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view mercurial/node.py @ 7775:5280c39778b6

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pure/mpatch: use StringIO instead of mmap (issue1493) This is more portable than memory mapping /dev/zero: Windows obviously does not have /dev/zero and mapping /dev/zero failed on Mac OS X.
author Martin Geisler <mg@daimi.au.dk>
date Mon, 16 Feb 2009 00:09:47 +0100
parents e45fc5d03798
children 46293a0c7e9f
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"""
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, incorporated herein by reference.
"""

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])