Parsing Tweets with the TwitterString Class

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx" 
			   creationComplete="init()" width="300" height="100" 
			   backgroundColor="#1E1E1E" preloaderBaseColor="#989898">
 
	<fx:Script>
		<![CDATA[
			import flashx.textLayout.elements.Configuration;
			import flashx.textLayout.elements.TextFlow;
			import flashx.textLayout.conversion.TextConverter;
			import flashx.textLayout.formats.TextLayoutFormat;
			import com.fracturedvisionmedia.utils.TwitterString;
 
			private var myTxt:String = "Everyone should follow @josephlabrecque (http://bit.ly/7NkqrB) - really cool stuff and super-informative insights! #Awesome #Super #LOL";
 
			private function init():void {
				// Configure styling the TextFlow links to match richTxt
				var cfg:Configuration = TextFlow.defaultConfiguration;
				var normalTLF:TextLayoutFormat = new TextLayoutFormat(cfg.defaultLinkNormalFormat);
				normalTLF.color = 0xDCD9D9;
				cfg.defaultLinkNormalFormat = normalTLF;
				TextFlow.defaultConfiguration = cfg;
 
				// Import tweet as HTML
				richTxt.textFlow = TextConverter.importToFlow(TwitterString.instance.parseTweet(myTxt), TextConverter.TEXT_FIELD_HTML_FORMAT);
			}
		]]>
	</fx:Script>
 
	<s:RichEditableText id="richTxt" selectable="false" editable="false" right="10" top="10" bottom="10" color="#DCD9D9" left="10"/>
 
</s:Application>

package com.fracturedvisionmedia.utils {
 
	/**
	 * The TwitterString class assists with the parsing of a tweet to add hyperlinks 
	 * around Links, HashTags, and UserNames in a tweet.
	 * @author Joseph Labrecque
	 * v. 0.1.2
	 */ 
 
	public final class TwitterString {
		private static var _instance:TwitterString = new TwitterString();
 
		public function TwitterString(){
			if (_instance != null){
				throw new Error("TwitterString can only be accessed through TwitterString.instance");
			}
		}
 
		public static function get instance():TwitterString {
			return _instance;
		}
 
		public function parseTweet(t:String):String {
			var step1:String = parseHyperlinks(t);
			var step2:String = parseUsernames(step1)
			var step3:String = parseHashtags(step2)
			return step3;
		}
 
		private function parseUsernames(t:String):String {
			var result:String = t.replace(/(^|\s)#(\w+)/g, "$1#<a href='http://search.twitter.com/search?q=$2' target='_blank'>$2</a>");
			return result;
		}
 
		private function parseHashtags(t:String):String {
			var result:String = t.replace(/(^|\s)@(\w+)/g, "$1@<a href='http://www.twitter.com/$2' target='_blank'>$2</a>");
			return result;
		}
 
		private function parseHyperlinks(t:String):String {
			var urlPattern:RegExp = new RegExp("(((f|ht){1}tp://)[-a-zA-Z0-9@:%_\+.~#?&//=]+)", "g")
			var result:String = t.replace(urlPattern, "<a href='$1' target='_blank'>$1</a>");
			return result;
		}
 
	}
}