Better Emoticons Formatter plugin for Talkerapp

plugin.betterEmoticonsFormatter.js

// https://cheeaun.talkerapp.com/plugins/10

var path = '/images/icons/';

// 1. For humans
var emoticons = {
	evil: {
		image: 'smiley-evil.png',
		text: '>:-) >:)'
	},
	laughing: {
		image: 'smiley-lol.png',
		text: ':-)) :))'
	},
	smiling: {
		image: 'smiley.png',
		text: ':-) :)'
	},
	grin: {
		image: 'smiley-grin.png',
		text: ':-D :D'
	},
	angry: {
		image: 'smiley-mad.png',
		text: 'X( X-('
	},
	sad: {
		image: 'smiley-sad.png',
		text: ':( :-('
	},
	cry: {
		image: 'smiley-cry.png',
		text: ';( ;-('
	},
	cool: {
		image: 'smiley-cool.png',
		text: 'B) B-) 8) 8-)'
	},
	confused: {
		image: 'smiley-confuse.png',
		text: ':S :-S'
	},
	shocked: {
		image: 'smiley-eek.png',
		text: ':O :-O'
	},
	razz: {
		image: 'smiley-razz.png',
		text: ':P :-P'
	}
};

// 2. For regex
var emoticonsText = $.trim(_.map(emoticons, function(val){
	return val.text + ' ';
}).join('')).split(' ').join('|').replace(/([\(\)])/g, '\\$1');
var emoticonsRegex1 = new RegExp('(^|\\B)(' + emoticonsText + ')(\\s|$)', 'g');
var emoticonsRegex2 = new RegExp('(^|\\B)\\u2009\\u2009(' + emoticonsText + ')\\u2009\\u2009(\\s|$)', 'g');

// 3. For replacing convenience
var emoticonsImage = {};
_.each(emoticons, function(val){
	var image = val.image;
	_.each(val.text.split(' '), function(t){
		emoticonsImage[t] = image;
	});
});

var emoticonify = function(el){
	var childNodes = el.childNodes;
	var l = childNodes.length;
	if (!l) return;
	for (var i=0; i<l; i++){
		var node = childNodes[i];
		var type = node.nodeType;
		if (type == 3){
			var text = node.data;
			text = text.replace(emoticonsRegex1, '$1\u2009\u2009$2\u2009\u2009$3');
			node.data = text;
		} else if (type == 1 && !/^pre|a|script|embed|object|img$/gi.test(node.tagName)){
			emoticonify(node);
		}
	}
	el = $(el);
	var html = el.html();
	if (!emoticonsRegex2.test(html)) return;
	html = html.replace(emoticonsRegex2, function(a, b, c, d){
		return b + '<img src="' + path + emoticonsImage[c] + '" alt="' + c + '">' + d;
	});
	el.html(html);
};

plugin.onMessageInsertion = function(event){
	var lastIns = Talker.getLastInsertion();
	lastIns.each(function(i, el){
		emoticonify(el);
	});
}