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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2018 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://oss.oracle.com/licenses/CDDL+GPL-1.1
 * or LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at LICENSE.txt.
 *
 * GPL Classpath Exception:
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 *
 * Modifications:
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 * enclosed by brackets [] replaced by your own identifying information:
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 * elects to include this software in this distribution under the [CDDL or GPL
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package org.shoal.ha.cache.impl.util;

import java.io.*;
import java.nio.charset.Charset;

/**
 * @author Mahesh Kannan
 */
public class SimpleSerializer {

    public static void serializeString(ReplicationOutputStream ros, String str)
            throws IOException {
        int len = str == null ? 0 : str.length();
        ros.write(Utility.intToBytes(len));
        if (len > 0) {
            ros.write(str.getBytes(Charset.defaultCharset()));
        }
    }

    public static void serialize(ReplicationOutputStream ros, Object obj)
            throws IOException {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(bos);
        try {
            oos.writeObject(obj);
            oos.flush();
            byte[] data = bos.toByteArray();
            ros.write(Utility.intToBytes(data.length));
            ros.write(data);
        } finally {
            try {
                oos.close();
            } catch (IOException ioEx) {
            }
            try {
                bos.close();
            } catch (IOException ioEx) {
            }
        }
    }

    public static String deserializeString(byte[] data, int offset) {
        int len = Utility.bytesToInt(data, offset);
        return new String(data, offset+4, len, Charset.defaultCharset());
    }

    public static Object deserialize(ClassLoader loader, byte[] data, int offset)
            throws ClassNotFoundException, IOException {
        int len = Utility.bytesToInt(data, offset);
        ByteArrayInputStream bis = new ByteArrayInputStream(data, offset + 4, len);
        ObjectInputStreamWithLoader ois = new ObjectInputStreamWithLoader(bis, loader);
        try {
            return ois.readObject();
        } finally {
            try {
                ois.close();
            } catch (IOException ioEx) {
            }
            try {
                bis.close();
            } catch (IOException ioEx) {
            }
        }
    }

}