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LibTimeZone: Add an API to retrieve both daylight and standard offsets

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This API will also include the formatted name of the time zone, with
respect for DST (e.g. EST vs EDT for America/New_York).
This commit is contained in:
Timothy Flynn 2022-01-24 12:36:17 -05:00 • committed by Linus Groh
parent fc0c88344b
commit 7103012c7d
4 changed files with 87 additions and 1 deletions
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22
Userland/Libraries/LibTimeZone/TimeZone.cpp
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@ -4,7 +4,6 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Array.h>
#include <AK/String.h>
#include <LibTimeZone/TimeZone.h>
#include <stdio.h>
@ -157,4 +156,25 @@ Optional<Offset> get_time_zone_offset(StringView time_zone, AK::Time time)
return {};
}
Optional<Array<NamedOffset, 2>> __attribute__((weak)) get_named_time_zone_offsets([[maybe_unused]] TimeZone time_zone, AK::Time)
{
#if !ENABLE_TIME_ZONE_DATA
VERIFY(time_zone == TimeZone::UTC);
NamedOffset utc_offset {};
utc_offset.name = "UTC"sv;
return Array { utc_offset, utc_offset };
#else
return {};
#endif
}
Optional<Array<NamedOffset, 2>> get_named_time_zone_offsets(StringView time_zone, AK::Time time)
{
if (auto maybe_time_zone = time_zone_from_string(time_zone); maybe_time_zone.has_value())
return get_named_time_zone_offsets(*maybe_time_zone, time);
return {};
}
}