added renderNamespace() helper

expressjs · Apr 7, 2011 · 7dad7a3 · 7dad7a3
1 parent 1a1a29e
commit 7dad7a3
Showing 1 changed file with 25 additions and 0 deletions.
diff --git a/lib/express-expose.js b/lib/express-expose.js
@@ -100,6 +100,31 @@ HTTPSServer.prototype.renderExposedJavaScript = function(name){
   }).join('\n\n');
 };
 
+/**
+ * Render a namespace from the given `str`.
+ *
+ * Examples:
+ *
+ *    renderNamespace('foo.bar.baz');
+ *
+ *    var foo = foo || {};
+ *    foo.bar = foo.bar || {};
+ *    foo.bar.baz = foo.bar.baz || {};
+ *
+ * @param {String} str
+ * @return {String}
+ * @api private
+ */
+
+function renderNamespace(str){
+  var parts = [];
+  return str.split('.').map(function(part, i){
+    parts.push(part);
+    part = parts.join('.');
+    return (i ? '' : 'var ') + part + ' = ' + part + ' || {};';
+  }).join('\n');
+};
+
 /**
  * Return a string representation of `obj`.
  *