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89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
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/*
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* Copyright (c) 2024, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#define AK_DONT_REPLACE_STD
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#include <AK/Array.h>
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#include <AK/CharacterTypes.h>
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#include <AK/GenericLexer.h>
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#include <LibLocale/DurationFormat.h>
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#include <LibLocale/ICU.h>
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#include <LibLocale/NumberFormat.h>
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#include <unicode/measfmt.h>
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#include <unicode/measunit.h>
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#include <unicode/measure.h>
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namespace Locale {
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static constexpr bool is_not_ascii_digit(u32 code_point)
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{
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return !is_ascii_digit(code_point);
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}
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DigitalFormat digital_format(StringView locale)
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{
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UErrorCode status = U_ZERO_ERROR;
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auto locale_data = LocaleData::for_locale(locale);
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if (!locale_data.has_value())
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return {};
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if (auto const& digital_format = locale_data->digital_format(); digital_format.has_value())
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return *digital_format;
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RoundingOptions rounding_options;
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rounding_options.type = RoundingType::SignificantDigits;
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rounding_options.min_significant_digits = 1;
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rounding_options.max_significant_digits = 2;
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auto number_formatter = NumberFormat::create(locale, "latn"sv, {}, rounding_options);
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auto icu_locale = adopt_own(*locale_data->locale().clone());
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icu_locale->setUnicodeKeywordValue("nu", "latn", status);
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if (icu_failure(status))
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return {};
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icu::MeasureFormat measurement_formatter(*icu_locale, UMEASFMT_WIDTH_NUMERIC, status);
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if (icu_failure(status))
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return {};
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auto measures = to_array<icu::Measure>({
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{ 1, icu::MeasureUnit::createHour(status), status },
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{ 22, icu::MeasureUnit::createMinute(status), status },
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{ 33, icu::MeasureUnit::createSecond(status), status },
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});
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if (icu_failure(status))
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return {};
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icu::UnicodeString formatted;
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icu::FieldPosition position;
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measurement_formatter.formatMeasures(measures.data(), static_cast<i32>(measures.size()), formatted, position, status);
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if (icu_failure(status))
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return {};
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auto hours_minutes_seconds = icu_string_to_string(formatted);
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GenericLexer lexer { hours_minutes_seconds };
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DigitalFormat digital_format;
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auto hours = lexer.consume_while(is_ascii_digit);
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digital_format.uses_two_digit_hours = hours.length() == 2;
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auto hours_minutes_separator = lexer.consume_while(is_not_ascii_digit);
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digital_format.hours_minutes_separator = MUST(String::from_utf8(hours_minutes_separator));
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lexer.ignore_while(is_ascii_digit);
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auto minutes_seconds_separator = lexer.consume_while(is_not_ascii_digit);
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digital_format.minutes_seconds_separator = MUST(String::from_utf8(minutes_seconds_separator));
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locale_data->set_digital_format(move(digital_format));
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return *locale_data->digital_format();
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}
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}
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