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Limnoria/examples/Random.py

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#!/usr/bin/env python
###
# Copyright (c) 2002, 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.
###
"""
Lots of stuff relating to random numbers.
"""
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import supybot.plugins as plugins
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import random
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import supybot.conf as conf
import supybot.utils as utils
import supybot.ircmsgs as ircmsgs
import supybot.ircutils as ircutils
import supybot.privmsgs as privmsgs
import supybot.registry as registry
import supybot.callbacks as callbacks
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def configure(advanced):
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from supybot.questions import expect, anything, something, yn
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conf.registerPlugin('Random', True)
if yn('Do you want to specify a seed to be used for the RNG'):
seed = something('What seed? It must be an integer or long.')
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while not seed.isdigit():
print 'That\'s not a valid seed.'
seed = something('What seed?')
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conf.supybot.plugins.Random.seed.setValue(seed)
class Seed(registry.Value):
def set(self, s):
try:
self.setValue(long(s))
except ValueError:
raise registry.InvalidRegistryValue, 'Value must be an integer.'
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conf.registerPlugin('Random')
conf.registerGlobalValue(conf.supybot.plugins.Random, 'seed', Seed(0, """
Sets the seed of the random number generator. The seen must be a valid
Python integer or long."""))
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class Random(callbacks.Privmsg):
rng = random.Random()
def random(self, irc, msg, args):
"""takes no arguments
Returns the next random number from the random number
generator.
"""
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irc.reply(str(self.rng.random()))
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def seed(self, irc, msg, args):
"""<seed>
Sets the seed of the random number generator. <seed> must be an int
or a long.
"""
seed = privmsgs.getArgs(args)
try:
seed = long(seed)
except ValueError:
# It wasn't a valid long!
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irc.error('<seed> must be a valid int or long.')
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return
self.rng.seed(seed)
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irc.replySuccess()
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def range(self, irc, msg, args):
"""<start> <end>
Returns a number between <start> and <end>, inclusive (i.e., the number
can be either of the endpoints.
"""
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(start, end) = privmsgs.getArgs(args, required=2)
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try:
end = int(end)
start = int(start)
except ValueError:
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irc.error('<start> and <end> must both be integers.')
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return
# .randrange() doesn't include the endpoint, so we use end+1.
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irc.reply(str(self.rng.randrange(start, end+1)))
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def sample(self, irc, msg, args):
"""<number of items> [<text> ...]
Returns a sample of the <number of items> taken from the remaining
arguments. Obviously <number of items> must be less than the number
of arguments given.
"""
try:
n = int(args.pop(0))
except IndexError: # raised by .pop(0)
raise callbacks.ArgumentError
except ValueError:
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irc.error('<number of items> must be an integer.')
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return
if n > len(args):
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irc.error('<number of items> must be less than the number '
'of arguments.')
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return
sample = self.rng.sample(args, n)
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irc.reply(utils.commaAndify(map(repr, sample)))
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def diceroll(self, irc, msg, args):
"""[<number of sides>]
Rolls a die with <number of sides> sides. The default number of
sides is 6.
"""
try:
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n = privmsgs.getArgs(args, required=0, optional=1)
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if not n:
n = 6
n = int(n)
except ValueError:
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irc.error('Dice have integer numbers of sides. Use one.')
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return
s = 'rolls a %s' % self.rng.randrange(1, n)
irc.queueMsg(ircmsgs.action(ircutils.replyTo(msg), s))
raise callbacks.CannotNest
Class = Random
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