/brz/remove-bazaar : revision 0.200.55

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"""An adapter between a Git Repository and a Bazaar Branch"""

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import dulwich as git

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import os

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import time

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import bzrlib

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from bzrlib import (

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deprecated_graph,

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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 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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versionedfiles,

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)

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from bzrlib.plugins.git.mapping import (

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default_mapping,

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inventory_to_tree_and_blobs,

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mapping_registry,

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revision_to_commit,

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)

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from bzrlib.plugins.git.versionedfiles import GitTexts

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class GitTags(object):

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def __init__(self, tags):

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self._tags = tags

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def __iter__(self):

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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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cache,

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ids,

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model,

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)

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cachedbs = {}

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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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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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repository.InterRepository.register_optimiser(fetch.InterGitNonGitRepository)

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self.bzrdir = gitdir

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self.control_files = lockfiles

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self._git = self._make_model(gitdir.transport)

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self._revision_cache = {}

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self._blob_cache = {}

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self._blob_info_cache = {}

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cache_dir = cache.create_cache_dir()

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cachedir_transport = get_transport(cache_dir)

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cache_file = os.path.join(cache_dir, 'cache-%s' % ids.NAMESPACE)

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if not cachedbs.has_key(cache_file):

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cachedbs[cache_file] = cache.sqlite3.connect(cache_file)

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self.cachedb = cachedbs[cache_file]

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self._init_cachedb()

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self._format = GitFormat()

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def _init_cachedb(self):

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self.cachedb.executescript("""

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create table if not exists inventory (

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revid blob);

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create unique index if not exists inventory_revid

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on inventory (revid);

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create table if not exists entry_revision (

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inventory blob,

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path blob,

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gitid blob,

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executable integer,

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revision blob);

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create unique index if not exists entry_revision_revid_path

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on entry_revision (inventory, path);

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""")

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self.cachedb.commit()

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@classmethod

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def _make_model(klass, transport):

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gitdirectory = transport.local_abspath('.')

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return model.GitModel(gitdirectory)

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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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# print "fetched ancestors:", git_revisions

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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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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.texts = None

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self.signatures = versionedfiles.VirtualSignatureTexts(self)

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self.revisions = versionedfiles.VirtualRevisionTexts(self)

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self.inventories = versionedfiles.VirtualInventoryTexts(self)

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self.texts = GitTexts(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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heads = self._git.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 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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parent_map = {}

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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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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 import_revision_gist(self, source, revid, parent_lookup):

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"""Import the gist of a revision into this Git repository.

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"""

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objects = []

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rev = source.get_revision(revid)

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for sha, object, path in inventory_to_tree_and_blobs(source, None, revid):

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if path == "":

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tree_sha = sha

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objects.append((object, path))

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commit = revision_to_commit(rev, tree_sha, parent_lookup)

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objects.append((commit, None))

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self._git.object_store.add_objects(objects)

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return commit.sha().hexdigest()

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def dfetch(self, source, stop_revision):

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"""Import the gist of the ancestry of a particular revision."""

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if stop_revision is None:

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raise NotImplementedError

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revidmap = {}

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gitidmap = {}

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todo = []

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source.lock_write()

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try:

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graph = source.get_graph()

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ancestry = [x for x in source.get_ancestry(stop_revision) if x is not None]

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for revid in graph.iter_topo_order(ancestry):

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if not self.has_revision(revid):

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todo.append(revid)

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pb = ui.ui_factory.nested_progress_bar()

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try:

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for i, revid in enumerate(todo):

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pb.update("pushing revisions", i, len(todo))

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git_commit = self.import_revision_gist(source, revid, gitidmap.__getitem__)

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gitidmap[revid] = git_commit

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git_revid = self.get_mapping().revision_id_foreign_to_bzr(git_commit)

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revidmap[revid] = git_revid

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finally:

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pb.finished()

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source.fetch(self, revision_id=revidmap[stop_revision])

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finally:

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source.unlock()

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return revidmap

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return False

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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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param = None

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git_graph = self._git.get_revision_graph(param)

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# print "fetched 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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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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git_graph = self._git.get_revision_graph(revision_ids)

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# print "fetched revision graph (ghosts):", 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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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_ancestry(self, revision_id):

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param = [ids.convert_revision_id_bzr_to_git(revision_id)]

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git_ancestry = self._git.get_ancestry(param)

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# print "fetched ancestry:", param

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return [None] + [

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ids.convert_revision_id_git_to_bzr(git_id)

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for git_id in git_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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if revision_id in self._revision_cache:

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return self._revision_cache[revision_id]

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git_commit_id = ids.convert_revision_id_bzr_to_git(revision_id)

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raw = self._git.rev_list([git_commit_id], max_count=1, header=True)

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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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revision = self._parse_rev(raw)

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self._revision_cache[revision_id] = revision

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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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except 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 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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# XXX: That should not be needed, but current revision serializers do

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# not know how how to handle text that is illegal in xml. Note: when

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# this is fixed, we will need to rev up the revision namespace when

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# removing the escaping code. -- David Allouche 2007-12-30

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rev.message = escape_for_xml(rev.message)

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rev.committer = escape_for_xml(rev.committer)

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rev.properties['author'] = escape_for_xml(rev.properties['author'])

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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 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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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 _fetch_blob(self, git_id):

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lines = self._git.cat_file('blob', git_id)

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# print "fetched blob:", git_id

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if self._building_inventory is not None:

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self._building_inventory.git_file_data[git_id] = lines

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return lines

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def _get_blob(self, git_id):

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try:

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return self._blob_cache[git_id]

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except KeyError:

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return self._fetch_blob(git_id)

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def _get_blob_caching(self, git_id):

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try:

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return self._blob_cache[git_id]

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except KeyError:

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lines = self._fetch_blob(git_id)

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self._blob_cache[git_id] = lines

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return lines

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def _get_blob_info(self, git_id):

278

try:

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return self._blob_info_cache[git_id]

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except KeyError:

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lines = self._get_blob(git_id)

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size = sum(len(line) for line in lines)

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sha1 = osutils.sha_strings(lines)

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self._blob_info_cache[git_id] = (size, sha1)

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return size, sha1

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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, progress=None):

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return self._git.fetch_objects(determine_wants, graph_walker, progress)

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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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return inventory.Inventory(

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revision_id=revision_id, root_id=None)

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# First pass at building the inventory. We need this one to get the

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# git ids, so we do not have to cache the entire tree text. Ideally,

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# this should be all we need to do.

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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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# print "fetched inventory:", git_commit

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inv = self._parse_inventory(revision_id, git_inventory)

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# Second pass at building the inventory. There we retrieve additional

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# data that bzrlib requires: text sizes, sha1s, symlink targets and

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# revisions that introduced inventory entries

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self._building_inventory = inv

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self._building_inventory.git_file_data = {}

307

for file_id in sorted(inv.git_ids.iterkeys()):

308

git_id = inv.git_ids[file_id]

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entry = inv[file_id]

310

self._set_entry_text_info(inv, entry, git_id)

311

for file_id in sorted(inv.git_ids.iterkeys()):

312

git_id = inv.git_ids[file_id]

313

entry = inv[file_id]

314

path = inv.id2path(file_id)

315

self._set_entry_revision(entry, revision_id, path, git_id)

316

317

# At this point the entry_revision table is fully populated for this

318

# revision. So record that we have inventory data for this revision.

319

self.cachedb.execute(

320

"insert or ignore into inventory (revid) values (?)",

321

(revision_id,))

322

self.cachedb.commit()

323

self._building_inventory = None

324

return inv

325

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@classmethod

327

def _parse_inventory(klass, revid, git_inv):

328

# For now, git inventory do not have root ids. It is not clear that we

329

# can reliably support root ids. -- David Allouche 2007-12-28

330

inv = inventory.Inventory(revision_id=revid)

331

inv.git_ids = {}

332

for perms, git_kind, git_id, path in git_inv:

333

text_sha1 = None

334

executable = False

335

if git_kind == 'blob':

336

if perms[1] == '0':

337

kind = 'file'

338

executable = bool(int(perms[-3:], 8) & 0111)

339

elif perms[1] == '2':

340

kind = 'symlink'

341

else:

342

raise AssertionError(

343

"Unknown blob kind, perms=%r." % (perms,))

344

elif git_kind == 'tree':

345

kind = 'directory'

346

else:

347

raise AssertionError(

348

"Unknown git entry kind: %r" % (git_kind,))

349

# XXX: Maybe the file id should be prefixed by file kind, so when

350

# the kind of path changes, the id changes too.

351

# -- David Allouche 2007-12-28.

352

file_id = escape_file_id(path.encode('utf-8'))

353

entry = inv.add_path(path, kind, file_id=file_id)

354

entry.executable = executable

355

inv.git_ids[file_id] = git_id

356

inv.root.revision = revid

357

return inv

358

359

def _set_entry_text_info(self, inv, entry, git_id):

360

if entry.kind == 'directory':

361

return

362

size, sha1 = self._get_blob_info(git_id)

363

entry.text_size = size

364

entry.text_sha1 = sha1

365

if entry.kind == 'symlink':

366

lines = self._get_blob_caching(git_id)

367

entry.symlink_target = ''.join(lines)

368

369

def _get_file_revision(self, revision_id, path):

370

lines = self._git.rev_list(

371

[ids.convert_revision_id_bzr_to_git(revision_id)],

372

max_count=1, topo_order=True, paths=[path])

373

[line] = lines

374

result = ids.convert_revision_id_git_to_bzr(line[:-1])

375

# print "fetched file revision", line[:-1], path

376

return result

377

378

def _get_entry_revision_from_db(self, revid, path, git_id, executable):

379

result = self.cachedb.execute(

380

"select revision from entry_revision where"

381

" inventory=? and path=? and gitid=? and executable=?",

382

(revid, path, git_id, executable)).fetchone()

383

if result is None:

384

return None

385

[revision] = result

386

return revision

387

388

def _set_entry_revision_in_db(self, revid, path, git_id, executable, revision):

389

self.cachedb.execute(

390

"insert into entry_revision"

391

" (inventory, path, gitid, executable, revision)"

392

" values (?, ?, ?, ?, ?)",

393

(revid, path, git_id, executable, revision))

394

395

def _all_inventories_in_db(self, revids):

396

for revid in revids:

397

result = self.cachedb.execute(

398

"select count(*) from inventory where revid = ?",

399

(revid,)).fetchone()

400

if result is None:

401

return False

402

return True

403

404

def _set_entry_revision(self, entry, revid, path, git_id):

405

# If a revision is in the cache, we assume it contains entries for the

406

# whole inventory. So if all parent revisions are in the cache, but no

407

# parent entry is present, then the entry revision is the current

408

# revision. That amortizes the number of _get_file_revision calls for

409

# large pulls to a "small number".

410

entry_rev = self._get_entry_revision_from_db(

411

revid, path, git_id, entry.executable)

412

if entry_rev is not None:

413

entry.revision = entry_rev

414

return

415

416

revision = self.get_revision(revid)

417

for parent_id in revision.parent_ids:

418

entry_rev = self._get_entry_revision_from_db(

419

parent_id, path, git_id, entry.executable)

420

if entry_rev is not None:

421

break

422

else:

423

if self._all_inventories_in_db(revision.parent_ids):

424

entry_rev = revid

425

else:

426

entry_rev = self._get_file_revision(revid, path)

427

self._set_entry_revision_in_db(

428

revid, path, git_id, entry.executable, entry_rev)

429

#self.cachedb.commit()

430

entry.revision = entry_rev

431

432

433

def escape_file_id(file_id):

434

return file_id.replace('_', '__').replace(' ', '_s')

435

436

437

def escape_for_xml(message):

438

"""Replace xml-incompatible control characters."""

439

# Copied from _escape_commit_message from bzr-svn.

440

# -- David Allouche 2007-12-29.

441

if message is None:

442

return None

443

import re

444

# FIXME: RBC 20060419 this should be done by the revision

445

# serialiser not by commit. Then we can also add an unescaper

446

# in the deserializer and start roundtripping revision messages

447

# precisely. See repository_implementations/test_repository.py

448

449

# Python strings can include characters that can't be

450

# represented in well-formed XML; escape characters that

451

# aren't listed in the XML specification

452

# (http://www.w3.org/TR/REC-xml/#NT-Char).

453

message, _ = re.subn(

454

u'[^\x09\x0A\x0D\u0020-\uD7FF\uE000-\uFFFD]+',

455

lambda match: match.group(0).encode('unicode_escape'),

456

message)

457

return message

267

458

268

459

269

460

class GitRevisionTree(revisiontree.RevisionTree):

270

461

271

462

def __init__(self, repository, revision_id):

463

if revision_id is None:

464

revision_id = revision.NULL_REVISION

465

self._inventory = repository.get_inventory(revision_id)

272

466

self._repository = repository

273

self.revision_id = revision_id

274

assert isinstance(revision_id, str)

275

git_id, self.mapping = repository.lookup_git_revid(revision_id)

276

try:

277

commit = repository._git.commit(git_id)

278

except KeyError, r:

279

raise errors.NoSuchRevision(repository, revision_id)

280

self.tree = commit.tree

281

self._inventory = inventory.Inventory(revision_id=revision_id)

282

self._inventory.root.revision = revision_id

283

self._build_inventory(self.tree, self._inventory.root, "")

284

285

def get_revision_id(self):

286

return self.revision_id

287

288

def get_file_text(self, file_id):

467

self._revision_id = revision_id

468

469

def get_file_lines(self, file_id):

289

470

entry = self._inventory[file_id]

290

if entry.kind == 'directory': return ""

291

return self._repository._git.get_blob(entry.text_id).data

292

293

def _build_inventory(self, tree_id, ie, path):

294

assert isinstance(path, str)

295

tree = self._repository._git.tree(tree_id)

296

for mode, name, hexsha in tree.entries():

297

basename = name.decode("utf-8")

298

if path == "":

299

child_path = name

300

else:

301

child_path = urlutils.join(path, name)

302

file_id = self.mapping.generate_file_id(child_path)

303

entry_kind = (mode & 0700000) / 0100000

304

if entry_kind == 0:

305

child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)

306

elif entry_kind == 1:

307

file_kind = (mode & 070000) / 010000

308

b = self._repository._git.get_blob(hexsha)

309

if file_kind == 0:

310

child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)

311

child_ie.text_sha1 = osutils.sha_string(b.data)

312

elif file_kind == 2:

313

child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)

314

child_ie.text_sha1 = osutils.sha_string("")

315

else:

316

raise AssertionError(

317

"Unknown file kind, perms=%o." % (mode,))

318

child_ie.text_id = b.id

319

child_ie.text_size = len(b.data)

320

else:

321

raise AssertionError(

322

"Unknown blob kind, perms=%r." % (mode,))

323

fs_mode = mode & 0777

324

child_ie.executable = bool(fs_mode & 0111)

325

child_ie.revision = self.revision_id

326

self._inventory.add(child_ie)

327

if entry_kind == 0:

328

self._build_inventory(hexsha, child_ie, child_path)

471

if entry.kind == 'directory': return []

472

git_id = self._inventory.git_ids[file_id]

473

if git_id in self._inventory.git_file_data:

474

return self._inventory.git_file_data[git_id]

475

return self._repository._get_blob(git_id)

329

476

330

477

331

478

class GitFormat(object):

332

479

333

480

supports_tree_reference = False

334

rich_root_data = True

335

336

def get_format_description(self):

337

return "Git Repository"

338

339

def initialize(self, url, shared=False, _internal=False):

340

raise bzr_errors.UninitializableFormat(self)

341

342

def check_conversion_target(self, target_repo_format):

343

return target_repo_format.rich_root_data