/brz/remove-bazaar

# Copyright (C) 2010 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; version 3 of the License or 

# (at your option) a 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

"""Darcs foreign branch support.

Currently only tells the user to use fastimport/fastexport.

"""

from __future__ import absolute_import

from breezy import (

    controldir,

    errors,

    )

class DarcsUnsupportedError(errors.UnsupportedFormatError):

    _fmt = ('Darcs branches are not yet supported. '

            'To convert darcs branches to Bazaar branches or vice versa, '

            'use bzr-fastimport. See http://bazaar-vcs.org/BzrMigration.')

class DarcsDirFormat(controldir.ControlDirFormat):

    """Darcs directory format."""

    def get_converter(self):

        raise NotImplementedError(self.get_converter)

    def get_format_description(self):

        return "darcs control directory"

    def initialize_on_transport(self, transport):

        raise errors.UninitializableFormat(self)

    def is_supported(self):

        return False

    def supports_transport(self, transport):

        return False

    @classmethod

    def _known_formats(self):

        return set([DarcsDirFormat()])

    def open(self, transport, _found=False):

        """Open this directory."""

        raise DarcsUnsupportedError(self)

    def check_support_status(self, allow_unsupported, recommend_upgrade=True,

                             basedir=None):

        raise DarcsUnsupportedError(self)

    def open(self, transport):

        # Raise NotBranchError if there is nothing there

        DarcsProber().probe_transport(transport)

        raise NotImplementedError(self.open)

class DarcsProber(controldir.Prober):

    @classmethod

    def probe_transport(klass, transport):

        if transport.has('_darcs'):

            return DarcsDirFormat()

        raise errors.NotBranchError(path=transport.base)

    @classmethod

    def known_formats(cls):

        return [DarcsDirFormat()]

controldir.ControlDirFormat.register_prober(DarcsProber)