/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 validators;
import java.io.IOException;
import java.io.InputStream;
import jakarta.servlet.jsp.tagext.PageData;
import jakarta.servlet.jsp.tagext.TagLibraryValidator;
import jakarta.servlet.jsp.tagext.ValidationMessage;
/**
* Example tag library validator that simply dumps the XML version of each
* page to standard output (which will typically be sent to the file
* <code>$CATALINA_HOME/logs/catalina.out</code>). To utilize it, simply
* include a <code>taglib</code> directive for this tag library at the top
* of your JSP page.
*/
public class DebugValidator extends TagLibraryValidator {
// ----------------------------------------------------- Instance Variables
// --------------------------------------------------------- Public Methods
/**
* Validate a JSP page. This will get invoked once per directive in the
* JSP page. This method will return <code>null</code> if the page is
* valid; otherwise the method should return an array of
* <code>ValidationMessage</code> objects. An array of length zero is
* also interpreted as no errors.
*
* @param prefix The value of the prefix argument in this directive
* @param uri The value of the URI argument in this directive
* @param page The page data for this page
*/
@Override
public ValidationMessage[] validate(String prefix, String uri,
PageData page) {
System.out.println("---------- Prefix=" + prefix + " URI=" + uri +
"----------");
InputStream is = page.getInputStream();
while (true) {
try {
int ch = is.read();
if (ch < 0) {
break;
}
System.out.print((char) ch);
} catch (IOException ioe) {
break;
}
}
System.out.println();
System.out.println("-----------------------------------------------");
return null;
}
}