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LibUnicode: Implement TR-35's localized GMT offset formatting

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This adds an API to use LibTimeZone to convert a time zone such as
"America/New_York" to a GMT offset string like "GMT-5" (short form) or
"GMT-05:00" (long form).
This commit is contained in:
Timothy Flynn 2022-01-11 11:35:50 -05:00 • committed by Linus Groh
parent 6409900a5b
commit 8d35563f28
Notes: sideshowbarker 2024-07-17 21:09:41 +09:00
5 changed files with 238 additions and 20 deletions
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62
Tests/LibUnicode/TestUnicodeDateTimeFormat.cpp
View file

@ -8,6 +8,7 @@
#include <AK/Array.h>
#include <AK/StringView.h>
#include <AK/Time.h>
#include <LibUnicode/DateTimeFormat.h>
TEST_CASE(time_zone_name)
@ -22,15 +23,11 @@ TEST_CASE(time_zone_name)
constexpr auto test_data = Array {
TestData { "en"sv, Unicode::CalendarPatternStyle::Long, "UTC"sv, "Coordinated Universal Time"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::Short, "UTC"sv, "UTC"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::ShortOffset, "UTC"sv, "GMT"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::LongOffset, "UTC"sv, "GMT"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::ShortGeneric, "UTC"sv, "GMT"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::LongGeneric, "UTC"sv, "GMT"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::Long, "UTC"sv, "التوقيت العالمي المنسق"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::Short, "UTC"sv, "UTC"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::ShortOffset, "UTC"sv, "غرينتش"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::LongOffset, "UTC"sv, "غرينتش"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::ShortGeneric, "UTC"sv, "غرينتش"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::LongGeneric, "UTC"sv, "غرينتش"sv },
@ -65,3 +62,60 @@ TEST_CASE(time_zone_name)
EXPECT_EQ(*time_zone, test.expected_result);
}
}
TEST_CASE(format_time_zone_offset)
{
constexpr auto jan_1_1833 = AK::Time::from_seconds(-4323283200); // Tuesday, January 1, 1833 12:00:00 AM
constexpr auto jan_1_2022 = AK::Time::from_seconds(1640995200); // Saturday, January 1, 2022 12:00:00 AM
struct TestData {
StringView locale;
Unicode::CalendarPatternStyle style;
AK::Time time;
StringView time_zone;
StringView expected_result;
};
constexpr auto test_data = Array {
TestData { "en"sv, Unicode::CalendarPatternStyle::ShortOffset, {}, "UTC"sv, "GMT"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::LongOffset, {}, "UTC"sv, "GMT"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::ShortOffset, {}, "UTC"sv, "غرينتش"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::LongOffset, {}, "UTC"sv, "غرينتش"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_1833, "America/Los_Angeles"sv, "GMT-7:52:58"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_2022, "America/Los_Angeles"sv, "GMT-8"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_1833, "America/Los_Angeles"sv, "GMT-07:52:58"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_2022, "America/Los_Angeles"sv, "GMT-08:00"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_1833, "America/Los_Angeles"sv, "غرينتش-٧:٥٢:٥٨"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_2022, "America/Los_Angeles"sv, "غرينتش-٨"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_1833, "America/Los_Angeles"sv, "غرينتش-٠٧:٥٢:٥٨"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_2022, "America/Los_Angeles"sv, "غرينتش-٠٨:٠٠"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_1833, "Europe/London"sv, "GMT-0:01:15"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_2022, "Europe/London"sv, "GMT"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_1833, "Europe/London"sv, "GMT-00:01:15"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_2022, "Europe/London"sv, "GMT"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_1833, "Europe/London"sv, "غرينتش-٠:٠١:١٥"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_2022, "Europe/London"sv, "غرينتش"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_1833, "Europe/London"sv, "غرينتش-٠٠:٠١:١٥"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_2022, "Europe/London"sv, "غرينتش"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_1833, "Asia/Kathmandu"sv, "GMT+5:41:16"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_2022, "Asia/Kathmandu"sv, "GMT+5:45"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_1833, "Asia/Kathmandu"sv, "GMT+05:41:16"sv },
TestData { "en"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_2022, "Asia/Kathmandu"sv, "GMT+05:45"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_1833, "Asia/Kathmandu"sv, "غرينتش+٥:٤١:١٦"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::ShortOffset, jan_1_2022, "Asia/Kathmandu"sv, "غرينتش+٥:٤٥"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_1833, "Asia/Kathmandu"sv, "غرينتش+٠٥:٤١:١٦"sv },
TestData { "ar"sv, Unicode::CalendarPatternStyle::LongOffset, jan_1_2022, "Asia/Kathmandu"sv, "غرينتش+٠٥:٤٥"sv },
};
for (auto const& test : test_data) {
auto time_zone = Unicode::format_time_zone(test.locale, test.time_zone, test.style, test.time);
EXPECT_EQ(time_zone, test.expected_result);
}
}