Rewrite log command. New version is faster and more featureful.

The original implementation of log walked backwards through history,
which had terrible behaviour.  It took several minutes to view
complete kernel change history on a fast machine, for example.
The rewrite uses a windowed approach to walk hunks of history
forwards, while still giving results in reverse order.  This reduces
run time from five minutes to five seconds on my system.
In addition, the rewrite uses our normal name handling mechanisms, so
you can run a command like "hg log net/ipv4/**.c" and get a useful
answer.  It optimises for three different cases (no arguments, only
files, and anything goes), so it performs well in all circumstances
I've tested.

mercurial/commands.py

@@ -1,1645 +1,1687
 # commands.py - command processing for mercurial
 #
 # Copyright 2005 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from demandload import demandload
 demandload(globals(), "os re sys signal shutil")
 demandload(globals(), "fancyopts ui hg util lock")
 demandload(globals(), "fnmatch hgweb mdiff random signal time traceback")
 demandload(globals(), "errno socket version struct atexit")
 
 class UnknownCommand(Exception):
     """Exception raised if command is not in the command table."""
 
 def filterfiles(filters, files):
     l = [x for x in files if x in filters]
 
     for t in filters:
         if t and t[-1] != "/":
             t += "/"
         l += [x for x in files if x.startswith(t)]
     return l
 
 def relpath(repo, args):
     cwd = repo.getcwd()
     if cwd:
         return [util.normpath(os.path.join(cwd, x)) for x in args]
     return args
 
 def matchpats(repo, cwd, pats = [], opts = {}, head = ''):
     return util.matcher(repo, cwd, pats or ['.'], opts.get('include'),
                         opts.get('exclude'), head)
 
 def makewalk(repo, pats, opts, head = ''):
     cwd = repo.getcwd()
-    files, matchfn = matchpats(repo, cwd, pats, opts, head)
+    files, matchfn, anypats = matchpats(repo, cwd, pats, opts, head)
     exact = dict(zip(files, files))
     def walk():
         for src, fn in repo.walk(files = files, match = matchfn):
             yield src, fn, util.pathto(cwd, fn), fn in exact
     return files, matchfn, walk()
 
 def walk(repo, pats, opts, head = ''):
     files, matchfn, results = makewalk(repo, pats, opts, head)
     for r in results: yield r
 
 revrangesep = ':'
 
 def revrange(ui, repo, revs, revlog=None):
     if revlog is None:
         revlog = repo.changelog
     revcount = revlog.count()
     def fix(val, defval):
         if not val:
             return defval
         try:
             num = int(val)
             if str(num) != val:
                 raise ValueError
             if num < 0:
                 num += revcount
             if not (0 <= num < revcount):
                 raise ValueError
         except ValueError:
             try:
                 num = repo.changelog.rev(repo.lookup(val))
             except KeyError:
                 try:
                     num = revlog.rev(revlog.lookup(val))
                 except KeyError:
                     raise util.Abort('invalid revision identifier %s', val)
         return num
     for spec in revs:
         if spec.find(revrangesep) >= 0:
             start, end = spec.split(revrangesep, 1)
             start = fix(start, 0)
             end = fix(end, revcount - 1)
             if end > start:
                 end += 1
                 step = 1
             else:
                 end -= 1
                 step = -1
             for rev in xrange(start, end, step):
                 yield str(rev)
         else:
-            yield spec
+            yield str(fix(spec, None))
 
 def make_filename(repo, r, pat, node=None,
                   total=None, seqno=None, revwidth=None):
     node_expander = {
         'H': lambda: hg.hex(node),
         'R': lambda: str(r.rev(node)),
         'h': lambda: hg.short(node),
         }
     expander = {
         '%': lambda: '%',
         'b': lambda: os.path.basename(repo.root),
         }
 
     try:
         if node:
             expander.update(node_expander)
         if node and revwidth is not None:
             expander['r'] = lambda: str(r.rev(node)).zfill(revwidth)
         if total is not None:
             expander['N'] = lambda: str(total)
         if seqno is not None:
             expander['n'] = lambda: str(seqno)
         if total is not None and seqno is not None:
             expander['n'] = lambda:str(seqno).zfill(len(str(total)))
 
         newname = []
         patlen = len(pat)
         i = 0
         while i < patlen:
             c = pat[i]
             if c == '%':
                 i += 1
                 c = pat[i]
                 c = expander[c]()
             newname.append(c)
             i += 1
         return ''.join(newname)
     except KeyError, inst:
         raise util.Abort("invalid format spec '%%%s' in output file name",
                     inst.args[0])
 
 def make_file(repo, r, pat, node=None,
               total=None, seqno=None, revwidth=None, mode='wb'):
     if not pat or pat == '-':
         if 'w' in mode: return sys.stdout
         else: return sys.stdin
     if hasattr(pat, 'write') and 'w' in mode:
         return pat
     if hasattr(pat, 'read') and 'r' in mode:
         return pat
     return open(make_filename(repo, r, pat, node, total, seqno, revwidth),
                 mode)
 
 def dodiff(fp, ui, repo, node1, node2, files=None, match=util.always,
            changes=None, text=False):
     def date(c):
         return time.asctime(time.gmtime(float(c[2].split(' ')[0])))
 
     if not changes:
         (c, a, d, u) = repo.changes(node1, node2, files, match = match)
     else:
         (c, a, d, u) = changes
     if files:
         c, a, d = map(lambda x: filterfiles(files, x), (c, a, d))
 
     if not c and not a and not d:
         return
 
     if node2:
         change = repo.changelog.read(node2)
         mmap2 = repo.manifest.read(change[0])
         date2 = date(change)
         def read(f):
             return repo.file(f).read(mmap2[f])
     else:
         date2 = time.asctime()
         if not node1:
             node1 = repo.dirstate.parents()[0]
         def read(f):
             return repo.wfile(f).read()
 
     if ui.quiet:
         r = None
     else:
         hexfunc = ui.verbose and hg.hex or hg.short
         r = [hexfunc(node) for node in [node1, node2] if node]
 
     change = repo.changelog.read(node1)
     mmap = repo.manifest.read(change[0])
     date1 = date(change)
 
     for f in c:
         to = None
         if f in mmap:
             to = repo.file(f).read(mmap[f])
         tn = read(f)
         fp.write(mdiff.unidiff(to, date1, tn, date2, f, r, text=text))
     for f in a:
         to = None
         tn = read(f)
         fp.write(mdiff.unidiff(to, date1, tn, date2, f, r, text=text))
     for f in d:
         to = repo.file(f).read(mmap[f])
         tn = None
         fp.write(mdiff.unidiff(to, date1, tn, date2, f, r, text=text))
 
-def show_changeset(ui, repo, rev=0, changenode=None, filelog=None, brinfo=None):
+def show_changeset(ui, repo, rev=0, changenode=None, brinfo=None):
     """show a single changeset or file revision"""
-    changelog = repo.changelog
-    if filelog:
-        log = filelog
-        filerev = rev
-        node = filenode = filelog.node(filerev)
-        changerev = filelog.linkrev(filenode)
-        changenode = changenode or changelog.node(changerev)
-    else:
-        log = changelog
-        changerev = rev
+    log = repo.changelog
         if changenode is None:
-            changenode = changelog.node(changerev)
-        elif not changerev:
-            rev = changerev = changelog.rev(changenode)
-        node = changenode
+        changenode = log.node(rev)
+    elif not rev:
+        rev = log.rev(changenode)
 
     if ui.quiet:
-        ui.write("%d:%s\n" % (rev, hg.short(node)))
+        ui.write("%d:%s\n" % (rev, hg.short(changenode)))
         return
 
-    changes = changelog.read(changenode)
+    changes = log.read(changenode)
 
     t, tz = changes[2].split(' ')
     # a conversion tool was sticking non-integer offsets into repos
     try:
         tz = int(tz)
     except ValueError:
         tz = 0
     date = time.asctime(time.localtime(float(t))) + " %+05d" % (int(tz)/-36)
 
     parents = [(log.rev(p), ui.verbose and hg.hex(p) or hg.short(p))
-               for p in log.parents(node)
+               for p in log.parents(changenode)
                if ui.debugflag or p != hg.nullid]
     if not ui.debugflag and len(parents) == 1 and parents[0][0] == rev-1:
         parents = []
 
     if ui.verbose:
-        ui.write("changeset:   %d:%s\n" % (changerev, hg.hex(changenode)))
+        ui.write("changeset:   %d:%s\n" % (rev, hg.hex(changenode)))
     else:
-        ui.write("changeset:   %d:%s\n" % (changerev, hg.short(changenode)))
+        ui.write("changeset:   %d:%s\n" % (rev, hg.short(changenode)))
 
     for tag in repo.nodetags(changenode):
         ui.status("tag:         %s\n" % tag)
     for parent in parents:
         ui.write("parent:      %d:%s\n" % parent)
-    if filelog:
-        ui.debug("file rev:    %d:%s\n" % (filerev, hg.hex(filenode)))
 
     if brinfo and changenode in brinfo:
         br = brinfo[changenode]
         ui.write("branch:      %s\n" % " ".join(br))
 
     ui.debug("manifest:    %d:%s\n" % (repo.manifest.rev(changes[0]),
                                       hg.hex(changes[0])))
     ui.status("user:        %s\n" % changes[1])
     ui.status("date:        %s\n" % date)
 
     if ui.debugflag:
-        files = repo.changes(changelog.parents(changenode)[0], changenode)
+        files = repo.changes(log.parents(changenode)[0], changenode)
         for key, value in zip(["files:", "files+:", "files-:"], files):
             if value:
                 ui.note("%-12s %s\n" % (key, " ".join(value)))
     else:
         ui.note("files:       %s\n" % " ".join(changes[3]))
 
     description = changes[4].strip()
     if description:
         if ui.verbose:
             ui.status("description:\n")
             ui.status(description)
             ui.status("\n\n")
         else:
             ui.status("summary:     %s\n" % description.splitlines()[0])
     ui.status("\n")
 
 def show_version(ui):
     """output version and copyright information"""
     ui.write("Mercurial Distributed SCM (version %s)\n"
              % version.get_version())
     ui.status(
         "\nCopyright (C) 2005 Matt Mackall <[e-mail]>\n"
         "This is free software; see the source for copying conditions. "
         "There is NO\nwarranty; "
         "not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"
     )
 
 def help_(ui, cmd=None):
     """show help for a given command or all commands"""
     if cmd and cmd != 'shortlist':
         key, i = find(cmd)
         # synopsis
         ui.write("%s\n\n" % i[2])
 
         # description
         doc = i[0].__doc__
         if ui.quiet:
             doc = doc.splitlines(0)[0]
         ui.write("%s\n" % doc.rstrip())
 
         # aliases
         if not ui.quiet:
             aliases = ', '.join(key.split('|')[1:])
             if aliases:
                 ui.write("\naliases: %s\n" % aliases)
 
         # options
         if not ui.quiet and i[1]:
             ui.write("\noptions:\n\n")
             for s, l, d, c in i[1]:
                 opt = ' '
                 if s:
                     opt = opt + '-' + s + ' '
                 if l:
                     opt = opt + '--' + l + ' '
                 if d:
                     opt = opt + '(' + str(d) + ')'
                 ui.write(opt, "\n")
                 if c:
                     ui.write('   %s\n' % c)
 
     else:
         # program name
         if ui.verbose:
             show_version(ui)
         else:
             ui.status("Mercurial Distributed SCM\n")
         ui.status('\n')
 
         # list of commands
         if cmd == "shortlist":
             ui.status('basic commands (use "hg help" '
                       'for the full list or option "-v" for details):\n\n')
         elif ui.verbose:
             ui.status('list of commands:\n\n')
         else:
             ui.status('list of commands (use "hg help -v" '
                       'to show aliases and global options):\n\n')
 
         h = {}
         cmds = {}
         for c, e in table.items():
             f = c.split("|")[0]
             if cmd == "shortlist" and not f.startswith("^"):
                 continue
             f = f.lstrip("^")
             if not ui.debugflag and f.startswith("debug"):
                 continue
             d = ""
             if e[0].__doc__:
                 d = e[0].__doc__.splitlines(0)[0].rstrip()
             h[f] = d
             cmds[f]=c.lstrip("^")
 
         fns = h.keys()
         fns.sort()
         m = max(map(len, fns))
         for f in fns:
             if ui.verbose:
                 commands = cmds[f].replace("|",", ")
                 ui.write(" %s:\n      %s\n"%(commands,h[f]))
             else:
                 ui.write(' %-*s   %s\n' % (m, f, h[f]))
 
     # global options
     if ui.verbose:
         ui.write("\nglobal options:\n\n")
         for s, l, d, c in globalopts:
             opt = ' '
             if s:
                 opt = opt + '-' + s + ' '
             if l:
                 opt = opt + '--' + l + ' '
             if d:
                 opt = opt + '(' + str(d) + ')'
             ui.write(opt, "\n")
             if c:
                 ui.write('    %s\n' % c)
 
 # Commands start here, listed alphabetically
 
 def add(ui, repo, *pats, **opts):
     '''add the specified files on the next commit'''
     names = []
     for src, abs, rel, exact in walk(repo, pats, opts):
         if exact:
             names.append(abs)
         elif repo.dirstate.state(abs) == '?':
             ui.status('adding %s\n' % rel)
             names.append(abs)
     repo.add(names)
 
 def addremove(ui, repo, *pats, **opts):
     """add all new files, delete all missing files"""
     add, remove = [], []
     for src, abs, rel, exact in walk(repo, pats, opts):
         if src == 'f' and repo.dirstate.state(abs) == '?':
             add.append(abs)
             if not exact: ui.status('adding ', rel, '\n')
         if repo.dirstate.state(abs) != 'r' and not os.path.exists(rel):
             remove.append(abs)
             if not exact: ui.status('removing ', rel, '\n')
     repo.add(add)
     repo.remove(remove)
 
 def annotate(ui, repo, *pats, **opts):
     """show changeset information per file line"""
     def getnode(rev):
         return hg.short(repo.changelog.node(rev))
 
     def getname(rev):
         try:
             return bcache[rev]
         except KeyError:
             cl = repo.changelog.read(repo.changelog.node(rev))
             name = cl[1]
             f = name.find('@')
             if f >= 0:
                 name = name[:f]
             f = name.find('<')
             if f >= 0:
                 name = name[f+1:]
             bcache[rev] = name
             return name
 
     if not pats:
         raise util.Abort('at least one file name or pattern required')
 
     bcache = {}
     opmap = [['user', getname], ['number', str], ['changeset', getnode]]
     if not opts['user'] and not opts['changeset']:
         opts['number'] = 1
 
     if opts['rev']:
         node = repo.changelog.lookup(opts['rev'])
     else:
         node = repo.dirstate.parents()[0]
     change = repo.changelog.read(node)
     mmap = repo.manifest.read(change[0])
 
     for src, abs, rel, exact in walk(repo, pats, opts):
         if abs not in mmap:
             ui.warn("warning: %s is not in the repository!\n" % rel)
             continue
 
         f = repo.file(abs)
         if not opts['text'] and util.binary(f.read(mmap[abs])):
             ui.write("%s: binary file\n" % rel)
             continue
 
         lines = f.annotate(mmap[abs])
         pieces = []
 
         for o, f in opmap:
             if opts[o]:
                 l = [f(n) for n, dummy in lines]
                 if l:
                     m = max(map(len, l))
                     pieces.append(["%*s" % (m, x) for x in l])
 
         if pieces:
             for p, l in zip(zip(*pieces), lines):
                 ui.write("%s: %s" % (" ".join(p), l[1]))
 
 def cat(ui, repo, file1, rev=None, **opts):
     """output the latest or given revision of a file"""
     r = repo.file(relpath(repo, [file1])[0])
     if rev:
         try:
             # assume all revision numbers are for changesets
             n = repo.lookup(rev)
             change = repo.changelog.read(n)
             m = repo.manifest.read(change[0])
             n = m[relpath(repo, [file1])[0]]
         except hg.RepoError, KeyError:
             n = r.lookup(rev)
     else:
         n = r.tip()
     fp = make_file(repo, r, opts['output'], node=n)
     fp.write(r.read(n))
 
 def clone(ui, source, dest=None, **opts):
     """make a copy of an existing repository"""
     if dest is None:
         dest = os.path.basename(os.path.normpath(source))
 
     if os.path.exists(dest):
         ui.warn("abort: destination '%s' already exists\n" % dest)
         return 1
 
     dest = os.path.realpath(dest)
 
     class Dircleanup:
         def __init__(self, dir_):
             self.rmtree = shutil.rmtree
             self.dir_ = dir_
             os.mkdir(dir_)
         def close(self):
             self.dir_ = None
         def __del__(self):
             if self.dir_:
                 self.rmtree(self.dir_, True)
 
     if opts['ssh']:
         ui.setconfig("ui", "ssh", opts['ssh'])
     if opts['remotecmd']:
         ui.setconfig("ui", "remotecmd", opts['remotecmd'])
 
     d = Dircleanup(dest)
     source = ui.expandpath(source)
     abspath = source
     other = hg.repository(ui, source)
 
     if other.dev() != -1:
         abspath = os.path.abspath(source)
         copyfile = (os.stat(dest).st_dev == other.dev()
                     and getattr(os, 'link', None) or shutil.copy2)
         if copyfile is not shutil.copy2:
             ui.note("cloning by hardlink\n")
         # we use a lock here because because we're not nicely ordered
         l = lock.lock(os.path.join(source, ".hg", "lock"))
 
         util.copytree(os.path.join(source, ".hg"), os.path.join(dest, ".hg"),
                       copyfile)
         try:
             os.unlink(os.path.join(dest, ".hg", "dirstate"))
         except OSError:
             pass
 
         repo = hg.repository(ui, dest)
 
     else:
         repo = hg.repository(ui, dest, create=1)
         repo.pull(other)
 
     f = repo.opener("hgrc", "w")
     f.write("[paths]\n")
     f.write("default = %s\n" % abspath)
 
     if not opts['noupdate']:
         update(ui, repo)
 
     d.close()
 
 def commit(ui, repo, *pats, **opts):
     """commit the specified files or all outstanding changes"""
     if opts['text']:
         ui.warn("Warning: -t and --text is deprecated,"
                 " please use -m or --message instead.\n")
     message = opts['message'] or opts['text']
     logfile = opts['logfile']
     if not message and logfile:
         try:
             if logfile == '-':
                 message = sys.stdin.read()
             else:
                 message = open(logfile).read()
         except IOError, why:
             ui.warn("Can't read commit message %s: %s\n" % (logfile, why))
 
     if opts['addremove']:
         addremove(ui, repo, *pats, **opts)
     cwd = repo.getcwd()
     if not pats and cwd:
         opts['include'] = [os.path.join(cwd, i) for i in opts['include']]
         opts['exclude'] = [os.path.join(cwd, x) for x in opts['exclude']]
-    fns, match = matchpats(repo, (pats and repo.getcwd()) or '', pats, opts)
+    fns, match, anypats = matchpats(repo, (pats and repo.getcwd()) or '',
+                                    pats, opts)
     if pats:
         c, a, d, u = repo.changes(files = fns, match = match)
         files = c + a + [fn for fn in d if repo.dirstate.state(fn) == 'r']
     else:
         files = []
     repo.commit(files, message, opts['user'], opts['date'], match)
 
 def copy(ui, repo, source, dest):
     """mark a file as copied or renamed for the next commit"""
     return repo.copy(*relpath(repo, (source, dest)))
 
 def debugcheckstate(ui, repo):
     """validate the correctness of the current dirstate"""
     parent1, parent2 = repo.dirstate.parents()
     repo.dirstate.read()
     dc = repo.dirstate.map
     keys = dc.keys()
     keys.sort()
     m1n = repo.changelog.read(parent1)[0]
     m2n = repo.changelog.read(parent2)[0]
     m1 = repo.manifest.read(m1n)
     m2 = repo.manifest.read(m2n)
     errors = 0
     for f in dc:
         state = repo.dirstate.state(f)
         if state in "nr" and f not in m1:
             ui.warn("%s in state %s, but not in manifest1\n" % (f, state))
             errors += 1
         if state in "a" and f in m1:
             ui.warn("%s in state %s, but also in manifest1\n" % (f, state))
             errors += 1
         if state in "m" and f not in m1 and f not in m2:
             ui.warn("%s in state %s, but not in either manifest\n" %
                     (f, state))
             errors += 1
     for f in m1:
         state = repo.dirstate.state(f)
         if state not in "nrm":
             ui.warn("%s in manifest1, but listed as state %s" % (f, state))
             errors += 1
     if errors:
         raise util.Abort(".hg/dirstate inconsistent with current parent's manifest")
 
 def debugconfig(ui):
     try:
         repo = hg.repository(ui)
     except: pass
     for section, name, value in ui.walkconfig():
         ui.write('%s.%s=%s\n' % (section, name, value))
 
 def debugstate(ui, repo):
     """show the contents of the current dirstate"""
     repo.dirstate.read()
     dc = repo.dirstate.map
     keys = dc.keys()
     keys.sort()
     for file_ in keys:
         ui.write("%c %3o %10d %s %s\n"
                  % (dc[file_][0], dc[file_][1] & 0777, dc[file_][2],
                     time.strftime("%x %X",
                                   time.localtime(dc[file_][3])), file_))
 
 def debugindex(ui, file_):
     """dump the contents of an index file"""
     r = hg.revlog(hg.opener(""), file_, "")
     ui.write("   rev    offset  length   base linkrev" +
              " nodeid       p1           p2\n")
     for i in range(r.count()):
         e = r.index[i]
         ui.write("% 6d % 9d % 7d % 6d % 7d %s %s %s\n" % (
                 i, e[0], e[1], e[2], e[3],
             hg.short(e[6]), hg.short(e[4]), hg.short(e[5])))
 
 def debugindexdot(ui, file_):
     """dump an index DAG as a .dot file"""
     r = hg.revlog(hg.opener(""), file_, "")
     ui.write("digraph G {\n")
     for i in range(r.count()):
         e = r.index[i]
         ui.write("\t%d -> %d\n" % (r.rev(e[4]), i))
         if e[5] != hg.nullid:
             ui.write("\t%d -> %d\n" % (r.rev(e[5]), i))
     ui.write("}\n")
 
 def debugwalk(ui, repo, *pats, **opts):
     items = list(walk(repo, pats, opts))
     if not items: return
     fmt = '%%s  %%-%ds  %%-%ds  %%s' % (
         max([len(abs) for (src, abs, rel, exact) in items]),
         max([len(rel) for (src, abs, rel, exact) in items]))
     exactly = {True: 'exact', False: ''}
     for src, abs, rel, exact in items:
         print fmt % (src, abs, rel, exactly[exact])
 
 def diff(ui, repo, *pats, **opts):
     """diff working directory (or selected files)"""
     node1, node2 = None, None
     revs = [repo.lookup(x) for x in opts['rev']]
 
     if len(revs) > 0:
         node1 = revs[0]
     if len(revs) > 1:
         node2 = revs[1]
     if len(revs) > 2:
         raise util.Abort("too many revisions to diff")
 
     files = []
     match = util.always
     if pats:
         roots, match, results = makewalk(repo, pats, opts)
         for src, abs, rel, exact in results:
             files.append(abs)
 
     dodiff(sys.stdout, ui, repo, node1, node2, files, match=match,
            text=opts['text'])
 
 def doexport(ui, repo, changeset, seqno, total, revwidth, opts):
     node = repo.lookup(changeset)
     prev, other = repo.changelog.parents(node)
     change = repo.changelog.read(node)
 
     fp = make_file(repo, repo.changelog, opts['output'],
                    node=node, total=total, seqno=seqno,
                    revwidth=revwidth)
     if fp != sys.stdout:
         ui.note("%s\n" % fp.name)
 
     fp.write("# HG changeset patch\n")
     fp.write("# User %s\n" % change[1])
     fp.write("# Node ID %s\n" % hg.hex(node))
     fp.write("# Parent  %s\n" % hg.hex(prev))
     if other != hg.nullid:
         fp.write("# Parent  %s\n" % hg.hex(other))
     fp.write(change[4].rstrip())
     fp.write("\n\n")
 
     dodiff(fp, ui, repo, prev, node, text=opts['text'])
     if fp != sys.stdout: fp.close()
 
 def export(ui, repo, *changesets, **opts):
     """dump the header and diffs for one or more changesets"""
     if not changesets:
         raise util.Abort("export requires at least one changeset")
     seqno = 0
     revs = list(revrange(ui, repo, changesets))
     total = len(revs)
     revwidth = max(len(revs[0]), len(revs[-1]))
     ui.note(len(revs) > 1 and "Exporting patches:\n" or "Exporting patch:\n")
     for cset in revs:
         seqno += 1
         doexport(ui, repo, cset, seqno, total, revwidth, opts)
 
 def forget(ui, repo, *pats, **opts):
     """don't add the specified files on the next commit"""
     forget = []
     for src, abs, rel, exact in walk(repo, pats, opts):
         if repo.dirstate.state(abs) == 'a':
             forget.append(abs)
             if not exact: ui.status('forgetting ', rel, '\n')
     repo.forget(forget)
 
 def heads(ui, repo, **opts):
     """show current repository heads"""
     heads = repo.changelog.heads()
     br = None
     if opts['branches']:
         br = repo.branchlookup(heads)
     for n in repo.changelog.heads():
         show_changeset(ui, repo, changenode=n, brinfo=br)
 
 def identify(ui, repo):
     """print information about the working copy"""
     parents = [p for p in repo.dirstate.parents() if p != hg.nullid]
     if not parents:
         ui.write("unknown\n")
         return
 
     hexfunc = ui.verbose and hg.hex or hg.short
     (c, a, d, u) = repo.changes()
     output = ["%s%s" % ('+'.join([hexfunc(parent) for parent in parents]),
                         (c or a or d) and "+" or "")]
 
     if not ui.quiet:
         # multiple tags for a single parent separated by '/'
         parenttags = ['/'.join(tags)
                       for tags in map(repo.nodetags, parents) if tags]
         # tags for multiple parents separated by ' + '
         if parenttags:
             output.append(' + '.join(parenttags))
 
     ui.write("%s\n" % ' '.join(output))
 
 def import_(ui, repo, patch1, *patches, **opts):
     """import an ordered set of patches"""
     patches = (patch1,) + patches
 
     if not opts['force']:
         (c, a, d, u) = repo.changes()
         if c or a or d:
             ui.warn("abort: outstanding uncommitted changes!\n")
             return 1
 
     d = opts["base"]
     strip = opts["strip"]
 
     for patch in patches:
         ui.status("applying %s\n" % patch)
         pf = os.path.join(d, patch)
 
         message = []
         user = None
         hgpatch = False
         for line in file(pf):
             line = line.rstrip()
             if line.startswith("--- ") or line.startswith("diff -r"):
                 break
             elif hgpatch:
                 # parse values when importing the result of an hg export
                 if line.startswith("# User "):
                     user = line[7:]
                     ui.debug('User: %s\n' % user)
                 elif not line.startswith("# ") and line:
                     message.append(line)
                     hgpatch = False
             elif line == '# HG changeset patch':
                 hgpatch = True
                 message = []       # We may have collected garbage
             else:
                 message.append(line)
 
         # make sure message isn't empty
         if not message:
             message = "imported patch %s\n" % patch
         else:
             message = "%s\n" % '\n'.join(message)
         ui.debug('message:\n%s\n' % message)
 
         f = os.popen("patch -p%d < '%s'" % (strip, pf))
         files = []
         for l in f.read().splitlines():
             l.rstrip('\r\n');
             ui.status("%s\n" % l)
             if l.startswith('patching file '):
                 pf = l[14:]
                 if pf not in files:
                     files.append(pf)
         patcherr = f.close()
         if patcherr:
             raise util.Abort("patch failed")
 
         if len(files) > 0:
             addremove(ui, repo, *files)
         repo.commit(files, message, user)
 
 def incoming(ui, repo, source="default"):
     """show new changesets found in source"""
     source = ui.expandpath(source)
     other = hg.repository(ui, source)
     if not other.local():
         ui.warn("abort: incoming doesn't work for remote"
                 + " repositories yet, sorry!\n")
         return 1
     o = repo.findincoming(other)
     if not o:
         return
     o = other.newer(o)
     o.reverse()
     for n in o:
         show_changeset(ui, other, changenode=n)
 
 def init(ui, dest="."):
     """create a new repository in the given directory"""
     if not os.path.exists(dest):
         os.mkdir(dest)
     hg.repository(ui, dest, create=1)
 
 def locate(ui, repo, *pats, **opts):
     """locate files matching specific patterns"""
     end = '\n'
     if opts['print0']: end = '\0'
 
     for src, abs, rel, exact in walk(repo, pats, opts, '(?:.*/|)'):
         if repo.dirstate.state(abs) == '?': continue
         if opts['fullpath']:
             ui.write(os.path.join(repo.root, abs), end)
         else:
             ui.write(rel, end)
 
-def log(ui, repo, f=None, **opts):
-    """show the revision history of the repository or a single file"""
-    if f:
-        files = relpath(repo, [f])
-        filelog = repo.file(files[0])
-        log = filelog
-        lookup = filelog.lookup
-    else:
-        files = None
-        filelog = None
-        log = repo.changelog
-        lookup = repo.lookup
-    revlist = []
-    revs = [log.rev(lookup(rev)) for rev in opts['rev']]
-    while revs:
-        if len(revs) == 1:
-            revlist.append(revs.pop(0))
-        else:
-            a = revs.pop(0)
-            b = revs.pop(0)
-            off = a > b and -1 or 1
-            revlist.extend(range(a, b + off, off))
+def log(ui, repo, *pats, **opts):
+    """show revision history of entire repository or files"""
+    # This code most commonly needs to iterate backwards over the
+    # history it is interested in.  This has awful (quadratic-looking)
+    # performance, so we use iterators that walk forwards through
+    # windows of revisions, yielding revisions in reverse order, while
+    # walking the windows backwards.
+    files, matchfn, anypats = matchpats(repo, repo.getcwd(), pats, opts)
+    revs = map(int, revrange(ui, repo, opts['rev'] or ['tip:0']))
+    wanted = {}
+    slowpath = anypats
+    window = 300
+    if not slowpath and not files:
+        # No files, no patterns.  Display all revs.
+        wanted = dict(zip(revs, revs))
+    if not slowpath:
+        # Only files, no patterns.  Check the history of each file.
+        def filerevgen(filelog):
+            for i in xrange(filelog.count() - 1, 0, -window):
+                revs = []
+                for j in xrange(max(0, i - window), i):
+                    revs.append(filelog.linkrev(filelog.node(j)))
+                revs.reverse()
+                for rev in revs:
+                    yield rev
 
-    for i in revlist or range(log.count() - 1, -1, -1):
-        show_changeset(ui, repo, filelog=filelog, rev=i)
+        minrev, maxrev = min(revs), max(revs)
+        for filelog in map(repo.file, files):
+            # A zero count may be a directory or deleted file, so
+            # try to find matching entries on the slow path.
+            if filelog.count() == 0:
+                slowpath = True
+                break
+            for rev in filerevgen(filelog):
+                if rev <= maxrev:
+                    if rev < minrev: break
+                    wanted[rev] = 1
+    if slowpath:
+        # The slow path checks files modified in every changeset.
+        def mfrevgen():
+            for i in xrange(repo.changelog.count() - 1, 0, -window):
+                for j in xrange(max(0, i - window), i):
+                    yield j, repo.changelog.read(repo.lookup(str(j)))[3]
+
+        for rev, mf in mfrevgen():
+            if filter(matchfn, mf):
+                wanted[rev] = 1
+
+    def changerevgen():
+        class dui:
+            # Implement and delegate some ui protocol.  Save hunks of
+            # output for later display in the desired order.
+            def __init__(self, ui):
+                self.ui = ui
+                self.hunk = {}
+            def bump(self, rev):
+                self.rev = rev
+                self.hunk[rev] = []
+            def status(self, *args):
+                if not self.quiet: self.write(*args)
+            def write(self, *args):
+                self.hunk[self.rev].append(args)
+            def __getattr__(self, key):
+                return getattr(self.ui, key)
+        for i in xrange(0, len(revs), window):
+            nrevs = [rev for rev in revs[i : min(i + window, len(revs))]
+                     if rev in wanted]
+            srevs = list(nrevs)
+            srevs.sort()
+            du = dui(ui)
+            for rev in srevs:
+                du.bump(rev)
+                yield rev, du
+            for rev in nrevs:
+                for args in du.hunk[rev]:
+                    ui.write(*args)
+
+    for rev, dui in changerevgen():
+        show_changeset(dui, repo, rev)
         if opts['patch']:
-            if filelog:
-                filenode = filelog.node(i)
-                i = filelog.linkrev(filenode)
-            changenode = repo.changelog.node(i)
+            changenode = repo.changelog.node(rev)
             prev, other = repo.changelog.parents(changenode)
-            dodiff(sys.stdout, ui, repo, prev, changenode, files)
-            ui.write("\n\n")
+            dodiff(dui, dui, repo, prev, changenode, files)
+            du.write("\n\n")
 
 def manifest(ui, repo, rev=None):
     """output the latest or given revision of the project manifest"""
     if rev:
         try:
             # assume all revision numbers are for changesets
             n = repo.lookup(rev)
             change = repo.changelog.read(n)
             n = change[0]
         except hg.RepoError:
             n = repo.manifest.lookup(rev)
     else:
         n = repo.manifest.tip()
     m = repo.manifest.read(n)
     mf = repo.manifest.readflags(n)
     files = m.keys()
     files.sort()
 
     for f in files:
         ui.write("%40s %3s %s\n" % (hg.hex(m[f]), mf[f] and "755" or "644", f))
 
 def outgoing(ui, repo, dest="default-push"):
     """show changesets not found in destination"""
     dest = ui.expandpath(dest)
     other = hg.repository(ui, dest)
     o = repo.findoutgoing(other)
     o = repo.newer(o)
     o.reverse()
     for n in o:
         show_changeset(ui, repo, changenode=n)
 
 def parents(ui, repo, rev=None):
     """show the parents of the working dir or revision"""
     if rev:
         p = repo.changelog.parents(repo.lookup(rev))
     else:
         p = repo.dirstate.parents()
 
     for n in p:
         if n != hg.nullid:
             show_changeset(ui, repo, changenode=n)
 
 def paths(ui, search = None):
     """show definition of symbolic path names"""
     try:
         repo = hg.repository(ui=ui)
     except:
         pass
 
     if search:
         for name, path in ui.configitems("paths"):
             if name == search:
                 ui.write("%s\n" % path)
                 return
         ui.warn("not found!\n")
         return 1
     else:
         for name, path in ui.configitems("paths"):
             ui.write("%s = %s\n" % (name, path))
 
 def pull(ui, repo, source="default", **opts):
     """pull changes from the specified source"""
     source = ui.expandpath(source)
     ui.status('pulling from %s\n' % (source))
 
     if opts['ssh']:
         ui.setconfig("ui", "ssh", opts['ssh'])
     if opts['remotecmd']:
         ui.setconfig("ui", "remotecmd", opts['remotecmd'])
 
     other = hg.repository(ui, source)
     r = repo.pull(other)
     if not r:
         if opts['update']:
             return update(ui, repo)
         else:
             ui.status("(run 'hg update' to get a working copy)\n")
 
     return r
 
 def push(ui, repo, dest="default-push", force=False, ssh=None, remotecmd=None):
     """push changes to the specified destination"""
     dest = ui.expandpath(dest)
     ui.status('pushing to %s\n' % (dest))
 
     if ssh:
         ui.setconfig("ui", "ssh", ssh)
     if remotecmd:
         ui.setconfig("ui", "remotecmd", remotecmd)
 
     other = hg.repository(ui, dest)
     r = repo.push(other, force)
     return r
 
 def rawcommit(ui, repo, *flist, **rc):
     "raw commit interface"
     if rc['text']:
         ui.warn("Warning: -t and --text is deprecated,"
                 " please use -m or --message instead.\n")
     message = rc['message'] or rc['text']
     if not message and rc['logfile']:
         try:
             message = open(rc['logfile']).read()
         except IOError:
             pass
     if not message and not rc['logfile']:
         ui.warn("abort: missing commit message\n")
         return 1
 
     files = relpath(repo, list(flist))
     if rc['files']:
         files += open(rc['files']).read().splitlines()
 
     rc['parent'] = map(repo.lookup, rc['parent'])
 
     repo.rawcommit(files, message, rc['user'], rc['date'], *rc['parent'])
 
 def recover(ui, repo):
     """roll back an interrupted transaction"""
     repo.recover()
 
 def remove(ui, repo, file1, *files):
     """remove the specified files on the next commit"""
     repo.remove(relpath(repo, (file1,) + files))
 
 def revert(ui, repo, *names, **opts):
     """revert modified files or dirs back to their unmodified states"""
     node = opts['rev'] and repo.lookup(opts['rev']) or \
            repo.dirstate.parents()[0]
     root = os.path.realpath(repo.root)
 
     def trimpath(p):
         p = os.path.realpath(p)
         if p.startswith(root):
             rest = p[len(root):]
             if not rest:
                 return rest
             if p.startswith(os.sep):
                 return rest[1:]
             return p
 
     relnames = map(trimpath, names or [os.getcwd()])
     chosen = {}
 
     def choose(name):
         def body(name):
             for r in relnames:
                 if not name.startswith(r):
                     continue
                 rest = name[len(r):]
                 if not rest:
                     return r, True
                 depth = rest.count(os.sep)
                 if not r:
                     if depth == 0 or not opts['nonrecursive']:
                         return r, True
                 elif rest[0] == os.sep:
                     if depth == 1 or not opts['nonrecursive']:
                         return r, True
             return None, False
         relname, ret = body(name)
         if ret:
             chosen[relname] = 1
         return ret
 
     r = repo.update(node, False, True, choose, False)
     for n in relnames:
         if n not in chosen:
             ui.warn('error: no matches for %s\n' % n)
             r = 1
     sys.stdout.flush()
     return r
 
 def root(ui, repo):
     """print the root (top) of the current working dir"""
     ui.write(repo.root + "\n")
 
 def serve(ui, repo, **opts):
     """export the repository via HTTP"""
 
     if opts["stdio"]:
         fin, fout = sys.stdin, sys.stdout
         sys.stdout = sys.stderr
 
         def getarg():
             argline = fin.readline()[:-1]
             arg, l = argline.split()
             val = fin.read(int(l))
             return arg, val
         def respond(v):
             fout.write("%d\n" % len(v))
             fout.write(v)
             fout.flush()
 
         lock = None
 
         while 1:
             cmd = fin.readline()[:-1]
             if cmd == '':
                 return
             if cmd == "heads":
                 h = repo.heads()
                 respond(" ".join(map(hg.hex, h)) + "\n")
             if cmd == "lock":
                 lock = repo.lock()
                 respond("")
             if cmd == "unlock":
                 if lock:
                     lock.release()
                 lock = None
                 respond("")
             elif cmd == "branches":
                 arg, nodes = getarg()
                 nodes = map(hg.bin, nodes.split(" "))
                 r = []
                 for b in repo.branches(nodes):
                     r.append(" ".join(map(hg.hex, b)) + "\n")
                 respond("".join(r))
             elif cmd == "between":
                 arg, pairs = getarg()
                 pairs = [map(hg.bin, p.split("-")) for p in pairs.split(" ")]
                 r = []
                 for b in repo.between(pairs):
                     r.append(" ".join(map(hg.hex, b)) + "\n")
                 respond("".join(r))
             elif cmd == "changegroup":
                 nodes = []
                 arg, roots = getarg()
                 nodes = map(hg.bin, roots.split(" "))
 
                 cg = repo.changegroup(nodes)
                 while 1:
                     d = cg.read(4096)
                     if not d:
                         break
                     fout.write(d)
 
                 fout.flush()
 
             elif cmd == "addchangegroup":
                 if not lock:
                     respond("not locked")
                     continue
                 respond("")
 
                 r = repo.addchangegroup(fin)
                 respond("")
 
     optlist = "name templates style address port ipv6 accesslog errorlog"
     for o in optlist.split():
         if opts[o]:
             ui.setconfig("web", o, opts[o])
 
     httpd = hgweb.create_server(repo)
 
     if ui.verbose:
         addr, port = httpd.socket.getsockname()
         if addr == '0.0.0.0':
             addr = socket.gethostname()
         else:
             try:
                 addr = socket.gethostbyaddr(addr)[0]
             except socket.error:
                 pass
         if port != 80:
             ui.status('listening at http://%s:%d/\n' % (addr, port))
         else:
             ui.status('listening at http://%s/\n' % addr)
     httpd.serve_forever()
 
 def status(ui, repo, *pats, **opts):
     '''show changed files in the working directory
 
     M = modified
     A = added
     R = removed
     ? = not tracked
     '''
 
     cwd = repo.getcwd()
-    files, matchfn = matchpats(repo, cwd, pats, opts)
+    files, matchfn, anypats = matchpats(repo, cwd, pats, opts)
     (c, a, d, u) = [[util.pathto(cwd, x) for x in n]
                     for n in repo.changes(files=files, match=matchfn)]
 
     changetypes = [('modified', 'M', c),
                    ('added', 'A', a),
                    ('removed', 'R', d),
                    ('unknown', '?', u)]
 
     for opt, char, changes in ([ct for ct in changetypes if opts[ct[0]]]
                                or changetypes):
         for f in changes:
             ui.write("%s %s\n" % (char, f))
 
 def tag(ui, repo, name, rev=None, **opts):
     """add a tag for the current tip or a given revision"""
     if opts['text']:
         ui.warn("Warning: -t and --text is deprecated,"
                 " please use -m or --message instead.\n")
     if name == "tip":
         ui.warn("abort: 'tip' is a reserved name!\n")
         return -1
     if rev:
         r = hg.hex(repo.lookup(rev))
     else:
         r = hg.hex(repo.changelog.tip())
 
     if name.find(revrangesep) >= 0:
         ui.warn("abort: '%s' cannot be used in a tag name\n" % revrangesep)
         return -1
 
     if opts['local']:
         repo.opener("localtags", "a").write("%s %s\n" % (r, name))
         return
 
     (c, a, d, u) = repo.changes()
     for x in (c, a, d, u):
         if ".hgtags" in x:
             ui.warn("abort: working copy of .hgtags is changed!\n")
             ui.status("(please commit .hgtags manually)\n")
             return -1
 
     repo.wfile(".hgtags", "ab").write("%s %s\n" % (r, name))
     if repo.dirstate.state(".hgtags") == '?':
         repo.add([".hgtags"])
 
     message = (opts['message'] or opts['text'] or
                "Added tag %s for changeset %s" % (name, r))
     repo.commit([".hgtags"], message, opts['user'], opts['date'])
 
 def tags(ui, repo):
     """list repository tags"""
 
     l = repo.tagslist()
     l.reverse()
     for t, n in l:
         try:
             r = "%5d:%s" % (repo.changelog.rev(n), hg.hex(n))
         except KeyError:
             r = "    ?:?"
         ui.write("%-30s %s\n" % (t, r))
 
 def tip(ui, repo):
     """show the tip revision"""
     n = repo.changelog.tip()
     show_changeset(ui, repo, changenode=n)
 
 def undo(ui, repo):
     """undo the last commit or pull
 
     Roll back the last pull or commit transaction on the
     repository, restoring the project to its earlier state.
 
     This command should be used with care. There is only one level of
     undo and there is no redo.
 
     This command is not intended for use on public repositories. Once
     a change is visible for pull by other users, undoing it locally is
     ineffective.
     """
     repo.undo()
 
 def update(ui, repo, node=None, merge=False, clean=False, branch=None):
     '''update or merge working directory
 
     If there are no outstanding changes in the working directory and
     there is a linear relationship between the current version and the
     requested version, the result is the requested version.
 
     Otherwise the result is a merge between the contents of the
     current working directory and the requested version. Files that
     changed between either parent are marked as changed for the next
     commit and a commit must be performed before any further updates
     are allowed.
     '''
     if branch:
         br = repo.branchlookup(branch=branch)
         found = []
         for x in br:
             if branch in br[x]:
                 found.append(x)
         if len(found) > 1:
             ui.warn("Found multiple heads for %s\n" % branch)
             for x in found:
                 show_changeset(ui, repo, changenode=x, brinfo=br)
             return 1
         if len(found) == 1:
             node = found[0]
             ui.warn("Using head %s for branch %s\n" % (hg.short(node), branch))
         else:
             ui.warn("branch %s not found\n" % (branch))
             return 1
     else:
         node = node and repo.lookup(node) or repo.changelog.tip()
     return repo.update(node, allow=merge, force=clean)
 
 def verify(ui, repo):
     """verify the integrity of the repository"""
     return repo.verify()
 
 # Command options and aliases are listed here, alphabetically
 
 table = {
     "^add":
         (add,
          [('I', 'include', [], 'include path in search'),
           ('X', 'exclude', [], 'exclude path from search')],
          "hg add [OPTION]... [FILE]..."),
     "addremove":
         (addremove,
          [('I', 'include', [], 'include path in search'),
           ('X', 'exclude', [], 'exclude path from search')],
          "hg addremove [OPTION]... [FILE]..."),
     "^annotate":
         (annotate,
          [('r', 'rev', '', 'revision'),
           ('a', 'text', None, 'treat all files as text'),
           ('u', 'user', None, 'show user'),
           ('n', 'number', None, 'show revision number'),
           ('c', 'changeset', None, 'show changeset'),
           ('I', 'include', [], 'include path in search'),
           ('X', 'exclude', [], 'exclude path from search')],
          'hg annotate [OPTION]... FILE...'),
     "cat":
         (cat,
          [('o', 'output', "", 'output to file')],
          'hg cat [-o OUTFILE] FILE [REV]'),
     "^clone":
         (clone,
          [('U', 'noupdate', None, 'skip update after cloning'),
           ('e', 'ssh', "", 'ssh command'),
           ('', 'remotecmd', "", 'remote hg command')],
          'hg clone [OPTIONS] SOURCE [DEST]'),
     "^commit|ci":
         (commit,
          [('A', 'addremove', None, 'run add/remove during commit'),
           ('I', 'include', [], 'include path in search'),
           ('X', 'exclude', [], 'exclude path from search'),
           ('m', 'message', "", 'commit message'),
           ('t', 'text', "", 'commit message (deprecated: use -m)'),
           ('l', 'logfile', "", 'commit message file'),
           ('d', 'date', "", 'date code'),
           ('u', 'user', "", 'user')],
          'hg commit [OPTION]... [FILE]...'),
     "copy": (copy, [], 'hg copy SOURCE DEST'),
     "debugcheckstate": (debugcheckstate, [], 'debugcheckstate'),
     "debugconfig": (debugconfig, [], 'debugconfig'),
     "debugstate": (debugstate, [], 'debugstate'),
     "debugindex": (debugindex, [], 'debugindex FILE'),
     "debugindexdot": (debugindexdot, [], 'debugindexdot FILE'),
     "debugwalk":
         (debugwalk,
          [('I', 'include', [], 'include path in search'),
           ('X', 'exclude', [], 'exclude path from search')],
          'debugwalk [OPTION]... [FILE]...'),
     "^diff":
         (diff,
          [('r', 'rev', [], 'revision'),
           ('a', 'text', None, 'treat all files as text'),
           ('I', 'include', [], 'include path in search'),
           ('X', 'exclude', [], 'exclude path from search')],
          'hg diff [-I] [-X] [-r REV1 [-r REV2]] [FILE]...'),
     "^export":
         (export,
          [('o', 'output', "", 'output to file'),
           ('a', 'text', None, 'treat all files as text')],
          "hg export [-o OUTFILE] REV..."),
     "forget":
         (forget,
          [('I', 'include', [], 'include path in search'),
           ('X', 'exclude', [], 'exclude path from search')],
          "hg forget [OPTION]... FILE..."),
     "heads":
         (heads,
          [('b', 'branches', None, 'find branch info')],
          'hg [-b] heads'),
     "help": (help_, [], 'hg help [COMMAND]'),
     "identify|id": (identify, [], 'hg identify'),
     "import|patch":
         (import_,
          [('p', 'strip', 1, 'path strip'),
           ('f', 'force', None, 'skip check for outstanding changes'),
           ('b', 'base', "", 'base path')],
          "hg import [-p NUM] [-b BASE] PATCH..."),
     "incoming|in": (incoming, [], 'hg incoming [SOURCE]'),
     "^init": (init, [], 'hg init [DEST]'),
     "locate":
         (locate,
          [('r', 'rev', '', 'revision'),
           ('0', 'print0', None, 'end records with NUL'),
           ('f', 'fullpath', None, 'print complete paths'),
           ('I', 'include', [], 'include path in search'),
           ('X', 'exclude', [], 'exclude path from search')],
          'hg locate [OPTION]... [PATTERN]...'),
     "^log|history":
         (log,
-         [('r', 'rev', [], 'revision'),
+         [('I', 'include', [], 'include path in search'),
+          ('X', 'exclude', [], 'exclude path from search'),
+          ('r', 'rev', [], 'revision'),
           ('p', 'patch', None, 'show patch')],
          'hg log [-r REV1 [-r REV2]] [-p] [FILE]'),
     "manifest": (manifest, [], 'hg manifest [REV]'),
     "outgoing|out": (outgoing, [], 'hg outgoing [DEST]'),
     "parents": (parents, [], 'hg parents [REV]'),
     "paths": (paths, [], 'hg paths [NAME]'),
     "^pull":
         (pull,
          [('u', 'update', None, 'update working directory'),
           ('e', 'ssh', "", 'ssh command'),
           ('', 'remotecmd', "", 'remote hg command')],
          'hg pull [OPTIONS] [SOURCE]'),
     "^push":
         (push,
          [('f', 'force', None, 'force push'),
           ('e', 'ssh', "", 'ssh command'),
           ('', 'remotecmd', "", 'remote hg command')],
          'hg push [-f] [DEST]'),
     "rawcommit":
         (rawcommit,
          [('p', 'parent', [], 'parent'),
           ('d', 'date', "", 'date code'),
           ('u', 'user', "", 'user'),
           ('F', 'files', "", 'file list'),
           ('m', 'message', "", 'commit message'),
           ('t', 'text', "", 'commit message (deprecated: use -m)'),
           ('l', 'logfile', "", 'commit message file')],
          'hg rawcommit [OPTION]... [FILE]...'),
     "recover": (recover, [], "hg recover"),
     "^remove|rm": (remove, [], "hg remove FILE..."),
     "^revert":
         (revert,
          [("n", "nonrecursive", None, "don't recurse into subdirs"),
           ("r", "rev", "", "revision")],
          "hg revert [-n] [-r REV] [NAME]..."),
     "root": (root, [], "hg root"),
     "^serve":
         (serve,
          [('A', 'accesslog', '', 'access log file'),
           ('E', 'errorlog', '', 'error log file'),
           ('p', 'port', 0, 'listen port'),
           ('a', 'address', '', 'interface address'),
           ('n', 'name', "", 'repository name'),
           ('', 'stdio', None, 'for remote clients'),
           ('t', 'templates', "", 'template directory'),
           ('', 'style', "", 'template style'),
           ('6', 'ipv6', None, 'use IPv6 in addition to IPv4')],
          "hg serve [OPTION]..."),
     "^status":
         (status,
          [('m', 'modified', None, 'show only modified files'),
           ('a', 'added', None, 'show only added files'),
           ('r', 'removed', None, 'show only removed files'),
           ('u', 'unknown', None, 'show only unknown (not tracked) files'),
           ('I', 'include', [], 'include path in search'),
           ('X', 'exclude', [], 'exclude path from search')],
          "hg status [OPTION]... [FILE]..."),
     "tag":
         (tag,
          [('l', 'local', None, 'make the tag local'),
           ('m', 'message', "", 'commit message'),
           ('t', 'text', "", 'commit message (deprecated: use -m)'),
           ('d', 'date', "", 'date code'),
           ('u', 'user', "", 'user')],
          'hg tag [OPTION]... NAME [REV]'),
     "tags": (tags, [], 'hg tags'),
     "tip": (tip, [], 'hg tip'),
     "undo": (undo, [], 'hg undo'),
     "^update|up|checkout|co":
         (update,
          [('b', 'branch', "", 'checkout the head of a specific branch'),
           ('m', 'merge', None, 'allow merging of conflicts'),
           ('C', 'clean', None, 'overwrite locally modified files')],
          'hg update [-b TAG] [-m] [-C] [REV]'),
     "verify": (verify, [], 'hg verify'),
     "version": (show_version, [], 'hg version'),
     }
 
 globalopts = [('v', 'verbose', None, 'verbose mode'),
               ('', 'debug', None, 'debug mode'),
               ('q', 'quiet', None, 'quiet mode'),
               ('', 'profile', None, 'profile'),
               ('', 'cwd', '', 'change working directory'),
               ('R', 'repository', "", 'repository root directory'),
               ('', 'traceback', None, 'print traceback on exception'),
               ('y', 'noninteractive', None, 'run non-interactively'),
               ('', 'version', None, 'output version information and exit'),
               ('', 'time', None, 'time how long the command takes'),
              ]
 
 norepo = "clone init version help debugconfig debugindex debugindexdot paths"
 
 def find(cmd):
     for e in table.keys():
         if re.match("(%s)$" % e, cmd):
             return e, table[e]
 
     raise UnknownCommand(cmd)
 
 class SignalInterrupt(Exception):
     """Exception raised on SIGTERM and SIGHUP."""
 
 def catchterm(*args):
     raise SignalInterrupt
 
 def run():
     sys.exit(dispatch(sys.argv[1:]))
 
 class ParseError(Exception):
     """Exception raised on errors in parsing the command line."""
 
 def parse(args):
     options = {}
     cmdoptions = {}
 
     try:
         args = fancyopts.fancyopts(args, globalopts, options)
     except fancyopts.getopt.GetoptError, inst:
         raise ParseError(None, inst)
 
     if options["version"]:
         return ("version", show_version, [], options, cmdoptions)
     elif not args:
         return ("help", help_, ["shortlist"], options, cmdoptions)
     else:
         cmd, args = args[0], args[1:]
 
     i = find(cmd)[1]
 
     # combine global options into local
     c = list(i[1])
     for o in globalopts:
         c.append((o[0], o[1], options[o[1]], o[3]))
 
     try:
         args = fancyopts.fancyopts(args, c, cmdoptions)
     except fancyopts.getopt.GetoptError, inst:
         raise ParseError(cmd, inst)
 
     # separate global options back out
     for o in globalopts:
         n = o[1]
         options[n] = cmdoptions[n]
         del cmdoptions[n]
 
     return (cmd, i[0], args, options, cmdoptions)
 
 def dispatch(args):
     signal.signal(signal.SIGTERM, catchterm)
     try:
         signal.signal(signal.SIGHUP, catchterm)
     except AttributeError:
         pass
 
     try:
         cmd, func, args, options, cmdoptions = parse(args)
     except ParseError, inst:
         u = ui.ui()
         if inst.args[0]:
             u.warn("hg %s: %s\n" % (inst.args[0], inst.args[1]))
             help_(u, inst.args[0])
         else:
             u.warn("hg: %s\n" % inst.args[1])
             help_(u, 'shortlist')
         sys.exit(-1)
     except UnknownCommand, inst:
         u = ui.ui()
         u.warn("hg: unknown command '%s'\n" % inst.args[0])
         help_(u, 'shortlist')
         sys.exit(1)
 
     if options['cwd']:
         try:
             os.chdir(options['cwd'])
         except OSError, inst:
             u = ui.ui()
             u.warn('abort: %s: %s\n' % (options['cwd'], inst.strerror))
             sys.exit(1)
 
     if options["time"]:
         def get_times():
             t = os.times()
             if t[4] == 0.0: # Windows leaves this as zero, so use time.clock()
                 t = (t[0], t[1], t[2], t[3], time.clock())
             return t
         s = get_times()
         def print_time():
             t = get_times()
             u = ui.ui()
             u.warn("Time: real %.3f secs (user %.3f+%.3f sys %.3f+%.3f)\n" %
                 (t[4]-s[4], t[0]-s[0], t[2]-s[2], t[1]-s[1], t[3]-s[3]))
         atexit.register(print_time)
 
     u = ui.ui(options["verbose"], options["debug"], options["quiet"],
               not options["noninteractive"])
 
     try:
         try:
             if cmd not in norepo.split():
                 path = options["repository"] or ""
                 repo = hg.repository(ui=u, path=path)
                 d = lambda: func(u, repo, *args, **cmdoptions)
             else:
                 d = lambda: func(u, *args, **cmdoptions)
 
             if options['profile']:
                 import hotshot, hotshot.stats
                 prof = hotshot.Profile("hg.prof")
                 r = prof.runcall(d)
                 prof.close()
                 stats = hotshot.stats.load("hg.prof")
                 stats.strip_dirs()
                 stats.sort_stats('time', 'calls')
                 stats.print_stats(40)
                 return r
             else:
                 return d()
         except:
             if options['traceback']:
                 traceback.print_exc()
             raise
     except hg.RepoError, inst:
         u.warn("abort: ", inst, "!\n")
     except SignalInterrupt:
         u.warn("killed!\n")
     except KeyboardInterrupt:
         try:
             u.warn("interrupted!\n")
         except IOError, inst:
             if inst.errno == errno.EPIPE:
                 if u.debugflag:
                     u.warn("\nbroken pipe\n")
             else:
                 raise
     except IOError, inst:
         if hasattr(inst, "code"):
             u.warn("abort: %s\n" % inst)
         elif hasattr(inst, "reason"):
             u.warn("abort: error: %s\n" % inst.reason[1])
         elif hasattr(inst, "args") and inst[0] == errno.EPIPE:
             if u.debugflag: u.warn("broken pipe\n")
         else:
             raise
     except OSError, inst:
         if hasattr(inst, "filename"):
             u.warn("abort: %s: %s\n" % (inst.strerror, inst.filename))
         else:
             u.warn("abort: %s\n" % inst.strerror)
     except util.Abort, inst:
         u.warn('abort: ', inst.args[0] % inst.args[1:], '\n')
         sys.exit(1)
     except TypeError, inst:
         # was this an argument error?
         tb = traceback.extract_tb(sys.exc_info()[2])
         if len(tb) > 2: # no
             raise
         u.debug(inst, "\n")
         u.warn("%s: invalid arguments\n" % cmd)
         help_(u, cmd)
     except UnknownCommand, inst:
         u.warn("hg: unknown command '%s'\n" % inst.args[0])
         help_(u, 'shortlist')
 
     sys.exit(-1)

mercurial/util.py

@@ -1,286 +1,288
 # util.py - utility functions and platform specfic implementations
 #
 # Copyright 2005 K. Thananchayan <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 import os, errno
 from demandload import *
 demandload(globals(), "re")
 
 def binary(s):
     if s and '\0' in s[:4096]:
         return True
     return False
 
 def unique(g):
     seen = {}
     for f in g:
         if f not in seen:
             seen[f] = 1
             yield f
 
 class Abort(Exception):
     """Raised if a command needs to print an error and exit."""
 
 def always(fn): return True
 def never(fn): return False
 
 def globre(pat, head = '^', tail = '$'):
     "convert a glob pattern into a regexp"
     i, n = 0, len(pat)
     res = ''
     group = False
     def peek(): return i < n and pat[i]
     while i < n:
         c = pat[i]
         i = i+1
         if c == '*':
             if peek() == '*':
                 i += 1
                 res += '.*'
             else:
                 res += '[^/]*'
         elif c == '?':
             res += '.'
         elif c == '[':
             j = i
             if j < n and pat[j] in '!]':
                 j += 1
             while j < n and pat[j] != ']':
                 j += 1
             if j >= n:
                 res += '\\['
             else:
                 stuff = pat[i:j].replace('\\','\\\\')
                 i = j + 1
                 if stuff[0] == '!':
                     stuff = '^' + stuff[1:]
                 elif stuff[0] == '^':
                     stuff = '\\' + stuff
                 res = '%s[%s]' % (res, stuff)
         elif c == '{':
             group = True
             res += '(?:'
         elif c == '}' and group:
             res += ')'
             group = False
         elif c == ',' and group:
             res += '|'
         else:
             res += re.escape(c)
     return head + res + tail
 
 _globchars = {'[': 1, '{': 1, '*': 1, '?': 1}
 
 def pathto(n1, n2):
     '''return the relative path from one place to another.
     this returns a path in the form used by the local filesystem, not hg.'''
     if not n1: return localpath(n2)
     a, b = n1.split('/'), n2.split('/')
     a.reverse(), b.reverse()
     while a and b and a[-1] == b[-1]:
         a.pop(), b.pop()
     b.reverse()
     return os.sep.join((['..'] * len(a)) + b)
 
 def canonpath(repo, cwd, myname):
     rootsep = repo.root + os.sep
     name = myname
     if not name.startswith(os.sep):
         name = os.path.join(repo.root, cwd, name)
     name = os.path.normpath(name)
     if name.startswith(rootsep):
         return pconvert(name[len(rootsep):])
     elif name == repo.root:
         return ''
     else:
         raise Abort('%s not under repository root' % myname)
 
 def matcher(repo, cwd, names, inc, exc, head = ''):
     def patkind(name):
         for prefix in 're:', 'glob:', 'path:', 'relpath:':
             if name.startswith(prefix): return name.split(':', 1)
         for c in name:
             if c in _globchars: return 'glob', name
         return 'relpath', name
 
     def regex(kind, name, tail):
         '''convert a pattern into a regular expression'''
         if kind == 're':
             return name
         elif kind == 'path':
             return '^' + re.escape(name) + '(?:/|$)'
         elif kind == 'relpath':
             return head + re.escape(name) + tail
         return head + globre(name, '', tail)
 
     def matchfn(pats, tail):
         """build a matching function from a set of patterns"""
         if pats:
             pat = '(?:%s)' % '|'.join([regex(k, p, tail) for (k, p) in pats])
             return re.compile(pat).match
 
     def globprefix(pat):
         '''return the non-glob prefix of a path, e.g. foo/* -> foo'''
         root = []
         for p in pat.split(os.sep):
             if patkind(p)[0] == 'glob': break
             root.append(p)
         return '/'.join(root)
 
     pats = []
     files = []
     roots = []
     for kind, name in map(patkind, names):
         if kind in ('glob', 'relpath'):
             name = canonpath(repo, cwd, name)
             if name == '':
                 kind, name = 'glob', '**'
         if kind in ('glob', 'path', 're'):
             pats.append((kind, name))
         if kind == 'glob':
             root = globprefix(name)
             if root: roots.append(root)
         elif kind == 'relpath':
             files.append((kind, name))
             roots.append(name)
 
     patmatch = matchfn(pats, '$') or always
     filematch = matchfn(files, '(?:/|$)') or always
     incmatch = always
     if inc:
         incmatch = matchfn(map(patkind, inc), '(?:/|$)')
     excmatch = lambda fn: False
     if exc:
         excmatch = matchfn(map(patkind, exc), '(?:/|$)')
 
-    return roots, lambda fn: (incmatch(fn) and not excmatch(fn) and
+    return (roots,
+            lambda fn: (incmatch(fn) and not excmatch(fn) and
                               (fn.endswith('/') or
                                (not pats and not files) or
                                (pats and patmatch(fn)) or
-                               (files and filematch(fn))))
+                         (files and filematch(fn)))),
+            (inc or exc or (pats and pats != [('glob', '**')])) and True)
 
 def system(cmd, errprefix=None):
     """execute a shell command that must succeed"""
     rc = os.system(cmd)
     if rc:
         errmsg = "%s %s" % (os.path.basename(cmd.split(None, 1)[0]),
                             explain_exit(rc)[0])
         if errprefix:
             errmsg = "%s: %s" % (errprefix, errmsg)
         raise Abort(errmsg)
 
 def rename(src, dst):
     try:
         os.rename(src, dst)
     except:
         os.unlink(dst)
         os.rename(src, dst)
 
 def copytree(src, dst, copyfile):
     """Copy a directory tree, files are copied using 'copyfile'."""
     names = os.listdir(src)
     os.mkdir(dst)
 
     for name in names:
         srcname = os.path.join(src, name)
         dstname = os.path.join(dst, name)
         if os.path.isdir(srcname):
             copytree(srcname, dstname, copyfile)
         elif os.path.isfile(srcname):
             copyfile(srcname, dstname)
         else:
             pass
 
 def _makelock_file(info, pathname):
     ld = os.open(pathname, os.O_CREAT | os.O_WRONLY | os.O_EXCL)
     os.write(ld, info)
     os.close(ld)
 
 def _readlock_file(pathname):
     return file(pathname).read()
 
 # Platfor specific varients
 if os.name == 'nt':
     nulldev = 'NUL:'
 
     def is_exec(f, last):
         return last
 
     def set_exec(f, mode):
         pass
 
     def pconvert(path):
         return path.replace("\\", "/")
 
     def localpath(path):
         return path.replace('/', '\\')
 
     def normpath(path):
         return pconvert(os.path.normpath(path))
 
     makelock = _makelock_file
     readlock = _readlock_file
 
     def explain_exit(code):
         return "exited with status %d" % code, code
 
 else:
     nulldev = '/dev/null'
 
     def is_exec(f, last):
         return (os.stat(f).st_mode & 0100 != 0)
 
     def set_exec(f, mode):
         s = os.stat(f).st_mode
         if (s & 0100 != 0) == mode:
             return
         if mode:
             # Turn on +x for every +r bit when making a file executable
             # and obey umask.
             umask = os.umask(0)
             os.umask(umask)
             os.chmod(f, s | (s & 0444) >> 2 & ~umask)
         else:
             os.chmod(f, s & 0666)
 
     def pconvert(path):
         return path
 
     def localpath(path):
         return path
 
     normpath = os.path.normpath
 
     def makelock(info, pathname):
         try:
             os.symlink(info, pathname)
         except OSError, why:
             if why.errno == errno.EEXIST:
                 raise
             else:
                 _makelock_file(info, pathname)
 
     def readlock(pathname):
         try:
             return os.readlink(pathname)
         except OSError, why:
             if why.errno == errno.EINVAL:
                 return _readlock_file(pathname)
             else:
                 raise
 
     def explain_exit(code):
         """return a 2-tuple (desc, code) describing a process's status"""
         if os.WIFEXITED(code):
             val = os.WEXITSTATUS(code)
             return "exited with status %d" % val, val
         elif os.WIFSIGNALED(code):
             val = os.WTERMSIG(code)
             return "killed by signal %d" % val, val
         elif os.WIFSTOPPED(code):
             val = os.WSTOPSIG(code)
             return "stopped by signal %d" % val, val
         raise ValueError("invalid exit code")