fix: ensure we fallback in combined mode on iOS (#67)

 - includes patch for IDScan corrupting input

Author: iBotPeaches

ios/IdscanSdk.m

@@ -22,19 +22,19 @@ @implementation IdscanSdk
     self.scannerPDFKey = apiKeys[@"iosDetectorPDFLicenseKey"];
     self.scannerMRZKey = apiKeys[@"iosDetectorMRZLicenseKey"];
     self.parserKey = apiKeys[@"iosParserPDFLicenseKey"];
-    
+
     // Store camera and parser keys
     [[NSUserDefaults standardUserDefaults] setValue: type forKey:@"scannerType"];
     [[NSUserDefaults standardUserDefaults] setValue: self.scannerPDFKey forKey:@"scannerPDFKey"];
     [[NSUserDefaults standardUserDefaults] setValue: self.scannerMRZKey forKey:@"scannerMRZKey"];
     [[NSUserDefaults standardUserDefaults] setValue: self.parserKey forKey:@"parserKey"];
     [[NSUserDefaults standardUserDefaults] synchronize];
-    
+
     dispatch_async(dispatch_get_main_queue(), ^(void) {
         ScannerViewController* scannerViewController = [[ScannerViewController alloc] init];
         scannerViewController.delegate = self;
         NSLog(@"IDScanner: Starting camera scanner...");
-        
+
         UIViewController *rootViewController = [[[UIApplication sharedApplication] keyWindow] rootViewController];
         [rootViewController presentViewController:scannerViewController animated:YES completion:nil];
     });
@@ -43,34 +43,41 @@ @implementation IdscanSdk
 - (void)returnScanResult:(ScannerViewController *)controller scanResult:(NSString *)result {
     NSLog(@"IDScanner: Raw scan result: %@", result);
     NSMutableDictionary *formattedData = [NSMutableDictionary dictionary];
-    
+
     if (result != nil) {
         // activate parser
         IDScanPDFParser *pdfParser = [IDScanPDFParser parserWithActivationKey:self.parserKey];
         IDScanMRZParser *mrzParser = [[IDScanMRZParser alloc] init];
-        
+
         NSDictionary<NSString *, NSString *> *parsedData;
         if ([self.scannerType isEqualToString:@"pdf"]) {
             parsedData = [pdfParser parse:result];
         } else if ([self.scannerType isEqualToString:@"mrz"]) {
             parsedData = [mrzParser parse:result];
+        } else {
+            // Due to IDScan corrupting our input during PDF Parser, we must copy into another var.
+            NSString *copiedResult = [NSString stringWithFormat:@"%@", result];
+            parsedData = [pdfParser parse:copiedResult];
+            if (parsedData == nil) {
+                parsedData = [mrzParser parse:result];
+            }
         }
-        
+
         if (parsedData != nil) {
           [formattedData setObject: @(true) forKey: @"success"];
           [formattedData setObject: parsedData forKey: @"data"];
-            
+
           self.scannerCallback(@[[NSNull null], formattedData]);
         } else {
           [formattedData setObject: @(false) forKey: @"success"];
           [formattedData setObject: [NSNull null] forKey: @"data"];
-            
+
           self.scannerCallback(@[@"Invalid Drivers License", formattedData]);
         }
     } else {
         [formattedData setObject: @(false) forKey: @"success"];
         [formattedData setObject: [NSNull null] forKey: @"data"];
-        
+
         self.scannerCallback(@[[NSNull null], formattedData]);
     }
 }