package twinfeats.pilot.pdb;

/**

 * Class to represent a PDB record

 * @version     1.0 Dec 17 1997

 * @author      Kent L. Smotherman

 */

public class PDBRecord {

    /**

     * Construct a new PDB record

     * @param id        id for this record

     * @param data      data for this record

     * @param copy      flag to determine if the supplied data should be

     *                  copied or the reference simply stored

     */

    public PDBRecord(int id, byte[] data, boolean copy) {

        this(data,copy);

        mID = id;

    }
    /**

     * Construct a new PDB record with the record ID being generated from

     * the PDB files Base ID.

     * @param data      data for this record

     * @param copy      flag to determine if the supplied data should be

     *                  copied or the reference simply stored

     */

    public PDBRecord(byte[] data, boolean copy) {

        mID = mBaseID++;

        if (copy) {

            mData = new byte[data.length];
				System.arraycopy(data,0,mData,0,data.length);

        }

        else

            mData = data;

    }

    public PDBRecord(byte[] data, int len, boolean copy) {

        mID = mBaseID++;

        if (copy) {

            mData = new byte[len];
			System.arraycopy(data,0,mData,0,len);
        }

        else

            mData = data;

    }
    /**

     * Construct a new PDB record with no copy

     * @param id        id for this record

     * @param data      data for this record

     */

    public PDBRecord(int id, String data) {

        this(data);

        mID = id;

    }
    /**

     * Construct a new PDB record with no copy and using an ID generated

     * from the PDB file's Base ID.

     * @param data      data for this record

     */

    public PDBRecord(String data) {

        mID = mBaseID++;

        mData = new byte[data.length()];

        data.getBytes(0,data.length(),mData,0);

    }
    /**

     * Retrieve the record's data length

     * @returns         length

     */

    public int getLength() {

        if (mData != null)

            return mData.length;

        return 0;

    }
    /**

     * Retrieve the record's data

     * @returns         data

     */

    public byte[] getData() {

        return mData;

    }
    /**

     * Retrieve the record's ID

     * @returns         id

     */

    public int getID() {

        return mID;

    }
    /**

     * Set the PDB file's Base ID for auto-generated ID's

     * @param id        new base id

     */

    public static void setBaseID(int id) {

        mBaseID = id & 0x00ffffff;

    }
    int     mID;

    byte[]  mData;
    static  int mBaseID=0;

}