Java InputStream Read Long readLong(InputStream is)

Description

read Long

License

Open Source License

Declaration

public static long readLong(InputStream is) throws IOException 

Method Source Code

//package com.java2s;
/*/*from  w  ww  . java  2s. com*/
 * Copyright (c) 1998-2015 Caucho Technology -- all rights reserved
 *
 * This file is part of Baratine(TM)(TM)
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Baratine 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.
 *
 * Baratine 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, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Baratine; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

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

public class Main {
    public static long readLong(byte[] buffer, int offset) {
        return (((buffer[0 + offset] & 0xffL) << 56) + ((buffer[1 + offset] & 0xffL) << 48)
                + ((buffer[2 + offset] & 0xffL) << 40) + ((buffer[3 + offset] & 0xffL) << 32)
                + ((buffer[4 + offset] & 0xffL) << 24) + ((buffer[5 + offset] & 0xffL) << 16)
                + ((buffer[6 + offset] & 0xffL) << 8) + ((buffer[7 + offset] & 0xffL) << 0));
    }

    public static long readLong(InputStream is) throws IOException {
        long d0 = is.read();
        long d1 = is.read();
        long d2 = is.read();
        long d3 = is.read();

        long d4 = is.read();
        long d5 = is.read();
        long d6 = is.read();
        long d7 = is.read();

        if (d7 < 0) {
            return d7;
        }

        return ((d0 << 56) + (d1 << 48) + (d2 << 40) + (d3 << 32) + (d4 << 24) + (d5 << 16) + (d6 << 8)
                + (d7 << 0));
    }
}

Related

1. readLong(InputStream input)
2. readLong(InputStream inputStream)
3. readLong(InputStream inputStream)
4. readLong(InputStream is)
5. readLong(InputStream is)
6. readLong(InputStream is)
7. readLong(InputStream is)
8. readLong(InputStream is)
9. readLong(InputStream is)