interpreter.java

java pos,你可以直接编译运行,

/*
 * 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:
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 * 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 [e-mail].
 *  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
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 * ====================================================================
 * 
 * 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;

/**
 * Implementations convert Strings into byte arrays and vice versa.
 * 
 * @author joconnor
 * @version $Revision: 1.1 $ $Date: 2003/10/24 07:34:02 $
 */
public interface Interpreter
{
    /**
	 * Converts the string data into a different interpretation. Standard
	 * interpretations are ASCII, EBCDIC, BCD and LITERAL.
	 * 
	 * @param data
	 *            The data to be interpreted.
	 * @return The interpreted data.
	 */
    void interpret(String data, byte[] b, int offset);

    /**
	 * Converts the byte array into a String. This reverses the interpret
	 * method.
	 * 
	 * @param rawData
	 *            The interpreted data.
	 * @param offset
	 *            The index in rawData to start interpreting at.
	 * @param length
	 *            The number of data units to interpret.
	 * @return The uninterpreted data.
	 */
    String uninterpret(byte[] rawData, int offset, int length);

    /**
	 * Returns the number of bytes required to interpret a String of length
	 * nDataUnits.
	 */
    int getPackedLength(int nDataUnits);
}