Teach mq about git patches

hgext/mq.py

@@ -1,1980 +1,1981 b''
 # queue.py - patch queues for mercurial
 #
 # Copyright 2005, 2006 Chris Mason <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 '''patch management and development
 
 This extension lets you work with a stack of patches in a Mercurial
 repository.  It manages two stacks of patches - all known patches, and
 applied patches (subset of known patches).
 
 Known patches are represented as patch files in the .hg/patches
 directory.  Applied patches are both patch files and changesets.
 
 Common tasks (use "hg help command" for more details):
 
 prepare repository to work with patches   qinit
 create new patch                          qnew
 import existing patch                     qimport
 
 print patch series                        qseries
 print applied patches                     qapplied
 print name of top applied patch           qtop
 
 add known patch to applied stack          qpush
 remove patch from applied stack           qpop
 refresh contents of top applied patch     qrefresh
 '''
 
 from mercurial.demandload import *
 from mercurial.i18n import gettext as _
 demandload(globals(), "os sys re struct traceback errno bz2")
 demandload(globals(), "mercurial:cmdutil,commands,hg,patch,revlog,ui,util")
 
 commands.norepo += " qclone qversion"
 
 class statusentry:
     def __init__(self, rev, name=None):
         if not name:
             fields = rev.split(':')
             if len(fields) == 2:
                 self.rev, self.name = fields
             else:
                 self.rev, self.name = None, None
         else:
             self.rev, self.name = rev, name
 
     def __str__(self):
         return self.rev + ':' + self.name
 
 class queue:
     def __init__(self, ui, path, patchdir=None):
         self.basepath = path
         self.path = patchdir or os.path.join(path, "patches")
         self.opener = util.opener(self.path)
         self.ui = ui
         self.applied = []
         self.full_series = []
         self.applied_dirty = 0
         self.series_dirty = 0
         self.series_path = "series"
         self.status_path = "status"
         self.guards_path = "guards"
         self.active_guards = None
         self.guards_dirty = False
         self._diffopts = None
 
         if os.path.exists(self.join(self.series_path)):
             self.full_series = self.opener(self.series_path).read().splitlines()
         self.parse_series()
 
         if os.path.exists(self.join(self.status_path)):
             lines = self.opener(self.status_path).read().splitlines()
             self.applied = [statusentry(l) for l in lines]
 
     def diffopts(self):
         if self._diffopts is None:
             self._diffopts = patch.diffopts(self.ui)
         return self._diffopts
 
     def join(self, *p):
         return os.path.join(self.path, *p)
 
     def find_series(self, patch):
         pre = re.compile("(\s*)([^#]+)")
         index = 0
         for l in self.full_series:
             m = pre.match(l)
             if m:
                 s = m.group(2)
                 s = s.rstrip()
                 if s == patch:
                     return index
             index += 1
         return None
 
     guard_re = re.compile(r'\s?#([-+][^-+# \t\r\n\f][^# \t\r\n\f]*)')
 
     def parse_series(self):
         self.series = []
         self.series_guards = []
         for l in self.full_series:
             h = l.find('#')
             if h == -1:
                 patch = l
                 comment = ''
             elif h == 0:
                 continue
             else:
                 patch = l[:h]
                 comment = l[h:]
             patch = patch.strip()
             if patch:
                 self.series.append(patch)
                 self.series_guards.append(self.guard_re.findall(comment))
 
     def check_guard(self, guard):
         bad_chars = '# \t\r\n\f'
         first = guard[0]
         for c in '-+':
             if first == c:
                 return (_('guard %r starts with invalid character: %r') %
                         (guard, c))
         for c in bad_chars:
             if c in guard:
                 return _('invalid character in guard %r: %r') % (guard, c)
         
     def set_active(self, guards):
         for guard in guards:
             bad = self.check_guard(guard)
             if bad:
                 raise util.Abort(bad)
         guards = dict.fromkeys(guards).keys()
         guards.sort()
         self.ui.debug('active guards: %s\n' % ' '.join(guards))
         self.active_guards = guards
         self.guards_dirty = True
 
     def active(self):
         if self.active_guards is None:
             self.active_guards = []
             try:
                 guards = self.opener(self.guards_path).read().split()
             except IOError, err:
                 if err.errno != errno.ENOENT: raise
                 guards = []
             for i, guard in enumerate(guards):
                 bad = self.check_guard(guard)
                 if bad:
                     self.ui.warn('%s:%d: %s\n' %
                                  (self.join(self.guards_path), i + 1, bad))
                 else:
                     self.active_guards.append(guard)
         return self.active_guards
 
     def set_guards(self, idx, guards):
         for g in guards:
             if len(g) < 2:
                 raise util.Abort(_('guard %r too short') % g)
             if g[0] not in '-+':
                 raise util.Abort(_('guard %r starts with invalid char') % g)
             bad = self.check_guard(g[1:])
             if bad:
                 raise util.Abort(bad)
         drop = self.guard_re.sub('', self.full_series[idx])
         self.full_series[idx] = drop + ''.join([' #' + g for g in guards])
         self.parse_series()
         self.series_dirty = True
         
     def pushable(self, idx):
         if isinstance(idx, str):
             idx = self.series.index(idx)
         patchguards = self.series_guards[idx]
         if not patchguards:
             return True, None
         default = False
         guards = self.active()
         exactneg = [g for g in patchguards if g[0] == '-' and g[1:] in guards]
         if exactneg:
             return False, exactneg[0]
         pos = [g for g in patchguards if g[0] == '+']
         exactpos = [g for g in pos if g[1:] in guards]
         if pos:
             if exactpos:
                 return True, exactpos[0]
             return False, pos
         return True, ''
 
     def explain_pushable(self, idx, all_patches=False):
         write = all_patches and self.ui.write or self.ui.warn
         if all_patches or self.ui.verbose:
             if isinstance(idx, str):
                 idx = self.series.index(idx)
             pushable, why = self.pushable(idx)
             if all_patches and pushable:
                 if why is None:
                     write(_('allowing %s - no guards in effect\n') %
                           self.series[idx])
                 else:
                     if not why:
                         write(_('allowing %s - no matching negative guards\n') %
                               self.series[idx])
                     else:
                         write(_('allowing %s - guarded by %r\n') %
                               (self.series[idx], why))
             if not pushable:
                 if why:
                     write(_('skipping %s - guarded by %r\n') %
                           (self.series[idx], ' '.join(why)))
                 else:
                     write(_('skipping %s - no matching guards\n') %
                           self.series[idx])
 
     def save_dirty(self):
         def write_list(items, path):
             fp = self.opener(path, 'w')
             for i in items:
                 print >> fp, i
             fp.close()
         if self.applied_dirty: write_list(map(str, self.applied), self.status_path)
         if self.series_dirty: write_list(self.full_series, self.series_path)
         if self.guards_dirty: write_list(self.active_guards, self.guards_path)
 
     def readheaders(self, patch):
         def eatdiff(lines):
             while lines:
                 l = lines[-1]
                 if (l.startswith("diff -") or
                     l.startswith("Index:") or
                     l.startswith("===========")):
                     del lines[-1]
                 else:
                     break
         def eatempty(lines):
             while lines:
                 l = lines[-1]
                 if re.match('\s*$', l):
                     del lines[-1]
                 else:
                     break
 
         pf = self.join(patch)
         message = []
         comments = []
         user = None
         date = None
         format = None
         subject = None
         diffstart = 0
 
         for line in file(pf):
             line = line.rstrip()
+            if line.startswith('diff --git'):
+                diffstart = 2
+                break
             if diffstart:
                 if line.startswith('+++ '):
                     diffstart = 2
                 break
             if line.startswith("--- "):
                 diffstart = 1
                 continue
             elif format == "hgpatch":
                 # parse values when importing the result of an hg export
                 if line.startswith("# User "):
                     user = line[7:]
                 elif line.startswith("# Date "):
                     date = line[7:]
                 elif not line.startswith("# ") and line:
                     message.append(line)
                     format = None
             elif line == '# HG changeset patch':
                 format = "hgpatch"
             elif (format != "tagdone" and (line.startswith("Subject: ") or
                                            line.startswith("subject: "))):
                 subject = line[9:]
                 format = "tag"
             elif (format != "tagdone" and (line.startswith("From: ") or
                                            line.startswith("from: "))):
                 user = line[6:]
                 format = "tag"
             elif format == "tag" and line == "":
                 # when looking for tags (subject: from: etc) they
                 # end once you find a blank line in the source
                 format = "tagdone"
             elif message or line:
                 message.append(line)
             comments.append(line)
 
         eatdiff(message)
         eatdiff(comments)
         eatempty(message)
         eatempty(comments)
 
         # make sure message isn't empty
         if format and format.startswith("tag") and subject:
             message.insert(0, "")
             message.insert(0, subject)
         return (message, comments, user, date, diffstart > 1)
 
     def printdiff(self, repo, node1, node2=None, files=None,
                   fp=None, changes=None, opts=None):
         patch.diff(repo, node1, node2, files,
                    fp=fp, changes=changes, opts=self.diffopts())
 
     def mergeone(self, repo, mergeq, head, patch, rev, wlock):
         # first try just applying the patch
         (err, n) = self.apply(repo, [ patch ], update_status=False,
                               strict=True, merge=rev, wlock=wlock)
 
         if err == 0:
             return (err, n)
 
         if n is None:
             raise util.Abort(_("apply failed for patch %s") % patch)
 
         self.ui.warn("patch didn't work out, merging %s\n" % patch)
 
         # apply failed, strip away that rev and merge.
         hg.clean(repo, head, wlock=wlock)
         self.strip(repo, n, update=False, backup='strip', wlock=wlock)
 
         c = repo.changelog.read(rev)
         ret = hg.merge(repo, rev, wlock=wlock)
         if ret:
             raise util.Abort(_("update returned %d") % ret)
         n = repo.commit(None, c[4], c[1], force=1, wlock=wlock)
         if n == None:
             raise util.Abort(_("repo commit failed"))
         try:
             message, comments, user, date, patchfound = mergeq.readheaders(patch)
         except:
             raise util.Abort(_("unable to read %s") % patch)
 
         patchf = self.opener(patch, "w")
         if comments:
             comments = "\n".join(comments) + '\n\n'
             patchf.write(comments)
         self.printdiff(repo, head, n, fp=patchf)
         patchf.close()
         return (0, n)
 
     def qparents(self, repo, rev=None):
         if rev is None:
             (p1, p2) = repo.dirstate.parents()
             if p2 == revlog.nullid:
                 return p1
             if len(self.applied) == 0:
                 return None
             return revlog.bin(self.applied[-1].rev)
         pp = repo.changelog.parents(rev)
         if pp[1] != revlog.nullid:
             arevs = [ x.rev for x in self.applied ]
             p0 = revlog.hex(pp[0])
             p1 = revlog.hex(pp[1])
             if p0 in arevs:
                 return pp[0]
             if p1 in arevs:
                 return pp[1]
         return pp[0]
 
     def mergepatch(self, repo, mergeq, series, wlock):
         if len(self.applied) == 0:
             # each of the patches merged in will have two parents.  This
             # can confuse the qrefresh, qdiff, and strip code because it
             # needs to know which parent is actually in the patch queue.
             # so, we insert a merge marker with only one parent.  This way
             # the first patch in the queue is never a merge patch
             #
             pname = ".hg.patches.merge.marker"
             n = repo.commit(None, '[mq]: merge marker', user=None, force=1,
                             wlock=wlock)
             self.applied.append(statusentry(revlog.hex(n), pname))
             self.applied_dirty = 1
 
         head = self.qparents(repo)
 
         for patch in series:
             patch = mergeq.lookup(patch, strict=True)
             if not patch:
                 self.ui.warn("patch %s does not exist\n" % patch)
                 return (1, None)
             pushable, reason = self.pushable(patch)
             if not pushable:
                 self.explain_pushable(patch, all_patches=True)
                 continue
             info = mergeq.isapplied(patch)
             if not info:
                 self.ui.warn("patch %s is not applied\n" % patch)
                 return (1, None)
             rev = revlog.bin(info[1])
             (err, head) = self.mergeone(repo, mergeq, head, patch, rev, wlock)
             if head:
                 self.applied.append(statusentry(revlog.hex(head), patch))
                 self.applied_dirty = 1
             if err:
                 return (err, head)
         return (0, head)
 
     def patch(self, repo, patchfile):
         '''Apply patchfile  to the working directory.
         patchfile: file name of patch'''
         try:
             (files, fuzz) = patch.patch(patchfile, self.ui, strip=1,
                                         cwd=repo.root)
         except Exception, inst:
             self.ui.note(str(inst) + '\n')
             if not self.ui.verbose:
                 self.ui.warn("patch failed, unable to continue (try -v)\n")
             return (False, [], False)
 
-        return (True, files.keys(), fuzz)
+        return (True, files, fuzz)
 
     def apply(self, repo, series, list=False, update_status=True,
               strict=False, patchdir=None, merge=None, wlock=None):
         # TODO unify with commands.py
         if not patchdir:
             patchdir = self.path
         err = 0
         if not wlock:
             wlock = repo.wlock()
         lock = repo.lock()
         tr = repo.transaction()
         n = None
-        for patch in series:
-            pushable, reason = self.pushable(patch)
+        for patchname in series:
+            pushable, reason = self.pushable(patchname)
             if not pushable:
-                self.explain_pushable(patch, all_patches=True)
+                self.explain_pushable(patchname, all_patches=True)
                 continue
-            self.ui.warn("applying %s\n" % patch)
-            pf = os.path.join(patchdir, patch)
+            self.ui.warn("applying %s\n" % patchname)
+            pf = os.path.join(patchdir, patchname)
 
             try:
-                message, comments, user, date, patchfound = self.readheaders(patch)
+                message, comments, user, date, patchfound = self.readheaders(patchname)
             except:
-                self.ui.warn("Unable to read %s\n" % pf)
+                self.ui.warn("Unable to read %s\n" % patchname)
                 err = 1
                 break
 
             if not message:
-                message = "imported patch %s\n" % patch
+                message = "imported patch %s\n" % patchname
             else:
                 if list:
-                    message.append("\nimported patch %s" % patch)
+                    message.append("\nimported patch %s" % patchname)
                 message = '\n'.join(message)
 
             (patcherr, files, fuzz) = self.patch(repo, pf)
             patcherr = not patcherr
 
-            if merge and len(files) > 0:
+            if merge and files:
                 # Mark as merged and update dirstate parent info
-                repo.dirstate.update(repo.dirstate.filterfiles(files), 'm')
+                repo.dirstate.update(repo.dirstate.filterfiles(files.keys()), 'm')
                 p1, p2 = repo.dirstate.parents()
                 repo.dirstate.setparents(p1, merge)
-            if len(files) > 0:
-                cwd = repo.getcwd()
-                cfiles = files
-                if cwd:
-                    cfiles = [util.pathto(cwd, f) for f in files]
-                cmdutil.addremove(repo, cfiles, wlock=wlock)
+            files = patch.updatedir(self.ui, repo, files, wlock=wlock)
             n = repo.commit(files, message, user, date, force=1, lock=lock,
                             wlock=wlock)
 
             if n == None:
                 raise util.Abort(_("repo commit failed"))
 
             if update_status:
-                self.applied.append(statusentry(revlog.hex(n), patch))
+                self.applied.append(statusentry(revlog.hex(n), patchname))
 
             if patcherr:
                 if not patchfound:
-                    self.ui.warn("patch %s is empty\n" % patch)
+                    self.ui.warn("patch %s is empty\n" % patchname)
                     err = 0
                 else:
                     self.ui.warn("patch failed, rejects left in working dir\n")
                     err = 1
                 break
 
             if fuzz and strict:
                 self.ui.warn("fuzz found when applying patch, stopping\n")
                 err = 1
                 break
         tr.close()
         return (err, n)
 
     def delete(self, repo, patches, keep=False):
         realpatches = []
         for patch in patches:
             patch = self.lookup(patch, strict=True)
             info = self.isapplied(patch)
             if info:
                 raise util.Abort(_("cannot delete applied patch %s") % patch)
             if patch not in self.series:
                 raise util.Abort(_("patch %s not in series file") % patch)
             realpatches.append(patch)
 
         if not keep:
             r = self.qrepo()
             if r:
                 r.remove(realpatches, True)
             else:
                 os.unlink(self.join(patch))
 
         indices = [self.find_series(p) for p in realpatches]
         indices.sort()
         for i in indices[-1::-1]:
             del self.full_series[i]
         self.parse_series()
         self.series_dirty = 1
 
     def check_toppatch(self, repo):
         if len(self.applied) > 0:
             top = revlog.bin(self.applied[-1].rev)
             pp = repo.dirstate.parents()
             if top not in pp:
                 raise util.Abort(_("queue top not at same revision as working directory"))
             return top
         return None
     def check_localchanges(self, repo, force=False, refresh=True):
         m, a, r, d = repo.status()[:4]
         if m or a or r or d:
             if not force:
                 if refresh:
                     raise util.Abort(_("local changes found, refresh first"))
                 else:
                     raise util.Abort(_("local changes found"))
         return m, a, r, d
     def new(self, repo, patch, msg=None, force=None):
         if os.path.exists(self.join(patch)):
             raise util.Abort(_('patch "%s" already exists') % patch)
         m, a, r, d = self.check_localchanges(repo, force)
         commitfiles = m + a + r
         self.check_toppatch(repo)
         wlock = repo.wlock()
         insert = self.full_series_end()
         if msg:
             n = repo.commit(commitfiles, "[mq]: %s" % msg, force=True,
                             wlock=wlock)
         else:
             n = repo.commit(commitfiles,
                             "New patch: %s" % patch, force=True, wlock=wlock)
         if n == None:
             raise util.Abort(_("repo commit failed"))
         self.full_series[insert:insert] = [patch]
         self.applied.append(statusentry(revlog.hex(n), patch))
         self.parse_series()
         self.series_dirty = 1
         self.applied_dirty = 1
         p = self.opener(patch, "w")
         if msg:
             msg = msg + "\n"
             p.write(msg)
         p.close()
         wlock = None
         r = self.qrepo()
         if r: r.add([patch])
         if commitfiles:
             self.refresh(repo, short=True)
 
     def strip(self, repo, rev, update=True, backup="all", wlock=None):
         def limitheads(chlog, stop):
             """return the list of all nodes that have no children"""
             p = {}
             h = []
             stoprev = 0
             if stop in chlog.nodemap:
                 stoprev = chlog.rev(stop)
 
             for r in range(chlog.count() - 1, -1, -1):
                 n = chlog.node(r)
                 if n not in p:
                     h.append(n)
                 if n == stop:
                     break
                 if r < stoprev:
                     break
                 for pn in chlog.parents(n):
                     p[pn] = 1
             return h
 
         def bundle(cg):
             backupdir = repo.join("strip-backup")
             if not os.path.isdir(backupdir):
                 os.mkdir(backupdir)
             name = os.path.join(backupdir, "%s" % revlog.short(rev))
             name = savename(name)
             self.ui.warn("saving bundle to %s\n" % name)
             # TODO, exclusive open
             f = open(name, "wb")
             try:
                 f.write("HG10")
                 z = bz2.BZ2Compressor(9)
                 while 1:
                     chunk = cg.read(4096)
                     if not chunk:
                         break
                     f.write(z.compress(chunk))
                 f.write(z.flush())
             except:
                 os.unlink(name)
                 raise
             f.close()
             return name
 
         def stripall(rev, revnum):
             cl = repo.changelog
             c = cl.read(rev)
             mm = repo.manifest.read(c[0])
             seen = {}
 
             for x in xrange(revnum, cl.count()):
                 c = cl.read(cl.node(x))
                 for f in c[3]:
                     if f in seen:
                         continue
                     seen[f] = 1
                     if f in mm:
                         filerev = mm[f]
                     else:
                         filerev = 0
                     seen[f] = filerev
             # we go in two steps here so the strip loop happens in a
             # sensible order.  When stripping many files, this helps keep
             # our disk access patterns under control.
             seen_list = seen.keys()
             seen_list.sort()
             for f in seen_list:
                 ff = repo.file(f)
                 filerev = seen[f]
                 if filerev != 0:
                     if filerev in ff.nodemap:
                         filerev = ff.rev(filerev)
                     else:
                         filerev = 0
                 ff.strip(filerev, revnum)
 
         if not wlock:
             wlock = repo.wlock()
         lock = repo.lock()
         chlog = repo.changelog
         # TODO delete the undo files, and handle undo of merge sets
         pp = chlog.parents(rev)
         revnum = chlog.rev(rev)
 
         if update:
             self.check_localchanges(repo, refresh=False)
             urev = self.qparents(repo, rev)
             hg.clean(repo, urev, wlock=wlock)
             repo.dirstate.write()
 
         # save is a list of all the branches we are truncating away
         # that we actually want to keep.  changegroup will be used
         # to preserve them and add them back after the truncate
         saveheads = []
         savebases = {}
 
         heads = limitheads(chlog, rev)
         seen = {}
 
         # search through all the heads, finding those where the revision
         # we want to strip away is an ancestor.  Also look for merges
         # that might be turned into new heads by the strip.
         while heads:
             h = heads.pop()
             n = h
             while True:
                 seen[n] = 1
                 pp = chlog.parents(n)
                 if pp[1] != revlog.nullid and chlog.rev(pp[1]) > revnum:
                     if pp[1] not in seen:
                         heads.append(pp[1])
                 if pp[0] == revlog.nullid:
                     break
                 if chlog.rev(pp[0]) < revnum:
                     break
                 n = pp[0]
                 if n == rev:
                     break
             r = chlog.reachable(h, rev)
             if rev not in r:
                 saveheads.append(h)
                 for x in r:
                     if chlog.rev(x) > revnum:
                         savebases[x] = 1
 
         # create a changegroup for all the branches we need to keep
         if backup == "all":
             backupch = repo.changegroupsubset([rev], chlog.heads(), 'strip')
             bundle(backupch)
         if saveheads:
             backupch = repo.changegroupsubset(savebases.keys(), saveheads, 'strip')
             chgrpfile = bundle(backupch)
 
         stripall(rev, revnum)
 
         change = chlog.read(rev)
         repo.manifest.strip(repo.manifest.rev(change[0]), revnum)
         chlog.strip(revnum, revnum)
         if saveheads:
             self.ui.status("adding branch\n")
             commands.unbundle(self.ui, repo, chgrpfile, update=False)
             if backup != "strip":
                 os.unlink(chgrpfile)
 
     def isapplied(self, patch):
         """returns (index, rev, patch)"""
         for i in xrange(len(self.applied)):
             a = self.applied[i]
             if a.name == patch:
                 return (i, a.rev, a.name)
         return None
 
     # if the exact patch name does not exist, we try a few 
     # variations.  If strict is passed, we try only #1
     #
     # 1) a number to indicate an offset in the series file
     # 2) a unique substring of the patch name was given
     # 3) patchname[-+]num to indicate an offset in the series file
     def lookup(self, patch, strict=False):
         patch = patch and str(patch)
 
         def partial_name(s):
             if s in self.series:
                 return s
             matches = [x for x in self.series if s in x]
             if len(matches) > 1:
                 self.ui.warn(_('patch name "%s" is ambiguous:\n') % s)
                 for m in matches:
                     self.ui.warn('  %s\n' % m)
                 return None
             if matches:
                 return matches[0]
             if len(self.series) > 0 and len(self.applied) > 0:
                 if s == 'qtip':
                     return self.series[self.series_end()-1]
                 if s == 'qbase':
                     return self.series[0]
             return None
         if patch == None:
             return None
 
         # we don't want to return a partial match until we make
         # sure the file name passed in does not exist (checked below)
         res = partial_name(patch)
         if res and res == patch:
             return res
 
         if not os.path.isfile(self.join(patch)):
             try:
                 sno = int(patch)
             except(ValueError, OverflowError):
                 pass
             else:
                 if sno < len(self.series):
                     return self.series[sno]
             if not strict:
                 # return any partial match made above
                 if res:
                     return res
                 minus = patch.rsplit('-', 1)
                 if len(minus) > 1:
                     res = partial_name(minus[0])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(minus[1] or 1)
                         except(ValueError, OverflowError):
                             pass
                         else:
                             if i - off >= 0:
                                 return self.series[i - off]
                 plus = patch.rsplit('+', 1)
                 if len(plus) > 1:
                     res = partial_name(plus[0])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(plus[1] or 1)
                         except(ValueError, OverflowError):
                             pass
                         else:
                             if i + off < len(self.series):
                                 return self.series[i + off]
         raise util.Abort(_("patch %s not in series") % patch)
 
     def push(self, repo, patch=None, force=False, list=False,
              mergeq=None, wlock=None):
         if not wlock:
             wlock = repo.wlock()
         patch = self.lookup(patch)
         if patch and self.isapplied(patch):
             self.ui.warn(_("patch %s is already applied\n") % patch)
             sys.exit(1)
         if self.series_end() == len(self.series):
             self.ui.warn(_("patch series fully applied\n"))
             sys.exit(1)
         if not force:
             self.check_localchanges(repo)
 
         self.applied_dirty = 1;
         start = self.series_end()
         if start > 0:
             self.check_toppatch(repo)
         if not patch:
             patch = self.series[start]
             end = start + 1
         else:
             end = self.series.index(patch, start) + 1
         s = self.series[start:end]
         if mergeq:
             ret = self.mergepatch(repo, mergeq, s, wlock)
         else:
             ret = self.apply(repo, s, list, wlock=wlock)
         top = self.applied[-1].name
         if ret[0]:
             self.ui.write("Errors during apply, please fix and refresh %s\n" %
                           top)
         else:
             self.ui.write("Now at: %s\n" % top)
         return ret[0]
 
     def pop(self, repo, patch=None, force=False, update=True, all=False,
             wlock=None):
         def getfile(f, rev):
             t = repo.file(f).read(rev)
             try:
                 repo.wfile(f, "w").write(t)
             except IOError:
                 try:
                     os.makedirs(os.path.dirname(repo.wjoin(f)))
                 except OSError, err:
                     if err.errno != errno.EEXIST: raise
                 repo.wfile(f, "w").write(t)
 
         if not wlock:
             wlock = repo.wlock()
         if patch:
             # index, rev, patch
             info = self.isapplied(patch)
             if not info:
                 patch = self.lookup(patch)
             info = self.isapplied(patch)
             if not info:
                 raise util.Abort(_("patch %s is not applied") % patch)
         if len(self.applied) == 0:
             self.ui.warn(_("no patches applied\n"))
             sys.exit(1)
 
         if not update:
             parents = repo.dirstate.parents()
             rr = [ revlog.bin(x.rev) for x in self.applied ]
             for p in parents:
                 if p in rr:
                     self.ui.warn("qpop: forcing dirstate update\n")
                     update = True
 
         if not force and update:
             self.check_localchanges(repo)
 
         self.applied_dirty = 1;
         end = len(self.applied)
         if not patch:
             if all:
                 popi = 0
             else:
                 popi = len(self.applied) - 1
         else:
             popi = info[0] + 1
             if popi >= end:
                 self.ui.warn("qpop: %s is already at the top\n" % patch)
                 return
         info = [ popi ] + [self.applied[popi].rev, self.applied[popi].name]
 
         start = info[0]
         rev = revlog.bin(info[1])
 
         # we know there are no local changes, so we can make a simplified
         # form of hg.update.
         if update:
             top = self.check_toppatch(repo)
             qp = self.qparents(repo, rev)
             changes = repo.changelog.read(qp)
             mmap = repo.manifest.read(changes[0])
             m, a, r, d, u = repo.status(qp, top)[:5]
             if d:
                 raise util.Abort("deletions found between repo revs")
             for f in m:
                 getfile(f, mmap[f])
             for f in r:
                 getfile(f, mmap[f])
                 util.set_exec(repo.wjoin(f), mmap.execf(f))
             repo.dirstate.update(m + r, 'n')
             for f in a:
                 try: os.unlink(repo.wjoin(f))
                 except: raise
                 try: os.removedirs(os.path.dirname(repo.wjoin(f)))
                 except: pass
             if a:
                 repo.dirstate.forget(a)
             repo.dirstate.setparents(qp, revlog.nullid)
         self.strip(repo, rev, update=False, backup='strip', wlock=wlock)
         del self.applied[start:end]
         if len(self.applied):
             self.ui.write("Now at: %s\n" % self.applied[-1].name)
         else:
             self.ui.write("Patch queue now empty\n")
 
     def diff(self, repo, files):
         top = self.check_toppatch(repo)
         if not top:
             self.ui.write("No patches applied\n")
             return
         qp = self.qparents(repo, top)
         self.printdiff(repo, qp, files=files)
 
     def refresh(self, repo, msg='', short=False):
         if len(self.applied) == 0:
             self.ui.write("No patches applied\n")
             return
         wlock = repo.wlock()
         self.check_toppatch(repo)
         (top, patch) = (self.applied[-1].rev, self.applied[-1].name)
         top = revlog.bin(top)
         cparents = repo.changelog.parents(top)
         patchparent = self.qparents(repo, top)
         message, comments, user, date, patchfound = self.readheaders(patch)
 
         patchf = self.opener(patch, "w")
         msg = msg.rstrip()
         if msg:
             if comments:
                 # Remove existing message.
                 ci = 0
                 for mi in range(len(message)):
                     while message[mi] != comments[ci]:
                         ci += 1
                     del comments[ci]
             comments.append(msg)
         if comments:
             comments = "\n".join(comments) + '\n\n'
             patchf.write(comments)
 
         tip = repo.changelog.tip()
         if top == tip:
             # if the top of our patch queue is also the tip, there is an
             # optimization here.  We update the dirstate in place and strip
             # off the tip commit.  Then just commit the current directory
             # tree.  We can also send repo.commit the list of files
             # changed to speed up the diff
             #
             # in short mode, we only diff the files included in the
             # patch already
             #
             # this should really read:
             #   mm, dd, aa, aa2, uu = repo.status(tip, patchparent)[:5]
             # but we do it backwards to take advantage of manifest/chlog
             # caching against the next repo.status call
             #
             mm, aa, dd, aa2, uu = repo.status(patchparent, tip)[:5]
             if short:
                 filelist = mm + aa + dd
             else:
                 filelist = None
             m, a, r, d, u = repo.status(files=filelist)[:5]
 
             # we might end up with files that were added between tip and
             # the dirstate parent, but then changed in the local dirstate.
             # in this case, we want them to only show up in the added section
             for x in m:
                 if x not in aa:
                     mm.append(x)
             # we might end up with files added by the local dirstate that
             # were deleted by the patch.  In this case, they should only
             # show up in the changed section.
             for x in a:
                 if x in dd:
                     del dd[dd.index(x)]
                     mm.append(x)
                 else:
                     aa.append(x)
             # make sure any files deleted in the local dirstate
             # are not in the add or change column of the patch
             forget = []
             for x in d + r:
                 if x in aa:
                     del aa[aa.index(x)]
                     forget.append(x)
                     continue
                 elif x in mm:
                     del mm[mm.index(x)]
                 dd.append(x)
 
             m = list(util.unique(mm))
             r = list(util.unique(dd))
             a = list(util.unique(aa))
             filelist = list(util.unique(m + r + a))
             self.printdiff(repo, patchparent, files=filelist,
                            changes=(m, a, r, [], u), fp=patchf)
             patchf.close()
 
             changes = repo.changelog.read(tip)
             repo.dirstate.setparents(*cparents)
+            copies = [(f, repo.dirstate.copied(f)) for f in a]
             repo.dirstate.update(a, 'a')
+            for dst, src in copies:
+                repo.dirstate.copy(src, dst)
             repo.dirstate.update(r, 'r')
             repo.dirstate.update(m, 'n')
             repo.dirstate.forget(forget)
 
             if not msg:
                 if not message:
                     message = "patch queue: %s\n" % patch
                 else:
                     message = "\n".join(message)
             else:
                 message = msg
 
             self.strip(repo, top, update=False, backup='strip', wlock=wlock)
             n = repo.commit(filelist, message, changes[1], force=1, wlock=wlock)
             self.applied[-1] = statusentry(revlog.hex(n), patch)
             self.applied_dirty = 1
         else:
             self.printdiff(repo, patchparent, fp=patchf)
             patchf.close()
             self.pop(repo, force=True, wlock=wlock)
             self.push(repo, force=True, wlock=wlock)
 
     def init(self, repo, create=False):
         if os.path.isdir(self.path):
             raise util.Abort(_("patch queue directory already exists"))
         os.mkdir(self.path)
         if create:
             return self.qrepo(create=True)
 
     def unapplied(self, repo, patch=None):
         if patch and patch not in self.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         if not patch:
             start = self.series_end()
         else:
             start = self.series.index(patch) + 1
         unapplied = []
         for i in xrange(start, len(self.series)):
             pushable, reason = self.pushable(i)
             if pushable:
                 unapplied.append((i, self.series[i]))
             self.explain_pushable(i)
         return unapplied
 
     def qseries(self, repo, missing=None, summary=False):
         start = self.series_end(all_patches=True)
         if not missing:
             for i in range(len(self.series)):
                 patch = self.series[i]
                 if self.ui.verbose:
                     if i < start:
                         status = 'A'
                     elif self.pushable(i)[0]:
                         status = 'U'
                     else:
                         status = 'G'
                     self.ui.write('%d %s ' % (i, status))
                 if summary:
                     msg = self.readheaders(patch)[0]
                     msg = msg and ': ' + msg[0] or ': '
                 else:
                     msg = ''
                 self.ui.write('%s%s\n' % (patch, msg))
         else:
             msng_list = []
             for root, dirs, files in os.walk(self.path):
                 d = root[len(self.path) + 1:]
                 for f in files:
                     fl = os.path.join(d, f)
                     if (fl not in self.series and
                         fl not in (self.status_path, self.series_path)
                         and not fl.startswith('.')):
                         msng_list.append(fl)
             msng_list.sort()
             for x in msng_list:
                 if self.ui.verbose:
                     self.ui.write("D ")
                 self.ui.write("%s\n" % x)
 
     def issaveline(self, l):
         if l.name == '.hg.patches.save.line':
             return True
 
     def qrepo(self, create=False):
         if create or os.path.isdir(self.join(".hg")):
             return hg.repository(self.ui, path=self.path, create=create)
 
     def restore(self, repo, rev, delete=None, qupdate=None):
         c = repo.changelog.read(rev)
         desc = c[4].strip()
         lines = desc.splitlines()
         i = 0
         datastart = None
         series = []
         applied = []
         qpp = None
         for i in xrange(0, len(lines)):
             if lines[i] == 'Patch Data:':
                 datastart = i + 1
             elif lines[i].startswith('Dirstate:'):
                 l = lines[i].rstrip()
                 l = l[10:].split(' ')
                 qpp = [ hg.bin(x) for x in l ]
             elif datastart != None:
                 l = lines[i].rstrip()
                 se = statusentry(l)
                 file_ = se.name
                 if se.rev:
                     applied.append(se)
                 series.append(file_)
         if datastart == None:
             self.ui.warn("No saved patch data found\n")
             return 1
         self.ui.warn("restoring status: %s\n" % lines[0])
         self.full_series = series
         self.applied = applied
         self.parse_series()
         self.series_dirty = 1
         self.applied_dirty = 1
         heads = repo.changelog.heads()
         if delete:
             if rev not in heads:
                 self.ui.warn("save entry has children, leaving it alone\n")
             else:
                 self.ui.warn("removing save entry %s\n" % hg.short(rev))
                 pp = repo.dirstate.parents()
                 if rev in pp:
                     update = True
                 else:
                     update = False
                 self.strip(repo, rev, update=update, backup='strip')
         if qpp:
             self.ui.warn("saved queue repository parents: %s %s\n" %
                          (hg.short(qpp[0]), hg.short(qpp[1])))
             if qupdate:
                 print "queue directory updating"
                 r = self.qrepo()
                 if not r:
                     self.ui.warn("Unable to load queue repository\n")
                     return 1
                 hg.clean(r, qpp[0])
 
     def save(self, repo, msg=None):
         if len(self.applied) == 0:
             self.ui.warn("save: no patches applied, exiting\n")
             return 1
         if self.issaveline(self.applied[-1]):
             self.ui.warn("status is already saved\n")
             return 1
 
         ar = [ ':' + x for x in self.full_series ]
         if not msg:
             msg = "hg patches saved state"
         else:
             msg = "hg patches: " + msg.rstrip('\r\n')
         r = self.qrepo()
         if r:
             pp = r.dirstate.parents()
             msg += "\nDirstate: %s %s" % (hg.hex(pp[0]), hg.hex(pp[1]))
         msg += "\n\nPatch Data:\n"
         text = msg + "\n".join([str(x) for x in self.applied]) + '\n' + (ar and
                    "\n".join(ar) + '\n' or "")
         n = repo.commit(None, text, user=None, force=1)
         if not n:
             self.ui.warn("repo commit failed\n")
             return 1
         self.applied.append(statusentry(revlog.hex(n),'.hg.patches.save.line'))
         self.applied_dirty = 1
 
     def full_series_end(self):
         if len(self.applied) > 0:
             p = self.applied[-1].name
             end = self.find_series(p)
             if end == None:
                 return len(self.full_series)
             return end + 1
         return 0
 
     def series_end(self, all_patches=False):
         end = 0
         def next(start):
             if all_patches:
                 return start
             i = start
             while i < len(self.series):
                 p, reason = self.pushable(i)
                 if p:
                     break
                 self.explain_pushable(i)
                 i += 1
             return i
         if len(self.applied) > 0:
             p = self.applied[-1].name
             try:
                 end = self.series.index(p)
             except ValueError:
                 return 0
             return next(end + 1)
         return next(end)
 
     def qapplied(self, repo, patch=None):
         if patch and patch not in self.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         if not patch:
             end = len(self.applied)
         else:
             end = self.series.index(patch) + 1
         for x in xrange(end):
             p = self.appliedname(x)
             self.ui.write("%s\n" % p)
 
     def appliedname(self, index):
         pname = self.applied[index].name
         if not self.ui.verbose:
             p = pname
         else:
             p = str(self.series.index(pname)) + " " + p
         return p
 
     def top(self, repo):
         if len(self.applied):
             p = self.appliedname(-1)
             self.ui.write(p + '\n')
         else:
             self.ui.write("No patches applied\n")
 
     def next(self, repo):
         end = self.series_end()
         if end == len(self.series):
             self.ui.write("All patches applied\n")
         else:
             p = self.series[end]
             if self.ui.verbose:
                 self.ui.write("%d " % self.series.index(p))
             self.ui.write(p + '\n')
 
     def prev(self, repo):
         if len(self.applied) > 1:
             p = self.appliedname(-2)
             self.ui.write(p + '\n')
         elif len(self.applied) == 1:
             self.ui.write("Only one patch applied\n")
         else:
             self.ui.write("No patches applied\n")
 
     def qimport(self, repo, files, patch=None, existing=None, force=None):
         if len(files) > 1 and patch:
             raise util.Abort(_('option "-n" not valid when importing multiple '
                                'files'))
         i = 0
         added = []
         for filename in files:
             if existing:
                 if not patch:
                     patch = filename
                 if not os.path.isfile(self.join(patch)):
                     raise util.Abort(_("patch %s does not exist") % patch)
             else:
                 try:
                     text = file(filename).read()
                 except IOError:
                     raise util.Abort(_("unable to read %s") % patch)
                 if not patch:
                     patch = os.path.split(filename)[1]
                 if not force and os.path.exists(self.join(patch)):
                     raise util.Abort(_('patch "%s" already exists') % patch)
                 patchf = self.opener(patch, "w")
                 patchf.write(text)
             if patch in self.series:
                 raise util.Abort(_('patch %s is already in the series file')
                                  % patch)
             index = self.full_series_end() + i
             self.full_series[index:index] = [patch]
             self.parse_series()
             self.ui.warn("adding %s to series file\n" % patch)
             i += 1
             added.append(patch)
             patch = None
         self.series_dirty = 1
         qrepo = self.qrepo()
         if qrepo:
             qrepo.add(added)
 
 def delete(ui, repo, patch, *patches, **opts):
     """remove patches from queue
 
     The patches must not be applied.
     With -k, the patch files are preserved in the patch directory."""
     q = repo.mq
     q.delete(repo, (patch,) + patches, keep=opts.get('keep'))
     q.save_dirty()
     return 0
 
 def applied(ui, repo, patch=None, **opts):
     """print the patches already applied"""
     repo.mq.qapplied(repo, patch)
     return 0
 
 def unapplied(ui, repo, patch=None, **opts):
     """print the patches not yet applied"""
     for i, p in repo.mq.unapplied(repo, patch):
         if ui.verbose:
             ui.write("%d " % i)
         ui.write("%s\n" % p)
 
 def qimport(ui, repo, *filename, **opts):
     """import a patch"""
     q = repo.mq
     q.qimport(repo, filename, patch=opts['name'],
               existing=opts['existing'], force=opts['force'])
     q.save_dirty()
     return 0
 
 def init(ui, repo, **opts):
     """init a new queue repository
 
     The queue repository is unversioned by default. If -c is
     specified, qinit will create a separate nested repository
     for patches. Use qcommit to commit changes to this queue
     repository."""
     q = repo.mq
     r = q.init(repo, create=opts['create_repo'])
     q.save_dirty()
     if r:
         fp = r.wopener('.hgignore', 'w')
         print >> fp, 'syntax: glob'
         print >> fp, 'status'
         fp.close()
         r.wopener('series', 'w').close()
         r.add(['.hgignore', 'series'])
     return 0
 
 def clone(ui, source, dest=None, **opts):
     '''clone main and patch repository at same time
 
     If source is local, destination will have no patches applied.  If
     source is remote, this command can not check if patches are
     applied in source, so cannot guarantee that patches are not
     applied in destination.  If you clone remote repository, be sure
     before that it has no patches applied.
 
     Source patch repository is looked for in <src>/.hg/patches by
     default.  Use -p <url> to change.
     '''
     commands.setremoteconfig(ui, opts)
     if dest is None:
         dest = hg.defaultdest(source)
     sr = hg.repository(ui, ui.expandpath(source))
     qbase, destrev = None, None
     if sr.local():
         reposetup(ui, sr)
         if sr.mq.applied:
             qbase = revlog.bin(sr.mq.applied[0].rev)
             if not hg.islocal(dest):
                 destrev = sr.parents(qbase)[0]
     ui.note(_('cloning main repo\n'))
     sr, dr = hg.clone(ui, sr, dest,
                       pull=opts['pull'],
                       rev=destrev,
                       update=False,
                       stream=opts['uncompressed'])
     ui.note(_('cloning patch repo\n'))
     spr, dpr = hg.clone(ui, opts['patches'] or (sr.url() + '/.hg/patches'),
                         dr.url() + '/.hg/patches',
                         pull=opts['pull'],
                         update=not opts['noupdate'],
                         stream=opts['uncompressed'])
     if dr.local():
         if qbase:
             ui.note(_('stripping applied patches from destination repo\n'))
             reposetup(ui, dr)
             dr.mq.strip(dr, qbase, update=False, backup=None)
         if not opts['noupdate']:
             ui.note(_('updating destination repo\n'))
             hg.update(dr, dr.changelog.tip())
 
 def commit(ui, repo, *pats, **opts):
     """commit changes in the queue repository"""
     q = repo.mq
     r = q.qrepo()
     if not r: raise util.Abort('no queue repository')
     commands.commit(r.ui, r, *pats, **opts)
 
 def series(ui, repo, **opts):
     """print the entire series file"""
     repo.mq.qseries(repo, missing=opts['missing'], summary=opts['summary'])
     return 0
 
 def top(ui, repo, **opts):
     """print the name of the current patch"""
     repo.mq.top(repo)
     return 0
 
 def next(ui, repo, **opts):
     """print the name of the next patch"""
     repo.mq.next(repo)
     return 0
 
 def prev(ui, repo, **opts):
     """print the name of the previous patch"""
     repo.mq.prev(repo)
     return 0
 
 def new(ui, repo, patch, **opts):
     """create a new patch
 
     qnew creates a new patch on top of the currently-applied patch
     (if any). It will refuse to run if there are any outstanding
     changes unless -f is specified, in which case the patch will
     be initialised with them.
 
     -m or -l set the patch header as well as the commit message.
     If neither is specified, the patch header is empty and the
     commit message is 'New patch: PATCH'"""
     q = repo.mq
     message = commands.logmessage(opts)
     q.new(repo, patch, msg=message, force=opts['force'])
     q.save_dirty()
     return 0
 
 def refresh(ui, repo, **opts):
     """update the current patch"""
     q = repo.mq
     message = commands.logmessage(opts)
     if opts['edit']:
         if message:
             raise util.Abort(_('option "-e" incompatible with "-m" or "-l"'))
         patch = q.applied[-1].name
         (message, comment, user, date, hasdiff) = q.readheaders(patch)
         message = ui.edit('\n'.join(message), user or ui.username())
     q.refresh(repo, msg=message, short=opts['short'])
     q.save_dirty()
     return 0
 
 def diff(ui, repo, *files, **opts):
     """diff of the current patch"""
     # deep in the dirstate code, the walkhelper method wants a list, not a tuple
     repo.mq.diff(repo, list(files))
     return 0
 
 def fold(ui, repo, *files, **opts):
     """fold the named patches into the current patch
 
     Patches must not yet be applied. Each patch will be successively
     applied to the current patch in the order given. If all the
     patches apply successfully, the current patch will be refreshed
     with the new cumulative patch, and the folded patches will
     be deleted. With -k/--keep, the folded patch files will not
     be removed afterwards.
 
     The header for each folded patch will be concatenated with
     the current patch header, separated by a line of '* * *'."""
 
     q = repo.mq
 
     if not files:
         raise util.Abort(_('qfold requires at least one patch name'))
     if not q.check_toppatch(repo):
         raise util.Abort(_('No patches applied\n'))
 
     message = commands.logmessage(opts)
     if opts['edit']:
         if message:
             raise util.Abort(_('option "-e" incompatible with "-m" or "-l"'))
 
     parent = q.lookup('qtip')
     patches = []
     messages = []
     for f in files:
         patch = q.lookup(f)
         if patch in patches or patch == parent:
             ui.warn(_('Skipping already folded patch %s') % patch)
         if q.isapplied(patch):
             raise util.Abort(_('qfold cannot fold already applied patch %s') % patch)
         patches.append(patch)
 
     for patch in patches:
         if not message:
             messages.append(q.readheaders(patch)[0])
         pf = q.join(patch)
         (patchsuccess, files, fuzz) = q.patch(repo, pf)
         if not patchsuccess:
             raise util.Abort(_('Error folding patch %s') % patch)
 
     if not message:
         message, comments, user = q.readheaders(parent)[0:3]
         for msg in messages:
             message.append('* * *')
             message.extend(msg)
         message = '\n'.join(message)
 
     if opts['edit']:
         message = ui.edit(message, user or ui.username())
 
     q.refresh(repo, msg=message)
 
     for patch in patches:
         q.delete(repo, patch, keep=opts['keep'])
 
     q.save_dirty()
 
 def guard(ui, repo, *args, **opts):
     '''set or print guards for a patch
 
     guards control whether a patch can be pushed.  a patch with no
     guards is aways pushed.  a patch with posative guard ("+foo") is
     pushed only if qselect command enables guard "foo".  a patch with
     nagative guard ("-foo") is never pushed if qselect command enables
     guard "foo".
 
     with no arguments, default is to print current active guards.
     with arguments, set active guards for patch.
 
     to set nagative guard "-foo" on topmost patch ("--" is needed so
     hg will not interpret "-foo" as argument):
       hg qguard -- -foo
 
     to set guards on other patch:
       hg qguard other.patch +2.6.17 -stable    
     '''
     def status(idx):
         guards = q.series_guards[idx] or ['unguarded']
         ui.write('%s: %s\n' % (q.series[idx], ' '.join(guards)))
     q = repo.mq
     patch = None
     args = list(args)
     if opts['list']:
         if args or opts['none']:
             raise util.Abort(_('cannot mix -l/--list with options or arguments'))
         for i in xrange(len(q.series)):
             status(i)
         return
     if not args or args[0][0:1] in '-+':
         if not q.applied:
             raise util.Abort(_('no patches applied'))
         patch = q.applied[-1].name
     if patch is None and args[0][0:1] not in '-+':
         patch = args.pop(0)
     if patch is None:
         raise util.Abort(_('no patch to work with'))
     if args or opts['none']:
         q.set_guards(q.find_series(patch), args)
         q.save_dirty()
     else:
         status(q.series.index(q.lookup(patch)))
 
 def header(ui, repo, patch=None):
     """Print the header of the topmost or specified patch"""
     q = repo.mq
 
     if patch:
         patch = q.lookup(patch)
     else:
         if not q.applied:
             ui.write('No patches applied\n')
             return
         patch = q.lookup('qtip')
     message = repo.mq.readheaders(patch)[0]
 
     ui.write('\n'.join(message) + '\n')
 
 def lastsavename(path):
     (directory, base) = os.path.split(path)
     names = os.listdir(directory)
     namere = re.compile("%s.([0-9]+)" % base)
     maxindex = None
     maxname = None
     for f in names:
         m = namere.match(f)
         if m:
             index = int(m.group(1))
             if maxindex == None or index > maxindex:
                 maxindex = index
                 maxname = f
     if maxname:
         return (os.path.join(directory, maxname), maxindex)
     return (None, None)
 
 def savename(path):
     (last, index) = lastsavename(path)
     if last is None:
         index = 0
     newpath = path + ".%d" % (index + 1)
     return newpath
 
 def push(ui, repo, patch=None, **opts):
     """push the next patch onto the stack"""
     q = repo.mq
     mergeq = None
 
     if opts['all']:
         patch = q.series[-1]
     if opts['merge']:
         if opts['name']:
             newpath = opts['name']
         else:
             newpath, i = lastsavename(q.path)
         if not newpath:
             ui.warn("no saved queues found, please use -n\n")
             return 1
         mergeq = queue(ui, repo.join(""), newpath)
         ui.warn("merging with queue at: %s\n" % mergeq.path)
     ret = q.push(repo, patch, force=opts['force'], list=opts['list'],
                  mergeq=mergeq)
     q.save_dirty()
     return ret
 
 def pop(ui, repo, patch=None, **opts):
     """pop the current patch off the stack"""
     localupdate = True
     if opts['name']:
         q = queue(ui, repo.join(""), repo.join(opts['name']))
         ui.warn('using patch queue: %s\n' % q.path)
         localupdate = False
     else:
         q = repo.mq
     q.pop(repo, patch, force=opts['force'], update=localupdate, all=opts['all'])
     q.save_dirty()
     return 0
 
 def rename(ui, repo, patch, name=None, **opts):
     """rename a patch
 
     With one argument, renames the current patch to PATCH1.
     With two arguments, renames PATCH1 to PATCH2."""
 
     q = repo.mq
 
     if not name:
         name = patch
         patch = None
 
     if name in q.series:
         raise util.Abort(_('A patch named %s already exists in the series file') % name)
 
     absdest = q.join(name)
     if os.path.exists(absdest):
         raise util.Abort(_('%s already exists') % absdest)
     
     if patch:
         patch = q.lookup(patch)
     else:
         if not q.applied:
             ui.write(_('No patches applied\n'))
             return
         patch = q.lookup('qtip')
 
     if ui.verbose:
         ui.write('Renaming %s to %s\n' % (patch, name))
     i = q.find_series(patch)
     q.full_series[i] = name
     q.parse_series()
     q.series_dirty = 1
 
     info = q.isapplied(patch)
     if info:
         q.applied[info[0]] = statusentry(info[1], name)
     q.applied_dirty = 1
 
     util.rename(q.join(patch), absdest)
     r = q.qrepo()
     if r:
         wlock = r.wlock()
         if r.dirstate.state(name) == 'r':
             r.undelete([name], wlock)
         r.copy(patch, name, wlock)
         r.remove([patch], False, wlock)
 
     q.save_dirty()
 
 def restore(ui, repo, rev, **opts):
     """restore the queue state saved by a rev"""
     rev = repo.lookup(rev)
     q = repo.mq
     q.restore(repo, rev, delete=opts['delete'],
               qupdate=opts['update'])
     q.save_dirty()
     return 0
 
 def save(ui, repo, **opts):
     """save current queue state"""
     q = repo.mq
     message = commands.logmessage(opts)
     ret = q.save(repo, msg=message)
     if ret:
         return ret
     q.save_dirty()
     if opts['copy']:
         path = q.path
         if opts['name']:
             newpath = os.path.join(q.basepath, opts['name'])
             if os.path.exists(newpath):
                 if not os.path.isdir(newpath):
                     raise util.Abort(_('destination %s exists and is not '
                                        'a directory') % newpath)
                 if not opts['force']:
                     raise util.Abort(_('destination %s exists, '
                                        'use -f to force') % newpath)
         else:
             newpath = savename(path)
         ui.warn("copy %s to %s\n" % (path, newpath))
         util.copyfiles(path, newpath)
     if opts['empty']:
         try:
             os.unlink(q.join(q.status_path))
         except:
             pass
     return 0
 
 def strip(ui, repo, rev, **opts):
     """strip a revision and all later revs on the same branch"""
     rev = repo.lookup(rev)
     backup = 'all'
     if opts['backup']:
         backup = 'strip'
     elif opts['nobackup']:
         backup = 'none'
     repo.mq.strip(repo, rev, backup=backup)
     return 0
 
 def select(ui, repo, *args, **opts):
     '''set or print guarded patches to push
 
     use qguard command to set or print guards on patch.  then use
     qselect to tell mq which guards to use.  example:
 
         qguard foo.patch -stable    (nagative guard)
         qguard bar.patch +stable    (posative guard)
         qselect stable
 
     this sets "stable" guard.  mq will skip foo.patch (because it has
     nagative match) but push bar.patch (because it has posative
     match).  patch is pushed if any posative guards match and no
     nagative guards match.
 
     with no arguments, default is to print current active guards.
     with arguments, set active guards as given.
     
     use -n/--none to deactivate guards (no other arguments needed).
     when no guards active, patches with posative guards are skipped,
     patches with nagative guards are pushed.
 
     qselect can change guards of applied patches. it does not pop
     guarded patches by default.  use --pop to pop back to last applied
     patch that is not guarded.  use --reapply (implies --pop) to push
     back to current patch afterwards, but skip guarded patches.
 
     use -s/--series to print list of all guards in series file (no
     other arguments needed).  use -v for more information.'''
 
     q = repo.mq
     guards = q.active()
     if args or opts['none']:
         old_unapplied = q.unapplied(repo)
         old_guarded = [i for i in xrange(len(q.applied)) if
                        not q.pushable(i)[0]]
         q.set_active(args)
         q.save_dirty()
         if not args:
             ui.status(_('guards deactivated\n'))
         if not opts['pop'] and not opts['reapply']:
             unapplied = q.unapplied(repo)
             guarded = [i for i in xrange(len(q.applied))
                        if not q.pushable(i)[0]]
             if len(unapplied) != len(old_unapplied):
                 ui.status(_('number of unguarded, unapplied patches has '
                             'changed from %d to %d\n') %
                           (len(old_unapplied), len(unapplied)))
             if len(guarded) != len(old_guarded):
                 ui.status(_('number of guarded, applied patches has changed '
                             'from %d to %d\n') %
                           (len(old_guarded), len(guarded)))
     elif opts['series']:
         guards = {}
         noguards = 0
         for gs in q.series_guards:
             if not gs:
                 noguards += 1
             for g in gs:
                 guards.setdefault(g, 0)
                 guards[g] += 1
         if ui.verbose:
             guards['NONE'] = noguards
         guards = guards.items()
         guards.sort(lambda a, b: cmp(a[0][1:], b[0][1:]))
         if guards:
             ui.note(_('guards in series file:\n'))
             for guard, count in guards:
                 ui.note('%2d  ' % count)
                 ui.write(guard, '\n')
         else:
             ui.note(_('no guards in series file\n'))
     else:
         if guards:
             ui.note(_('active guards:\n'))
             for g in guards:
                 ui.write(g, '\n')
         else:
             ui.write(_('no active guards\n'))
     reapply = opts['reapply'] and q.applied and q.appliedname(-1)
     popped = False
     if opts['pop'] or opts['reapply']:
         for i in xrange(len(q.applied)):
             pushable, reason = q.pushable(i)
             if not pushable:
                 ui.status(_('popping guarded patches\n'))
                 popped = True
                 if i == 0:
                     q.pop(repo, all=True)
                 else:
                     q.pop(repo, i-1)
                 break
     if popped:
         try:
             if reapply:
                 ui.status(_('reapplying unguarded patches\n'))
                 q.push(repo, reapply)
         finally:
             q.save_dirty()
 
 def reposetup(ui, repo):
     class mqrepo(repo.__class__):
         def abort_if_wdir_patched(self, errmsg, force=False):
             if self.mq.applied and not force:
                 parent = revlog.hex(self.dirstate.parents()[0])
                 if parent in [s.rev for s in self.mq.applied]:
                     raise util.Abort(errmsg)
             
         def commit(self, *args, **opts):
             if len(args) >= 6:
                 force = args[5]
             else:
                 force = opts.get('force')
             self.abort_if_wdir_patched(
                 _('cannot commit over an applied mq patch'),
                 force)
 
             return super(mqrepo, self).commit(*args, **opts)
 
         def push(self, remote, force=False, revs=None):
             if self.mq.applied and not force:
                 raise util.Abort(_('source has mq patches applied'))
             return super(mqrepo, self).push(remote, force, revs)
             
         def tags(self):
             if self.tagscache:
                 return self.tagscache
 
             tagscache = super(mqrepo, self).tags()
 
             q = self.mq
             if not q.applied:
                 return tagscache
 
             mqtags = [(patch.rev, patch.name) for patch in q.applied]
             mqtags.append((mqtags[-1][0], 'qtip'))
             mqtags.append((mqtags[0][0], 'qbase'))
             for patch in mqtags:
                 if patch[1] in tagscache:
                     self.ui.warn('Tag %s overrides mq patch of the same name\n' % patch[1])
                 else:
                     tagscache[patch[1]] = revlog.bin(patch[0])
 
             return tagscache
 
     if repo.local():
         repo.__class__ = mqrepo
         repo.mq = queue(ui, repo.join(""))
 
 cmdtable = {
     "qapplied": (applied, [], 'hg qapplied [PATCH]'),
     "qclone": (clone,
                [('', 'pull', None, _('use pull protocol to copy metadata')),
                 ('U', 'noupdate', None, _('do not update the new working directories')),
                 ('', 'uncompressed', None,
                  _('use uncompressed transfer (fast over LAN)')),
                 ('e', 'ssh', '', _('specify ssh command to use')),
                 ('p', 'patches', '', _('location of source patch repo')),
                 ('', 'remotecmd', '',
                  _('specify hg command to run on the remote side'))],
                'hg qclone [OPTION]... SOURCE [DEST]'),
     "qcommit|qci":
         (commit,
          commands.table["^commit|ci"][1],
          'hg qcommit [OPTION]... [FILE]...'),
     "^qdiff": (diff, [], 'hg qdiff [FILE]...'),
     "qdelete|qremove|qrm":
         (delete,
          [('k', 'keep', None, _('keep patch file'))],
           'hg qdelete [-k] PATCH'),
     'qfold':
         (fold,
          [('e', 'edit', None, _('edit patch header')),
           ('k', 'keep', None, _('keep folded patch files')),
           ('m', 'message', '', _('set patch header to <text>')),
           ('l', 'logfile', '', _('set patch header to contents of <file>'))],
          'hg qfold [-e] [-m <text>] [-l <file] PATCH...'),
     'qguard': (guard, [('l', 'list', None, _('list all patches and guards')),
                        ('n', 'none', None, _('drop all guards'))],
                'hg qguard [PATCH] [+GUARD...] [-GUARD...]'),
     'qheader': (header, [],
                 _('hg qheader [PATCH]')),
     "^qimport":
         (qimport,
          [('e', 'existing', None, 'import file in patch dir'),
           ('n', 'name', '', 'patch file name'),
           ('f', 'force', None, 'overwrite existing files')],
          'hg qimport [-e] [-n NAME] [-f] FILE...'),
     "^qinit":
         (init,
          [('c', 'create-repo', None, 'create queue repository')],
          'hg qinit [-c]'),
     "qnew":
         (new,
          [('m', 'message', '', _('use <text> as commit message')),
           ('l', 'logfile', '', _('read the commit message from <file>')),
           ('f', 'force', None, _('import uncommitted changes into patch'))],
          'hg qnew [-m TEXT] [-l FILE] [-f] PATCH'),
     "qnext": (next, [], 'hg qnext'),
     "qprev": (prev, [], 'hg qprev'),
     "^qpop":
         (pop,
          [('a', 'all', None, 'pop all patches'),
           ('n', 'name', '', 'queue name to pop'),
           ('f', 'force', None, 'forget any local changes')],
          'hg qpop [-a] [-n NAME] [-f] [PATCH | INDEX]'),
     "^qpush":
         (push,
          [('f', 'force', None, 'apply if the patch has rejects'),
           ('l', 'list', None, 'list patch name in commit text'),
           ('a', 'all', None, 'apply all patches'),
           ('m', 'merge', None, 'merge from another queue'),
           ('n', 'name', '', 'merge queue name')],
          'hg qpush [-f] [-l] [-a] [-m] [-n NAME] [PATCH | INDEX]'),
     "^qrefresh":
         (refresh,
          [('e', 'edit', None, _('edit commit message')),
           ('m', 'message', '', _('change commit message with <text>')),
           ('l', 'logfile', '', _('change commit message with <file> content')),
           ('s', 'short', None, 'short refresh')],
          'hg qrefresh [-e] [-m TEXT] [-l FILE] [-s]'),
     'qrename|qmv':
         (rename, [], 'hg qrename PATCH1 [PATCH2]'),
     "qrestore":
         (restore,
          [('d', 'delete', None, 'delete save entry'),
           ('u', 'update', None, 'update queue working dir')],
          'hg qrestore [-d] [-u] REV'),
     "qsave":
         (save,
          [('m', 'message', '', _('use <text> as commit message')),
           ('l', 'logfile', '', _('read the commit message from <file>')),
           ('c', 'copy', None, 'copy patch directory'),
           ('n', 'name', '', 'copy directory name'),
           ('e', 'empty', None, 'clear queue status file'),
           ('f', 'force', None, 'force copy')],
          'hg qsave [-m TEXT] [-l FILE] [-c] [-n NAME] [-e] [-f]'),
     "qselect": (select,
                 [('n', 'none', None, _('disable all guards')),
                  ('s', 'series', None, _('list all guards in series file')),
                  ('', 'pop', None,
                   _('pop to before first guarded applied patch')),
                  ('', 'reapply', None, _('pop, then reapply patches'))],
                 'hg qselect [OPTION...] [GUARD...]'),
     "qseries":
         (series,
          [('m', 'missing', None, 'print patches not in series'),
           ('s', 'summary', None, _('print first line of patch header'))],
          'hg qseries [-m]'),
     "^strip":
         (strip,
          [('f', 'force', None, 'force multi-head removal'),
           ('b', 'backup', None, 'bundle unrelated changesets'),
           ('n', 'nobackup', None, 'no backups')],
          'hg strip [-f] [-b] [-n] REV'),
     "qtop": (top, [], 'hg qtop'),
     "qunapplied": (unapplied, [], 'hg qunapplied [PATCH]'),
 }

mercurial/patch.py

@@ -1,496 +1,539 b''
 # patch.py - patch file parsing routines
 #
 # Copyright 2006 Brendan Cully <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from demandload import demandload
 from i18n import gettext as _
 from node import *
 demandload(globals(), "cmdutil mdiff util")
 demandload(globals(), "cStringIO email.Parser os re shutil sys tempfile")
 
 # helper functions
 
 def copyfile(src, dst, basedir=None):
     if not basedir:
         basedir = os.getcwd()
 
     abssrc, absdst = [os.path.join(basedir, n) for n in (src, dst)]
     if os.path.exists(absdst):
         raise util.Abort(_("cannot create %s: destination already exists") %
                          dst)
 
     targetdir = os.path.dirname(absdst)
     if not os.path.isdir(targetdir):
         os.makedirs(targetdir)
     try:
         shutil.copyfile(abssrc, absdst)
         shutil.copymode(abssrc, absdst)
     except shutil.Error, inst:
         raise util.Abort(str(inst))
 
 # public functions
 
 def extract(ui, fileobj):
     '''extract patch from data read from fileobj.
 
     patch can be normal patch or contained in email message.
 
     return tuple (filename, message, user, date). any item in returned
     tuple can be None.  if filename is None, fileobj did not contain
     patch. caller must unlink filename when done.'''
 
     # attempt to detect the start of a patch
     # (this heuristic is borrowed from quilt)
     diffre = re.compile(r'^(?:Index:[ \t]|diff[ \t]|RCS file: |' +
                         'retrieving revision [0-9]+(\.[0-9]+)*$|' +
                         '(---|\*\*\*)[ \t])', re.MULTILINE)
 
     fd, tmpname = tempfile.mkstemp(prefix='hg-patch-')
     tmpfp = os.fdopen(fd, 'w')
     try:
         hgpatch = False
 
         msg = email.Parser.Parser().parse(fileobj)
 
         message = msg['Subject']
         user = msg['From']
         # should try to parse msg['Date']
         date = None
 
         if message:
             message = message.replace('\n\t', ' ')
             ui.debug('Subject: %s\n' % message)
         if user:
             ui.debug('From: %s\n' % user)
         diffs_seen = 0
         ok_types = ('text/plain', 'text/x-diff', 'text/x-patch')
 
         for part in msg.walk():
             content_type = part.get_content_type()
             ui.debug('Content-Type: %s\n' % content_type)
             if content_type not in ok_types:
                 continue
             payload = part.get_payload(decode=True)
             m = diffre.search(payload)
             if m:
                 ui.debug(_('found patch at byte %d\n') % m.start(0))
                 diffs_seen += 1
                 cfp = cStringIO.StringIO()
                 if message:
                     cfp.write(message)
                     cfp.write('\n')
                 for line in payload[:m.start(0)].splitlines():
                     if line.startswith('# HG changeset patch'):
                         ui.debug(_('patch generated by hg export\n'))
                         hgpatch = True
                         # drop earlier commit message content
                         cfp.seek(0)
                         cfp.truncate()
                     elif hgpatch:
                         if line.startswith('# User '):
                             user = line[7:]
                             ui.debug('From: %s\n' % user)
                         elif line.startswith("# Date "):
                             date = line[7:]
                     if not line.startswith('# '):
                         cfp.write(line)
                         cfp.write('\n')
                 message = cfp.getvalue()
                 if tmpfp:
                     tmpfp.write(payload)
                     if not payload.endswith('\n'):
                         tmpfp.write('\n')
             elif not diffs_seen and message and content_type == 'text/plain':
                 message += '\n' + payload
     except:
         tmpfp.close()
         os.unlink(tmpname)
         raise
 
     tmpfp.close()
     if not diffs_seen:
         os.unlink(tmpname)
         return None, message, user, date
     return tmpname, message, user, date
 
 def readgitpatch(patchname):
     """extract git-style metadata about patches from <patchname>"""
     class gitpatch:
         "op is one of ADD, DELETE, RENAME, MODIFY or COPY"
         def __init__(self, path):
             self.path = path
             self.oldpath = None
             self.mode = None
             self.op = 'MODIFY'
             self.copymod = False
             self.lineno = 0
     
     # Filter patch for git information
     gitre = re.compile('diff --git a/(.*) b/(.*)')
     pf = file(patchname)
     gp = None
     gitpatches = []
     # Can have a git patch with only metadata, causing patch to complain
     dopatch = False
 
     lineno = 0
     for line in pf:
         lineno += 1
         if line.startswith('diff --git'):
             m = gitre.match(line)
             if m:
                 if gp:
                     gitpatches.append(gp)
                 src, dst = m.group(1,2)
                 gp = gitpatch(dst)
                 gp.lineno = lineno
         elif gp:
             if line.startswith('--- '):
                 if gp.op in ('COPY', 'RENAME'):
                     gp.copymod = True
                     dopatch = 'filter'
                 gitpatches.append(gp)
                 gp = None
                 if not dopatch:
                     dopatch = True
                 continue
             if line.startswith('rename from '):
                 gp.op = 'RENAME'
                 gp.oldpath = line[12:].rstrip()
             elif line.startswith('rename to '):
                 gp.path = line[10:].rstrip()
             elif line.startswith('copy from '):
                 gp.op = 'COPY'
                 gp.oldpath = line[10:].rstrip()
             elif line.startswith('copy to '):
                 gp.path = line[8:].rstrip()
             elif line.startswith('deleted file'):
                 gp.op = 'DELETE'
             elif line.startswith('new file mode '):
                 gp.op = 'ADD'
                 gp.mode = int(line.rstrip()[-3:], 8)
             elif line.startswith('new mode '):
                 gp.mode = int(line.rstrip()[-3:], 8)
     if gp:
         gitpatches.append(gp)
 
     if not gitpatches:
         dopatch = True
 
     return (dopatch, gitpatches)
 
 def dogitpatch(patchname, gitpatches):
     """Preprocess git patch so that vanilla patch can handle it"""
     pf = file(patchname)
     pfline = 1
 
     fd, patchname = tempfile.mkstemp(prefix='hg-patch-')
     tmpfp = os.fdopen(fd, 'w')
 
     try:
         for i in range(len(gitpatches)):
             p = gitpatches[i]
             if not p.copymod:
                 continue
 
             copyfile(p.oldpath, p.path)
 
             # rewrite patch hunk
             while pfline < p.lineno:
                 tmpfp.write(pf.readline())
                 pfline += 1
             tmpfp.write('diff --git a/%s b/%s\n' % (p.path, p.path))
             line = pf.readline()
             pfline += 1
             while not line.startswith('--- a/'):
                 tmpfp.write(line)
                 line = pf.readline()
                 pfline += 1
             tmpfp.write('--- a/%s\n' % p.path)
 
         line = pf.readline()
         while line:
             tmpfp.write(line)
             line = pf.readline()
     except:
         tmpfp.close()
         os.unlink(patchname)
         raise
 
     tmpfp.close()
     return patchname
 
 def patch(patchname, ui, strip=1, cwd=None):
     """apply the patch <patchname> to the working directory.
     a list of patched files is returned"""
 
     (dopatch, gitpatches) = readgitpatch(patchname)
 
     files = {}
     fuzz = False
     if dopatch:
         if dopatch == 'filter':
             patchname = dogitpatch(patchname, gitpatches)
         patcher = util.find_in_path('gpatch', os.environ.get('PATH', ''), 'patch')
         args = []
         if cwd:
             args.append('-d %s' % util.shellquote(cwd))
         fp = os.popen('%s %s -p%d < %s' % (patcher, ' '.join(args), strip,
                                            util.shellquote(patchname)))
 
         if dopatch == 'filter':
             False and os.unlink(patchname)
 
         for line in fp:
             line = line.rstrip()
             ui.note(line + '\n')
             if line.startswith('patching file '):
                 pf = util.parse_patch_output(line)
                 printed_file = False
                 files.setdefault(pf, (None, None))
             elif line.find('with fuzz') >= 0:
                 fuzz = True
                 if not printed_file:
                     ui.warn(pf + '\n')
                     printed_file = True
                 ui.warn(line + '\n')
             elif line.find('saving rejects to file') >= 0:
                 ui.warn(line + '\n')
             elif line.find('FAILED') >= 0:
                 if not printed_file:
                     ui.warn(pf + '\n')
                     printed_file = True
                 ui.warn(line + '\n')
             
         code = fp.close()
         if code:
             raise util.Abort(_("patch command failed: %s") %
                              util.explain_exit(code)[0])
 
     for gp in gitpatches:
         files[gp.path] = (gp.op, gp)
 
     return (files, fuzz)
 
 def diffopts(ui, opts={}):
     return mdiff.diffopts(
         text=opts.get('text'),
         git=(opts.get('git') or
                   ui.configbool('diff', 'git', None)),
         showfunc=(opts.get('show_function') or
                   ui.configbool('diff', 'showfunc', None)),
         ignorews=(opts.get('ignore_all_space') or
                   ui.configbool('diff', 'ignorews', None)),
         ignorewsamount=(opts.get('ignore_space_change') or
                         ui.configbool('diff', 'ignorewsamount', None)),
         ignoreblanklines=(opts.get('ignore_blank_lines') or
                           ui.configbool('diff', 'ignoreblanklines', None)))
 
 def updatedir(ui, repo, patches, wlock=None):
     '''Update dirstate after patch application according to metadata'''
     if not patches:
         return
     copies = []
     removes = []
     cfiles = patches.keys()
     copts = {'after': False, 'force': False}
     cwd = repo.getcwd()
     if cwd:
         cfiles = [util.pathto(cwd, f) for f in patches.keys()]
     for f in patches:
         ctype, gp = patches[f]
         if ctype == 'RENAME':
             copies.append((gp.oldpath, gp.path, gp.copymod))
             removes.append(gp.oldpath)
         elif ctype == 'COPY':
             copies.append((gp.oldpath, gp.path, gp.copymod))
         elif ctype == 'DELETE':
             removes.append(gp.path)
     for src, dst, after in copies:
         if not after:
             copyfile(src, dst, repo.root)
         repo.copy(src, dst, wlock=wlock)
     if removes:
         repo.remove(removes, True, wlock=wlock)
     for f in patches:
         ctype, gp = patches[f]
         if gp and gp.mode:
             x = gp.mode & 0100 != 0
             dst = os.path.join(repo.root, gp.path)
             util.set_exec(dst, x)
     cmdutil.addremove(repo, cfiles, wlock=wlock)
     files = patches.keys()
     files.extend([r for r in removes if r not in files])
     files.sort()
 
     return files
 
 def diff(repo, node1=None, node2=None, files=None, match=util.always,
          fp=None, changes=None, opts=None):
     '''print diff of changes to files between two nodes, or node and
     working directory.
 
     if node1 is None, use first dirstate parent instead.
     if node2 is None, compare node1 with working directory.'''
 
     if opts is None:
         opts = mdiff.defaultopts
     if fp is None:
         fp = repo.ui
 
     if not node1:
         node1 = repo.dirstate.parents()[0]
+
+    clcache = {}
+    def getchangelog(n):
+        if n not in clcache:
+            clcache[n] = repo.changelog.read(n)
+        return clcache[n]
+    mcache = {}
+    def getmanifest(n):
+        if n not in mcache:
+            mcache[n] = repo.manifest.read(n)
+        return mcache[n]
+    fcache = {}
+    def getfile(f):
+        if f not in fcache:
+            fcache[f] = repo.file(f)
+        return fcache[f]
+
     # reading the data for node1 early allows it to play nicely
     # with repo.status and the revlog cache.
-    change = repo.changelog.read(node1)
-    mmap = repo.manifest.read(change[0])
+    change = getchangelog(node1)
+    mmap = getmanifest(change[0])
     date1 = util.datestr(change[2])
 
     if not changes:
         changes = repo.status(node1, node2, files, match=match)[:5]
     modified, added, removed, deleted, unknown = changes
     if files:
         def filterfiles(filters):
             l = [x for x in filters if x in files]
 
             for t in files:
                 if not t.endswith("/"):
                     t += "/"
                 l += [x for x in filters if x.startswith(t)]
             return l
 
         modified, added, removed = map(filterfiles, (modified, added, removed))
 
     if not modified and not added and not removed:
         return
 
+    def renamedbetween(f, n1, n2):
+        r1, r2 = map(repo.changelog.rev, (n1, n2))
+        src = None
+        while r2 > r1:
+            cl = getchangelog(n2)[0]
+            m = getmanifest(cl)
+            try:
+                src = getfile(f).renamed(m[f])
+            except KeyError:
+                return None
+            if src:
+                f = src[0]
+            n2 = repo.changelog.parents(n2)[0]
+            r2 = repo.changelog.rev(n2)
+        return src
+
     if node2:
-        change = repo.changelog.read(node2)
-        mmap2 = repo.manifest.read(change[0])
+        change = getchangelog(node2)
+        mmap2 = getmanifest(change[0])
         _date2 = util.datestr(change[2])
         def date2(f):
             return _date2
         def read(f):
-            return repo.file(f).read(mmap2[f])
+            return getfile(f).read(mmap2[f])
         def renamed(f):
-            src = repo.file(f).renamed(mmap2[f])
-            return src and src[0] or None
+            return renamedbetween(f, node1, node2)
     else:
         tz = util.makedate()[1]
         _date2 = util.datestr()
         def date2(f):
             try:
                 return util.datestr((os.lstat(repo.wjoin(f)).st_mtime, tz))
             except OSError, err:
                 if err.errno != errno.ENOENT: raise
                 return _date2
         def read(f):
             return repo.wread(f)
         def renamed(f):
-            return repo.dirstate.copies.get(f)
+            src = repo.dirstate.copies.get(f)
+            parent = repo.dirstate.parents()[0]
+            if src:
+                f = src[0]
+            of = renamedbetween(f, node1, parent)
+            if of:
+                return of
+            elif src:
+                cl = getchangelog(parent)[0]
+                return (src, getmanifest(cl)[src])
+            else:
+                return None
 
     if repo.ui.quiet:
         r = None
     else:
         hexfunc = repo.ui.verbose and hex or short
         r = [hexfunc(node) for node in [node1, node2] if node]
 
     if opts.git:
         copied = {}
         for f in added:
             src = renamed(f)
             if src:
                 copied[f] = src
-        srcs = [x[1] for x in copied.items()]
+        srcs = [x[1][0] for x in copied.items()]
 
     all = modified + added + removed
     all.sort()
     for f in all:
         to = None
         tn = None
         dodiff = True
         if f in mmap:
-            to = repo.file(f).read(mmap[f])
+            to = getfile(f).read(mmap[f])
         if f not in removed:
             tn = read(f)
         if opts.git:
             def gitmode(x):
                 return x and '100755' or '100644'
             def addmodehdr(header, omode, nmode):
                 if omode != nmode:
                     header.append('old mode %s\n' % omode)
                     header.append('new mode %s\n' % nmode)
 
             a, b = f, f
             header = []
             if f in added:
                 if node2:
                     mode = gitmode(mmap2.execf(f))
                 else:
                     mode = gitmode(util.is_exec(repo.wjoin(f), None))
                 if f in copied:
-                    a = copied[f]
+                    a, arev = copied[f]
                     omode = gitmode(mmap.execf(a))
                     addmodehdr(header, omode, mode)
                     op = a in removed and 'rename' or 'copy'
                     header.append('%s from %s\n' % (op, a))
                     header.append('%s to %s\n' % (op, f))
-                    to = repo.file(a).read(mmap[a])
+                    to = getfile(a).read(arev)
                 else:
                     header.append('new file mode %s\n' % mode)
             elif f in removed:
                 if f in srcs:
                     dodiff = False
                 else:
                     mode = gitmode(mmap.execf(f))
                     header.append('deleted file mode %s\n' % mode)
             else:
                 omode = gitmode(mmap.execf(f))
                 nmode = gitmode(util.is_exec(repo.wjoin(f), mmap.execf(f)))
                 addmodehdr(header, omode, nmode)
             r = None
             if dodiff:
                 header.insert(0, 'diff --git a/%s b/%s\n' % (a, b))
                 fp.write(''.join(header))
         if dodiff:
             fp.write(mdiff.unidiff(to, date1, tn, date2(f), f, r, opts=opts))
 
 def export(repo, revs, template='hg-%h.patch', fp=None, switch_parent=False,
            opts=None):
     '''export changesets as hg patches.'''
 
     total = len(revs)
     revwidth = max(map(len, revs))
 
     def single(node, seqno, fp):
         parents = [p for p in repo.changelog.parents(node) if p != nullid]
         if switch_parent:
             parents.reverse()
         prev = (parents and parents[0]) or nullid
         change = repo.changelog.read(node)
 
         if not fp:
             fp = cmdutil.make_file(repo, template, node, total=total,
                                    seqno=seqno, revwidth=revwidth)
         if fp not in (sys.stdout, repo.ui):
             repo.ui.note("%s\n" % fp.name)
 
         fp.write("# HG changeset patch\n")
         fp.write("# User %s\n" % change[1])
         fp.write("# Date %d %d\n" % change[2])
         fp.write("# Node ID %s\n" % hex(node))
         fp.write("# Parent  %s\n" % hex(prev))
         if len(parents) > 1:
             fp.write("# Parent  %s\n" % hex(parents[1]))
         fp.write(change[4].rstrip())
         fp.write("\n\n")
 
         diff(repo, prev, node, fp=fp, opts=opts)
         if fp not in (sys.stdout, repo.ui):
             fp.close()
 
     for seqno, cset in enumerate(revs):
         single(cset, seqno, fp)

tests/test-mq

@@ -1,128 +1,153 b''
 #!/bin/sh
 
 HGRCPATH=$HGTMP/.hgrc; export HGRCPATH
 echo "[extensions]" >> $HGTMP/.hgrc
 echo "mq=" >> $HGTMP/.hgrc
 
 echo % help
 hg help mq
 
 hg init a
 cd a
 echo a > a
 hg ci -Ama
 
 hg clone . ../k
 
 mkdir b
 echo z > b/z
 hg ci -Ama
 
 echo % qinit
 
 hg qinit
 
 cd ..
 hg init b
 
 echo % -R qinit
 
 hg -R b qinit
 
 hg init c
 
 echo % qinit -c
 
 hg --cwd c qinit -c
 hg -R c/.hg/patches st
 
 echo % qnew implies add
 
 hg -R c qnew test.patch
 hg -R c/.hg/patches st
 
 cd a
 
 echo % qnew -m
 
 hg qnew -m 'foo bar' test.patch
 cat .hg/patches/test.patch
 
 echo % qrefresh
 
 echo a >> a
 hg qrefresh
 sed -e "s/^\(diff -r \)\([a-f0-9]* \)/\1 x/" \
     -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
     -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/" .hg/patches/test.patch
 
 echo % qpop
 
 hg qpop
 
 echo % qpush
 
 hg qpush
 
 cd ..
 
 echo % pop/push outside repo
 
 hg -R a qpop
 hg -R a qpush
 
 cd a
 hg qnew test2.patch
 
 echo % qrefresh in subdir
 
 cd b
 echo a > a
 hg add a
 hg qrefresh
 
 echo % pop/push -a in subdir
 
 hg qpop -a
 hg --traceback qpush -a
 
 echo % qseries
 hg qseries
 
 echo % qapplied
 hg qapplied
 
 echo % qtop
 hg qtop
 
 echo % qprev
 hg qprev
 
 echo % qnext
 hg qnext
 
 echo % pop, qnext, qprev, qapplied
 hg qpop
 hg qnext
 hg qprev
 hg qapplied
 
 echo % commit should fail
 hg commit
 
 echo % push should fail
 hg push ../../k
 
 echo % qunapplied
 hg qunapplied
 
 echo % push should succeed
 hg qpop -a
 hg push ../../k
 
 echo % strip
 cd ../../b
 echo x>x
 hg ci -Ama
 hg strip tip 2>&1 | sed 's/\(saving bundle to \).*/\1/'
 hg unbundle .hg/strip-backup/*
+
+cat >>$HGTMP/.hgrc <<EOF
+[diff]
+git = True
+EOF
+cd ..
+hg init git
+cd git
+hg qinit
+
+hg qnew -m'new file' new
+echo foo > new
+chmod +x new
+hg add new
+hg qrefresh
+sed -e "s/\(\(---\|+++\) [a-zA-Z0-9_/.-]*\).*/\1/" .hg/patches/new
+
+hg qnew -m'copy file' copy
+hg cp new copy
+hg qrefresh
+sed -e "s/\(\(---\|+++\) [a-zA-Z0-9_/.-]*\).*/\1/" .hg/patches/copy
+
+hg qpop
+hg qpush
+hg qdiff

tests/test-mq.out

@@ -1,129 +1,148 b''
 % help
 mq extension - patch management and development
 
 This extension lets you work with a stack of patches in a Mercurial
 repository.  It manages two stacks of patches - all known patches, and
 applied patches (subset of known patches).
 
 Known patches are represented as patch files in the .hg/patches
 directory.  Applied patches are both patch files and changesets.
 
 Common tasks (use "hg help command" for more details):
 
 prepare repository to work with patches   qinit
 create new patch                          qnew
 import existing patch                     qimport
 
 print patch series                        qseries
 print applied patches                     qapplied
 print name of top applied patch           qtop
 
 add known patch to applied stack          qpush
 remove patch from applied stack           qpop
 refresh contents of top applied patch     qrefresh
 
 list of commands (use "hg help -v mq" to show aliases and global options):
 
  qapplied     print the patches already applied
  qclone       clone main and patch repository at same time
  qcommit      commit changes in the queue repository
  qdelete      remove patches from queue
  qdiff        diff of the current patch
  qfold        fold the named patches into the current patch
  qguard       set or print guards for a patch
  qheader      Print the header of the topmost or specified patch
  qimport      import a patch
  qinit        init a new queue repository
  qnew         create a new patch
  qnext        print the name of the next patch
  qpop         pop the current patch off the stack
  qprev        print the name of the previous patch
  qpush        push the next patch onto the stack
  qrefresh     update the current patch
  qrename      rename a patch
  qrestore     restore the queue state saved by a rev
  qsave        save current queue state
  qselect      set or print guarded patches to push
  qseries      print the entire series file
  qtop         print the name of the current patch
  qunapplied   print the patches not yet applied
  strip        strip a revision and all later revs on the same branch
 adding a
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 adding b/z
 % qinit
 % -R qinit
 % qinit -c
 A .hgignore
 A series
 % qnew implies add
 A .hgignore
 A series
 A test.patch
 % qnew -m
 foo bar
 % qrefresh
 foo bar
 
 diff -r  xa
 --- a/a
 +++ b/a
 @@ -1,1 +1,2 @@ a
  a
 +a
 % qpop
 Patch queue now empty
 % qpush
 applying test.patch
 Now at: test.patch
 % pop/push outside repo
 Patch queue now empty
 applying test.patch
 Now at: test.patch
 % qrefresh in subdir
 % pop/push -a in subdir
 Patch queue now empty
 applying test.patch
 applying test2.patch
 Now at: test2.patch
 % qseries
 test.patch
 test2.patch
 % qapplied
 test.patch
 test2.patch
 % qtop
 test2.patch
 % qprev
 test.patch
 % qnext
 All patches applied
 % pop, qnext, qprev, qapplied
 Now at: test.patch
 test2.patch
 Only one patch applied
 test.patch
 % commit should fail
 abort: cannot commit over an applied mq patch
 % push should fail
 pushing to ../../k
 abort: source has mq patches applied
 % qunapplied
 test2.patch
 % push should succeed
 Patch queue now empty
 pushing to ../../k
 searching for changes
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files
 % strip
 adding x
 0 files updated, 0 files merged, 1 files removed, 0 files unresolved
 saving bundle to 
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files
 (run 'hg update' to get a working copy)
+new file
+
+diff --git a/new b/new
+new file mode 100755
+--- /dev/null
++++ b/new
+@@ -0,0 +1,1 @@
++foo
+copy file
+
+diff --git a/new b/copy
+copy from new
+copy to copy
+Now at: new
+applying copy
+Now at: copy
+diff --git a/new b/copy
+copy from new
+copy to copy