/brz/remove-bazaar

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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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    tag,
 
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    )
 
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from bzrlib.decorators import needs_read_lock
 
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from bzrlib.plugins.git.foreign import ForeignBranch
 
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from bzrlib.plugins.git.mapping import default_mapping
 
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class GitTagDict(tag.BasicTags):
 
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    def __init__(self, branch):
 
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        self.branch = branch
 
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        self.repository = branch.repository
 
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    def get_tag_dict(self):
 
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        ret = {}
 
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        for tag in self.repository._git.tags:
 
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            ret[tag.name] = self.branch.mapping.revision_id_foreign_to_bzr(tag.commit.id)
 
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        return ret
 
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    def set_tag(self, name, revid):
 
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        raise NotImplementedError(self.set_tag)
 
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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_format_description(self):
 
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        return 'Git Branch'
 
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    def supports_tags(self):
 
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        return True
 
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class GitBranch(ForeignBranch):
 
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    """An adapter to git repositories for bzr Branch objects."""
 
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    def __init__(self, bzrdir, repository, head, base, lockfiles):
 
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        self.repository = repository
 
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        super(GitBranch, self).__init__(default_mapping)
 
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        self.control_files = lockfiles
 
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        self.bzrdir = bzrdir
 
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        self.head = head
 
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        self.base = 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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        if self.head is None:
 
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            return revision.NULL_REVISION
 
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        return self.mapping.revision_id_foreign_to_bzr(self.head)
 
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    def _make_tags(self):
 
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        return GitTagDict(self)
 
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    def get_parent(self):
 
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        """See Branch.get_parent()."""
 
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        return None
 
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    def get_stacked_on_url(self):
 
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        return None
 
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    def _gen_revision_history(self):
 
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        if self.head is None:
 
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            return []
 
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        skip = 0
 
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        cms = None
 
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        ret = []
 
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        max_count = 1000
 
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        nextid = self.head
 
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        while cms != []:
 
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            cms = self.repository._git.commits(self.head, max_count=max_count, skip=skip)
 
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            skip += max_count
 
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            for cm in cms:
 
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                if cm.id == nextid:
 
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                    ret.append(self.mapping.revision_id_foreign_to_bzr(cm.id))
 
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                    if cm.parents == []:
 
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                        nextid = None
 
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                    else:
 
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                        nextid = cm.parents[0].id
 
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        ret.reverse()
 
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        return ret
 
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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_physical_lock_status(self):
 
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        return False
 
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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)
 
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    def supports_tags(self):
 
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        return True
 
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    def sprout(self, to_bzrdir, revision_id=None):
 
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        """See Branch.sprout()."""
 
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        result = to_bzrdir.create_branch()
 
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        self.copy_content_into(result, revision_id=revision_id)
 
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        result.set_parent(self.bzrdir.root_transport.base)
 
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        return result
 
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