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LibUnicode: Do not assume time zones & meta zones have a 1-to-1 mapping

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The generator parses metaZones.json to form a mapping of meta zones to
time zones (AKA "golden zone" in TR-35). This parser errantly assumed
this was a 1-to-1 mapping.
This commit is contained in:
Timothy Flynn
2022-01-06 10:40:18 -05:00
committed by Andreas Kling
parent 62d8d1fdfd
commit 6d7d9dd324
Notes: sideshowbarker 2024-07-17 21:31:51 +09:00 
Author: https://github.com/trflynn89
Commit: https://github.com/SerenityOS/serenity/commit/6d7d9dd3247
Pull-request: https://github.com/SerenityOS/serenity/pull/11669
Reviewed-by: https://github.com/linusg ✅
4 changed files with 83 additions and 10 deletions
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23
Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeDateTimeFormat.cpp
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@@ -519,7 +519,7 @@ struct UnicodeLocaleData {
HashMap<String, HourCycleListIndexType> hour_cycles;
Vector<String> hour_cycle_regions;
HashMap<String, String> meta_zones;
HashMap<String, Vector<String>> meta_zones;
Vector<String> time_zones { "UTC"sv };
Vector<String> calendars;
@@ -618,11 +618,12 @@ static ErrorOr<void> parse_meta_zones(String core_path, UnicodeLocaleData& local
auto const& meta_zone = mapping.as_object().get("_other"sv);
auto const& golden_zone = mapping.as_object().get("_type"sv);
locale_data.meta_zones.set(meta_zone.as_string(), golden_zone.as_string());
auto& golden_zones = locale_data.meta_zones.ensure(meta_zone.as_string());
golden_zones.append(golden_zone.as_string());
});
// UTC does not appear in metaZones.json. Define it for convenience so other parsers don't need to check for its existence.
locale_data.meta_zones.set("UTC"sv, "UTC"sv);
locale_data.meta_zones.set("UTC"sv, { "UTC"sv });
return {};
};
@@ -1402,7 +1403,7 @@ static ErrorOr<void> parse_time_zone_names(String locale_time_zone_names_path, U
time_zone_formats.gmt_zero_format = locale_data.unique_strings.ensure(gmt_zero_format_string.as_string());
auto parse_time_zone = [&](StringView meta_zone, JsonObject const& meta_zone_object) {
auto const& golden_zone = locale_data.meta_zones.find(meta_zone)->value;
auto const& golden_zones = locale_data.meta_zones.find(meta_zone)->value;
TimeZone time_zone {};
if (auto long_name = parse_name("long"sv, meta_zone_object); long_name.has_value())
@@ -1410,15 +1411,19 @@ static ErrorOr<void> parse_time_zone_names(String locale_time_zone_names_path, U
if (auto short_name = parse_name("short"sv, meta_zone_object); short_name.has_value())
time_zone.short_name = short_name.value();
auto time_zone_index = locale_data.time_zones.find_first_index(golden_zone).value();
time_zones[time_zone_index] = locale_data.unique_time_zones.ensure(move(time_zone));
for (auto const& golden_zone : golden_zones) {
auto time_zone_index = locale_data.time_zones.find_first_index(golden_zone).value();
time_zones[time_zone_index] = locale_data.unique_time_zones.ensure(move(time_zone));
}
};
meta_zone_object.as_object().for_each_member([&](auto const& meta_zone, JsonValue const&) {
auto const& golden_zone = locale_data.meta_zones.find(meta_zone)->value;
auto const& golden_zones = locale_data.meta_zones.find(meta_zone)->value;
if (!locale_data.time_zones.contains_slow(golden_zone))
locale_data.time_zones.append(golden_zone);
for (auto const& golden_zone : golden_zones) {
if (!locale_data.time_zones.contains_slow(golden_zone))
locale_data.time_zones.append(golden_zone);
}
});
time_zones.resize(locale_data.time_zones.size());