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LibUnicode: Add special handling of hour cycle (hc) Unicode keywords

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For other keywords, allowed values per locale are generated at compile
time. But since the CLDR doesn't present hour cycles on a per-locale
basis, and hour cycles lookups depend on runtime data, we must handle
hour cycle keyword lookups differently than other keywords.
This commit is contained in:
Timothy Flynn 2021-11-28 17:28:14 -05:00 • committed by Linus Groh
parent 71903ea7e1
commit 6dbdfb6ba1
1 changed files with 13 additions and 0 deletions
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13
Userland/Libraries/LibUnicode/Locale.cpp
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@ -9,6 +9,7 @@
#include <AK/QuickSort.h>
#include <AK/StringBuilder.h>
#include <LibUnicode/CharacterTypes.h>
#include <LibUnicode/DateTimeFormat.h>
#include <LibUnicode/Locale.h>
#if ENABLE_UNICODE_DATA
@ -806,6 +807,18 @@ Optional<StringView> get_locale_currency_mapping([[maybe_unused]] StringView loc
Vector<StringView> get_locale_key_mapping([[maybe_unused]] StringView locale, [[maybe_unused]] StringView keyword)
{
#if ENABLE_UNICODE_DATA
if (keyword == "hc"sv) {
auto hour_cycles = get_regional_hour_cycles(locale);
Vector<StringView> values;
values.ensure_capacity(hour_cycles.size());
for (auto hour_cycle : hour_cycles)
values.unchecked_append(hour_cycle_to_string(hour_cycle));
return values;
}
if (auto values = Detail::get_locale_key_mapping(locale, keyword); values.has_value())
return values->split_view(',');
#endif