/brz/remove-bazaar

# Copyright (C) 2009-2010 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

"""Support for committing in native Git working trees."""

from dulwich.index import (

    commit_tree,

    )

import stat

from bzrlib.errors import (

    RootMissing,

    )

from bzrlib.repository import (

    CommitBuilder,

    )

from dulwich.objects import (

    S_IFGITLINK,

    Blob,

    Commit,

    )

from bzrlib.plugins.git.mapping import (

    entry_mode,

    )

class GitCommitBuilder(CommitBuilder):

    """Commit builder for Git repositories."""

    supports_record_entry_contents = False

    def __init__(self, *args, **kwargs):

        super(GitCommitBuilder, self).__init__(*args, **kwargs)

        self.store = self.repository._git.object_store

        self._blobs = {}

    def record_entry_contents(self, ie, parent_invs, path, tree,

        content_summary):

        raise NotImplementedError(self.record_entry_contents)

    def record_delete(self, path, file_id):

        self._blobs[path] = None

        self._any_changes = True

    def record_iter_changes(self, workingtree, basis_revid, iter_changes):

        index = getattr(workingtree, "index", None)

        if index is not None:

            def index_sha1(path, file_id):

                return index.get_sha1(path.encode("utf-8"))

            text_sha1 = link_sha1 = index_sha1

        else:

            def link_sha1(path, file_id):

                blob = Blob()

                blob.data = workingtree.get_symlink_target(file_id)

                return blob.id

            def text_sha1(path, file_id):

                blob = Blob()

                blob.data = workingtree.get_file_text(file_id, path)

                return blob.id

        seen_root = False

        for (file_id, path, changed_content, versioned, parent, name, kind,

             executable) in iter_changes:

            if kind[1] in ("directory",):

                if kind[0] in ("file", "symlink"):

                    self.record_delete(path[0], file_id)

                if path[1] == "":

                    seen_root = True

                continue

            if path[1] is None:

                self.record_delete(path[0], file_id)

                continue

            if kind[1] == "file":

                mode = stat.S_IFREG

                sha = text_sha1(path[1], file_id)

            elif kind[1] == "symlink":

                mode = stat.S_IFLNK

                sha = link_sha1(path[1], file_id)

            elif kind[1] == "tree-reference":

                mode = S_IFGITLINK

                sha = "FIXME" # FIXME

            else:

                raise AssertionError("Unknown kind %r" % kind[1])

            if executable[1]:

                mode |= 0111

            self._any_changes = True

            self._blobs[path[1].encode("utf-8")] = (mode, sha)

            file_sha1 = workingtree.get_file_sha1(file_id, path[1])

            _, st = workingtree.get_file_with_stat(file_id, path[1])

            yield file_id, path[1], (file_sha1, st)

        if not seen_root and len(self.parents) == 0:

            raise RootMissing()

        # Fill in entries that were not changed

        basis_tree = workingtree.basis_tree()

        assert basis_tree.get_revision_id() == basis_revid, "expected %r == %r" % (

            basis_tree.get_revision_id(), basis_revid)

        for path, entry in basis_tree.iter_entries_by_dir():

            if entry.kind not in ("file", "symlink"):

                continue

            if not path in self._blobs:

                blob = Blob()

                if entry.kind == "symlink":

                    blob.data = basis_tree.get_symlink_target(entry.file_id)

                else:

                    blob.data = basis_tree.get_file_text(entry.file_id)

                self._blobs[path.encode("utf-8")] = (entry_mode(entry), blob.id)

        self.new_inventory = None

    def finish_inventory(self):

        # eliminate blobs that were removed

        for path, entry in iter(self._blobs.items()):

            if entry is None:

                del self._blobs[path]

    def _iterblobs(self):

        return ((path, sha, mode) for (path, (mode, sha)) in self._blobs.iteritems())

    def commit(self, message):

        self._validate_unicode_text(message, 'commit message')

        c = Commit()

        c.parents = [self.repository.lookup_bzr_revision_id(revid)[0] for revid in self.parents]

        c.tree = commit_tree(self.store, self._iterblobs())

        c.committer = self._committer

        c.author = self._revprops.get('author', self._committer)

        c.commit_time = int(self._timestamp)

        c.author_time = int(self._timestamp)

        c.commit_timezone = self._timezone

        c.author_timezone = self._timezone

        c.encoding = 'utf-8'

        c.message = message.encode("utf-8")

        self.store.add_object(c)

        assert len(c.id) == 40

        self._new_revision_id = self.repository.get_mapping().revision_id_foreign_to_bzr(c.id)

        self.repository.commit_write_group()

        return self._new_revision_id

    def revision_tree(self):

        return self.repository.revision_tree(self._new_revision_id)