/brz/remove-bazaar

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gitlib/git_branch.py
 
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# Copyright (C) 2007 Canonical Ltd
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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"""An adapter between a Git Branch and a Bazaar Branch"""
 
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from bzrlib import (
 
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    branch,
 
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    config,
 
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    revision,
 
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    )
 
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from bzrlib.decorators import needs_read_lock
 
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from bzrlib.plugins.git.gitlib import ids
 
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class GitBranchConfig(config.BranchConfig):
 
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    """BranchConfig that uses locations.conf in place of branch.conf"""
 
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    def __init__(self, branch):
 
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        config.BranchConfig.__init__(self, branch)
 
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        # do not provide a BranchDataConfig
 
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        self.option_sources = self.option_sources[0], self.option_sources[2]
 
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    def set_user_option(self, name, value, local=False):
 
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        """Force local to True"""
 
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        config.BranchConfig.set_user_option(self, name, value, local=True)
 
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class GitBranchFormat(branch.BranchFormat):
 
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    def get_branch_description(self):
 
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        return 'Git Branch'
 
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class GitBranch(branch.Branch):
 
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    """An adapter to git repositories for bzr Branch objects."""
 
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    def __init__(self, gitdir, lockfiles):
 
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        from bzrlib.plugins.git.gitlib import git_repository
 
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        self.bzrdir = gitdir
 
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        self.control_files = lockfiles
 
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        self.repository = git_repository.GitRepository(gitdir, lockfiles)
 
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        self.base = gitdir.root_transport.base
 
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        if '.git' not in gitdir.root_transport.list_dir('.'):
 
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            raise errors.NotBranchError(self.base)
 
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        self._format = GitBranchFormat()
 
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    def lock_write(self):
 
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        self.control_files.lock_write()
 
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    @needs_read_lock
 
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    def last_revision(self):
 
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        # perhaps should escape this ?
 
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        head_git_id = self.repository._git.get_head()
 
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        if head_git_id is None:
 
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            return revision.NULL_REVISION
 
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        return ids.convert_revision_id_git_to_bzr(head_git_id)
 
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    @needs_read_lock
 
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    def revision_history(self):
 
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        node = self.last_revision()
 
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        if node == revision.NULL_REVISION:
 
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            return []
 
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        ancestors = self.repository.get_revision_graph(node)
 
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        history = []
 
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        while node is not None:
 
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            history.append(node)
 
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            if len(ancestors[node]) > 0:
 
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                node = ancestors[node][0]
 
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            else:
 
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                node = None
 
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        return list(reversed(history))
 
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    def get_config(self):
 
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        return GitBranchConfig(self)
 
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    def lock_read(self):
 
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        self.control_files.lock_read()
 
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    def unlock(self):
 
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        self.control_files.unlock()
 
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    def get_push_location(self):
 
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        """See Branch.get_push_location."""
 
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        push_loc = self.get_config().get_user_option('push_location')
 
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        return push_loc
 
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    def set_push_location(self, location):
 
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        """See Branch.set_push_location."""
 
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        self.get_config().set_user_option('push_location', location,
 
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                                          local=True)