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// Copyright 2017 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_CURRENCY_FORMATTER_H_
#define COMPONENTS_PAYMENTS_CORE_CURRENCY_FORMATTER_H_
#include <memory>
#include <string>
#include "base/macros.h"
#include "base/strings/string16.h"
#include "third_party/icu/source/common/unicode/locid.h"
#include "third_party/icu/source/common/unicode/unistr.h"
#include "third_party/icu/source/i18n/unicode/numfmt.h"
namespace payments {
// URI specifying the ISO4217 currency code specification. See for details:
// https://w3c.github.io/browser-payment-api/#paymentcurrencyamount-dictionary
extern const char kIso4217CurrencySystem[];
// Currency formatter for amounts, according to a currency code, which typically
// adheres to [ISO4217] (for example, "USD" for US Dollars).
class CurrencyFormatter {
public:
// Initializes the CurrencyFormatter for a given |currency_code|,
// |currency_system| and |locale_name|. Note that |currency_code| and
// |currency_system| should have been validated (as part of
// payment_details_validation.h) before this is created.
CurrencyFormatter(const std::string& currency_code,
const std::string& currency_system,
const std::string& locale_name);
~CurrencyFormatter();
// Formats the |amount| according to the currency code that was set. The
// result will NOT contain the currency code, nor a subset of it. Rather, the
// caller of this function should display the currency code separately. The
// return value may contain non-breaking space and is ready for display. In
// the case of a failure in initialization of the formatter or during
// formatter, this method will return |amount|.
base::string16 Format(const std::string& amount);
// Returns the formatted currency code (<= 6 characters including ellipsis if
// applicable).
const std::string& formatted_currency_code() const {
return formatted_currency_code_;
}
private:
const icu::Locale locale_;
std::unique_ptr<icu::UnicodeString> currency_code_;
std::string formatted_currency_code_;
std::unique_ptr<icu::NumberFormat> icu_formatter_;
DISALLOW_COPY_AND_ASSIGN(CurrencyFormatter);
};
} // namespace payments
#endif // COMPONENTS_PAYMENTS_CORE_CURRENCY_FORMATTER_H_
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