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/*
* 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 org.apache.tools.ant.taskdefs.optional;
import java.io.PrintWriter;
import java.util.TooManyListenersException;
import javax.xml.transform.Transformer;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.taskdefs.XSLTProcess;
import org.apache.xalan.trace.PrintTraceListener;
import org.apache.xalan.transformer.TransformerImpl;
/**
* Sets up trace support for a given transformer.
*
* @since Ant 1.8.0
*/
public class Xalan2TraceSupport implements XSLTTraceSupport {
public void configureTrace(final Transformer t,
final XSLTProcess.TraceConfiguration conf) {
if (t instanceof TransformerImpl && conf != null) {
final PrintWriter w = new PrintWriter(conf.getOutputStream(), false);
final PrintTraceListener tl = new PrintTraceListener(w);
tl.m_traceElements = conf.getElements();
tl.m_traceExtension = conf.getExtension();
tl.m_traceGeneration = conf.getGeneration();
tl.m_traceSelection = conf.getSelection();
tl.m_traceTemplates = conf.getTemplates();
try {
((TransformerImpl) t).getTraceManager().addTraceListener(tl);
} catch (final TooManyListenersException tml) {
throw new BuildException(tml);
}
}
}
}
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