-- -----------------------------------------------------------------------------
--- $Id: Time.hsc,v 1.1 2001/01/12 16:16:36 simonmar Exp $
+-- $Id: Time.hsc,v 1.2 2001/01/12 16:40:07 simonmar Exp $
--
-- (c) The University of Glasgow, 1995-2001
--
# define tzname _tzname
# endif
# ifndef mingw32_TARGET_OS
-extern char *tzname[2];
+foreign label tzname :: Ptr (Ptr CChar)
# endif
-# define ZONE(x) (((struct tm *)x)->tm_isdst ? tzname[1] : tzname[0])
+zone x = do
+ dst <- (#peek struct tm,tm_isdst) x
+ if dst then peekArray tzname 1 else peekArray tzname 0
# else /* ! HAVE_TZNAME */
-/* We're in trouble. If you should end up here, please report this as a bug. */
+-- We're in trouble. If you should end up here, please report this as a bug.
# error Dont know how to get at timezone name on your OS.
# endif /* ! HAVE_TZNAME */
-/* Get the offset in secs from UTC, if (struct tm) doesn't supply it. */
+-- Get the offset in secs from UTC, if (struct tm) doesn't supply it. */
#if defined(mingw32_TARGET_OS) || defined(cygwin32_TARGET_OS)
#define timezone _timezone
#endif
-#if !defined(HAVE_TIMEZONE) && !defined(mingw32_TARGET_OS)
-extern TYPE_TIMEZONE timezone;
-#endif
-
# if HAVE_ALTZONE
-extern time_t altzone;
+foreign label altzone :: Ptr CTime
+foreign label timezone :: Ptr CTime
+gmtoff x = do
+ dst <- (#peek struct tm,tm_isdst) x
+ tz <- if dst then peek altzone else peek timezone
+ return (fromIntegral tz)
# define GMTOFF(x) (((struct tm *)x)->tm_isdst ? altzone : timezone )
# else /* ! HAVE_ALTZONE */
-/* Assume that DST offset is 1 hour ... */
-# define GMTOFF(x) (((struct tm *)x)->tm_isdst ? (timezone - 3600) : timezone )
+-- Assume that DST offset is 1 hour ...
+gmtoff x = do
+ dst <- (#peek struct tm,tm_isdst) x
+ tz <- peek timezone
+ if dst then return (fromIngtegral tz - 3600) else return tz
# endif /* ! HAVE_ALTZONE */
#endif /* ! HAVE_TM_ZONE */
toCalendarTime :: ClockTime -> IO CalendarTime
-toCalendarTime = clockToCalendarTime localtime
+toCalendarTime = clockToCalendarTime localtime False
toUTCTime :: ClockTime -> CalendarTime
-toUTCTime = unsafePerformIO . clockToCalendarTime gmtime
+toUTCTime = unsafePerformIO . clockToCalendarTime gmtime True
-- ToDo: should be made thread safe, because localtime uses static storage,
-- or use the localtime_r version.
-clockToCalendarTime :: (Ptr CTime -> IO (Ptr CTm)) -> ClockTime
+clockToCalendarTime :: (Ptr CTime -> IO (Ptr CTm)) -> Bool -> ClockTime
-> IO CalendarTime
-clockToCalendarTime fun (TOD secs psec) = do
+clockToCalendarTime fun is_utc (TOD secs psec) = do
withObject (fromIntegral secs :: CTime) $ \ p_timer -> do
p_tm <- fun p_timer -- can't fail, according to POSIX
sec <- (#peek struct tm,tm_sec ) p_tm :: IO CInt
psec
(toEnum (fromIntegral wday))
(fromIntegral yday)
- tzname
- (fromIntegral tz)
- (isdst /= 0))
+ (if is_utc then "UTC" else tzname)
+ (if is_utc then 0 else fromIntegral tz)
+ (if is_utc then False else isdst /= 0))
toClockTime :: CalendarTime -> ClockTime