Page Comparison

Function (StringVar input)
NumberVar checkDigitSubtotal;
NumberVar i;
StringVar checkDigit;
StringVar temp;

Select Len(input)
Case 12 :
input := Left(input, 11)
Case 14 :
input := Mid(input, 3, 11);

Select input[1]
Case "0" :
temp := "U|xa"
Case "1" :
temp := "[|xb"
Case "2" :
temp := "V|xc"
Case "3" :
temp := "W|xd"
Case "4" :
temp := "X|xe"
Case "5" :
temp := "Y|xf"
Case "6" :
temp := "Z|xg"
Case "7" :
temp := "u|xh"
Case "8" :
temp := "\|xi"
Case "9" :
temp := "]|xj";

For i := 2 To 6 Do
(
temp := temp + Chr(65 + Val(input[i]))
);

checkDigitSubtotal := Val(input[1]) + Val(input[3]) + Val(input[5]) + Val(input[7]) + Val(input[9]) + Val(Right(input, 1));
checkDigitSubtotal := (3 * checkDigitSubtotal) + Val(input[2]) + Val(input[4]) + Val(input[6]) + Val(input[8]) + Val(input[10]);
checkDigit := Right(ToText(300 - checkDigitSubtotal,"#"), 1);

temp := temp + "y" + Right(input, 5) + Chr(107 + (Val(checkDigit))) + "z";

Select checkDigit
Case "0" :
temp + "U"
Case "1" :
temp + "["
Case "2" :
temp + "V"
Case "3" :
temp + "W"
Case "4" :
temp + "X"
Case "5" :
temp + "Y"
Case "6" :
temp + "Z"
Case "7" :
temp + "u"
Case "8" :
temp + "\"
Case "9" :
temp + "]"