/*
 *  Copyright 2013 Cloud4SOA, www.cloud4soa.eu
 *
 *  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 utils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

/**
 *
 * @author Ledakis Giannis (SingularLogic)
 * @deprecated 
 */
public class ZipTool{

public static void addFilesToExistingZip(File zipFile,
			 File[] files) throws IOException {
                // get a temp file
		File tempFile = File.createTempFile(zipFile.getName(), null);
                // delete it, otherwise you cannot rename your existing zip to it.
		tempFile.delete();

		boolean renameOk=zipFile.renameTo(tempFile);
		if (!renameOk)
		{
			throw new RuntimeException("could not rename the file "+zipFile.getAbsolutePath()+" to "+tempFile.getAbsolutePath());
		}
		byte[] buf = new byte[1024];

		ZipInputStream zin = new ZipInputStream(new FileInputStream(tempFile));
		ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));

		ZipEntry entry = zin.getNextEntry();
		while (entry != null) {
			String name = entry.getName();
			boolean notInFiles = true;
			for (File f : files) {
				if (f.getName().equals(name)) {
					notInFiles = false;
					break;
				}
			}
			if (notInFiles) {
				// Add ZIP entry to output stream.
				out.putNextEntry(new ZipEntry(name));
				// Transfer bytes from the ZIP file to the output file
				int len;
				while ((len = zin.read(buf)) > 0) {
					out.write(buf, 0, len);
				}
			}
			entry = zin.getNextEntry();
		}
		// Close the streams
		zin.close();
		// Compress the files
		for (int i = 0; i < files.length; i++) {
			InputStream in = new FileInputStream(files[i]);
			// Add ZIP entry to output stream.
			out.putNextEntry(new ZipEntry(files[i].getName()));
			// Transfer bytes from the file to the ZIP file
			int len;
			while ((len = in.read(buf)) > 0) {
				out.write(buf, 0, len);
			}
			// Complete the entry
			out.closeEntry();
			in.close();
		}
		// Complete the ZIP file
		out.close();
		tempFile.delete();
	}




}