/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

"""An adapter between a Git index and a Bazaar Working Tree"""

from dulwich.index import (

    Index,

    )

import os

from bzrlib import (

    inventory,

    lockable_files,

    lockdir,

    osutils,

    transport,

    urlutils,

    workingtree,

    )

from bzrlib.decorators import (

    needs_read_lock,

    needs_write_lock,

    )

def inventory_from_index(basis_inventory, index):

    inventory = basis_inventory.copy()

    return inventory

class GitWorkingTree(workingtree.WorkingTree):

    """A Git working tree."""

    def __init__(self, bzrdir, repo, branch):

        self.basedir = bzrdir.root_transport.local_abspath('.')

        self.bzrdir = bzrdir

        self.repository = repo

        self._branch = branch

        self._transport = bzrdir.transport

        self.controldir = urlutils.join(self.repository._git._controldir, 'bzr')

        try:

            os.makedirs(self.controldir)

            os.makedirs(os.path.join(self.controldir, 'lock'))

        except OSError:

            pass

        self._control_files = lockable_files.LockableFiles(

            transport.get_transport(self.controldir), 'lock', lockdir.LockDir)

        self._format = GitWorkingTreeFormat()

        self.index = Index(os.path.join(self.repository._git.controldir(), 

            "index"))

        self.views = self._make_views()

        self._detect_case_handling()

    def unlock(self):

        # non-implementation specific cleanup

        self._cleanup()

        # reverse order of locking.

        try:

            return self._control_files.unlock()

        finally:

            self.branch.unlock()

    def is_control_filename(self, path):

        return os.path.basename(path) == ".git"

    def _reset_data(self):

        self._inventory_is_modified = False

        basis_inv = self.repository.get_inventory(self.repository.get_mapping().revision_id_foreign_to_bzr(self.repository._git.head()))

        result = inventory_from_index(basis_inv, self.index)

        self._set_inventory(result, dirty=False)

    @needs_read_lock

    def get_file_sha1(self, file_id, path=None, stat_value=None):

        if not path:

            path = self._inventory.id2path(file_id)

        return osutils.fingerprint_file(open(self.abspath(path).encode(osutils._fs_enc)))['sha1']

class GitWorkingTreeFormat(workingtree.WorkingTreeFormat):

    def get_format_description(self):

        return "Git Working Tree"