blob: e15be773ceb6221387c8183e90c880590e8c700a [file] [log] [blame]
// Copyright 2014 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.
#include "ui/base/l10n/formatter.h"
#include <limits.h>
#include <memory>
#include <vector>
#include "base/logging.h"
#include "third_party/icu/source/common/unicode/unistr.h"
#include "third_party/icu/source/i18n/unicode/msgfmt.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/strings/grit/ui_strings.h"
namespace ui {
UI_BASE_EXPORT bool formatter_force_fallback = false;
struct Pluralities {
int id;
const char* const fallback_one;
const char* const fallback_other;
};
static const Pluralities IDS_ELAPSED_SHORT_SEC = {
IDS_TIME_ELAPSED_SECS,
"one{# sec ago}",
" other{# secs ago}"
};
static const Pluralities IDS_ELAPSED_SHORT_MIN = {
IDS_TIME_ELAPSED_MINS,
"one{# min ago}",
" other{# mins ago}"
};
static const Pluralities IDS_ELAPSED_HOUR = {
IDS_TIME_ELAPSED_HOURS,
"one{# hour ago}",
" other{# hours ago}"
};
static const Pluralities IDS_ELAPSED_DAY = {
IDS_TIME_ELAPSED_DAYS,
"one{# day ago}",
" other{# days ago}"
};
static const Pluralities IDS_REMAINING_SHORT_SEC = {
IDS_TIME_REMAINING_SECS,
"one{# sec left}",
" other{# secs left}"
};
static const Pluralities IDS_REMAINING_SHORT_MIN = {
IDS_TIME_REMAINING_MINS,
"one{# min left}",
" other{# mins left}"
};
static const Pluralities IDS_REMAINING_LONG_SEC = {
IDS_TIME_REMAINING_LONG_SECS,
"one{# second left}",
" other{# seconds left}"
};
static const Pluralities IDS_REMAINING_LONG_MIN = {
IDS_TIME_REMAINING_LONG_MINS,
"one{# minute left}",
" other{# minutes left}"
};
static const Pluralities IDS_REMAINING_HOUR = {
IDS_TIME_REMAINING_HOURS,
"one{# hour left}",
" other{# hours left}"
};
static const Pluralities IDS_REMAINING_DAY = {
IDS_TIME_REMAINING_DAYS,
"one{# day left}",
" other{# days left}"
};
static const Pluralities IDS_DURATION_SHORT_SEC = {
IDS_TIME_SECS,
"one{# sec}",
" other{# secs}"
};
static const Pluralities IDS_DURATION_SHORT_MIN = {
IDS_TIME_MINS,
"one{# min}",
" other{# mins}"
};
static const Pluralities IDS_LONG_SEC = {
IDS_TIME_LONG_SECS,
"one{# second}",
" other{# seconds}"
};
static const Pluralities IDS_LONG_MIN = {
IDS_TIME_LONG_MINS,
"one{# minute}",
" other{# minutes}"
};
static const Pluralities IDS_DURATION_HOUR = {
IDS_TIME_HOURS,
"one{# hour}",
" other{# hours}"
};
static const Pluralities IDS_DURATION_DAY = {
IDS_TIME_DAYS,
"one{# day}",
" other{# days}"
};
static const Pluralities IDS_LONG_MIN_1ST = {
IDS_TIME_LONG_MINS_1ST,
"one{# minute and }",
" other{# minutes and }"
};
static const Pluralities IDS_LONG_SEC_2ND = {
IDS_TIME_LONG_SECS_2ND,
"one{# second}",
" other{# seconds}"
};
static const Pluralities IDS_DURATION_HOUR_1ST = {
IDS_TIME_HOURS_1ST,
"one{# hour and }",
" other{# hours and }"
};
static const Pluralities IDS_LONG_MIN_2ND = {
IDS_TIME_LONG_MINS_2ND,
"one{# minute}",
" other{# minutes}"
};
static const Pluralities IDS_DURATION_DAY_1ST = {
IDS_TIME_DAYS_1ST,
"one{# day and }",
" other{# days and }"
};
static const Pluralities IDS_DURATION_HOUR_2ND = {
IDS_TIME_HOURS_2ND,
"one{# hour}",
" other{# hours}"
};
namespace {
std::unique_ptr<icu::PluralRules> BuildPluralRules() {
UErrorCode err = U_ZERO_ERROR;
std::unique_ptr<icu::PluralRules> rules(
icu::PluralRules::forLocale(icu::Locale::getDefault(), err));
if (U_FAILURE(err)) {
err = U_ZERO_ERROR;
icu::UnicodeString fallback_rules("one: n is 1", -1, US_INV);
rules.reset(icu::PluralRules::createRules(fallback_rules, err));
DCHECK(U_SUCCESS(err));
}
return rules;
}
void FormatNumberInPlural(const icu::MessageFormat& format, int number,
icu::UnicodeString* result, UErrorCode* err) {
if (U_FAILURE(*err)) return;
icu::Formattable formattable(number);
icu::FieldPosition ignore(icu::FieldPosition::DONT_CARE);
format.format(&formattable, 1, *result, ignore, *err);
DCHECK(U_SUCCESS(*err));
return;
}
} // namespace
Formatter::Formatter(const Pluralities& sec_pluralities,
const Pluralities& min_pluralities,
const Pluralities& hour_pluralities,
const Pluralities& day_pluralities) {
simple_format_[UNIT_SEC] = InitFormat(sec_pluralities);
simple_format_[UNIT_MIN] = InitFormat(min_pluralities);
simple_format_[UNIT_HOUR] = InitFormat(hour_pluralities);
simple_format_[UNIT_DAY] = InitFormat(day_pluralities);
}
Formatter::Formatter(const Pluralities& sec_pluralities,
const Pluralities& min_pluralities,
const Pluralities& hour_pluralities,
const Pluralities& day_pluralities,
const Pluralities& min_sec_pluralities1,
const Pluralities& min_sec_pluralities2,
const Pluralities& hour_min_pluralities1,
const Pluralities& hour_min_pluralities2,
const Pluralities& day_hour_pluralities1,
const Pluralities& day_hour_pluralities2) {
simple_format_[UNIT_SEC] = InitFormat(sec_pluralities);
simple_format_[UNIT_MIN] = InitFormat(min_pluralities);
simple_format_[UNIT_HOUR] = InitFormat(hour_pluralities);
simple_format_[UNIT_DAY] = InitFormat(day_pluralities);
detailed_format_[TWO_UNITS_MIN_SEC][0] = InitFormat(min_sec_pluralities1);
detailed_format_[TWO_UNITS_MIN_SEC][1] = InitFormat(min_sec_pluralities2);
detailed_format_[TWO_UNITS_HOUR_MIN][0] = InitFormat(hour_min_pluralities1);
detailed_format_[TWO_UNITS_HOUR_MIN][1] = InitFormat(hour_min_pluralities2);
detailed_format_[TWO_UNITS_DAY_HOUR][0] = InitFormat(day_hour_pluralities1);
detailed_format_[TWO_UNITS_DAY_HOUR][1] = InitFormat(day_hour_pluralities2);
}
void Formatter::Format(Unit unit,
int value,
icu::UnicodeString* formatted_string) const {
DCHECK(simple_format_[unit]);
DCHECK(formatted_string->isEmpty() == TRUE);
UErrorCode error = U_ZERO_ERROR;
FormatNumberInPlural(*simple_format_[unit],
value, formatted_string, &error);
DCHECK(U_SUCCESS(error)) << "Error in icu::PluralFormat::format().";
return;
}
void Formatter::Format(TwoUnits units,
int value_1,
int value_2,
icu::UnicodeString* formatted_string) const {
DCHECK(detailed_format_[units][0])
<< "Detailed() not implemented for your (format, length) combination!";
DCHECK(detailed_format_[units][1])
<< "Detailed() not implemented for your (format, length) combination!";
DCHECK(formatted_string->isEmpty() == TRUE);
UErrorCode error = U_ZERO_ERROR;
FormatNumberInPlural(*detailed_format_[units][0], value_1,
formatted_string, &error);
DCHECK(U_SUCCESS(error));
FormatNumberInPlural(*detailed_format_[units][1], value_2,
formatted_string, &error);
DCHECK(U_SUCCESS(error));
return;
}
std::unique_ptr<icu::MessageFormat> Formatter::CreateFallbackFormat(
const icu::PluralRules& rules,
const Pluralities& pluralities) const {
icu::UnicodeString pattern("{NUMBER, plural, ");
if (rules.isKeyword(UNICODE_STRING_SIMPLE("one")))
pattern += icu::UnicodeString(pluralities.fallback_one);
pattern += icu::UnicodeString(pluralities.fallback_other);
pattern.append(UChar(0x7du)); // "}" = U+007D
UErrorCode error = U_ZERO_ERROR;
std::unique_ptr<icu::MessageFormat> format(
new icu::MessageFormat(pattern, error));
DCHECK(U_SUCCESS(error));
return format;
}
std::unique_ptr<icu::MessageFormat> Formatter::InitFormat(
const Pluralities& pluralities) {
if (!formatter_force_fallback) {
base::string16 pattern = l10n_util::GetStringUTF16(pluralities.id);
UErrorCode error = U_ZERO_ERROR;
std::unique_ptr<icu::MessageFormat> format(new icu::MessageFormat(
icu::UnicodeString(FALSE, pattern.data(), pattern.length()), error));
DCHECK(U_SUCCESS(error));
if (format.get())
return format;
}
std::unique_ptr<icu::PluralRules> rules(BuildPluralRules());
return CreateFallbackFormat(*rules, pluralities);
}
const Formatter* FormatterContainer::Get(TimeFormat::Format format,
TimeFormat::Length length) const {
DCHECK(formatter_[format][length])
<< "Combination of FORMAT_ELAPSED and LENGTH_LONG is not implemented!";
return formatter_[format][length].get();
}
FormatterContainer::FormatterContainer() {
Initialize();
}
FormatterContainer::~FormatterContainer() {
}
void FormatterContainer::Initialize() {
formatter_[TimeFormat::FORMAT_ELAPSED][TimeFormat::LENGTH_SHORT].reset(
new Formatter(IDS_ELAPSED_SHORT_SEC,
IDS_ELAPSED_SHORT_MIN,
IDS_ELAPSED_HOUR,
IDS_ELAPSED_DAY));
formatter_[TimeFormat::FORMAT_ELAPSED][TimeFormat::LENGTH_LONG].reset();
formatter_[TimeFormat::FORMAT_REMAINING][TimeFormat::LENGTH_SHORT].reset(
new Formatter(IDS_REMAINING_SHORT_SEC,
IDS_REMAINING_SHORT_MIN,
IDS_REMAINING_HOUR,
IDS_REMAINING_DAY));
formatter_[TimeFormat::FORMAT_REMAINING][TimeFormat::LENGTH_LONG].reset(
new Formatter(IDS_REMAINING_LONG_SEC,
IDS_REMAINING_LONG_MIN,
IDS_REMAINING_HOUR,
IDS_REMAINING_DAY));
formatter_[TimeFormat::FORMAT_DURATION][TimeFormat::LENGTH_SHORT].reset(
new Formatter(IDS_DURATION_SHORT_SEC,
IDS_DURATION_SHORT_MIN,
IDS_DURATION_HOUR,
IDS_DURATION_DAY));
formatter_[TimeFormat::FORMAT_DURATION][TimeFormat::LENGTH_LONG].reset(
new Formatter(IDS_LONG_SEC,
IDS_LONG_MIN,
IDS_DURATION_HOUR,
IDS_DURATION_DAY,
IDS_LONG_MIN_1ST,
IDS_LONG_SEC_2ND,
IDS_DURATION_HOUR_1ST,
IDS_LONG_MIN_2ND,
IDS_DURATION_DAY_1ST,
IDS_DURATION_HOUR_2ND));
}
void FormatterContainer::Shutdown() {
for (int format = 0; format < TimeFormat::FORMAT_COUNT; ++format) {
for (int length = 0; length < TimeFormat::LENGTH_COUNT; ++length) {
formatter_[format][length].reset();
}
}
}
} // namespace ui