FileUtils.java

/*
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (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.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * The Original Code is available at http://www.abiquo.com/.....
 * 
 * The Initial Developer of the Original Code is Soluciones Grid, S.L. (www.abiquo.com),
 * Consell de Cent 296 principal 2�, 08007 Barcelona, Spain.
 * No portions of the Code have been created by third parties. 
 * All Rights Reserved.
 * 
 * Contributor(s): ______________________________________.
 * 
 * Graphical User Interface of this software may be used under the terms
 * of the Common Public Attribution License Version 1.0 (the  "CPAL License",
 * available at http://cpal.abiquo.com), in which case the provisions of CPAL
 * License are applicable instead of those above. In relation of this portions 
 * of the Code, a Legal Notice according to Exhibits A and B of CPAL Licence 
 * should be provided in any distribution of the corresponding Code to Graphical
 * User Interface.
 */
package com.abiquo.abicloud.utils;

import java.io.*;
import java.nio.channels.*;

/**
 * Util class to copy files
 * 
 * @author pnavarro
 */
public class FileUtils
{
    /**
     * Copy the file given in the first parameter in the second parameter
     * 
     * @param in the file to copy
     * @param out the file where to copy
     * @throws IOException
     */
    public static void copyFile(File in, File out) throws IOException
    {
        FileChannel inChannel = new FileInputStream(in).getChannel();
        FileChannel outChannel = new FileOutputStream(out).getChannel();
        try
        {
            // magic number for Windows, 64Mb - 32Kb)
            int maxCount = (64 * 1024 * 1024) - (32 * 1024);
            long size = inChannel.size();
            long position = 0;
            while (position < size)
            {
                position += inChannel.transferTo(position, maxCount, outChannel);
            }

        }
        catch (IOException e)
        {
            throw e;
        }
        finally
        {
            if (inChannel != null)
                inChannel.close();
            if (outChannel != null)
                outChannel.close();
        }
    }

    public static void main(String args[]) throws IOException
    {
        FileUtils.copyFile(new File(args[0]), new File(args[1]));
    }

}