view mercurial/node.py @ 17964:2c63896783e3 stable

hooks: be even more forgiven of non-fd descriptors (issue3711)

Looks like there are instances where sys.stdout/stderr contain file
handles that are invalid. We should be tolerant of this for hook I/O
redirection, as our primary concern is not garbling our own output stream.

# node.py - basic nodeid manipulation for mercurial
#
# Copyright 2005, 2006 Matt Mackall <[e-mail]>
#
# 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])