merge

doc/hgrc.5.txt

@@ -1,452 +1,464 b''
 HGRC(5)
 =======
 Bryan O'Sullivan <[e-mail]>
 
 NAME
 ----
 hgrc - configuration files for Mercurial
 
 SYNOPSIS
 --------
 
 The Mercurial system uses a set of configuration files to control
 aspects of its behaviour.
 
 FILES
 -----
 
 Mercurial reads configuration data from several files, if they exist.
 The names of these files depend on the system on which Mercurial is
 installed.
 
 (Unix)    <install-root>/etc/mercurial/hgrc.d/*.rc::
 (Unix)    <install-root>/etc/mercurial/hgrc::
     Per-installation configuration files, searched for in the
     directory where Mercurial is installed.  For example, if installed
     in /shared/tools, Mercurial will look in
     /shared/tools/etc/mercurial/hgrc.  Options in these files apply to
     all Mercurial commands executed by any user in any directory.
 
 (Unix)    /etc/mercurial/hgrc.d/*.rc::
 (Unix)    /etc/mercurial/hgrc::
 (Windows) C:\Mercurial\Mercurial.ini::
     Per-system configuration files, for the system on which Mercurial
     is running.  Options in these files apply to all Mercurial
     commands executed by any user in any directory.  Options in these
     files override per-installation options.
 
 (Unix)    $HOME/.hgrc::
 (Windows) C:\Documents and Settings\USERNAME\Mercurial.ini::
 (Windows) $HOME\Mercurial.ini::
     Per-user configuration file, for the user running Mercurial.
     Options in this file apply to all Mercurial commands executed by
     any user in any directory.  Options in this file override
     per-installation and per-system options.
     On Windows system, one of these is chosen exclusively according
     to definition of HOME environment variable.
 
 (Unix, Windows) <repo>/.hg/hgrc::
     Per-repository configuration options that only apply in a
     particular repository.  This file is not version-controlled, and
     will not get transferred during a "clone" operation.  Options in
     this file override options in all other configuration files.
 
 SYNTAX
 ------
 
 A configuration file consists of sections, led by a "[section]" header
 and followed by "name: value" entries; "name=value" is also accepted.
 
     [spam]
     eggs=ham
     green=
        eggs
 
 Each line contains one entry.  If the lines that follow are indented,
 they are treated as continuations of that entry.
 
 Leading whitespace is removed from values.  Empty lines are skipped.
 
 The optional values can contain format strings which refer to other
 values in the same section, or values in a special DEFAULT section.
 
 Lines beginning with "#" or ";" are ignored and may be used to provide
 comments.
 
 SECTIONS
 --------
 
 This section describes the different sections that may appear in a
 Mercurial "hgrc" file, the purpose of each section, its possible
 keys, and their possible values.
 
 decode/encode::
   Filters for transforming files on checkout/checkin. This would
   typically be used for newline processing or other
   localization/canonicalization of files.
 
   Filters consist of a filter pattern followed by a filter command.
   Filter patterns are globs by default, rooted at the repository
   root.  For example, to match any file ending in ".txt" in the root
   directory only, use the pattern "*.txt".  To match any file ending
   in ".c" anywhere in the repository, use the pattern "**.c".
 
   The filter command can start with a specifier, either "pipe:" or
   "tempfile:".  If no specifier is given, "pipe:" is used by default.
 
   A "pipe:" command must accept data on stdin and return the
   transformed data on stdout.
 
   Pipe example:
 
     [encode]
     # uncompress gzip files on checkin to improve delta compression
     # note: not necessarily a good idea, just an example
     *.gz = pipe: gunzip
 
     [decode]
     # recompress gzip files when writing them to the working dir (we
     # can safely omit "pipe:", because it's the default)
     *.gz = gzip
 
   A "tempfile:" command is a template.  The string INFILE is replaced
   with the name of a temporary file that contains the data to be
   filtered by the command.  The string OUTFILE is replaced with the
   name of an empty temporary file, where the filtered data must be
   written by the command.
 
   NOTE: the tempfile mechanism is recommended for Windows systems,
   where the standard shell I/O redirection operators often have
   strange effects.  In particular, if you are doing line ending
   conversion on Windows using the popular dos2unix and unix2dos
   programs, you *must* use the tempfile mechanism, as using pipes will
   corrupt the contents of your files.
 
   Tempfile example:
 
     [encode]
     # convert files to unix line ending conventions on checkin
     **.txt = tempfile: dos2unix -n INFILE OUTFILE
 
     [decode]
     # convert files to windows line ending conventions when writing
     # them to the working dir
     **.txt = tempfile: unix2dos -n INFILE OUTFILE
 
 email::
   Settings for extensions that send email messages.
   from;;
     Optional.  Email address to use in "From" header and SMTP envelope
     of outgoing messages.
   method;;
     Optional.  Method to use to send email messages.  If value is
     "smtp" (default), use SMTP (see section "[mail]" for
     configuration).  Otherwise, use as name of program to run that
     acts like sendmail (takes "-f" option for sender, list of
     recipients on command line, message on stdin).  Normally, setting
     this to "sendmail" or "/usr/sbin/sendmail" is enough to use
     sendmail to send messages.
 
   Email example:
 
     [email]
     from = Joseph User <[e-mail]>
     method = /usr/sbin/sendmail
 
 extensions::
   Mercurial has an extension mechanism for adding new features. To
   enable an extension, create an entry for it in this section.
 
   If you know that the extension is already in Python's search path,
   you can give the name of the module, followed by "=", with nothing
   after the "=".
 
   Otherwise, give a name that you choose, followed by "=", followed by
   the path to the ".py" file (including the file name extension) that
   defines the extension.
 
   Example for ~/.hgrc:
 
     [extensions]
     # (the mq extension will get loaded from mercurial's path)
     hgext.mq =
     # (this extension will get loaded from the file specified)
     myfeature = ~/.hgext/myfeature.py
 
 hooks::
   Commands or Python functions that get automatically executed by
   various actions such as starting or finishing a commit. Multiple
   hooks can be run for the same action by appending a suffix to the
   action. Overriding a site-wide hook can be done by changing its
   value or setting it to an empty string.
 
   Example .hg/hgrc:
 
     [hooks]
     # do not use the site-wide hook
     incoming =
     incoming.email = /my/email/hook
     incoming.autobuild = /my/build/hook
 
   Most hooks are run with environment variables set that give added
   useful information.  For each hook below, the environment variables
   it is passed are listed with names of the form "$HG_foo".
 
   changegroup;;
     Run after a changegroup has been added via push, pull or
     unbundle. ID of the first new changeset is in $HG_NODE.
   commit;;
     Run after a changeset has been created in the local repository.
     ID of the newly created changeset is in $HG_NODE.  Parent
     changeset IDs are in $HG_PARENT1 and $HG_PARENT2.
   incoming;;
     Run after a changeset has been pulled, pushed, or unbundled into
     the local repository.  The ID of the newly arrived changeset is in
     $HG_NODE.
   outgoing;;
     Run after sending changes from local repository to another.  ID of
     first changeset sent is in $HG_NODE.  Source of operation is in
     $HG_SOURCE; see "preoutgoing" hook for description.
   prechangegroup;;
     Run before a changegroup is added via push, pull or unbundle.
     Exit status 0 allows the changegroup to proceed.  Non-zero status
     will cause the push, pull or unbundle to fail.
   precommit;;
     Run before starting a local commit.  Exit status 0 allows the
     commit to proceed.  Non-zero status will cause the commit to fail.
     Parent changeset IDs are in $HG_PARENT1 and $HG_PARENT2.
   preoutgoing;;
     Run before computing changes to send from the local repository to
     another.  Non-zero status will cause failure.  This lets you
     prevent pull over http or ssh.  Also prevents against local pull,
     push (outbound) or bundle commands, but not effective, since you
     can just copy files instead then.  Source of operation is in
     $HG_SOURCE.  If "serve", operation is happening on behalf of
     remote ssh or http repository.  If "push", "pull" or "bundle",
     operation is happening on behalf of repository on same system.
   pretag;;
     Run before creating a tag.  Exit status 0 allows the tag to be
     created.  Non-zero status will cause the tag to fail.  ID of
     changeset to tag is in $HG_NODE.  Name of tag is in $HG_TAG.  Tag
     is local if $HG_LOCAL=1, in repo if $HG_LOCAL=0.
   pretxnchangegroup;;
     Run after a changegroup has been added via push, pull or unbundle,
     but before the transaction has been committed.  Changegroup is
     visible to hook program.  This lets you validate incoming changes
     before accepting them.  Passed the ID of the first new changeset
     in $HG_NODE.  Exit status 0 allows the transaction to commit.
     Non-zero status will cause the transaction to be rolled back and
     the push, pull or unbundle will fail.
   pretxncommit;;
     Run after a changeset has been created but the transaction not yet
     committed.  Changeset is visible to hook program.  This lets you
     validate commit message and changes.  Exit status 0 allows the
     commit to proceed.  Non-zero status will cause the transaction to
     be rolled back.  ID of changeset is in $HG_NODE.  Parent changeset
     IDs are in $HG_PARENT1 and $HG_PARENT2.
   preupdate;;
     Run before updating the working directory.  Exit status 0 allows
     the update to proceed.  Non-zero status will prevent the update.
     Changeset ID of first new parent is in $HG_PARENT1.  If merge, ID
     of second new parent is in $HG_PARENT2.
   tag;;
     Run after a tag is created.  ID of tagged changeset is in
     $HG_NODE.  Name of tag is in $HG_TAG.  Tag is local if
     $HG_LOCAL=1, in repo if $HG_LOCAL=0.
   update;;
     Run after updating the working directory.  Changeset ID of first
     new parent is in $HG_PARENT1.  If merge, ID of second new parent
     is in $HG_PARENT2.  If update succeeded, $HG_ERROR=0.  If update
     failed (e.g. because conflicts not resolved), $HG_ERROR=1.
 
   Note: In earlier releases, the names of hook environment variables
   did not have a "HG_" prefix.  The old unprefixed names are no longer
   provided in the environment.
 
   The syntax for Python hooks is as follows:
 
     hookname = python:modulename.submodule.callable
 
   Python hooks are run within the Mercurial process.  Each hook is
   called with at least three keyword arguments: a ui object (keyword
   "ui"), a repository object (keyword "repo"), and a "hooktype"
   keyword that tells what kind of hook is used.  Arguments listed as
   environment variables above are passed as keyword arguments, with no
   "HG_" prefix, and names in lower case.
 
   A Python hook must return a "true" value to succeed.  Returning a
   "false" value or raising an exception is treated as failure of the
   hook.
 
 http_proxy::
   Used to access web-based Mercurial repositories through a HTTP
   proxy.
   host;;
     Host name and (optional) port of the proxy server, for example
     "myproxy:8000".
   no;;
     Optional.  Comma-separated list of host names that should bypass
     the proxy.
   passwd;;
     Optional.  Password to authenticate with at the proxy server.
   user;;
     Optional.  User name to authenticate with at the proxy server.
 
 smtp::
   Configuration for extensions that need to send email messages.
   host;;
     Optional.  Host name of mail server.  Default: "mail".
   port;;
     Optional.  Port to connect to on mail server.  Default: 25.
   tls;;
     Optional.  Whether to connect to mail server using TLS.  True or
     False.  Default: False.
   username;;
     Optional.  User name to authenticate to SMTP server with.
     If username is specified, password must also be specified.
     Default: none.
   password;;
     Optional.  Password to authenticate to SMTP server with.
     If username is specified, password must also be specified.
     Default: none.
   local_hostname;;
     Optional.  It's the hostname that the sender can use to identify itself
     to the MTA.
 
 paths::
   Assigns symbolic names to repositories.  The left side is the
   symbolic name, and the right gives the directory or URL that is the
   location of the repository.  Default paths can be declared by
- setting the following entries.
+  setting the following entries.
   default;;
     Directory or URL to use when pulling if no source is specified.
     Default is set to repository from which the current repository
     was cloned.
   default-push;;
     Optional.  Directory or URL to use when pushing if no destination
     is specified.
 
+server::
+  Controls generic server settings.
+  uncompressed;;
+    Whether to allow clients to clone a repo using the uncompressed
+    streaming protocol.  This transfers about 40% more data than a
+    regular clone, but uses less memory and CPU on both server and
+    client.  Over a LAN (100Mbps or better) or a very fast WAN, an
+    uncompressed streaming clone is a lot faster (~10x) than a regular
+    clone.  Over most WAN connections (anything slower than about
+    6Mbps), uncompressed streaming is slower, because of the extra
+    data transfer overhead.  Default is False.
+
 ui::
   User interface controls.
   debug;;
     Print debugging information.  True or False.  Default is False.
   editor;;
     The editor to use during a commit.  Default is $EDITOR or "vi".
   ignore;;
     A file to read per-user ignore patterns from. This file should be in
     the same format as a repository-wide .hgignore file. This option
     supports hook syntax, so if you want to specify multiple ignore
     files, you can do so by setting something like
     "ignore.other = ~/.hgignore2". For details of the ignore file
     format, see the hgignore(5) man page.
   interactive;;
     Allow to prompt the user.  True or False.  Default is True.
   logtemplate;;
     Template string for commands that print changesets.
   style;;
     Name of style to use for command output.
   merge;;
     The conflict resolution program to use during a manual merge.
     Default is "hgmerge".
   quiet;;
     Reduce the amount of output printed.  True or False.  Default is False.
   remotecmd;;
     remote command to use for clone/push/pull operations. Default is 'hg'.
   ssh;;
     command to use for SSH connections. Default is 'ssh'.
   timeout;;
     The timeout used when a lock is held (in seconds), a negative value
     means no timeout. Default is 600.
   username;;
     The committer of a changeset created when running "commit".
     Typically a person's name and email address, e.g. "Fred Widget
     <[e-mail]>".  Default is $EMAIL or username@hostname, unless
     username is set to an empty string, which enforces specifying the
     username manually.
   verbose;;
     Increase the amount of output printed.  True or False.  Default is False.
 
 
 web::
   Web interface configuration.
   accesslog;;
     Where to output the access log. Default is stdout.
   address;;
     Interface address to bind to. Default is all.
   allow_archive;;
     List of archive format (bz2, gz, zip) allowed for downloading.
     Default is empty.
   allowbz2;;
     (DEPRECATED) Whether to allow .tar.bz2 downloading of repo revisions.
     Default is false.
   allowgz;;
     (DEPRECATED) Whether to allow .tar.gz downloading of repo revisions.
     Default is false.
   allowpull;;
     Whether to allow pulling from the repository. Default is true.
   allow_push;;
     Whether to allow pushing to the repository.  If empty or not set,
     push is not allowed.  If the special value "*", any remote user
     can push, including unauthenticated users.  Otherwise, the remote
     user must have been authenticated, and the authenticated user name
     must be present in this list (separated by whitespace or ",").
     The contents of the allow_push list are examined after the
     deny_push list.
   allowzip;;
     (DEPRECATED) Whether to allow .zip downloading of repo revisions.
     Default is false. This feature creates temporary files.
   baseurl;;
     Base URL to use when publishing URLs in other locations, so
     third-party tools like email notification hooks can construct URLs.
     Example: "http://hgserver/repos/"
   contact;;
     Name or email address of the person in charge of the repository.
     Default is "unknown".
   deny_push;;
     Whether to deny pushing to the repository.  If empty or not set,
     push is not denied.  If the special value "*", all remote users
     are denied push.  Otherwise, unauthenticated users are all denied,
     and any authenticated user name present in this list (separated by
     whitespace or ",") is also denied.  The contents of the deny_push
     list are examined before the allow_push list.
   description;;
     Textual description of the repository's purpose or contents.
     Default is "unknown".
   errorlog;;
     Where to output the error log. Default is stderr.
   ipv6;;
     Whether to use IPv6. Default is false.
   name;;
     Repository name to use in the web interface. Default is current
     working directory.
   maxchanges;;
     Maximum number of changes to list on the changelog. Default is 10.
   maxfiles;;
     Maximum number of files to list per changeset. Default is 10.
   port;;
     Port to listen on. Default is 8000.
   push_ssl;;
     Whether to require that inbound pushes be transported over SSL to
     prevent password sniffing.  Default is true.
   style;;
     Which template map style to use.
   templates;;
     Where to find the HTML templates. Default is install path.
 
 
 AUTHOR
 ------
 Bryan O'Sullivan <[e-mail]>.
 
 Mercurial was written by Matt Mackall <[e-mail]>.
 
 SEE ALSO
 --------
 hg(1), hgignore(5)
 
 COPYING
 -------
 This manual page is copyright 2005 Bryan O'Sullivan.
 Mercurial is copyright 2005, 2006 Matt Mackall.
 Free use of this software is granted under the terms of the GNU General
 Public License (GPL).

mercurial/commands.py

@@ -1,3521 +1,3528 b''
 # 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
 from node import *
 from i18n import gettext as _
 demandload(globals(), "os re sys signal shutil imp urllib pdb")
 demandload(globals(), "fancyopts ui hg util lock revlog templater bundlerepo")
 demandload(globals(), "fnmatch mdiff random signal tempfile time")
 demandload(globals(), "traceback errno socket version struct atexit sets bz2")
 demandload(globals(), "archival cStringIO changegroup email.Parser")
 demandload(globals(), "hgweb.server sshserver")
 
 class UnknownCommand(Exception):
     """Exception raised if command is not in the command table."""
 class AmbiguousCommand(Exception):
     """Exception raised if command shortcut matches more than one command."""
 
 def bail_if_changed(repo):
     modified, added, removed, deleted, unknown = repo.changes()
     if modified or added or removed or deleted:
         raise util.Abort(_("outstanding uncommitted changes"))
 
 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, pats=[], opts={}, head=''):
     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']]
         cwd = ''
     return util.cmdmatcher(repo.root, cwd, pats or ['.'], opts.get('include'),
                            opts.get('exclude'), head)
 
 def makewalk(repo, pats, opts, node=None, head='', badmatch=None):
     files, matchfn, anypats = matchpats(repo, pats, opts, head)
     exact = dict(zip(files, files))
     def walk():
         for src, fn in repo.walk(node=node, files=files, match=matchfn,
                                  badmatch=badmatch):
             yield src, fn, util.pathto(repo.getcwd(), fn), fn in exact
     return files, matchfn, walk()
 
 def walk(repo, pats, opts, node=None, head='', badmatch=None):
     files, matchfn, results = makewalk(repo, pats, opts, node, head, badmatch)
     for r in results:
         yield r
 
 def walkchangerevs(ui, repo, pats, opts):
     '''Iterate over files and the revs they changed in.
 
     Callers most commonly need to iterate backwards over the history
     it is interested in.  Doing so has awful (quadratic-looking)
     performance, so we use iterators in a "windowed" way.
 
     We walk a window of revisions in the desired order.  Within the
     window, we first walk forwards to gather data, then in the desired
     order (usually backwards) to display it.
 
     This function returns an (iterator, getchange, matchfn) tuple.  The
     getchange function returns the changelog entry for a numeric
     revision.  The iterator yields 3-tuples.  They will be of one of
     the following forms:
 
     "window", incrementing, lastrev: stepping through a window,
     positive if walking forwards through revs, last rev in the
     sequence iterated over - use to reset state for the current window
 
     "add", rev, fns: out-of-order traversal of the given file names
     fns, which changed during revision rev - use to gather data for
     possible display
 
     "iter", rev, None: in-order traversal of the revs earlier iterated
     over with "add" - use to display data'''
 
     def increasing_windows(start, end, windowsize=8, sizelimit=512):
         if start < end:
             while start < end:
                 yield start, min(windowsize, end-start)
                 start += windowsize
                 if windowsize < sizelimit:
                     windowsize *= 2
         else:
             while start > end:
                 yield start, min(windowsize, start-end-1)
                 start -= windowsize
                 if windowsize < sizelimit:
                     windowsize *= 2
 
 
     files, matchfn, anypats = matchpats(repo, pats, opts)
 
     if repo.changelog.count() == 0:
         return [], False, matchfn
 
     revs = map(int, revrange(ui, repo, opts['rev'] or ['tip:0']))
     wanted = {}
     slowpath = anypats
     fncache = {}
 
     chcache = {}
     def getchange(rev):
         ch = chcache.get(rev)
         if ch is None:
             chcache[rev] = ch = repo.changelog.read(repo.lookup(str(rev)))
         return ch
 
     if not slowpath and not files:
         # No files, no patterns.  Display all revs.
         wanted = dict(zip(revs, revs))
     if not slowpath:
         # Only files, no patterns.  Check the history of each file.
         def filerevgen(filelog):
+            cl_count = repo.changelog.count()
             for i, window in increasing_windows(filelog.count()-1, -1):
                 revs = []
                 for j in xrange(i - window, i + 1):
                     revs.append(filelog.linkrev(filelog.node(j)))
                 revs.reverse()
                 for rev in revs:
-                    yield rev
+                    # only yield rev for which we have the changelog, it can
+                    # happen while doing "hg log" during a pull or commit
+                    if rev < cl_count:
+                        yield rev
 
         minrev, maxrev = min(revs), max(revs)
         for file_ in files:
             filelog = repo.file(file_)
             # A zero count may be a directory or deleted file, so
             # try to find matching entries on the slow path.
             if filelog.count() == 0:
                 slowpath = True
                 break
             for rev in filerevgen(filelog):
                 if rev <= maxrev:
                     if rev < minrev:
                         break
                     fncache.setdefault(rev, [])
                     fncache[rev].append(file_)
                     wanted[rev] = 1
     if slowpath:
         # The slow path checks files modified in every changeset.
         def changerevgen():
             for i, window in increasing_windows(repo.changelog.count()-1, -1):
                 for j in xrange(i - window, i + 1):
                     yield j, getchange(j)[3]
 
         for rev, changefiles in changerevgen():
             matches = filter(matchfn, changefiles)
             if matches:
                 fncache[rev] = matches
                 wanted[rev] = 1
 
     def iterate():
         for i, window in increasing_windows(0, len(revs)):
             yield 'window', revs[0] < revs[-1], revs[-1]
             nrevs = [rev for rev in revs[i:i+window]
                      if rev in wanted]
             srevs = list(nrevs)
             srevs.sort()
             for rev in srevs:
                 fns = fncache.get(rev) or filter(matchfn, getchange(rev)[3])
                 yield 'add', rev, fns
             for rev in nrevs:
                 yield 'iter', rev, None
     return iterate(), getchange, matchfn
 
 revrangesep = ':'
 
 def revfix(repo, val, defval):
     '''turn user-level id of changeset into rev number.
     user-level id can be tag, changeset, rev number, or negative rev
     number relative to number of revs (-1 is tip, etc).'''
     if not val:
         return defval
     try:
         num = int(val)
         if str(num) != val:
             raise ValueError
         if num < 0:
             num += repo.changelog.count()
         if num < 0:
             num = 0
         elif num >= repo.changelog.count():
             raise ValueError
     except ValueError:
         try:
             num = repo.changelog.rev(repo.lookup(val))
         except KeyError:
             raise util.Abort(_('invalid revision identifier %s'), val)
     return num
 
 def revpair(ui, repo, revs):
     '''return pair of nodes, given list of revisions. second item can
     be None, meaning use working dir.'''
     if not revs:
         return repo.dirstate.parents()[0], None
     end = None
     if len(revs) == 1:
         start = revs[0]
         if revrangesep in start:
             start, end = start.split(revrangesep, 1)
             start = revfix(repo, start, 0)
             end = revfix(repo, end, repo.changelog.count() - 1)
         else:
             start = revfix(repo, start, None)
     elif len(revs) == 2:
         if revrangesep in revs[0] or revrangesep in revs[1]:
             raise util.Abort(_('too many revisions specified'))
         start = revfix(repo, revs[0], None)
         end = revfix(repo, revs[1], None)
     else:
         raise util.Abort(_('too many revisions specified'))
     if end is not None: end = repo.lookup(str(end))
     return repo.lookup(str(start)), end
 
 def revrange(ui, repo, revs):
     """Yield revision as strings from a list of revision specifications."""
     seen = {}
     for spec in revs:
         if revrangesep in spec:
             start, end = spec.split(revrangesep, 1)
             start = revfix(repo, start, 0)
             end = revfix(repo, end, repo.changelog.count() - 1)
             step = start > end and -1 or 1
             for rev in xrange(start, end+step, step):
                 if rev in seen:
                     continue
                 seen[rev] = 1
                 yield str(rev)
         else:
             rev = revfix(repo, spec, None)
             if rev in seen:
                 continue
             seen[rev] = 1
             yield str(rev)
 
 def make_filename(repo, pat, node,
                   total=None, seqno=None, revwidth=None, pathname=None):
     node_expander = {
         'H': lambda: hex(node),
         'R': lambda: str(repo.changelog.rev(node)),
         'h': lambda: short(node),
         }
     expander = {
         '%': lambda: '%',
         'b': lambda: os.path.basename(repo.root),
         }
 
     try:
         if node:
             expander.update(node_expander)
         if node and revwidth is not None:
             expander['r'] = lambda: str(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)))
         if pathname is not None:
             expander['s'] = lambda: os.path.basename(pathname)
             expander['d'] = lambda: os.path.dirname(pathname) or '.'
             expander['p'] = lambda: pathname
 
         newname = []
         patlen = len(pat)
         i = 0
         while i < patlen:
             c = pat[i]
             if c == '%':
                 i += 1
                 c = pat[i]
                 c = expander[c]()
             newname.append(c)
             i += 1
         return ''.join(newname)
     except KeyError, inst:
         raise util.Abort(_("invalid format spec '%%%s' in output file name"),
                     inst.args[0])
 
 def make_file(repo, pat, node=None,
               total=None, seqno=None, revwidth=None, mode='wb', pathname=None):
     if not pat or pat == '-':
         return 'w' in mode and sys.stdout or sys.stdin
     if hasattr(pat, 'write') and 'w' in mode:
         return pat
     if hasattr(pat, 'read') and 'r' in mode:
         return pat
     return open(make_filename(repo, pat, node, total, seqno, revwidth,
                               pathname),
                 mode)
 
 def write_bundle(cg, filename=None, compress=True):
     """Write a bundle file and return its filename.
 
     Existing files will not be overwritten.
     If no filename is specified, a temporary file is created.
     bz2 compression can be turned off.
     The bundle file will be deleted in case of errors.
     """
     class nocompress(object):
         def compress(self, x):
             return x
         def flush(self):
             return ""
 
     fh = None
     cleanup = None
     try:
         if filename:
             if os.path.exists(filename):
                 raise util.Abort(_("file '%s' already exists"), filename)
             fh = open(filename, "wb")
         else:
             fd, filename = tempfile.mkstemp(prefix="hg-bundle-", suffix=".hg")
             fh = os.fdopen(fd, "wb")
         cleanup = filename
 
         if compress:
             fh.write("HG10")
             z = bz2.BZ2Compressor(9)
         else:
             fh.write("HG10UN")
             z = nocompress()
         # parse the changegroup data, otherwise we will block
         # in case of sshrepo because we don't know the end of the stream
 
         # an empty chunkiter is the end of the changegroup
         empty = False
         while not empty:
             empty = True
             for chunk in changegroup.chunkiter(cg):
                 empty = False
                 fh.write(z.compress(changegroup.genchunk(chunk)))
             fh.write(z.compress(changegroup.closechunk()))
         fh.write(z.flush())
         cleanup = None
         return filename
     finally:
         if fh is not None:
             fh.close()
         if cleanup is not None:
             os.unlink(cleanup)
 
 def dodiff(fp, ui, repo, node1, node2, files=None, match=util.always,
            changes=None, text=False, opts={}):
     if not node1:
         node1 = repo.dirstate.parents()[0]
     # reading the data for node1 early allows it to play nicely
     # with repo.changes and the revlog cache.
     change = repo.changelog.read(node1)
     mmap = repo.manifest.read(change[0])
     date1 = util.datestr(change[2])
 
     if not changes:
         changes = repo.changes(node1, node2, files, match=match)
     modified, added, removed, deleted, unknown = changes
     if files:
         modified, added, removed = map(lambda x: filterfiles(files, x),
                                        (modified, added, removed))
 
     if not modified and not added and not removed:
         return
 
     if node2:
         change = repo.changelog.read(node2)
         mmap2 = repo.manifest.read(change[0])
         _date2 = util.datestr(change[2])
         def date2(f):
             return _date2
         def read(f):
             return repo.file(f).read(mmap2[f])
     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)
 
     if ui.quiet:
         r = None
     else:
         hexfunc = ui.verbose and hex or short
         r = [hexfunc(node) for node in [node1, node2] if node]
 
     diffopts = ui.diffopts()
     showfunc = opts.get('show_function') or diffopts['showfunc']
     ignorews = opts.get('ignore_all_space') or diffopts['ignorews']
     ignorewsamount = opts.get('ignore_space_change') or \
                      diffopts['ignorewsamount']
     ignoreblanklines = opts.get('ignore_blank_lines') or \
                      diffopts['ignoreblanklines']
     for f in modified:
         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), f, r, text=text,
                                showfunc=showfunc, ignorews=ignorews,
                                ignorewsamount=ignorewsamount,
                                ignoreblanklines=ignoreblanklines))
     for f in added:
         to = None
         tn = read(f)
         fp.write(mdiff.unidiff(to, date1, tn, date2(f), f, r, text=text,
                                showfunc=showfunc, ignorews=ignorews,
                                ignorewsamount=ignorewsamount,
                                ignoreblanklines=ignoreblanklines))
     for f in removed:
         to = repo.file(f).read(mmap[f])
         tn = None
         fp.write(mdiff.unidiff(to, date1, tn, date2(f), f, r, text=text,
                                showfunc=showfunc, ignorews=ignorews,
                                ignorewsamount=ignorewsamount,
                                ignoreblanklines=ignoreblanklines))
 
 def trimuser(ui, name, rev, revcache):
     """trim the name of the user who committed a change"""
     user = revcache.get(rev)
     if user is None:
         user = revcache[rev] = ui.shortuser(name)
     return user
 
 class changeset_printer(object):
     '''show changeset information when templating not requested.'''
 
     def __init__(self, ui, repo):
         self.ui = ui
         self.repo = repo
 
     def show(self, rev=0, changenode=None, brinfo=None):
         '''show a single changeset or file revision'''
         log = self.repo.changelog
         if changenode is None:
             changenode = log.node(rev)
         elif not rev:
             rev = log.rev(changenode)
 
         if self.ui.quiet:
             self.ui.write("%d:%s\n" % (rev, short(changenode)))
             return
 
         changes = log.read(changenode)
         date = util.datestr(changes[2])
 
         parents = [(log.rev(p), self.ui.verbose and hex(p) or short(p))
                    for p in log.parents(changenode)
                    if self.ui.debugflag or p != nullid]
         if (not self.ui.debugflag and len(parents) == 1 and
             parents[0][0] == rev-1):
             parents = []
 
         if self.ui.verbose:
             self.ui.write(_("changeset:   %d:%s\n") % (rev, hex(changenode)))
         else:
             self.ui.write(_("changeset:   %d:%s\n") % (rev, short(changenode)))
 
         for tag in self.repo.nodetags(changenode):
             self.ui.status(_("tag:         %s\n") % tag)
         for parent in parents:
             self.ui.write(_("parent:      %d:%s\n") % parent)
 
         if brinfo and changenode in brinfo:
             br = brinfo[changenode]
             self.ui.write(_("branch:      %s\n") % " ".join(br))
 
         self.ui.debug(_("manifest:    %d:%s\n") %
                       (self.repo.manifest.rev(changes[0]), hex(changes[0])))
         self.ui.status(_("user:        %s\n") % changes[1])
         self.ui.status(_("date:        %s\n") % date)
 
         if self.ui.debugflag:
             files = self.repo.changes(log.parents(changenode)[0], changenode)
             for key, value in zip([_("files:"), _("files+:"), _("files-:")],
                                   files):
                 if value:
                     self.ui.note("%-12s %s\n" % (key, " ".join(value)))
         else:
             self.ui.note(_("files:       %s\n") % " ".join(changes[3]))
 
         description = changes[4].strip()
         if description:
             if self.ui.verbose:
                 self.ui.status(_("description:\n"))
                 self.ui.status(description)
                 self.ui.status("\n\n")
             else:
                 self.ui.status(_("summary:     %s\n") %
                                description.splitlines()[0])
         self.ui.status("\n")
 
 def show_changeset(ui, repo, opts):
     '''show one changeset.  uses template or regular display.  caller
     can pass in 'style' and 'template' options in opts.'''
 
     tmpl = opts.get('template')
     if tmpl:
         tmpl = templater.parsestring(tmpl, quoted=False)
     else:
         tmpl = ui.config('ui', 'logtemplate')
         if tmpl: tmpl = templater.parsestring(tmpl)
     mapfile = opts.get('style') or ui.config('ui', 'style')
     if tmpl or mapfile:
         if mapfile:
             if not os.path.isfile(mapfile):
                 mapname = templater.templatepath('map-cmdline.' + mapfile)
                 if not mapname: mapname = templater.templatepath(mapfile)
                 if mapname: mapfile = mapname
         try:
             t = templater.changeset_templater(ui, repo, mapfile)
         except SyntaxError, inst:
             raise util.Abort(inst.args[0])
         if tmpl: t.use_template(tmpl)
         return t
     return changeset_printer(ui, repo)
 
 def 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, name=None, with_version=False):
     """show help for a command, extension, or list of commands
 
     With no arguments, print a list of commands and short help.
 
     Given a command name, print help for that command.
 
     Given an extension name, print help for that extension, and the
     commands it provides."""
     option_lists = []
 
     def helpcmd(name):
         if with_version:
             show_version(ui)
             ui.write('\n')
         aliases, i = findcmd(name)
         # synopsis
         ui.write("%s\n\n" % i[2])
 
         # description
         doc = i[0].__doc__
         if not doc:
             doc = _("(No help text available)")
         if ui.quiet:
             doc = doc.splitlines(0)[0]
         ui.write("%s\n" % doc.rstrip())
 
         if not ui.quiet:
             # aliases
             if len(aliases) > 1:
                 ui.write(_("\naliases: %s\n") % ', '.join(aliases[1:]))
 
             # options
             if i[1]:
                 option_lists.append(("options", i[1]))
 
     def helplist(select=None):
         h = {}
         cmds = {}
         for c, e in table.items():
             f = c.split("|", 1)[0]
             if select and not select(f):
                 continue
             if name == "shortlist" and not f.startswith("^"):
                 continue
             f = f.lstrip("^")
             if not ui.debugflag and f.startswith("debug"):
                 continue
             doc = e[0].__doc__
             if not doc:
                 doc = _("(No help text available)")
             h[f] = doc.splitlines(0)[0].rstrip()
             cmds[f] = c.lstrip("^")
 
         fns = h.keys()
         fns.sort()
         m = max(map(len, fns))
         for f in fns:
             if ui.verbose:
                 commands = cmds[f].replace("|",", ")
                 ui.write(" %s:\n      %s\n"%(commands, h[f]))
             else:
                 ui.write(' %-*s   %s\n' % (m, f, h[f]))
 
     def helpext(name):
         try:
             mod = findext(name)
         except KeyError:
             raise UnknownCommand(name)
 
         doc = (mod.__doc__ or _('No help text available')).splitlines(0)
         ui.write(_('%s extension - %s\n') % (name.split('.')[-1], doc[0]))
         for d in doc[1:]:
             ui.write(d, '\n')
 
         ui.status('\n')
         if ui.verbose:
             ui.status(_('list of commands:\n\n'))
         else:
             ui.status(_('list of commands (use "hg help -v %s" '
                         'to show aliases and global options):\n\n') % name)
 
         modcmds = dict.fromkeys([c.split('|', 1)[0] for c in mod.cmdtable])
         helplist(modcmds.has_key)
 
     if name and name != 'shortlist':
         try:
             helpcmd(name)
         except UnknownCommand:
             helpext(name)
 
     else:
         # program name
         if ui.verbose or with_version:
             show_version(ui)
         else:
             ui.status(_("Mercurial Distributed SCM\n"))
         ui.status('\n')
 
         # list of commands
         if name == "shortlist":
             ui.status(_('basic commands (use "hg help" '
                         'for the full list or option "-v" for details):\n\n'))
         elif ui.verbose:
             ui.status(_('list of commands:\n\n'))
         else:
             ui.status(_('list of commands (use "hg help -v" '
                         'to show aliases and global options):\n\n'))
 
         helplist()
 
     # global options
     if ui.verbose:
         option_lists.append(("global options", globalopts))
 
     # list all option lists
     opt_output = []
     for title, options in option_lists:
         opt_output.append(("\n%s:\n" % title, None))
         for shortopt, longopt, default, desc in options:
             opt_output.append(("%2s%s" % (shortopt and "-%s" % shortopt,
                                           longopt and " --%s" % longopt),
                                "%s%s" % (desc,
                                          default
                                          and _(" (default: %s)") % default
                                          or "")))
 
     if opt_output:
         opts_len = max([len(line[0]) for line in opt_output if line[1]])
         for first, second in opt_output:
             if second:
                 ui.write(" %-*s  %s\n" % (opts_len, first, second))
             else:
                 ui.write("%s\n" % first)
 
 # Commands start here, listed alphabetically
 
 def add(ui, repo, *pats, **opts):
     """add the specified files on the next commit
 
     Schedule files to be version controlled and added to the repository.
 
     The files will be added to the repository at the next commit.
 
     If no names are given, add all files in the repository.
     """
 
     names = []
     for src, abs, rel, exact in walk(repo, pats, opts):
         if exact:
             if ui.verbose:
                 ui.status(_('adding %s\n') % rel)
             names.append(abs)
         elif repo.dirstate.state(abs) == '?':
             ui.status(_('adding %s\n') % rel)
             names.append(abs)
     if not opts.get('dry_run'):
         repo.add(names)
 
 def addremove(ui, repo, *pats, **opts):
     """add all new files, delete all missing files (DEPRECATED)
 
     (DEPRECATED)
     Add all new files and remove all missing files from the repository.
 
     New files are ignored if they match any of the patterns in .hgignore. As
     with add, these changes take effect at the next commit.
 
     This command is now deprecated and will be removed in a future
     release. Please use add and remove --after instead.
     """
     ui.warn(_('(the addremove command is deprecated; use add and remove '
               '--after instead)\n'))
     return addremove_lock(ui, repo, pats, opts)
 
 def addremove_lock(ui, repo, pats, opts, wlock=None):
     add, remove = [], []
     for src, abs, rel, exact in walk(repo, pats, opts):
         if src == 'f' and repo.dirstate.state(abs) == '?':
             add.append(abs)
             if ui.verbose or not exact:
                 ui.status(_('adding %s\n') % ((pats and rel) or abs))
         if repo.dirstate.state(abs) != 'r' and not os.path.exists(rel):
             remove.append(abs)
             if ui.verbose or not exact:
                 ui.status(_('removing %s\n') % ((pats and rel) or abs))
     if not opts.get('dry_run'):
         repo.add(add, wlock=wlock)
         repo.remove(remove, wlock=wlock)
 
 def annotate(ui, repo, *pats, **opts):
     """show changeset information per file line
 
     List changes in files, showing the revision id responsible for each line
 
     This command is useful to discover who did a change or when a change took
     place.
 
     Without the -a option, annotate will avoid processing files it
     detects as binary. With -a, annotate will generate an annotation
     anyway, probably with undesirable results.
     """
     def getnode(rev):
         return short(repo.changelog.node(rev))
 
     ucache = {}
     def getname(rev):
         try:
             return ucache[rev]
         except:
             u = trimuser(ui, repo.changectx(rev).user(), rev, ucache)
             ucache[rev] = u
             return u
 
     dcache = {}
     def getdate(rev):
         datestr = dcache.get(rev)
         if datestr is None:
             datestr = dcache[rev] = util.datestr(repo.changectx(rev).date())
         return datestr
 
     if not pats:
         raise util.Abort(_('at least one file name or pattern required'))
 
     opmap = [['user', getname], ['number', str], ['changeset', getnode],
              ['date', getdate]]
     if not opts['user'] and not opts['changeset'] and not opts['date']:
         opts['number'] = 1
 
     ctx = repo.changectx(opts['rev'] or repo.dirstate.parents()[0])
 
     for src, abs, rel, exact in walk(repo, pats, opts, node=ctx.node()):
         fctx = ctx.filectx(abs)
         if not opts['text'] and util.binary(fctx.data()):
             ui.write(_("%s: binary file\n") % ((pats and rel) or abs))
             continue
 
         lines = fctx.annotate()
         pieces = []
 
         for o, f in opmap:
             if opts[o]:
                 l = [f(n) for n, dummy in lines]
                 if l:
                     m = max(map(len, l))
                     pieces.append(["%*s" % (m, x) for x in l])
 
         if pieces:
             for p, l in zip(zip(*pieces), lines):
                 ui.write("%s: %s" % (" ".join(p), l[1]))
 
 def archive(ui, repo, dest, **opts):
     '''create unversioned archive of a repository revision
 
     By default, the revision used is the parent of the working
     directory; use "-r" to specify a different revision.
 
     To specify the type of archive to create, use "-t".  Valid
     types are:
 
     "files" (default): a directory full of files
     "tar": tar archive, uncompressed
     "tbz2": tar archive, compressed using bzip2
     "tgz": tar archive, compressed using gzip
     "uzip": zip archive, uncompressed
     "zip": zip archive, compressed using deflate
 
     The exact name of the destination archive or directory is given
     using a format string; see "hg help export" for details.
 
     Each member added to an archive file has a directory prefix
     prepended.  Use "-p" to specify a format string for the prefix.
     The default is the basename of the archive, with suffixes removed.
     '''
 
     if opts['rev']:
         node = repo.lookup(opts['rev'])
     else:
         node, p2 = repo.dirstate.parents()
         if p2 != nullid:
             raise util.Abort(_('uncommitted merge - please provide a '
                                'specific revision'))
 
     dest = make_filename(repo, dest, node)
     if os.path.realpath(dest) == repo.root:
         raise util.Abort(_('repository root cannot be destination'))
     dummy, matchfn, dummy = matchpats(repo, [], opts)
     kind = opts.get('type') or 'files'
     prefix = opts['prefix']
     if dest == '-':
         if kind == 'files':
             raise util.Abort(_('cannot archive plain files to stdout'))
         dest = sys.stdout
         if not prefix: prefix = os.path.basename(repo.root) + '-%h'
     prefix = make_filename(repo, prefix, node)
     archival.archive(repo, dest, node, kind, not opts['no_decode'],
                      matchfn, prefix)
 
 def backout(ui, repo, rev, **opts):
     '''reverse effect of earlier changeset
 
     Commit the backed out changes as a new changeset.  The new
     changeset is a child of the backed out changeset.
 
     If you back out a changeset other than the tip, a new head is
     created.  This head is the parent of the working directory.  If
     you back out an old changeset, your working directory will appear
     old after the backout.  You should merge the backout changeset
     with another head.
 
     The --merge option remembers the parent of the working directory
     before starting the backout, then merges the new head with that
     changeset afterwards.  This saves you from doing the merge by
     hand.  The result of this merge is not committed, as for a normal
     merge.'''
 
     bail_if_changed(repo)
     op1, op2 = repo.dirstate.parents()
     if op2 != nullid:
         raise util.Abort(_('outstanding uncommitted merge'))
     node = repo.lookup(rev)
     p1, p2 = repo.changelog.parents(node)
     if p1 == nullid:
         raise util.Abort(_('cannot back out a change with no parents'))
     if p2 != nullid:
         if not opts['parent']:
             raise util.Abort(_('cannot back out a merge changeset without '
                                '--parent'))
         p = repo.lookup(opts['parent'])
         if p not in (p1, p2):
             raise util.Abort(_('%s is not a parent of %s' %
                                (short(p), short(node))))
         parent = p
     else:
         if opts['parent']:
             raise util.Abort(_('cannot use --parent on non-merge changeset'))
         parent = p1
     repo.update(node, force=True, show_stats=False)
     revert_opts = opts.copy()
     revert_opts['rev'] = hex(parent)
     revert(ui, repo, **revert_opts)
     commit_opts = opts.copy()
     commit_opts['addremove'] = False
     if not commit_opts['message'] and not commit_opts['logfile']:
         commit_opts['message'] = _("Backed out changeset %s") % (hex(node))
         commit_opts['force_editor'] = True
     commit(ui, repo, **commit_opts)
     def nice(node):
         return '%d:%s' % (repo.changelog.rev(node), short(node))
     ui.status(_('changeset %s backs out changeset %s\n') %
               (nice(repo.changelog.tip()), nice(node)))
     if op1 != node:
         if opts['merge']:
             ui.status(_('merging with changeset %s\n') % nice(op1))
             doupdate(ui, repo, hex(op1), **opts)
         else:
             ui.status(_('the backout changeset is a new head - '
                         'do not forget to merge\n'))
             ui.status(_('(use "backout -m" if you want to auto-merge)\n'))
 
 def bundle(ui, repo, fname, dest=None, **opts):
     """create a changegroup file
 
     Generate a compressed changegroup file collecting all changesets
     not found in the other repository.
 
     This file can then be transferred using conventional means and
     applied to another repository with the unbundle command. This is
     useful when native push and pull are not available or when
     exporting an entire repository is undesirable. The standard file
     extension is ".hg".
 
     Unlike import/export, this exactly preserves all changeset
     contents including permissions, rename data, and revision history.
     """
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     other = hg.repository(ui, dest)
     o = repo.findoutgoing(other, force=opts['force'])
     cg = repo.changegroup(o, 'bundle')
     write_bundle(cg, fname)
 
 def cat(ui, repo, file1, *pats, **opts):
     """output the latest or given revisions of files
 
     Print the specified files as they were at the given revision.
     If no revision is given then the tip is used.
 
     Output may be to a file, in which case the name of the file is
     given using a format string.  The formatting rules are the same as
     for the export command, with the following additions:
 
     %s   basename of file being printed
     %d   dirname of file being printed, or '.' if in repo root
     %p   root-relative path name of file being printed
     """
     ctx = repo.changectx(opts['rev'] or -1)
     for src, abs, rel, exact in walk(repo, (file1,) + pats, opts, ctx.node()):
         fp = make_file(repo, opts['output'], ctx.node(), pathname=abs)
         fp.write(ctx.filectx(abs).data())
 
 def clone(ui, source, dest=None, **opts):
     """make a copy of an existing repository
 
     Create a copy of an existing repository in a new directory.
 
     If no destination directory name is specified, it defaults to the
     basename of the source.
 
     The location of the source is added to the new repository's
     .hg/hgrc file, as the default to be used for future pulls.
 
     For efficiency, hardlinks are used for cloning whenever the source
     and destination are on the same filesystem.  Some filesystems,
     such as AFS, implement hardlinking incorrectly, but do not report
     errors.  In these cases, use the --pull option to avoid
     hardlinking.
 
     See pull for valid source format details.
 
     It is possible to specify an ssh:// URL as the destination, but no
     .hg/hgrc will be created on the remote side. Look at the help text
     for the pull command for important details about ssh:// URLs.
     """
     ui.setconfig_remoteopts(**opts)
     hg.clone(ui, ui.expandpath(source), dest,
              pull=opts['pull'],
-             stream=opts['stream'],
+             stream=opts['uncompressed'],
              rev=opts['rev'],
              update=not opts['noupdate'])
 
 def commit(ui, repo, *pats, **opts):
     """commit the specified files or all outstanding changes
 
     Commit changes to the given files into the repository.
 
     If a list of files is omitted, all changes reported by "hg status"
     will be committed.
 
     If no commit message is specified, the editor configured in your hgrc
     or in the EDITOR environment variable is started to enter a message.
     """
     message = opts['message']
     logfile = opts['logfile']
 
     if message and logfile:
         raise util.Abort(_('options --message and --logfile are mutually '
                            'exclusive'))
     if not message and logfile:
         try:
             if logfile == '-':
                 message = sys.stdin.read()
             else:
                 message = open(logfile).read()
         except IOError, inst:
             raise util.Abort(_("can't read commit message '%s': %s") %
                              (logfile, inst.strerror))
 
     if opts['addremove']:
         addremove_lock(ui, repo, pats, opts)
     fns, match, anypats = matchpats(repo, pats, opts)
     if pats:
         modified, added, removed, deleted, unknown = (
             repo.changes(files=fns, match=match))
         files = modified + added + removed
     else:
         files = []
     try:
         repo.commit(files, message, opts['user'], opts['date'], match,
                     force_editor=opts.get('force_editor'))
     except ValueError, inst:
         raise util.Abort(str(inst))
 
 def docopy(ui, repo, pats, opts, wlock):
     # called with the repo lock held
     cwd = repo.getcwd()
     errors = 0
     copied = []
     targets = {}
 
     def okaytocopy(abs, rel, exact):
         reasons = {'?': _('is not managed'),
                    'a': _('has been marked for add'),
                    'r': _('has been marked for remove')}
         state = repo.dirstate.state(abs)
         reason = reasons.get(state)
         if reason:
             if state == 'a':
                 origsrc = repo.dirstate.copied(abs)
                 if origsrc is not None:
                     return origsrc
             if exact:
                 ui.warn(_('%s: not copying - file %s\n') % (rel, reason))
         else:
             return abs
 
     def copy(origsrc, abssrc, relsrc, target, exact):
         abstarget = util.canonpath(repo.root, cwd, target)
         reltarget = util.pathto(cwd, abstarget)
         prevsrc = targets.get(abstarget)
         if prevsrc is not None:
             ui.warn(_('%s: not overwriting - %s collides with %s\n') %
                     (reltarget, abssrc, prevsrc))
             return
         if (not opts['after'] and os.path.exists(reltarget) or
             opts['after'] and repo.dirstate.state(abstarget) not in '?r'):
             if not opts['force']:
                 ui.warn(_('%s: not overwriting - file exists\n') %
                         reltarget)
                 return
             if not opts['after'] and not opts.get('dry_run'):
                 os.unlink(reltarget)
         if opts['after']:
             if not os.path.exists(reltarget):
                 return
         else:
             targetdir = os.path.dirname(reltarget) or '.'
             if not os.path.isdir(targetdir) and not opts.get('dry_run'):
                 os.makedirs(targetdir)
             try:
                 restore = repo.dirstate.state(abstarget) == 'r'
                 if restore and not opts.get('dry_run'):
                     repo.undelete([abstarget], wlock)
                 try:
                     if not opts.get('dry_run'):
                         shutil.copyfile(relsrc, reltarget)
                         shutil.copymode(relsrc, reltarget)
                     restore = False
                 finally:
                     if restore:
                         repo.remove([abstarget], wlock)
             except shutil.Error, inst:
                 raise util.Abort(str(inst))
             except IOError, inst:
                 if inst.errno == errno.ENOENT:
                     ui.warn(_('%s: deleted in working copy\n') % relsrc)
                 else:
                     ui.warn(_('%s: cannot copy - %s\n') %
                             (relsrc, inst.strerror))
                     errors += 1
                     return
         if ui.verbose or not exact:
             ui.status(_('copying %s to %s\n') % (relsrc, reltarget))
         targets[abstarget] = abssrc
         if abstarget != origsrc and not opts.get('dry_run'):
             repo.copy(origsrc, abstarget, wlock)
         copied.append((abssrc, relsrc, exact))
 
     def targetpathfn(pat, dest, srcs):
         if os.path.isdir(pat):
             abspfx = util.canonpath(repo.root, cwd, pat)
             if destdirexists:
                 striplen = len(os.path.split(abspfx)[0])
             else:
                 striplen = len(abspfx)
             if striplen:
                 striplen += len(os.sep)
             res = lambda p: os.path.join(dest, p[striplen:])
         elif destdirexists:
             res = lambda p: os.path.join(dest, os.path.basename(p))
         else:
             res = lambda p: dest
         return res
 
     def targetpathafterfn(pat, dest, srcs):
         if util.patkind(pat, None)[0]:
             # a mercurial pattern
             res = lambda p: os.path.join(dest, os.path.basename(p))
         else:
             abspfx = util.canonpath(repo.root, cwd, pat)
             if len(abspfx) < len(srcs[0][0]):
                 # A directory. Either the target path contains the last
                 # component of the source path or it does not.
                 def evalpath(striplen):
                     score = 0
                     for s in srcs:
                         t = os.path.join(dest, s[0][striplen:])
                         if os.path.exists(t):
                             score += 1
                     return score
 
                 striplen = len(abspfx)
                 if striplen:
                     striplen += len(os.sep)
                 if os.path.isdir(os.path.join(dest, os.path.split(abspfx)[1])):
                     score = evalpath(striplen)
                     striplen1 = len(os.path.split(abspfx)[0])
                     if striplen1:
                         striplen1 += len(os.sep)
                     if evalpath(striplen1) > score:
                         striplen = striplen1
                 res = lambda p: os.path.join(dest, p[striplen:])
             else:
                 # a file
                 if destdirexists:
                     res = lambda p: os.path.join(dest, os.path.basename(p))
                 else:
                     res = lambda p: dest
         return res
 
 
     pats = list(pats)
     if not pats:
         raise util.Abort(_('no source or destination specified'))
     if len(pats) == 1:
         raise util.Abort(_('no destination specified'))
     dest = pats.pop()
     destdirexists = os.path.isdir(dest)
     if (len(pats) > 1 or util.patkind(pats[0], None)[0]) and not destdirexists:
         raise util.Abort(_('with multiple sources, destination must be an '
                          'existing directory'))
     if opts['after']:
         tfn = targetpathafterfn
     else:
         tfn = targetpathfn
     copylist = []
     for pat in pats:
         srcs = []
         for tag, abssrc, relsrc, exact in walk(repo, [pat], opts):
             origsrc = okaytocopy(abssrc, relsrc, exact)
             if origsrc:
                 srcs.append((origsrc, abssrc, relsrc, exact))
         if not srcs:
             continue
         copylist.append((tfn(pat, dest, srcs), srcs))
     if not copylist:
         raise util.Abort(_('no files to copy'))
 
     for targetpath, srcs in copylist:
         for origsrc, abssrc, relsrc, exact in srcs:
             copy(origsrc, abssrc, relsrc, targetpath(abssrc), exact)
 
     if errors:
         ui.warn(_('(consider using --after)\n'))
     return errors, copied
 
 def copy(ui, repo, *pats, **opts):
     """mark files as copied for the next commit
 
     Mark dest as having copies of source files.  If dest is a
     directory, copies are put in that directory.  If dest is a file,
     there can only be one source.
 
     By default, this command copies the contents of files as they
     stand in the working directory.  If invoked with --after, the
     operation is recorded, but no copying is performed.
 
     This command takes effect in the next commit.
 
     NOTE: This command should be treated as experimental. While it
     should properly record copied files, this information is not yet
     fully used by merge, nor fully reported by log.
     """
     wlock = repo.wlock(0)
     errs, copied = docopy(ui, repo, pats, opts, wlock)
     return errs
 
 def debugancestor(ui, index, rev1, rev2):
     """find the ancestor revision of two revisions in a given index"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), index, "", 0)
     a = r.ancestor(r.lookup(rev1), r.lookup(rev2))
     ui.write("%d:%s\n" % (r.rev(a), hex(a)))
 
 def debugcomplete(ui, cmd='', **opts):
     """returns the completion list associated with the given command"""
 
     if opts['options']:
         options = []
         otables = [globalopts]
         if cmd:
             aliases, entry = findcmd(cmd)
             otables.append(entry[1])
         for t in otables:
             for o in t:
                 if o[0]:
                     options.append('-%s' % o[0])
                 options.append('--%s' % o[1])
         ui.write("%s\n" % "\n".join(options))
         return
 
     clist = findpossible(cmd).keys()
     clist.sort()
     ui.write("%s\n" % "\n".join(clist))
 
 def debugrebuildstate(ui, repo, rev=None):
     """rebuild the dirstate as it would look like for the given revision"""
     if not rev:
         rev = repo.changelog.tip()
     else:
         rev = repo.lookup(rev)
     change = repo.changelog.read(rev)
     n = change[0]
     files = repo.manifest.readflags(n)
     wlock = repo.wlock()
     repo.dirstate.rebuild(rev, files.iteritems())
 
 def debugcheckstate(ui, repo):
     """validate the correctness of the current dirstate"""
     parent1, parent2 = repo.dirstate.parents()
     repo.dirstate.read()
     dc = repo.dirstate.map
     keys = dc.keys()
     keys.sort()
     m1n = repo.changelog.read(parent1)[0]
     m2n = repo.changelog.read(parent2)[0]
     m1 = repo.manifest.read(m1n)
     m2 = repo.manifest.read(m2n)
     errors = 0
     for f in dc:
         state = repo.dirstate.state(f)
         if state in "nr" and f not in m1:
             ui.warn(_("%s in state %s, but not in manifest1\n") % (f, state))
             errors += 1
         if state in "a" and f in m1:
             ui.warn(_("%s in state %s, but also in manifest1\n") % (f, state))
             errors += 1
         if state in "m" and f not in m1 and f not in m2:
             ui.warn(_("%s in state %s, but not in either manifest\n") %
                     (f, state))
             errors += 1
     for f in m1:
         state = repo.dirstate.state(f)
         if state not in "nrm":
             ui.warn(_("%s in manifest1, but listed as state %s") % (f, state))
             errors += 1
     if errors:
         error = _(".hg/dirstate inconsistent with current parent's manifest")
         raise util.Abort(error)
 
 def debugconfig(ui, repo, *values):
     """show combined config settings from all hgrc files
 
     With no args, print names and values of all config items.
 
     With one arg of the form section.name, print just the value of
     that config item.
 
     With multiple args, print names and values of all config items
     with matching section names."""
 
     if values:
         if len([v for v in values if '.' in v]) > 1:
             raise util.Abort(_('only one config item permitted'))
     for section, name, value in ui.walkconfig():
         sectname = section + '.' + name
         if values:
             for v in values:
                 if v == section:
                     ui.write('%s=%s\n' % (sectname, value))
                 elif v == sectname:
                     ui.write(value, '\n')
         else:
             ui.write('%s=%s\n' % (sectname, value))
 
 def debugsetparents(ui, repo, rev1, rev2=None):
     """manually set the parents of the current working directory
 
     This is useful for writing repository conversion tools, but should
     be used with care.
     """
 
     if not rev2:
         rev2 = hex(nullid)
 
     repo.dirstate.setparents(repo.lookup(rev1), repo.lookup(rev2))
 
 def debugstate(ui, repo):
     """show the contents of the current dirstate"""
     repo.dirstate.read()
     dc = repo.dirstate.map
     keys = dc.keys()
     keys.sort()
     for file_ in keys:
         ui.write("%c %3o %10d %s %s\n"
                  % (dc[file_][0], dc[file_][1] & 0777, dc[file_][2],
                     time.strftime("%x %X",
                                   time.localtime(dc[file_][3])), file_))
     for f in repo.dirstate.copies:
         ui.write(_("copy: %s -> %s\n") % (repo.dirstate.copies[f], f))
 
 def debugdata(ui, file_, rev):
     """dump the contents of an data file revision"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False),
                       file_[:-2] + ".i", file_, 0)
     try:
         ui.write(r.revision(r.lookup(rev)))
     except KeyError:
         raise util.Abort(_('invalid revision identifier %s'), rev)
 
 def debugindex(ui, file_):
     """dump the contents of an index file"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_, "", 0)
     ui.write("   rev    offset  length   base linkrev" +
              " nodeid       p1           p2\n")
     for i in range(r.count()):
         node = r.node(i)
         pp = r.parents(node)
         ui.write("% 6d % 9d % 7d % 6d % 7d %s %s %s\n" % (
                 i, r.start(i), r.length(i), r.base(i), r.linkrev(node),
             short(node), short(pp[0]), short(pp[1])))
 
 def debugindexdot(ui, file_):
     """dump an index DAG as a .dot file"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_, "", 0)
     ui.write("digraph G {\n")
     for i in range(r.count()):
         node = r.node(i)
         pp = r.parents(node)
         ui.write("\t%d -> %d\n" % (r.rev(pp[0]), i))
         if pp[1] != nullid:
             ui.write("\t%d -> %d\n" % (r.rev(pp[1]), i))
     ui.write("}\n")
 
 def debugrename(ui, repo, file, rev=None):
     """dump rename information"""
     r = repo.file(relpath(repo, [file])[0])
     if rev:
         try:
             # assume all revision numbers are for changesets
             n = repo.lookup(rev)
             change = repo.changelog.read(n)
             m = repo.manifest.read(change[0])
             n = m[relpath(repo, [file])[0]]
         except (hg.RepoError, KeyError):
             n = r.lookup(rev)
     else:
         n = r.tip()
     m = r.renamed(n)
     if m:
         ui.write(_("renamed from %s:%s\n") % (m[0], hex(m[1])))
     else:
         ui.write(_("not renamed\n"))
 
 def debugwalk(ui, repo, *pats, **opts):
     """show how files match on given patterns"""
     items = list(walk(repo, pats, opts))
     if not items:
         return
     fmt = '%%s  %%-%ds  %%-%ds  %%s' % (
         max([len(abs) for (src, abs, rel, exact) in items]),
         max([len(rel) for (src, abs, rel, exact) in items]))
     for src, abs, rel, exact in items:
         line = fmt % (src, abs, rel, exact and 'exact' or '')
         ui.write("%s\n" % line.rstrip())
 
 def diff(ui, repo, *pats, **opts):
     """diff repository (or selected files)
 
     Show differences between revisions for the specified files.
 
     Differences between files are shown using the unified diff format.
 
     When two revision arguments are given, then changes are shown
     between those revisions. If only one revision is specified then
     that revision is compared to the working directory, and, when no
     revisions are specified, the working directory files are compared
     to its parent.
 
     Without the -a option, diff will avoid generating diffs of files
     it detects as binary. With -a, diff will generate a diff anyway,
     probably with undesirable results.
     """
     node1, node2 = revpair(ui, repo, opts['rev'])
 
     fns, matchfn, anypats = matchpats(repo, pats, opts)
 
     dodiff(sys.stdout, ui, repo, node1, node2, fns, match=matchfn,
            text=opts['text'], opts=opts)
 
 def doexport(ui, repo, changeset, seqno, total, revwidth, opts):
     node = repo.lookup(changeset)
     parents = [p for p in repo.changelog.parents(node) if p != nullid]
     if opts['switch_parent']:
         parents.reverse()
     prev = (parents and parents[0]) or nullid
     change = repo.changelog.read(node)
 
     fp = make_file(repo, opts['output'], 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("# 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")
 
     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
 
     Print the changeset header and diffs for one or more revisions.
 
     The information shown in the changeset header is: author,
     changeset hash, parent and commit comment.
 
     Output may be to a file, in which case the name of the file is
     given using a format string.  The formatting rules are as follows:
 
     %%   literal "%" character
     %H   changeset hash (40 bytes of hexadecimal)
     %N   number of patches being generated
     %R   changeset revision number
     %b   basename of the exporting repository
     %h   short-form changeset hash (12 bytes of hexadecimal)
     %n   zero-padded sequence number, starting at 1
     %r   zero-padded changeset revision number
 
     Without the -a option, export will avoid generating diffs of files
     it detects as binary. With -a, export will generate a diff anyway,
     probably with undesirable results.
 
     With the --switch-parent option, the diff will be against the second
     parent. It can be useful to review a merge.
     """
     if not changesets:
         raise util.Abort(_("export requires at least one changeset"))
     seqno = 0
     revs = list(revrange(ui, repo, changesets))
     total = len(revs)
     revwidth = max(map(len, revs))
     msg = len(revs) > 1 and _("Exporting patches:\n") or _("Exporting patch:\n")
     ui.note(msg)
     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 (DEPRECATED)
 
     (DEPRECATED)
     Undo an 'hg add' scheduled for the next commit.
 
     This command is now deprecated and will be removed in a future
     release. Please use revert instead.
     """
     ui.warn(_("(the forget command is deprecated; use revert instead)\n"))
     forget = []
     for src, abs, rel, exact in walk(repo, pats, opts):
         if repo.dirstate.state(abs) == 'a':
             forget.append(abs)
             if ui.verbose or not exact:
                 ui.status(_('forgetting %s\n') % ((pats and rel) or abs))
     repo.forget(forget)
 
 def grep(ui, repo, pattern, *pats, **opts):
     """search for a pattern in specified files and revisions
 
     Search revisions of files for a regular expression.
 
     This command behaves differently than Unix grep.  It only accepts
     Python/Perl regexps.  It searches repository history, not the
     working directory.  It always prints the revision number in which
     a match appears.
 
     By default, grep only prints output for the first revision of a
     file in which it finds a match.  To get it to print every revision
     that contains a change in match status ("-" for a match that
     becomes a non-match, or "+" for a non-match that becomes a match),
     use the --all flag.
     """
     reflags = 0
     if opts['ignore_case']:
         reflags |= re.I
     regexp = re.compile(pattern, reflags)
     sep, eol = ':', '\n'
     if opts['print0']:
         sep = eol = '\0'
 
     fcache = {}
     def getfile(fn):
         if fn not in fcache:
             fcache[fn] = repo.file(fn)
         return fcache[fn]
 
     def matchlines(body):
         begin = 0
         linenum = 0
         while True:
             match = regexp.search(body, begin)
             if not match:
                 break
             mstart, mend = match.span()
             linenum += body.count('\n', begin, mstart) + 1
             lstart = body.rfind('\n', begin, mstart) + 1 or begin
             lend = body.find('\n', mend)
             yield linenum, mstart - lstart, mend - lstart, body[lstart:lend]
             begin = lend + 1
 
     class linestate(object):
         def __init__(self, line, linenum, colstart, colend):
             self.line = line
             self.linenum = linenum
             self.colstart = colstart
             self.colend = colend
         def __eq__(self, other):
             return self.line == other.line
         def __hash__(self):
             return hash(self.line)
 
     matches = {}
     def grepbody(fn, rev, body):
         matches[rev].setdefault(fn, {})
         m = matches[rev][fn]
         for lnum, cstart, cend, line in matchlines(body):
             s = linestate(line, lnum, cstart, cend)
             m[s] = s
 
     # FIXME: prev isn't used, why ?
     prev = {}
     ucache = {}
     def display(fn, rev, states, prevstates):
         diff = list(sets.Set(states).symmetric_difference(sets.Set(prevstates)))
         diff.sort(lambda x, y: cmp(x.linenum, y.linenum))
         counts = {'-': 0, '+': 0}
         filerevmatches = {}
         for l in diff:
             if incrementing or not opts['all']:
                 change = ((l in prevstates) and '-') or '+'
                 r = rev
             else:
                 change = ((l in states) and '-') or '+'
                 r = prev[fn]
             cols = [fn, str(rev)]
             if opts['line_number']:
                 cols.append(str(l.linenum))
             if opts['all']:
                 cols.append(change)
             if opts['user']:
                 cols.append(trimuser(ui, getchange(rev)[1], rev,
                                                   ucache))
             if opts['files_with_matches']:
                 c = (fn, rev)
                 if c in filerevmatches:
                     continue
                 filerevmatches[c] = 1
             else:
                 cols.append(l.line)
             ui.write(sep.join(cols), eol)
             counts[change] += 1
         return counts['+'], counts['-']
 
     fstate = {}
     skip = {}
     changeiter, getchange, matchfn = walkchangerevs(ui, repo, pats, opts)
     count = 0
     incrementing = False
     for st, rev, fns in changeiter:
         if st == 'window':
             incrementing = rev
             matches.clear()
         elif st == 'add':
             change = repo.changelog.read(repo.lookup(str(rev)))
             mf = repo.manifest.read(change[0])
             matches[rev] = {}
             for fn in fns:
                 if fn in skip:
                     continue
                 fstate.setdefault(fn, {})
                 try:
                     grepbody(fn, rev, getfile(fn).read(mf[fn]))
                 except KeyError:
                     pass
         elif st == 'iter':
             states = matches[rev].items()
             states.sort()
             for fn, m in states:
                 if fn in skip:
                     continue
                 if incrementing or not opts['all'] or fstate[fn]:
                     pos, neg = display(fn, rev, m, fstate[fn])
                     count += pos + neg
                     if pos and not opts['all']:
                         skip[fn] = True
                 fstate[fn] = m
                 prev[fn] = rev
 
     if not incrementing:
         fstate = fstate.items()
         fstate.sort()
         for fn, state in fstate:
             if fn in skip:
                 continue
             display(fn, rev, {}, state)
     return (count == 0 and 1) or 0
 
 def heads(ui, repo, **opts):
     """show current repository heads
 
     Show all repository head changesets.
 
     Repository "heads" are changesets that don't have children
     changesets. They are where development generally takes place and
     are the usual targets for update and merge operations.
     """
     if opts['rev']:
         heads = repo.heads(repo.lookup(opts['rev']))
     else:
         heads = repo.heads()
     br = None
     if opts['branches']:
         br = repo.branchlookup(heads)
     displayer = show_changeset(ui, repo, opts)
     for n in heads:
         displayer.show(changenode=n, brinfo=br)
 
 def identify(ui, repo):
     """print information about the working copy
 
     Print a short summary of the current state of the repo.
 
     This summary identifies the repository state using one or two parent
     hash identifiers, followed by a "+" if there are uncommitted changes
     in the working directory, followed by a list of tags for this revision.
     """
     parents = [p for p in repo.dirstate.parents() if p != nullid]
     if not parents:
         ui.write(_("unknown\n"))
         return
 
     hexfunc = ui.verbose and hex or short
     modified, added, removed, deleted, unknown = repo.changes()
     output = ["%s%s" %
               ('+'.join([hexfunc(parent) for parent in parents]),
               (modified or added or removed or deleted) and "+" or "")]
 
     if not ui.quiet:
         # multiple tags for a single parent separated by '/'
         parenttags = ['/'.join(tags)
                       for tags in map(repo.nodetags, parents) if tags]
         # tags for multiple parents separated by ' + '
         if parenttags:
             output.append(' + '.join(parenttags))
 
     ui.write("%s\n" % ' '.join(output))
 
 def import_(ui, repo, patch1, *patches, **opts):
     """import an ordered set of patches
 
     Import a list of patches and commit them individually.
 
     If there are outstanding changes in the working directory, import
     will abort unless given the -f flag.
 
     You can import a patch straight from a mail message.  Even patches
     as attachments work (body part must be type text/plain or
     text/x-patch to be used).  From and Subject headers of email
     message are used as default committer and commit message.  All
     text/plain body parts before first diff are added to commit
     message.
 
     If imported patch was generated by hg export, user and description
     from patch override values from message headers and body.  Values
     given on command line with -m and -u override these.
 
     To read a patch from standard input, use patch name "-".
     """
     patches = (patch1,) + patches
 
     if not opts['force']:
         bail_if_changed(repo)
 
     d = opts["base"]
     strip = opts["strip"]
 
     mailre = re.compile(r'(?:From |[\w-]+:)')
 
     # 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)
 
     for patch in patches:
         pf = os.path.join(d, patch)
 
         message = None
         user = None
         date = None
         hgpatch = False
 
         p = email.Parser.Parser()
         if pf == '-':
             msg = p.parse(sys.stdin)
             ui.status(_("applying patch from stdin\n"))
         else:
             msg = p.parse(file(pf))
             ui.status(_("applying %s\n") % patch)
 
         fd, tmpname = tempfile.mkstemp(prefix='hg-patch-')
         tmpfp = os.fdopen(fd, 'w')
         try:
             message = msg['Subject']
             if message:
                 message = message.replace('\n\t', ' ')
                 ui.debug('Subject: %s\n' % message)
             user = msg['From']
             if user:
                 ui.debug('From: %s\n' % user)
             diffs_seen = 0
             ok_types = ('text/plain', '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
                     hgpatch = False
                     fp = cStringIO.StringIO()
                     if message:
                         fp.write(message)
                         fp.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
                             fp.seek(0)
                             fp.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('# '):
                             fp.write(line)
                             fp.write('\n')
                     message = fp.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
 
             if opts['message']:
                 # pickup the cmdline msg
                 message = opts['message']
             elif message:
                 # pickup the patch msg
                 message = message.strip()
             else:
                 # launch the editor
                 message = None
             ui.debug(_('message:\n%s\n') % message)
 
             tmpfp.close()
             if not diffs_seen:
                 raise util.Abort(_('no diffs found'))
 
             files = util.patch(strip, tmpname, ui)
             if len(files) > 0:
                 addremove_lock(ui, repo, files, {})
             repo.commit(files, message, user, date)
         finally:
             os.unlink(tmpname)
 
 def incoming(ui, repo, source="default", **opts):
     """show new changesets found in source
 
     Show new changesets found in the specified path/URL or the default
     pull location. These are the changesets that would be pulled if a pull
     was requested.
 
     For remote repository, using --bundle avoids downloading the changesets
     twice if the incoming is followed by a pull.
 
     See pull for valid source format details.
     """
     source = ui.expandpath(source)
     ui.setconfig_remoteopts(**opts)
 
     other = hg.repository(ui, source)
     incoming = repo.findincoming(other, force=opts["force"])
     if not incoming:
         ui.status(_("no changes found\n"))
         return
 
     cleanup = None
     try:
         fname = opts["bundle"]
         if fname or not other.local():
             # create a bundle (uncompressed if other repo is not local)
             cg = other.changegroup(incoming, "incoming")
             fname = cleanup = write_bundle(cg, fname, compress=other.local())
             # keep written bundle?
             if opts["bundle"]:
                 cleanup = None
             if not other.local():
                 # use the created uncompressed bundlerepo
                 other = bundlerepo.bundlerepository(ui, repo.root, fname)
 
         revs = None
         if opts['rev']:
             revs = [other.lookup(rev) for rev in opts['rev']]
         o = other.changelog.nodesbetween(incoming, revs)[0]
         if opts['newest_first']:
             o.reverse()
         displayer = show_changeset(ui, other, opts)
         for n in o:
             parents = [p for p in other.changelog.parents(n) if p != nullid]
             if opts['no_merges'] and len(parents) == 2:
                 continue
             displayer.show(changenode=n)
             if opts['patch']:
                 prev = (parents and parents[0]) or nullid
                 dodiff(ui, ui, other, prev, n)
                 ui.write("\n")
     finally:
         if hasattr(other, 'close'):
             other.close()
         if cleanup:
             os.unlink(cleanup)
 
 def init(ui, dest=".", **opts):
     """create a new repository in the given directory
 
     Initialize a new repository in the given directory.  If the given
     directory does not exist, it is created.
 
     If no directory is given, the current directory is used.
 
     It is possible to specify an ssh:// URL as the destination.
     Look at the help text for the pull command for important details
     about ssh:// URLs.
     """
     ui.setconfig_remoteopts(**opts)
     hg.repository(ui, dest, create=1)
 
 def locate(ui, repo, *pats, **opts):
     """locate files matching specific patterns
 
     Print all files under Mercurial control whose names match the
     given patterns.
 
     This command searches the current directory and its
     subdirectories.  To search an entire repository, move to the root
     of the repository.
 
     If no patterns are given to match, this command prints all file
     names.
 
     If you want to feed the output of this command into the "xargs"
     command, use the "-0" option to both this command and "xargs".
     This will avoid the problem of "xargs" treating single filenames
     that contain white space as multiple filenames.
     """
     end = opts['print0'] and '\0' or '\n'
     rev = opts['rev']
     if rev:
         node = repo.lookup(rev)
     else:
         node = None
 
     for src, abs, rel, exact in walk(repo, pats, opts, node=node,
                                      head='(?:.*/|)'):
         if not node and repo.dirstate.state(abs) == '?':
             continue
         if opts['fullpath']:
             ui.write(os.path.join(repo.root, abs), end)
         else:
             ui.write(((pats and rel) or abs), end)
 
 def log(ui, repo, *pats, **opts):
     """show revision history of entire repository or files
 
     Print the revision history of the specified files or the entire project.
 
     By default this command outputs: changeset id and hash, tags,
     non-trivial parents, user, date and time, and a summary for each
     commit. When the -v/--verbose switch is used, the list of changed
     files and full commit message is shown.
     """
     class dui(object):
         # Implement and delegate some ui protocol.  Save hunks of
         # output for later display in the desired order.
         def __init__(self, ui):
             self.ui = ui
             self.hunk = {}
             self.header = {}
         def bump(self, rev):
             self.rev = rev
             self.hunk[rev] = []
             self.header[rev] = []
         def note(self, *args):
             if self.verbose:
                 self.write(*args)
         def status(self, *args):
             if not self.quiet:
                 self.write(*args)
         def write(self, *args):
             self.hunk[self.rev].append(args)
         def write_header(self, *args):
             self.header[self.rev].append(args)
         def debug(self, *args):
             if self.debugflag:
                 self.write(*args)
         def __getattr__(self, key):
             return getattr(self.ui, key)
 
     changeiter, getchange, matchfn = walkchangerevs(ui, repo, pats, opts)
 
     if opts['limit']:
         try:
             limit = int(opts['limit'])
         except ValueError:
             raise util.Abort(_('limit must be a positive integer'))
         if limit <= 0: raise util.Abort(_('limit must be positive'))
     else:
         limit = sys.maxint
     count = 0
 
     displayer = show_changeset(ui, repo, opts)
     for st, rev, fns in changeiter:
         if st == 'window':
             du = dui(ui)
             displayer.ui = du
         elif st == 'add':
             du.bump(rev)
             changenode = repo.changelog.node(rev)
             parents = [p for p in repo.changelog.parents(changenode)
                        if p != nullid]
             if opts['no_merges'] and len(parents) == 2:
                 continue
             if opts['only_merges'] and len(parents) != 2:
                 continue
 
             if opts['keyword']:
                 changes = getchange(rev)
                 miss = 0
                 for k in [kw.lower() for kw in opts['keyword']]:
                     if not (k in changes[1].lower() or
                             k in changes[4].lower() or
                             k in " ".join(changes[3][:20]).lower()):
                         miss = 1
                         break
                 if miss:
                     continue
 
             br = None
             if opts['branches']:
                 br = repo.branchlookup([repo.changelog.node(rev)])
 
             displayer.show(rev, brinfo=br)
             if opts['patch']:
                 prev = (parents and parents[0]) or nullid
                 dodiff(du, du, repo, prev, changenode, match=matchfn)
                 du.write("\n\n")
         elif st == 'iter':
             if count == limit: break
             if du.header[rev]:
                 for args in du.header[rev]:
                     ui.write_header(*args)
             if du.hunk[rev]:
                 count += 1
                 for args in du.hunk[rev]:
                     ui.write(*args)
 
 def manifest(ui, repo, rev=None):
     """output the latest or given revision of the project manifest
 
     Print a list of version controlled files for the given revision.
 
     The manifest is the list of files being version controlled. If no revision
     is given then the tip is used.
     """
     if rev:
         try:
             # assume all revision numbers are for changesets
             n = repo.lookup(rev)
             change = repo.changelog.read(n)
             n = change[0]
         except hg.RepoError:
             n = repo.manifest.lookup(rev)
     else:
         n = repo.manifest.tip()
     m = repo.manifest.read(n)
     mf = repo.manifest.readflags(n)
     files = m.keys()
     files.sort()
 
     for f in files:
         ui.write("%40s %3s %s\n" % (hex(m[f]), mf[f] and "755" or "644", f))
 
 def merge(ui, repo, node=None, **opts):
     """Merge working directory with another revision
 
     Merge the contents of the current working directory and the
     requested revision. Files that changed between either parent are
     marked as changed for the next commit and a commit must be
     performed before any further updates are allowed.
     """
     return doupdate(ui, repo, node=node, merge=True, **opts)
 
 def outgoing(ui, repo, dest=None, **opts):
     """show changesets not found in destination
 
     Show changesets not found in the specified destination repository or
     the default push location. These are the changesets that would be pushed
     if a push was requested.
 
     See pull for valid destination format details.
     """
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     ui.setconfig_remoteopts(**opts)
     revs = None
     if opts['rev']:
         revs = [repo.lookup(rev) for rev in opts['rev']]
 
     other = hg.repository(ui, dest)
     o = repo.findoutgoing(other, force=opts['force'])
     if not o:
         ui.status(_("no changes found\n"))
         return
     o = repo.changelog.nodesbetween(o, revs)[0]
     if opts['newest_first']:
         o.reverse()
     displayer = show_changeset(ui, repo, opts)
     for n in o:
         parents = [p for p in repo.changelog.parents(n) if p != nullid]
         if opts['no_merges'] and len(parents) == 2:
             continue
         displayer.show(changenode=n)
         if opts['patch']:
             prev = (parents and parents[0]) or nullid
             dodiff(ui, ui, repo, prev, n)
             ui.write("\n")
 
 def parents(ui, repo, rev=None, branches=None, **opts):
     """show the parents of the working dir or revision
 
     Print the working directory's parent revisions.
     """
     if rev:
         p = repo.changelog.parents(repo.lookup(rev))
     else:
         p = repo.dirstate.parents()
 
     br = None
     if branches is not None:
         br = repo.branchlookup(p)
     displayer = show_changeset(ui, repo, opts)
     for n in p:
         if n != nullid:
             displayer.show(changenode=n, brinfo=br)
 
 def paths(ui, repo, search=None):
     """show definition of symbolic path names
 
     Show definition of symbolic path name NAME. If no name is given, show
     definition of available names.
 
     Path names are defined in the [paths] section of /etc/mercurial/hgrc
     and $HOME/.hgrc.  If run inside a repository, .hg/hgrc is used, too.
     """
     if search:
         for name, path in ui.configitems("paths"):
             if name == search:
                 ui.write("%s\n" % path)
                 return
         ui.warn(_("not found!\n"))
         return 1
     else:
         for name, path in ui.configitems("paths"):
             ui.write("%s = %s\n" % (name, path))
 
 def postincoming(ui, repo, modheads, optupdate):
     if modheads == 0:
         return
     if optupdate:
         if modheads == 1:
             return doupdate(ui, repo)
         else:
             ui.status(_("not updating, since new heads added\n"))
     if modheads > 1:
         ui.status(_("(run 'hg heads' to see heads, 'hg merge' to merge)\n"))
     else:
         ui.status(_("(run 'hg update' to get a working copy)\n"))
 
 def pull(ui, repo, source="default", **opts):
     """pull changes from the specified source
 
     Pull changes from a remote repository to a local one.
 
     This finds all changes from the repository at the specified path
     or URL and adds them to the local repository. By default, this
     does not update the copy of the project in the working directory.
 
     Valid URLs are of the form:
 
       local/filesystem/path
       http://[user@]host[:port]/[path]
       https://[user@]host[:port]/[path]
       ssh://[user@]host[:port]/[path]
 
     Some notes about using SSH with Mercurial:
     - SSH requires an accessible shell account on the destination machine
       and a copy of hg in the remote path or specified with as remotecmd.
     - path is relative to the remote user's home directory by default.
       Use an extra slash at the start of a path to specify an absolute path:
         ssh://example.com//tmp/repository
     - Mercurial doesn't use its own compression via SSH; the right thing
       to do is to configure it in your ~/.ssh/ssh_config, e.g.:
         Host *.mylocalnetwork.example.com
           Compression off
         Host *
           Compression on
       Alternatively specify "ssh -C" as your ssh command in your hgrc or
       with the --ssh command line option.
     """
     source = ui.expandpath(source)
     ui.setconfig_remoteopts(**opts)
 
     other = hg.repository(ui, source)
     ui.status(_('pulling from %s\n') % (source))
     revs = None
     if opts['rev'] and not other.local():
         raise util.Abort(_("pull -r doesn't work for remote repositories yet"))
     elif opts['rev']:
         revs = [other.lookup(rev) for rev in opts['rev']]
     modheads = repo.pull(other, heads=revs, force=opts['force'])
     return postincoming(ui, repo, modheads, opts['update'])
 
 def push(ui, repo, dest=None, **opts):
     """push changes to the specified destination
 
     Push changes from the local repository to the given destination.
 
     This is the symmetrical operation for pull. It helps to move
     changes from the current repository to a different one. If the
     destination is local this is identical to a pull in that directory
     from the current one.
 
     By default, push will refuse to run if it detects the result would
     increase the number of remote heads. This generally indicates the
     the client has forgotten to sync and merge before pushing.
 
     Valid URLs are of the form:
 
       local/filesystem/path
       ssh://[user@]host[:port]/[path]
 
     Look at the help text for the pull command for important details
     about ssh:// URLs.
 
     Pushing to http:// and https:// URLs is possible, too, if this
     feature is enabled on the remote Mercurial server.
     """
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     ui.setconfig_remoteopts(**opts)
 
     other = hg.repository(ui, dest)
     ui.status('pushing to %s\n' % (dest))
     revs = None
     if opts['rev']:
         revs = [repo.lookup(rev) for rev in opts['rev']]
     r = repo.push(other, opts['force'], revs=revs)
     return r == 0
 
 def rawcommit(ui, repo, *flist, **rc):
     """raw commit interface (DEPRECATED)
 
     (DEPRECATED)
     Lowlevel commit, for use in helper scripts.
 
     This command is not intended to be used by normal users, as it is
     primarily useful for importing from other SCMs.
 
     This command is now deprecated and will be removed in a future
     release, please use debugsetparents and commit instead.
     """
 
     ui.warn(_("(the rawcommit command is deprecated)\n"))
 
     message = rc['message']
     if not message and rc['logfile']:
         try:
             message = open(rc['logfile']).read()
         except IOError:
             pass
     if not message and not rc['logfile']:
         raise util.Abort(_("missing commit message"))
 
     files = relpath(repo, list(flist))
     if rc['files']:
         files += open(rc['files']).read().splitlines()
 
     rc['parent'] = map(repo.lookup, rc['parent'])
 
     try:
         repo.rawcommit(files, message, rc['user'], rc['date'], *rc['parent'])
     except ValueError, inst:
         raise util.Abort(str(inst))
 
 def recover(ui, repo):
     """roll back an interrupted transaction
 
     Recover from an interrupted commit or pull.
 
     This command tries to fix the repository status after an interrupted
     operation. It should only be necessary when Mercurial suggests it.
     """
     if repo.recover():
         return repo.verify()
     return 1
 
 def remove(ui, repo, *pats, **opts):
     """remove the specified files on the next commit
 
     Schedule the indicated files for removal from the repository.
 
     This command schedules the files to be removed at the next commit.
     This only removes files from the current branch, not from the
     entire project history.  If the files still exist in the working
     directory, they will be deleted from it.  If invoked with --after,
     files that have been manually deleted are marked as removed.
 
     Modified files and added files are not removed by default.  To
     remove them, use the -f/--force option.
     """
     names = []
     if not opts['after'] and not pats:
         raise util.Abort(_('no files specified'))
     files, matchfn, anypats = matchpats(repo, pats, opts)
     exact = dict.fromkeys(files)
     mardu = map(dict.fromkeys, repo.changes(files=files, match=matchfn))
     modified, added, removed, deleted, unknown = mardu
     remove, forget = [], []
     for src, abs, rel, exact in walk(repo, pats, opts):
         reason = None
         if abs not in deleted and opts['after']:
             reason = _('is still present')
         elif abs in modified and not opts['force']:
             reason = _('is modified (use -f to force removal)')
         elif abs in added:
             if opts['force']:
                 forget.append(abs)
                 continue
             reason = _('has been marked for add (use -f to force removal)')
         elif abs in unknown:
             reason = _('is not managed')
         elif abs in removed:
             continue
         if reason:
             if exact:
                 ui.warn(_('not removing %s: file %s\n') % (rel, reason))
         else:
             if ui.verbose or not exact:
                 ui.status(_('removing %s\n') % rel)
             remove.append(abs)
     repo.forget(forget)
     repo.remove(remove, unlink=not opts['after'])
 
 def rename(ui, repo, *pats, **opts):
     """rename files; equivalent of copy + remove
 
     Mark dest as copies of sources; mark sources for deletion.  If
     dest is a directory, copies are put in that directory.  If dest is
     a file, there can only be one source.
 
     By default, this command copies the contents of files as they
     stand in the working directory.  If invoked with --after, the
     operation is recorded, but no copying is performed.
 
     This command takes effect in the next commit.
 
     NOTE: This command should be treated as experimental. While it
     should properly record rename files, this information is not yet
     fully used by merge, nor fully reported by log.
     """
     wlock = repo.wlock(0)
     errs, copied = docopy(ui, repo, pats, opts, wlock)
     names = []
     for abs, rel, exact in copied:
         if ui.verbose or not exact:
             ui.status(_('removing %s\n') % rel)
         names.append(abs)
     if not opts.get('dry_run'):
         repo.remove(names, True, wlock)
     return errs
 
 def revert(ui, repo, *pats, **opts):
     """revert files or dirs to their states as of some revision
 
     With no revision specified, revert the named files or directories
     to the contents they had in the parent of the working directory.
     This restores the contents of the affected files to an unmodified
     state.  If the working directory has two parents, you must
     explicitly specify the revision to revert to.
 
     Modified files are saved with a .orig suffix before reverting.
     To disable these backups, use --no-backup.
 
     Using the -r option, revert the given files or directories to
     their contents as of a specific revision.  This can be helpful to"roll
     back" some or all of a change that should not have been committed.
 
     Revert modifies the working directory.  It does not commit any
     changes, or change the parent of the working directory.  If you
     revert to a revision other than the parent of the working
     directory, the reverted files will thus appear modified
     afterwards.
 
     If a file has been deleted, it is recreated.  If the executable
     mode of a file was changed, it is reset.
 
     If names are given, all files matching the names are reverted.
 
     If no arguments are given, all files in the repository are reverted.
     """
     parent, p2 = repo.dirstate.parents()
     if opts['rev']:
         node = repo.lookup(opts['rev'])
     elif p2 != nullid:
         raise util.Abort(_('working dir has two parents; '
                            'you must specify the revision to revert to'))
     else:
         node = parent
     mf = repo.manifest.read(repo.changelog.read(node)[0])
     if node == parent:
         pmf = mf
     else:
         pmf = None
 
     wlock = repo.wlock()
 
     # need all matching names in dirstate and manifest of target rev,
     # so have to walk both. do not print errors if files exist in one
     # but not other.
 
     names = {}
     target_only = {}
 
     # walk dirstate.
 
     for src, abs, rel, exact in walk(repo, pats, opts, badmatch=mf.has_key):
         names[abs] = (rel, exact)
         if src == 'b':
             target_only[abs] = True
 
     # walk target manifest.
 
     for src, abs, rel, exact in walk(repo, pats, opts, node=node,
                                      badmatch=names.has_key):
         if abs in names: continue
         names[abs] = (rel, exact)
         target_only[abs] = True
 
     changes = repo.changes(match=names.has_key, wlock=wlock)
     modified, added, removed, deleted, unknown = map(dict.fromkeys, changes)
 
     revert = ([], _('reverting %s\n'))
     add = ([], _('adding %s\n'))
     remove = ([], _('removing %s\n'))
     forget = ([], _('forgetting %s\n'))
     undelete = ([], _('undeleting %s\n'))
     update = {}
 
     disptable = (
         # dispatch table:
         #   file state
         #   action if in target manifest
         #   action if not in target manifest
         #   make backup if in target manifest
         #   make backup if not in target manifest
         (modified, revert, remove, True, True),
         (added, revert, forget, True, False),
         (removed, undelete, None, False, False),
         (deleted, revert, remove, False, False),
         (unknown, add, None, True, False),
         (target_only, add, None, False, False),
         )
 
     entries = names.items()
     entries.sort()
 
     for abs, (rel, exact) in entries:
         mfentry = mf.get(abs)
         def handle(xlist, dobackup):
             xlist[0].append(abs)
             update[abs] = 1
             if dobackup and not opts['no_backup'] and os.path.exists(rel):
                 bakname = "%s.orig" % rel
                 ui.note(_('saving current version of %s as %s\n') %
                         (rel, bakname))
                 if not opts.get('dry_run'):
                     shutil.copyfile(rel, bakname)
                     shutil.copymode(rel, bakname)
             if ui.verbose or not exact:
                 ui.status(xlist[1] % rel)
         for table, hitlist, misslist, backuphit, backupmiss in disptable:
             if abs not in table: continue
             # file has changed in dirstate
             if mfentry:
                 handle(hitlist, backuphit)
             elif misslist is not None:
                 handle(misslist, backupmiss)
             else:
                 if exact: ui.warn(_('file not managed: %s\n' % rel))
             break
         else:
             # file has not changed in dirstate
             if node == parent:
                 if exact: ui.warn(_('no changes needed to %s\n' % rel))
                 continue
             if pmf is None:
                 # only need parent manifest in this unlikely case,
                 # so do not read by default
                 pmf = repo.manifest.read(repo.changelog.read(parent)[0])
             if abs in pmf:
                 if mfentry:
                     # if version of file is same in parent and target
                     # manifests, do nothing
                     if pmf[abs] != mfentry:
                         handle(revert, False)
                 else:
                     handle(remove, False)
 
     if not opts.get('dry_run'):
         repo.dirstate.forget(forget[0])
         r = repo.update(node, False, True, update.has_key, False, wlock=wlock,
                         show_stats=False)
         repo.dirstate.update(add[0], 'a')
         repo.dirstate.update(undelete[0], 'n')
         repo.dirstate.update(remove[0], 'r')
         return r
 
 def rollback(ui, repo):
     """roll back the last transaction in this repository
 
     Roll back the last transaction in this repository, restoring the
     project to its state prior to the transaction.
 
     Transactions are used to encapsulate the effects of all commands
     that create new changesets or propagate existing changesets into a
     repository. For example, the following commands are transactional,
     and their effects can be rolled back:
 
       commit
       import
       pull
       push (with this repository as destination)
       unbundle
 
     This command should be used with care. There is only one level of
     rollback, and there is no way to undo a rollback.
 
     This command is not intended for use on public repositories. Once
     changes are visible for pull by other users, rolling a transaction
     back locally is ineffective (someone else may already have pulled
     the changes). Furthermore, a race is possible with readers of the
     repository; for example an in-progress pull from the repository
     may fail if a rollback is performed.
     """
     repo.rollback()
 
 def root(ui, repo):
     """print the root (top) of the current working dir
 
     Print the root directory of the current repository.
     """
     ui.write(repo.root + "\n")
 
 def serve(ui, repo, **opts):
     """export the repository via HTTP
 
     Start a local HTTP repository browser and pull server.
 
     By default, the server logs accesses to stdout and errors to
     stderr.  Use the "-A" and "-E" options to log to files.
     """
 
     if opts["stdio"]:
         if repo is None:
             raise hg.RepoError(_('no repo found'))
         s = sshserver.sshserver(ui, repo)
         s.serve_forever()
 
     optlist = ("name templates style address port ipv6"
                " accesslog errorlog webdir_conf")
     for o in optlist.split():
         if opts[o]:
             ui.setconfig("web", o, opts[o])
 
     if repo is None and not ui.config("web", "webdir_conf"):
         raise hg.RepoError(_('no repo found'))
 
     if opts['daemon'] and not opts['daemon_pipefds']:
         rfd, wfd = os.pipe()
         args = sys.argv[:]
         args.append('--daemon-pipefds=%d,%d' % (rfd, wfd))
         pid = os.spawnvp(os.P_NOWAIT | getattr(os, 'P_DETACH', 0),
                          args[0], args)
         os.close(wfd)
         os.read(rfd, 1)
         os._exit(0)
 
     try:
         httpd = hgweb.server.create_server(ui, repo)
     except socket.error, inst:
         raise util.Abort(_('cannot start server: ') + inst.args[1])
 
     if ui.verbose:
         addr, port = httpd.socket.getsockname()
         if addr == '0.0.0.0':
             addr = socket.gethostname()
         else:
             try:
                 addr = socket.gethostbyaddr(addr)[0]
             except socket.error:
                 pass
         if port != 80:
             ui.status(_('listening at http://%s:%d/\n') % (addr, port))
         else:
             ui.status(_('listening at http://%s/\n') % addr)
 
     if opts['pid_file']:
         fp = open(opts['pid_file'], 'w')
         fp.write(str(os.getpid()) + '\n')
         fp.close()
 
     if opts['daemon_pipefds']:
         rfd, wfd = [int(x) for x in opts['daemon_pipefds'].split(',')]
         os.close(rfd)
         os.write(wfd, 'y')
         os.close(wfd)
         sys.stdout.flush()
         sys.stderr.flush()
         fd = os.open(util.nulldev, os.O_RDWR)
         if fd != 0: os.dup2(fd, 0)
         if fd != 1: os.dup2(fd, 1)
         if fd != 2: os.dup2(fd, 2)
         if fd not in (0, 1, 2): os.close(fd)
 
     httpd.serve_forever()
 
 def status(ui, repo, *pats, **opts):
     """show changed files in the working directory
 
     Show changed files in the repository.  If names are
     given, only files that match are shown.
 
     The codes used to show the status of files are:
     M = modified
     A = added
     R = removed
     ! = deleted, but still tracked
     ? = not tracked
     I = ignored (not shown by default)
     """
 
     show_ignored = opts['ignored'] and True or False
     files, matchfn, anypats = matchpats(repo, pats, opts)
     cwd = (pats and repo.getcwd()) or ''
     modified, added, removed, deleted, unknown, ignored = [
         [util.pathto(cwd, x) for x in n]
         for n in repo.changes(files=files, match=matchfn,
                               show_ignored=show_ignored)]
 
     changetypes = [('modified', 'M', modified),
                    ('added', 'A', added),
                    ('removed', 'R', removed),
                    ('deleted', '!', deleted),
                    ('unknown', '?', unknown),
                    ('ignored', 'I', ignored)]
 
     end = opts['print0'] and '\0' or '\n'
 
     for opt, char, changes in ([ct for ct in changetypes if opts[ct[0]]]
                                or changetypes):
         if opts['no_status']:
             format = "%%s%s" % end
         else:
             format = "%s %%s%s" % (char, end)
 
         for f in changes:
             ui.write(format % f)
 
 def tag(ui, repo, name, rev_=None, **opts):
     """add a tag for the current tip or a given revision
 
     Name a particular revision using <name>.
 
     Tags are used to name particular revisions of the repository and are
     very useful to compare different revision, to go back to significant
     earlier versions or to mark branch points as releases, etc.
 
     If no revision is given, the tip is used.
 
     To facilitate version control, distribution, and merging of tags,
     they are stored as a file named ".hgtags" which is managed
     similarly to other project files and can be hand-edited if
     necessary.  The file '.hg/localtags' is used for local tags (not
     shared among repositories).
     """
     if name == "tip":
         raise util.Abort(_("the name 'tip' is reserved"))
     if rev_ is not None:
         ui.warn(_("use of 'hg tag NAME [REV]' is deprecated, "
                   "please use 'hg tag [-r REV] NAME' instead\n"))
         if opts['rev']:
             raise util.Abort(_("use only one form to specify the revision"))
     if opts['rev']:
         rev_ = opts['rev']
     if rev_:
         r = hex(repo.lookup(rev_))
     else:
         r = hex(repo.changelog.tip())
 
     repo.tag(name, r, opts['local'], opts['message'], opts['user'],
              opts['date'])
 
 def tags(ui, repo):
     """list repository tags
 
     List the repository tags.
 
     This lists both regular and local tags.
     """
 
     l = repo.tagslist()
     l.reverse()
     for t, n in l:
         try:
             r = "%5d:%s" % (repo.changelog.rev(n), hex(n))
         except KeyError:
             r = "    ?:?"
         if ui.quiet:
             ui.write("%s\n" % t)
         else:
             ui.write("%-30s %s\n" % (t, r))
 
 def tip(ui, repo, **opts):
     """show the tip revision
 
     Show the tip revision.
     """
     n = repo.changelog.tip()
     br = None
     if opts['branches']:
         br = repo.branchlookup([n])
     show_changeset(ui, repo, opts).show(changenode=n, brinfo=br)
     if opts['patch']:
         dodiff(ui, ui, repo, repo.changelog.parents(n)[0], n)
 
 def unbundle(ui, repo, fname, **opts):
     """apply a changegroup file
 
     Apply a compressed changegroup file generated by the bundle
     command.
     """
     f = urllib.urlopen(fname)
 
     header = f.read(6)
     if not header.startswith("HG"):
         raise util.Abort(_("%s: not a Mercurial bundle file") % fname)
     elif not header.startswith("HG10"):
         raise util.Abort(_("%s: unknown bundle version") % fname)
     elif header == "HG10BZ":
         def generator(f):
             zd = bz2.BZ2Decompressor()
             zd.decompress("BZ")
             for chunk in f:
                 yield zd.decompress(chunk)
     elif header == "HG10UN":
         def generator(f):
             for chunk in f:
                 yield chunk
     else:
         raise util.Abort(_("%s: unknown bundle compression type")
                          % fname)
     gen = generator(util.filechunkiter(f, 4096))
     modheads = repo.addchangegroup(util.chunkbuffer(gen), 'unbundle')
     return postincoming(ui, repo, modheads, opts['update'])
 
 def undo(ui, repo):
     """undo the last commit or pull (DEPRECATED)
 
     (DEPRECATED)
     This command is now deprecated and will be removed in a future
     release. Please use the rollback command instead.  For usage
     instructions, see the rollback command.
     """
     ui.warn(_('(the undo command is deprecated; use rollback instead)\n'))
     repo.rollback()
 
 def update(ui, repo, node=None, merge=False, clean=False, force=None,
            branch=None, **opts):
     """update or merge working directory
 
     Update the working directory to the specified revision.
 
     If there are no outstanding changes in the working directory and
     there is a linear relationship between the current version and the
     requested version, the result is the requested version.
 
     To merge the working directory with another revision, use the
     merge command.
 
     By default, update will refuse to run if doing so would require
     merging or discarding local changes.
     """
     if merge:
         ui.warn(_('(the -m/--merge option is deprecated; '
                   'use the merge command instead)\n'))
     return doupdate(ui, repo, node, merge, clean, force, branch, **opts)
 
 def doupdate(ui, repo, node=None, merge=False, clean=False, force=None,
              branch=None, **opts):
     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, opts).show(changenode=x, brinfo=br)
             return 1
         if len(found) == 1:
             node = found[0]
             ui.warn(_("Using head %s for branch %s\n") % (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, forcemerge=force)
 
 def verify(ui, repo):
     """verify the integrity of the repository
 
     Verify the integrity of the current repository.
 
     This will perform an extensive check of the repository's
     integrity, validating the hashes and checksums of each entry in
     the changelog, manifest, and tracked files, as well as the
     integrity of their crosslinks and indices.
     """
     return repo.verify()
 
 # Command options and aliases are listed here, alphabetically
 
 table = {
     "^add":
         (add,
          [('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns')),
           ('n', 'dry-run', None, _('do not perform actions, just print output'))],
          _('hg add [OPTION]... [FILE]...')),
     "debugaddremove|addremove":
         (addremove,
          [('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns')),
           ('n', 'dry-run', None, _('do not perform actions, just print output'))],
          _('hg addremove [OPTION]... [FILE]...')),
     "^annotate":
         (annotate,
          [('r', 'rev', '', _('annotate the specified revision')),
           ('a', 'text', None, _('treat all files as text')),
           ('u', 'user', None, _('list the author')),
           ('d', 'date', None, _('list the date')),
           ('n', 'number', None, _('list the revision number (default)')),
           ('c', 'changeset', None, _('list the changeset')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg annotate [-r REV] [-a] [-u] [-d] [-n] [-c] FILE...')),
     "archive":
         (archive,
          [('', 'no-decode', None, _('do not pass files through decoders')),
           ('p', 'prefix', '', _('directory prefix for files in archive')),
           ('r', 'rev', '', _('revision to distribute')),
           ('t', 'type', '', _('type of distribution to create')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg archive [OPTION]... DEST')),
     "backout":
         (backout,
          [('', 'merge', None,
            _('merge with old dirstate parent after backout')),
           ('m', 'message', '', _('use <text> as commit message')),
           ('l', 'logfile', '', _('read commit message from <file>')),
           ('d', 'date', '', _('record datecode as commit date')),
           ('', 'parent', '', _('parent to choose when backing out merge')),
           ('u', 'user', '', _('record user as committer')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg backout [OPTION]... REV')),
     "bundle":
         (bundle,
          [('f', 'force', None,
            _('run even when remote repository is unrelated'))],
          _('hg bundle FILE DEST')),
     "cat":
         (cat,
          [('o', 'output', '', _('print output to file with formatted name')),
           ('r', 'rev', '', _('print the given revision')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg cat [OPTION]... FILE...')),
     "^clone":
         (clone,
          [('U', 'noupdate', None, _('do not update the new working directory')),
           ('r', 'rev', [],
            _('a changeset you would like to have after cloning')),
           ('', 'pull', None, _('use pull protocol to copy metadata')),
-          ('', 'stream', None, _('use streaming protocol (fast over LAN)')),
+          ('', 'uncompressed', None,
+           _('use uncompressed transfer (fast over LAN)')),
           ('e', 'ssh', '', _('specify ssh command to use')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg clone [OPTION]... SOURCE [DEST]')),
     "^commit|ci":
         (commit,
          [('A', 'addremove', None,
            _('mark new/missing files as added/removed before committing')),
           ('m', 'message', '', _('use <text> as commit message')),
           ('l', 'logfile', '', _('read the commit message from <file>')),
           ('d', 'date', '', _('record datecode as commit date')),
           ('u', 'user', '', _('record user as commiter')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg commit [OPTION]... [FILE]...')),
     "copy|cp":
         (copy,
          [('A', 'after', None, _('record a copy that has already occurred')),
           ('f', 'force', None,
            _('forcibly copy over an existing managed file')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns')),
           ('n', 'dry-run', None, _('do not perform actions, just print output'))],
          _('hg copy [OPTION]... [SOURCE]... DEST')),
     "debugancestor": (debugancestor, [], _('debugancestor INDEX REV1 REV2')),
     "debugcomplete":
         (debugcomplete,
          [('o', 'options', None, _('show the command options'))],
          _('debugcomplete [-o] CMD')),
     "debugrebuildstate":
         (debugrebuildstate,
          [('r', 'rev', '', _('revision to rebuild to'))],
          _('debugrebuildstate [-r REV] [REV]')),
     "debugcheckstate": (debugcheckstate, [], _('debugcheckstate')),
     "debugconfig": (debugconfig, [], _('debugconfig [NAME]...')),
     "debugsetparents": (debugsetparents, [], _('debugsetparents REV1 [REV2]')),
     "debugstate": (debugstate, [], _('debugstate')),
     "debugdata": (debugdata, [], _('debugdata FILE REV')),
     "debugindex": (debugindex, [], _('debugindex FILE')),
     "debugindexdot": (debugindexdot, [], _('debugindexdot FILE')),
     "debugrename": (debugrename, [], _('debugrename FILE [REV]')),
     "debugwalk":
         (debugwalk,
          [('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('debugwalk [OPTION]... [FILE]...')),
     "^diff":
         (diff,
          [('r', 'rev', [], _('revision')),
           ('a', 'text', None, _('treat all files as text')),
           ('p', 'show-function', None,
            _('show which function each change is in')),
           ('w', 'ignore-all-space', None,
            _('ignore white space when comparing lines')),
           ('b', 'ignore-space-change', None,
            _('ignore changes in the amount of white space')),
           ('B', 'ignore-blank-lines', None,
            _('ignore changes whose lines are all blank')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg diff [-a] [-I] [-X] [-r REV1 [-r REV2]] [FILE]...')),
     "^export":
         (export,
          [('o', 'output', '', _('print output to file with formatted name')),
           ('a', 'text', None, _('treat all files as text')),
           ('', 'switch-parent', None, _('diff against the second parent'))],
          _('hg export [-a] [-o OUTFILESPEC] REV...')),
     "debugforget|forget":
         (forget,
          [('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg forget [OPTION]... FILE...')),
     "grep":
         (grep,
          [('0', 'print0', None, _('end fields with NUL')),
           ('', 'all', None, _('print all revisions that match')),
           ('i', 'ignore-case', None, _('ignore case when matching')),
           ('l', 'files-with-matches', None,
            _('print only filenames and revs that match')),
           ('n', 'line-number', None, _('print matching line numbers')),
           ('r', 'rev', [], _('search in given revision range')),
           ('u', 'user', None, _('print user who committed change')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg grep [OPTION]... PATTERN [FILE]...')),
     "heads":
         (heads,
          [('b', 'branches', None, _('show branches')),
           ('', 'style', '', _('display using template map file')),
           ('r', 'rev', '', _('show only heads which are descendants of rev')),
           ('', 'template', '', _('display with template'))],
          _('hg heads [-b] [-r <rev>]')),
     "help": (help_, [], _('hg help [COMMAND]')),
     "identify|id": (identify, [], _('hg identify')),
     "import|patch":
         (import_,
          [('p', 'strip', 1,
            _('directory strip option for patch. This has the same\n'
              'meaning as the corresponding patch option')),
           ('m', 'message', '', _('use <text> as commit message')),
           ('b', 'base', '', _('base path')),
           ('f', 'force', None,
            _('skip check for outstanding uncommitted changes'))],
          _('hg import [-p NUM] [-b BASE] [-m MESSAGE] [-f] PATCH...')),
     "incoming|in": (incoming,
          [('M', 'no-merges', None, _('do not show merges')),
           ('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('', 'style', '', _('display using template map file')),
           ('n', 'newest-first', None, _('show newest record first')),
           ('', 'bundle', '', _('file to store the bundles into')),
           ('p', 'patch', None, _('show patch')),
           ('r', 'rev', [], _('a specific revision you would like to pull')),
           ('', 'template', '', _('display with template')),
           ('e', 'ssh', '', _('specify ssh command to use')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg incoming [-p] [-n] [-M] [-r REV]...'
            ' [--bundle FILENAME] [SOURCE]')),
     "^init":
         (init,
          [('e', 'ssh', '', _('specify ssh command to use')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg init [-e FILE] [--remotecmd FILE] [DEST]')),
     "locate":
         (locate,
          [('r', 'rev', '', _('search the repository as it stood at rev')),
           ('0', 'print0', None,
            _('end filenames with NUL, for use with xargs')),
           ('f', 'fullpath', None,
            _('print complete paths from the filesystem root')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg locate [OPTION]... [PATTERN]...')),
     "^log|history":
         (log,
          [('b', 'branches', None, _('show branches')),
           ('k', 'keyword', [], _('search for a keyword')),
           ('l', 'limit', '', _('limit number of changes displayed')),
           ('r', 'rev', [], _('show the specified revision or range')),
           ('M', 'no-merges', None, _('do not show merges')),
           ('', 'style', '', _('display using template map file')),
           ('m', 'only-merges', None, _('show only merges')),
           ('p', 'patch', None, _('show patch')),
           ('', 'template', '', _('display with template')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg log [OPTION]... [FILE]')),
     "manifest": (manifest, [], _('hg manifest [REV]')),
     "merge":
         (merge,
          [('b', 'branch', '', _('merge with head of a specific branch')),
           ('f', 'force', None, _('force a merge with outstanding changes'))],
          _('hg merge [-b TAG] [-f] [REV]')),
     "outgoing|out": (outgoing,
          [('M', 'no-merges', None, _('do not show merges')),
           ('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('p', 'patch', None, _('show patch')),
           ('', 'style', '', _('display using template map file')),
           ('r', 'rev', [], _('a specific revision you would like to push')),
           ('n', 'newest-first', None, _('show newest record first')),
           ('', 'template', '', _('display with template')),
           ('e', 'ssh', '', _('specify ssh command to use')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg outgoing [-M] [-p] [-n] [-r REV]... [DEST]')),
     "^parents":
         (parents,
          [('b', 'branches', None, _('show branches')),
           ('', 'style', '', _('display using template map file')),
           ('', 'template', '', _('display with template'))],
          _('hg parents [-b] [REV]')),
     "paths": (paths, [], _('hg paths [NAME]')),
     "^pull":
         (pull,
          [('u', 'update', None,
            _('update the working directory to tip after pull')),
           ('e', 'ssh', '', _('specify ssh command to use')),
           ('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('r', 'rev', [], _('a specific revision you would like to pull')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg pull [-u] [-r REV]... [-e FILE] [--remotecmd FILE] [SOURCE]')),
     "^push":
         (push,
          [('f', 'force', None, _('force push')),
           ('e', 'ssh', '', _('specify ssh command to use')),
           ('r', 'rev', [], _('a specific revision you would like to push')),
           ('', 'remotecmd', '',
            _('specify hg command to run on the remote side'))],
          _('hg push [-f] [-r REV]... [-e FILE] [--remotecmd FILE] [DEST]')),
     "debugrawcommit|rawcommit":
         (rawcommit,
          [('p', 'parent', [], _('parent')),
           ('d', 'date', '', _('date code')),
           ('u', 'user', '', _('user')),
           ('F', 'files', '', _('file list')),
           ('m', 'message', '', _('commit message')),
           ('l', 'logfile', '', _('commit message file'))],
          _('hg debugrawcommit [OPTION]... [FILE]...')),
     "recover": (recover, [], _('hg recover')),
     "^remove|rm":
         (remove,
          [('A', 'after', None, _('record remove that has already occurred')),
           ('f', 'force', None, _('remove file even if modified')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg remove [OPTION]... FILE...')),
     "rename|mv":
         (rename,
          [('A', 'after', None, _('record a rename that has already occurred')),
           ('f', 'force', None,
            _('forcibly copy over an existing managed file')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns')),
           ('n', 'dry-run', None, _('do not perform actions, just print output'))],
          _('hg rename [OPTION]... SOURCE... DEST')),
     "^revert":
         (revert,
          [('r', 'rev', '', _('revision to revert to')),
           ('', 'no-backup', None, _('do not save backup copies of files')),
           ('I', 'include', [], _('include names matching given patterns')),
           ('X', 'exclude', [], _('exclude names matching given patterns')),
           ('n', 'dry-run', None, _('do not perform actions, just print output'))],
          _('hg revert [-r REV] [NAME]...')),
     "rollback": (rollback, [], _('hg rollback')),
     "root": (root, [], _('hg root')),
     "^serve":
         (serve,
          [('A', 'accesslog', '', _('name of access log file to write to')),
           ('d', 'daemon', None, _('run server in background')),
           ('', 'daemon-pipefds', '', _('used internally by daemon mode')),
           ('E', 'errorlog', '', _('name of error log file to write to')),
           ('p', 'port', 0, _('port to use (default: 8000)')),
           ('a', 'address', '', _('address to use')),
           ('n', 'name', '',
            _('name to show in web pages (default: working dir)')),
           ('', 'webdir-conf', '', _('name of the webdir config file'
                                     ' (serve more than one repo)')),
           ('', 'pid-file', '', _('name of file to write process ID to')),
           ('', 'stdio', None, _('for remote clients')),
           ('t', 'templates', '', _('web templates to use')),
           ('', 'style', '', _('template style to use')),
           ('6', 'ipv6', None, _('use IPv6 in addition to IPv4'))],
          _('hg serve [OPTION]...')),
     "^status|st":
         (status,
          [('m', 'modified', None, _('show only modified files')),
           ('a', 'added', None, _('show only added files')),
           ('r', 'removed', None, _('show only removed files')),
           ('d', 'deleted', None, _('show only deleted (but tracked) files')),
           ('u', 'unknown', None, _('show only unknown (not tracked) files')),
           ('i', 'ignored', None, _('show ignored files')),
           ('n', 'no-status', None, _('hide status prefix')),
           ('0', 'print0', None,
            _('end filenames with NUL, for use with xargs')),
           ('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg status [OPTION]... [FILE]...')),
     "tag":
         (tag,
          [('l', 'local', None, _('make the tag local')),
           ('m', 'message', '', _('message for tag commit log entry')),
           ('d', 'date', '', _('record datecode as commit date')),
           ('u', 'user', '', _('record user as commiter')),
           ('r', 'rev', '', _('revision to tag'))],
          _('hg tag [-l] [-m TEXT] [-d DATE] [-u USER] [-r REV] NAME')),
     "tags": (tags, [], _('hg tags')),
     "tip":
         (tip,
          [('b', 'branches', None, _('show branches')),
           ('', 'style', '', _('display using template map file')),
           ('p', 'patch', None, _('show patch')),
           ('', 'template', '', _('display with template'))],
          _('hg tip [-b] [-p]')),
     "unbundle":
         (unbundle,
          [('u', 'update', None,
            _('update the working directory to tip after unbundle'))],
          _('hg unbundle [-u] FILE')),
     "debugundo|undo": (undo, [], _('hg undo')),
     "^update|up|checkout|co":
         (update,
          [('b', 'branch', '', _('checkout the head of a specific branch')),
           ('m', 'merge', None, _('allow merging of branches (DEPRECATED)')),
           ('C', 'clean', None, _('overwrite locally modified files')),
           ('f', 'force', None, _('force a merge with outstanding changes'))],
          _('hg update [-b TAG] [-m] [-C] [-f] [REV]')),
     "verify": (verify, [], _('hg verify')),
     "version": (show_version, [], _('hg version')),
 }
 
 globalopts = [
     ('R', 'repository', '',
      _('repository root directory or symbolic path name')),
     ('', 'cwd', '', _('change working directory')),
     ('y', 'noninteractive', None,
      _('do not prompt, assume \'yes\' for any required answers')),
     ('q', 'quiet', None, _('suppress output')),
     ('v', 'verbose', None, _('enable additional output')),
     ('', 'config', [], _('set/override config option')),
     ('', 'debug', None, _('enable debugging output')),
     ('', 'debugger', None, _('start debugger')),
     ('', 'lsprof', None, _('print improved command execution profile')),
     ('', 'traceback', None, _('print traceback on exception')),
     ('', 'time', None, _('time how long the command takes')),
     ('', 'profile', None, _('print command execution profile')),
     ('', 'version', None, _('output version information and exit')),
     ('h', 'help', None, _('display help and exit')),
 ]
 
 norepo = ("clone init version help debugancestor debugcomplete debugdata"
           " debugindex debugindexdot")
 optionalrepo = ("paths serve debugconfig")
 
 def findpossible(cmd):
     """
     Return cmd -> (aliases, command table entry)
     for each matching command.
     Return debug commands (or their aliases) only if no normal command matches.
     """
     choice = {}
     debugchoice = {}
     for e in table.keys():
         aliases = e.lstrip("^").split("|")
         found = None
         if cmd in aliases:
             found = cmd
         else:
             for a in aliases:
                 if a.startswith(cmd):
                     found = a
                     break
         if found is not None:
             if aliases[0].startswith("debug"):
                 debugchoice[found] = (aliases, table[e])
             else:
                 choice[found] = (aliases, table[e])
 
     if not choice and debugchoice:
         choice = debugchoice
 
     return choice
 
 def findcmd(cmd):
     """Return (aliases, command table entry) for command string."""
     choice = findpossible(cmd)
 
     if choice.has_key(cmd):
         return choice[cmd]
 
     if len(choice) > 1:
         clist = choice.keys()
         clist.sort()
         raise AmbiguousCommand(cmd, clist)
 
     if choice:
         return choice.values()[0]
 
     raise UnknownCommand(cmd)
 
 def catchterm(*args):
     raise util.SignalInterrupt
 
 def run():
     sys.exit(dispatch(sys.argv[1:]))
 
 class ParseError(Exception):
     """Exception raised on errors in parsing the command line."""
 
 def parse(ui, args):
     options = {}
     cmdoptions = {}
 
     try:
         args = fancyopts.fancyopts(args, globalopts, options)
     except fancyopts.getopt.GetoptError, inst:
         raise ParseError(None, inst)
 
     if args:
         cmd, args = args[0], args[1:]
         aliases, i = findcmd(cmd)
         cmd = aliases[0]
         defaults = ui.config("defaults", cmd)
         if defaults:
             args = defaults.split() + args
         c = list(i[1])
     else:
         cmd = None
         c = []
 
     # combine global options into local
     for o in globalopts:
         c.append((o[0], o[1], options[o[1]], o[3]))
 
     try:
         args = fancyopts.fancyopts(args, c, cmdoptions)
     except fancyopts.getopt.GetoptError, inst:
         raise ParseError(cmd, inst)
 
     # separate global options back out
     for o in globalopts:
         n = o[1]
         options[n] = cmdoptions[n]
         del cmdoptions[n]
 
     return (cmd, cmd and i[0] or None, args, options, cmdoptions)
 
 external = {}
 
 def findext(name):
     '''return module with given extension name'''
     try:
         return sys.modules[external[name]]
     except KeyError:
         dotname = '.' + name
         for k, v in external.iteritems():
             if k.endswith('.' + name) or v == name:
                 return sys.modules[v]
         raise KeyError(name)
 
 def dispatch(args):
     for name in 'SIGBREAK', 'SIGHUP', 'SIGTERM':
         num = getattr(signal, name, None)
         if num: signal.signal(num, catchterm)
 
     try:
         u = ui.ui(traceback='--traceback' in sys.argv[1:])
     except util.Abort, inst:
         sys.stderr.write(_("abort: %s\n") % inst)
         return -1
 
     for ext_name, load_from_name in u.extensions():
         try:
             if load_from_name:
                 # the module will be loaded in sys.modules
                 # choose an unique name so that it doesn't
                 # conflicts with other modules
                 module_name = "hgext_%s" % ext_name.replace('.', '_')
                 mod = imp.load_source(module_name, load_from_name)
             else:
                 def importh(name):
                     mod = __import__(name)
                     components = name.split('.')
                     for comp in components[1:]:
                         mod = getattr(mod, comp)
                     return mod
                 try:
                     mod = importh("hgext.%s" % ext_name)
                 except ImportError:
                     mod = importh(ext_name)
             external[ext_name] = mod.__name__
         except (util.SignalInterrupt, KeyboardInterrupt):
             raise
         except Exception, inst:
-            u.warn(_("*** failed to import extension %s: %s\n") % (x[0], inst))
+            u.warn(_("*** failed to import extension %s: %s\n") % (ext_name, inst))
             if u.print_exc():
                 return 1
 
     for name in external.itervalues():
         mod = sys.modules[name]
         uisetup = getattr(mod, 'uisetup', None)
         if uisetup:
             uisetup(u)
         cmdtable = getattr(mod, 'cmdtable', {})
         for t in cmdtable:
             if t in table:
                 u.warn(_("module %s overrides %s\n") % (name, t))
         table.update(cmdtable)
 
     try:
         cmd, func, args, options, cmdoptions = parse(u, args)
         if options["time"]:
             def get_times():
                 t = os.times()
                 if t[4] == 0.0: # Windows leaves this as zero, so use time.clock()
                     t = (t[0], t[1], t[2], t[3], time.clock())
                 return t
             s = get_times()
             def print_time():
                 t = get_times()
                 u.warn(_("Time: real %.3f secs (user %.3f+%.3f sys %.3f+%.3f)\n") %
                     (t[4]-s[4], t[0]-s[0], t[2]-s[2], t[1]-s[1], t[3]-s[3]))
             atexit.register(print_time)
 
         u.updateopts(options["verbose"], options["debug"], options["quiet"],
                      not options["noninteractive"], options["traceback"],
                      options["config"])
 
         # enter the debugger before command execution
         if options['debugger']:
             pdb.set_trace()
 
         try:
             if options['cwd']:
                 try:
                     os.chdir(options['cwd'])
                 except OSError, inst:
                     raise util.Abort('%s: %s' %
                                      (options['cwd'], inst.strerror))
 
             path = u.expandpath(options["repository"]) or ""
             repo = path and hg.repository(u, path=path) or None
 
             if options['help']:
                 return help_(u, cmd, options['version'])
             elif options['version']:
                 return show_version(u)
             elif not cmd:
                 return help_(u, 'shortlist')
 
             if cmd not in norepo.split():
                 try:
                     if not repo:
                         repo = hg.repository(u, path=path)
                     u = repo.ui
                     for name in external.itervalues():
                         mod = sys.modules[name]
                         if hasattr(mod, 'reposetup'):
                             mod.reposetup(u, repo)
                 except hg.RepoError:
                     if cmd not in optionalrepo.split():
                         raise
                 d = lambda: func(u, repo, *args, **cmdoptions)
             else:
                 d = lambda: func(u, *args, **cmdoptions)
 
             try:
                 if options['profile']:
                     import hotshot, hotshot.stats
                     prof = hotshot.Profile("hg.prof")
                     try:
                         try:
                             return prof.runcall(d)
                         except:
                             try:
                                 u.warn(_('exception raised - generating '
                                          'profile anyway\n'))
                             except:
                                 pass
                             raise
                     finally:
                         prof.close()
                         stats = hotshot.stats.load("hg.prof")
                         stats.strip_dirs()
                         stats.sort_stats('time', 'calls')
                         stats.print_stats(40)
                 elif options['lsprof']:
                     try:
                         from mercurial import lsprof
                     except ImportError:
                         raise util.Abort(_(
                             'lsprof not available - install from '
                             'http://codespeak.net/svn/user/arigo/hack/misc/lsprof/'))
                     p = lsprof.Profiler()
                     p.enable(subcalls=True)
                     try:
                         return d()
                     finally:
                         p.disable()
                         stats = lsprof.Stats(p.getstats())
                         stats.sort()
                         stats.pprint(top=10, file=sys.stderr, climit=5)
                 else:
                     return d()
             finally:
                 u.flush()
         except:
             # enter the debugger when we hit an exception
             if options['debugger']:
                 pdb.post_mortem(sys.exc_info()[2])
             u.print_exc()
             raise
     except ParseError, inst:
         if inst.args[0]:
             u.warn(_("hg %s: %s\n") % (inst.args[0], inst.args[1]))
             help_(u, inst.args[0])
         else:
             u.warn(_("hg: %s\n") % inst.args[1])
             help_(u, 'shortlist')
     except AmbiguousCommand, inst:
         u.warn(_("hg: command '%s' is ambiguous:\n    %s\n") %
                 (inst.args[0], " ".join(inst.args[1])))
     except UnknownCommand, inst:
         u.warn(_("hg: unknown command '%s'\n") % inst.args[0])
         help_(u, 'shortlist')
     except hg.RepoError, inst:
         u.warn(_("abort: %s!\n") % inst)
     except lock.LockHeld, inst:
         if inst.errno == errno.ETIMEDOUT:
             reason = _('timed out waiting for lock held by %s') % inst.locker
         else:
             reason = _('lock held by %s') % inst.locker
         u.warn(_("abort: %s: %s\n") % (inst.desc or inst.filename, reason))
     except lock.LockUnavailable, inst:
         u.warn(_("abort: could not lock %s: %s\n") %
                (inst.desc or inst.filename, inst.strerror))
     except revlog.RevlogError, inst:
         u.warn(_("abort: "), inst, "!\n")
     except util.SignalInterrupt:
         u.warn(_("killed!\n"))
     except KeyboardInterrupt:
         try:
             u.warn(_("interrupted!\n"))
         except IOError, inst:
             if inst.errno == errno.EPIPE:
                 if u.debugflag:
                     u.warn(_("\nbroken pipe\n"))
             else:
                 raise
     except IOError, inst:
         if hasattr(inst, "code"):
             u.warn(_("abort: %s\n") % inst)
         elif hasattr(inst, "reason"):
             u.warn(_("abort: error: %s\n") % inst.reason[1])
         elif hasattr(inst, "args") and inst[0] == errno.EPIPE:
             if u.debugflag:
                 u.warn(_("broken pipe\n"))
         elif getattr(inst, "strerror", None):
             if getattr(inst, "filename", None):
                 u.warn(_("abort: %s - %s\n") % (inst.strerror, inst.filename))
             else:
                 u.warn(_("abort: %s\n") % inst.strerror)
         else:
             raise
     except OSError, inst:
         if hasattr(inst, "filename"):
             u.warn(_("abort: %s: %s\n") % (inst.strerror, inst.filename))
         else:
             u.warn(_("abort: %s\n") % inst.strerror)
     except util.Abort, inst:
         u.warn(_('abort: '), inst.args[0] % inst.args[1:], '\n')
     except TypeError, inst:
         # was this an argument error?
         tb = traceback.extract_tb(sys.exc_info()[2])
         if len(tb) > 2: # no
             raise
         u.debug(inst, "\n")
         u.warn(_("%s: invalid arguments\n") % cmd)
         help_(u, cmd)
     except SystemExit, inst:
         # Commands shouldn't sys.exit directly, but give a return code.
         # Just in case catch this and and pass exit code to caller.
         return inst.code
     except:
         u.warn(_("** unknown exception encountered, details follow\n"))
-        u.warn(_("** report bug details to [e-mail]\n"))
+        u.warn(_("** report bug details to "
+                 "http://www.selenic.com/mercurial/bts\n"))
+        u.warn(_("** or [e-mail]\n"))
         u.warn(_("** Mercurial Distributed SCM (version %s)\n")
                % version.get_version())
         raise
 
     return -1

mercurial/context.py

@@ -1,124 +1,126 b''
 # context.py - changeset and file context objects 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.
 
 class changectx(object):
     """A changecontext object makes access to data related to a particular
     changeset convenient."""
     def __init__(self, repo, changeid):
         """changeid is a revision number, node, or tag"""
         self._repo = repo
         self._id = changeid
 
         self._node = self._repo.lookup(self._id)
         self._rev = self._repo.changelog.rev(self._node)
 
     def changeset(self):
         try:
             return self._changeset
         except AttributeError:
             self._changeset = self._repo.changelog.read(self.node())
             return self._changeset
 
     def manifest(self):
         try:
             return self._manifest
         except AttributeError:
             self._manifest = self._repo.manifest.read(self.changeset()[0])
             return self._manifest
 
     def rev(self): return self._rev
     def node(self): return self._node
     def user(self): return self.changeset()[1]
     def date(self): return self.changeset()[2]
     def changedfiles(self): return self.changeset()[3]
     def description(self): return self.changeset()[4]
 
     def parents(self):
         """return contexts for each parent changeset"""
-        p = self.repo.changelog.parents(self._node)
+        p = self._repo.changelog.parents(self._node)
         return [ changectx(self._repo, x) for x in p ]
 
     def children(self):
         """return contexts for each child changeset"""
-        c = self.repo.changelog.children(self._node)
+        c = self._repo.changelog.children(self._node)
         return [ changectx(self._repo, x) for x in c ]
 
     def filenode(self, path):
         node, flag = self._repo.manifest.find(self.changeset()[0], path)
         return node
 
-    def filectx(self, path):
+    def filectx(self, path, fileid=None):
         """get a file context from this changeset"""
-        return filectx(self._repo, path, fileid=self.filenode(path))
+        if fileid is None:
+            fileid = self.filenode(path)
+        return filectx(self._repo, path, fileid=fileid)
 
     def filectxs(self):
         """generate a file context for each file in this changeset's
            manifest"""
         mf = self.manifest()
         m = mf.keys()
         m.sort()
         for f in m:
             yield self.filectx(f, fileid=mf[f])
 
 class filectx(object):
     """A filecontext object makes access to data related to a particular
        filerevision convenient."""
     def __init__(self, repo, path, changeid=None, fileid=None):
         """changeid can be a changeset revision, node, or tag.
            fileid can be a file revision or node."""
         self._repo = repo
         self._path = path
         self._id = changeid
         self._fileid = fileid
 
         if self._id:
             # if given a changeset id, go ahead and look up the file
-            self._changeset = changectx(repo, self._id)
+            self._changeset = self._repo.changelog.read(self._id)
             node, flag = self._repo.manifest.find(self._changeset[0], path)
-            self._node = node
-            self._filelog = self.repo.file(self._path)
+            self._filelog = self._repo.file(self._path)
+            self._filenode = node
         elif self._fileid:
             # else be lazy
             self._filelog = self._repo.file(self._path)
             self._filenode = self._filelog.lookup(self._fileid)
         self._filerev = self._filelog.rev(self._filenode)
 
     def changeset(self):
         try:
             return self._changeset
         except AttributeError:
             self._changeset = self._repo.changelog.read(self.node())
             return self._changeset
 
     def filerev(self): return self._filerev
     def filenode(self): return self._filenode
     def filelog(self): return self._filelog
 
     def rev(self): return self.changeset().rev()
     def node(self): return self.changeset().node()
     def user(self): return self.changeset().user()
     def date(self): return self.changeset().date()
     def files(self): return self.changeset().files()
     def description(self): return self.changeset().description()
     def manifest(self): return self.changeset().manifest()
 
     def data(self): return self._filelog.read(self._filenode)
     def metadata(self): return self._filelog.readmeta(self._filenode)
     def renamed(self): return self._filelog.renamed(self._filenode)
 
     def parents(self):
         # need to fix for renames
         p = self._filelog.parents(self._filenode)
         return [ filectx(self._repo, self._path, fileid=x) for x in p ]
 
     def children(self):
         # hard for renames
         c = self._filelog.children(self._filenode)
         return [ filectx(self._repo, self._path, fileid=x) for x in c ]
 
     def annotate(self):
         return self._filelog.annotate(self._filenode)

mercurial/hg.py

@@ -1,208 +1,209 b''
 # hg.py - repository classes 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 node import *
 from repo import *
 from demandload import *
 from i18n import gettext as _
 demandload(globals(), "localrepo bundlerepo httprepo sshrepo statichttprepo")
 demandload(globals(), "errno lock os shutil util")
 
 def bundle(ui, path):
     if path.startswith('bundle://'):
         path = path[9:]
     else:
         path = path[7:]
     s = path.split("+", 1)
     if len(s) == 1:
         repopath, bundlename = "", s[0]
     else:
         repopath, bundlename = s
     return bundlerepo.bundlerepository(ui, repopath, bundlename)
 
 def hg(ui, path):
     ui.warn(_("hg:// syntax is deprecated, please use http:// instead\n"))
     return httprepo.httprepository(ui, path.replace("hg://", "http://"))
 
 def local_(ui, path, create=0):
     if path.startswith('file:'):
         path = path[5:]
     return localrepo.localrepository(ui, path, create)
 
 def ssh_(ui, path, create=0):
     return sshrepo.sshrepository(ui, path, create)
 
 def old_http(ui, path):
     ui.warn(_("old-http:// syntax is deprecated, "
               "please use static-http:// instead\n"))
     return statichttprepo.statichttprepository(
         ui, path.replace("old-http://", "http://"))
 
 def static_http(ui, path):
     return statichttprepo.statichttprepository(
         ui, path.replace("static-http://", "http://"))
 
 schemes = {
     'bundle': bundle,
     'file': local_,
     'hg': hg,
     'http': lambda ui, path: httprepo.httprepository(ui, path),
     'https': lambda ui, path: httprepo.httpsrepository(ui, path),
     'old-http': old_http,
     'ssh': ssh_,
     'static-http': static_http,
     }
 
 def repository(ui, path=None, create=0):
     scheme = None
     if path:
         c = path.find(':')
         if c > 0:
             scheme = schemes.get(path[:c])
     else:
         path = ''
     ctor = scheme or schemes['file']
     if create:
         try:
             return ctor(ui, path, create)
         except TypeError:
             raise util.Abort(_('cannot create new repository over "%s" protocol') %
                              scheme)
     return ctor(ui, path)
 
 def clone(ui, source, dest=None, pull=False, rev=None, update=True,
           stream=False):
     """Make a copy of an existing repository.
 
     Create a copy of an existing repository in a new directory.  The
     source and destination are URLs, as passed to the repository
     function.  Returns a pair of repository objects, the source and
     newly created destination.
 
     The location of the source is added to the new repository's
     .hg/hgrc file, as the default to be used for future pulls and
     pushes.
 
     If an exception is raised, the partly cloned/updated destination
     repository will be deleted.
 
     Keyword arguments:
 
     dest: URL of destination repository to create (defaults to base
     name of source repository)
 
     pull: always pull from source repository, even in local case
 
-    stream: stream from repository (fast over LAN, slow over WAN)
+    stream: stream raw data uncompressed from repository (fast over
+    LAN, slow over WAN)
 
     rev: revision to clone up to (implies pull=True)
 
     update: update working directory after clone completes, if
     destination is local repository
     """
     if dest is None:
         dest = os.path.basename(os.path.normpath(source))
 
     if os.path.exists(dest):
         raise util.Abort(_("destination '%s' already exists"), dest)
 
     class DirCleanup(object):
         def __init__(self, dir_):
             self.rmtree = shutil.rmtree
             self.dir_ = dir_
         def close(self):
             self.dir_ = None
         def __del__(self):
             if self.dir_:
                 self.rmtree(self.dir_, True)
 
     src_repo = repository(ui, source)
 
     dest_repo = None
     try:
         dest_repo = repository(ui, dest)
         raise util.Abort(_("destination '%s' already exists." % dest))
     except RepoError:
         dest_repo = repository(ui, dest, create=True)
 
     dest_path = None
     dir_cleanup = None
     if dest_repo.local():
         dest_path = os.path.realpath(dest)
         dir_cleanup = DirCleanup(dest_path)
 
     abspath = source
     copy = False
     if src_repo.local() and dest_repo.local():
         abspath = os.path.abspath(source)
         copy = not pull and not rev
 
     src_lock, dest_lock = None, None
     if copy:
         try:
             # we use a lock here because if we race with commit, we
             # can end up with extra data in the cloned revlogs that's
             # not pointed to by changesets, thus causing verify to
             # fail
             src_lock = src_repo.lock()
         except lock.LockException:
             copy = False
 
     if copy:
         # we lock here to avoid premature writing to the target
         dest_lock = lock.lock(os.path.join(dest_path, ".hg", "lock"))
 
-	# we need to remove the (empty) data dir in dest so copyfiles
-	# can do its work
-	os.rmdir(os.path.join(dest_path, ".hg", "data"))
+        # we need to remove the (empty) data dir in dest so copyfiles
+        # can do its work
+        os.rmdir(os.path.join(dest_path, ".hg", "data"))
         files = "data 00manifest.d 00manifest.i 00changelog.d 00changelog.i"
         for f in files.split():
             src = os.path.join(source, ".hg", f)
             dst = os.path.join(dest_path, ".hg", f)
             try:
                 util.copyfiles(src, dst)
             except OSError, inst:
                 if inst.errno != errno.ENOENT:
                     raise
 
-	# we need to re-init the repo after manually copying the data
-	# into it
+        # we need to re-init the repo after manually copying the data
+        # into it
         dest_repo = repository(ui, dest)
 
     else:
         revs = None
         if rev:
             if not src_repo.local():
                 raise util.Abort(_("clone by revision not supported yet "
                                    "for remote repositories"))
             revs = [src_repo.lookup(r) for r in rev]
 
         if dest_repo.local():
             dest_repo.clone(src_repo, heads=revs, stream=stream)
         elif src_repo.local():
             src_repo.push(dest_repo, revs=revs)
         else:
             raise util.Abort(_("clone from remote to remote not supported"))
 
     if src_lock:
         src_lock.release()
 
     if dest_repo.local():
         fp = dest_repo.opener("hgrc", "w", text=True)
         fp.write("[paths]\n")
         fp.write("default = %s\n" % abspath)
         fp.close()
 
         if dest_lock:
             dest_lock.release()
 
         if update:
             dest_repo.update(dest_repo.changelog.tip())
     if dir_cleanup:
         dir_cleanup.close()
 
     return src_repo, dest_repo

mercurial/hgweb/hgweb_mod.py

@@ -1,957 +1,960 b''
 # hgweb/hgweb_mod.py - Web interface for a repository.
 #
 # Copyright 21 May 2005 - (c) 2005 Jake Edge <[e-mail]>
 # 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.
 
 import os
 import os.path
 import mimetypes
 from mercurial.demandload import demandload
 demandload(globals(), "re zlib ConfigParser mimetools cStringIO sys tempfile")
 demandload(globals(), "mercurial:mdiff,ui,hg,util,archival,streamclone")
 demandload(globals(), "mercurial:templater")
 demandload(globals(), "mercurial.hgweb.common:get_mtime,staticfile")
 from mercurial.node import *
 from mercurial.i18n import gettext as _
 
 def _up(p):
     if p[0] != "/":
         p = "/" + p
     if p[-1] == "/":
         p = p[:-1]
     up = os.path.dirname(p)
     if up == "/":
         return "/"
     return up + "/"
 
 class hgweb(object):
     def __init__(self, repo, name=None):
         if type(repo) == type(""):
             self.repo = hg.repository(ui.ui(), repo)
         else:
             self.repo = repo
 
         self.mtime = -1
         self.reponame = name
         self.archives = 'zip', 'gz', 'bz2'
         self.templatepath = self.repo.ui.config("web", "templates",
                                                 templater.templatepath())
 
     def refresh(self):
         mtime = get_mtime(self.repo.root)
         if mtime != self.mtime:
             self.mtime = mtime
             self.repo = hg.repository(self.repo.ui, self.repo.root)
             self.maxchanges = int(self.repo.ui.config("web", "maxchanges", 10))
             self.maxfiles = int(self.repo.ui.config("web", "maxfiles", 10))
             self.allowpull = self.repo.ui.configbool("web", "allowpull", True)
 
     def archivelist(self, nodeid):
         allowed = self.repo.ui.configlist("web", "allow_archive")
         for i in self.archives:
             if i in allowed or self.repo.ui.configbool("web", "allow" + i):
                 yield {"type" : i, "node" : nodeid, "url": ""}
 
     def listfiles(self, files, mf):
         for f in files[:self.maxfiles]:
             yield self.t("filenodelink", node=hex(mf[f]), file=f)
         if len(files) > self.maxfiles:
             yield self.t("fileellipses")
 
     def listfilediffs(self, files, changeset):
         for f in files[:self.maxfiles]:
             yield self.t("filedifflink", node=hex(changeset), file=f)
         if len(files) > self.maxfiles:
             yield self.t("fileellipses")
 
     def siblings(self, siblings=[], rev=None, hiderev=None, **args):
         if not rev:
             rev = lambda x: ""
         siblings = [s for s in siblings if s != nullid]
         if len(siblings) == 1 and rev(siblings[0]) == hiderev:
             return
         for s in siblings:
             yield dict(node=hex(s), rev=rev(s), **args)
 
     def renamelink(self, fl, node):
         r = fl.renamed(node)
         if r:
             return [dict(file=r[0], node=hex(r[1]))]
         return []
 
     def showtag(self, t1, node=nullid, **args):
         for t in self.repo.nodetags(node):
              yield self.t(t1, tag=t, **args)
 
     def diff(self, node1, node2, files):
         def filterfiles(filters, files):
             l = [x for x in files if x in filters]
 
             for t in filters:
                 if t and t[-1] != os.sep:
                     t += os.sep
                 l += [x for x in files if x.startswith(t)]
             return l
 
         parity = [0]
         def diffblock(diff, f, fn):
             yield self.t("diffblock",
                          lines=prettyprintlines(diff),
                          parity=parity[0],
                          file=f,
                          filenode=hex(fn or nullid))
             parity[0] = 1 - parity[0]
 
         def prettyprintlines(diff):
             for l in diff.splitlines(1):
                 if l.startswith('+'):
                     yield self.t("difflineplus", line=l)
                 elif l.startswith('-'):
                     yield self.t("difflineminus", line=l)
                 elif l.startswith('@'):
                     yield self.t("difflineat", line=l)
                 else:
                     yield self.t("diffline", line=l)
 
         r = self.repo
         cl = r.changelog
         mf = r.manifest
         change1 = cl.read(node1)
         change2 = cl.read(node2)
         mmap1 = mf.read(change1[0])
         mmap2 = mf.read(change2[0])
         date1 = util.datestr(change1[2])
         date2 = util.datestr(change2[2])
 
         modified, added, removed, deleted, unknown = r.changes(node1, node2)
         if files:
             modified, added, removed = map(lambda x: filterfiles(files, x),
                                            (modified, added, removed))
 
         diffopts = self.repo.ui.diffopts()
         showfunc = diffopts['showfunc']
         ignorews = diffopts['ignorews']
         ignorewsamount = diffopts['ignorewsamount']
         ignoreblanklines = diffopts['ignoreblanklines']
         for f in modified:
             to = r.file(f).read(mmap1[f])
             tn = r.file(f).read(mmap2[f])
             yield diffblock(mdiff.unidiff(to, date1, tn, date2, f,
                             showfunc=showfunc, ignorews=ignorews,
                             ignorewsamount=ignorewsamount,
                             ignoreblanklines=ignoreblanklines), f, tn)
         for f in added:
             to = None
             tn = r.file(f).read(mmap2[f])
             yield diffblock(mdiff.unidiff(to, date1, tn, date2, f,
                             showfunc=showfunc, ignorews=ignorews,
                             ignorewsamount=ignorewsamount,
                             ignoreblanklines=ignoreblanklines), f, tn)
         for f in removed:
             to = r.file(f).read(mmap1[f])
             tn = None
             yield diffblock(mdiff.unidiff(to, date1, tn, date2, f,
                             showfunc=showfunc, ignorews=ignorews,
                             ignorewsamount=ignorewsamount,
                             ignoreblanklines=ignoreblanklines), f, tn)
 
     def changelog(self, pos):
         def changenav(**map):
             def seq(factor, maxchanges=None):
                 if maxchanges:
                     yield maxchanges
                     if maxchanges >= 20 and maxchanges <= 40:
                         yield 50
                 else:
                     yield 1 * factor
                     yield 3 * factor
                 for f in seq(factor * 10):
                     yield f
 
             l = []
             last = 0
             for f in seq(1, self.maxchanges):
                 if f < self.maxchanges or f <= last:
                     continue
                 if f > count:
                     break
                 last = f
                 r = "%d" % f
                 if pos + f < count:
                     l.append(("+" + r, pos + f))
                 if pos - f >= 0:
                     l.insert(0, ("-" + r, pos - f))
 
             yield {"rev": 0, "label": "(0)"}
 
             for label, rev in l:
                 yield {"label": label, "rev": rev}
 
             yield {"label": "tip", "rev": "tip"}
 
         def changelist(**map):
             parity = (start - end) & 1
             cl = self.repo.changelog
             l = [] # build a list in forward order for efficiency
             for i in range(start, end):
                 n = cl.node(i)
                 changes = cl.read(n)
                 hn = hex(n)
 
                 l.insert(0, {"parity": parity,
                              "author": changes[1],
                              "parent": self.siblings(cl.parents(n), cl.rev,
                                                      cl.rev(n) - 1),
                              "child": self.siblings(cl.children(n), cl.rev,
                                                     cl.rev(n) + 1),
                              "changelogtag": self.showtag("changelogtag",n),
                              "manifest": hex(changes[0]),
                              "desc": changes[4],
                              "date": changes[2],
                              "files": self.listfilediffs(changes[3], n),
                              "rev": i,
                              "node": hn})
                 parity = 1 - parity
 
             for e in l:
                 yield e
 
         cl = self.repo.changelog
         mf = cl.read(cl.tip())[0]
         count = cl.count()
         start = max(0, pos - self.maxchanges + 1)
         end = min(count, start + self.maxchanges)
         pos = end - 1
 
         yield self.t('changelog',
                      changenav=changenav,
                      manifest=hex(mf),
                      rev=pos, changesets=count, entries=changelist,
                      archives=self.archivelist("tip"))
 
     def search(self, query):
 
         def changelist(**map):
             cl = self.repo.changelog
             count = 0
             qw = query.lower().split()
 
             def revgen():
                 for i in range(cl.count() - 1, 0, -100):
                     l = []
                     for j in range(max(0, i - 100), i):
                         n = cl.node(j)
                         changes = cl.read(n)
                         l.append((n, j, changes))
                     l.reverse()
                     for e in l:
                         yield e
 
             for n, i, changes in revgen():
                 miss = 0
                 for q in qw:
                     if not (q in changes[1].lower() or
                             q in changes[4].lower() or
                             q in " ".join(changes[3][:20]).lower()):
                         miss = 1
                         break
                 if miss:
                     continue
 
                 count += 1
                 hn = hex(n)
 
                 yield self.t('searchentry',
                              parity=count & 1,
                              author=changes[1],
                              parent=self.siblings(cl.parents(n), cl.rev),
                              child=self.siblings(cl.children(n), cl.rev),
                              changelogtag=self.showtag("changelogtag",n),
                              manifest=hex(changes[0]),
                              desc=changes[4],
                              date=changes[2],
                              files=self.listfilediffs(changes[3], n),
                              rev=i,
                              node=hn)
 
                 if count >= self.maxchanges:
                     break
 
         cl = self.repo.changelog
         mf = cl.read(cl.tip())[0]
 
         yield self.t('search',
                      query=query,
                      manifest=hex(mf),
                      entries=changelist)
 
     def changeset(self, nodeid):
         cl = self.repo.changelog
         n = self.repo.lookup(nodeid)
         nodeid = hex(n)
         changes = cl.read(n)
         p1 = cl.parents(n)[0]
 
         files = []
         mf = self.repo.manifest.read(changes[0])
         for f in changes[3]:
             files.append(self.t("filenodelink",
                                 filenode=hex(mf.get(f, nullid)), file=f))
 
         def diff(**map):
             yield self.diff(p1, n, None)
 
         yield self.t('changeset',
                      diff=diff,
                      rev=cl.rev(n),
                      node=nodeid,
                      parent=self.siblings(cl.parents(n), cl.rev),
                      child=self.siblings(cl.children(n), cl.rev),
                      changesettag=self.showtag("changesettag",n),
                      manifest=hex(changes[0]),
                      author=changes[1],
                      desc=changes[4],
                      date=changes[2],
                      files=files,
                      archives=self.archivelist(nodeid))
 
     def filelog(self, f, filenode):
         cl = self.repo.changelog
         fl = self.repo.file(f)
         filenode = hex(fl.lookup(filenode))
         count = fl.count()
 
         def entries(**map):
             l = []
             parity = (count - 1) & 1
 
             for i in range(count):
                 n = fl.node(i)
                 lr = fl.linkrev(n)
                 cn = cl.node(lr)
                 cs = cl.read(cl.node(lr))
 
                 l.insert(0, {"parity": parity,
                              "filenode": hex(n),
                              "filerev": i,
                              "file": f,
                              "node": hex(cn),
                              "author": cs[1],
                              "date": cs[2],
                              "rename": self.renamelink(fl, n),
                              "parent": self.siblings(fl.parents(n),
                                                      fl.rev, file=f),
                              "child": self.siblings(fl.children(n),
                                                     fl.rev, file=f),
                              "desc": cs[4]})
                 parity = 1 - parity
 
             for e in l:
                 yield e
 
         yield self.t("filelog", file=f, filenode=filenode, entries=entries)
 
     def filerevision(self, f, node):
         fl = self.repo.file(f)
         n = fl.lookup(node)
         node = hex(n)
         text = fl.read(n)
         changerev = fl.linkrev(n)
         cl = self.repo.changelog
         cn = cl.node(changerev)
         cs = cl.read(cn)
         mfn = cs[0]
 
         mt = mimetypes.guess_type(f)[0]
         rawtext = text
         if util.binary(text):
             mt = mt or 'application/octet-stream'
             text = "(binary:%s)" % mt
         mt = mt or 'text/plain'
 
         def lines():
             for l, t in enumerate(text.splitlines(1)):
                 yield {"line": t,
                        "linenumber": "% 6d" % (l + 1),
                        "parity": l & 1}
 
         yield self.t("filerevision",
                      file=f,
                      filenode=node,
                      path=_up(f),
                      text=lines(),
                      raw=rawtext,
                      mimetype=mt,
                      rev=changerev,
                      node=hex(cn),
                      manifest=hex(mfn),
                      author=cs[1],
                      date=cs[2],
                      parent=self.siblings(fl.parents(n), fl.rev, file=f),
                      child=self.siblings(fl.children(n), fl.rev, file=f),
                      rename=self.renamelink(fl, n),
                      permissions=self.repo.manifest.readflags(mfn)[f])
 
     def fileannotate(self, f, node):
         bcache = {}
         ncache = {}
         fl = self.repo.file(f)
         n = fl.lookup(node)
         node = hex(n)
         changerev = fl.linkrev(n)
 
         cl = self.repo.changelog
         cn = cl.node(changerev)
         cs = cl.read(cn)
         mfn = cs[0]
 
         def annotate(**map):
             parity = 1
             last = None
             for r, l in fl.annotate(n):
                 try:
                     cnode = ncache[r]
                 except KeyError:
                     cnode = ncache[r] = self.repo.changelog.node(r)
 
                 try:
                     name = bcache[r]
                 except KeyError:
                     cl = self.repo.changelog.read(cnode)
                     bcache[r] = name = self.repo.ui.shortuser(cl[1])
 
                 if last != cnode:
                     parity = 1 - parity
                     last = cnode
 
                 yield {"parity": parity,
                        "node": hex(cnode),
                        "rev": r,
                        "author": name,
                        "file": f,
                        "line": l}
 
         yield self.t("fileannotate",
                      file=f,
                      filenode=node,
                      annotate=annotate,
                      path=_up(f),
                      rev=changerev,
                      node=hex(cn),
                      manifest=hex(mfn),
                      author=cs[1],
                      date=cs[2],
                      rename=self.renamelink(fl, n),
                      parent=self.siblings(fl.parents(n), fl.rev, file=f),
                      child=self.siblings(fl.children(n), fl.rev, file=f),
                      permissions=self.repo.manifest.readflags(mfn)[f])
 
     def manifest(self, mnode, path):
         man = self.repo.manifest
         mn = man.lookup(mnode)
         mnode = hex(mn)
         mf = man.read(mn)
         rev = man.rev(mn)
         changerev = man.linkrev(mn)
         node = self.repo.changelog.node(changerev)
         mff = man.readflags(mn)
 
         files = {}
 
         p = path[1:]
         if p and p[-1] != "/":
             p += "/"
         l = len(p)
 
         for f,n in mf.items():
             if f[:l] != p:
                 continue
             remain = f[l:]
             if "/" in remain:
                 short = remain[:remain.index("/") + 1] # bleah
                 files[short] = (f, None)
             else:
                 short = os.path.basename(remain)
                 files[short] = (f, n)
 
         def filelist(**map):
             parity = 0
             fl = files.keys()
             fl.sort()
             for f in fl:
                 full, fnode = files[f]
                 if not fnode:
                     continue
 
                 yield {"file": full,
                        "manifest": mnode,
                        "filenode": hex(fnode),
                        "parity": parity,
                        "basename": f,
                        "permissions": mff[full]}
                 parity = 1 - parity
 
         def dirlist(**map):
             parity = 0
             fl = files.keys()
             fl.sort()
             for f in fl:
                 full, fnode = files[f]
                 if fnode:
                     continue
 
                 yield {"parity": parity,
                        "path": os.path.join(path, f),
                        "manifest": mnode,
                        "basename": f[:-1]}
                 parity = 1 - parity
 
         yield self.t("manifest",
                      manifest=mnode,
                      rev=rev,
                      node=hex(node),
                      path=path,
                      up=_up(path),
                      fentries=filelist,
                      dentries=dirlist,
                      archives=self.archivelist(hex(node)))
 
     def tags(self):
         cl = self.repo.changelog
         mf = cl.read(cl.tip())[0]
 
         i = self.repo.tagslist()
         i.reverse()
 
         def entries(notip=False, **map):
             parity = 0
             for k,n in i:
                 if notip and k == "tip": continue
                 yield {"parity": parity,
                        "tag": k,
                        "tagmanifest": hex(cl.read(n)[0]),
                        "date": cl.read(n)[2],
                        "node": hex(n)}
                 parity = 1 - parity
 
         yield self.t("tags",
                      manifest=hex(mf),
                      entries=lambda **x: entries(False, **x),
                      entriesnotip=lambda **x: entries(True, **x))
 
     def summary(self):
         cl = self.repo.changelog
         mf = cl.read(cl.tip())[0]
 
         i = self.repo.tagslist()
         i.reverse()
 
         def tagentries(**map):
             parity = 0
             count = 0
             for k,n in i:
                 if k == "tip": # skip tip
                     continue;
 
                 count += 1
                 if count > 10: # limit to 10 tags
                     break;
 
                 c = cl.read(n)
                 m = c[0]
                 t = c[2]
 
                 yield self.t("tagentry",
                              parity = parity,
                              tag = k,
                              node = hex(n),
                              date = t,
                              tagmanifest = hex(m))
                 parity = 1 - parity
 
         def changelist(**map):
             parity = 0
             cl = self.repo.changelog
             l = [] # build a list in forward order for efficiency
             for i in range(start, end):
                 n = cl.node(i)
                 changes = cl.read(n)
                 hn = hex(n)
                 t = changes[2]
 
                 l.insert(0, self.t(
                     'shortlogentry',
                     parity = parity,
                     author = changes[1],
                     manifest = hex(changes[0]),
                     desc = changes[4],
                     date = t,
                     rev = i,
                     node = hn))
                 parity = 1 - parity
 
             yield l
 
         cl = self.repo.changelog
         mf = cl.read(cl.tip())[0]
         count = cl.count()
         start = max(0, count - self.maxchanges)
         end = min(count, start + self.maxchanges)
 
         yield self.t("summary",
                  desc = self.repo.ui.config("web", "description", "unknown"),
                  owner = (self.repo.ui.config("ui", "username") or # preferred
                           self.repo.ui.config("web", "contact") or # deprecated
                           self.repo.ui.config("web", "author", "unknown")), # also
                  lastchange = (0, 0), # FIXME
                  manifest = hex(mf),
                  tags = tagentries,
                  shortlog = changelist)
 
     def filediff(self, file, changeset):
         cl = self.repo.changelog
         n = self.repo.lookup(changeset)
         changeset = hex(n)
         p1 = cl.parents(n)[0]
         cs = cl.read(n)
         mf = self.repo.manifest.read(cs[0])
 
         def diff(**map):
             yield self.diff(p1, n, [file])
 
         yield self.t("filediff",
                      file=file,
                      filenode=hex(mf.get(file, nullid)),
                      node=changeset,
                      rev=self.repo.changelog.rev(n),
                      parent=self.siblings(cl.parents(n), cl.rev),
                      child=self.siblings(cl.children(n), cl.rev),
                      diff=diff)
 
     archive_specs = {
         'bz2': ('application/x-tar', 'tbz2', '.tar.bz2', None),
         'gz': ('application/x-tar', 'tgz', '.tar.gz', None),
         'zip': ('application/zip', 'zip', '.zip', None),
         }
 
     def archive(self, req, cnode, type_):
         reponame = re.sub(r"\W+", "-", os.path.basename(self.reponame))
         name = "%s-%s" % (reponame, short(cnode))
         mimetype, artype, extension, encoding = self.archive_specs[type_]
         headers = [('Content-type', mimetype),
                    ('Content-disposition', 'attachment; filename=%s%s' %
                     (name, extension))]
         if encoding:
             headers.append(('Content-encoding', encoding))
         req.header(headers)
         archival.archive(self.repo, req.out, cnode, artype, prefix=name)
 
     # add tags to things
     # tags -> list of changesets corresponding to tags
     # find tag, changeset, file
 
     def cleanpath(self, path):
         p = util.normpath(path)
         if p[:2] == "..":
             raise Exception("suspicious path")
         return p
 
     def run(self):
         if not os.environ.get('GATEWAY_INTERFACE', '').startswith("CGI/1."):
             raise RuntimeError("This function is only intended to be called while running as a CGI script.")
         import mercurial.hgweb.wsgicgi as wsgicgi
         from request import wsgiapplication
         def make_web_app():
             return self
         wsgicgi.launch(wsgiapplication(make_web_app))
 
     def run_wsgi(self, req):
         def header(**map):
             header_file = cStringIO.StringIO(''.join(self.t("header", **map)))
             msg = mimetools.Message(header_file, 0)
             req.header(msg.items())
             yield header_file.read()
 
         def rawfileheader(**map):
             req.header([('Content-type', map['mimetype']),
                         ('Content-disposition', 'filename=%s' % map['file']),
                         ('Content-length', str(len(map['raw'])))])
             yield ''
 
         def footer(**map):
             yield self.t("footer",
                          motd=self.repo.ui.config("web", "motd", ""),
                          **map)
 
         def expand_form(form):
             shortcuts = {
                 'cl': [('cmd', ['changelog']), ('rev', None)],
                 'cs': [('cmd', ['changeset']), ('node', None)],
                 'f': [('cmd', ['file']), ('filenode', None)],
                 'fl': [('cmd', ['filelog']), ('filenode', None)],
                 'fd': [('cmd', ['filediff']), ('node', None)],
                 'fa': [('cmd', ['annotate']), ('filenode', None)],
                 'mf': [('cmd', ['manifest']), ('manifest', None)],
                 'ca': [('cmd', ['archive']), ('node', None)],
                 'tags': [('cmd', ['tags'])],
                 'tip': [('cmd', ['changeset']), ('node', ['tip'])],
                 'static': [('cmd', ['static']), ('file', None)]
             }
 
             for k in shortcuts.iterkeys():
                 if form.has_key(k):
                     for name, value in shortcuts[k]:
                         if value is None:
                             value = form[k]
                         form[name] = value
                     del form[k]
 
         self.refresh()
 
         expand_form(req.form)
 
         m = os.path.join(self.templatepath, "map")
         style = self.repo.ui.config("web", "style", "")
         if req.form.has_key('style'):
             style = req.form['style'][0]
         if style:
             b = os.path.basename("map-" + style)
             p = os.path.join(self.templatepath, b)
             if os.path.isfile(p):
                 m = p
 
         port = req.env["SERVER_PORT"]
         port = port != "80" and (":" + port) or ""
         uri = req.env["REQUEST_URI"]
         if "?" in uri:
             uri = uri.split("?")[0]
         url = "http://%s%s%s" % (req.env["SERVER_NAME"], port, uri)
         if not self.reponame:
             self.reponame = (self.repo.ui.config("web", "name")
                              or uri.strip('/') or self.repo.root)
 
         self.t = templater.templater(m, templater.common_filters,
                                      defaults={"url": url,
                                                "repo": self.reponame,
                                                "header": header,
                                                "footer": footer,
                                                "rawfileheader": rawfileheader,
                                                })
 
         if not req.form.has_key('cmd'):
             req.form['cmd'] = [self.t.cache['default'],]
 
         cmd = req.form['cmd'][0]
 
         method = getattr(self, 'do_' + cmd, None)
         if method:
             method(req)
         else:
             req.write(self.t("error"))
 
     def do_changelog(self, req):
         hi = self.repo.changelog.count() - 1
         if req.form.has_key('rev'):
             hi = req.form['rev'][0]
             try:
                 hi = self.repo.changelog.rev(self.repo.lookup(hi))
             except hg.RepoError:
                 req.write(self.search(hi)) # XXX redirect to 404 page?
                 return
 
         req.write(self.changelog(hi))
 
     def do_changeset(self, req):
         req.write(self.changeset(req.form['node'][0]))
 
     def do_manifest(self, req):
         req.write(self.manifest(req.form['manifest'][0],
                                 self.cleanpath(req.form['path'][0])))
 
     def do_tags(self, req):
         req.write(self.tags())
 
     def do_summary(self, req):
         req.write(self.summary())
 
     def do_filediff(self, req):
         req.write(self.filediff(self.cleanpath(req.form['file'][0]),
                                 req.form['node'][0]))
 
     def do_file(self, req):
         req.write(self.filerevision(self.cleanpath(req.form['file'][0]),
                                     req.form['filenode'][0]))
 
     def do_annotate(self, req):
         req.write(self.fileannotate(self.cleanpath(req.form['file'][0]),
                                     req.form['filenode'][0]))
 
     def do_filelog(self, req):
         req.write(self.filelog(self.cleanpath(req.form['file'][0]),
                                req.form['filenode'][0]))
 
     def do_heads(self, req):
         resp = " ".join(map(hex, self.repo.heads())) + "\n"
         req.httphdr("application/mercurial-0.1", length=len(resp))
         req.write(resp)
 
     def do_branches(self, req):
         nodes = []
         if req.form.has_key('nodes'):
             nodes = map(bin, req.form['nodes'][0].split(" "))
         resp = cStringIO.StringIO()
         for b in self.repo.branches(nodes):
             resp.write(" ".join(map(hex, b)) + "\n")
         resp = resp.getvalue()
         req.httphdr("application/mercurial-0.1", length=len(resp))
         req.write(resp)
 
     def do_between(self, req):
         nodes = []
         if req.form.has_key('pairs'):
             pairs = [map(bin, p.split("-"))
                      for p in req.form['pairs'][0].split(" ")]
         resp = cStringIO.StringIO()
         for b in self.repo.between(pairs):
             resp.write(" ".join(map(hex, b)) + "\n")
         resp = resp.getvalue()
         req.httphdr("application/mercurial-0.1", length=len(resp))
         req.write(resp)
 
     def do_changegroup(self, req):
         req.httphdr("application/mercurial-0.1")
         nodes = []
         if not self.allowpull:
             return
 
         if req.form.has_key('roots'):
             nodes = map(bin, req.form['roots'][0].split(" "))
 
         z = zlib.compressobj()
         f = self.repo.changegroup(nodes, 'serve')
         while 1:
             chunk = f.read(4096)
             if not chunk:
                 break
             req.write(z.compress(chunk))
 
         req.write(z.flush())
 
     def do_archive(self, req):
         changeset = self.repo.lookup(req.form['node'][0])
         type_ = req.form['type'][0]
         allowed = self.repo.ui.configlist("web", "allow_archive")
         if (type_ in self.archives and (type_ in allowed or
             self.repo.ui.configbool("web", "allow" + type_, False))):
             self.archive(req, changeset, type_)
             return
 
         req.write(self.t("error"))
 
     def do_static(self, req):
         fname = req.form['file'][0]
         static = self.repo.ui.config("web", "static",
                                      os.path.join(self.templatepath,
                                                   "static"))
         req.write(staticfile(static, fname, req)
                   or self.t("error", error="%r not found" % fname))
 
     def do_capabilities(self, req):
-        resp = 'unbundle stream=%d' % (self.repo.revlogversion,)
+        caps = ['unbundle']
+        if self.repo.ui.configbool('server', 'uncompressed'):
+            caps.append('stream=%d' % self.repo.revlogversion)
+        resp = ' '.join(caps)
         req.httphdr("application/mercurial-0.1", length=len(resp))
         req.write(resp)
 
     def check_perm(self, req, op, default):
         '''check permission for operation based on user auth.
         return true if op allowed, else false.
         default is policy to use if no config given.'''
 
         user = req.env.get('REMOTE_USER')
 
         deny = self.repo.ui.configlist('web', 'deny_' + op)
         if deny and (not user or deny == ['*'] or user in deny):
             return False
 
         allow = self.repo.ui.configlist('web', 'allow_' + op)
         return (allow and (allow == ['*'] or user in allow)) or default
 
     def do_unbundle(self, req):
         def bail(response, headers={}):
             length = int(req.env['CONTENT_LENGTH'])
             for s in util.filechunkiter(req, limit=length):
                 # drain incoming bundle, else client will not see
                 # response when run outside cgi script
                 pass
             req.httphdr("application/mercurial-0.1", headers=headers)
             req.write('0\n')
             req.write(response)
 
         # require ssl by default, auth info cannot be sniffed and
         # replayed
         ssl_req = self.repo.ui.configbool('web', 'push_ssl', True)
         if ssl_req and not req.env.get('HTTPS'):
             bail(_('ssl required\n'))
             return
 
         # do not allow push unless explicitly allowed
         if not self.check_perm(req, 'push', False):
             bail(_('push not authorized\n'),
                  headers={'status': '401 Unauthorized'})
             return
 
         req.httphdr("application/mercurial-0.1")
 
         their_heads = req.form['heads'][0].split(' ')
 
         def check_heads():
             heads = map(hex, self.repo.heads())
             return their_heads == [hex('force')] or their_heads == heads
 
         # fail early if possible
         if not check_heads():
             bail(_('unsynced changes\n'))
             return
 
         # do not lock repo until all changegroup data is
         # streamed. save to temporary file.
 
         fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')
         fp = os.fdopen(fd, 'wb+')
         try:
             length = int(req.env['CONTENT_LENGTH'])
             for s in util.filechunkiter(req, limit=length):
                 fp.write(s)
 
             lock = self.repo.lock()
             try:
                 if not check_heads():
                     req.write('0\n')
                     req.write(_('unsynced changes\n'))
                     return
 
                 fp.seek(0)
 
                 # send addchangegroup output to client
 
                 old_stdout = sys.stdout
                 sys.stdout = cStringIO.StringIO()
 
                 try:
                     ret = self.repo.addchangegroup(fp, 'serve')
                 finally:
                     val = sys.stdout.getvalue()
                     sys.stdout = old_stdout
                 req.write('%d\n' % ret)
                 req.write(val)
             finally:
                 lock.release()
         finally:
             fp.close()
             os.unlink(tempname)
 
     def do_stream_out(self, req):
         req.httphdr("application/mercurial-0.1")
         streamclone.stream_out(self.repo, req)

mercurial/localrepo.py

@@ -1,2254 +1,2258 b''
 # localrepo.py - read/write repository class 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 node import *
 from i18n import gettext as _
 from demandload import *
 import repo
 demandload(globals(), "appendfile changegroup")
 demandload(globals(), "changelog dirstate filelog manifest context")
 demandload(globals(), "re lock transaction tempfile stat mdiff errno ui")
 demandload(globals(), "os revlog time util")
 
 class localrepository(repo.repository):
     capabilities = ()
 
     def __del__(self):
         self.transhandle = None
     def __init__(self, parentui, path=None, create=0):
         repo.repository.__init__(self)
         if not path:
             p = os.getcwd()
             while not os.path.isdir(os.path.join(p, ".hg")):
                 oldp = p
                 p = os.path.dirname(p)
                 if p == oldp:
                     raise repo.RepoError(_("no repo found"))
             path = p
         self.path = os.path.join(path, ".hg")
 
         if not create and not os.path.isdir(self.path):
             raise repo.RepoError(_("repository %s not found") % path)
 
         self.root = os.path.abspath(path)
         self.origroot = path
         self.ui = ui.ui(parentui=parentui)
         self.opener = util.opener(self.path)
         self.wopener = util.opener(self.root)
 
         try:
             self.ui.readconfig(self.join("hgrc"), self.root)
         except IOError:
             pass
 
         v = self.ui.revlogopts
         self.revlogversion = int(v.get('format', revlog.REVLOG_DEFAULT_FORMAT))
         self.revlogv1 = self.revlogversion != revlog.REVLOGV0
         fl = v.get('flags', None)
         flags = 0
         if fl != None:
             for x in fl.split():
                 flags |= revlog.flagstr(x)
         elif self.revlogv1:
             flags = revlog.REVLOG_DEFAULT_FLAGS
 
         v = self.revlogversion | flags
         self.manifest = manifest.manifest(self.opener, v)
         self.changelog = changelog.changelog(self.opener, v)
 
         # the changelog might not have the inline index flag
         # on.  If the format of the changelog is the same as found in
         # .hgrc, apply any flags found in the .hgrc as well.
         # Otherwise, just version from the changelog
         v = self.changelog.version
         if v == self.revlogversion:
             v |= flags
         self.revlogversion = v
 
         self.tagscache = None
         self.nodetagscache = None
         self.encodepats = None
         self.decodepats = None
         self.transhandle = None
 
         if create:
             if not os.path.exists(path):
                 os.mkdir(path)
             os.mkdir(self.path)
             os.mkdir(self.join("data"))
 
         self.dirstate = dirstate.dirstate(self.opener, self.ui, self.root)
 
     def hook(self, name, throw=False, **args):
         def callhook(hname, funcname):
             '''call python hook. hook is callable object, looked up as
             name in python module. if callable returns "true", hook
             fails, else passes. if hook raises exception, treated as
             hook failure. exception propagates if throw is "true".
 
             reason for "true" meaning "hook failed" is so that
             unmodified commands (e.g. mercurial.commands.update) can
             be run as hooks without wrappers to convert return values.'''
 
             self.ui.note(_("calling hook %s: %s\n") % (hname, funcname))
             d = funcname.rfind('.')
             if d == -1:
                 raise util.Abort(_('%s hook is invalid ("%s" not in a module)')
                                  % (hname, funcname))
             modname = funcname[:d]
             try:
                 obj = __import__(modname)
             except ImportError:
                 try:
                     # extensions are loaded with hgext_ prefix
                     obj = __import__("hgext_%s" % modname)
                 except ImportError:
                     raise util.Abort(_('%s hook is invalid '
                                        '(import of "%s" failed)') %
                                      (hname, modname))
             try:
                 for p in funcname.split('.')[1:]:
                     obj = getattr(obj, p)
             except AttributeError, err:
                 raise util.Abort(_('%s hook is invalid '
                                    '("%s" is not defined)') %
                                  (hname, funcname))
             if not callable(obj):
                 raise util.Abort(_('%s hook is invalid '
                                    '("%s" is not callable)') %
                                  (hname, funcname))
             try:
                 r = obj(ui=self.ui, repo=self, hooktype=name, **args)
             except (KeyboardInterrupt, util.SignalInterrupt):
                 raise
             except Exception, exc:
                 if isinstance(exc, util.Abort):
                     self.ui.warn(_('error: %s hook failed: %s\n') %
                                  (hname, exc.args[0] % exc.args[1:]))
                 else:
                     self.ui.warn(_('error: %s hook raised an exception: '
                                    '%s\n') % (hname, exc))
                 if throw:
                     raise
                 self.ui.print_exc()
                 return True
             if r:
                 if throw:
                     raise util.Abort(_('%s hook failed') % hname)
                 self.ui.warn(_('warning: %s hook failed\n') % hname)
             return r
 
         def runhook(name, cmd):
             self.ui.note(_("running hook %s: %s\n") % (name, cmd))
             env = dict([('HG_' + k.upper(), v) for k, v in args.iteritems()])
             r = util.system(cmd, environ=env, cwd=self.root)
             if r:
                 desc, r = util.explain_exit(r)
                 if throw:
                     raise util.Abort(_('%s hook %s') % (name, desc))
                 self.ui.warn(_('warning: %s hook %s\n') % (name, desc))
             return r
 
         r = False
         hooks = [(hname, cmd) for hname, cmd in self.ui.configitems("hooks")
                  if hname.split(".", 1)[0] == name and cmd]
         hooks.sort()
         for hname, cmd in hooks:
             if cmd.startswith('python:'):
                 r = callhook(hname, cmd[7:].strip()) or r
             else:
                 r = runhook(hname, cmd) or r
         return r
 
     tag_disallowed = ':\r\n'
 
     def tag(self, name, node, local=False, message=None, user=None, date=None):
         '''tag a revision with a symbolic name.
 
         if local is True, the tag is stored in a per-repository file.
         otherwise, it is stored in the .hgtags file, and a new
         changeset is committed with the change.
 
         keyword arguments:
 
         local: whether to store tag in non-version-controlled file
         (default False)
 
         message: commit message to use if committing
 
         user: name of user to use if committing
 
         date: date tuple to use if committing'''
 
         for c in self.tag_disallowed:
             if c in name:
                 raise util.Abort(_('%r cannot be used in a tag name') % c)
 
         self.hook('pretag', throw=True, node=node, tag=name, local=local)
 
         if local:
             self.opener('localtags', 'a').write('%s %s\n' % (node, name))
             self.hook('tag', node=node, tag=name, local=local)
             return
 
         for x in self.changes():
             if '.hgtags' in x:
                 raise util.Abort(_('working copy of .hgtags is changed '
                                    '(please commit .hgtags manually)'))
 
         self.wfile('.hgtags', 'ab').write('%s %s\n' % (node, name))
         if self.dirstate.state('.hgtags') == '?':
             self.add(['.hgtags'])
 
         if not message:
             message = _('Added tag %s for changeset %s') % (name, node)
 
         self.commit(['.hgtags'], message, user, date)
         self.hook('tag', node=node, tag=name, local=local)
 
     def tags(self):
         '''return a mapping of tag to node'''
         if not self.tagscache:
             self.tagscache = {}
 
             def parsetag(line, context):
                 if not line:
                     return
                 s = l.split(" ", 1)
                 if len(s) != 2:
                     self.ui.warn(_("%s: cannot parse entry\n") % context)
                     return
                 node, key = s
                 key = key.strip()
                 try:
                     bin_n = bin(node)
                 except TypeError:
                     self.ui.warn(_("%s: node '%s' is not well formed\n") %
                                  (context, node))
                     return
                 if bin_n not in self.changelog.nodemap:
                     self.ui.warn(_("%s: tag '%s' refers to unknown node\n") %
                                  (context, key))
                     return
                 self.tagscache[key] = bin_n
 
             # read the tags file from each head, ending with the tip,
             # and add each tag found to the map, with "newer" ones
             # taking precedence
             heads = self.heads()
             heads.reverse()
             fl = self.file(".hgtags")
             for node in heads:
                 change = self.changelog.read(node)
                 rev = self.changelog.rev(node)
                 fn, ff = self.manifest.find(change[0], '.hgtags')
                 if fn is None: continue
                 count = 0
                 for l in fl.read(fn).splitlines():
                     count += 1
                     parsetag(l, _(".hgtags (rev %d:%s), line %d") %
                              (rev, short(node), count))
             try:
                 f = self.opener("localtags")
                 count = 0
                 for l in f:
                     count += 1
                     parsetag(l, _("localtags, line %d") % count)
             except IOError:
                 pass
 
             self.tagscache['tip'] = self.changelog.tip()
 
         return self.tagscache
 
     def tagslist(self):
         '''return a list of tags ordered by revision'''
         l = []
         for t, n in self.tags().items():
             try:
                 r = self.changelog.rev(n)
             except:
                 r = -2 # sort to the beginning of the list if unknown
             l.append((r, t, n))
         l.sort()
         return [(t, n) for r, t, n in l]
 
     def nodetags(self, node):
         '''return the tags associated with a node'''
         if not self.nodetagscache:
             self.nodetagscache = {}
             for t, n in self.tags().items():
                 self.nodetagscache.setdefault(n, []).append(t)
         return self.nodetagscache.get(node, [])
 
     def lookup(self, key):
         try:
             return self.tags()[key]
         except KeyError:
             try:
                 return self.changelog.lookup(key)
             except:
                 raise repo.RepoError(_("unknown revision '%s'") % key)
 
     def dev(self):
         return os.lstat(self.path).st_dev
 
     def local(self):
         return True
 
     def join(self, f):
         return os.path.join(self.path, f)
 
     def wjoin(self, f):
         return os.path.join(self.root, f)
 
     def file(self, f):
         if f[0] == '/':
             f = f[1:]
         return filelog.filelog(self.opener, f, self.revlogversion)
 
     def changectx(self, changeid):
         return context.changectx(self, changeid)
 
     def filectx(self, path, changeid=None, fileid=None):
         """changeid can be a changeset revision, node, or tag.
            fileid can be a file revision or node."""
         return context.filectx(self, path, changeid, fileid)
 
     def getcwd(self):
         return self.dirstate.getcwd()
 
     def wfile(self, f, mode='r'):
         return self.wopener(f, mode)
 
     def wread(self, filename):
         if self.encodepats == None:
             l = []
             for pat, cmd in self.ui.configitems("encode"):
                 mf = util.matcher(self.root, "", [pat], [], [])[1]
                 l.append((mf, cmd))
             self.encodepats = l
 
         data = self.wopener(filename, 'r').read()
 
         for mf, cmd in self.encodepats:
             if mf(filename):
                 self.ui.debug(_("filtering %s through %s\n") % (filename, cmd))
                 data = util.filter(data, cmd)
                 break
 
         return data
 
     def wwrite(self, filename, data, fd=None):
         if self.decodepats == None:
             l = []
             for pat, cmd in self.ui.configitems("decode"):
                 mf = util.matcher(self.root, "", [pat], [], [])[1]
                 l.append((mf, cmd))
             self.decodepats = l
 
         for mf, cmd in self.decodepats:
             if mf(filename):
                 self.ui.debug(_("filtering %s through %s\n") % (filename, cmd))
                 data = util.filter(data, cmd)
                 break
 
         if fd:
             return fd.write(data)
         return self.wopener(filename, 'w').write(data)
 
     def transaction(self):
         tr = self.transhandle
         if tr != None and tr.running():
             return tr.nest()
 
         # save dirstate for rollback
         try:
             ds = self.opener("dirstate").read()
         except IOError:
             ds = ""
         self.opener("journal.dirstate", "w").write(ds)
 
         tr = transaction.transaction(self.ui.warn, self.opener,
                                        self.join("journal"),
                                        aftertrans(self.path))
         self.transhandle = tr
         return tr
 
     def recover(self):
         l = self.lock()
         if os.path.exists(self.join("journal")):
             self.ui.status(_("rolling back interrupted transaction\n"))
             transaction.rollback(self.opener, self.join("journal"))
             self.reload()
             return True
         else:
             self.ui.warn(_("no interrupted transaction available\n"))
             return False
 
     def rollback(self, wlock=None):
         if not wlock:
             wlock = self.wlock()
         l = self.lock()
         if os.path.exists(self.join("undo")):
             self.ui.status(_("rolling back last transaction\n"))
             transaction.rollback(self.opener, self.join("undo"))
             util.rename(self.join("undo.dirstate"), self.join("dirstate"))
             self.reload()
             self.wreload()
         else:
             self.ui.warn(_("no rollback information available\n"))
 
     def wreload(self):
         self.dirstate.read()
 
     def reload(self):
         self.changelog.load()
         self.manifest.load()
         self.tagscache = None
         self.nodetagscache = None
 
     def do_lock(self, lockname, wait, releasefn=None, acquirefn=None,
                 desc=None):
         try:
             l = lock.lock(self.join(lockname), 0, releasefn, desc=desc)
         except lock.LockHeld, inst:
             if not wait:
                 raise
             self.ui.warn(_("waiting for lock on %s held by %s\n") %
                          (desc, inst.args[0]))
             # default to 600 seconds timeout
             l = lock.lock(self.join(lockname),
                           int(self.ui.config("ui", "timeout") or 600),
                           releasefn, desc=desc)
         if acquirefn:
             acquirefn()
         return l
 
     def lock(self, wait=1):
         return self.do_lock("lock", wait, acquirefn=self.reload,
                             desc=_('repository %s') % self.origroot)
 
     def wlock(self, wait=1):
         return self.do_lock("wlock", wait, self.dirstate.write,
                             self.wreload,
                             desc=_('working directory of %s') % self.origroot)
 
     def checkfilemerge(self, filename, text, filelog, manifest1, manifest2):
         "determine whether a new filenode is needed"
         fp1 = manifest1.get(filename, nullid)
         fp2 = manifest2.get(filename, nullid)
 
         if fp2 != nullid:
             # is one parent an ancestor of the other?
             fpa = filelog.ancestor(fp1, fp2)
             if fpa == fp1:
                 fp1, fp2 = fp2, nullid
             elif fpa == fp2:
                 fp2 = nullid
 
             # is the file unmodified from the parent? report existing entry
             if fp2 == nullid and text == filelog.read(fp1):
                 return (fp1, None, None)
 
         return (None, fp1, fp2)
 
     def rawcommit(self, files, text, user, date, p1=None, p2=None, wlock=None):
         orig_parent = self.dirstate.parents()[0] or nullid
         p1 = p1 or self.dirstate.parents()[0] or nullid
         p2 = p2 or self.dirstate.parents()[1] or nullid
         c1 = self.changelog.read(p1)
         c2 = self.changelog.read(p2)
         m1 = self.manifest.read(c1[0])
         mf1 = self.manifest.readflags(c1[0])
         m2 = self.manifest.read(c2[0])
         changed = []
 
         if orig_parent == p1:
             update_dirstate = 1
         else:
             update_dirstate = 0
 
         if not wlock:
             wlock = self.wlock()
         l = self.lock()
         tr = self.transaction()
         mm = m1.copy()
         mfm = mf1.copy()
         linkrev = self.changelog.count()
         for f in files:
             try:
                 t = self.wread(f)
                 tm = util.is_exec(self.wjoin(f), mfm.get(f, False))
                 r = self.file(f)
                 mfm[f] = tm
 
                 (entry, fp1, fp2) = self.checkfilemerge(f, t, r, m1, m2)
                 if entry:
                     mm[f] = entry
                     continue
 
                 mm[f] = r.add(t, {}, tr, linkrev, fp1, fp2)
                 changed.append(f)
                 if update_dirstate:
                     self.dirstate.update([f], "n")
             except IOError:
                 try:
                     del mm[f]
                     del mfm[f]
                     if update_dirstate:
                         self.dirstate.forget([f])
                 except:
                     # deleted from p2?
                     pass
 
         mnode = self.manifest.add(mm, mfm, tr, linkrev, c1[0], c2[0])
         user = user or self.ui.username()
         n = self.changelog.add(mnode, changed, text, tr, p1, p2, user, date)
         tr.close()
         if update_dirstate:
             self.dirstate.setparents(n, nullid)
 
     def commit(self, files=None, text="", user=None, date=None,
                match=util.always, force=False, lock=None, wlock=None,
                force_editor=False):
         commit = []
         remove = []
         changed = []
 
         if files:
             for f in files:
                 s = self.dirstate.state(f)
                 if s in 'nmai':
                     commit.append(f)
                 elif s == 'r':
                     remove.append(f)
                 else:
                     self.ui.warn(_("%s not tracked!\n") % f)
         else:
             modified, added, removed, deleted, unknown = self.changes(match=match)
             commit = modified + added
             remove = removed
 
         p1, p2 = self.dirstate.parents()
         c1 = self.changelog.read(p1)
         c2 = self.changelog.read(p2)
         m1 = self.manifest.read(c1[0])
         mf1 = self.manifest.readflags(c1[0])
         m2 = self.manifest.read(c2[0])
 
         if not commit and not remove and not force and p2 == nullid:
             self.ui.status(_("nothing changed\n"))
             return None
 
         xp1 = hex(p1)
         if p2 == nullid: xp2 = ''
         else: xp2 = hex(p2)
 
         self.hook("precommit", throw=True, parent1=xp1, parent2=xp2)
 
         if not wlock:
             wlock = self.wlock()
         if not lock:
             lock = self.lock()
         tr = self.transaction()
 
         # check in files
         new = {}
         linkrev = self.changelog.count()
         commit.sort()
         for f in commit:
             self.ui.note(f + "\n")
             try:
                 mf1[f] = util.is_exec(self.wjoin(f), mf1.get(f, False))
                 t = self.wread(f)
             except IOError:
                 self.ui.warn(_("trouble committing %s!\n") % f)
                 raise
 
             r = self.file(f)
 
             meta = {}
             cp = self.dirstate.copied(f)
             if cp:
                 meta["copy"] = cp
                 meta["copyrev"] = hex(m1.get(cp, m2.get(cp, nullid)))
                 self.ui.debug(_(" %s: copy %s:%s\n") % (f, cp, meta["copyrev"]))
                 fp1, fp2 = nullid, nullid
             else:
                 entry, fp1, fp2 = self.checkfilemerge(f, t, r, m1, m2)
                 if entry:
                     new[f] = entry
                     continue
 
             new[f] = r.add(t, meta, tr, linkrev, fp1, fp2)
             # remember what we've added so that we can later calculate
             # the files to pull from a set of changesets
             changed.append(f)
 
         # update manifest
         m1 = m1.copy()
         m1.update(new)
         for f in remove:
             if f in m1:
                 del m1[f]
         mn = self.manifest.add(m1, mf1, tr, linkrev, c1[0], c2[0],
                                (new, remove))
 
         # add changeset
         new = new.keys()
         new.sort()
 
         user = user or self.ui.username()
         if not text or force_editor:
             edittext = []
             if text:
                 edittext.append(text)
             edittext.append("")
             if p2 != nullid:
                 edittext.append("HG: branch merge")
             edittext.extend(["HG: changed %s" % f for f in changed])
             edittext.extend(["HG: removed %s" % f for f in remove])
             if not changed and not remove:
                 edittext.append("HG: no files changed")
             edittext.append("")
             # run editor in the repository root
             olddir = os.getcwd()
             os.chdir(self.root)
             text = self.ui.edit("\n".join(edittext), user)
             os.chdir(olddir)
 
         lines = [line.rstrip() for line in text.rstrip().splitlines()]
         while lines and not lines[0]:
             del lines[0]
         if not lines:
             return None
         text = '\n'.join(lines)
         n = self.changelog.add(mn, changed + remove, text, tr, p1, p2, user, date)
         self.hook('pretxncommit', throw=True, node=hex(n), parent1=xp1,
                   parent2=xp2)
         tr.close()
 
         self.dirstate.setparents(n)
         self.dirstate.update(new, "n")
         self.dirstate.forget(remove)
 
         self.hook("commit", node=hex(n), parent1=xp1, parent2=xp2)
         return n
 
     def walk(self, node=None, files=[], match=util.always, badmatch=None):
         if node:
             fdict = dict.fromkeys(files)
             for fn in self.manifest.read(self.changelog.read(node)[0]):
                 fdict.pop(fn, None)
                 if match(fn):
                     yield 'm', fn
             for fn in fdict:
                 if badmatch and badmatch(fn):
                     if match(fn):
                         yield 'b', fn
                 else:
                     self.ui.warn(_('%s: No such file in rev %s\n') % (
                         util.pathto(self.getcwd(), fn), short(node)))
         else:
             for src, fn in self.dirstate.walk(files, match, badmatch=badmatch):
                 yield src, fn
 
     def changes(self, node1=None, node2=None, files=[], match=util.always,
                 wlock=None, show_ignored=None):
         """return changes between two nodes or node and working directory
 
         If node1 is None, use the first dirstate parent instead.
         If node2 is None, compare node1 with working directory.
         """
 
         def fcmp(fn, mf):
             t1 = self.wread(fn)
             t2 = self.file(fn).read(mf.get(fn, nullid))
             return cmp(t1, t2)
 
         def mfmatches(node):
             change = self.changelog.read(node)
             mf = dict(self.manifest.read(change[0]))
             for fn in mf.keys():
                 if not match(fn):
                     del mf[fn]
             return mf
 
         modified, added, removed, deleted, unknown, ignored = [],[],[],[],[],[]
         compareworking = False
         if not node1 or (not node2 and node1 == self.dirstate.parents()[0]):
             compareworking = True
 
         if not compareworking:
             # read the manifest from node1 before the manifest from node2,
             # so that we'll hit the manifest cache if we're going through
             # all the revisions in parent->child order.
             mf1 = mfmatches(node1)
 
         # are we comparing the working directory?
         if not node2:
             if not wlock:
                 try:
                     wlock = self.wlock(wait=0)
                 except lock.LockException:
                     wlock = None
             lookup, modified, added, removed, deleted, unknown, ignored = (
                 self.dirstate.changes(files, match, show_ignored))
 
             # are we comparing working dir against its parent?
             if compareworking:
                 if lookup:
                     # do a full compare of any files that might have changed
                     mf2 = mfmatches(self.dirstate.parents()[0])
                     for f in lookup:
                         if fcmp(f, mf2):
                             modified.append(f)
                         elif wlock is not None:
                             self.dirstate.update([f], "n")
             else:
                 # we are comparing working dir against non-parent
                 # generate a pseudo-manifest for the working dir
                 mf2 = mfmatches(self.dirstate.parents()[0])
                 for f in lookup + modified + added:
                     mf2[f] = ""
                 for f in removed:
                     if f in mf2:
                         del mf2[f]
         else:
             # we are comparing two revisions
             deleted, unknown, ignored = [], [], []
             mf2 = mfmatches(node2)
 
         if not compareworking:
             # flush lists from dirstate before comparing manifests
             modified, added = [], []
 
             # make sure to sort the files so we talk to the disk in a
             # reasonable order
             mf2keys = mf2.keys()
             mf2keys.sort()
             for fn in mf2keys:
                 if mf1.has_key(fn):
                     if mf1[fn] != mf2[fn] and (mf2[fn] != "" or fcmp(fn, mf1)):
                         modified.append(fn)
                     del mf1[fn]
                 else:
                     added.append(fn)
 
             removed = mf1.keys()
 
         # sort and return results:
         for l in modified, added, removed, deleted, unknown, ignored:
             l.sort()
         if show_ignored is None:
             return (modified, added, removed, deleted, unknown)
         else:
             return (modified, added, removed, deleted, unknown, ignored)
 
     def add(self, list, wlock=None):
         if not wlock:
             wlock = self.wlock()
         for f in list:
             p = self.wjoin(f)
             if not os.path.exists(p):
                 self.ui.warn(_("%s does not exist!\n") % f)
             elif not os.path.isfile(p):
                 self.ui.warn(_("%s not added: only files supported currently\n")
                              % f)
             elif self.dirstate.state(f) in 'an':
                 self.ui.warn(_("%s already tracked!\n") % f)
             else:
                 self.dirstate.update([f], "a")
 
     def forget(self, list, wlock=None):
         if not wlock:
             wlock = self.wlock()
         for f in list:
             if self.dirstate.state(f) not in 'ai':
                 self.ui.warn(_("%s not added!\n") % f)
             else:
                 self.dirstate.forget([f])
 
     def remove(self, list, unlink=False, wlock=None):
         if unlink:
             for f in list:
                 try:
                     util.unlink(self.wjoin(f))
                 except OSError, inst:
                     if inst.errno != errno.ENOENT:
                         raise
         if not wlock:
             wlock = self.wlock()
         for f in list:
             p = self.wjoin(f)
             if os.path.exists(p):
                 self.ui.warn(_("%s still exists!\n") % f)
             elif self.dirstate.state(f) == 'a':
                 self.dirstate.forget([f])
             elif f not in self.dirstate:
                 self.ui.warn(_("%s not tracked!\n") % f)
             else:
                 self.dirstate.update([f], "r")
 
     def undelete(self, list, wlock=None):
         p = self.dirstate.parents()[0]
         mn = self.changelog.read(p)[0]
         mf = self.manifest.readflags(mn)
         m = self.manifest.read(mn)
         if not wlock:
             wlock = self.wlock()
         for f in list:
             if self.dirstate.state(f) not in  "r":
                 self.ui.warn("%s not removed!\n" % f)
             else:
                 t = self.file(f).read(m[f])
                 self.wwrite(f, t)
                 util.set_exec(self.wjoin(f), mf[f])
                 self.dirstate.update([f], "n")
 
     def copy(self, source, dest, wlock=None):
         p = self.wjoin(dest)
         if not os.path.exists(p):
             self.ui.warn(_("%s does not exist!\n") % dest)
         elif not os.path.isfile(p):
             self.ui.warn(_("copy failed: %s is not a file\n") % dest)
         else:
             if not wlock:
                 wlock = self.wlock()
             if self.dirstate.state(dest) == '?':
                 self.dirstate.update([dest], "a")
             self.dirstate.copy(source, dest)
 
     def heads(self, start=None):
         heads = self.changelog.heads(start)
         # sort the output in rev descending order
         heads = [(-self.changelog.rev(h), h) for h in heads]
         heads.sort()
         return [n for (r, n) in heads]
 
     # branchlookup returns a dict giving a list of branches for
     # each head.  A branch is defined as the tag of a node or
     # the branch of the node's parents.  If a node has multiple
     # branch tags, tags are eliminated if they are visible from other
     # branch tags.
     #
     # So, for this graph:  a->b->c->d->e
     #                       \         /
     #                        aa -----/
     # a has tag 2.6.12
     # d has tag 2.6.13
     # e would have branch tags for 2.6.12 and 2.6.13.  Because the node
     # for 2.6.12 can be reached from the node 2.6.13, that is eliminated
     # from the list.
     #
     # It is possible that more than one head will have the same branch tag.
     # callers need to check the result for multiple heads under the same
     # branch tag if that is a problem for them (ie checkout of a specific
     # branch).
     #
     # passing in a specific branch will limit the depth of the search
     # through the parents.  It won't limit the branches returned in the
     # result though.
     def branchlookup(self, heads=None, branch=None):
         if not heads:
             heads = self.heads()
         headt = [ h for h in heads ]
         chlog = self.changelog
         branches = {}
         merges = []
         seenmerge = {}
 
         # traverse the tree once for each head, recording in the branches
         # dict which tags are visible from this head.  The branches
         # dict also records which tags are visible from each tag
         # while we traverse.
         while headt or merges:
             if merges:
                 n, found = merges.pop()
                 visit = [n]
             else:
                 h = headt.pop()
                 visit = [h]
                 found = [h]
                 seen = {}
             while visit:
                 n = visit.pop()
                 if n in seen:
                     continue
                 pp = chlog.parents(n)
                 tags = self.nodetags(n)
                 if tags:
                     for x in tags:
                         if x == 'tip':
                             continue
                         for f in found:
                             branches.setdefault(f, {})[n] = 1
                         branches.setdefault(n, {})[n] = 1
                         break
                     if n not in found:
                         found.append(n)
                     if branch in tags:
                         continue
                 seen[n] = 1
                 if pp[1] != nullid and n not in seenmerge:
                     merges.append((pp[1], [x for x in found]))
                     seenmerge[n] = 1
                 if pp[0] != nullid:
                     visit.append(pp[0])
         # traverse the branches dict, eliminating branch tags from each
         # head that are visible from another branch tag for that head.
         out = {}
         viscache = {}
         for h in heads:
             def visible(node):
                 if node in viscache:
                     return viscache[node]
                 ret = {}
                 visit = [node]
                 while visit:
                     x = visit.pop()
                     if x in viscache:
                         ret.update(viscache[x])
                     elif x not in ret:
                         ret[x] = 1
                         if x in branches:
                             visit[len(visit):] = branches[x].keys()
                 viscache[node] = ret
                 return ret
             if h not in branches:
                 continue
             # O(n^2), but somewhat limited.  This only searches the
             # tags visible from a specific head, not all the tags in the
             # whole repo.
             for b in branches[h]:
                 vis = False
                 for bb in branches[h].keys():
                     if b != bb:
                         if b in visible(bb):
                             vis = True
                             break
                 if not vis:
                     l = out.setdefault(h, [])
                     l[len(l):] = self.nodetags(b)
         return out
 
     def branches(self, nodes):
         if not nodes:
             nodes = [self.changelog.tip()]
         b = []
         for n in nodes:
             t = n
             while 1:
                 p = self.changelog.parents(n)
                 if p[1] != nullid or p[0] == nullid:
                     b.append((t, n, p[0], p[1]))
                     break
                 n = p[0]
         return b
 
     def between(self, pairs):
         r = []
 
         for top, bottom in pairs:
             n, l, i = top, [], 0
             f = 1
 
             while n != bottom:
                 p = self.changelog.parents(n)[0]
                 if i == f:
                     l.append(n)
                     f = f * 2
                 n = p
                 i += 1
 
             r.append(l)
 
         return r
 
     def findincoming(self, remote, base=None, heads=None, force=False):
         """Return list of roots of the subsets of missing nodes from remote
 
         If base dict is specified, assume that these nodes and their parents
         exist on the remote side and that no child of a node of base exists
         in both remote and self.
         Furthermore base will be updated to include the nodes that exists
         in self and remote but no children exists in self and remote.
         If a list of heads is specified, return only nodes which are heads
         or ancestors of these heads.
 
         All the ancestors of base are in self and in remote.
         All the descendants of the list returned are missing in self.
         (and so we know that the rest of the nodes are missing in remote, see
         outgoing)
         """
         m = self.changelog.nodemap
         search = []
         fetch = {}
         seen = {}
         seenbranch = {}
         if base == None:
             base = {}
 
         if not heads:
             heads = remote.heads()
 
         if self.changelog.tip() == nullid:
             base[nullid] = 1
             if heads != [nullid]:
                 return [nullid]
             return []
 
         # assume we're closer to the tip than the root
         # and start by examining the heads
         self.ui.status(_("searching for changes\n"))
 
         unknown = []
         for h in heads:
             if h not in m:
                 unknown.append(h)
             else:
                 base[h] = 1
 
         if not unknown:
             return []
 
         req = dict.fromkeys(unknown)
         reqcnt = 0
 
         # search through remote branches
         # a 'branch' here is a linear segment of history, with four parts:
         # head, root, first parent, second parent
         # (a branch always has two parents (or none) by definition)
         unknown = remote.branches(unknown)
         while unknown:
             r = []
             while unknown:
                 n = unknown.pop(0)
                 if n[0] in seen:
                     continue
 
                 self.ui.debug(_("examining %s:%s\n")
                               % (short(n[0]), short(n[1])))
                 if n[0] == nullid: # found the end of the branch
                     pass
                 elif n in seenbranch:
                     self.ui.debug(_("branch already found\n"))
                     continue
                 elif n[1] and n[1] in m: # do we know the base?
                     self.ui.debug(_("found incomplete branch %s:%s\n")
                                   % (short(n[0]), short(n[1])))
                     search.append(n) # schedule branch range for scanning
                     seenbranch[n] = 1
                 else:
                     if n[1] not in seen and n[1] not in fetch:
                         if n[2] in m and n[3] in m:
                             self.ui.debug(_("found new changeset %s\n") %
                                           short(n[1]))
                             fetch[n[1]] = 1 # earliest unknown
                         for p in n[2:4]:
                             if p in m:
                                 base[p] = 1 # latest known
 
                     for p in n[2:4]:
                         if p not in req and p not in m:
                             r.append(p)
                             req[p] = 1
                 seen[n[0]] = 1
 
             if r:
                 reqcnt += 1
                 self.ui.debug(_("request %d: %s\n") %
                             (reqcnt, " ".join(map(short, r))))
                 for p in range(0, len(r), 10):
                     for b in remote.branches(r[p:p+10]):
                         self.ui.debug(_("received %s:%s\n") %
                                       (short(b[0]), short(b[1])))
                         unknown.append(b)
 
         # do binary search on the branches we found
         while search:
             n = search.pop(0)
             reqcnt += 1
             l = remote.between([(n[0], n[1])])[0]
             l.append(n[1])
             p = n[0]
             f = 1
             for i in l:
                 self.ui.debug(_("narrowing %d:%d %s\n") % (f, len(l), short(i)))
                 if i in m:
                     if f <= 2:
                         self.ui.debug(_("found new branch changeset %s\n") %
                                           short(p))
                         fetch[p] = 1
                         base[i] = 1
                     else:
                         self.ui.debug(_("narrowed branch search to %s:%s\n")
                                       % (short(p), short(i)))
                         search.append((p, i))
                     break
                 p, f = i, f * 2
 
         # sanity check our fetch list
         for f in fetch.keys():
             if f in m:
                 raise repo.RepoError(_("already have changeset ") + short(f[:4]))
 
         if base.keys() == [nullid]:
             if force:
                 self.ui.warn(_("warning: repository is unrelated\n"))
             else:
                 raise util.Abort(_("repository is unrelated"))
 
         self.ui.note(_("found new changesets starting at ") +
                      " ".join([short(f) for f in fetch]) + "\n")
 
         self.ui.debug(_("%d total queries\n") % reqcnt)
 
         return fetch.keys()
 
     def findoutgoing(self, remote, base=None, heads=None, force=False):
         """Return list of nodes that are roots of subsets not in remote
 
         If base dict is specified, assume that these nodes and their parents
         exist on the remote side.
         If a list of heads is specified, return only nodes which are heads
         or ancestors of these heads, and return a second element which
         contains all remote heads which get new children.
         """
         if base == None:
             base = {}
             self.findincoming(remote, base, heads, force=force)
 
         self.ui.debug(_("common changesets up to ")
                       + " ".join(map(short, base.keys())) + "\n")
 
         remain = dict.fromkeys(self.changelog.nodemap)
 
         # prune everything remote has from the tree
         del remain[nullid]
         remove = base.keys()
         while remove:
             n = remove.pop(0)
             if n in remain:
                 del remain[n]
                 for p in self.changelog.parents(n):
                     remove.append(p)
 
         # find every node whose parents have been pruned
         subset = []
         # find every remote head that will get new children
         updated_heads = {}
         for n in remain:
             p1, p2 = self.changelog.parents(n)
             if p1 not in remain and p2 not in remain:
                 subset.append(n)
             if heads:
                 if p1 in heads:
                     updated_heads[p1] = True
                 if p2 in heads:
                     updated_heads[p2] = True
 
         # this is the set of all roots we have to push
         if heads:
             return subset, updated_heads.keys()
         else:
             return subset
 
     def pull(self, remote, heads=None, force=False):
         l = self.lock()
 
         fetch = self.findincoming(remote, force=force)
         if fetch == [nullid]:
             self.ui.status(_("requesting all changes\n"))
 
         if not fetch:
             self.ui.status(_("no changes found\n"))
             return 0
 
         if heads is None:
             cg = remote.changegroup(fetch, 'pull')
         else:
             cg = remote.changegroupsubset(fetch, heads, 'pull')
         return self.addchangegroup(cg, 'pull')
 
     def push(self, remote, force=False, revs=None):
         # there are two ways to push to remote repo:
         #
         # addchangegroup assumes local user can lock remote
         # repo (local filesystem, old ssh servers).
         #
         # unbundle assumes local user cannot lock remote repo (new ssh
         # servers, http servers).
 
         if remote.capable('unbundle'):
             return self.push_unbundle(remote, force, revs)
         return self.push_addchangegroup(remote, force, revs)
 
     def prepush(self, remote, force, revs):
         base = {}
         remote_heads = remote.heads()
         inc = self.findincoming(remote, base, remote_heads, force=force)
         if not force and inc:
             self.ui.warn(_("abort: unsynced remote changes!\n"))
             self.ui.status(_("(did you forget to sync?"
                              " use push -f to force)\n"))
             return None, 1
 
         update, updated_heads = self.findoutgoing(remote, base, remote_heads)
         if revs is not None:
             msng_cl, bases, heads = self.changelog.nodesbetween(update, revs)
         else:
             bases, heads = update, self.changelog.heads()
 
         if not bases:
             self.ui.status(_("no changes found\n"))
             return None, 1
         elif not force:
             # FIXME we don't properly detect creation of new heads
             # in the push -r case, assume the user knows what he's doing
             if not revs and len(remote_heads) < len(heads) \
                    and remote_heads != [nullid]:
                 self.ui.warn(_("abort: push creates new remote branches!\n"))
                 self.ui.status(_("(did you forget to merge?"
                                  " use push -f to force)\n"))
                 return None, 1
 
         if revs is None:
             cg = self.changegroup(update, 'push')
         else:
             cg = self.changegroupsubset(update, revs, 'push')
         return cg, remote_heads
 
     def push_addchangegroup(self, remote, force, revs):
         lock = remote.lock()
 
         ret = self.prepush(remote, force, revs)
         if ret[0] is not None:
             cg, remote_heads = ret
             return remote.addchangegroup(cg, 'push')
         return ret[1]
 
     def push_unbundle(self, remote, force, revs):
         # local repo finds heads on server, finds out what revs it
         # must push.  once revs transferred, if server finds it has
         # different heads (someone else won commit/push race), server
         # aborts.
 
         ret = self.prepush(remote, force, revs)
         if ret[0] is not None:
             cg, remote_heads = ret
             if force: remote_heads = ['force']
             return remote.unbundle(cg, remote_heads, 'push')
         return ret[1]
 
     def changegroupsubset(self, bases, heads, source):
         """This function generates a changegroup consisting of all the nodes
         that are descendents of any of the bases, and ancestors of any of
         the heads.
 
         It is fairly complex as determining which filenodes and which
         manifest nodes need to be included for the changeset to be complete
         is non-trivial.
 
         Another wrinkle is doing the reverse, figuring out which changeset in
         the changegroup a particular filenode or manifestnode belongs to."""
 
         self.hook('preoutgoing', throw=True, source=source)
 
         # Set up some initial variables
         # Make it easy to refer to self.changelog
         cl = self.changelog
         # msng is short for missing - compute the list of changesets in this
         # changegroup.
         msng_cl_lst, bases, heads = cl.nodesbetween(bases, heads)
         # Some bases may turn out to be superfluous, and some heads may be
         # too.  nodesbetween will return the minimal set of bases and heads
         # necessary to re-create the changegroup.
 
         # Known heads are the list of heads that it is assumed the recipient
         # of this changegroup will know about.
         knownheads = {}
         # We assume that all parents of bases are known heads.
         for n in bases:
             for p in cl.parents(n):
                 if p != nullid:
                     knownheads[p] = 1
         knownheads = knownheads.keys()
         if knownheads:
             # Now that we know what heads are known, we can compute which
             # changesets are known.  The recipient must know about all
             # changesets required to reach the known heads from the null
             # changeset.
             has_cl_set, junk, junk = cl.nodesbetween(None, knownheads)
             junk = None
             # Transform the list into an ersatz set.
             has_cl_set = dict.fromkeys(has_cl_set)
         else:
             # If there were no known heads, the recipient cannot be assumed to
             # know about any changesets.
             has_cl_set = {}
 
         # Make it easy to refer to self.manifest
         mnfst = self.manifest
         # We don't know which manifests are missing yet
         msng_mnfst_set = {}
         # Nor do we know which filenodes are missing.
         msng_filenode_set = {}
 
         junk = mnfst.index[mnfst.count() - 1] # Get around a bug in lazyindex
         junk = None
 
         # A changeset always belongs to itself, so the changenode lookup
         # function for a changenode is identity.
         def identity(x):
             return x
 
         # A function generating function.  Sets up an environment for the
         # inner function.
         def cmp_by_rev_func(revlog):
             # Compare two nodes by their revision number in the environment's
             # revision history.  Since the revision number both represents the
             # most efficient order to read the nodes in, and represents a
             # topological sorting of the nodes, this function is often useful.
             def cmp_by_rev(a, b):
                 return cmp(revlog.rev(a), revlog.rev(b))
             return cmp_by_rev
 
         # If we determine that a particular file or manifest node must be a
         # node that the recipient of the changegroup will already have, we can
         # also assume the recipient will have all the parents.  This function
         # prunes them from the set of missing nodes.
         def prune_parents(revlog, hasset, msngset):
             haslst = hasset.keys()
             haslst.sort(cmp_by_rev_func(revlog))
             for node in haslst:
                 parentlst = [p for p in revlog.parents(node) if p != nullid]
                 while parentlst:
                     n = parentlst.pop()
                     if n not in hasset:
                         hasset[n] = 1
                         p = [p for p in revlog.parents(n) if p != nullid]
                         parentlst.extend(p)
             for n in hasset:
                 msngset.pop(n, None)
 
         # This is a function generating function used to set up an environment
         # for the inner function to execute in.
         def manifest_and_file_collector(changedfileset):
             # This is an information gathering function that gathers
             # information from each changeset node that goes out as part of
             # the changegroup.  The information gathered is a list of which
             # manifest nodes are potentially required (the recipient may
             # already have them) and total list of all files which were
             # changed in any changeset in the changegroup.
             #
             # We also remember the first changenode we saw any manifest
             # referenced by so we can later determine which changenode 'owns'
             # the manifest.
             def collect_manifests_and_files(clnode):
                 c = cl.read(clnode)
                 for f in c[3]:
                     # This is to make sure we only have one instance of each
                     # filename string for each filename.
                     changedfileset.setdefault(f, f)
                 msng_mnfst_set.setdefault(c[0], clnode)
             return collect_manifests_and_files
 
         # Figure out which manifest nodes (of the ones we think might be part
         # of the changegroup) the recipient must know about and remove them
         # from the changegroup.
         def prune_manifests():
             has_mnfst_set = {}
             for n in msng_mnfst_set:
                 # If a 'missing' manifest thinks it belongs to a changenode
                 # the recipient is assumed to have, obviously the recipient
                 # must have that manifest.
                 linknode = cl.node(mnfst.linkrev(n))
                 if linknode in has_cl_set:
                     has_mnfst_set[n] = 1
             prune_parents(mnfst, has_mnfst_set, msng_mnfst_set)
 
         # Use the information collected in collect_manifests_and_files to say
         # which changenode any manifestnode belongs to.
         def lookup_manifest_link(mnfstnode):
             return msng_mnfst_set[mnfstnode]
 
         # A function generating function that sets up the initial environment
         # the inner function.
         def filenode_collector(changedfiles):
             next_rev = [0]
             # This gathers information from each manifestnode included in the
             # changegroup about which filenodes the manifest node references
             # so we can include those in the changegroup too.
             #
             # It also remembers which changenode each filenode belongs to.  It
             # does this by assuming the a filenode belongs to the changenode
             # the first manifest that references it belongs to.
             def collect_msng_filenodes(mnfstnode):
                 r = mnfst.rev(mnfstnode)
                 if r == next_rev[0]:
                     # If the last rev we looked at was the one just previous,
                     # we only need to see a diff.
                     delta = mdiff.patchtext(mnfst.delta(mnfstnode))
                     # For each line in the delta
                     for dline in delta.splitlines():
                         # get the filename and filenode for that line
                         f, fnode = dline.split('\0')
                         fnode = bin(fnode[:40])
                         f = changedfiles.get(f, None)
                         # And if the file is in the list of files we care
                         # about.
                         if f is not None:
                             # Get the changenode this manifest belongs to
                             clnode = msng_mnfst_set[mnfstnode]
                             # Create the set of filenodes for the file if
                             # there isn't one already.
                             ndset = msng_filenode_set.setdefault(f, {})
                             # And set the filenode's changelog node to the
                             # manifest's if it hasn't been set already.
                             ndset.setdefault(fnode, clnode)
                 else:
                     # Otherwise we need a full manifest.
                     m = mnfst.read(mnfstnode)
                     # For every file in we care about.
                     for f in changedfiles:
                         fnode = m.get(f, None)
                         # If it's in the manifest
                         if fnode is not None:
                             # See comments above.
                             clnode = msng_mnfst_set[mnfstnode]
                             ndset = msng_filenode_set.setdefault(f, {})
                             ndset.setdefault(fnode, clnode)
                 # Remember the revision we hope to see next.
                 next_rev[0] = r + 1
             return collect_msng_filenodes
 
         # We have a list of filenodes we think we need for a file, lets remove
         # all those we now the recipient must have.
         def prune_filenodes(f, filerevlog):
             msngset = msng_filenode_set[f]
             hasset = {}
             # If a 'missing' filenode thinks it belongs to a changenode we
             # assume the recipient must have, then the recipient must have
             # that filenode.
             for n in msngset:
                 clnode = cl.node(filerevlog.linkrev(n))
                 if clnode in has_cl_set:
                     hasset[n] = 1
             prune_parents(filerevlog, hasset, msngset)
 
         # A function generator function that sets up the a context for the
         # inner function.
         def lookup_filenode_link_func(fname):
             msngset = msng_filenode_set[fname]
             # Lookup the changenode the filenode belongs to.
             def lookup_filenode_link(fnode):
                 return msngset[fnode]
             return lookup_filenode_link
 
         # Now that we have all theses utility functions to help out and
         # logically divide up the task, generate the group.
         def gengroup():
             # The set of changed files starts empty.
             changedfiles = {}
             # Create a changenode group generator that will call our functions
             # back to lookup the owning changenode and collect information.
             group = cl.group(msng_cl_lst, identity,
                              manifest_and_file_collector(changedfiles))
             for chnk in group:
                 yield chnk
 
             # The list of manifests has been collected by the generator
             # calling our functions back.
             prune_manifests()
             msng_mnfst_lst = msng_mnfst_set.keys()
             # Sort the manifestnodes by revision number.
             msng_mnfst_lst.sort(cmp_by_rev_func(mnfst))
             # Create a generator for the manifestnodes that calls our lookup
             # and data collection functions back.
             group = mnfst.group(msng_mnfst_lst, lookup_manifest_link,
                                 filenode_collector(changedfiles))
             for chnk in group:
                 yield chnk
 
             # These are no longer needed, dereference and toss the memory for
             # them.
             msng_mnfst_lst = None
             msng_mnfst_set.clear()
 
             changedfiles = changedfiles.keys()
             changedfiles.sort()
             # Go through all our files in order sorted by name.
             for fname in changedfiles:
                 filerevlog = self.file(fname)
                 # Toss out the filenodes that the recipient isn't really
                 # missing.
                 if msng_filenode_set.has_key(fname):
                     prune_filenodes(fname, filerevlog)
                     msng_filenode_lst = msng_filenode_set[fname].keys()
                 else:
                     msng_filenode_lst = []
                 # If any filenodes are left, generate the group for them,
                 # otherwise don't bother.
                 if len(msng_filenode_lst) > 0:
                     yield changegroup.genchunk(fname)
                     # Sort the filenodes by their revision #
                     msng_filenode_lst.sort(cmp_by_rev_func(filerevlog))
                     # Create a group generator and only pass in a changenode
                     # lookup function as we need to collect no information
                     # from filenodes.
                     group = filerevlog.group(msng_filenode_lst,
                                              lookup_filenode_link_func(fname))
                     for chnk in group:
                         yield chnk
                 if msng_filenode_set.has_key(fname):
                     # Don't need this anymore, toss it to free memory.
                     del msng_filenode_set[fname]
             # Signal that no more groups are left.
             yield changegroup.closechunk()
 
             if msng_cl_lst:
                 self.hook('outgoing', node=hex(msng_cl_lst[0]), source=source)
 
         return util.chunkbuffer(gengroup())
 
     def changegroup(self, basenodes, source):
         """Generate a changegroup of all nodes that we have that a recipient
         doesn't.
 
         This is much easier than the previous function as we can assume that
         the recipient has any changenode we aren't sending them."""
 
         self.hook('preoutgoing', throw=True, source=source)
 
         cl = self.changelog
         nodes = cl.nodesbetween(basenodes, None)[0]
         revset = dict.fromkeys([cl.rev(n) for n in nodes])
 
         def identity(x):
             return x
 
         def gennodelst(revlog):
             for r in xrange(0, revlog.count()):
                 n = revlog.node(r)
                 if revlog.linkrev(n) in revset:
                     yield n
 
         def changed_file_collector(changedfileset):
             def collect_changed_files(clnode):
                 c = cl.read(clnode)
                 for fname in c[3]:
                     changedfileset[fname] = 1
             return collect_changed_files
 
         def lookuprevlink_func(revlog):
             def lookuprevlink(n):
                 return cl.node(revlog.linkrev(n))
             return lookuprevlink
 
         def gengroup():
             # construct a list of all changed files
             changedfiles = {}
 
             for chnk in cl.group(nodes, identity,
                                  changed_file_collector(changedfiles)):
                 yield chnk
             changedfiles = changedfiles.keys()
             changedfiles.sort()
 
             mnfst = self.manifest
             nodeiter = gennodelst(mnfst)
             for chnk in mnfst.group(nodeiter, lookuprevlink_func(mnfst)):
                 yield chnk
 
             for fname in changedfiles:
                 filerevlog = self.file(fname)
                 nodeiter = gennodelst(filerevlog)
                 nodeiter = list(nodeiter)
                 if nodeiter:
                     yield changegroup.genchunk(fname)
                     lookup = lookuprevlink_func(filerevlog)
                     for chnk in filerevlog.group(nodeiter, lookup):
                         yield chnk
 
             yield changegroup.closechunk()
 
             if nodes:
                 self.hook('outgoing', node=hex(nodes[0]), source=source)
 
         return util.chunkbuffer(gengroup())
 
     def addchangegroup(self, source, srctype):
         """add changegroup to repo.
         returns number of heads modified or added + 1."""
 
         def csmap(x):
             self.ui.debug(_("add changeset %s\n") % short(x))
             return cl.count()
 
         def revmap(x):
             return cl.rev(x)
 
         if not source:
             return 0
 
         self.hook('prechangegroup', throw=True, source=srctype)
 
         changesets = files = revisions = 0
 
         tr = self.transaction()
 
         # write changelog data to temp files so concurrent readers will not see
         # inconsistent view
         cl = None
         try:
             cl = appendfile.appendchangelog(self.opener, self.changelog.version)
 
             oldheads = len(cl.heads())
 
             # pull off the changeset group
             self.ui.status(_("adding changesets\n"))
             cor = cl.count() - 1
             chunkiter = changegroup.chunkiter(source)
             if cl.addgroup(chunkiter, csmap, tr, 1) is None:
                 raise util.Abort(_("received changelog group is empty"))
             cnr = cl.count() - 1
             changesets = cnr - cor
 
             # pull off the manifest group
             self.ui.status(_("adding manifests\n"))
             chunkiter = changegroup.chunkiter(source)
             # no need to check for empty manifest group here:
             # if the result of the merge of 1 and 2 is the same in 3 and 4,
             # no new manifest will be created and the manifest group will
             # be empty during the pull
             self.manifest.addgroup(chunkiter, revmap, tr)
 
             # process the files
             self.ui.status(_("adding file changes\n"))
             while 1:
                 f = changegroup.getchunk(source)
                 if not f:
                     break
                 self.ui.debug(_("adding %s revisions\n") % f)
                 fl = self.file(f)
                 o = fl.count()
                 chunkiter = changegroup.chunkiter(source)
                 if fl.addgroup(chunkiter, revmap, tr) is None:
                     raise util.Abort(_("received file revlog group is empty"))
                 revisions += fl.count() - o
                 files += 1
 
             cl.writedata()
         finally:
             if cl:
                 cl.cleanup()
 
         # make changelog see real files again
         self.changelog = changelog.changelog(self.opener, self.changelog.version)
         self.changelog.checkinlinesize(tr)
 
         newheads = len(self.changelog.heads())
         heads = ""
         if oldheads and newheads != oldheads:
             heads = _(" (%+d heads)") % (newheads - oldheads)
 
         self.ui.status(_("added %d changesets"
                          " with %d changes to %d files%s\n")
                          % (changesets, revisions, files, heads))
 
         if changesets > 0:
             self.hook('pretxnchangegroup', throw=True,
                       node=hex(self.changelog.node(cor+1)), source=srctype)
 
         tr.close()
 
         if changesets > 0:
             self.hook("changegroup", node=hex(self.changelog.node(cor+1)),
                       source=srctype)
 
             for i in range(cor + 1, cnr + 1):
                 self.hook("incoming", node=hex(self.changelog.node(i)),
                           source=srctype)
 
         return newheads - oldheads + 1
 
     def update(self, node, allow=False, force=False, choose=None,
                moddirstate=True, forcemerge=False, wlock=None, show_stats=True):
         pl = self.dirstate.parents()
         if not force and pl[1] != nullid:
             raise util.Abort(_("outstanding uncommitted merges"))
 
         err = False
 
         p1, p2 = pl[0], node
         pa = self.changelog.ancestor(p1, p2)
         m1n = self.changelog.read(p1)[0]
         m2n = self.changelog.read(p2)[0]
         man = self.manifest.ancestor(m1n, m2n)
         m1 = self.manifest.read(m1n)
         mf1 = self.manifest.readflags(m1n)
         m2 = self.manifest.read(m2n).copy()
         mf2 = self.manifest.readflags(m2n)
         ma = self.manifest.read(man)
         mfa = self.manifest.readflags(man)
 
         modified, added, removed, deleted, unknown = self.changes()
 
         # is this a jump, or a merge?  i.e. is there a linear path
         # from p1 to p2?
         linear_path = (pa == p1 or pa == p2)
 
         if allow and linear_path:
             raise util.Abort(_("there is nothing to merge, just use "
                                "'hg update' or look at 'hg heads'"))
         if allow and not forcemerge:
             if modified or added or removed:
                 raise util.Abort(_("outstanding uncommitted changes"))
 
         if not forcemerge and not force:
             for f in unknown:
                 if f in m2:
                     t1 = self.wread(f)
                     t2 = self.file(f).read(m2[f])
                     if cmp(t1, t2) != 0:
                         raise util.Abort(_("'%s' already exists in the working"
                                            " dir and differs from remote") % f)
 
         # resolve the manifest to determine which files
         # we care about merging
         self.ui.note(_("resolving manifests\n"))
         self.ui.debug(_(" force %s allow %s moddirstate %s linear %s\n") %
                       (force, allow, moddirstate, linear_path))
         self.ui.debug(_(" ancestor %s local %s remote %s\n") %
                       (short(man), short(m1n), short(m2n)))
 
         merge = {}
         get = {}
         remove = []
 
         # construct a working dir manifest
         mw = m1.copy()
         mfw = mf1.copy()
         umap = dict.fromkeys(unknown)
 
         for f in added + modified + unknown:
             mw[f] = ""
             mfw[f] = util.is_exec(self.wjoin(f), mfw.get(f, False))
 
         if moddirstate and not wlock:
             wlock = self.wlock()
 
         for f in deleted + removed:
             if f in mw:
                 del mw[f]
 
             # If we're jumping between revisions (as opposed to merging),
             # and if neither the working directory nor the target rev has
             # the file, then we need to remove it from the dirstate, to
             # prevent the dirstate from listing the file when it is no
             # longer in the manifest.
             if moddirstate and linear_path and f not in m2:
                 self.dirstate.forget((f,))
 
         # Compare manifests
         for f, n in mw.iteritems():
             if choose and not choose(f):
                 continue
             if f in m2:
                 s = 0
 
                 # is the wfile new since m1, and match m2?
                 if f not in m1:
                     t1 = self.wread(f)
                     t2 = self.file(f).read(m2[f])
                     if cmp(t1, t2) == 0:
                         n = m2[f]
                     del t1, t2
 
                 # are files different?
                 if n != m2[f]:
                     a = ma.get(f, nullid)
                     # are both different from the ancestor?
                     if n != a and m2[f] != a:
                         self.ui.debug(_(" %s versions differ, resolve\n") % f)
                         # merge executable bits
                         # "if we changed or they changed, change in merge"
                         a, b, c = mfa.get(f, 0), mfw[f], mf2[f]
                         mode = ((a^b) | (a^c)) ^ a
                         merge[f] = (m1.get(f, nullid), m2[f], mode)
                         s = 1
                     # are we clobbering?
                     # is remote's version newer?
                     # or are we going back in time?
                     elif force or m2[f] != a or (p2 == pa and mw[f] == m1[f]):
                         self.ui.debug(_(" remote %s is newer, get\n") % f)
                         get[f] = m2[f]
                         s = 1
                 elif f in umap or f in added:
                     # this unknown file is the same as the checkout
                     # we need to reset the dirstate if the file was added
                     get[f] = m2[f]
 
                 if not s and mfw[f] != mf2[f]:
                     if force:
                         self.ui.debug(_(" updating permissions for %s\n") % f)
                         util.set_exec(self.wjoin(f), mf2[f])
                     else:
                         a, b, c = mfa.get(f, 0), mfw[f], mf2[f]
                         mode = ((a^b) | (a^c)) ^ a
                         if mode != b:
                             self.ui.debug(_(" updating permissions for %s\n")
                                           % f)
                             util.set_exec(self.wjoin(f), mode)
                 del m2[f]
             elif f in ma:
                 if n != ma[f]:
                     r = _("d")
                     if not force and (linear_path or allow):
                         r = self.ui.prompt(
                             (_(" local changed %s which remote deleted\n") % f) +
                              _("(k)eep or (d)elete?"), _("[kd]"), _("k"))
                     if r == _("d"):
                         remove.append(f)
                 else:
                     self.ui.debug(_("other deleted %s\n") % f)
                     remove.append(f) # other deleted it
             else:
                 # file is created on branch or in working directory
                 if force and f not in umap:
                     self.ui.debug(_("remote deleted %s, clobbering\n") % f)
                     remove.append(f)
                 elif n == m1.get(f, nullid): # same as parent
                     if p2 == pa: # going backwards?
                         self.ui.debug(_("remote deleted %s\n") % f)
                         remove.append(f)
                     else:
                         self.ui.debug(_("local modified %s, keeping\n") % f)
                 else:
                     self.ui.debug(_("working dir created %s, keeping\n") % f)
 
         for f, n in m2.iteritems():
             if choose and not choose(f):
                 continue
             if f[0] == "/":
                 continue
             if f in ma and n != ma[f]:
                 r = _("k")
                 if not force and (linear_path or allow):
                     r = self.ui.prompt(
                         (_("remote changed %s which local deleted\n") % f) +
                          _("(k)eep or (d)elete?"), _("[kd]"), _("k"))
                 if r == _("k"):
                     get[f] = n
             elif f not in ma:
                 self.ui.debug(_("remote created %s\n") % f)
                 get[f] = n
             else:
                 if force or p2 == pa: # going backwards?
                     self.ui.debug(_("local deleted %s, recreating\n") % f)
                     get[f] = n
                 else:
                     self.ui.debug(_("local deleted %s\n") % f)
 
         del mw, m1, m2, ma
 
         if force:
             for f in merge:
                 get[f] = merge[f][1]
             merge = {}
 
         if linear_path or force:
             # we don't need to do any magic, just jump to the new rev
             branch_merge = False
             p1, p2 = p2, nullid
         else:
             if not allow:
                 self.ui.status(_("this update spans a branch"
                                  " affecting the following files:\n"))
                 fl = merge.keys() + get.keys()
                 fl.sort()
                 for f in fl:
                     cf = ""
                     if f in merge:
                         cf = _(" (resolve)")
                     self.ui.status(" %s%s\n" % (f, cf))
                 self.ui.warn(_("aborting update spanning branches!\n"))
                 self.ui.status(_("(use 'hg merge' to merge across branches"
                                  " or 'hg update -C' to lose changes)\n"))
                 return 1
             branch_merge = True
 
         xp1 = hex(p1)
         xp2 = hex(p2)
         if p2 == nullid: xxp2 = ''
         else: xxp2 = xp2
 
         self.hook('preupdate', throw=True, parent1=xp1, parent2=xxp2)
 
         # get the files we don't need to change
         files = get.keys()
         files.sort()
         for f in files:
             if f[0] == "/":
                 continue
             self.ui.note(_("getting %s\n") % f)
             t = self.file(f).read(get[f])
             self.wwrite(f, t)
             util.set_exec(self.wjoin(f), mf2[f])
             if moddirstate:
                 if branch_merge:
                     self.dirstate.update([f], 'n', st_mtime=-1)
                 else:
                     self.dirstate.update([f], 'n')
 
         # merge the tricky bits
         failedmerge = []
         files = merge.keys()
         files.sort()
         for f in files:
             self.ui.status(_("merging %s\n") % f)
             my, other, flag = merge[f]
             ret = self.merge3(f, my, other, xp1, xp2)
             if ret:
                 err = True
                 failedmerge.append(f)
             util.set_exec(self.wjoin(f), flag)
             if moddirstate:
                 if branch_merge:
                     # We've done a branch merge, mark this file as merged
                     # so that we properly record the merger later
                     self.dirstate.update([f], 'm')
                 else:
                     # We've update-merged a locally modified file, so
                     # we set the dirstate to emulate a normal checkout
                     # of that file some time in the past. Thus our
                     # merge will appear as a normal local file
                     # modification.
                     f_len = len(self.file(f).read(other))
                     self.dirstate.update([f], 'n', st_size=f_len, st_mtime=-1)
 
         remove.sort()
         for f in remove:
             self.ui.note(_("removing %s\n") % f)
             util.audit_path(f)
             try:
                 util.unlink(self.wjoin(f))
             except OSError, inst:
                 if inst.errno != errno.ENOENT:
                     self.ui.warn(_("update failed to remove %s: %s!\n") %
                                  (f, inst.strerror))
         if moddirstate:
             if branch_merge:
                 self.dirstate.update(remove, 'r')
             else:
                 self.dirstate.forget(remove)
 
         if moddirstate:
             self.dirstate.setparents(p1, p2)
 
         if show_stats:
             stats = ((len(get), _("updated")),
                      (len(merge) - len(failedmerge), _("merged")),
                      (len(remove), _("removed")),
                      (len(failedmerge), _("unresolved")))
             note = ", ".join([_("%d files %s") % s for s in stats])
             self.ui.status("%s\n" % note)
         if moddirstate:
             if branch_merge:
                 if failedmerge:
                     self.ui.status(_("There are unresolved merges,"
                                     " you can redo the full merge using:\n"
                                     "  hg update -C %s\n"
                                     "  hg merge %s\n"
                                     % (self.changelog.rev(p1),
                                         self.changelog.rev(p2))))
                 else:
                     self.ui.status(_("(branch merge, don't forget to commit)\n"))
             elif failedmerge:
                 self.ui.status(_("There are unresolved merges with"
                                  " locally modified files.\n"))
 
         self.hook('update', parent1=xp1, parent2=xxp2, error=int(err))
         return err
 
     def merge3(self, fn, my, other, p1, p2):
         """perform a 3-way merge in the working directory"""
 
         def temp(prefix, node):
             pre = "%s~%s." % (os.path.basename(fn), prefix)
             (fd, name) = tempfile.mkstemp(prefix=pre)
             f = os.fdopen(fd, "wb")
             self.wwrite(fn, fl.read(node), f)
             f.close()
             return name
 
         fl = self.file(fn)
         base = fl.ancestor(my, other)
         a = self.wjoin(fn)
         b = temp("base", base)
         c = temp("other", other)
 
         self.ui.note(_("resolving %s\n") % fn)
         self.ui.debug(_("file %s: my %s other %s ancestor %s\n") %
                               (fn, short(my), short(other), short(base)))
 
         cmd = (os.environ.get("HGMERGE") or self.ui.config("ui", "merge")
                or "hgmerge")
         r = util.system('%s "%s" "%s" "%s"' % (cmd, a, b, c), cwd=self.root,
                         environ={'HG_FILE': fn,
                                  'HG_MY_NODE': p1,
                                  'HG_OTHER_NODE': p2,
                                  'HG_FILE_MY_NODE': hex(my),
                                  'HG_FILE_OTHER_NODE': hex(other),
                                  'HG_FILE_BASE_NODE': hex(base)})
         if r:
             self.ui.warn(_("merging %s failed!\n") % fn)
 
         os.unlink(b)
         os.unlink(c)
         return r
 
     def verify(self):
         filelinkrevs = {}
         filenodes = {}
         changesets = revisions = files = 0
         errors = [0]
         warnings = [0]
         neededmanifests = {}
 
         def err(msg):
             self.ui.warn(msg + "\n")
             errors[0] += 1
 
         def warn(msg):
             self.ui.warn(msg + "\n")
             warnings[0] += 1
 
         def checksize(obj, name):
             d = obj.checksize()
             if d[0]:
                 err(_("%s data length off by %d bytes") % (name, d[0]))
             if d[1]:
                 err(_("%s index contains %d extra bytes") % (name, d[1]))
 
         def checkversion(obj, name):
             if obj.version != revlog.REVLOGV0:
                 if not revlogv1:
                     warn(_("warning: `%s' uses revlog format 1") % name)
             elif revlogv1:
                 warn(_("warning: `%s' uses revlog format 0") % name)
 
         revlogv1 = self.revlogversion != revlog.REVLOGV0
         if self.ui.verbose or revlogv1 != self.revlogv1:
             self.ui.status(_("repository uses revlog format %d\n") %
                            (revlogv1 and 1 or 0))
 
         seen = {}
         self.ui.status(_("checking changesets\n"))
         checksize(self.changelog, "changelog")
 
         for i in range(self.changelog.count()):
             changesets += 1
             n = self.changelog.node(i)
             l = self.changelog.linkrev(n)
             if l != i:
                 err(_("incorrect link (%d) for changeset revision %d") %(l, i))
             if n in seen:
                 err(_("duplicate changeset at revision %d") % i)
             seen[n] = 1
 
             for p in self.changelog.parents(n):
                 if p not in self.changelog.nodemap:
                     err(_("changeset %s has unknown parent %s") %
                                  (short(n), short(p)))
             try:
                 changes = self.changelog.read(n)
             except KeyboardInterrupt:
                 self.ui.warn(_("interrupted"))
                 raise
             except Exception, inst:
                 err(_("unpacking changeset %s: %s") % (short(n), inst))
                 continue
 
             neededmanifests[changes[0]] = n
 
             for f in changes[3]:
                 filelinkrevs.setdefault(f, []).append(i)
 
         seen = {}
         self.ui.status(_("checking manifests\n"))
         checkversion(self.manifest, "manifest")
         checksize(self.manifest, "manifest")
 
         for i in range(self.manifest.count()):
             n = self.manifest.node(i)
             l = self.manifest.linkrev(n)
 
             if l < 0 or l >= self.changelog.count():
                 err(_("bad manifest link (%d) at revision %d") % (l, i))
 
             if n in neededmanifests:
                 del neededmanifests[n]
 
             if n in seen:
                 err(_("duplicate manifest at revision %d") % i)
 
             seen[n] = 1
 
             for p in self.manifest.parents(n):
                 if p not in self.manifest.nodemap:
                     err(_("manifest %s has unknown parent %s") %
                         (short(n), short(p)))
 
             try:
                 delta = mdiff.patchtext(self.manifest.delta(n))
             except KeyboardInterrupt:
                 self.ui.warn(_("interrupted"))
                 raise
             except Exception, inst:
                 err(_("unpacking manifest %s: %s") % (short(n), inst))
                 continue
 
             try:
                 ff = [ l.split('\0') for l in delta.splitlines() ]
                 for f, fn in ff:
                     filenodes.setdefault(f, {})[bin(fn[:40])] = 1
             except (ValueError, TypeError), inst:
                 err(_("broken delta in manifest %s: %s") % (short(n), inst))
 
         self.ui.status(_("crosschecking files in changesets and manifests\n"))
 
         for m, c in neededmanifests.items():
             err(_("Changeset %s refers to unknown manifest %s") %
                 (short(m), short(c)))
         del neededmanifests
 
         for f in filenodes:
             if f not in filelinkrevs:
                 err(_("file %s in manifest but not in changesets") % f)
 
         for f in filelinkrevs:
             if f not in filenodes:
                 err(_("file %s in changeset but not in manifest") % f)
 
         self.ui.status(_("checking files\n"))
         ff = filenodes.keys()
         ff.sort()
         for f in ff:
             if f == "/dev/null":
                 continue
             files += 1
             if not f:
                 err(_("file without name in manifest %s") % short(n))
                 continue
             fl = self.file(f)
             checkversion(fl, f)
             checksize(fl, f)
 
             nodes = {nullid: 1}
             seen = {}
             for i in range(fl.count()):
                 revisions += 1
                 n = fl.node(i)
 
                 if n in seen:
                     err(_("%s: duplicate revision %d") % (f, i))
                 if n not in filenodes[f]:
                     err(_("%s: %d:%s not in manifests") % (f, i, short(n)))
                 else:
                     del filenodes[f][n]
 
                 flr = fl.linkrev(n)
                 if flr not in filelinkrevs.get(f, []):
                     err(_("%s:%s points to unexpected changeset %d")
                             % (f, short(n), flr))
                 else:
                     filelinkrevs[f].remove(flr)
 
                 # verify contents
                 try:
                     t = fl.read(n)
                 except KeyboardInterrupt:
                     self.ui.warn(_("interrupted"))
                     raise
                 except Exception, inst:
                     err(_("unpacking file %s %s: %s") % (f, short(n), inst))
 
                 # verify parents
                 (p1, p2) = fl.parents(n)
                 if p1 not in nodes:
                     err(_("file %s:%s unknown parent 1 %s") %
                         (f, short(n), short(p1)))
                 if p2 not in nodes:
                     err(_("file %s:%s unknown parent 2 %s") %
                             (f, short(n), short(p1)))
                 nodes[n] = 1
 
             # cross-check
             for node in filenodes[f]:
                 err(_("node %s in manifests not in %s") % (hex(node), f))
 
         self.ui.status(_("%d files, %d changesets, %d total revisions\n") %
                        (files, changesets, revisions))
 
         if warnings[0]:
             self.ui.warn(_("%d warnings encountered!\n") % warnings[0])
         if errors[0]:
             self.ui.warn(_("%d integrity errors encountered!\n") % errors[0])
             return 1
 
     def stream_in(self, remote):
+        fp = remote.stream_out()
+        resp = int(fp.readline())
+        if resp != 0:
+            raise util.Abort(_('operation forbidden by server'))
         self.ui.status(_('streaming all changes\n'))
-        fp = remote.stream_out()
         total_files, total_bytes = map(int, fp.readline().split(' ', 1))
         self.ui.status(_('%d files to transfer, %s of data\n') %
                        (total_files, util.bytecount(total_bytes)))
         start = time.time()
         for i in xrange(total_files):
             name, size = fp.readline().split('\0', 1)
             size = int(size)
             self.ui.debug('adding %s (%s)\n' % (name, util.bytecount(size)))
             ofp = self.opener(name, 'w')
             for chunk in util.filechunkiter(fp, limit=size):
                 ofp.write(chunk)
             ofp.close()
         elapsed = time.time() - start
         self.ui.status(_('transferred %s in %.1f seconds (%s/sec)\n') %
                        (util.bytecount(total_bytes), elapsed,
                         util.bytecount(total_bytes / elapsed)))
         self.reload()
         return len(self.heads()) + 1
         
     def clone(self, remote, heads=[], stream=False):
         '''clone remote repository.
 
         keyword arguments:
         heads: list of revs to clone (forces use of pull)
-        pull: force use of pull, even if remote can stream'''
+        stream: use streaming clone if possible'''
 
-        # now, all clients that can stream can read repo formats
-        # supported by all servers that can stream.
+        # now, all clients that can request uncompressed clones can
+        # read repo formats supported by all servers that can serve
+        # them.
 
         # if revlog format changes, client will have to check version
-        # and format flags on "stream" capability, and stream only if
-        # compatible.
+        # and format flags on "stream" capability, and use
+        # uncompressed only if compatible.
 
         if stream and not heads and remote.capable('stream'):
             return self.stream_in(remote)
         return self.pull(remote, heads)
 
 # used to avoid circular references so destructors work
 def aftertrans(base):
     p = base
     def a():
         util.rename(os.path.join(p, "journal"), os.path.join(p, "undo"))
         util.rename(os.path.join(p, "journal.dirstate"),
                     os.path.join(p, "undo.dirstate"))
     return a
 

mercurial/sshserver.py

@@ -1,171 +1,173 b''
 # sshserver.py - ssh protocol server support 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
 from i18n import gettext as _
 from node import *
 demandload(globals(), "os streamclone sys tempfile util")
 
 class sshserver(object):
     def __init__(self, ui, repo):
         self.ui = ui
         self.repo = repo
         self.lock = None
         self.fin = sys.stdin
         self.fout = sys.stdout
 
         sys.stdout = sys.stderr
 
         # Prevent insertion/deletion of CRs
         util.set_binary(self.fin)
         util.set_binary(self.fout)
 
     def getarg(self):
         argline = self.fin.readline()[:-1]
         arg, l = argline.split()
         val = self.fin.read(int(l))
         return arg, val
 
     def respond(self, v):
         self.fout.write("%d\n" % len(v))
         self.fout.write(v)
         self.fout.flush()
 
     def serve_forever(self):
         while self.serve_one(): pass
         sys.exit(0)
 
     def serve_one(self):
         cmd = self.fin.readline()[:-1]
         if cmd:
             impl = getattr(self, 'do_' + cmd, None)
             if impl: impl()
             else: self.respond("")
         return cmd != ''
 
     def do_heads(self):
         h = self.repo.heads()
         self.respond(" ".join(map(hex, h)) + "\n")
 
     def do_hello(self):
         '''the hello command returns a set of lines describing various
         interesting things about the server, in an RFC822-like format.
         Currently the only one defined is "capabilities", which
         consists of a line in the form:
 
         capabilities: space separated list of tokens
         '''
 
-        r = "capabilities: unbundle stream=%d\n" % (self.repo.revlogversion,)
-        self.respond(r)
+        caps = ['unbundle']
+        if self.ui.configbool('server', 'uncompressed'):
+            caps.append('stream=%d' % self.repo.revlogversion)
+        self.respond("capabilities: %s\n" % (' '.join(caps),))
 
     def do_lock(self):
         '''DEPRECATED - allowing remote client to lock repo is not safe'''
 
         self.lock = self.repo.lock()
         self.respond("")
 
     def do_unlock(self):
         '''DEPRECATED'''
 
         if self.lock:
             self.lock.release()
         self.lock = None
         self.respond("")
 
     def do_branches(self):
         arg, nodes = self.getarg()
         nodes = map(bin, nodes.split(" "))
         r = []
         for b in self.repo.branches(nodes):
             r.append(" ".join(map(hex, b)) + "\n")
         self.respond("".join(r))
 
     def do_between(self):
         arg, pairs = self.getarg()
         pairs = [map(bin, p.split("-")) for p in pairs.split(" ")]
         r = []
         for b in self.repo.between(pairs):
             r.append(" ".join(map(hex, b)) + "\n")
         self.respond("".join(r))
 
     def do_changegroup(self):
         nodes = []
         arg, roots = self.getarg()
         nodes = map(bin, roots.split(" "))
 
         cg = self.repo.changegroup(nodes, 'serve')
         while True:
             d = cg.read(4096)
             if not d:
                 break
             self.fout.write(d)
 
         self.fout.flush()
 
     def do_addchangegroup(self):
         '''DEPRECATED'''
 
         if not self.lock:
             self.respond("not locked")
             return
 
         self.respond("")
         r = self.repo.addchangegroup(self.fin, 'serve')
         self.respond(str(r))
 
     def do_unbundle(self):
         their_heads = self.getarg()[1].split()
 
         def check_heads():
             heads = map(hex, self.repo.heads())
             return their_heads == [hex('force')] or their_heads == heads
 
         # fail early if possible
         if not check_heads():
             self.respond(_('unsynced changes'))
             return
 
         self.respond('')
 
         # write bundle data to temporary file because it can be big
 
         try:
             fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')
             fp = os.fdopen(fd, 'wb+')
 
             count = int(self.fin.readline())
             while count:
                 fp.write(self.fin.read(count))
                 count = int(self.fin.readline())
 
             was_locked = self.lock is not None
             if not was_locked:
                 self.lock = self.repo.lock()
             try:
                 if not check_heads():
                     # someone else committed/pushed/unbundled while we
                     # were transferring data
                     self.respond(_('unsynced changes'))
                     return
                 self.respond('')
 
                 # push can proceed
 
                 fp.seek(0)
                 r = self.repo.addchangegroup(fp, 'serve')
                 self.respond(str(r))
             finally:
                 if not was_locked:
                     self.lock.release()
                     self.lock = None
         finally:
             fp.close()
             os.unlink(tempname)
 
     def do_stream_out(self):
         streamclone.stream_out(self.repo, self.fout)

mercurial/streamclone.py

@@ -1,82 +1,90 b''
 # streamclone.py - streaming clone server support for mercurial
 #
 # Copyright 2006 Vadim Gelfer <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from demandload import demandload
 from i18n import gettext as _
 demandload(globals(), "os stat util")
 
 # if server supports streaming clone, it advertises "stream"
 # capability with value that is version+flags of repo it is serving.
 # client only streams if it can read that repo format.
 
 def walkrepo(root):
     '''iterate over metadata files in repository.
     walk in natural (sorted) order.
     yields 2-tuples: name of .d or .i file, size of file.'''
 
     strip_count = len(root) + len(os.sep)
     def walk(path, recurse):
         ents = os.listdir(path)
         ents.sort()
         for e in ents:
             pe = os.path.join(path, e)
             st = os.lstat(pe)
             if stat.S_ISDIR(st.st_mode):
                 if recurse:
                     for x in walk(pe, True):
                         yield x
             else:
                 if not stat.S_ISREG(st.st_mode) or len(e) < 2:
                     continue
                 sfx = e[-2:]
                 if sfx in ('.d', '.i'):
                     yield pe[strip_count:], st.st_size
     # write file data first
     for x in walk(os.path.join(root, 'data'), True):
         yield x
     # write manifest before changelog
     meta = list(walk(root, False))
-    meta.sort(reverse=True)
+    meta.sort()
+    meta.reverse()
     for x in meta:
         yield x
 
 # stream file format is simple.
 #
 # server writes out line that says how many files, how many total
 # bytes.  separator is ascii space, byte counts are strings.
 #
 # then for each file:
 #
 #   server writes out line that says file name, how many bytes in
 #   file.  separator is ascii nul, byte count is string.
 #
 #   server writes out raw file data.
 
 def stream_out(repo, fileobj):
     '''stream out all metadata files in repository.
     writes to file-like object, must support write() and optional flush().'''
+
+    if not repo.ui.configbool('server', 'uncompressed'):
+        fileobj.write('1\n')
+        return
+
+    fileobj.write('0\n')
+
     # get consistent snapshot of repo. lock during scan so lock not
     # needed while we stream, and commits can happen.
     lock = repo.lock()
     repo.ui.debug('scanning\n')
     entries = []
     total_bytes = 0
     for name, size in walkrepo(repo.path):
         entries.append((name, size))
         total_bytes += size
     lock.release()
 
     repo.ui.debug('%d files, %d bytes to transfer\n' %
                   (len(entries), total_bytes))
     fileobj.write('%d %d\n' % (len(entries), total_bytes))
     for name, size in entries:
         repo.ui.debug('sending %s (%d bytes)\n' % (name, size))
         fileobj.write('%s\0%d\n' % (name, size))
         for chunk in util.filechunkiter(repo.opener(name), limit=size):
             fileobj.write(chunk)
     flush = getattr(fileobj, 'flush', None)
     if flush: flush()

mercurial/ui.py

@@ -1,363 +1,363 b''
 # ui.py - user interface bits 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 i18n import gettext as _
 from demandload import *
 demandload(globals(), "errno getpass os re smtplib socket sys tempfile")
 demandload(globals(), "ConfigParser templater traceback util")
 
 class ui(object):
     def __init__(self, verbose=False, debug=False, quiet=False,
                  interactive=True, traceback=False, parentui=None):
         self.overlay = {}
         if parentui is None:
             # this is the parent of all ui children
             self.parentui = None
             self.cdata = ConfigParser.SafeConfigParser()
             self.readconfig(util.rcpath())
 
             self.quiet = self.configbool("ui", "quiet")
             self.verbose = self.configbool("ui", "verbose")
             self.debugflag = self.configbool("ui", "debug")
             self.interactive = self.configbool("ui", "interactive", True)
             self.traceback = traceback
 
             self.updateopts(verbose, debug, quiet, interactive)
             self.diffcache = None
             self.header = []
             self.prev_header = []
             self.revlogopts = self.configrevlog()
         else:
             # parentui may point to an ui object which is already a child
             self.parentui = parentui.parentui or parentui
             parent_cdata = self.parentui.cdata
             self.cdata = ConfigParser.SafeConfigParser(parent_cdata.defaults())
             # make interpolation work
             for section in parent_cdata.sections():
                 self.cdata.add_section(section)
                 for name, value in parent_cdata.items(section, raw=True):
                     self.cdata.set(section, name, value)
 
     def __getattr__(self, key):
         return getattr(self.parentui, key)
 
     def updateopts(self, verbose=False, debug=False, quiet=False,
                    interactive=True, traceback=False, config=[]):
         self.quiet = (self.quiet or quiet) and not verbose and not debug
         self.verbose = (self.verbose or verbose) or debug
         self.debugflag = (self.debugflag or debug)
         self.interactive = (self.interactive and interactive)
         self.traceback = self.traceback or traceback
         for cfg in config:
             try:
                 name, value = cfg.split('=', 1)
                 section, name = name.split('.', 1)
                 if not self.cdata.has_section(section):
                     self.cdata.add_section(section)
                 if not section or not name:
                     raise IndexError
                 self.cdata.set(section, name, value)
             except (IndexError, ValueError):
                 raise util.Abort(_('malformed --config option: %s') % cfg)
 
     def readconfig(self, fn, root=None):
         if isinstance(fn, basestring):
             fn = [fn]
         for f in fn:
             try:
                 self.cdata.read(f)
             except ConfigParser.ParsingError, inst:
                 raise util.Abort(_("Failed to parse %s\n%s") % (f, inst))
         # translate paths relative to root (or home) into absolute paths
         if root is None:
             root = os.path.expanduser('~')
         for name, path in self.configitems("paths"):
             if path and "://" not in path and not os.path.isabs(path):
                 self.cdata.set("paths", name, os.path.join(root, path))
 
     def setconfig(self, section, name, val):
         self.overlay[(section, name)] = val
 
     def config(self, section, name, default=None):
         if self.overlay.has_key((section, name)):
             return self.overlay[(section, name)]
         if self.cdata.has_option(section, name):
             try:
                 return self.cdata.get(section, name)
             except ConfigParser.InterpolationError, inst:
                 raise util.Abort(_("Error in configuration:\n%s") % inst)
         if self.parentui is None:
             return default
         else:
             return self.parentui.config(section, name, default)
 
     def configlist(self, section, name, default=None):
         """Return a list of comma/space separated strings"""
         result = self.config(section, name)
         if result is None:
             result = default or []
         if isinstance(result, basestring):
             result = result.replace(",", " ").split()
         return result
 
     def configbool(self, section, name, default=False):
         if self.overlay.has_key((section, name)):
             return self.overlay[(section, name)]
         if self.cdata.has_option(section, name):
             try:
                 return self.cdata.getboolean(section, name)
             except ConfigParser.InterpolationError, inst:
                 raise util.Abort(_("Error in configuration:\n%s") % inst)
         if self.parentui is None:
             return default
         else:
             return self.parentui.configbool(section, name, default)
 
     def has_config(self, section):
         '''tell whether section exists in config.'''
         return self.cdata.has_section(section)
 
     def configitems(self, section):
         items = {}
         if self.parentui is not None:
             items = dict(self.parentui.configitems(section))
         if self.cdata.has_section(section):
             try:
                 items.update(dict(self.cdata.items(section)))
             except ConfigParser.InterpolationError, inst:
                 raise util.Abort(_("Error in configuration:\n%s") % inst)
         x = items.items()
         x.sort()
         return x
 
     def walkconfig(self, seen=None):
         if seen is None:
             seen = {}
         for (section, name), value in self.overlay.iteritems():
             yield section, name, value
             seen[section, name] = 1
         for section in self.cdata.sections():
             for name, value in self.cdata.items(section):
                 if (section, name) in seen: continue
                 yield section, name, value.replace('\n', '\\n')
                 seen[section, name] = 1
         if self.parentui is not None:
             for parent in self.parentui.walkconfig(seen):
                 yield parent
 
     def extensions(self):
         result = self.configitems("extensions")
         for i, (key, value) in enumerate(result):
             if value:
                 result[i] = (key, os.path.expanduser(value))
         return result
 
     def hgignorefiles(self):
         result = []
         for key, value in self.configitems("ui"):
             if key == 'ignore' or key.startswith('ignore.'):
                 result.append(os.path.expanduser(value))
         return result
 
     def configrevlog(self):
         result = {}
         for key, value in self.configitems("revlog"):
             result[key.lower()] = value
         return result
 
     def diffopts(self):
         if self.diffcache:
             return self.diffcache
         result = {'showfunc': True, 'ignorews': False,
                   'ignorewsamount': False, 'ignoreblanklines': False}
         for key, value in self.configitems("diff"):
             if value:
                 result[key.lower()] = (value.lower() == 'true')
         self.diffcache = result
         return result
 
     def username(self):
         """Return default username to be used in commits.
 
         Searched in this order: $HGUSER, [ui] section of hgrcs, $EMAIL
         and stop searching if one of these is set.
         Abort if found username is an empty string to force specifying
         the commit user elsewhere, e.g. with line option or repo hgrc.
         If not found, use ($LOGNAME or $USER or $LNAME or
         $USERNAME) +"@full.hostname".
         """
         user = os.environ.get("HGUSER")
         if user is None:
             user = self.config("ui", "username")
         if user is None:
             user = os.environ.get("EMAIL")
         if user is None:
             try:
                 user = '%s@%s' % (getpass.getuser(), socket.getfqdn())
             except KeyError:
                 raise util.Abort(_("Please specify a username."))
         return user
 
     def shortuser(self, user):
         """Return a short representation of a user name or email address."""
         if not self.verbose: user = util.shortuser(user)
         return user
 
     def expandpath(self, loc, default=None):
         """Return repository location relative to cwd or from [paths]"""
-        if "://" in loc or os.path.exists(loc):
+        if "://" in loc or os.path.isdir(loc):
             return loc
 
         path = self.config("paths", loc)
         if not path and default is not None:
             path = self.config("paths", default)
         return path or loc
 
     def setconfig_remoteopts(self, **opts):
         if opts.get('ssh'):
             self.setconfig("ui", "ssh", opts['ssh'])
         if opts.get('remotecmd'):
             self.setconfig("ui", "remotecmd", opts['remotecmd'])
 
     def write(self, *args):
         if self.header:
             if self.header != self.prev_header:
                 self.prev_header = self.header
                 self.write(*self.header)
             self.header = []
         for a in args:
             sys.stdout.write(str(a))
 
     def write_header(self, *args):
         for a in args:
             self.header.append(str(a))
 
     def write_err(self, *args):
         try:
             if not sys.stdout.closed: sys.stdout.flush()
             for a in args:
                 sys.stderr.write(str(a))
         except IOError, inst:
             if inst.errno != errno.EPIPE:
                 raise
 
     def flush(self):
         try: sys.stdout.flush()
         except: pass
         try: sys.stderr.flush()
         except: pass
 
     def readline(self):
         return sys.stdin.readline()[:-1]
     def prompt(self, msg, pat=None, default="y"):
         if not self.interactive: return default
         while 1:
             self.write(msg, " ")
             r = self.readline()
             if not pat or re.match(pat, r):
                 return r
             else:
                 self.write(_("unrecognized response\n"))
     def getpass(self, prompt=None, default=None):
         if not self.interactive: return default
         return getpass.getpass(prompt or _('password: '))
     def status(self, *msg):
         if not self.quiet: self.write(*msg)
     def warn(self, *msg):
         self.write_err(*msg)
     def note(self, *msg):
         if self.verbose: self.write(*msg)
     def debug(self, *msg):
         if self.debugflag: self.write(*msg)
     def edit(self, text, user):
         (fd, name) = tempfile.mkstemp(prefix="hg-editor-", suffix=".txt",
                                       text=True)
         try:
             f = os.fdopen(fd, "w")
             f.write(text)
             f.close()
 
             editor = (os.environ.get("HGEDITOR") or
                     self.config("ui", "editor") or
                     os.environ.get("EDITOR", "vi"))
 
             util.system("%s \"%s\"" % (editor, name),
                         environ={'HGUSER': user},
                         onerr=util.Abort, errprefix=_("edit failed"))
 
             f = open(name)
             t = f.read()
             f.close()
             t = re.sub("(?m)^HG:.*\n", "", t)
         finally:
             os.unlink(name)
 
         return t
 
     def sendmail(self):
         '''send mail message. object returned has one method, sendmail.
         call as sendmail(sender, list-of-recipients, msg).'''
 
         def smtp():
             '''send mail using smtp.'''
 
             local_hostname = self.config('smtp', 'local_hostname')
             s = smtplib.SMTP(local_hostname=local_hostname)
             mailhost = self.config('smtp', 'host')
             if not mailhost:
                 raise util.Abort(_('no [smtp]host in hgrc - cannot send mail'))
             mailport = int(self.config('smtp', 'port', 25))
             self.note(_('sending mail: smtp host %s, port %s\n') %
                       (mailhost, mailport))
             s.connect(host=mailhost, port=mailport)
             if self.configbool('smtp', 'tls'):
                 self.note(_('(using tls)\n'))
                 s.ehlo()
                 s.starttls()
                 s.ehlo()
             username = self.config('smtp', 'username')
             password = self.config('smtp', 'password')
             if username and password:
                 self.note(_('(authenticating to mail server as %s)\n') %
                           (username))
                 s.login(username, password)
             return s
 
         class sendmail(object):
             '''send mail using sendmail.'''
 
             def __init__(self, ui, program):
                 self.ui = ui
                 self.program = program
 
             def sendmail(self, sender, recipients, msg):
                 cmdline = '%s -f %s %s' % (
                     self.program, templater.email(sender),
                     ' '.join(map(templater.email, recipients)))
                 self.ui.note(_('sending mail: %s\n') % cmdline)
                 fp = os.popen(cmdline, 'w')
                 fp.write(msg)
                 ret = fp.close()
                 if ret:
                     raise util.Abort('%s %s' % (
                         os.path.basename(self.program.split(None, 1)[0]),
                         util.explain_exit(ret)[0]))
 
         method = self.config('email', 'method', 'smtp')
         if method == 'smtp':
             mail = smtp()
         else:
             mail = sendmail(self, method)
         return mail
 
     def print_exc(self):
         '''print exception traceback if traceback printing enabled.
         only to call in exception handler. returns true if traceback
         printed.'''
         if self.traceback:
             traceback.print_exc()
         return self.traceback

tests/test-backout.out

@@ -1,31 +1,51 b''
 # basic operation
 adding a
 reverting a
 changeset 2:b38a34ddfd9f backs out changeset 1:a820f4f40a57
 a
 # file that was removed is recreated
 adding a
 adding a
 changeset 2:44cd84c7349a backs out changeset 1:76862dcce372
 content
 # backout of backout is as if nothing happened
 removing a
 changeset 3:0dd8a0ed5e99 backs out changeset 2:44cd84c7349a
 cat: a: No such file or directory
 # backout with merge
 adding a
 reverting a
 changeset 3:6c77ecc28460 backs out changeset 1:314f55b1bf23
 merging with changeset 2:b66ea5b77abb
 merging a
 0 files updated, 1 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 line 1
 # backout should not back out subsequent changesets
 adding a
 adding b
 reverting a
 changeset 3:4cbb1e70196a backs out changeset 1:22bca4c721e5
 the backout changeset is a new head - do not forget to merge
 (use "backout -m" if you want to auto-merge)
 b: No such file or directory
+adding a
+adding b
+adding c
+0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+adding d
+1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+(branch merge, don't forget to commit)
+# backout of merge should fail
+abort: cannot back out a merge changeset without --parent
+# backout of merge with bad parent should fail
+abort: cb9a9f314b8b is not a parent of b2f3bb92043e
+# backout of non-merge with parent should fail
+abort: cannot use --parent on non-merge changeset
+# backout with valid parent should be ok
+removing d
+changeset 5:11fbd9be634c backs out changeset 4:b2f3bb92043e
+rolling back last transaction
+1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+removing c
+changeset 5:1a5f1a63bf2c backs out changeset 4:b2f3bb92043e

tests/test-http

@@ -1,25 +1,25 b''
 #!/bin/sh
 
-mkdir test
+hg init test
 cd test
 echo foo>foo
-hg init
-hg addremove
-hg commit -m 1
-hg verify
-hg serve -p 20059 -d --pid-file=hg.pid
-cat hg.pid >> $DAEMON_PIDS
+hg commit -A -d '0 0' -m 1
+hg --config server.uncompressed=True serve -p 20059 -d --pid-file=hg1.pid
+cat hg1.pid >> $DAEMON_PIDS
+hg serve -p 20060 -d --pid-file=hg2.pid
+cat hg2.pid >> $DAEMON_PIDS
 cd ..
 
 echo % clone via stream
-http_proxy= hg clone --stream http://localhost:20059/ copy 2>&1 | \
+http_proxy= hg clone --uncompressed http://localhost:20059/ copy 2>&1 | \
   sed -e 's/[0-9][0-9.]*/XXX/g'
 cd copy
 hg verify
 
-cd ..
+echo % try to clone via stream, should use pull instead
+http_proxy= hg clone --uncompressed http://localhost:20060/ copy2
 
 echo % clone via pull
 http_proxy= hg clone http://localhost:20059/ copy-pull
 cd copy-pull
 hg verify

tests/test-http-proxy

@@ -1,41 +1,41 b''
 #!/bin/sh
 
 hg init a
 cd a
 echo a > a
 hg ci -Ama -d '1123456789 0'
-hg serve -p 20059 -d --pid-file=hg.pid
+hg --config server.uncompressed=True serve -p 20059 -d --pid-file=hg.pid
 cat hg.pid >> $DAEMON_PIDS
 
 cd ..
 ("$TESTDIR/tinyproxy.py" 20060 localhost >proxy.log 2>&1 </dev/null &
 echo $! > proxy.pid)
 cat proxy.pid >> $DAEMON_PIDS
 sleep 2
 
 echo %% url for proxy, stream
-http_proxy=http://localhost:20060/ hg --config http_proxy.always=True clone --stream http://localhost:20059/ b | \
+http_proxy=http://localhost:20060/ hg --config http_proxy.always=True clone --uncompressed http://localhost:20059/ b | \
   sed -e 's/[0-9][0-9.]*/XXX/g'
 cd b
 hg verify
 cd ..
 
 echo %% url for proxy, pull
 http_proxy=http://localhost:20060/ hg --config http_proxy.always=True clone http://localhost:20059/ b-pull
 cd b-pull
 hg verify
 cd ..
 
 echo %% host:port for proxy
 http_proxy=localhost:20060 hg clone --config http_proxy.always=True http://localhost:20059/ c
 
 echo %% proxy url with user name and password
 http_proxy=http://user:passwd@localhost:20060 hg clone --config http_proxy.always=True http://localhost:20059/ d
 
 echo %% url with user name and password
 http_proxy=http://user:passwd@localhost:20060 hg clone --config http_proxy.always=True http://user:passwd@localhost:20059/ e
 
 echo %% bad host:port for proxy
 http_proxy=localhost:20061 hg clone --config http_proxy.always=True http://localhost:20059/ f
 
 exit 0

tests/test-http.out

@@ -1,29 +1,30 b''
-(the addremove command is deprecated; use add and remove --after instead)
 adding foo
-checking changesets
-checking manifests
-crosschecking files in changesets and manifests
-checking files
-1 files, 1 changesets, 1 total revisions
 % clone via stream
 streaming all changes
 XXX files to transfer, XXX bytes of data
 transferred XXX bytes in XXX seconds (XXX KB/sec)
 XXX files updated, XXX files merged, XXX files removed, XXX files unresolved
 checking changesets
 checking manifests
 crosschecking files in changesets and manifests
 checking files
 1 files, 1 changesets, 1 total revisions
+% try to clone via stream, should use pull instead
+requesting all changes
+adding changesets
+adding manifests
+adding file changes
+added 1 changesets with 1 changes to 1 files
+1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 % clone via pull
 requesting all changes
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 checking changesets
 checking manifests
 crosschecking files in changesets and manifests
 checking files
 1 files, 1 changesets, 1 total revisions

tests/test-ssh

@@ -1,90 +1,92 b''
 #!/bin/sh
 
 # This test tries to exercise the ssh functionality with a dummy script
 
 cat <<'EOF' > dummyssh
 #!/bin/sh
 # this attempts to deal with relative pathnames
 cd `dirname $0`
 
 # check for proper args
 if [ $1 != "user@dummy" ] ; then
 	exit -1
 fi
 
 # check that we're in the right directory
 if [ ! -x dummyssh ] ; then
 	exit -1
 fi
 
 echo Got arguments 1:$1 2:$2 3:$3 4:$4 5:$5 >> dummylog
 $2
 EOF
 chmod +x dummyssh
 
 echo "# creating 'remote'"
 hg init remote
 cd remote
 echo this > foo
 hg ci -A -m "init" -d "1000000 0" foo
+echo '[server]' > .hg/hgrc
+echo 'uncompressed = True' >> .hg/hgrc
 
 cd ..
 
 echo "# clone remote via stream"
-hg clone -e ./dummyssh --stream ssh://user@dummy/remote local-stream 2>&1 | \
+hg clone -e ./dummyssh --uncompressed ssh://user@dummy/remote local-stream 2>&1 | \
   sed -e 's/[0-9][0-9.]*/XXX/g'
 cd local-stream
 hg verify
 cd ..
 
 echo "# clone remote via pull"
 hg clone -e ./dummyssh ssh://user@dummy/remote local
 
 echo "# verify"
 cd local
 hg verify
 
 echo "# empty default pull"
 hg paths
 hg pull -e ../dummyssh
 
 echo "# local change"
 echo bleah > foo
 hg ci -m "add" -d "1000000 0"
 
 echo "# updating rc"
 echo "default-push = ssh://user@dummy/remote" >> .hg/hgrc
 echo "[ui]" >> .hg/hgrc
 echo "ssh = ../dummyssh" >> .hg/hgrc
 
 echo "# find outgoing"
 hg out ssh://user@dummy/remote
 
 echo "# find incoming on the remote side"
 hg incoming -R ../remote -e ../dummyssh ssh://user@dummy/local
 
 echo "# push"
 hg push
 
 cd ../remote
 
 echo "# check remote tip"
 hg tip
 hg verify
 hg cat foo
 
 echo z > z
 hg ci -A -m z -d '1000001 0' z
 
 cd ../local
 echo r > r
 hg ci -A -m z -d '1000002 0' r
 
 echo "# push should fail"
 hg push
 
 echo "# push should succeed"
 hg push -f
 
 cd ..
 cat dummylog