sapling/mercurial/debugcommands.py
Gregory Szorc f70b24b885 debugcommands: introduce standalone module for debug commands
commands.py is our largest .py file by nearly 2x. Debug commands live
in a world of their own. So let's extract them to their own module.

We start with "debugancestor."

We currently reuse the commands table with commands.py and have a hack
in dispatch.py for loading debugcommands.py. In the future, we could
potentially use a separate commands table and avoid the import of
debugcommands.py.
2016-08-17 21:07:38 -07:00

43 lines
1.3 KiB
Python

# debugcommands.py - command processing for debug* commands
#
# Copyright 2005-2016 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 os
from .i18n import _
from . import (
cmdutil,
commands,
error,
revlog,
scmutil,
)
# We reuse the command table from commands because it is easier than
# teaching dispatch about multiple tables.
command = cmdutil.command(commands.table)
@command('debugancestor', [], _('[INDEX] REV1 REV2'), optionalrepo=True)
def debugancestor(ui, repo, *args):
"""find the ancestor revision of two revisions in a given index"""
if len(args) == 3:
index, rev1, rev2 = args
r = revlog.revlog(scmutil.opener(os.getcwd(), audit=False), index)
lookup = r.lookup
elif len(args) == 2:
if not repo:
raise error.Abort(_('there is no Mercurial repository here '
'(.hg not found)'))
rev1, rev2 = args
r = repo.changelog
lookup = repo.lookup
else:
raise error.Abort(_('either two or three arguments required'))
a = r.ancestor(lookup(rev1), lookup(rev2))
ui.write('%d:%s\n' % (r.rev(a), hex(a)))