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70f48203f7
Summary: This extensions prevents mercurial from being ctrl-c'ed by warning the user on the first SIGINT. The subsequent interrupts are handled normally. Test Plan: see tests (the tests are lacking the scenario of double ctrl-c - any suggestions on how to do it in nice way inside the test framework welcome) Reviewers: #sourcecontrol, durham, wez, quark, akushner, rmcelroy Subscribers: lcharignon, quark, mjpieters Differential Revision: https://phabricator.intern.facebook.com/D2936488
53 lines
1.9 KiB
Python
53 lines
1.9 KiB
Python
# nointerrupt.py - prevent mercurial from being ctrl-c'ed
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#
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# Copyright 2016 Facebook, Inc.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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import sys, signal
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from mercurial import cmdutil, commands, dispatch, extensions
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def sigintprintwarninghandlerfactory(oldsiginthandler, msg):
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def sigint(*args):
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sys.stderr.write(msg)
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signal.signal(signal.SIGINT, oldsiginthandler)
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return sigint
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def nointerruptcmd(orig, ui, options, cmd, cmdfunc):
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# bail if not in interactive terminal
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if ui.configbool('nointerrupt', 'interactiveonly', True):
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if not ui.fout.isatty() or ui.plain():
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return orig(ui, options, cmd, cmdfunc)
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cmds, _cmdtableentry = cmdutil.findcmd(cmd, commands.table)
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if isinstance(_cmdtableentry[0], dispatch.cmdalias):
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cmds.append(_cmdtableentry[0].cmdname)
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shouldpreventinterrupt = False
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for cmd in cmds:
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var = 'attend-%s' % cmd
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if ui.config('nointerrupt', var):
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shouldpreventinterrupt = ui.configbool('nointerrupt', var)
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break
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if shouldpreventinterrupt:
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oldsiginthandler = signal.getsignal(signal.SIGINT)
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try:
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msg = ui.config('nointerrupt', 'message',
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"==========================\n"
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"Interrupting Mercurial may leave your repo in a bad state.\n"
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"If you really want to interrupt your current command, press\n"
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"CTRL-C again.\n"
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"==========================\n"
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)
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signal.signal(signal.SIGINT, sigintprintwarninghandlerfactory(
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oldsiginthandler, msg))
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except AttributeError:
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pass
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return orig(ui, options, cmd, cmdfunc)
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def uisetup(ui):
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extensions.wrapfunction(dispatch, '_runcommand', nointerruptcmd)
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