revlog: skip over empty revision when looking for delta base
There is no point in keeping an empty revision in the middle of a chain since
they won't contribute any data. So we filter them out when looking for a valid
base delta.
# narrowrepo.py - repository which supports narrow revlogs, lazy loading
#
# Copyright 2017 Google, Inc.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
from . import (
narrowdirstate,
narrowrevlog,
)
def wraprepo(repo):
"""Enables narrow clone functionality on a single local repository."""
class narrowrepository(repo.__class__):
def file(self, f):
fl = super(narrowrepository, self).file(f)
narrowrevlog.makenarrowfilelog(fl, self.narrowmatch())
return fl
def _makedirstate(self):
dirstate = super(narrowrepository, self)._makedirstate()
return narrowdirstate.wrapdirstate(self, dirstate)
repo.__class__ = narrowrepository