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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2006-2012 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://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
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 *
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package com.sun.enterprise.util.shared;

import java.io.EOFException;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;

/**
 * This class contains utility methods that handles the archives.
 *
 * @author  Deployment Dev Team
 * @version 
 */
public class ArchivistUtils {

    /** 
     * Utility method that eads the input stream fully and writes the bytes to 
     * the current entry in the output stream. 
     */
    public static void copy(InputStream is, OutputStream os) throws IOException {
        copyWithoutClose(is, os);
        is.close();
        os.close();
    }     

    /** 
     * Utility method that eads the input stream fully and writes the bytes to 
     * the current entry in the output stream. 
     */
    public static void copyWithoutClose(InputStream is, OutputStream os) throws IOException {
        byte[] buf = new byte[4096];
        int len = 0;
        while (len != -1) {
            try {
                len = is.read(buf, 0, buf.length);
            } catch (EOFException eof){
                break;
            }

            if(len != -1) {
                os.write(buf, 0, len);
            }
        }
        os.flush();
    }
}