/brz/remove-bazaar

# Copyright (C) 2011 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

from ...controldir import ControlDir

from ...commands import Command

class cmd_repo_has_key(Command):

    """Does a repo have a key?

    e.g.::

      bzr repo-has-key texts FILE-ID REVISION-ID

      bzr repo-has-key revisions REVISION-ID

    It either prints "True" or "False", and terminates with exit code 0 or 1

    respectively.

    """

    hidden = True

    takes_args = ['repo', 'key_parts*']

    def run(self, repo, key_parts_list=None):

        vf_name, key = key_parts_list[0], key_parts_list[1:]

        bd = ControlDir.open(repo)

        repo = bd.open_repository()

        with repo.lock_read():

            vf = getattr(repo, vf_name)

            key = tuple(key)

            if key in vf.get_parent_map([key]):

                self.outf.write("True\n")

                return 0

            else:

                self.outf.write("False\n")

                return 1