}


    public long readUnsignedInt () throws IOException {
        return ( readInt() ) & 0xffffffffL;
    }


    public int readUnsignedShort () throws IOException {
        return ( readShort() ) & 0xffff;
    }


    public Date readFiletime () throws IOException {
        Date date = null;

        long last = readUnsignedInt();
        long first = readUnsignedInt();