1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
// Copyright 2017 The Chromium Authors
// 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 "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 {
// 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|,
// |locale_name|. Note that |currency_code| should have been validated
// (as part of payment_details_validation.h) before this is created.
CurrencyFormatter(const std::string& currency_code,
const std::string& locale_name);
CurrencyFormatter(const CurrencyFormatter&) = delete;
CurrencyFormatter& operator=(const CurrencyFormatter&) = delete;
~CurrencyFormatter();
// Set the maximum number of fractional digits. (kMaximumNumFractionalDigits
// is the default if unset).
void SetMaxFractionalDigits(int max_fractional_digits);
// 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|.
std::u16string 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_;
};
} // namespace payments
#endif // COMPONENTS_PAYMENTS_CORE_CURRENCY_FORMATTER_H_
|
