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# Copyright (C) 2007 Canonical Ltd
# Copyright (C) 2008-2009 Jelmer Vernooij <jelmer@samba.org>
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""An adapter between a Git Repository and a Bazaar Branch"""
from bzrlib import (
errors,
inventory,
repository,
revision,
revisiontree,
)
from bzrlib.foreign import (
ForeignRepository,
)
from bzrlib.plugins.git.commit import (
GitCommitBuilder,
)
from bzrlib.plugins.git.mapping import (
default_mapping,
foreign_git,
mapping_registry,
)
from bzrlib.plugins.git.tree import (
GitRevisionTree,
)
from bzrlib.plugins.git.versionedfiles import (
GitRevisions,
GitTexts,
)
from dulwich.objects import (
Commit,
)
class GitRepository(ForeignRepository):
"""An adapter to git repositories for bzr."""
_serializer = None
_commit_builder_class = GitCommitBuilder
vcs = foreign_git
def __init__(self, gitdir, lockfiles):
ForeignRepository.__init__(self, GitRepositoryFormat(), gitdir,
lockfiles)
from bzrlib.plugins.git import fetch, push
for optimiser in [fetch.InterRemoteGitNonGitRepository,
fetch.InterLocalGitNonGitRepository,
fetch.InterGitGitRepository,
push.InterToLocalGitRepository,
push.InterToRemoteGitRepository]:
repository.InterRepository.register_optimiser(optimiser)
def is_shared(self):
return False
def supports_rich_root(self):
return True
def _warn_if_deprecated(self, branch=None):
# This class isn't deprecated
pass
def get_mapping(self):
return default_mapping
def make_working_trees(self):
return not self._git.bare
def revision_graph_can_have_wrong_parents(self):
return False
def dfetch(self, source, stop_revision):
interrepo = repository.InterRepository.get(source, self)
return interrepo.dfetch(stop_revision)
class LocalGitRepository(GitRepository):
"""Git repository on the file system."""
def __init__(self, gitdir, lockfiles):
GitRepository.__init__(self, gitdir, lockfiles)
self.base = gitdir.root_transport.base
self._git = gitdir._git
self.signatures = None
self.revisions = GitRevisions(self, self._git.object_store)
self.inventories = None
self.texts = GitTexts(self)
def _iter_revision_ids(self):
mapping = self.get_mapping()
for sha in self._git.object_store:
o = self._git.object_store[sha]
if not isinstance(o, Commit):
continue
rev, roundtrip_revid, verifiers = mapping.import_commit(o,
self.lookup_foreign_revision_id)
yield o.id, rev.revision_id, roundtrip_revid
def all_revision_ids(self):
ret = set([])
for git_sha, revid, roundtrip_revid in self._iter_revision_ids():
ret.add(revid)
if roundtrip_revid:
ret.add(roundtrip_revid)
return ret
def get_parent_map(self, revids):
parent_map = {}
for revision_id in revids:
assert isinstance(revision_id, str)
if revision_id == revision.NULL_REVISION:
parent_map[revision_id] = ()
continue
hexsha, mapping = self.lookup_bzr_revision_id(revision_id)
try:
commit = self._git[hexsha]
except KeyError:
continue
parent_map[revision_id] = [
self.lookup_foreign_revision_id(p, mapping)
for p in commit.parents]
return parent_map
def get_ancestry(self, revision_id, topo_sorted=True):
"""See Repository.get_ancestry().
"""
if revision_id is None:
return [None, revision.NULL_REVISION] + self._all_revision_ids()
assert isinstance(revision_id, str)
ancestry = []
graph = self.get_graph()
for rev, parents in graph.iter_ancestry([revision_id]):
ancestry.append(rev)
ancestry.reverse()
return [None] + ancestry
def get_signature_text(self, revision_id):
raise errors.NoSuchRevision(self, revision_id)
def pack(self, hint=None, clean_obsolete_packs=False):
self._git.object_store.pack_loose_objects()
def lookup_foreign_revision_id(self, foreign_revid, mapping=None):
"""Lookup a revision id.
"""
assert type(foreign_revid) is str
if mapping is None:
mapping = self.get_mapping()
from dulwich.protocol import (
ZERO_SHA,
)
if foreign_revid == ZERO_SHA:
return revision.NULL_REVISION
commit = self._git[foreign_revid]
rev, roundtrip_revid, verifiers = mapping.import_commit(commit,
lambda x: None)
# FIXME: check testament before doing this?
if roundtrip_revid:
return roundtrip_revid
else:
return rev.revision_id
def has_signature_for_revision_id(self, revision_id):
return False
def lookup_bzr_revision_id(self, bzr_revid, mapping=None):
try:
return mapping_registry.revision_id_bzr_to_foreign(bzr_revid)
except errors.InvalidRevisionId:
if mapping is None:
mapping = self.get_mapping()
try:
return (self._git.refs[mapping.revid_as_refname(bzr_revid)],
mapping)
except KeyError:
# Update refs from Git commit objects
# FIXME: Hitting this a lot will be very inefficient...
for git_sha, revid, roundtrip_revid in self._iter_revision_ids():
if not roundtrip_revid:
continue
refname = mapping.revid_as_refname(roundtrip_revid)
self._git.refs[refname] = git_sha
if roundtrip_revid == bzr_revid:
return git_sha, mapping
raise errors.NoSuchRevision(self, bzr_revid)
def get_revision(self, revision_id):
git_commit_id, mapping = self.lookup_bzr_revision_id(revision_id)
try:
commit = self._git[git_commit_id]
except KeyError:
raise errors.NoSuchRevision(self, revision_id)
revision, roundtrip_revid, verifiers = mapping.import_commit(
commit, self.lookup_foreign_revision_id)
assert revision is not None
# FIXME: check verifiers ?
if roundtrip_revid:
revision.revision_id = roundtrip_revid
return revision
def has_revision(self, revision_id):
try:
git_commit_id, mapping = self.lookup_bzr_revision_id(revision_id)
except errors.NoSuchRevision:
return False
return (git_commit_id in self._git)
def has_revisions(self, revision_ids):
return set(filter(self.has_revision, revision_ids))
def get_revisions(self, revids):
return [self.get_revision(r) for r in revids]
def revision_trees(self, revids):
for revid in revids:
yield self.revision_tree(revid)
def revision_tree(self, revision_id):
revision_id = revision.ensure_null(revision_id)
if revision_id == revision.NULL_REVISION:
inv = inventory.Inventory(root_id=None)
inv.revision_id = revision_id
return revisiontree.RevisionTree(self, inv, revision_id)
return GitRevisionTree(self, revision_id)
def get_inventory(self, revision_id):
assert revision_id != None
return self.revision_tree(revision_id).inventory
def set_make_working_trees(self, trees):
pass
def fetch_objects(self, determine_wants, graph_walker, resolve_ext_ref,
progress=None):
return self._git.fetch_objects(determine_wants, graph_walker, progress)
def _get_versioned_file_checker(self, text_key_references=None,
ancestors=None):
return GitVersionedFileChecker(self,
text_key_references=text_key_references, ancestors=ancestors)
class GitVersionedFileChecker(repository._VersionedFileChecker):
file_ids = []
def _check_file_version_parents(self, texts, progress_bar):
return {}, []
class GitRepositoryFormat(repository.RepositoryFormat):
"""Git repository format."""
supports_tree_reference = False
rich_root_data = True
def get_format_description(self):
return "Git Repository"
def initialize(self, url, shared=False, _internal=False):
raise errors.UninitializableFormat(self)
def check_conversion_target(self, target_repo_format):
return target_repo_format.rich_root_data
def get_foreign_tests_repository_factory(self):
from bzrlib.plugins.git.tests.test_repository import (
ForeignTestsRepositoryFactory,
)
return ForeignTestsRepositoryFactory()
def network_name(self):
return "git"
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