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LibTimeZone: Add methods to canonicalize a time zone name

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Timothy Flynn 2022-01-10 12:57:30 -05:00 • committed by Linus Groh
parent 1c2c98ac5d
commit e9c42d0bc5
3 changed files with 29 additions and 0 deletions
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13
Userland/Libraries/LibTimeZone/TimeZone.cpp
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@ -11,4 +11,17 @@ namespace TimeZone {
Optional<TimeZone> __attribute__((weak)) time_zone_from_string(StringView) { return {}; }
StringView __attribute__((weak)) time_zone_to_string(TimeZone) { return {}; }
Optional<StringView> canonicalize_time_zone(StringView time_zone)
{
auto maybe_time_zone = time_zone_from_string(time_zone);
if (!maybe_time_zone.has_value())
return {};
auto canonical_time_zone = time_zone_to_string(*maybe_time_zone);
if (canonical_time_zone.is_one_of("Etc/UTC"sv, "Etc/GMT"sv))
return "UTC"sv;
return canonical_time_zone;
}
}