Add octemplate jQuery plugin

core/js/octemplate.js

+/**
+ * jQuery plugin for micro templates
+ *
+ * Strings are automatically escaped, but that can be disabled by setting escapeFunction to null.
+ *
+ * Usage examples:
+ *
+ *	var str = 'Bake, uncovered, until the {greasystuff} is melted and the {pasta} is heated through, about {min} minutes.'
+ *	$(str).octemplate({greasystuff: 'cheese', pasta: 'macaroni', min: 10});
+ *
+ * 	var htmlStr = '<p>Welcome back {user}</p>';
+ *	$(htmlStr).octemplate({user: 'John Q. Public'}, {escapeFunction: null});
+ *
+ * For anything larger than one-liners, you can use a simple $.get() ajax request to get the template,
+ * or you can embed them it the page using the text/template type:
+ *
+ * <script id="contactListItemTemplate" type="text/template">
+ *	<tr class="contact" data-id="{id}">
+ *		<td class="name">
+ *			<input type="checkbox" name="id" value="{id}" /><span class="nametext">{name}</span>
+ *		</td>
+ *		<td class="email">
+ *			<a href="mailto:{email}">{email}</a>
+ *		</td>
+ *		<td class="phone">{phone}</td>
+ *	</tr>
+ * </script>
+ *
+ * var $tmpl = $('#contactListItemTemplate');
+ * var contacts = // fetched in some ajax call
+ *
+ * $.each(contacts, function(idx, contact) {
+ * 		$contactList.append(
+ * 			$tmpl.octemplate({
+ * 				id: contact.getId(),
+ * 				name: contact.getDisplayName(),
+ * 				email: contact.getPreferredEmail(),
+ * 				phone: contact.getPreferredPhone(),
+ * 			});
+ * 		);
+ * });
+ */
+(function( $ ) {
+	/**
+	* Object Template
+	* Inspired by micro templating done by e.g. underscore.js
+	*/
+	var Template = {
+		init: function(vars, options, elem) {
+			// Mix in the passed in options with the default options
+			this.vars = vars;
+			this.options = $.extend({},this.options,options);
+
+			this.elem = elem;
+			var self = this;
+
+			if(typeof this.options.escapeFunction === 'function') {
+				$.each(this.vars, function(key, val) {
+					if(typeof val === 'string') {
+						self.vars[key] = self.options.escapeFunction(val);
+					}
+				});
+			}
+
+			var _html = this._build(this.vars);
+			return $(_html);
+		},
+		// From stackoverflow.com/questions/1408289/best-way-to-do-variable-interpolation-in-javascript
+		_build: function(o){
+			var data = this.elem.attr('type') === 'text/template' ? this.elem.html() : this.elem.get(0).outerHTML;
+			try {
+				return data.replace(/{([^{}]*)}/g,
+					function (a, b) {
+						var r = o[b];
+						return typeof r === 'string' || typeof r === 'number' ? r : a;
+					}
+				);
+			} catch(e) {
+				console.error(e, 'data:', data)
+			}
+		},
+		options: {
+			escapeFunction: function(str) {return $('<i></i>').text(str).html();}
+		}
+	};
+
+	$.fn.octemplate = function(vars, options) {
+		var vars = vars ? vars : {};
+		if(this.length) {
+			var _template = Object.create(Template);
+			return _template.init(vars, options, this);
+		}
+	};
+
+})( jQuery );
+