Mercurial > hg

view mercurial/node.py @ 24879:b3142ea2a0d4 stable

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
parsers: avoid signed integer overflow in calculation of leaf-node index If v = -INT_MAX - 1, -v would exceed INT_MAX. I don't think this would cause problems such as issue4627, but we can't blame it as a compiler bug because signed integer overflow is undefined in C.
author Yuya Nishihara <yuya@tcha.org>
date Wed, 29 Apr 2015 23:07:34 +0900
parents 25e572394f5c
children 1a5211f2f87f
line wrap: on
line source

# 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])