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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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from bzrlib.foreign import (
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from bzrlib.trace import mutter
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from bzrlib.transport import get_transport
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from bzrlib.plugins.git.foreign import (
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from bzrlib.plugins.git.mapping import default_mapping
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from bzrlib.plugins.git import git
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class GitTags(object):
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def __init__(self, tags):
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return iter(self._tags)
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class GitRepository(ForeignRepository):
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from bzrlib.plugins.git import (
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class GitRepository(repository.Repository):
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"""An adapter to git repositories for bzr."""
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# To make bzrlib happy
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def __init__(self, gitdir, lockfiles):
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ForeignRepository.__init__(self, GitFormat(), gitdir, lockfiles)
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from bzrlib.plugins.git import fetch
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repository.InterRepository.register_optimiser(fetch.InterGitRepository)
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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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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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def supports_rich_root(self):
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def _warn_if_deprecated(self):
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# This class isn't deprecated
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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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class LocalGitRepository(GitRepository):
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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.signatures = versionedfiles.VirtualSignatureTexts(self)
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self.revisions = versionedfiles.VirtualRevisionTexts(self)
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self.tags = GitTags(self._git.get_tags())
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def all_revision_ids(self):
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ret = set([revision.NULL_REVISION])
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if self._git.heads() == []:
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bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in self._git.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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#def get_revision_delta(self, revision_id):
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# parent_revid = self.get_revision(revision_id).parent_ids[0]
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# diff = self._git.diff(ids.convert_revision_id_bzr_to_git(parent_revid),
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# ids.convert_revision_id_bzr_to_git(revision_id))
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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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mutter("get_parent_map(%r)", revids)
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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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hexsha = self.lookup_git_revid(revision_id, self.get_mapping())
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commit = self._git.commit(hexsha)
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parent_map[revision_id] = [self.get_mapping().revision_id_foreign_to_bzr(p) for p in commit.parents]
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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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if revision_id is None:
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return self._all_revision_ids()
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assert isinstance(revision_id, str)
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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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if rev == revision.NULL_REVISION:
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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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# 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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def lookup_git_revid(self, bzr_revid, mapping):
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return mapping.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_graph(self, revision_id=None):
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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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git_graph = self._git.get_revision_graph(param)
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for node, parents in git_graph.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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result[bzr_node] = bzr_parents
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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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git_graph = self._git.get_revision_graph(revision_ids)
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for node, parents in git_graph.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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graph.add_node(bzr_node, bzr_parents)
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def get_revision(self, revision_id):
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git_commit_id = self.lookup_git_revid(revision_id, self.get_mapping())
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commit = self._git.commit(git_commit_id)
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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 = self.get_mapping().import_commit(commit)
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assert revision is not None
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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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self.get_revision(revision_id)
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except errors.NoSuchRevision:
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except NoSuchRevision:
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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 get_revisions(self, revisions):
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return [self.get_revision(r) for r in revisions]
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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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* 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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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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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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name, value = line[:-1].split(' ', 1)
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rev.parent_ids.append(
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ids.convert_revision_id_git_to_bzr(value))
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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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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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rev.properties['git-tree-id'] = value
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rev.message = ''.join(message_lines)
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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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sign = {'+': +1, '-': -1}[tz[0]]
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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:
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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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return GitRevisionTree(self, revision_id)
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def get_inventory(self, revision_id):
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if revision_id is None:
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revision_id = revision.NULL_REVISION
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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, self.get_mapping(), 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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def fetch_objects(self, determine_wants, graph_walker, 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, mapping, revision_id):
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self._repository = repository
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self.revision_id = revision_id
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assert isinstance(revision_id, str)
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self.mapping = mapping
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git_id = repository.lookup_git_revid(revision_id, self.mapping)
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commit = repository._git.commit(git_id)
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raise errors.NoSuchRevision(repository, revision_id)
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self.tree = commit.tree
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self._inventory = inventory.Inventory(revision_id=revision_id)
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self._inventory.root.revision = revision_id
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self._build_inventory(self.tree, self._inventory.root, "")
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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):
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entry = self._inventory[file_id]
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if entry.kind == 'directory': return ""
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return self._repository._git.get_blob(entry.text_id).data
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def _build_inventory(self, tree_id, ie, path):
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assert isinstance(path, str)
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tree = self._repository._git.tree(tree_id)
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for mode, name, hexsha in tree.entries():
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basename = name.decode("utf-8")
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child_path = urlutils.join(path, name)
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file_id = self.mapping.generate_file_id(child_path)
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entry_kind = (mode & 0700000) / 0100000
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child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
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elif entry_kind == 1:
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file_kind = (mode & 070000) / 010000
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b = self._repository._git.get_blob(hexsha)
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child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
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child_ie.text_sha1 = osutils.sha_string(b.data)
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child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
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child_ie.text_sha1 = osutils.sha_string("")
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return inventory.Inventory(
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revision_id=revision_id, root_id=None)
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git_commit = ids.convert_revision_id_bzr_to_git(revision_id)
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git_inventory = self._git.get_inventory(git_commit)
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return self._parse_inventory(revision_id, git_inventory)
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def _parse_inventory(klass, revid, git_inv):
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# For now, git inventory do not have root ids. It is not clear that we
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# can reliably support root ids. -- David Allouche 2007-12-28
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inv = inventory.Inventory(revision_id=revid)
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for perms, git_kind, git_id, path in git_inv:
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if git_kind == 'blob':
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executable = bool(int(perms[-3:], 8) & 0111)
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elif perms[1] == '2':
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raise AssertionError(
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"Unknown file kind, perms=%o." % (mode,))
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child_ie.text_id = b.id
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child_ie.text_size = len(b.data)
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"Unknown blob kind, perms=%r." % (perms,))
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elif git_kind == 'tree':
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raise AssertionError(
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"Unknown blob kind, perms=%r." % (mode,))
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fs_mode = mode & 0777
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child_ie.executable = bool(fs_mode & 0111)
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child_ie.revision = self.revision_id
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self._inventory.add(child_ie)
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self._build_inventory(hexsha, child_ie, child_path)
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class GitFormat(object):
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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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"Unknown git entry kind: %r" % (git_kind,))
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# XXX: Maybe the file id should be prefixed by file kind, so when
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# the kind of path changes, the id changes too.
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# -- David Allouche 2007-12-28.
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entry = inv.add_path(path, kind, file_id=path.encode('utf-8'))
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entry.text_sha1 = text_sha1
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entry.executable = executable
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class GitRevisionTree(revisiontree.RevisionTree):
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def __init__(self, repository, revision_id):
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if revision_id is None:
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revision_id = revision.NULL_REVISION
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self._inventory = repository.get_inventory(revision_id)
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self._repository = repository
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self._revision_id = revision_id
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def get_file_lines(self, file_id):
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obj_id = self._inventory[file_id].text_sha1
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return self._repository._git.cat_file('blob', obj_id)
added
removed
git_repository.py
