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/*
* Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Optional.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <AK/Variant.h>
#include <AK/Vector.h>
#include <LibUnicode/Forward.h>
namespace Unicode {
struct LanguageID {
bool is_root { false };
Optional<StringView> language {};
Optional<StringView> script {};
Optional<StringView> region {};
Vector<StringView> variants {};
};
struct Keyword {
StringView key {};
Vector<StringView> types {};
};
struct LocaleExtension {
Vector<StringView> attributes {};
Vector<Keyword> keywords {};
};
struct TransformedField {
StringView key;
Vector<StringView> values {};
};
struct TransformedExtension {
Optional<LanguageID> language {};
Vector<TransformedField> fields {};
};
struct OtherExtension {
char key {};
Vector<StringView> values {};
};
using Extension = Variant<LocaleExtension, TransformedExtension, OtherExtension>;
struct LocaleID {
LanguageID language_id {};
Vector<Extension> extensions {};
};
// Note: These methods only verify that the provided strings match the EBNF grammar of the
// Unicode identifier subtag (i.e. no validation is done that the tags actually exist).
bool is_unicode_language_subtag(StringView);
bool is_unicode_script_subtag(StringView);
bool is_unicode_region_subtag(StringView);
bool is_unicode_variant_subtag(StringView);
Optional<LanguageID> parse_unicode_language_id(StringView);
Optional<LocaleID> parse_unicode_locale_id(StringView);
Optional<String> canonicalize_unicode_locale_id(LocaleID&);
String const& default_locale();
bool is_locale_available(StringView locale);
Optional<StringView> get_locale_language_mapping(StringView locale, StringView language);
Optional<StringView> get_locale_territory_mapping(StringView locale, StringView territory);
Optional<StringView> get_locale_script_mapping(StringView locale, StringView script);
Optional<StringView> get_locale_currency_mapping(StringView locale, StringView currency);
}
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