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LibCore+LibJS+LibUnicode: Port retrieving available time zones to ICU

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This required updating some LibJS spec steps to their latest versions,
as the data expected by the old steps does not quite match the APIs that
are available with the ICU. The new spec steps are much more aligned.
This commit is contained in:
Timothy Flynn 2024-06-25 11:06:08 -04:00 • committed by Andreas Kling
commit 4fc0fba646
Notes: sideshowbarker 2024-07-17 18:06:52 +09:00
15 changed files with 259 additions and 103 deletions
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38
Userland/Libraries/LibJS/Runtime/Intl/Intl.cpp
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@ -1,11 +1,13 @@
/*
* Copyright (c) 2021-2023, Linus Groh <linusg@serenityos.org>
* Copyright (c) 2024, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/QuickSort.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/Date.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Intl/AbstractOperations.h>
#include <LibJS/Runtime/Intl/CollatorConstructor.h>
@ -21,7 +23,6 @@
#include <LibJS/Runtime/Intl/SegmenterConstructor.h>
#include <LibJS/Runtime/Intl/SingleUnitIdentifiers.h>
#include <LibJS/Runtime/Temporal/TimeZone.h>
#include <LibTimeZone/TimeZone.h>
#include <LibUnicode/DateTimeFormat.h>
#include <LibUnicode/Locale.h>
#include <LibUnicode/NumberFormat.h>
@ -82,32 +83,25 @@ JS_DEFINE_NATIVE_FUNCTION(Intl::get_canonical_locales)
return Array::create_from(realm, marked_locale_list);
}
// 6.5.4 AvailableCanonicalTimeZones ( ), https://tc39.es/ecma402/#sec-availablecanonicaltimezones
static Vector<StringView> available_canonical_time_zones()
// 6.5.4 AvailablePrimaryTimeZoneIdentifiers ( ), https://tc39.es/ecma402/#sec-availableprimarytimezoneidentifiers
static Vector<String> available_primary_time_zone_identifiers()
{
// 1. Let names be a List of all supported Zone and Link names in the IANA Time Zone Database.
auto names = TimeZone::all_time_zones();
// 1. Let records be AvailableNamedTimeZoneIdentifiers().
auto const& records = available_named_time_zone_identifiers();
// 2. Let result be a new empty List.
Vector<StringView> result;
Vector<String> result;
// 3. For each element name of names, do
for (auto const& name : names) {
// a. Assert: IsValidTimeZoneName( name ) is true.
// b. Let canonical be ! CanonicalizeTimeZoneName( name ).
auto canonical = TimeZone::canonicalize_time_zone(name.name).value();
// c. If result does not contain an element equal to canonical, then
if (!result.contains_slow(canonical)) {
// i. Append canonical to the end of result.
result.append(canonical);
// 3. For each element timeZoneIdentifierRecord of records, do
for (auto const& time_zone_identifier_record : records) {
// a. If timeZoneIdentifierRecord.[[Identifier]] is timeZoneIdentifierRecord.[[PrimaryIdentifier]], then
if (time_zone_identifier_record.identifier == time_zone_identifier_record.primary_identifier) {
// i. Append timeZoneIdentifierRecord.[[Identifier]] to result.
result.append(time_zone_identifier_record.identifier);
}
}
// 4. Sort result in order as if an Array of the same values had been sorted using %Array.prototype.sort% using undefined as comparefn.
quick_sort(result);
// 5. Return result.
// 4. Return result.
return result;
}
@ -143,8 +137,8 @@ JS_DEFINE_NATIVE_FUNCTION(Intl::supported_values_of)
}
// 6. Else if key is "timeZone", then
else if (key == "timeZone"sv) {
// a. Let list be ! AvailableCanonicalTimeZones( ).
static auto const time_zones = available_canonical_time_zones();
// a. Let list be ! AvailablePrimaryTimeZoneIdentifiers( ).
static auto const time_zones = available_primary_time_zone_identifiers();
list = time_zones.span();
}
// 7. Else if key is "unit", then