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Apache POI - Java API To Access Microsoft Format Files

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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.poi.openxml4j.opc.internal.marshallers;

import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

import org.apache.poi.openxml4j.exceptions.OpenXML4JException;
import org.apache.poi.openxml4j.opc.PackagePart;
import org.apache.poi.openxml4j.opc.StreamHelper;
import org.apache.poi.openxml4j.opc.internal.ZipHelper;

/**
 * Package core properties marshaller specialized for zipped package.
 *
 * @author Julien Chable
 */
public final class ZipPackagePropertiesMarshaller extends PackagePropertiesMarshaller {

	@Override
	public boolean marshall(PackagePart part, OutputStream out)
			throws OpenXML4JException {
		if (!(out instanceof ZipOutputStream)) {
			throw new IllegalArgumentException("ZipOutputStream expected!");
		}
		ZipOutputStream zos = (ZipOutputStream) out;

		// Saving the part in the zip file
		ZipEntry ctEntry = new ZipEntry(ZipHelper
				.getZipItemNameFromOPCName(part.getPartName().getURI()
						.toString()));
		try {
			// Save in ZIP
			zos.putNextEntry(ctEntry); // Add entry in ZIP
			super.marshall(part, out); // Marshall the properties inside a XML
			// Document
			if (!StreamHelper.saveXmlInStream(xmlDoc, out)) {
				return false;
			}
			zos.closeEntry();
		} catch (IOException e) {
			throw new OpenXML4JException(e.getLocalizedMessage(), e);
		}
		return true;
	}
}