Limnoria/plugins/Observer.py

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###
# Copyright (c) 2004, Jeremiah Fincher
# 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.
###
"""
A module to observe things in the channel and call commands based on what is
seen.
"""
__revision__ = "$Id$"
__author__ = ''
import supybot.plugins as plugins
import random
import supybot.conf as conf
import supybot.utils as utils
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from supybot.commands import *
import supybot.registry as registry
import supybot.callbacks as callbacks
def configure(advanced):
# This will be called by setup.py to configure this module. Advanced is
# a bool that specifies whether the user identified himself as an advanced
# user or not. You should effect your configuration by manipulating the
# registry as appropriate.
from supybot.questions import expect, anything, something, yn
conf.registerPlugin('Observer', True)
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class Observers(registry.SpaceSeparatedListOfStrings):
List = callbacks.CanonicalNameSet
class ActiveObservers(registry.SpaceSeparatedListOfStrings):
List = callbacks.CanonicalNameSet
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conf.registerPlugin('Observer')
conf.registerGlobalValue(conf.supybot.plugins.Observer, 'observers',
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Observers([], """Determines what observers are available.""",
orderAlphabetically=True))
conf.registerChannelValue(conf.supybot.plugins.Observer.observers, 'active',
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ActiveObservers([], """Determines what observers are
active on a channel."""))
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def registerObserver(name, regexpString='',
commandString='', probability=None):
g = conf.registerGlobalValue(conf.supybot.plugins.Observer.observers,
name, registry.Regexp(regexpString, """Determines what regexp must
match for this observer to be executed."""))
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if regexpString:
g.set(regexpString) # This is in case it's been registered.
conf.registerGlobalValue(g, 'command', registry.String('', """Determines
what command will be run when this observer is executed."""))
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if commandString:
g.command.setValue(commandString)
conf.registerGlobalValue(g, 'probability',
registry.Probability(1.0, """ Determines what the probability
of executing this observer is if it matches."""))
if probability is not None:
g.probability.setValue(probability)
conf.supybot.plugins.Observer.observers().add(name)
return g
def unregisterObserver(name):
g = conf.supybot.plugins.Observer.observers
g.unregister(name)
g().remove(name)
if name in g.active():
g = g.active().remove(name)
for (_, ga) in g.active.getValues(getChildren=True):
if name in ga():
ga().remove(name)
def getObserver(irc, msg, args, state):
if args[0] != 'active' and registry.isValidRegistryName(args[0]):
state.args.append(args.pop(0))
else:
irc.errorInvalid('Observer name',
s='Please be sure there are no spaces in the name.')
addConverter('observer', getObserver)
class Observer(callbacks.Privmsg):
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commandCalled = False
def __init__(self):
self.__parent = super(Observer, self)
self.__parent.__init__()
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for name in self.registryValue('observers'):
registerObserver(name)
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def callCommand(self, *args, **kwargs):
self.commandCalled = True
self.__parent.callCommand(*args, **kwargs)
def doPrivmsg(self, irc, msg):
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if self.commandCalled:
self.commandCalled = False
return
channel = msg.args[0]
observers = self.registryValue('observers')
active = self.registryValue('observers.active', channel)
for name in active:
if name not in observers:
self.log.error('Active observers for %s include an '
'invalid observer: %s.', channel, name)
continue
observer = self.registryValue('observers.%s' % name, value=False)
probability = observer.probability()
if random.random() > probability:
continue
r = observer() # The regexp.
m = r.search(msg.args[1])
if m is not None:
command = observer.command()
groups = filter(None, list(m.groups()))
groups.insert(0, m.group(0))
for (i, group) in enumerate(groups):
command = command.replace('$%s' % i, group)
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tokens = callbacks.tokenize(command, channel=channel)
self.Proxy(irc, msg, tokens)
def list(self, irc, msg, args, channel):
"""[<channel>]
Lists the currently available observers. If <channel> is given,
returns the currently active observers on <channel>.
"""
if channel:
# We don't use getChannel here because we don't want it to
# automatically pick the channel if the message is sent in
# the channel itself.
if not irc.isChannel(channel):
raise callbacks.ArgumentError
observers = self.registryValue('observers.active', channel)
# We don't sort because order matters.
else:
observers = self.registryValue('observers')
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observers = sorted(observers, key=str.lower)
if observers:
irc.reply(utils.commaAndify(observers))
else:
irc.reply('There were no relevant observers.')
list = wrap(list, [additional('something')])
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def enable(self, irc, msg, args, channel, name):
"""[<channel>] <name>
Enables the observer <name> in <channel>. <channel> is only
necessary if the message isn't sent in the channel itself.
"""
if name not in self.registryValue('observers'):
irc.error('There is no observer %s.' % name, Raise=True)
self.registryValue('observers.active', channel).add(name)
irc.replySuccess()
enable = wrap(enable, [('checkChannelCapability', 'op'), 'observer'])
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def disable(self, irc, msg, args, channel, name):
"""[<channel>] <name>
Disables the observer <name> in <channel>. <channel> is only
necessary if the message isn't sent in the channel itself.
"""
try:
self.registryValue('observers.active', channel).remove(name)
irc.replySuccess()
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except (KeyError, ValueError):
irc.error('The observer %s was not active on %s.' % (name,channel))
disable = wrap(disable, [('checkChannelCapability', 'op'), 'observer'])
def info(self, irc, msg, args, channel, name):
"""[<channel>] <name>
Returns the relevant information on the observer specified by <name>.
<channel> is only necessary if the message isn't sent in the channel
itself.
"""
if name not in self.registryValue('observers'):
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irc.error('That\'s not a valid observer.', Raise=True)
g = self.registryValue('observers.%s' % name, value=False)
command = g.command()
probability = g.probability()
if name in self.registryValue('observers.active', channel):
active = 'active'
else:
active = 'inactive'
irc.reply('%s matches the regular expression %s and '
'runs the command <<%s>> with a probability of %s. '
'Currently %s.' %
(name, g, command, probability, active))
info = wrap(info, ['channel', 'observer'])
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def add(self, irc, msg, args, name, probability, regexp, command):
"""<name> [<probability>] <regexp> <command>
Calls <command> when <regexp> matches a given message. Before
being called, <command> has the standard substitute applied to it,
as well as having $1, $2, etc. replaced by the appropriate groups
of the regexp. If <probability> is not given, it defaults to 1;
otherwise it should be a floating point probability that the observer
will execute if it matches.
"""
registerObserver(name, regexp, command, probability)
irc.replySuccess()
add = wrap(add, ['admin', 'observer',
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optional('float', 1.0),
('regexpMatcher', False),
'text'])
def remove(self, irc, msg, args, name):
"""<name>
Removes the observer <name>.
"""
try:
unregisterObserver(name)
irc.replySuccess()
except KeyError:
irc.error('That observer does not exist.')
remove = wrap(remove, ['admin', 'observer'])
Class = Observer
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