/brz/remove-bazaar

# Copyright (C) 2008 Jelmer Vernooij <jelmer@samba.org>

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""Foreign branch utilities."""

from bzrlib import registry

class VcsMapping(object):

    """Describes the mapping between the semantics of Bazaar and a foreign vcs.

    """

    experimental = False

    roundtripping = False

    revid_prefix = None

class VcsMappingRegistry(registry.Registry):

    """Registry for Bazaar<->foreign VCS mappings.

    There should be one instance of this registry for every foreign VCS.

    """

    def register(self, key, factory, help):

        """Register a mapping between Bazaar and foreign VCS semantics.

        The factory must be a callable that takes one parameter: the key.

        It must produce an instance of VcsMapping when called.

        """

        registry.Registry.register(self, key, factory, help)

    def set_default(self, key):

        """Set the 'default' key to be a clone of the supplied key.

        This method must be called once and only once.

        """

        self._set_default_key(key)

    def get_default(self):

        """Convenience function for obtaining the default mapping to use."""

        return self.get(self._get_default_key())