def __init__(self, ui, path, path2):
        localrepo.localrepository.__init__(self, ui, path)
        self.ui.setconfig('phases', 'publish', False)

        self._url = 'union:%s+%s' % (util.expandpath(path),
                                     util.expandpath(path2))
        self.repo2 = localrepo.localrepository(ui, path2)

    def readauthtoken(self, uri):
        # Read configuration
        config = dict()
        for key, val in self.ui.configitems('auth'):
            if '.' not in key:
                self.ui.warn(_("ignoring invalid [auth] key '%s'\n") % key)
                continue
            group, setting = key.split('.', 1)
            gdict = config.setdefault(group, dict())
            if setting in ('cert', 'key'):
                val = util.expandpath(val)
            gdict[setting] = val

        # Find the best match
        scheme, hostpath = uri.split('://', 1)
        bestlen = 0
        bestauth = None
        for auth in config.itervalues():
            prefix = auth.get('prefix')
            if not prefix:
                continue
            p = prefix.split('://', 1)
            if len(p) > 1:
                schemes, prefix = [p[0]], p[1]
            else:
                schemes = (auth.get('schemes') or 'https').split()
            if (prefix == '*' or hostpath.startswith(prefix)) and \
                len(prefix) > bestlen and scheme in schemes:
                bestlen = len(prefix)
                bestauth = auth
        return bestauth

def remoteui(src, opts):
    'build a remote ui from ui or repo and opts'
    if util.safehasattr(src, 'baseui'): # looks like a repository
        dst = src.baseui.copy() # drop repo-specific config
        src = src.ui # copy target options from repo
    else: # assume it's a global ui object
        dst = src.copy() # keep all global options

    # copy ssh-specific options
    for o in 'ssh', 'remotecmd':
        v = opts.get(o) or src.config('ui', o)
        if v:
            dst.setconfig("ui", o, v)

    # copy bundle-specific options
    r = src.config('bundle', 'mainreporoot')
    if r:
        dst.setconfig('bundle', 'mainreporoot', r)

    # copy selected local settings to the remote ui
    for sect in ('auth', 'hostfingerprints', 'http_proxy'):
        for key, val in src.configitems(sect):
            dst.setconfig(sect, key, val)
    v = src.config('web', 'cacerts')
    if v:
        dst.setconfig('web', 'cacerts', util.expandpath(v))

    return dst

def remoteui(src, opts):
    "build a remote ui from ui or repo and opts"
    if util.safehasattr(src, "baseui"):  # looks like a repository
        dst = src.baseui.copy()  # drop repo-specific config
        src = src.ui  # copy target options from repo
    else:  # assume it's a global ui object
        dst = src.copy()  # keep all global options

    # copy ssh-specific options
    for o in "ssh", "remotecmd":
        v = opts.get(o) or src.config("ui", o)
        if v:
            dst.setconfig("ui", o, v, "copied")

    # copy bundle-specific options
    r = src.config("bundle", "mainreporoot")
    if r:
        dst.setconfig("bundle", "mainreporoot", r, "copied")

    # copy selected local settings to the remote ui
    for sect in ("auth", "hostfingerprints", "http_proxy"):
        for key, val in src.configitems(sect):
            dst.setconfig(sect, key, val, "copied")
    v = src.config("web", "cacerts")
    if v:
        dst.setconfig("web", "cacerts", util.expandpath(v), "copied")

    return dst

    def fixconfig(self, root=None, section=None):
        if section in (None, "paths"):
            # expand vars and ~
            # translate paths relative to root (or home) into absolute paths
            root = root or os.getcwd()
            for c in self._tcfg, self._ucfg, self._ocfg:
                for n, p in c.items("paths"):
                    if not p:
                        continue
                    if "%%" in p:
                        self.warn(
                            _("(deprecated '%%' in path %s=%s from %s)\n") % (n, p, self.configsource("paths", n))
                        )
                        p = p.replace("%%", "%")
                    p = util.expandpath(p)
                    if "://" not in p and not os.path.isabs(p):
                        p = os.path.normpath(os.path.join(root, p))
                    c.set("paths", n, p)

        if section in (None, "ui"):
            # update ui options
            self.debugflag = self.configbool("ui", "debug")
            self.verbose = self.debugflag or self.configbool("ui", "verbose")
            self.quiet = not self.debugflag and self.configbool("ui", "quiet")
            if self.verbose and self.quiet:
                self.quiet = self.verbose = False
            self._reportuntrusted = self.configbool("ui", "report_untrusted", True)
            self.tracebackflag = self.configbool("ui", "traceback", False)

        if section in (None, "trusted"):
            # update trust information
            self._trustusers.update(self.configlist("trusted", "users"))
            self._trustgroups.update(self.configlist("trusted", "groups"))

    def fixconfig(self, root=None, section=None):
        if section in (None, 'paths'):
            # expand vars and ~
            # translate paths relative to root (or home) into absolute paths
            root = root or os.getcwd()
            for c in self._tcfg, self._ucfg, self._ocfg:
                for n, p in c.items('paths'):
                    if not p:
                        continue
                    if '%%' in p:
                        self.warn(_("(deprecated '%%' in path %s=%s from %s)\n")
                                  % (n, p, self.configsource('paths', n)))
                        p = p.replace('%%', '%')
                    p = util.expandpath(p)
                    if not util.hasscheme(p) and not os.path.isabs(p):
                        p = os.path.normpath(os.path.join(root, p))
                    c.set("paths", n, p)

        if section in (None, 'ui'):
            # update ui options
            self.debugflag = self.configbool('ui', 'debug')
            self.verbose = self.debugflag or self.configbool('ui', 'verbose')
            self.quiet = not self.debugflag and self.configbool('ui', 'quiet')
            if self.verbose and self.quiet:
                self.quiet = self.verbose = False
            self._reportuntrusted = self.debugflag or self.configbool("ui",
                "report_untrusted", True)
            self.tracebackflag = self.configbool('ui', 'traceback', False)

        if section in (None, 'trusted'):
            # update trust information
            self._trustusers.update(self.configlist('trusted', 'users'))
            self._trustgroups.update(self.configlist('trusted', 'groups'))

 def _ignore(self):
     files = [self._join('.hgignore')]
     for name, path in self._ui.configitems("ui"):
         if name == 'ignore' or name.startswith('ignore.'):
             # we need to use os.path.join here rather than self._join
             # because path is arbitrary and user-specified
             files.append(os.path.join(self._rootdir, util.expandpath(path)))
     return ignore.ignore(self._root, files, self._ui.warn)

 def __init__(self, base, audit=True, expandpath=False, realpath=False):
     if expandpath:
         base = util.expandpath(base)
     if realpath:
         base = os.path.realpath(base)
     self.base = base
     self._setmustaudit(audit)
     self.createmode = None
     self._trustnlink = None

 def _path(self, loc):
     p = self.config('paths', loc)
     if p:
         if '%%' in p:
             self.warn("(deprecated '%%' in path %s=%s from %s)\n" %
                       (loc, p, self.configsource('paths', loc)))
             p = p.replace('%%', '%')
         p = util.expandpath(p)
     return p

def loadpath(path, module_name):
    module_name = module_name.replace(".", "_")
    path = util.expandpath(path)
    if os.path.isdir(path):
        # module/__init__.py style
        d, f = os.path.split(path.rstrip("/"))
        fd, fpath, desc = imp.find_module(f, [d])
        return imp.load_module(module_name, fd, fpath, desc)
    else:
        return imp.load_source(module_name, path)

def hook(ui, repo, name, throw=False, **args):
    if not ui.callhooks:
        return False

    r = False
    oldstdout = -1

    try:
        for hname, cmd in _allhooks(ui):
            if hname.split('.')[0] != name or not cmd:
                continue

            if oldstdout == -1 and _redirect:
                try:
                    stdoutno = sys.__stdout__.fileno()
                    stderrno = sys.__stderr__.fileno()
                    # temporarily redirect stdout to stderr, if possible
                    if stdoutno >= 0 and stderrno >= 0:
                        sys.__stdout__.flush()
                        oldstdout = os.dup(stdoutno)
                        os.dup2(stderrno, stdoutno)
                except (OSError, AttributeError):
                    # files seem to be bogus, give up on redirecting (WSGI, etc)
                    pass

            if callable(cmd):
                r = _pythonhook(ui, repo, name, hname, cmd, args, throw) or r
            elif cmd.startswith('python:'):
                if cmd.count(':') >= 2:
                    path, cmd = cmd[7:].rsplit(':', 1)
                    path = util.expandpath(path)
                    if repo:
                        path = os.path.join(repo.root, path)
                    try:
                        mod = extensions.loadpath(path, 'hghook.%s' % hname)
                    except Exception:
                        ui.write(_("loading %s hook failed:\n") % hname)
                        raise
                    hookfn = getattr(mod, cmd)
                else:
                    hookfn = cmd[7:].strip()
                r = _pythonhook(ui, repo, name, hname, hookfn, args, throw) or r
            else:
                r = _exthook(ui, repo, hname, cmd, args, throw) or r

            # The stderr is fully buffered on Windows when connected to a pipe.
            # A forcible flush is required to make small stderr data in the
            # remote side available to the client immediately.
            sys.stderr.flush()
    finally:
        if _redirect and oldstdout >= 0:
            os.dup2(oldstdout, stdoutno)
            os.close(oldstdout)

    return r

    def __init__(self, ui, path, bundlename):
        self._tempparent = None
        try:
            localrepo.localrepository.__init__(self, ui, path)
        except error.RepoError:
            self._tempparent = tempfile.mkdtemp()
            localrepo.instance(ui, self._tempparent, 1)
            localrepo.localrepository.__init__(self, ui, self._tempparent)

        if path:
            self._url = 'bundle:' + util.expandpath(path) + '+' + bundlename
        else:
            self._url = 'bundle:' + bundlename

        self.tempfile = None
        self.bundlefile = open(bundlename, "rb")
        header = self.bundlefile.read(6)
        if not header.startswith("HG"):
            raise util.Abort(_("%s: not a Mercurial bundle file") % bundlename)
        elif not header.startswith("HG10"):
            raise util.Abort(_("%s: unknown bundle version") % bundlename)
        elif (header == "HG10BZ") or (header == "HG10GZ"):
            fdtemp, temp = tempfile.mkstemp(prefix="hg-bundle-",
                                            suffix=".hg10un", dir=self.path)
            self.tempfile = temp
            fptemp = os.fdopen(fdtemp, 'wb')
            def generator(f):
                if header == "HG10BZ":
                    zd = bz2.BZ2Decompressor()
                    zd.decompress("BZ")
                elif header == "HG10GZ":
                    zd = zlib.decompressobj()
                for chunk in f:
                    yield zd.decompress(chunk)
            gen = generator(util.filechunkiter(self.bundlefile, 4096))

            try:
                fptemp.write("HG10UN")
                for chunk in gen:
                    fptemp.write(chunk)
            finally:
                fptemp.close()
                self.bundlefile.close()

            self.bundlefile = open(self.tempfile, "rb")
            # seek right after the header
            self.bundlefile.seek(6)
        elif header == "HG10UN":
            # nothing to do
            pass
        else:
            raise util.Abort(_("%s: unknown bundle compression type")
                             % bundlename)
        # dict with the mapping 'filename' -> position in the bundle
        self.bundlefilespos = {}

        def connect(self):
            self.sock = _create_connection((self.host, self.port))

            host = self.host
            if self.realhostport: # use CONNECT proxy
                something = _generic_proxytunnel(self)
                host = self.realhostport.rsplit(':', 1)[0]

            cacerts = self.ui.config('web', 'cacerts')
            hostfingerprint = self.ui.config('hostfingerprints', host)

            if cacerts and not hostfingerprint:
                cacerts = util.expandpath(cacerts)
                if not os.path.exists(cacerts):
                    raise util.Abort(_('could not find '
                                       'web.cacerts: %s') % cacerts)
                self.sock = _ssl_wrap_socket(self.sock, self.key_file,
                    self.cert_file, cert_reqs=CERT_REQUIRED,
                    ca_certs=cacerts)
                msg = _verifycert(self.sock.getpeercert(), host)
                if msg:
                    raise util.Abort(_('%s certificate error: %s '
                                       '(use --insecure to connect '
                                       'insecurely)') % (host, msg))
                self.ui.debug('%s certificate successfully verified\n' % host)
            else:
                self.sock = _ssl_wrap_socket(self.sock, self.key_file,
                    self.cert_file)
                if hasattr(self.sock, 'getpeercert'):
                    peercert = self.sock.getpeercert(True)
                    peerfingerprint = util.sha1(peercert).hexdigest()
                    nicefingerprint = ":".join([peerfingerprint[x:x + 2]
                        for x in xrange(0, len(peerfingerprint), 2)])
                    if hostfingerprint:
                        if peerfingerprint.lower() != \
                                hostfingerprint.replace(':', '').lower():
                            raise util.Abort(_('invalid certificate for %s '
                                               'with fingerprint %s') %
                                             (host, nicefingerprint))
                        self.ui.debug('%s certificate matched fingerprint %s\n' %
                                      (host, nicefingerprint))
                    else:
                        self.ui.warn(_('warning: %s certificate '
                                       'with fingerprint %s not verified '
                                       '(check hostfingerprints or web.cacerts '
                                       'config setting)\n') %
                                     (host, nicefingerprint))
                else: # python 2.5 ?
                    if hostfingerprint:
                        raise util.Abort(_('no certificate for %s with '
                                           'configured hostfingerprint') % host)
                    self.ui.warn(_('warning: %s certificate not verified '
                                   '(check web.cacerts config setting)\n') %
                                 host)

def findexternaltool(ui, tool):
    for kn in ("regkey", "regkeyalt"):
        k = _toolstr(ui, tool, kn)
        if not k:
            continue
        p = util.lookupreg(k, _toolstr(ui, tool, "regname"))
        if p:
            p = util.findexe(p + _toolstr(ui, tool, "regappend"))
            if p:
                return p
    exe = _toolstr(ui, tool, "executable", tool)
    return util.findexe(util.expandpath(exe))

def hook(ui, repo, name, throw=False, **args):
    if not ui.callhooks:
        return False

    r = False
    oldstdout = -1

    try:
        for hname, cmd in _allhooks(ui):
            if hname.split('.')[0] != name or not cmd:
                continue

            if oldstdout == -1 and _redirect:
                try:
                    stdoutno = sys.__stdout__.fileno()
                    stderrno = sys.__stderr__.fileno()
                    # temporarily redirect stdout to stderr, if possible
                    if stdoutno >= 0 and stderrno >= 0:
                        sys.__stdout__.flush()
                        oldstdout = os.dup(stdoutno)
                        os.dup2(stderrno, stdoutno)
                except (OSError, AttributeError):
                    # files seem to be bogus, give up on redirecting (WSGI, etc)
                    pass

            if util.safehasattr(cmd, '__call__'):
                r = _pythonhook(ui, repo, name, hname, cmd, args, throw) or r
            elif cmd.startswith('python:'):
                if cmd.count(':') >= 2:
                    path, cmd = cmd[7:].rsplit(':', 1)
                    path = util.expandpath(path)
                    if repo:
                        path = os.path.join(repo.root, path)
                    try:
                        mod = extensions.loadpath(path, 'hghook.%s' % hname)
                    except Exception:
                        ui.write(_("loading %s hook failed:\n") % hname)
                        raise
                    hookfn = getattr(mod, cmd)
                else:
                    hookfn = cmd[7:].strip()
                r = _pythonhook(ui, repo, name, hname, hookfn, args, throw) or r
            else:
                r = _exthook(ui, repo, hname, cmd, args, throw) or r
    finally:
        if _redirect and oldstdout >= 0:
            os.dup2(oldstdout, stdoutno)
            os.close(oldstdout)

    return r

        def connect(self):
            if hasattr(self, 'ui'):
                cacerts = self.ui.config('web', 'cacerts')
                if cacerts:
                    cacerts = util.expandpath(cacerts)
            else:
                cacerts = None

            hostfingerprint = self.ui.config('hostfingerprints', self.host)
            if cacerts and not hostfingerprint:
                sock = _create_connection((self.host, self.port))
                self.sock = _ssl_wrap_socket(sock, self.key_file,
                        self.cert_file, cert_reqs=CERT_REQUIRED,
                        ca_certs=cacerts)
                msg = _verifycert(self.sock.getpeercert(), self.host)
                if msg:
                    raise util.Abort(_('%s certificate error: %s '
                                       '(use --insecure to connect '
                                       'insecurely)') % (self.host, msg))
                self.ui.debug('%s certificate successfully verified\n' %
                              self.host)
            else:
                httplib.HTTPSConnection.connect(self)
                if hasattr(self.sock, 'getpeercert'):
                    peercert = self.sock.getpeercert(True)
                    peerfingerprint = util.sha1(peercert).hexdigest()
                    nicefingerprint = ":".join([peerfingerprint[x:x + 2]
                        for x in xrange(0, len(peerfingerprint), 2)])
                    if hostfingerprint:
                        if peerfingerprint.lower() != \
                                hostfingerprint.replace(':', '').lower():
                            raise util.Abort(_('invalid certificate for %s '
                                               'with fingerprint %s') %
                                             (self.host, nicefingerprint))
                        self.ui.debug('%s certificate matched fingerprint %s\n' %
                                      (self.host, nicefingerprint))
                    else:
                        self.ui.warn(_('warning: %s certificate '
                                       'with fingerprint %s not verified '
                                       '(check hostfingerprints or web.cacerts '
                                       'config setting)\n') %
                                     (self.host, nicefingerprint))
                else: # python 2.5 ?
                    if hostfingerprint:
                        raise util.Abort(_('no certificate for %s '
                                           'with fingerprint') % self.host)
                    self.ui.warn(_('warning: %s certificate not verified '
                                   '(check web.cacerts config setting)\n') %
                                 self.host)

def loadpath(path, module_name):
    module_name = module_name.replace('.', '_')
    path = util.expandpath(path)
    if os.path.isdir(path):
        # module/__init__.py style
        d, f = os.path.split(path.rstrip('/'))
        fd, fpath, desc = imp.find_module(f, [d])
        return imp.load_module(module_name, fd, fpath, desc)
    else:
        try:
            return imp.load_source(module_name, path)
        except IOError, exc:
            if not exc.filename:
                exc.filename = path # python does not fill this
            raise

    def _ignore(self):
        files = []
        if os.path.exists(self._join('.hgignore')):
            files.append(self._join('.hgignore'))
        for name, path in self._ui.configitems("ui"):
            if name == 'ignore' or name.startswith('ignore.'):
                # we need to use os.path.join here rather than self._join
                # because path is arbitrary and user-specified
                files.append(os.path.join(self._rootdir, util.expandpath(path)))

        if not files:
            return util.never

        pats = ['include:%s' % f for f in files]
        return matchmod.match(self._root, '', [], pats, warn=self._ui.warn)

def show_changeset(ui, repo, opts, buffered=False):
    """show one changeset using template or regular display.

    Display format will be the first non-empty hit of:
    1. option 'template'
    2. option 'style'
    3. [ui] setting 'logtemplate'
    4. [ui] setting 'style'
    If all of these values are either the unset or the empty string,
    regular display via changeset_printer() is done.
    """
    # options
    patch = False
    if opts.get('patch') or opts.get('stat'):
        patch = matchall(repo)

    tmpl = opts.get('template')
    style = None
    if tmpl:
        tmpl = templater.parsestring(tmpl, quoted=False)
    else:
        style = opts.get('style')

    # ui settings
    if not (tmpl or style):
        tmpl = ui.config('ui', 'logtemplate')
        if tmpl:
            tmpl = templater.parsestring(tmpl)
        else:
            style = util.expandpath(ui.config('ui', 'style', ''))

    if not (tmpl or style):
        return changeset_printer(ui, repo, patch, opts, buffered)

    mapfile = None
    if style and not tmpl:
        mapfile = style
        if not os.path.split(mapfile)[0]:
            mapname = (templater.templatepath('map-cmdline.' + mapfile)
                       or templater.templatepath(mapfile))
            if mapname:
                mapfile = mapname

    try:
        t = changeset_templater(ui, repo, patch, opts, mapfile, buffered)
    except SyntaxError, inst:
        raise util.Abort(inst.args[0])

def hook(ui, repo, name, throw=False, **args):
    if not ui.callhooks:
        return False

    r = False

    oldstdout = -1
    if _redirect:
        try:
            stdoutno = sys.__stdout__.fileno()
            stderrno = sys.__stderr__.fileno()
            # temporarily redirect stdout to stderr, if possible
            if stdoutno >= 0 and stderrno >= 0:
                sys.__stdout__.flush()
                oldstdout = os.dup(stdoutno)
                os.dup2(stderrno, stdoutno)
        except AttributeError:
            # __stdout/err__ doesn't have fileno(), it's not a real file
            pass

    try:
        for hname, cmd in _allhooks(ui):
            if hname.split('.')[0] != name or not cmd:
                continue
            if util.safehasattr(cmd, '__call__'):
                r = _pythonhook(ui, repo, name, hname, cmd, args, throw) or r
            elif cmd.startswith('python:'):
                if cmd.count(':') >= 2:
                    path, cmd = cmd[7:].rsplit(':', 1)
                    path = util.expandpath(path)
                    if repo:
                        path = os.path.join(repo.root, path)
                    mod = extensions.loadpath(path, 'hghook.%s' % hname)
                    hookfn = getattr(mod, cmd)
                else:
                    hookfn = cmd[7:].strip()
                r = _pythonhook(ui, repo, name, hname, hookfn, args, throw) or r
            else:
                r = _exthook(ui, repo, hname, cmd, args, throw) or r
    finally:
        if _redirect and oldstdout >= 0:
            os.dup2(oldstdout, stdoutno)
            os.close(oldstdout)

    return r