utils.java.svn-base

来自「cqME :java framework for TCK test.」· SVN-BASE 代码 · 共 74 行

/*
 * $Id$
 *
 * Copyright 1996-2007 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation.
 *
 * 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 version 2 for more details (a copy is
 * included at /legal/license.txt).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions.
 *
 */

package com.sun.tck.j2me.services.commService;

/**
 * Utility class.
 *
 */
public class Utils {

    public final static byte STATUS_OK = (byte) 0;
    public final static byte STATUS_ERROR = (byte) -1;
    public final static byte STATUS_ERROR_NO_HANDLER = (byte) 1;
    public final static byte STATUS_ERROR_INVALID_PACKET = (byte) 2;
    public final static byte STATUS_ERROR_NO_SERVICE_NAME = (byte) 3;
    
    public static byte[] getStatusArray(byte status) {
        return new byte[] {status};
    }
    
    public static byte[] addStatus(byte status, byte[] packet) {
        if (packet == null) {
            return getStatusArray(status);
        } else {
            byte[] newPacket = new byte[packet.length + 1];
            newPacket[0] = status;
            System.arraycopy(packet, 0, newPacket, 1, packet.length);
            return newPacket;
        }
    }
    
    public static byte getStatus(byte[] packet) {
        if (packet == null || packet.length < 1) {
            return STATUS_ERROR;
        }
        return packet[0];
    }
  
    public static byte[] removeStatus(byte[] packet) {
        if (packet != null && packet.length > 0) {
            byte[] reducedPacket = new byte[packet.length - 1];
            System.arraycopy(packet, 1, reducedPacket, 0, reducedPacket.length);
            return reducedPacket;
        } else {
            return null;
        }
    }
}