Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * jSite2 - FcpUtils.java -
 * Copyright  2008 David Roden
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

import java.io.EOFException;

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

public class Main {
    /**
     * Copies as many bytes as possible (i.e. until {@link InputStream#read()}
     * returns <code>-1</code>) from the source input stream to the
     * destination output stream.
     * 
     * @param source
     *            The input stream to read from
     * @param destination
     *            The output stream to write to
     * @throws IOException
     *             if an I/O error occurs
     */
    public static void copy(InputStream source, OutputStream destination) throws IOException {
        copy(source, destination, -1);
    }

    /**
     * Copies <code>length</code> bytes from the source input stream to the
     * destination output stream. If <code>length</code> is <code>-1</code>
     * as much bytes as possible will be copied (i.e. until
     * {@link InputStream#read()} returns <code>-1</code> to signal the end of
     * the stream).
     * 
     * @param source
     *            The input stream to read from
     * @param destination
     *            The output stream to write to
     * @param length
     *            The number of bytes to copy
     * @throws IOException
     *             if an I/O error occurs
     */
    public static void copy(InputStream source, OutputStream destination, long length) throws IOException {
        copy(source, destination, length, 1 << 16);
    }

    /**
     * Copies <code>length</code> bytes from the source input stream to the
     * destination output stream. If <code>length</code> is <code>-1</code>
     * as much bytes as possible will be copied (i.e. until
     * {@link InputStream#read()} returns <code>-1</code> to signal the end of
     * the stream).
     * 
     * @param source
     *            The input stream to read from
     * @param destination
     *            The output stream to write to
     * @param length
     *            The number of bytes to copy
     * @param bufferSize
     *            The buffer size
     * @throws IOException
     *             if an I/O error occurs
     */
    public static void copy(InputStream source, OutputStream destination, long length, int bufferSize)
            throws IOException {
        long remaining = length;
        byte[] buffer = new byte[bufferSize];
        int read = 0;
        while ((remaining == -1) || (remaining > 0)) {
            read = source.read(buffer, 0,
                    ((remaining > bufferSize) || (remaining == -1)) ? bufferSize : (int) remaining);
            if (read == -1) {
                if (length == -1) {
                    return;
                }
                throw new EOFException("stream reached eof");
            }
            destination.write(buffer, 0, read);
            remaining -= read;
        }
    }
}