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LibUnicode: Fallback to per-locale default calendars

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When patterns, symbols, etc. for a requested calendar are not found, use
the locale's default calendar.
This commit is contained in:
Timothy Flynn 2022-07-14 14:43:29 -04:00 committed by Andreas Kling
parent c849cb9d76
commit b24b9c0a65
Notes: sideshowbarker 2024-07-17 08:55:19 +09:00 
Author: https://github.com/trflynn89
Commit: https://github.com/SerenityOS/serenity/commit/b24b9c0a65
Pull-request: https://github.com/SerenityOS/serenity/pull/14585
1 changed files with 23 additions and 12 deletions
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35
Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeDateTimeFormat.cpp
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@ -2089,21 +2089,32 @@ static CalendarData const* find_calendar_data(StringView locale, StringView cale
if (!locale_value.has_value())
return nullptr;
auto calendar_keyword = keyword_ca_from_string(calendar);
if (!calendar_keyword.has_value())
return {};
auto calendar_value = keyword_to_calendar(*calendar_keyword);
if (!calendar_value.has_value())
return {};
auto locale_index = to_underlying(*locale_value) - 1; // Subtract 1 because 0 == Locale::None.
size_t calendar_index = to_underlying(*calendar_value);
auto const& calendar_indices = s_locale_calendars.at(locale_index);
calendar_index = calendar_indices[calendar_index];
return &s_calendars[calendar_index];
auto lookup_calendar = [&](auto calendar_name) -> CalendarData const* {
auto calendar_keyword = keyword_ca_from_string(calendar_name);
if (!calendar_keyword.has_value())
return nullptr;
auto calendar_value = keyword_to_calendar(*calendar_keyword);
if (!calendar_value.has_value())
return nullptr;
size_t calendar_index = to_underlying(*calendar_value);
calendar_index = calendar_indices[calendar_index];
return &s_calendars[calendar_index];
};
if (auto const* calendar_data = lookup_calendar(calendar))
return calendar_data;
auto default_calendar = get_preferred_keyword_value_for_locale(locale, "ca"sv);
if (!default_calendar.has_value())
return nullptr;
return lookup_calendar(*default_calendar);
}
Optional<CalendarFormat> get_calendar_date_format(StringView locale, StringView calendar)