dirstate: speed up read and write
read:
- single call to len(st)
- fewer assignments for position tracking
- don't split apart tuple from unpack
- use a literal for the unpack spec
write:
- localize variables and functions
- avoid copied function call
- use % for string concatenation
"""
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])