/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.taglibs.standard.examples.util;
import java.io.*;
import javax.servlet.jsp.*;
/**
* <p>Utility class for examples webapp.
*
* @author Pierre Delisle
* @version $Revision: 1.3 $ $Date: 2004/02/28 01:01:41 $
*/
public class Util {
public static Writer castToWriter(Object obj) throws JspException {
if (obj instanceof OutputStream) {
return new OutputStreamWriter((OutputStream)obj);
} else if (obj instanceof Writer) {
return (Writer)obj;
/*@@@
} else if (obj instanceof String) {
return new StringWriter();
*/
}
throw new JspException("Invalid type '" + obj.getClass().getName() +
"' for castToWriter()");
}
public static Reader castToReader(Object obj) throws JspException {
if (obj instanceof InputStream) {
return new InputStreamReader((InputStream)obj);
} else if (obj instanceof Reader) {
return (Reader)obj;
} else if (obj instanceof String) {
return new StringReader((String)obj);
}
throw new JspException("Invalid type '" + obj.getClass().getName() +
"' for castToReader()");
}
}