org.jboss.jdocbook.render.fop.ResultImpl Maven / Gradle / Ivy

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This plugin adds support for DocBook handling to Maven.
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/*
 * jDocBook, processing of DocBook sources
 *
 * Copyright (c) 2010, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.jboss.jdocbook.render.fop;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;

import javax.xml.transform.sax.SAXResult;

import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.FopFactory;
import org.apache.fop.apps.MimeConstants;
import org.jboss.jdocbook.JDocBookComponentRegistry;
import org.jboss.jdocbook.render.RenderingException;

import net.sourceforge.jeuclid.fop.JEuclidXMLHandler;

/**
 * {@link javax.xml.transform.sax.SAXResult} object used to pipe PDF XSLT events
 * through to FOP for PDF generation.
 *
 * @author Steve Ebersole
 */
public class ResultImpl extends SAXResult {
	private OutputStream outputStream;

	public ResultImpl(File targetFile, JDocBookComponentRegistry componentRegistry) throws RenderingException {
		try {
			outputStream = new BufferedOutputStream(new FileOutputStream(targetFile));

			FopFactory fopFactory = FopFactory.newInstance(new URI("file:" + System.getProperty("user.dir")),
					new FileInputStream(FopConfigHelper.getFopConfiguration(componentRegistry)));

			FOUserAgent fopUserAgent = fopFactory.newFOUserAgent();

			fopUserAgent.getXMLHandlerRegistry().addXMLHandler(new JEuclidXMLHandler());
			fopUserAgent.setProducer("jDocBook - Java-based DocBook processor");
			fopUserAgent.getEventBroadcaster().addEventListener(new EventListenerBridge());

			Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, fopUserAgent, outputStream);
			this.setHandler(fop.getDefaultHandler());
		} catch (Throwable t) {
			throw new RenderingException("error building transformation result [" + targetFile.getAbsolutePath() + "]",
					t);
		}
	}

	public void release() {
		if (outputStream == null) {
			return;
		}
		try {
			outputStream.flush();
			outputStream.close();
		} catch (IOException ignore) {
		}
	}
}