Sammy.js: Whitespace + XSS fixes

labs/architecture-examples/sammyjs/js/lib/sammy.template.js

-(function(f){var d={};Sammy=Sammy||{};Sammy.Template=function(g,e){e||(e="template");g.helper(e,function(a,c,b){"undefined"==typeof b&&(b=a);a:{c=f.extend({},this,c);if(d[b])fn=d[b];else{if("undefined"==typeof a){a=!1;break a}fn=d[b]=new Function("obj",'var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push("'+a.replace(/[\r\t\n]/g," ").replace(/\"/g,'\\"').split("<%").join("\t").replace(/((^|%>)[^\t]*)/g,"$1\r").replace(/\t=(.*?)%>/g,'",$1,"').split("\t").join('");').split("%>").join('p.push("').split("\r").join("")+
-"\");}return p.join('');")}a="undefined"!=typeof c?fn(c):fn}return a})}})(jQuery);
\ No newline at end of file
+(function (factory) {
+  if (typeof define === 'function' && define.amd) {
+    define(['jquery', 'sammy'], factory);
+  } else {
+    (window.Sammy = window.Sammy || {}).Template = factory(window.jQuery, window.Sammy);
+  }
+}(function ($, Sammy) {
+
+  // Simple JavaScript Templating
+  // John Resig - http://ejohn.org/ - MIT Licensed
+  // adapted from: http://ejohn.org/blog/javascript-micro-templating/
+  // originally $.srender by Greg Borenstein http://ideasfordozens.com in Feb 2009
+  // modified for Sammy by Aaron Quint for caching templates by name
+  // Backport of escapeHTML from sammy.js 0.7
+  var _escapeHTML = function(s) {
+    return String(s).replace(/&(?!\w+;)/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
+  };
+
+  var srender_cache = {};
+  var srender = function(name, template, data, options) {
+    var fn, escaped_string;
+    // target is an optional element; if provided, the result will be inserted into it
+    // otherwise the result will simply be returned to the caller
+    if (srender_cache[name]) {
+      fn = srender_cache[name];
+    } else {
+      if (typeof template == 'undefined') {
+        // was a cache check, return false
+        return false;
+      }
+      // If options escape_html is false, dont escape the contents by default
+      if (options && options.escape_html === false) {
+        escaped_string = "\",$1,\"";
+      } else {
+        escaped_string = "\",h($1),\"";
+      }
+      // Generate a reusable function that will serve as a template
+      // generator (and which will be cached).
+      fn = srender_cache[name] = new Function("obj",
+      "var ___$$$___=[],print=function(){___$$$___.push.apply(___$$$___,arguments);};" +
+
+      // Introduce the data as local variables using with(){}
+      "with(obj){___$$$___.push(\"" +
+
+      // Convert the template into pure JavaScript
+      String(template)
+        .replace(/[\r\t\n]/g, " ")
+        .replace(/\"/g, '\\"')
+        .split("<%").join("\t")
+        .replace(/((^|%>)[^\t]*)/g, "$1\r")
+        .replace(/\t=(.*?)%>/g, escaped_string)
+        .replace(/\t!(.*?)%>/g, "\",$1,\"")
+        .split("\t").join("\");")
+        .split("%>").join("___$$$___.push(\"")
+        .split("\r").join("")
+        + "\");}return ___$$$___.join('');");
+    }
+
+    if (typeof data != 'undefined') {
+      return fn(data);
+    } else {
+      return fn;
+    }
+  };
+
+  // `Sammy.Template` is a simple plugin that provides a way to create
+  // and render client side templates. The rendering code is based on John Resig's
+  // quick templates and Greg Borenstien's srender plugin.
+  // This is also a great template/boilerplate for Sammy plugins.
+  //
+  // Templates use `<% %>` tags to denote embedded javascript.
+  //
+  // ### Examples
+  //
+  // Here is an example template (user.template):
+  //
+  //       // user.template
+  //       <div class="user">
+  //         <div class="user-name"><%= user.name %></div>
+  //         <% if (user.photo_url) { %>
+  //           <div class="photo"><img src="<%= user.photo_url %>" /></div>
+  //         <% } %>
+  //       </div>
+  //
+  // Given that is a publicly accesible file, you would render it like:
+  //
+  //       // app.js
+  //       $.sammy(function() {
+  //         // include the plugin
+  //         this.use('Template');
+  //
+  //         this.get('#/', function() {
+  //           // the template is rendered in the current context.
+  //           this.user = {name: 'Aaron Quint'};
+  //           // partial calls template() because of the file extension
+  //           this.partial('user.template');
+  //         })
+  //       });
+  //
+  // You can also pass a second argument to use() that will alias the template
+  // method and therefore allow you to use a different extension for template files
+  // in <tt>partial()</tt>
+  //
+  //       // alias to 'tpl'
+  //       this.use(Sammy.Template, 'tpl');
+  //
+  //       // now .tpl files will be run through srender
+  //       this.get('#/', function() {
+  //         this.partial('myfile.tpl');
+  //       });
+  //
+  // By default, the data passed into the tempalate is passed automatically passed through
+  // Sammy's `escapeHTML` method in order to prevent possible XSS attacks. This is
+  // a problem though if you're using something like `Sammy.Form` which renders HTML
+  // within the templates. You can get around this in two ways. One, you can use the
+  // `<%! %>` instead of `<%= %>`. Two, you can pass the `escape_html = false` option
+  // when interpolating, i.e:
+  //
+  //       this.get('#/', function() {
+  //         this.template('myform.tpl', {form: "<form></form>"}, {escape_html: false});
+  //       });
+  //
+  Sammy.Template = function(app, method_alias) {
+
+    // *Helper:* Uses simple templating to parse ERB like templates.
+    //
+    // ### Arguments
+    //
+    // * `template` A String template. '<% %>' tags are evaluated as Javascript and replaced with the elements in data.
+    // * `data` An Object containing the replacement values for the template.
+    //   data is extended with the <tt>EventContext</tt> allowing you to call its methods within the template.
+    // * `name` An optional String name to cache the template.
+    //
+    var template = function(template, data, name, options) {
+      // use name for caching
+      if (typeof name == 'undefined') { name = template; }
+      if (typeof options == 'undefined' && typeof name == 'object') {
+        options = name; name = template;
+      }
+      return srender(name, template, $.extend({h: _escapeHTML}, this, data), options);
+    };
+
+    // set the default method name/extension
+    if (!method_alias) { method_alias = 'template'; }
+    // create the helper at the method alias
+    app.helper(method_alias, template);
+
+  };
+
+  return Sammy.Template;
+
+}));

labs/architecture-examples/sammyjs/templates/todo.template

 <li data-type="todo" data-id="<%= id %>" class="<%= done ? 'done' : '' %>">
 <div class="todo">
 	<div class="display">
-<input class="check" type="checkbox" <%= done ? 'checked' : '' %>/>
-<span class="trashcan" data-type="todo" data-id="<%= id %>"></span>
-<span contenteditable="true" data-type="todo" data-id="<%= id %>" class="todo-item"><%= name %></span>
-</div>
+		<input class="check" type="checkbox" <%= done ? 'checked' : '' %>/>
+		<span class="trashcan" data-type="todo" data-id="<%= id %>"></span>
+		<span contenteditable="true" data-type="todo" data-id="<%= id %>" class="todo-item"><%= name %></span>
+	</div>
 </div>
 </li>
-
-