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Limnoria/plugins/Topic.py

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#!/usr/bin/env python
###
# Copyright (c) 2002-2004, Jeremiah Fincher
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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.
###
"""
Provides commands for manipulating channel topics.
"""
import supybot
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__revision__ = "$Id$"
__author__ = supybot.authors.jemfinch
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import supybot.plugins as plugins
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import re
import random
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import supybot.conf as conf
import supybot.utils as utils
import supybot.ircdb as ircdb
import supybot.ircmsgs as ircmsgs
import supybot.plugins as plugins
import supybot.ircutils as ircutils
import supybot.privmsgs as privmsgs
import supybot.registry as registry
import supybot.callbacks as callbacks
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class TopicFormat(registry.String):
"Value must include $topic, otherwise the actual topic would be left out."
def setValue(self, v):
if '$topic' in v or '${topic}' in v:
registry.String.setValue(self, v)
else:
self.error()
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conf.registerPlugin('Topic')
conf.registerChannelValue(conf.supybot.plugins.Topic, 'separator',
registry.StringSurroundedBySpaces(' || ', """Determines what separator is
used between individually added topics in the channel topic."""))
conf.registerChannelValue(conf.supybot.plugins.Topic, 'format',
TopicFormat('$topic ($nick)', """Determines what format is used to add
topics in the topic. All the standard substitutes apply, in addiction to
"$topic" for the topic itself."""))
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conf.registerChannelValue(conf.supybot.plugins.Topic, 'recognizeTopiclen',
registry.Boolean(True, """Determines whether the bot will recognize the
TOPICLEN value sent to it by the server and thus refuse to send TOPICs
longer than the TOPICLEN. These topics are likely to be truncated by the
server anyway, so this defaults to True."""))
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conf.registerChannelValue(conf.supybot.plugins.Topic, 'default',
registry.String('', """Determines what the default topic for the channel
is. This is used by the default command to set this topic."""))
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conf.registerGroup(conf.supybot.plugins.Topic, 'undo')
conf.registerChannelValue(conf.supybot.plugins.Topic.undo, 'max',
registry.NonNegativeInteger(10, """Determines the number of previous
topics to keep around in case the undo command is called."""))
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class Topic(callbacks.Privmsg):
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def __init__(self):
callbacks.Privmsg.__init__(self)
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self.undos = ircutils.IrcDict()
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self.redos = ircutils.IrcDict()
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self.lastTopics = ircutils.IrcDict()
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def _splitTopic(self, topic, channel):
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separator = self.registryValue('separator', channel)
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return filter(None, topic.split(separator))
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def _joinTopic(self, channel, topics):
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separator = self.registryValue('separator', channel)
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return separator.join(topics)
def _formatTopic(self, irc, msg, channel, topic):
formatter = self.registryValue('format', channel)
env = {'topic': topic}
return plugins.standardSubstitute(irc, msg, formatter, env)
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def _addUndo(self, channel, topics):
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stack = self.undos.setdefault(channel, [])
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stack.append(topics)
maxLen = self.registryValue('undo.max', channel)
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del stack[:len(stack)-maxLen]
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def _addRedo(self, channel, topics):
stack = self.redos.setdefault(channel, [])
stack.append(topics)
maxLen = self.registryValue('undo.max', channel)
del stack[:len(stack)-maxLen]
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def _getUndo(self, channel):
try:
return self.undos[channel].pop()
except (KeyError, IndexError):
return None
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def _getRedo(self, channel):
try:
return self.redos[channel].pop()
except (KeyError, IndexError):
return None
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def _sendTopics(self, irc, channel, topics, isDo=False):
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topics = [s for s in topics if s and not s.isspace()]
self.lastTopics[channel] = topics
newTopic = self._joinTopic(channel, topics)
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try:
maxLen = irc.state.supported['topiclen']
if len(newTopic) > maxLen:
if self.registryValue('recognizeTopiclen', channel):
irc.error('That topic is too long for this server '
'(maximum length: %s).' % maxLen, Raise=True)
except KeyError:
pass
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self._addUndo(channel, topics)
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if not isDo and channel in self.redos:
del self.redos[channel]
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irc.queueMsg(ircmsgs.topic(channel, newTopic))
def _canChangeTopic(self, irc, channel):
c = irc.state.channels[channel]
if irc.nick not in c.ops and 't' in c.modes:
irc.error('I can\'t change the topic, I\'m not opped and %s '
'is +t.' % channel, Raise=True)
else:
return True
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def _topicNumber(self, irc, n, topics=None, normalize=False):
try:
n = int(n)
if not n:
raise ValueError
if n > 0:
n -= 1
if topics is not None:
topics[n]
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if normalize:
assert topics, 'Can\'t normalize without topics.'
if n < 0:
n += len(topics)
return n
except (ValueError, IndexError):
irc.error('That\'s not a valid topic number.', Raise=True)
def add(self, irc, msg, args, channel, insert=False):
"""[<channel>] <topic>
Adds <topic> to the topics for <channel>. <channel> is only necessary
if the message isn't sent in the channel itself.
"""
self._canChangeTopic(irc, channel)
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topic = privmsgs.getArgs(args)
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separator = self.registryValue('separator', channel)
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if separator in topic:
s = 'You can\'t have %s in your topic' % separator
irc.error(s)
return
topics = self._splitTopic(irc.state.getTopic(channel), channel)
formattedTopic = self._formatTopic(irc, msg, channel, topic)
if insert:
topics.insert(0, formattedTopic)
else:
topics.append(formattedTopic)
self._sendTopics(irc, channel, topics)
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add = privmsgs.channel(add)
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def insert(self, irc, msg, args):
"""[<channel>] <topic>
Adds <topic> to the topics for <channel> at the beginning of the topics
currently on <channel>. <channel> is only necessary if the message
isn't sent in the channel itself.
"""
self.add(irc, msg, args, insert=True)
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def shuffle(self, irc, msg, args, channel):
"""[<channel>]
Shuffles the topics in <channel>. <channel> is only necessary if the
message isn't sent in the channel itself.
"""
self._canChangeTopic(irc, channel)
newtopic = irc.state.getTopic(channel)
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topics = self._splitTopic(irc.state.getTopic(channel), channel)
if len(topics) == 0 or len(topics) == 1:
irc.error('I can\'t shuffle 1 or fewer topics.')
return
elif len(topics) == 2:
topics.reverse()
else:
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original = topics[:]
while topics == original:
random.shuffle(topics)
self._sendTopics(irc, channel, topics)
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shuffle = privmsgs.channel(shuffle)
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def reorder(self, irc, msg, args, channel):
"""[<channel>] <number> [<number> ...]
Reorders the topics from <channel> in the order of the specified
<number> arguments. <number> is a one-based index into the topics.
<channel> is only necessary if the message isn't sent in the channel
itself.
"""
self._canChangeTopic(irc, channel)
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topics = self._splitTopic(irc.state.getTopic(channel), channel)
num = len(topics)
if num == 0 or num == 1:
irc.error('I cannot reorder 1 or fewer topics.')
return
if len(args) != num:
irc.error('All topic numbers must be specified.')
return
order = privmsgs.getArgs(args, required=num)
for i,p in enumerate(order):
order[i] = self._topicNumber(irc, p, topics=topics)
if order[i] < 0:
order[i] += num
if sorted(order) != range(num):
irc.error('Duplicate topic numbers cannot be specified.')
return
newtopics = [topics[i] for i in order]
self._sendTopics(irc, channel, newtopics)
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reorder = privmsgs.channel(reorder)
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def list(self, irc, msg, args, channel):
"""[<channel>] <number>
Returns a list of the topics in <channel>, prefixed by their indexes.
Mostly useful for topic reordering. <channel> is only necessary if the
message isn't sent in the channel itself.
"""
topics = self._splitTopic(irc.state.getTopic(channel), channel)
L = []
for (i, t) in enumerate(topics):
L.append('%s: %s' % (i+1, utils.ellipsisify(t, 30)))
s = utils.commaAndify(L)
irc.reply(s)
list = privmsgs.channel(list)
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def get(self, irc, msg, args, channel):
"""[<channel>] <number>
Returns topic number <number> from <channel>. <number> is a one-based
index into the topics. <channel> is only necessary if the message
isn't sent in the channel itself.
"""
number = privmsgs.getArgs(args)
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topics = self._splitTopic(irc.state.getTopic(channel), channel)
if topics:
number = self._topicNumber(irc, number, topics=topics)
irc.reply(topics[number])
else:
irc.error('There are no topics to get.')
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get = privmsgs.channel(get)
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def change(self, irc, msg, args, channel):
"""[<channel>] <number> <regexp>
Changes the topic number <number> on <channel> according to the regular
expression <regexp>. <number> is the one-based index into the topics;
<regexp> is a regular expression of the form
s/regexp/replacement/flags. <channel> is only necessary if the message
isn't sent in the channel itself.
"""
self._canChangeTopic(irc, channel)
(number, regexp) = privmsgs.getArgs(args, required=2)
topics = self._splitTopic(irc.state.getTopic(channel), channel)
if not topics:
irc.error('There are no topics to change.')
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return
number = self._topicNumber(irc, number, topics=topics)
try:
replacer = utils.perlReToReplacer(regexp)
except ValueError, e:
irc.error('The regexp wasn\'t valid: %s' % e)
return
topics[number] = replacer(topics[number])
self._sendTopics(irc, channel, topics)
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change = privmsgs.channel(change)
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def set(self, irc, msg, args, channel):
"""[<channel>] [<number>] <topic>
Sets the topic <number> to be <text>. If no <number> is given, this
sets the entire topic. <channel> is only necessary if the message
isn't sent in the channel itself.
"""
self._canChangeTopic(irc, channel)
(i, topic) = privmsgs.getArgs(args, optional=1)
topics = self._splitTopic(irc.state.getTopic(channel), channel)
try:
int(i) # If this isn't a number, do something else.
except ValueError:
self._sendTopics(irc, channel, [privmsgs.getArgs(args)])
return
i = self._topicNumber(irc, i, topics=topics)
topic = self._formatTopic(irc, msg, channel, topic)
topics[i] = topic
self._sendTopics(irc, channel, topics)
set = privmsgs.channel(set)
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def remove(self, irc, msg, args, channel):
"""[<channel>] <number>
Removes topic <number> from the topic for <channel> Topics are
numbered starting from 1; you can also use negative indexes to refer
to topics starting the from the end of the topic. <channel> is only
necessary if the message isn't sent in the channel itself.
"""
self._canChangeTopic(irc, channel)
i = privmsgs.getArgs(args)
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topics = self._splitTopic(irc.state.getTopic(channel), channel)
i = self._topicNumber(irc, i, topics=topics)
topic = topics.pop(i)
self._sendTopics(irc, channel, topics)
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remove = privmsgs.channel(remove)
def lock(self, irc, msg, args, channel):
"""[<channel>]
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Locks the topic (sets the mode +t) in <channel>. <channel> is only
necessary if the message isn't sent in the channel itself.
"""
if irc.nick in irc.state.channels[channel].ops:
irc.queueMsg(ircmsgs.mode(channel, '+t'))
else:
irc.error('How can I unlock the topic, I\'m not opped!')
lock = privmsgs.channel(lock)
def unlock(self, irc, msg, args, channel):
"""[<channel>]
Locks the topic (sets the mode +t) in <channel>. <channel> is only
necessary if the message isn't sent in the channel itself.
"""
if irc.nick in irc.state.channels[channel].ops:
irc.queueMsg(ircmsgs.mode(channel, '-t'))
else:
irc.error('How can I unlock the topic, I\'m not opped!')
unlock = privmsgs.channel(unlock)
def restore(self, irc, msg, args, channel):
"""[<channel>]
Restores the topic to the last topic set by the bot. <channel> is only
necessary if the message isn't sent in the channel itself.
"""
self._canChangeTopic(irc, channel)
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try:
topics = self.lastTopics[channel]
except KeyError:
irc.error('I haven\'t yet set the topic in %s.' % channel)
return
self._sendTopics(irc, channel, topics)
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restore = privmsgs.channel(restore)
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def undo(self, irc, msg, args, channel):
"""[<channel>]
Restores the topic to the one previous to the last topic command that
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set it. <channel> is only necessary if the message isn't sent in the
channel itself.
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"""
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self._addRedo(channel, self._getUndo(channel)) # current topic.
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topics = self._getUndo(channel) # This is the topic list we want.
if topics is not None:
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self._sendTopics(irc, channel, topics, isDo=True)
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else:
irc.error('There are no more undos for %s.' % channel)
undo = privmsgs.channel(undo)
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def redo(self, irc, msg, args, channel):
"""[<channel>]
Undoes the last undo. <channel> is only necessary if the message isn't
sent in the channel itself.
"""
topics = self._getRedo(channel)
if topics is not None:
self._sendTopics(irc, channel, topics, isDo=True)
else:
irc.error('There are no redos for %s.' % channel)
redo = privmsgs.channel(redo)
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def swap(self, irc, msg, args, channel):
"""[<channel>] <first topic number> <second topic number>
Swaps the order of the first topic number and the second topic number.
<channel> is only necessary if the message isn't sent in the channel
itself.
"""
self._canChangeTopic(irc, channel)
(first, second) = privmsgs.getArgs(args, required=2)
topics = self._splitTopic(irc.state.getTopic(channel), channel)
first = self._topicNumber(irc, first, topics, normalize=True)
second = self._topicNumber(irc, second, topics, normalize=True)
if first == second:
irc.error('I refuse to swap the same topic with itself.')
return
t = topics[first]
topics[first] = topics[second]
topics[second] = t
self._sendTopics(irc, channel, topics)
swap = privmsgs.channel(swap)
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def default(self, irc, msg, args, channel):
"""[<channel>]
Sets the topic in <channel> to the default topic for <channel>. The
default topic for a channel may be configured via the configuration
variable supybot.plugins.Topic.default.
"""
topic = self.registryValue('default', channel)
if topic:
self._sendTopics(irc, channel, [topic])
else:
irc.error('There is no default topic configured for %s.' % channel)
default = privmsgs.channel(default)
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Class = Topic
# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78: