/brz/remove-bazaar

# Copyright (C) 2007 Canonical Ltd

#

# 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

"""An adapter between a Git Branch and a Bazaar Branch"""

from bzrlib import (

    branch,

    config,

    revision,

    tag,

    )

from bzrlib.decorators import needs_read_lock

from bzrlib.plugins.git.foreign import ForeignBranch

from bzrlib.plugins.git.mapping import default_mapping

class GitTagDict(tag.BasicTags):

    def __init__(self, branch):

        self.branch = branch

        self.repository = branch.repository

    def get_tag_dict(self):

        ret = {}

        for tag in self.repository._git.tags:

            ret[tag.name] = self.branch.mapping.revision_id_foreign_to_bzr(tag.ref)

        return ret

    def set_tag(self, name, revid):

        raise NotImplementedError(self.set_tag)

class GitBranchConfig(config.BranchConfig):

    """BranchConfig that uses locations.conf in place of branch.conf"""

    def __init__(self, branch):

        config.BranchConfig.__init__(self, branch)

        # do not provide a BranchDataConfig

        self.option_sources = self.option_sources[0], self.option_sources[2]

    def set_user_option(self, name, value, local=False):

        """Force local to True"""

        config.BranchConfig.set_user_option(self, name, value, local=True)

class GitBranchFormat(branch.BranchFormat):

    def get_format_description(self):

        return 'Git Branch'

    def supports_tags(self):

        return True

class GitBranch(ForeignBranch):

    """An adapter to git repositories for bzr Branch objects."""

    def __init__(self, bzrdir, repository, head, base, lockfiles):

        self.repository = repository

        super(GitBranch, self).__init__(default_mapping)

        self.control_files = lockfiles

        self.bzrdir = bzrdir

        self.head = head

        self.base = base

        self._format = GitBranchFormat()

    def lock_write(self):

        self.control_files.lock_write()

    @needs_read_lock

    def last_revision(self):

        # perhaps should escape this ?

        if self.head is None:

            return revision.NULL_REVISION

        return self.mapping.revision_id_foreign_to_bzr(self.head)

    def _make_tags(self):

        return GitTagDict(self)

    def get_parent(self):

        """See Branch.get_parent()."""

        return None

    def get_stacked_on_url(self):

        return None

    def _gen_revision_history(self):

        if self.head is None:

            return []

        skip = 0

        cms = None

        ret = []

        max_count = 1000

        nextid = self.head

        while cms != []:

            cms = self.repository._git.commits(self.head, max_count=max_count, skip=skip)

            skip += max_count

            for cm in cms:

                if cm.id == nextid:

                    ret.append(self.mapping.revision_id_foreign_to_bzr(cm.id))

                    if cm.parents == []:

                        nextid = None

                    else:

                        nextid = cm.parents[0].id

        ret.reverse()

        return ret

    def get_config(self):

        return GitBranchConfig(self)

    def lock_read(self):

        self.control_files.lock_read()

    def unlock(self):

        self.control_files.unlock()

    def get_physical_lock_status(self):

        return False

    def get_push_location(self):

        """See Branch.get_push_location."""

        push_loc = self.get_config().get_user_option('push_location')

        return push_loc

    def set_push_location(self, location):

        """See Branch.set_push_location."""

        self.get_config().set_user_option('push_location', location,

                                          local=True)

    def supports_tags(self):

        return True

    def sprout(self, to_bzrdir, revision_id=None):

        """See Branch.sprout()."""

        result = to_bzrdir.create_branch()

        self.copy_content_into(result, revision_id=revision_id)

        result.set_parent(self.bzrdir.root_transport.base)

        return result