Newcard/maestro

Algorithm Class/Luhn.h

@@ -15,6 +15,7 @@ typedef NS_ENUM(NSInteger, OLCreditCardType) {
     OLCreditCardTypeDiscover,
     OLCreditCardTypeDinersClub,
     OLCreditCardTypeJCB,
+    OLCreditCardTypeMAESTRO,
     OLCreditCardTypeUnsupported,
     OLCreditCardTypeInvalid
 };

Algorithm Class/Luhn.m

@@ -49,7 +49,7 @@ + (OLCreditCardType) typeFromString:(NSString *) string {
         return OLCreditCardTypeInvalid;
     }
 
-    NSArray *enums = @[@(OLCreditCardTypeAmex), @(OLCreditCardTypeDinersClub), @(OLCreditCardTypeDiscover), @(OLCreditCardTypeJCB), @(OLCreditCardTypeMastercard), @(OLCreditCardTypeVisa)];
+    NSArray *enums = @[@(OLCreditCardTypeAmex), @(OLCreditCardTypeDinersClub), @(OLCreditCardTypeDiscover), @(OLCreditCardTypeJCB), @(OLCreditCardTypeMastercard), @(OLCreditCardTypeVisa), @(OLCreditCardTypeMAESTRO)];
 
     __block OLCreditCardType type = OLCreditCardTypeInvalid;
     [enums enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
@@ -85,6 +85,9 @@ + (NSPredicate *) predicateForType:(OLCreditCardType) type {
         case OLCreditCardTypeMastercard:
             regex = @"^5[1-5][0-9]{5,}$";
             break;
+        case OLCreditCardTypeMAESTRO:
+            regex = @"^(5018|5020|5038|6304|6759|676[1-3]|6220)[0-9]{12}([0-9]{2}|[0-9]{3}|[0-9]{0})$";
+            break;
         case OLCreditCardTypeVisa:
             regex = @"^4[0-9]{6,}$";
             break;