Autolink.Filter.js

define(['angular'], function(angular){

	/**
	 * Converts any links inside the passed in text parameter into HTML links.
	 */
	angular.module('Filters')
		.filter('Autolink', function(){

			var urlPattern = /(http|ftp|https):\/\/[\w-]+(\.[\w-]+)+([\w.,@?^=%&:\/~+#-]*[\w@?^=%&\/~+#-])?/gi;

			var normalize = function(arr){
				var result = {};
				for (var i = 0, l = arr.length; i < l; i++) {
					if (!result.hasOwnProperty(arr[i])) {
						result[arr[i]] = arr[i];
					}
				}
				return result;
			};

			return function(text, target){
				angular.forEach(normalize(text.match(urlPattern)), function(url) {           
					text = text.replace(new RegExp(url, 'g'), '<a target="' + target + '" href="'+ url + '">' + url +'</a>');
				});
				return text;        
			};

		});

});