Implemented that if QR Code text has more than 12 lines, ignoring them if they are empty

EpcQrCode/src/commonMain/kotlin/net/codinux/banking/epcqrcode/parser/EpcQrCodeParser.kt

@@ -12,7 +12,10 @@ open class EpcQrCodeParser {
             val lines = decodedQrCode.split("\n", "\r\n")
 
             if (lines.size < 10 || lines.size > 12) {
-                return createInvalidFormatResult(decodedQrCode, "A EPC-QR-Code consists of 10 to 12 lines, but passed string has ${lines.size} lines")
+                val linesThatAreTooManyAreEmpty = lines.size > 12 && lines.subList(12, lines.size).all { it.isBlank() }
+                if (linesThatAreTooManyAreEmpty == false) { // even though it's against specification, but there are implementations out there that contain more the 12 lines. Ignore if they are empty
+                    return createInvalidFormatResult(decodedQrCode, "A EPC-QR-Code consists of 10 to 12 lines, but passed string has ${lines.size} lines")
+                }
             }
             if (lines[0] != "BCD") {
                 return createInvalidFormatResult(decodedQrCode, "A EPC-QR-Code's first lines has to be exactly 'BCD'")

EpcQrCode/src/commonTest/kotlin/net.codinux.banking.epcqrcode/parser/EpcQrCodeParserTest.kt

@@ -170,6 +170,35 @@ Netter Text für den Zahlenden, damit dieser weiß, was er zahlt und auc
   }
 
 
+    @Test
+    fun moreThanSpecifiedLines() {
+
+        // when
+        val result = underTest.parseEpcQrCode("""
+            BCD
+            002
+            1
+            SCT
+            
+            Receiver
+            XX17LandMitLangerIBAN2345678901234
+            EUR12345689.01
+            
+            
+            
+            
+
+""".trimIndent())
+
+        // then
+        assertParsingSuccessful(result)
+
+        assertEpcQrCode(result, EpcQrCodeVersion.Version2, EpcQrCodeCharacterSet.UTF_8, "SCT", null, "Receiver",
+            "XX17LandMitLangerIBAN2345678901234", "EUR", "12345689.01", null, null,
+            null, null)
+    }
+
+
   private fun assertParsingSuccessful(result: ParseEpcQrCodeResult) {
     assertTrue(result.successful)
     assertNull(result.error)