/brz/remove-bazaar

# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

from dulwich.object_store import (

    tree_lookup_path,

    )

from dulwich.objects import (

    Blob,

    Commit,

    Tree,

    )

from bzrlib.versionedfile import (

    AbsentContentFactory,

    FulltextContentFactory,

    VersionedFiles,

    )

class GitRevisions(VersionedFiles):

    def __init__(self, repository, object_store):

        self.repository = repository

        self.object_store = object_store

    def check(self, progressbar=None):

        return True

    def iterkeys(self):

        for sha in self.object_store:

            if type(sha) == Commit:

                yield (sha,)

    def keys(self):

        return list(self.iterkeys())

    def add_mpdiffs(self, records):

        raise NotImplementedError(self.add_mpdiffs)

    def get_record_stream(self, keys, ordering, include_delta_closure):

        for key in keys:

            (revid,) = key

            (commit_id, mapping) = self.repository.lookup_bzr_revision_id(revid)

            try:

                commit = self.object_store[commit_id]

            except KeyError:

                yield AbsentContentFactory(key)

            else:

                yield FulltextContentFactory(key, 

                    tuple([(self.repository.lookup_foreign_revision_id(p, mapping),) for p in commit.parents]), None, 

                    commit.as_raw_string())

    def get_parent_map(self, keys):

        ret = {}

        for (revid,) in keys:

            (commit_id, mapping) = self.repository.lookup_bzr_revision_id(revid)

            try:

                ret[(revid,)] = [(self.repository.lookup_foreign_revision_id(p, mapping),) for p in self.object_store[commit_id].parents]

            except KeyError:

                ret[(revid,)] = None

        return ret

class GitTexts(VersionedFiles):

    """A texts VersionedFiles instance that is backed onto a Git object store."""

    def __init__(self, repository):

        self.repository = repository

        self.object_store = self.repository._git.object_store

    def check(self, progressbar=None):

        return True

    def add_mpdiffs(self, records):

        raise NotImplementedError(self.add_mpdiffs)

    def get_record_stream(self, keys, ordering, include_delta_closure):

        for key in keys:

            (fileid, revid) = key

            (commit_id, mapping) = self.repository.lookup_bzr_revision_id(revid)

            root_tree = self.object_store[commit_id].tree

            path = mapping.parse_file_id(fileid)

            try:

                obj = tree_lookup_path(

                    self.object_store.__getitem__, root_tree, path)

                if isinstance(obj, tuple):

                    (mode, item_id) = obj

                    obj = self.object_store[item_id]

            except KeyError:

                yield AbsentContentFactory(key)

            else:

                if isinstance(obj, Tree):

                    yield FulltextContentFactory(key, None, None, "")

                elif isinstance(obj, Blob):

                    yield FulltextContentFactory(key, None, None, obj.data)

                else:

                    raise AssertionError("file text resolved to %r" % obj)

    def get_parent_map(self, keys):

        raise NotImplementedError(self.get_parent_map)