ECI-Flags: Remove Latin1, UTF-8 and ASCII

Author: pc-coholic

libpretixsync/src/main/java/eu/pretix/libpretixsync/utils/InputUtils.kt

@@ -3,10 +3,14 @@ package eu.pretix.libpretixsync.utils
 fun cleanInput(raw_input: String, source_type: String): String {
     var cleaned = raw_input.replace(Regex("[\\p{C}]"), "�")  // remove unprintable characters
     if (source_type == "barcode") {
-        // Remove ECI flag for Latin-1 which is prepended by some barcode scanners to QR codes
-        // generated by the app "WalletPasses" even though it is the default encoding.
+        // Remove ECI flag which is prepended by some barcode scanners to QR codes generated by the
+        // app "WalletPasses" (and recently even Google Wallet) even though it is the default encoding.
         // https://en.wikipedia.org/wiki/Extended_Channel_Interpretation
-        cleaned = cleaned.removePrefix("\\000001")
+        cleaned = cleaned
+            .removePrefix("\\000001")  // Latin1
+            .removePrefix("\\000003")  // Latin1
+            .removePrefix("\\000026")  // UTF-8
+            .removePrefix("\\000027")  // ASCII
     }
     return cleaned
 }