches until named patch is at top of stack
 
     Returns 0 on success.'''
     opts = fixkeepchangesopts(ui, opts)
     q = repo.mq
     patch = q.lookup(patch)
     nobackup = opts.get('no_backup')
     keepchanges = opts.get('keep_changes')
     if q.isapplied(patch):
         ret = q.pop(repo, patch, force=opts.get('force'), nobackup=nobackup,
                     keepchanges=keepchanges)
     else:
         ret = q.push(repo, patch, force=opts.get('force'), nobackup=nobackup,
                      keepchanges=keepchanges)
     q.savedirty()
     return ret
 
 @command("qguard",
          [('l', 'list', None, _('list all patches and guards')),
           ('n', 'none', None, _('drop all guards'))],
          _('hg qguard [-l] [-n] [PATCH] [-- [+GUARD]... [-GUARD]...]'))
 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 :hg:`qselect` command has activated it. A patch with
     a negative guard ("-foo") is never pushed if the :hg:`qselect` command
     has activated it.
 
     With no arguments, print the currently active guards.
     With arguments, set guards for the named patch.
 
     .. note::
 
        Specifying negative guards now requires '--'.
 
     To set guards on another patch::
 
       hg qguard other.patch -- +2.6.17 -stable
 
     Returns 0 on success.
     '''
     def status(idx):
         guards = q.seriesguards[idx] or ['unguarded']
         if q.series[idx] in applied:
             state = 'applied'
         elif q.pushable(idx)[0]:
             state = 'unapplied'
         else:
             state = 'guarded'
         label = 'qguard.patch qguard.%s qseries.%s' % (state, state)
         ui.write('%s: ' % ui.label(q.series[idx], label))
 
         for i, guard in enumerate(guards):
             if guard.startswith('+'):
                 ui.write(guard, label='qguard.positive')
             elif guard.startswith('-'):
                 ui.write(guard, label='qguard.negative')
             else:
                 ui.write(guard, label='qguard.unguarded')
             if i != len(guards) - 1:
                 ui.write(' ')
         ui.write('\n')
     q = repo.mq
     applied = set(p.name for p in q.applied)
     patch = None
     args = list(args)
     if opts.get('list'):
         if args or opts.get('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.get('none'):
         idx = q.findseries(patch)
         if idx is None:
             raise util.Abort(_('no patch named %s') % patch)
         q.setguards(idx, args)
         q.savedirty()
     else:
         status(q.series.index(q.lookup(patch)))
 
 @command("qheader", [], _('hg qheader [PATCH]'))
 def header(ui, repo, patch=None):
     """print the header of the topmost or specified patch
 
     Returns 0 on success."""
     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')
     ph = patchheader(q.join(patch), q.plainmode)
 
     ui.write('\n'.join(ph.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 is 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
 
 @command("^qpush",
          [('', 'keep-changes', None,
            _('tolerate non-conflicting local changes')),
           ('f', 'force', None, _('apply on top of local changes')),
           ('e', 'exact', None,
            _('apply the target patch to its recorded parent')),
           ('l', 'list', None, _('list patch name in commit text')),
           ('a', 'all', None, _('apply all patches')),
           ('m', 'merge', None, _('merge from another queue (DEPRECATED)')),
           ('n', 'name', '',
            _('merge queue name (DEPRECATED)'), _('NAME')),
           ('', 'move', None,
            _('reorder patch series and apply only the patch')),
           ('', 'no-backup', None, _('do not save backup copies of files'))],
          _('hg qpush [-f] [-l] [-a] [--move] [PATCH | INDEX]'))
 def push(ui, repo, patch=None, **opts):
     """push the next patch onto the stack
 
     By default, abort if the working directory contains uncommitted
     changes. With --keep-changes, abort only if the uncommitted files
     overlap with patched files. With -f/--force, backup and patch over
     uncommitted changes.
 
     Return 0 on success.
     """
     q = repo.mq
     mergeq = None
 
     opts = fixkeepchangesopts(ui, opts)
     if opts.get('merge'):
         if opts.get('name'):
             newpath = repo.join(opts.get('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.baseui, repo.path, newpath)
         ui.warn(_("merging with queue at: %s\n") % mergeq.path)
     ret = q.push(repo, patch, force=opts.get('force'), list=opts.get('list'),
                  mergeq=mergeq, all=opts.get('all'), move=opts.get('move'),
                  exact=opts.get('exact'), nobackup=opts.get('no_backup'),
                  keepchanges=opts.get('keep_changes'))
     return ret
 
 @command("^qpop",
          [('a', 'all', None, _('pop all patches')),
           ('n', 'name', '',
            _('queue name to pop (DEPRECATED)'), _('NAME')),
           ('', 'keep-changes', None,
            _('tolerate non-conflicting local changes')),
           ('f', 'force', None, _('forget any local changes to patched files')),
           ('', 'no-backup', None, _('do not save backup copies of files'))],
          _('hg qpop [-a] [-f] [PATCH | INDEX]'))
 def pop(ui, repo, patch=None, **opts):
     """pop the current patch off the stack
 
     Without argument, pops off the top of the patch stack. If given a
     patch name, keeps popping off patches until the named patch is at
     the top of the stack.
 
     By default, abort if the working directory contains uncommitted
     changes. With --keep-changes, abort only if the uncommitted files
     overlap with patched files. With -f/--force, backup and discard
     changes made to such files.
 
     Return 0 on success.
     """
     opts = fixkeepchangesopts(ui, opts)
     localupdate = True
     if opts.get('name'):
         q = queue(ui, repo.baseui, repo.path, repo.join(opts.get('name')))
         ui.warn(_('using patch queue: %s\n') % q.path)
         localupdate = False
     else:
         q = repo.mq
     ret = q.pop(repo, patch, force=opts.get('force'), update=localupdate,
                 all=opts.get('all'), nobackup=opts.get('no_backup'),
                 keepchanges=opts.get('keep_changes'))
     q.savedirty()
     return ret
 
 @command("qrename|qmv", [], _('hg qrename PATCH1 [PATCH2]'))
 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.
 
     Returns 0 on success."""
     q = repo.mq
     if not name:
         name = patch
         patch = None
 
     if patch:
         patch = q.lookup(patch)
     else:
         if not q.applied:
             ui.write(_('no patches applied\n'))
             return
         patch = q.lookup('qtip')
     absdest = q.join(name)
     if os.path.isdir(absdest):
         name = normname(os.path.join(name, os.path.basename(patch)))
         absdest = q.join(name)
     q.checkpatchname(name)
 
     ui.note(_('renaming %s to %s\n') % (patch, name))
     i = q.findseries(patch)
     guards = q.guard_re.findall(q.fullseries[i])
     q.fullseries[i] = name + ''.join([' #' + g for g in guards])
     q.parseseries()
     q.seriesdirty = True
 
     info = q.isapplied(patch)
     if info:
         q.applied[info[0]] = statusentry(info[1], name)
     q.applieddirty = True
 
     destdir = os.path.dirname(absdest)
     if not os.path.isdir(destdir):
         os.makedirs(destdir)
     util.rename(q.join(patch), absdest)
     r = q.qrepo()
     if r and patch in r.dirstate:
         wctx = r[None]
         wlock = r.wlock()
         try:
             if r.dirstate[patch] == 'a':
                 r.dirstate.drop(patch)
                 r.dirstate.add(name)
             else:
                 wctx.copy(patch, name)
                 wctx.forget([patch])
         finally:
             wlock.release()
 
     q.savedirty()
 
 @command("qrestore",
          [('d', 'delete', None, _('delete save entry')),
           ('u', 'update', None, _('update queue working directory'))],
          _('hg qrestore [-d] [-u] REV'))
 def restore(ui, repo, rev, **opts):
     """restore the queue state saved by a revision (DEPRECATED)
 
     This command is deprecated, use :hg:`rebase` instead."""
     rev = repo.lookup(rev)
     q = repo.mq
     q.restore(repo, rev, delete=opts.get('delete'),
               qupdate=opts.get('update'))
     q.savedirty()
     return 0
 
 @command("qsave",
          [('c', 'copy', None, _('copy patch directory')),
           ('n', 'name', '',
            _('copy directory name'), _('NAME')),
           ('e', 'empty', None, _('clear queue status file')),
           ('f', 'force', None, _('force copy'))] + commands.commitopts,
          _('hg qsave [-m TEXT] [-l FILE] [-c] [-n NAME] [-e] [-f]'))
 def save(ui, repo, **opts):
     """save current queue state (DEPRECATED)
 
     This command is deprecated, use :hg:`rebase` instead."""
     q = repo.mq
     message = cmdutil.logmessage(ui, opts)
     ret = q.save(repo, msg=message)
     if ret:
         return ret
     q.savedirty() # save to .hg/patches before copying
     if opts.get('copy'):
         path = q.path
         if opts.get('name'):
             newpath = os.path.join(q.basepath, opts.get('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.get('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.get('empty'):
         del q.applied[:]
         q.applieddirty = True
         q.savedirty()
     return 0
 
 
 @command("qselect",
          [('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]...'))
 def select(ui, repo, *args, **opts):
     '''set or print guarded patches to push
 
     Use the :hg:`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.
 
     Returns 0 on success.'''
 
     q = repo.mq
     guards = q.active()
     pushable = lambda i: q.pushable(q.applied[i].name)[0]
     if args or opts.get('none'):
         old_unapplied = q.unapplied(repo)
         old_guarded = [i for i in xrange(len(q.applied)) if not pushable(i)]
         q.setactive(args)
         q.savedirty()
         if not args:
             ui.status(_('guards deactivated\n'))
         if not opts.get('pop') and not opts.get('reapply'):
             unapplied = q.unapplied(repo)
             guarded = [i for i in xrange(len(q.applied)) if not pushable(i)]
             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.get('series'):
         guards = {}
         noguards = 0
         for gs in q.seriesguards:
             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(key=lambda x: x[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.get('reapply') and q.applied and q.applied[-1].name
     popped = False
     if opts.get('pop') or opts.get('reapply'):
         for i in xrange(len(q.applied)):
             if not pushable(i):
                 ui.status(_('popping guarded patches\n'))
                 popped = True
                 if i == 0:
                     q.pop(repo, all=True)
                 else:
                     q.pop(repo, q.applied[i - 1].name)
                 break
     if popped:
         try:
             if reapply:
                 ui.status(_('reapplying unguarded patches\n'))
                 q.push(repo, reapply)
         finally:
             q.savedirty()
 
 @command("qfinish",
          [('a', 'applied', None, _('finish all applied changesets'))],
          _('hg qfinish [-a] [REV]...'))
 def finish(ui, repo, *revrange, **opts):
     """move applied patches into repository history
 
     Finishes the specified revisions (corresponding to applied
     patches) by moving them out of mq control into regular repository
     history.
 
     Accepts a revision range or the -a/--applied option. If --applied
     is specified, all applied mq revisions are removed from mq
     control. Otherwise, the given revisions must be at the base of the
     stack of applied patches.
 
     This can be especially useful if your changes have been applied to
     an upstream repository, or if you are about to push your changes
     to upstream.
 
     Returns 0 on success.
     """
     if not opts.get('applied') and not revrange:
         raise util.Abort(_('no revisions specified'))
     elif opts.get('applied'):
         revrange = ('qbase::qtip',) + revrange
 
     q = repo.mq
     if not q.applied:
         ui.status(_('no patches applied\n'))
         return 0
 
     revs = scmutil.revrange(repo, revrange)
     if repo['.'].rev() in revs and repo[None].files():
         ui.warn(_('warning: uncommitted changes in the working directory\n'))
     # queue.finish may changes phases but leave the responsibility to lock the
     # repo to the caller to avoid deadlock with wlock. This command code is
     # responsibility for this locking.
     lock = repo.lock()
     try:
         q.finish(repo, revs)
         q.savedirty()
     finally:
         lock.release()
     return 0
 
 @command("qqueue",
          [('l', 'list', False, _('list all available queues')),
           ('', 'active', False, _('print name of active queue')),
           ('c', 'create', False, _('create new queue')),
           ('', 'rename', False, _('rename active queue')),
           ('', 'delete', False, _('delete reference to queue')),
           ('', 'purge', False, _('delete queue, and remove patch dir')),
          ],
          _('[OPTION] [QUEUE]'))
 def qqueue(ui, repo, name=None, **opts):
     '''manage multiple patch queues
 
     Supports switching between different patch queues, as well as creating
     new patch queues and deleting existing ones.
 
     Omitting a queue name or specifying -l/--list will show you the registered
     queues - by default the "normal" patches queue is registered. The currently
     active queue will be marked with "(active)". Specifying --active will print
     only the name of the active queue.
 
     To create a new queue, use -c/--create. The queue is automatically made
     active, except in the case where there are applied patches from the
     currently active queue in the repository. Then the queue will only be
     created and switching will fail.
 
     To delete an existing queue, use --delete. You cannot delete the currently
     active queue.
 
     Returns 0 on success.
     '''
     q = repo.mq
     _defaultqueue = 'patches'
     _allqueues = 'patches.queues'
     _activequeue = 'patches.queue'
 
     def _getcurrent():
         cur = os.path.basename(q.path)
         if cur.startswith('patches-'):
             cur = cur[8:]
         return cur
 
     def _noqueues():
         try:
             fh = repo.opener(_allqueues, 'r')
             fh.close()
         except IOError:
             return True
 
         return False
 
     def _getqueues():
         current = _getcurrent()
 
         try:
             fh = repo.opener(_allqueues, 'r')
             queues = [queue.strip() for queue in fh if queue.strip()]
             fh.close()
             if current not in queues:
                 queues.append(current)
         except IOError:
             queues = [_defaultqueue]
 
         return sorted(queues)
 
     def _setactive(name):
         if q.applied:
             raise util.Abort(_('new queue created, but cannot make active '
                                'as patches are applied'))
         _setactivenocheck(name)
 
     def _setactivenocheck(name):
         fh = repo.opener(_activequeue, 'w')
         if name != 'patches':
             fh.write(name)
         fh.close()
 
     def _addqueue(name):
         fh = repo.opener(_allqueues, 'a')
         fh.write('%s\n' % (name,))
         fh.close()
 
     def _queuedir(name):
         if name == 'patches':
             return repo.join('patches')
         else:
             return repo.join('patches-' + name)
 
     def _validname(name):
         for n in name:
             if n in ':\\/.':
                 return False
         return True
 
     def _delete(name):
         if name not in existing:
             raise util.Abort(_('cannot delete queue that does not exist'))
 
         current = _getcurrent()
 
         if name == current:
             raise util.Abort(_('cannot delete currently active queue'))
 
         fh = repo.opener('patches.queues.new', 'w')
         for queue in existing:
             if queue == name:
                 continue
             fh.write('%s\n' % (queue,))
         fh.close()
         util.rename(repo.join('patches.queues.new'), repo.join(_allqueues))
 
     if not name or opts.get('list') or opts.get('active'):
         current = _getcurrent()
         if opts.get('active'):
             ui.write('%s\n' % (current,))
             return
         for queue in _getqueues():
             ui.write('%s' % (queue,))
             if queue == current and not ui.quiet:
                 ui.write(_(' (active)\n'))
             else:
                 ui.write('\n')
         return
 
     if not _validname(name):
         raise util.Abort(
                 _('invalid queue name, may not contain the characters ":\\/."'))
 
     existing = _getqueues()
 
     if opts.get('create'):
         if name in existing:
             raise util.Abort(_('queue "%s" already exists') % name)
         if _noqueues():
             _addqueue(_defaultqueue)
         _addqueue(name)
         _setactive(name)
     elif opts.get('rename'):
         current = _getcurrent()
         if name == current:
             raise util.Abort(_('can\'t rename "%s" to its current name') % name)
         if name in existing:
             raise util.Abort(_('queue "%s" already exists') % name)
 
         olddir = _queuedir(current)
         newdir = _queuedir(name)
 
         if os.path.exists(newdir):
             raise util.Abort(_('non-queue directory "%s" already exists') %
                     newdir)
 
         fh = repo.opener('patches.queues.new', 'w')
         for queue in existing:
             if queue == current:
                 fh.write('%s\n' % (name,))
                 if os.path.exists(olddir):
                     util.rename(olddir, newdir)
             else:
                 fh.write('%s\n' % (queue,))
         fh.close()
         util.rename(repo.join('patches.queues.new'), repo.join(_allqueues))
         _setactivenocheck(name)
     elif opts.get('delete'):
         _delete(name)
     elif opts.get('purge'):
         if name in existing:
             _delete(name)
         qdir = _queuedir(name)
         if os.path.exists(qdir):
             shutil.rmtree(qdir)
     else:
         if name not in existing:
             raise util.Abort(_('use --create to create a new queue'))
         _setactive(name)
 
 def mqphasedefaults(repo, roots):
     """callback used to set mq changeset as secret when no phase data exists"""
     if repo.mq.applied:
         if repo.ui.configbool('mq', 'secret', False):
             mqphase = phases.secret
         else:
             mqphase = phases.draft
         qbase = repo[repo.mq.applied[0].node]
         roots[mqphase].add(qbase.node())
     return roots
 
 def reposetup(ui, repo):
     class mqrepo(repo.__class__):
         @localrepo.unfilteredpropertycache
         def mq(self):
             return queue(self.ui, self.baseui, self.path)
 
         def invalidateall(self):
             super(mqrepo, self).invalidateall()
             if localrepo.hasunfilteredcache(self, 'mq'):
                 # recreate mq in case queue path was changed
                 delattr(self.unfiltered(), 'mq')
 
         def abortifwdirpatched(self, errmsg, force=False):
             if self.mq.applied and self.mq.checkapplied and not force:
                 parents = self.dirstate.parents()
                 patches = [s.node for s in self.mq.applied]
                 if parents[0] in patches or parents[1] in patches:
                     raise util.Abort(errmsg)
 
         def commit(self, text="", user=None, date=None, match=None,
                    force=False, editor=False, extra={}):
             self.abortifwdirpatched(
                 _('cannot commit over an applied mq patch'),
                 force)
 
             return super(mqrepo, self).commit(text, user, date, match, force,
                                               editor, extra)
 
         def checkpush(self, pushop):
             if self.mq.applied and self.mq.checkapplied and not pushop.force:
                 outapplied = [e.node for e in self.mq.applied]
                 if pushop.revs:
                     # Assume applied patches have no non-patch descendants and
                     # are not on remote already. Filtering any changeset not
                     # pushed.
                     heads = set(pushop.revs)
                     for node in reversed(outapplied):
                         if node in heads:
                             break
                         else:
                             outapplied.pop()
                 # looking for pushed and shared changeset
                 for node in outapplied:
                     if self[node].phase() < phases.secret:
                         raise util.Abort(_('source has mq patches applied'))
                 # no non-secret patches pushed
             super(mqrepo, self).checkpush(pushop)
 
         def _findtags(self):
             '''augment tags from base class with patch tags'''
             result = super(mqrepo, self)._findtags()
 
             q = self.mq
             if not q.applied:
                 return result
 
             mqtags = [(patch.node, patch.name) for patch in q.applied]
 
             try:
                 # for now ignore filtering business
                 self.unfiltered().changelog.rev(mqtags[-1][0])
             except error.LookupError:
                 self.ui.warn(_('mq status file refers to unknown node %s\n')
                              % short(mqtags[-1][0]))
                 return result
 
             # do not add fake tags for filtered revisions
             included = self.changelog.hasnode
             mqtags = [mqt for mqt in mqtags if included(mqt[0])]
             if not mqtags:
                 return result
 
             mqtags.append((mqtags[-1][0], 'qtip'))
             mqtags.append((mqtags[0][0], 'qbase'))
             mqtags.append((self.changelog.parents(mqtags[0][0])[0], 'qparent'))
             tags = result[0]
             for patch in mqtags:
                 if patch[1] in tags:
                     self.ui.warn(_('tag %s overrides mq patch of the same '
                                    'name\n') % patch[1])
                 else:
                     tags[patch[1]] = patch[0]
 
             return result
 
     if repo.local():
         repo.__class__ = mqrepo
 
         repo._phasedefaults.append(mqphasedefaults)
 
 def mqimport(orig, ui, repo, *args, **kwargs):
     if (util.safehasattr(repo, 'abortifwdirpatched')
         and not kwargs.get('no_commit', False)):
         repo.abortifwdirpatched(_('cannot import over an applied patch'),
                                    kwargs.get('force'))
     return orig(ui, repo, *args, **kwargs)
 
 def mqinit(orig, ui, *args, **kwargs):
     mq = kwargs.pop('mq', None)
 
     if not mq:
         return orig(ui, *args, **kwargs)
 
     if args:
         repopath = args[0]
         if not hg.islocal(repopath):
             raise util.Abort(_('only a local queue repository '
                                'may be initialized'))
     else:
         repopath = cmdutil.findrepo(os.getcwd())
         if not repopath:
             raise util.Abort(_('there is no Mercurial repository here '
                                '(.hg not found)'))
     repo = hg.repository(ui, repopath)
     return qinit(ui, repo, True)
 
 def mqcommand(orig, ui, repo, *args, **kwargs):
     """Add --mq option to operate on patch repository instead of main"""
 
     # some commands do not like getting unknown options
     mq = kwargs.pop('mq', None)
 
     if not mq:
         return orig(ui, repo, *args, **kwargs)
 
     q = repo.mq
     r = q.qrepo()
     if not r:
         raise util.Abort(_('no queue repository'))
     return orig(r.ui, r, *args, **kwargs)
 
 def summaryhook(ui, repo):
     q = repo.mq
     m = []
     a, u = len(q.applied), len(q.unapplied(repo))
     if a:
         m.append(ui.label(_("%d applied"), 'qseries.applied') % a)
     if u:
         m.append(ui.label(_("%d unapplied"), 'qseries.unapplied') % u)
     if m:
         # i18n: column positioning for "hg summary"
         ui.write(_("mq:     %s\n") % ', '.join(m))
     else:
         # i18n: column positioning for "hg summary"
         ui.note(_("mq:     (empty queue)\n"))
 
 def revsetmq(repo, subset, x):
     """``mq()``
     Changesets managed by MQ.
     """
     revset.getargs(x, 0, 0, _("mq takes no arguments"))
     applied = set([repo[r.node].rev() for r in repo.mq.applied])
     return revset.baseset([r for r in subset if r in applied])
 
 # tell hggettext to extract docstrings from these functions:
 i18nfunctions = [revsetmq]
 
 def extsetup(ui):
     # Ensure mq wrappers are called first, regardless of extension load order by
     # NOT wrapping in uisetup() and instead deferring to init stage two here.
     mqopt = [('', 'mq', None, _("operate on patch repository"))]
 
     extensions.wrapcommand(commands.table, 'import', mqimport)
     cmdutil.summaryhooks.add('mq', summaryhook)
 
     entry = extensions.wrapcommand(commands.table, 'init', mqinit)
     entry[1].extend(mqopt)
 
     nowrap = set(commands.norepo.split(" "))
 
     def dotable(cmdtable):
         for cmd in cmdtable.keys():
             cmd = cmdutil.parsealiases(cmd)[0]
             if cmd in nowrap:
                 continue
             entry = extensions.wrapcommand(cmdtable, cmd, mqcommand)
             entry[1].extend(mqopt)
 
     dotable(commands.table)
 
     for extname, extmodule in extensions.extensions():
         if extmodule.__file__ != __file__:
             dotable(getattr(extmodule, 'cmdtable', {}))
 
     revset.symbols['mq'] = revsetmq
 
 colortable = {'qguard.negative': 'red',
               'qguard.positive': 'yellow',
               'qguard.unguarded': 'green',
               'qseries.applied': 'blue bold underline',
               'qseries.guarded': 'black bold',
               'qseries.missing': 'red bold',
               'qseries.unapplied': 'black bold'}