subrepo: use vfs.readdir instead of os.listdir to avoid expensive stat calls
"kind" information given from "vfs.readdir()" makes expensive stat
calls "os.path.isdir()" and "os.path.islink()" useless.
# node.py - basic nodeid manipulation for mercurial
#
# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import binascii
nullrev = -1
nullid = "\0" * 20
# This ugly style has a noticeable effect in manifest parsing
hex = binascii.hexlify
bin = binascii.unhexlify
def short(node):
return hex(node[:6])