#!/usr/bin/env python
# -*- coding: utf-8 -*-
from bzrlib.branch import Branch
from natsort import nsorted

b = Branch.open_containing('.')[0]
b.lock_read()
try:
    # Get the branch's latest revision number.
    revno = b.revno()
    # Convert said revision number into a bzr revision id.
    revision_id = b.dotted_revno_to_revision_id((revno,))
    # Get a dict of tags, with the revision id as the key.
    tags = b.tags.get_reverse_tag_dict()
    # Check if the latest
    if revision_id in tags:
        print tags[revision_id][0]
    else:
        print '%s+bzr%s' % (nsorted(b.tags.get_tag_dict().keys())[-1], revno)
finally:
    b.unlock()