components/payments/core/payments_validators.h

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_PAYMENTS_CORE_PAYMENTS_VALIDATORS_H_
#define COMPONENTS_PAYMENTS_CORE_PAYMENTS_VALIDATORS_H_

#include <string>

#include "base/macros.h"
#include "components/payments/mojom/payment_request_data.mojom.h"

namespace payments {

class PaymentsValidators {
 public:
  // The most common identifiers are three-letter alphabetic codes as
  // defined by [ISO4217] (for example, "USD" for US Dollars).
  static bool IsValidCurrencyCodeFormat(const std::string& code,
                                        std::string* optional_error_message);

  // Returns true if |amount| is a valid currency code as defined in ISO 20022
  // CurrencyAnd30Amount.
  static bool IsValidAmountFormat(const std::string& amount,
                                  std::string* optional_error_message);

  // Returns true if |code| is a valid ISO 3166 country code.
  static bool IsValidCountryCodeFormat(const std::string& code,
                                       std::string* optional_error_message);

  // Returns true if |code| is a valid ISO 639 language code.
  static bool IsValidLanguageCodeFormat(const std::string& code,
                                        std::string* optional_error_message);

  // Returns true if |code| is a valid ISO 15924 script code.
  static bool IsValidScriptCodeFormat(const std::string& code,
                                      std::string* optional_error_message);

  // Splits BCP-57 |tag| into |language_code| and |script_code|.
  static void SplitLanguageTag(const std::string& tag,
                               std::string* language_code,
                               std::string* script_code);

  // Returns false if |error| is too long (greater than 2048).
  static bool IsValidErrorMsgFormat(const std::string& code,
                                    std::string* optional_error_message);

  // Returns false and optionally populate |optional_error_message| if any
  // fields of |errors| have too long string (greater than 2048).
  static bool IsValidPaymentValidationErrorsFormat(
      const mojom::PaymentValidationErrorsPtr& errors,
      std::string* optional_error_message);

 private:
  DISALLOW_IMPLICIT_CONSTRUCTORS(PaymentsValidators);
};

}  // namespace payments

#endif  // COMPONENTS_PAYMENTS_CORE_PAYMENTS_VALIDATORS_H_