Make the appendfile class inline-data index friendly The appendfile class needs a few changes to make it work with interleaved index files. It needs to support the tell() method, opening in a+ mode, and it needs to delay the checkinlinesize call until after the append file is written. Given that open(file, "a+") doesn't always seek to the end of the file, this adds seek operations to appendfile that understand whence args

"""
node.py - basic nodeid manipulation for mercurial

Copyright 2005 Matt Mackall <mpm@selenic.com>

This software may be used and distributed according to the terms
of the GNU General Public License, incorporated herein by reference.
"""

import binascii

nullid = "\0" * 20

def hex(node):
    return binascii.hexlify(node)

def bin(node):
    return binascii.unhexlify(node)

def short(node):
    return hex(node[:6])