* added String.NULL as constant containing the empty string ""

* added global- and HopObject-related macros to core

core/Global.js

@@ -0,0 +1,67 @@
+/*
+ * Helma License Notice
+ *
+ * The contents of this file are subject to the Helma License
+ * Version 2.0 (the "License"). You may not use this file except in
+ * compliance with the License. A copy of the License is available at
+ * http://adele.helma.org/download/helma/license.txt
+ *
+ * Copyright 1998-2005 Helma Software. All Rights Reserved.
+ *
+ * $RCSfile: Date.js,v $
+ * $Author: czv $
+ * $Revision: 1.2 $
+ * $Date: 2006/04/24 07:02:17 $
+ */
+
+
+app.addRepository("modules/core/String.js");
+
+
+/**
+ * write out a property contained in app.properties
+ * @param Object containing the name of the property
+ */
+function property_macro(param) {
+    res.write(app.properties[param.name] || String.NULL);
+    return;
+}
+
+
+/**
+ * wrapper to output a string from within a skin
+ * just to be able to use different encodings
+ * @param Object containing the string as text property
+ */
+function write_macro(param) {
+    res.write(param.text || String.NULL);
+    return;
+}
+
+
+/**
+ * renders the current datetime
+ * @param Object containing a formatting string as format property
+ */
+function now_macro(param) {
+    var d = new Date();
+    if (param.format) {
+        res.write(d.format(param.format));
+    } else if (param.as == "timestamp") {
+        res.write(d.getTime());
+    } else {
+        res.write(d);
+    }
+    return;
+}
+
+
+/**
+ * renders a global skin
+ */
+function skin_macro(param) {
+    if (param.name) {
+        renderSkin(param.name);
+    }
+    return;
+}