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# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
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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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# 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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# 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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"""Map from Git sha's to Bazaar objects."""
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from dulwich.objects import (
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from bzrlib.plugins.git.mapping import (
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inventory_to_tree_and_blobs,
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from bzrlib.plugins.git.shamap import (
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class GitObjectConverter(object):
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def __init__(self, repository, mapping=None):
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self.repository = repository
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self.mapping = self.repository.get_mapping()
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self.mapping = mapping
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self._idmap = SqliteGitShaMap(self.repository._transport)
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def _update_sha_map(self):
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all_revids = self.repository.all_revision_ids()
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graph = self.repository.get_graph()
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present_revids = set(self._idmap.revids())
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pb = ui.ui_factory.nested_progress_bar()
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for i, revid in enumerate(graph.iter_topo_order(all_revids)):
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if revid in present_revids:
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pb.update("updating git map", i, len(all_revids))
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self._update_sha_map_revision(revid)
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def _update_sha_map_revision(self, revid):
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inv = self.repository.get_inventory(revid)
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objects = inventory_to_tree_and_blobs(self.repository, self.mapping,
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for sha, o, path in objects:
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ie = inv[inv.path2id(path)]
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if ie.kind in ("file", "symlink"):
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self._idmap.add_entry(sha, "blob", (ie.file_id, ie.revision))
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elif ie.kind == "directory":
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self._idmap.add_entry(sha, "tree", (path, ie.revision))
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raise AssertionError()
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rev = self.repository.get_revision(revid)
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commit_obj = revision_to_commit(rev, tree_sha,
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self._idmap._parent_lookup)
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self._idmap.add_entry(commit_obj.sha().hexdigest(), "commit",
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def _get_blob(self, fileid, revision):
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"""Return a Git Blob object from a fileid and revision stored in bzr.
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:param fileid: File id of the text
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:param revision: Revision of the text
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text = self.repository.texts.get_record_stream([(fileid, revision)],
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"unordered", True).next().get_bytes_as("fulltext")
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def _get_tree(self, path, revid, inv=None):
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"""Return a Git Tree object from a path and a revision stored in bzr.
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:param path: path in the tree.
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:param revision: Revision of the tree.
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inv = self.repository.get_inventory(revid)
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fileid = inv.path2id(path)
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for name, ie in inv[fileid].children.iteritems():
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if ie.kind == "directory":
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subtree = self._get_tree(inv.id2path(ie.file_id), revid, inv)
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tree.add(stat.S_IFDIR, name.encode('UTF-8'),
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subtree.sha().hexdigest())
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elif ie.kind == "file":
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blob = self._get_blob(inv.path2id(ie.file_id), revid)
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mode = stat.S_IFREG | 0644
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tree.add(mode, name.encode('UTF-8'), blob.sha().hexdigest())
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elif ie.kind == "symlink":
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raise AssertionError("Symlinks not yet supported")
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def _get_commit(self, revid, tree_sha):
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rev = self.repository.get_revision(revid)
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return revision_to_commit(rev, tree_sha, self._idmap._parent_lookup)
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def __getitem__(self, sha):
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# See if sha is in map
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(type, type_data) = self._idmap.lookup_git_sha(sha)
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# if not, see if there are any unconverted revisions and add them
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# to the map, search for sha in map again
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self._update_sha_map()
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(type, type_data) = self._idmap.lookup_git_sha(sha)
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# convert object to git object
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return self._get_commit(*type_data)
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return self._get_blob(*type_data)
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return self._get_tree(*type_data)
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raise AssertionError("Unknown object type '%s'" % type)
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converter.py
