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Limnoria/plugins/Limiter/plugin.py

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###
# Copyright (c) 2004-2005, Jeremiah Fincher
# Copyright (c) 2009, James McCoy
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# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions, and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions, and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the author of this software nor the name of
# contributors to this software may be used to endorse or promote products
# derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
###
from supybot.commands import *
import supybot.ircmsgs as ircmsgs
import supybot.ircutils as ircutils
import supybot.callbacks as callbacks
from supybot.i18n import PluginInternationalization, internationalizeDocstring
_ = PluginInternationalization('Limiter')
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class Limiter(callbacks.Plugin):
"""In order to use this plugin, its config values need to be properly
setup. supybot.plugins.Limiter.enable needs to be set to True and
supybot.plugins.Limiter.{maximumExcess,minimumExcess} should be set to
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values appropriate to your channel (if the defaults aren't satisfactory).
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Once these are set, and someone enters/leaves the channel, Supybot will
start setting the proper +l modes.
"""
def _enforce(self, irc, limit):
irc.queueMsg(limit)
irc.noReply()
def _enforceLimit(self, irc, channel):
if self.registryValue('enable', channel):
maximum = self.registryValue('maximumExcess', channel)
minimum = self.registryValue('minimumExcess', channel)
assert maximum > minimum
currentUsers = len(irc.state.channels[channel].users)
currentLimit = irc.state.channels[channel].modes.get('l', 0)
if currentLimit - currentUsers < minimum:
self._enforce(irc, ircmsgs.limit(channel,currentUsers+maximum))
elif currentLimit - currentUsers > maximum:
self._enforce(irc, ircmsgs.limit(channel,currentUsers+minimum))
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def doJoin(self, irc, msg):
if not ircutils.strEqual(msg.nick, irc.nick):
irc = callbacks.SimpleProxy(irc, msg)
self._enforceLimit(irc, msg.args[0])
doPart = doJoin
doKick = doJoin
def doQuit(self, irc, msg):
for channel in irc.state.channels:
self._enforceLimit(irc, channel)
Limiter = internationalizeDocstring(Limiter)
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Class = Limiter
# vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79: