topicsed irc bot

gistfile1.txt

#!/usr/bin/env node

// Download http://lvogel.free.fr/jsed/jsed.js to "sed.js" and append "module.exports = sed;" to the end of the file.

var sed = require('./sed.js');
var irc = require('node-irc');
var fs = require('fs');

var historytopic = {};
var pretopic = {};
var restore = function () {
	var data = JSON.parse(fs.readFileSync('./topicsed.json').toString('utf8'));
	historytopic = data.historytopic ? data.historytopic : {};
	pretopic = data.pretopic ? data.pretopic : {};
};
var dump = function () {
	fs.writeFileSync('./topicsed.json', JSON.stringify({'historytopic':historytopic,'pretopic':pretopic}));
};
restore();
var client = new irc.Client('wilhelm.freenode.net', 'topicsed', {
    userName: 'topicsed',
    password: '................',
    realName: 'topicsed bot by Fusl',
    port: 6667,
    debug: true,
    showErrors: false,
    autoRejoin: true,
    autoConnect: true,
    channels: ['#fnalerts', '#fuslvz'],
    secure: false,
    selfSigned: false,
    certExpired: false,
    floodProtection: true,
    floodProtectionDelay: 750,
    sasl: true,
    stripColors: false,
    channelPrefixes: '&#',
    messageSplit: 384
});
client.on('error', function (e) {
	console.log('An unexpected error occured: ', e);
});
client.on('topic', function (channel, topic, nick, message) {
	if (match = topic.match(/^: -([0-9]+)?$/)) {
		if (historytopic[channel] === undefined) {
			return;
		}
		match = Number(match[1]);
		if (isNaN(match)) {
			match = 1;
		}
		if (match > historytopic[channel].length) {
			match = historytopic[channel].length;
		}
		var topictoset = historytopic[channel].splice(historytopic[channel].length - match, 1);
		if (match === 0) {
			topictoset = pretopic[channel];
		}
		client.say('ChanServ', 'TOPIC ' + channel + ' ' + topictoset);
		return;
	}
	var aborted = false;
	var cb = function (data) {
		if (data.length && data.split(/\r?\n/).length > 1) {
			client.say('ChanServ', 'TOPIC ' + channel + ' ' + data);
		}
	}
	var stdout = function (data) {
		if (aborted) return;
		cb(data);
		aborted = true;
	};
	var stderr = function (data) {
		if (aborted) return;
		if (historytopic[channel] === undefined) {
			historytopic[channel] = [];
		}
		if (historytopic[channel][historytopic[channel].length - 1] !== pretopic[channel] && pretopic[channel] !== topic) {
			historytopic[channel].push(pretopic[channel]);
		}
		pretopic[channel] = topic;
		aborted = true;
		dump();
	};
	sed.out = stdout;
	sed.err = stderr;
	sed.compile(topic);
	if (!aborted) {
		sed.execute(pretopic[channel] ? pretopic[channel] : '');
	}
});