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- Committer: David Allouche
- Date: 2007-12-28 20:28:47 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: ddaa@canonical.com-20071228202847-jilx7blupxy0v3xn
GitRepository.supports_rich_root() => False
- files added:
- INSTALL
- files removed:
- HACKING
- notes
- files renamed:
- branch.py => git_branch.py
- dir.py => git_dir.py
- repository.py => git_repository.py
- mapping.py => ids.py
- tests/test_branch.py => tests/test_git_branch.py
- tests/test_dir.py => tests/test_git_dir.py
- tests/test_repository.py => tests/test_git_repository.py
- tests/test_mapping.py => tests/test_ids.py
- files modified:
- .bzrignore
added
removed
git_repository.py
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1
# Copyright (C) 2007 Canonical Ltd
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# Copyright (C) 2008-2009 Jelmer Vernooij <jelmer@samba.org>
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2
#
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3
# This program is free software; you can redistribute it and/or modify
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4
# it under the terms of the GNU General Public License as published by
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"""An adapter between a Git Repository and a Bazaar Branch"""
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from bzrlib import (
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errors,
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deprecated_graph,
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inventory,
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repository,
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revision,
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revisiontree,
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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.plugins.git.commit import (
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GitCommitBuilder,
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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.tree import (
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GitRevisionTree,
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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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from dulwich.objects import (
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Commit,
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)
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class GitRepository(ForeignRepository):
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urlutils,
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)
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from bzrlib.plugins.git import (
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ids,
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model,
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)
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class GitRepository(repository.Repository):
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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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self.bzrdir = gitdir
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self.control_files = lockfiles
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gitdirectory = gitdir.transport.local_abspath('.')
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self._git = model.GitModel(gitdirectory)
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self._revision_cache = {}
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def _ancestor_revisions(self, revision_ids):
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if revision_ids is not None:
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git_revisions = [gitrevid_from_bzr(r) for r in revision_ids]
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else:
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git_revisions = None
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for lines in self._git.ancestor_lines(git_revisions):
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yield self._parse_rev(lines)
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def is_shared(self):
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return False
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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, branch=None):
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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 not self._git.bare
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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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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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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.signatures = None
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self.revisions = GitRevisions(self, self._git.object_store)
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self.inventories = None
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self.texts = GitTexts(self)
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def _iter_revision_ids(self):
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mapping = self.get_mapping()
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for sha in self._git.object_store:
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o = self._git.object_store[sha]
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if not isinstance(o, Commit):
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continue
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rev, roundtrip_revid, verifiers = mapping.import_commit(o,
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self.lookup_foreign_revision_id)
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yield o.id, rev.revision_id, roundtrip_revid
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def all_revision_ids(self):
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ret = set([])
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for git_sha, revid, roundtrip_revid in self._iter_revision_ids():
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ret.add(revid)
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if roundtrip_revid:
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ret.add(roundtrip_revid)
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return ret
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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_bzr_revision_id(revision_id)
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try:
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commit = self._git[hexsha]
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except KeyError:
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continue
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parent_map[revision_id] = [
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self.lookup_foreign_revision_id(p, mapping)
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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 pack(self, hint=None, clean_obsolete_packs=False):
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self._git.object_store.pack_loose_objects()
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def lookup_foreign_revision_id(self, foreign_revid, mapping=None):
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"""Lookup a revision id.
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"""
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assert type(foreign_revid) is str
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if mapping is None:
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mapping = self.get_mapping()
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from dulwich.protocol import (
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ZERO_SHA,
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)
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if foreign_revid == ZERO_SHA:
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return revision.NULL_REVISION
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commit = self._git[foreign_revid]
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rev, roundtrip_revid, verifiers = mapping.import_commit(commit,
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lambda x: None)
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# FIXME: check testament before doing this?
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if roundtrip_revid:
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return roundtrip_revid
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def get_revision_graph(self, revision_id=None):
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result = {}
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if revision_id is not None:
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param = [ids.convert_revision_id_bzr_to_git(revision_id)]
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else:
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return rev.revision_id
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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_bzr_revision_id(self, bzr_revid, mapping=None):
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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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if mapping is None:
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mapping = self.get_mapping()
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try:
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return (self._git.refs[mapping.revid_as_refname(bzr_revid)],
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mapping)
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except KeyError:
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# Update refs from Git commit objects
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# FIXME: Hitting this a lot will be very inefficient...
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for git_sha, revid, roundtrip_revid in self._iter_revision_ids():
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if not roundtrip_revid:
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continue
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refname = mapping.revid_as_refname(roundtrip_revid)
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self._git.refs[refname] = git_sha
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if roundtrip_revid == bzr_revid:
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return git_sha, mapping
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raise errors.NoSuchRevision(self, bzr_revid)
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param = None
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for node, parents in self._git.ancestry(param).iteritems():
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bzr_node = ids.convert_revision_id_git_to_bzr(node)
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bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
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for n in parents]
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result[bzr_node] = bzr_parents
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return result
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def get_revision_graph_with_ghosts(self, revision_ids=None):
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graph = deprecated_graph.Graph()
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if revision_ids is not None:
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revision_ids = [ids.convert_revision_id_bzr_to_git(r)
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for r in revision_ids]
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for node, parents in self._git.ancestry(revision_ids).iteritems():
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bzr_node = ids.convert_revision_id_git_to_bzr(node)
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bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
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for n in parents]
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graph.add_node(bzr_node, bzr_parents)
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return graph
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def get_revision(self, revision_id):
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git_commit_id, mapping = self.lookup_bzr_revision_id(revision_id)
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try:
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commit = self._git[git_commit_id]
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except KeyError:
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raise errors.NoSuchRevision(self, revision_id)
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revision, roundtrip_revid, verifiers = mapping.import_commit(
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commit, self.lookup_foreign_revision_id)
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assert revision is not None
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# FIXME: check verifiers ?
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if roundtrip_revid:
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revision.revision_id = roundtrip_revid
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return revision
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if revision_id in self._revision_cache:
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return self._revision_cache[revision_id]
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raw = self._git.rev_list(
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[ids.convert_revision_id_bzr_to_git(revision_id)],
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max_count=1, header=True)
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return self._parse_rev(raw)
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def has_revision(self, revision_id):
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try:
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git_commit_id, mapping = self.lookup_bzr_revision_id(revision_id)
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except errors.NoSuchRevision:
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self.get_revision(revision_id)
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except NoSuchRevision:
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return False
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return (git_commit_id in self._git)
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def has_revisions(self, revision_ids):
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return set(filter(self.has_revision, revision_ids))
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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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else:
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return True
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def get_revisions(self, revisions):
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return [self.get_revision(r) for r in revisions]
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@classmethod
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def _parse_rev(klass, raw):
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"""Parse a single git revision.
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* The first line is the git commit id.
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* Following lines conform to the 'name value' structure, until the
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first blank line.
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* All lines after the first blank line and until the NULL line have 4
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leading spaces and constitute the commit message.
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:param raw: sequence of newline-terminated strings, its last item is a
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single NULL character.
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:return: a `bzrlib.revision.Revision` object.
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"""
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parents = []
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message_lines = []
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in_message = False
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committer_was_set = False
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revision_id = ids.convert_revision_id_git_to_bzr(raw[0][:-1])
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rev = revision.Revision(revision_id)
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rev.inventory_sha1 = ""
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assert raw[-1] == '\x00', (
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"Last item of raw was not a single NULL character.")
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for line in raw[1:-1]:
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if in_message:
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assert line[:4] == ' ', (
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"Unexpected line format in commit message: %r" % line)
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message_lines.append(line[4:])
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continue
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if line == '\n':
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in_message = True
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continue
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name, value = line[:-1].split(' ', 1)
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if name == 'parent':
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rev.parent_ids.append(
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ids.convert_revision_id_git_to_bzr(value))
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continue
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if name == 'author':
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author, timestamp, timezone = value.rsplit(' ', 2)
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rev.properties['author'] = author
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rev.properties['git-author-timestamp'] = timestamp
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rev.properties['git-author-timezone'] = timezone
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if not committer_was_set:
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rev.committer = author
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rev.timestamp = float(timestamp)
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rev.timezone = klass._parse_tz(timezone)
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continue
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if name == 'committer':
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committer_was_set = True
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committer, timestamp, timezone = value.rsplit(' ', 2)
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rev.committer = committer
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rev.timestamp = float(timestamp)
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rev.timezone = klass._parse_tz(timezone)
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continue
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if name == 'tree':
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rev.properties['git-tree-id'] = value
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continue
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rev.message = ''.join(message_lines)
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return rev
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@classmethod
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def _parse_tz(klass, tz):
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"""Parse a timezone specification in the [+|-]HHMM format.
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:return: the timezone offset in seconds.
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"""
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assert len(tz) == 5
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sign = {'+': +1, '-': -1}[tz[0]]
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hours = int(tz[1:3])
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minutes = int(tz[3:])
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return float(sign * 60 * (60 * hours + minutes))
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def revision_trees(self, revids):
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for revid in revids:
235
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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)
239
if revision_id == revision.NULL_REVISION:
240
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)
243
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return GitRevisionTree(self, revision_id)
244
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245
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def get_inventory(self, revision_id):
246
assert revision_id != None
247
return self.revision_tree(revision_id).inventory
248
249
def set_make_working_trees(self, trees):
250
pass
251
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def fetch_objects(self, determine_wants, graph_walker, resolve_ext_ref,
253
progress=None):
254
return self._git.fetch_objects(determine_wants, graph_walker, progress)
255
256
def _get_versioned_file_checker(self, text_key_references=None,
257
ancestors=None):
258
return GitVersionedFileChecker(self,
259
text_key_references=text_key_references, ancestors=ancestors)
260
261
262
class GitVersionedFileChecker(repository._VersionedFileChecker):
263
264
file_ids = []
265
266
def _check_file_version_parents(self, texts, progress_bar):
267
return {}, []
268
269
270
class GitRepositoryFormat(repository.RepositoryFormat):
271
"""Git repository format."""
272
273
supports_tree_reference = False
274
rich_root_data = True
275
276
def get_format_description(self):
277
return "Git Repository"
278
279
def initialize(self, url, shared=False, _internal=False):
280
raise errors.UninitializableFormat(self)
281
282
def check_conversion_target(self, target_repo_format):
283
return target_repo_format.rich_root_data
284
285
def get_foreign_tests_repository_factory(self):
286
from bzrlib.plugins.git.tests.test_repository import (
287
ForeignTestsRepositoryFactory,
288
)
289
return ForeignTestsRepositoryFactory()
290
291
def network_name(self):
292
return "git"
184
if revision_id is None:
185
revision_id = revision.NULL_REVISION
186
if revision_id == revision.NULL_REVISION:
187
return inventory.Inventory(
188
revision_id=revision_id, root_id=None)
189
git_commit = ids.convert_revision_id_bzr_to_git(revision_id)
190
git_inventory = self._git.get_inventory(git_commit)
191
return self._parse_inventory(revision_id, git_inventory)
192
193
@classmethod
194
def _parse_inventory(klass, revid, git_inv):
195
# For now, git inventory do not have root ids. It is not clear that we
196
# can reliably support root ids. -- David Allouche 2007-12-28
197
inv = inventory.Inventory(revision_id=revid)
198
for perms, git_kind, git_id, path in git_inv:
199
text_sha1 = None
200
executable = False
201
if git_kind == 'blob':
202
text_sha1 = git_id
203
if perms[1] == '0':
204
kind = 'file'
205
executable = bool(int(perms[-3:], 8) & 0111)
206
elif perms[1] == '2':
207
kind = 'symlink'
208
else:
209
raise AssertionError(
210
"Unknown blob kind, perms=%r." % (perms,))
211
elif git_kind == 'tree':
212
kind = 'directory'
213
else:
214
raise AssertionError(
215
"Unknown git entry kind: %r" % (git_kind,))
216
# XXX: Maybe the file id should be prefixed by file kind, so when
217
# the kind of path changes, the id changes too.
218
# -- David Allouche 2007-12-28.
219
entry = inv.add_path(path, kind, file_id=path.encode('utf-8'))
220
entry.text_sha1 = text_sha1
221
entry.executable = executable
222
return inv
223
224
225
class GitRevisionTree(revisiontree.RevisionTree):
226
227
def __init__(self, repository, revision_id):
228
if revision_id is None:
229
revision_id = revision.NULL_REVISION
230
self._inventory = repository.get_inventory(revision_id)
231
self._repository = repository
232
self._revision_id = revision_id
233
234
def get_file_lines(self, file_id):
235
obj_id = self._inventory[file_id].text_sha1
236
return self._repository._git.cat_file('blob', obj_id)
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