/brz/remove-bazaar

# Copyright (C) 2019 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

"""Fossil foreign branch support.

Currently only tells the user that Fossil is not supported.

"""

from __future__ import absolute_import

from ... import version_info  # noqa: F401

from ... import (

    controldir,

    errors,

    )

class FossilUnsupportedError(errors.UnsupportedFormatError):

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

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

            'use fastimport.')

class FossilDirFormat(controldir.ControlDirFormat):

    """Fossil directory format."""

    def get_converter(self):

        raise NotImplementedError(self.get_converter)

    def get_format_description(self):

        return "Fossil 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

    def check_support_status(self, allow_unsupported, recommend_upgrade=True,

                             basedir=None):

        raise FossilUnsupportedError()

    def open(self, transport):

        # Raise NotBranchError if there is nothing there

        RemoteFossilProber().probe_transport(transport)

        raise NotImplementedError(self.open)

class RemoteFossilProber(controldir.Prober):

    @classmethod

    def priority(klass, transport):

        return 95

    @classmethod

    def probe_transport(klass, transport):

        from breezy.transport.http import HttpTransport

        if not isinstance(transport, HttpTransport):

            raise errors.NotBranchError(path=transport.base)

        response = transport.request(

            'POST', transport.base, headers={'Content-Type': 'application/x-fossil'})

        if response.status == 501:

            raise errors.NotBranchError(path=transport.base)

        ct = response.getheader('Content-Type')

        if ct is None:

            raise errors.NotBranchError(path=transport.base)

        if ct.split(';')[0] != 'application/x-fossil':

            raise errors.NotBranchError(path=transport.base)

        return FossilDirFormat()

    @classmethod

    def known_formats(cls):

        return [FossilDirFormat()]

controldir.ControlDirFormat.register_prober(RemoteFossilProber)