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annotate mercurial/debugcommands.py @ 30401:869d660b8669

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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.
author Gregory Szorc <gregory.szorc@gmail.com>
date Wed, 17 Aug 2016 21:07:38 -0700
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children 945f8229b30d
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30401
869d660b8669 debugcommands: introduce standalone module for debug commands
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1 # debugcommands.py - command processing for debug* commands
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2 #
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3 # Copyright 2005-2016 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from __future__ import absolute_import
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9
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10 import os
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11
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12 from .i18n import _
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13 from . import (
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14 cmdutil,
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15 commands,
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16 error,
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17 revlog,
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18 scmutil,
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19 )
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20
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21 # We reuse the command table from commands because it is easier than
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22 # teaching dispatch about multiple tables.
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23 command = cmdutil.command(commands.table)
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24
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25 @command('debugancestor', [], _('[INDEX] REV1 REV2'), optionalrepo=True)
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26 def debugancestor(ui, repo, *args):
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27 """find the ancestor revision of two revisions in a given index"""
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28 if len(args) == 3:
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29 index, rev1, rev2 = args
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30 r = revlog.revlog(scmutil.opener(os.getcwd(), audit=False), index)
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31 lookup = r.lookup
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32 elif len(args) == 2:
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33 if not repo:
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34 raise error.Abort(_('there is no Mercurial repository here '
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35 '(.hg not found)'))
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36 rev1, rev2 = args
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37 r = repo.changelog
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38 lookup = repo.lookup
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39 else:
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40 raise error.Abort(_('either two or three arguments required'))
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41 a = r.ancestor(lookup(rev1), lookup(rev2))
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42 ui.write('%d:%s\n' % (r.rev(a), hex(a)))