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| /*
* (C) 2011 Slava Archibasov
* http://plaincodesource.blogspot.com
*
* This code is licensed under The Code Project Open License (CPOL)
* http://www.codeproject.com/info/cpol10.aspx
*/
public class EAN13CodeBuilder {
private String codeStringValue;
private String generatedCode;
public EAN13CodeBuilder(String codeString)
{
codeStringValue = codeString;
parse();
}
public String getCode()
{
return generatedCode;
}
////////////////////////////////////////////////////////////////
// this method generates EAN 13 control number ans returns full
// string to encode
private String getFullCode()
{
int chetVal = 0, nechetVal = 0;
String codeToParse = codeStringValue;
for( int index = 0;index<6;index++ )
{
chetVal += Integer.valueOf(codeToParse.substring(
index*2+1,index*2+2)).intValue();
nechetVal += Integer.valueOf(codeToParse.substring(
index*2,index*2+1)).intValue();
}
chetVal *= 3;
int controlNumber = 10 - (chetVal+nechetVal)%10;
if( controlNumber == 10 ) controlNumber = 0;
codeToParse += String.valueOf(controlNumber);
return codeToParse;
}
private String DigitToUpperCase( String digit)
{
String letters = "ABCDEFGHIJ";
int position = Integer.valueOf(digit).intValue();
String retVal = letters.substring(position,position+1);
return retVal;
}
private String DigitToLowerCase( String digit)
{
String letters = "abcdefghij";
int position = Integer.valueOf(digit).intValue();
String retVal = letters.substring(position,position+1);
return retVal;
}
//////////////////////////////////////////////
// this method generates EAN 13 encoded string
// algorithm can be found at http://en.wikipedia.org/wiki/EAN-13
private String createEAN13Code(String rawCode)
{
int firstFlag = Integer.valueOf(
rawCode.substring(0,1)
).intValue();
String leftString = rawCode.substring(1,7);
String rightString = rawCode.substring(7);
String rightCode = "";
String leftCode = "";
for( int i=0;i<6;i++)
{
rightCode += DigitToLowerCase( rightString.substring(i,i+1) );
}
if( firstFlag == 0 )
{
leftCode = "#!"+leftString.substring(0,1)
+leftString.substring(1,2)
+leftString.substring(2,3)
+leftString.substring(3,4)
+leftString.substring(4,5)
+leftString.substring(5);
}
if( firstFlag == 1 )
{
leftCode = "$!"+leftString.substring(0,1)
+leftString.substring(1,2)
+DigitToUpperCase(leftString.substring(2,3))
+leftString.substring(3,4)
+DigitToUpperCase(leftString.substring(4,5))
+DigitToUpperCase(leftString.substring(5));
}
if( firstFlag == 2 )
{
leftCode = "%!"+leftString.substring(0,1)
+leftString.substring(1,2)
+DigitToUpperCase(leftString.substring(2,3))
+DigitToUpperCase(leftString.substring(3,4))
+leftString.substring(4,5)
+DigitToUpperCase(leftString.substring(5));
}
if( firstFlag == 3 )
{
leftCode = "&!"+leftString.substring(0,1)
+leftString.substring(1,2)
+DigitToUpperCase(leftString.substring(2,3))
+DigitToUpperCase(leftString.substring(3,4))
+DigitToUpperCase(leftString.substring(4,5))
+leftString.substring(5);
}
if( firstFlag == 4 )
{
leftCode = "'!"+leftString.substring(0,1)
+DigitToUpperCase(leftString.substring(1,2))
+leftString.substring(2,3)
+leftString.substring(3,4)
+DigitToUpperCase(leftString.substring(4,5))
+DigitToUpperCase(leftString.substring(5));
}
if( firstFlag == 5 )
{
leftCode = "(!"+leftString.substring(0,1)
+DigitToUpperCase(leftString.substring(1,2))
+DigitToUpperCase(leftString.substring(2,3))
+leftString.substring(3,4)
+leftString.substring(4,5)
+DigitToUpperCase(leftString.substring(5));
}
if( firstFlag == 6 )
{
leftCode = ")!"+leftString.substring(0,1)
+DigitToUpperCase(leftString.substring(1,2))
+DigitToUpperCase(leftString.substring(2,3))
+DigitToUpperCase(leftString.substring(3,4))
+leftString.substring(4,5)
+leftString.substring(5);
}
if( firstFlag == 7 )
{
leftCode = "*!"+leftString.substring(0,1)
+DigitToUpperCase(leftString.substring(1,2))
+leftString.substring(2,3)
+DigitToUpperCase(leftString.substring(3,4))
+leftString.substring(4,5)
+DigitToUpperCase(leftString.substring(5));
}
if( firstFlag == 8 )
{
leftCode = "+!"+leftString.substring(0,1)
+DigitToUpperCase(leftString.substring(1,2))
+leftString.substring(2,3)
+DigitToUpperCase(leftString.substring(3,4))
+DigitToUpperCase(leftString.substring(4,5))
+leftString.substring(5);
}
if( firstFlag == 9 )
{
leftCode = ",!"+leftString.substring(0,1)
+DigitToUpperCase(leftString.substring(1,2))
+DigitToUpperCase(leftString.substring(2,3))
+leftString.substring(3,4)
+DigitToUpperCase(leftString.substring(4,5))
+leftString.substring(5);
}
String retVal = leftCode + "-" + rightCode + "!";
return retVal;
}
private void parse()
{
String fullString = getFullCode();
System.out.println( "Full code: " + fullString );
generatedCode = createEAN13Code(fullString);
System.out.println( "Generated code: " + generatedCode );
}
} |
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