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- Committer: Robert Collins
- Date: 2006-07-15 12:25:27 UTC
- mto: (0.312.1 master) (6883.23.1 bundle-git)
- mto: This revision was merged to the branch mainline in revision 6960.
- Revision ID: robertc@robertcollins.net-20060715122527-6c66f16cfa459341
Commit initial content.
- files added:
- INSTALL
- files removed:
- HACKING
- notes
- tests
- files modified:
- .bzrignore
added
removed
repository.py
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# Copyright (C) 2007 Canonical Ltd
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# Copyright (C) 2008-2009 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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"""An adapter between a Git Repository and a Bazaar Branch"""
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import bzrlib
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from bzrlib import (
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errors,
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graph,
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inventory,
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osutils,
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repository,
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revision,
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revisiontree,
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ui,
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urlutils,
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)
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from bzrlib.foreign import (
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ForeignRepository,
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)
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from bzrlib.trace import (
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mutter,
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)
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from bzrlib.transport import (
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get_transport,
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)
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from bzrlib.plugins.git.commit import (
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GitCommitBuilder,
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)
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from bzrlib.plugins.git.inventory import (
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GitInventory,
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)
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from bzrlib.plugins.git.mapping import (
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default_mapping,
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foreign_git,
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mapping_registry,
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)
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from bzrlib.plugins.git.versionedfiles import (
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GitRevisions,
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GitTexts,
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)
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class GitRepository(ForeignRepository):
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"""An adapter to git repositories for bzr."""
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_serializer = None
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_commit_builder_class = GitCommitBuilder
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vcs = foreign_git
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def __init__(self, gitdir, lockfiles):
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ForeignRepository.__init__(self, GitRepositoryFormat(), gitdir,
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lockfiles)
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from bzrlib.plugins.git import fetch, push
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for optimiser in [fetch.InterRemoteGitNonGitRepository,
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fetch.InterLocalGitNonGitRepository,
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fetch.InterGitGitRepository,
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push.InterToLocalGitRepository,
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push.InterToRemoteGitRepository]:
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repository.InterRepository.register_optimiser(optimiser)
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def is_shared(self):
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return True
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def supports_rich_root(self):
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return True
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def _warn_if_deprecated(self):
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# This class isn't deprecated
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pass
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def get_mapping(self):
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return default_mapping
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def make_working_trees(self):
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return True
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def revision_graph_can_have_wrong_parents(self):
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return False
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def dfetch(self, source, stop_revision):
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interrepo = repository.InterRepository.get(source, self)
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return interrepo.dfetch(stop_revision)
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def dfetch_refs(self, source, stop_revision):
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interrepo = repository.InterRepository.get(source, self)
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return interrepo.dfetch_refs(stop_revision)
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class LocalGitRepository(GitRepository):
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"""Git repository on the file system."""
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def __init__(self, gitdir, lockfiles):
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# FIXME: This also caches negatives. Need to be more careful
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# about this once we start writing to git
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self._parents_provider = graph.CachingParentsProvider(self)
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GitRepository.__init__(self, gitdir, lockfiles)
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self.base = gitdir.root_transport.base
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self._git = gitdir._git
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self.texts = None
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self.signatures = None
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self.revisions = GitRevisions(self._git.object_store)
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self.inventories = None
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self.texts = GitTexts(self)
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def all_revision_ids(self):
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ret = set([revision.NULL_REVISION])
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heads = self._git.refs.as_dict('refs/heads')
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if heads == {}:
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return ret
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bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in heads.itervalues()]
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ret = set(bzr_heads)
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graph = self.get_graph()
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for rev, parents in graph.iter_ancestry(bzr_heads):
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ret.add(rev)
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return ret
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def _make_parents_provider(self):
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"""See Repository._make_parents_provider()."""
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return self._parents_provider
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def get_parent_map(self, revids):
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parent_map = {}
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for revision_id in revids:
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assert isinstance(revision_id, str)
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if revision_id == revision.NULL_REVISION:
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parent_map[revision_id] = ()
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continue
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hexsha, mapping = self.lookup_git_revid(revision_id)
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commit = self._git.commit(hexsha)
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if commit is None:
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continue
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else:
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parent_map[revision_id] = [mapping.revision_id_foreign_to_bzr(p) for p in commit.parents]
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return parent_map
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def get_ancestry(self, revision_id, topo_sorted=True):
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"""See Repository.get_ancestry().
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"""
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if revision_id is None:
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return [None, revision.NULL_REVISION] + self._all_revision_ids()
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assert isinstance(revision_id, str)
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ancestry = []
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graph = self.get_graph()
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for rev, parents in graph.iter_ancestry([revision_id]):
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ancestry.append(rev)
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ancestry.reverse()
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return [None] + ancestry
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def get_signature_text(self, revision_id):
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raise errors.NoSuchRevision(self, revision_id)
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def lookup_revision_id(self, revid):
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"""Lookup a revision id.
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:param revid: Bazaar revision id.
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:return: Tuple with git revisionid and mapping.
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"""
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# Yes, this doesn't really work, but good enough as a stub
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return osutils.sha(rev_id).hexdigest(), self.get_mapping()
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def has_signature_for_revision_id(self, revision_id):
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return False
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def lookup_git_revid(self, bzr_revid):
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try:
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return mapping_registry.revision_id_bzr_to_foreign(bzr_revid)
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except errors.InvalidRevisionId:
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raise errors.NoSuchRevision(self, bzr_revid)
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def get_revision(self, revision_id):
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git_commit_id, mapping = self.lookup_git_revid(revision_id)
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try:
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commit = self._git.commit(git_commit_id)
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except KeyError:
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raise errors.NoSuchRevision(self, revision_id)
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# print "fetched revision:", git_commit_id
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revision = mapping.import_commit(commit)
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assert revision is not None
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return revision
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def has_revision(self, revision_id):
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try:
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self.get_revision(revision_id)
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except errors.NoSuchRevision:
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return False
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else:
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return True
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def get_revisions(self, revids):
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return [self.get_revision(r) for r in revids]
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def revision_trees(self, revids):
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for revid in revids:
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yield self.revision_tree(revid)
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def revision_tree(self, revision_id):
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revision_id = revision.ensure_null(revision_id)
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if revision_id == revision.NULL_REVISION:
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inv = inventory.Inventory(root_id=None)
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inv.revision_id = revision_id
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return revisiontree.RevisionTree(self, inv, revision_id)
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return GitRevisionTree(self, revision_id)
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def get_inventory(self, revision_id):
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assert revision_id != None
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return self.revision_tree(revision_id).inventory
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def set_make_working_trees(self, trees):
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pass
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def fetch_objects(self, determine_wants, graph_walker, resolve_ext_ref,
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progress=None):
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return self._git.fetch_objects(determine_wants, graph_walker, progress)
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class GitRevisionTree(revisiontree.RevisionTree):
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def __init__(self, repository, revision_id):
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self._revision_id = revision_id
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self._repository = repository
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store = repository._git.object_store
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assert isinstance(revision_id, str)
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git_id, self.mapping = repository.lookup_git_revid(revision_id)
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try:
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commit = store[git_id]
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except KeyError, r:
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raise errors.NoSuchRevision(repository, revision_id)
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self.tree = commit.tree
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self._inventory = GitInventory(self.tree, self.mapping, store,
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revision_id)
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def get_revision_id(self):
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return self._revision_id
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def get_file_text(self, file_id, path=None):
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if path is not None:
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entry = self._inventory._get_ie(path)
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else:
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entry = self._inventory[file_id]
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if entry.kind == 'directory': return ""
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return entry.object.data
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class GitRepositoryFormat(repository.RepositoryFormat):
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"""Git repository format."""
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supports_tree_reference = False
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rich_root_data = True
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def get_format_description(self):
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return "Git Repository"
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def initialize(self, url, shared=False, _internal=False):
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raise bzr_errors.UninitializableFormat(self)
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def check_conversion_target(self, target_repo_format):
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return target_repo_format.rich_root_data
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def network_name(self):
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return "git"
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