Method to_base64

libminifi/include/utils/StringUtils.h:483–485

* Base64 encodes a string * @param str the string to be Base64 encoded * @param url if true, the URL-safe Base64 encoding will be used * @param padded if true, padding is added to the Base64 encoded string * @return the Base64 encoded string */

   * @return the Base64 encoded string
   */
  inline static std::string to_base64(const std::string& str, bool url = false, bool padded = true) {
    return to_base64(reinterpret_cast<const uint8_t*>(str.data()), str.length(), url, padded);
  }

  /**
   * Base64 encodes a string