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push.py
 
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# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
 
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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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"""Push implementation that simply prints message saying push is not supported."""
 
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from bzrlib import (
 
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    ui,
 
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    )
 
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from bzrlib.repository import (
 
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    InterRepository,
 
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    )
 
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from bzrlib.plugins.git.errors import (
 
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    NoPushSupport,
 
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    )
 
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from bzrlib.plugins.git.mapping import (
 
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    inventory_to_tree_and_blobs,
 
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    revision_to_commit,
 
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    )
 
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from bzrlib.plugins.git.repository import (
 
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    GitRepository,
 
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    GitRepositoryFormat,
 
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    )
 
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class InterToGitRepository(InterRepository):
 
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    """InterRepository that copies into a Git repository."""
 
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    _matching_repo_format = GitRepositoryFormat()
 
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    @staticmethod
 
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    def _get_repo_format_to_test():
 
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        return None
 
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    def copy_content(self, revision_id=None, pb=None):
 
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        """See InterRepository.copy_content."""
 
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        self.fetch(revision_id, pb, find_ghosts=False)
 
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    def fetch(self, revision_id=None, pb=None, find_ghosts=False, 
 
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            fetch_spec=None):
 
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        raise NoPushSupport()
 
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    def import_revision_gist(self, revid, parent_lookup):
 
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        """Import the gist of a revision into this Git repository.
 
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        """
 
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        objects = []
 
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        rev = self.source.get_revision(revid)
 
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        for sha, object, path in inventory_to_tree_and_blobs(
 
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                self.source.get_inventory(revid), self.source.texts, None):
 
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            if path == "":
 
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                tree_sha = sha
 
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            objects.append((object, path))
 
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        commit = revision_to_commit(rev, tree_sha, parent_lookup)
 
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        objects.append((commit, None))
 
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        self.target._git.object_store.add_objects(objects)
 
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        return commit.sha().hexdigest()
 
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    def missing_revisions(self, stop_revision=None, ghosts=False):
 
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        if stop_revision is not None:
 
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            ancestry = [x for x in self.source.get_ancestry(stop_revision) if x is not None]
 
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        else:
 
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            ancestry = self.source.all_revision_ids()
 
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        missing = []
 
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        graph = self.source.get_graph()
 
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        for revid in graph.iter_topo_order(ancestry):
 
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            if not self.target.has_revision(revid):
 
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                missing.append(revid)
 
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            elif not ghosts:
 
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                break
 
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        return missing
 
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    def dfetch(self, stop_revision=None, fetch_ghosts=False):
 
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        """Import the gist of the ancestry of a particular revision."""
 
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        revidmap = {}
 
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        gitidmap = {}
 
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        def parent_lookup(revid):
 
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            try:
 
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                return gitidmap[revid]
 
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            except KeyError:
 
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                return self.target.lookup_git_revid(revid)[0]
 
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        mapping = self.target.get_mapping()
 
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        self.source.lock_write()
 
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        try:
 
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            todo = self.missing_revisions(stop_revision, ghosts=fetch_ghosts)
 
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            pb = ui.ui_factory.nested_progress_bar()
 
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            try:
 
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                for i, revid in enumerate(todo):
 
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                    pb.update("pushing revisions", i, len(todo))
 
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                    git_commit = self.import_revision_gist(revid, parent_lookup)
 
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                    gitidmap[revid] = git_commit
 
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                    git_revid = mapping.revision_id_foreign_to_bzr(git_commit)
 
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                    revidmap[revid] = git_revid
 
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            finally:
 
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                pb.finished()
 
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            if revidmap != {}:
 
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                self.source.fetch(self.target, 
 
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                        revision_id=revidmap[stop_revision])
 
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        finally:
 
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            self.source.unlock()
 
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        return revidmap
 
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    @staticmethod
 
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    def is_compatible(source, target):
 
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        """Be compatible with GitRepository."""
 
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        return (not isinstance(source, GitRepository) and 
 
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                isinstance(target, GitRepository))