org.krysalis.barcode4j.impl.code39

Class Code39LogicImpl

java.lang.Object

org.krysalis.barcode4j.impl.code39.Code39LogicImpl

public class Code39LogicImpl
extends Object

This class is an implementation of the Code39 barcode.

Version:

$Id: Code39LogicImpl.java,v 1.5 2009-02-20 09:33:43 jmaerki Exp $

Author:

Jeremias Maerki todo: Add ASCII-7bit encoding table

Constructor Summary

Constructors

Constructor and Description
Code39LogicImpl() As a convenience this nullary constructor has been added to use the default values
Code39LogicImpl(ChecksumMode mode, boolean displayStartStop, boolean displayChecksum, boolean extendedCharSet) Main constructor

Method Summary

Modifier and Type	Method and Description
static char	calcChecksum(String msg) Calculates the checksum for a message to be encoded as an Code39 barcode.
protected void	encodeChar(ClassicBarcodeLogicHandler logic, char c) Encodes a single character.
static StringBuffer	escapeExtended(String msg, StringBuffer sb) Escapes US-ASCII characters as required for the extended character set for Code 39.
void	generateBarcodeLogic(ClassicBarcodeLogicHandler logic, String msg) Generates the barcode logic
ChecksumMode	getChecksumMode() Returns the currently active checksum mode.
static boolean	validateChecksum(String msg) Verifies the checksum for a message.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Code39LogicImpl

public Code39LogicImpl()

As a convenience this nullary constructor has been added to use the default values

Since:

2.2.0

Code39LogicImpl

public Code39LogicImpl(ChecksumMode mode,
                       boolean displayStartStop,
                       boolean displayChecksum,
                       boolean extendedCharSet)

Main constructor

Parameters:

mode - checksum mode. By default, is set to ChecksumMode.CP_AUTO.

displayStartStop - Controls whether to display start and stop characters in the human-readable message. By default, is set to false.

displayChecksum - Controls whether to display checksum in the human-readable message. By default, is set to false.

extendedCharSet - Controls whether to use extended character set. By default, is set to false.

Method Detail

getChecksumMode

public ChecksumMode getChecksumMode()

Returns the currently active checksum mode.

Returns:

the checksum mode

escapeExtended

public static StringBuffer escapeExtended(String msg,
                                          StringBuffer sb)

Escapes US-ASCII characters as required for the extended character set for Code 39.

Parameters:

msg - the original message

sb - the StringBuffer to write the escaped message to (or null)

Returns:

a StringBuffer containing the escaped message

calcChecksum

public static char calcChecksum(String msg)

Calculates the checksum for a message to be encoded as an Code39 barcode.

Parameters:

msg - message to calculate the check digit for

Returns:

char the check digit

validateChecksum

public static boolean validateChecksum(String msg)

Verifies the checksum for a message.

Parameters:

msg - message (check digit included)

Returns:

boolean True, if the checksum is correct

encodeChar

protected void encodeChar(ClassicBarcodeLogicHandler logic,
                          char c)

Encodes a single character.

Parameters:

logic - the logic handler to receive generated events

c - the character to encode

generateBarcodeLogic

public void generateBarcodeLogic(ClassicBarcodeLogicHandler logic,
                                 String msg)

Generates the barcode logic

Parameters:

logic - the logic handler to receive generated events

msg - the message to encode