* Implement res.resetBuffer() as proposed by Michael Platzer on helma-user.

Fixes bug 585: http://helma.org/bugs/show_bug.cgi?id=585

src/helma/framework/ResponseBean.java

@@ -114,6 +114,13 @@ public class ResponseBean implements Serializable {
         res.reset();
     }
 
+    /**
+     * Reset the response buffer, clearing all content previously written to it
+     */
+    public void resetBuffer() {
+        res.resetBuffer();
+    }
+
     /**
      * Returns the ServletResponse instance for this Response.
      * Returns null for internal and XML-RPC requests.

src/helma/framework/ResponseTrans.java

@@ -170,6 +170,15 @@ public final class ResponseTrans extends Writer implements Serializable {
         return reqtrans.getServletResponse();
     }
 
+    /**
+     * Reset the current response buffer.
+     */
+    public synchronized void resetBuffer() {
+        if (buffer != null) {
+            buffer.setLength(0);
+        }
+    }
+
     /**
      * Reset the response object to its initial empty state.
      */