Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * jPOS Project [http://jpos.org]
 * Copyright (C) 2000-2012 Alejandro P. Revilla
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.util.BitSet;

public class Main {
    /**
     * converts a BitSet into a binary field
     * used in pack routines
     * @param b - the BitSet
     * @return binary representation
     */
    public static byte[] bitSet2byte(BitSet b) {
        int len = (((b.length() + 62) >> 6) << 6);
        byte[] d = new byte[len >> 3];
        for (int i = 0; i < len; i++)
            if (b.get(i + 1))
                d[i >> 3] |= (0x80 >> (i % 8));
        if (len > 64)
            d[0] |= 0x80;
        if (len > 128)
            d[8] |= 0x80;
        return d;
    }

    /**
     * converts a BitSet into a binary field
     * used in pack routines
     * @param b - the BitSet
     * @param bytes - number of bytes to return
     * @return binary representation
     */
    public static byte[] bitSet2byte(BitSet b, int bytes) {
        int len = bytes * 8;

        byte[] d = new byte[bytes];
        for (int i = 0; i < len; i++)
            if (b.get(i + 1))
                d[i >> 3] |= (0x80 >> (i % 8));
        //TODO: review why 2nd & 3rd bit map flags are set here??? 
        if (len > 64)
            d[0] |= 0x80;
        if (len > 128)
            d[8] |= 0x80;
        return d;
    }
}