mercurial/node.py
author Yuya Nishihara <yuya@tcha.org>
Sun, 14 May 2017 15:41:27 +0900
changeset 32340 9c023179e8d0
parent 32291 bd872f64a8ba
child 32684 af854b1b36f8
permissions -rw-r--r--
error: add hint to ProgrammingError As the hint isn't shown by the default exception handler, we need to print it manually. I've copied the "** " style from _exceptionwarning().

# 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.

from __future__ import absolute_import

import binascii

# This ugly style has a noticeable effect in manifest parsing
hex = binascii.hexlify
bin = binascii.unhexlify

nullrev = -1
nullid = b"\0" * 20
nullhex = hex(nullid)

# Phony node value to stand-in for new files in some uses of
# manifests.
newnodeid = '!' * 20
addednodeid = ('0' * 15) + 'added'
modifiednodeid = ('0' * 12) + 'modified'

wdirnodes = {newnodeid, addednodeid, modifiednodeid}

# pseudo identifiers for working directory
# (they are experimental, so don't add too many dependencies on them)
wdirrev = 0x7fffffff
wdirid = b"\xff" * 20

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