com.google.zxing.oned

Class UPCEReader

java.lang.Object

com.google.zxing.oned.OneDReader

com.google.zxing.oned.UPCEANReader

com.google.zxing.oned.UPCEReader

All Implemented Interfaces:

Reader

public final class UPCEReader
extends UPCEANReader

Implements decoding of the UPC-E format.

This is a great reference for UPC-E information.

Author:

Sean Owen

Constructor Summary

Constructors

Constructor and Description
UPCEReader()

Method Summary

Modifier and Type	Method and Description
protected boolean	checkChecksum(String s)
static String	convertUPCEtoUPCA(String upce) Expands a UPC-E value back into its full, equivalent UPC-A code value.
protected int[]	decodeEnd(BitArray row, int endStart)
protected int	decodeMiddle(BitArray row, int[] startRange, StringBuilder result) Subclasses override this to decode the portion of a barcode between the start and end guard patterns.

Methods inherited from class com.google.zxing.oned.UPCEANReader

decodeRow, decodeRow

Methods inherited from class com.google.zxing.oned.OneDReader

decode, decode, patternMatchVariance, recordPattern, recordPatternInReverse, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

UPCEReader

public UPCEReader()

Method Detail

decodeMiddle

protected int decodeMiddle(BitArray row,
                           int[] startRange,
                           StringBuilder result)
                    throws NotFoundException

Description copied from class: UPCEANReader

Subclasses override this to decode the portion of a barcode between the start and end guard patterns.

Specified by:

decodeMiddle in class UPCEANReader

Parameters:

row - row of black/white values to search

startRange - start/end offset of start guard pattern

result - StringBuilder to append decoded chars to

Returns:

horizontal offset of first pixel after the "middle" that was decoded

Throws:

NotFoundException - if decoding could not complete successfully

decodeEnd

protected int[] decodeEnd(BitArray row,
                          int endStart)
                   throws NotFoundException

Throws:

NotFoundException

checkChecksum

protected boolean checkChecksum(String s)
                         throws FormatException

Parameters:

s - string of digits to check

Returns:

UPCEANReader.checkStandardUPCEANChecksum(CharSequence)

Throws:

FormatException - if the string does not contain only digits

convertUPCEtoUPCA

public static String convertUPCEtoUPCA(String upce)

Expands a UPC-E value back into its full, equivalent UPC-A code value.

Parameters:

upce - UPC-E code as string of digits

Returns:

equivalent UPC-A code as string of digits