/*
 * $Id$
 *
 * Copyright (C) 2003-2015 JNode.org
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library 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 Lesser General Public 
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; If not, write to the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package org.jnode.driver.net.prism2;

import org.jnode.util.LittleEndian;

/**
 * @author Ewout Prangsma (epr@users.sourceforge.net)
 */
final class Prism2Record {

    static final int HDR_LENGTH = 4;

    /**
     * Gets the record length from a given record.
     *
     * @param src
     * @param srcOfs
     * @return
     */
    static final int getRecordLength(byte[] src, int srcOfs) {
        return LittleEndian.getInt16(src, srcOfs + 0);
    }

    /**
     * Sets the record length from a given record.
     *
     * @param dst
     * @param dstOfs
     * @return
     */
    static final void setRecordLength(byte[] dst, int dstOfs, int recordLength) {
        LittleEndian.setInt16(dst, dstOfs + 0, recordLength);
    }

    /**
     * Gets the RID from a given record.
     *
     * @param src
     * @param srcOfs
     * @return
     */
    static final int getRecordRID(byte[] src, int srcOfs) {
        return LittleEndian.getInt16(src, srcOfs + 2);
    }

    /**
     * Sets the RID from a given record.
     *
     * @param dst
     * @param dstOfs
     * @return
     */
    static final void setRecordRID(byte[] dst, int dstOfs, int rid) {
        LittleEndian.setInt16(dst, dstOfs + 2, rid);
    }

}