mercurial/node.py
author Augie Fackler <augie@google.com>
Wed, 25 Apr 2018 13:18:51 -0400
branchstable
changeset 37821 b56e2c137d7b
parent 37448 d7114f883505
child 39145 b623c7b23695
permissions -rw-r--r--
tests: update no-zstd branch of test-treediscovery.t as in 330ada7e8ea5 This side of the test got overlooked. We should probably consider having a way to run some of our tests through a "no-zstd" case just like we run some things through a "no-obsmarkers" case, but that's not an appropriate thing for stable. Differential Revision: https://phab.mercurial-scm.org/D3430

# 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
# Adapt to Python 3 API changes. If this ends up showing up in
# profiles, we can use this version only on Python 3, and forward
# binascii.unhexlify like we used to on Python 2.
def bin(s):
    try:
        return binascii.unhexlify(s)
    except binascii.Error as e:
        raise TypeError(e)

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'

wdirfilenodeids = {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
wdirhex = hex(wdirid)

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