
Currently, the unique string lists are stored in the initialized data sections of their shared libraries. In order to move the data to the read-only section, generate the strings using RLE arrays. We generate two arrays: the first is the RLE data itself, the second is a list of indices into the RLE array for each string. We then generate a decoding method to convert an RLE string to a StringView.
312 lines
11 KiB
C++
312 lines
11 KiB
C++
/*
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* Copyright (c) 2022, 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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#include "GeneratorUtil.h"
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#include <AK/Format.h>
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#include <AK/HashMap.h>
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#include <AK/JsonObject.h>
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#include <AK/JsonParser.h>
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#include <AK/JsonValue.h>
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#include <AK/LexicalPath.h>
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#include <AK/SourceGenerator.h>
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#include <AK/String.h>
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#include <AK/StringBuilder.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/DirIterator.h>
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#include <LibCore/Stream.h>
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#include <LibUnicode/Locale.h>
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#include <LibUnicode/RelativeTimeFormat.h>
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using StringIndexType = u16;
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constexpr auto s_string_index_type = "u16"sv;
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using RelativeTimeFormatIndexType = u16;
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constexpr auto s_relative_time_format_index_type = "u16"sv;
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struct RelativeTimeFormat {
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unsigned hash() const
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{
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auto hash = time_unit.hash();
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hash = pair_int_hash(hash, style.hash());
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hash = pair_int_hash(hash, plurality.hash());
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hash = pair_int_hash(hash, tense_or_number);
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hash = pair_int_hash(hash, pattern);
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return hash;
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}
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bool operator==(RelativeTimeFormat const& other) const
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{
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return (time_unit == other.time_unit)
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&& (plurality == other.plurality)
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&& (style == other.style)
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&& (tense_or_number == other.tense_or_number)
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&& (pattern == other.pattern);
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}
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String time_unit;
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String style;
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String plurality;
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StringIndexType tense_or_number { 0 };
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StringIndexType pattern { 0 };
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};
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template<>
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struct AK::Formatter<RelativeTimeFormat> : Formatter<FormatString> {
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ErrorOr<void> format(FormatBuilder& builder, RelativeTimeFormat const& format)
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{
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return Formatter<FormatString>::format(builder,
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"{{ TimeUnit::{}, Style::{}, PluralCategory::{}, {}, {} }}"sv,
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format.time_unit,
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format.style,
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format.plurality,
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format.tense_or_number,
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format.pattern);
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}
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};
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template<>
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struct AK::Traits<RelativeTimeFormat> : public GenericTraits<RelativeTimeFormat> {
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static unsigned hash(RelativeTimeFormat const& format) { return format.hash(); }
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};
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struct Locale {
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Vector<RelativeTimeFormatIndexType> time_units;
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};
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struct UnicodeLocaleData {
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UniqueStringStorage<StringIndexType> unique_strings;
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UniqueStorage<RelativeTimeFormat, RelativeTimeFormatIndexType> unique_formats;
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HashMap<String, Locale> locales;
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};
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static ErrorOr<void> parse_date_fields(String locale_dates_path, UnicodeLocaleData& locale_data, Locale& locale)
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{
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LexicalPath date_fields_path(move(locale_dates_path));
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date_fields_path = date_fields_path.append("dateFields.json"sv);
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auto date_fields = TRY(read_json_file(date_fields_path.string()));
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auto const& main_object = date_fields.as_object().get("main"sv);
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auto const& locale_object = main_object.as_object().get(date_fields_path.parent().basename());
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auto const& dates_object = locale_object.as_object().get("dates"sv);
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auto const& fields_object = dates_object.as_object().get("fields"sv);
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auto is_sanctioned_unit = [](auto unit) {
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// This is a copy of the time units sanctioned for use within ECMA-402.
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// https://tc39.es/ecma402/#sec-singularrelativetimeunit
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return unit.is_one_of("second"sv, "minute"sv, "hour"sv, "day"sv, "week"sv, "month"sv, "quarter"sv, "year"sv);
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};
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auto parse_pattern = [&](auto unit, auto style, auto plurality, auto tense_or_number, auto const& pattern) {
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RelativeTimeFormat format {};
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format.time_unit = unit.to_titlecase_string();
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format.style = style.to_titlecase_string();
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format.plurality = plurality.to_titlecase_string();
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format.tense_or_number = locale_data.unique_strings.ensure(tense_or_number);
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format.pattern = locale_data.unique_strings.ensure(pattern.as_string());
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locale.time_units.append(locale_data.unique_formats.ensure(move(format)));
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};
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fields_object.as_object().for_each_member([&](auto const& unit_and_style, auto const& patterns) {
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auto segments = unit_and_style.split_view('-');
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auto unit = segments[0];
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auto style = (segments.size() > 1) ? segments[1] : "long"sv;
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if (!is_sanctioned_unit(unit))
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return;
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patterns.as_object().for_each_member([&](auto const& type, auto const& pattern_value) {
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constexpr auto number_key = "relative-type-"sv;
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constexpr auto tense_key = "relativeTime-type-"sv;
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constexpr auto plurality_key = "relativeTimePattern-count-"sv;
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if (type.starts_with(number_key)) {
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auto number = type.substring_view(number_key.length());
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parse_pattern(unit, style, "Other"sv, number, pattern_value);
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} else if (type.starts_with(tense_key)) {
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pattern_value.as_object().for_each_member([&](auto const& key, auto const& pattern) {
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VERIFY(key.starts_with(plurality_key));
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auto plurality = key.substring_view(plurality_key.length());
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auto tense = type.substring_view(tense_key.length());
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parse_pattern(unit, style, plurality, tense, pattern);
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});
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}
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});
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});
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return {};
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}
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static ErrorOr<void> parse_all_locales(String dates_path, UnicodeLocaleData& locale_data)
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{
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auto dates_iterator = TRY(path_to_dir_iterator(move(dates_path)));
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auto remove_variants_from_path = [&](String path) -> ErrorOr<String> {
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auto parsed_locale = TRY(CanonicalLanguageID<StringIndexType>::parse(locale_data.unique_strings, LexicalPath::basename(path)));
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StringBuilder builder;
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builder.append(locale_data.unique_strings.get(parsed_locale.language));
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if (auto script = locale_data.unique_strings.get(parsed_locale.script); !script.is_empty())
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builder.appendff("-{}", script);
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if (auto region = locale_data.unique_strings.get(parsed_locale.region); !region.is_empty())
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builder.appendff("-{}", region);
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return builder.build();
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};
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while (dates_iterator.has_next()) {
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auto dates_path = TRY(next_path_from_dir_iterator(dates_iterator));
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auto language = TRY(remove_variants_from_path(dates_path));
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auto& locale = locale_data.locales.ensure(language);
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TRY(parse_date_fields(move(dates_path), locale_data, locale));
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}
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return {};
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}
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static ErrorOr<void> generate_unicode_locale_header(Core::Stream::BufferedFile& file, UnicodeLocaleData&)
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{
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StringBuilder builder;
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SourceGenerator generator { builder };
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generator.append(R"~~~(
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#pragma once
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#include <LibUnicode/Forward.h>
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namespace Unicode {
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)~~~");
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generator.append(R"~~~(
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}
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)~~~");
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TRY(file.write(generator.as_string_view().bytes()));
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return {};
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}
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static ErrorOr<void> generate_unicode_locale_implementation(Core::Stream::BufferedFile& file, UnicodeLocaleData& locale_data)
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{
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StringBuilder builder;
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SourceGenerator generator { builder };
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generator.set("string_index_type"sv, s_string_index_type);
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generator.set("relative_time_format_index_type"sv, s_relative_time_format_index_type);
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generator.append(R"~~~(
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#include <AK/Array.h>
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#include <AK/StringView.h>
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#include <AK/Vector.h>
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#include <LibUnicode/Locale.h>
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#include <LibUnicode/PluralRules.h>
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#include <LibUnicode/RelativeTimeFormat.h>
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#include <LibUnicode/UnicodeRelativeTimeFormat.h>
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namespace Unicode {
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)~~~");
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locale_data.unique_strings.generate(generator);
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generator.append(R"~~~(
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struct RelativeTimeFormatImpl {
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RelativeTimeFormat to_relative_time_format() const
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{
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RelativeTimeFormat relative_time_format {};
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relative_time_format.plurality = plurality;
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relative_time_format.pattern = decode_string(pattern);
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return relative_time_format;
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}
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TimeUnit time_unit;
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Style style;
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PluralCategory plurality;
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@string_index_type@ tense_or_number { 0 };
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@string_index_type@ pattern { 0 };
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};
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)~~~");
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locale_data.unique_formats.generate(generator, "RelativeTimeFormatImpl"sv, "s_relative_time_formats"sv, 10);
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auto append_list = [&](String name, auto const& list) {
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generator.set("name", name);
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generator.set("size", String::number(list.size()));
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generator.append(R"~~~(
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static constexpr Array<@relative_time_format_index_type@, @size@> @name@ { {)~~~");
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bool first = true;
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for (auto index : list) {
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generator.append(first ? " "sv : ", "sv);
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generator.append(String::number(index));
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first = false;
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}
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generator.append(" } };");
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};
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generate_mapping(generator, locale_data.locales, s_relative_time_format_index_type, "s_locale_relative_time_formats"sv, "s_number_systems_digits_{}"sv, nullptr, [&](auto const& name, auto const& value) { append_list(name, value.time_units); });
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generator.append(R"~~~(
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Vector<RelativeTimeFormat> get_relative_time_format_patterns(StringView locale, TimeUnit time_unit, StringView tense_or_number, Style style)
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{
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Vector<RelativeTimeFormat> formats;
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auto locale_value = locale_from_string(locale);
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if (!locale_value.has_value())
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return formats;
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auto locale_index = to_underlying(*locale_value) - 1; // Subtract 1 because 0 == Locale::None.
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auto const& locale_formats = s_locale_relative_time_formats.at(locale_index);
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for (auto const& locale_format_index : locale_formats) {
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auto const& locale_format = s_relative_time_formats.at(locale_format_index);
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if (locale_format.time_unit != time_unit)
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continue;
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if (locale_format.style != style)
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continue;
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if (decode_string(locale_format.tense_or_number) != tense_or_number)
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continue;
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formats.append(locale_format.to_relative_time_format());
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}
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return formats;
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}
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}
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)~~~");
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TRY(file.write(generator.as_string_view().bytes()));
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return {};
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}
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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StringView generated_header_path;
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StringView generated_implementation_path;
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StringView dates_path;
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Core::ArgsParser args_parser;
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args_parser.add_option(generated_header_path, "Path to the Unicode locale header file to generate", "generated-header-path", 'h', "generated-header-path");
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args_parser.add_option(generated_implementation_path, "Path to the Unicode locale implementation file to generate", "generated-implementation-path", 'c', "generated-implementation-path");
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args_parser.add_option(dates_path, "Path to cldr-dates directory", "dates-path", 'd', "dates-path");
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args_parser.parse(arguments);
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auto generated_header_file = TRY(open_file(generated_header_path, Core::Stream::OpenMode::Write));
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auto generated_implementation_file = TRY(open_file(generated_implementation_path, Core::Stream::OpenMode::Write));
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UnicodeLocaleData locale_data;
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TRY(parse_all_locales(dates_path, locale_data));
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TRY(generate_unicode_locale_header(*generated_header_file, locale_data));
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TRY(generate_unicode_locale_implementation(*generated_implementation_file, locale_data));
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return 0;
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}
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