/* * Copyright (c) 2000 jPOS.org.  All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in *    the documentation and/or other materials provided with the *    distribution. * * 3. The end-user documentation included with the redistribution, *    if any, must include the following acknowledgment: *    "This product includes software developed by the jPOS project  *    (http://www.jpos.org/)". Alternately, this acknowledgment may  *    appear in the software itself, if and wherever such third-party  *    acknowledgments normally appear. * * 4. The names "jPOS" and "jPOS.org" must not be used to endorse  *    or promote products derived from this software without prior  *    written permission. For written permission, please contact  *    license@jpos.org. * * 5. Products derived from this software may not be called "jPOS", *    nor may "jPOS" appear in their name, without prior written *    permission of the jPOS project. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.   * IN NO EVENT SHALL THE JPOS PROJECT OR ITS CONTRIBUTORS BE LIABLE FOR  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE  * POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the jPOS Project.  For more * information please see <http://www.jpos.org/>. */package org.jpos.iso;import java.io.InputStream;import java.io.IOException;/** * Length is represented in ASCII (as in IFA_LL*) * Value is represented in BCD * ISOFieldPackager Binary LLNUM * * @author Mladen Mrkic <mmrkic@arius.co.yu> * * @see ISOComponent */public class IFA_LLBNUM extends ISOFieldPackager {    private Interpreter interpreter;    private Prefixer prefixer;        public IFA_LLBNUM () {        super();        interpreter = BCDInterpreter.LEFT_PADDED;        prefixer = AsciiPrefixer.LL;    }    /**     * @param len - field len     * @param description symbolic descrption     */    public  IFA_LLBNUM (int len, String description, boolean pad) {        super(len, description);        this.pad = pad;        interpreter = pad ? BCDInterpreter.LEFT_PADDED : BCDInterpreter.RIGHT_PADDED;        prefixer = AsciiPrefixer.LL;    }    public void setPad(boolean pad)    {        this.pad = pad;        interpreter = pad ? BCDInterpreter.LEFT_PADDED : BCDInterpreter.RIGHT_PADDED;    }    /**     * @param c - a component     * @return packed component     * @exception ISOException     */    public byte[] pack (ISOComponent c) throws ISOException {        String s = (String) c.getValue();        int len = s.length();        if (len > getLength() || len>99)   // paranoia settings            throw new ISOException (                "invalid len "+len +" packing LLNUMAB field " + c.getKey()            );        byte[] b = new byte[3 + (len >> 1)];        prefixer.encodeLength(((len + 1) >> 1) << 1, b);        interpreter.interpret(s, b, 2);        return b;    }    /**     * @param c - the Component to unpack     * @param b - binary image     * @param offset - starting offset within the binary image     * @return consumed bytes     * @exception ISOException     */    public int unpack (ISOComponent c, byte[] b, int offset)        throws ISOException    {        int len = prefixer.decodeLength(b, offset);        c.setValue (interpreter.uninterpret(b, offset + 2, len));        return 2 + (++len >> 1);    }    public void unpack (ISOComponent c, InputStream in)         throws IOException, ISOException    {        int len = prefixer.decodeLength(readBytes (in, 2), 2);        c.setValue (interpreter.uninterpret(readBytes (in, (len+2) >> 1), 0, len));    }    public int getMaxPackedLength() {        return 1 + ((getLength()+1) >> 1);    }}