factor/basis/calendar/windows/windows.factor

14 lines
523 B
Factor

USING: calendar namespaces alien.c-types system
windows.kernel32 kernel math combinators windows.errors
accessors classes.struct ;
IN: calendar.windows
M: windows gmt-offset ( -- hours minutes seconds )
TIME_ZONE_INFORMATION <struct>
dup GetTimeZoneInformation {
{ TIME_ZONE_ID_INVALID [ win32-error-string throw ] }
{ TIME_ZONE_ID_UNKNOWN [ Bias>> ] }
{ TIME_ZONE_ID_STANDARD [ Bias>> ] }
{ TIME_ZONE_ID_DAYLIGHT [ [ Bias>> ] [ DaylightBias>> ] bi + ] }
} case neg 60 /mod 0 ;