public static long getEncodingCode(@Nullable String encodingName) {
    if (StringUtil.isEmptyOrSpaces(encodingName)) return -1;

    ID converted = nsString(encodingName);
    long cfEncoding = myFoundationLibrary.CFStringConvertIANACharSetNameToEncoding(converted);

    ID restored = myFoundationLibrary.CFStringConvertEncodingToIANACharSetName(cfEncoding);
    if (ID.NIL.equals(restored)) return -1;

    return convertCFEncodingToNS(cfEncoding);
  }
public static long getEncodingCode(@Nullable String encodingName)