%
-% (c) The GRASP/AQUA Project, Glasgow University, 1995-97
+% (c) The GRASP/AQUA Project, Glasgow University, 1995-99
%
\section[Time]{Haskell 1.4 Time of Day Library}
\begin{code}
{-# OPTIONS -#include "cbits/timezone.h" -#include "cbits/stgio.h" #-}
module Time
- (
- Month(..),
- Day(..),
+ (
+ Month(..)
+ , Day(..)
- ClockTime(..), -- non-standard, lib. report gives this as abstract
- getClockTime,
+ , ClockTime(..) -- non-standard, lib. report gives this as abstract
+ , getClockTime
- TimeDiff(TimeDiff),
- diffClockTimes,
- addToClockTime,
- timeDiffToString, -- non-standard
- formatTimeDiff, -- non-standard
+ , TimeDiff(..)
+ , diffClockTimes
+ , addToClockTime
- CalendarTime(CalendarTime),
- toCalendarTime,
- toUTCTime,
- toClockTime,
- calendarTimeToString,
- formatCalendarTime
+ , timeDiffToString -- non-standard
+ , formatTimeDiff -- non-standard
- ) where
+ , CalendarTime(..)
+ , toCalendarTime
+ , toUTCTime
+ , toClockTime
+ , calendarTimeToString
+ , formatCalendarTime
+ ) where
+
+#ifdef __HUGS__
+import PreludeBuiltin
+#else
import PrelBase
+import PrelShow
import PrelIOBase
+import PrelHandle
import PrelArr
import PrelST
import PrelAddr
import PrelPack ( unpackCString )
+#endif
import Ix
import Char ( intToDigit )
deriving (Eq, Ord, Enum, Bounded, Ix, Read, Show)
data Day
- = Sunday | Monday | Tuesday | Wednesday
+ = Sunday | Monday | Tuesday | Wednesday
| Thursday | Friday | Saturday
deriving (Eq, Ord, Enum, Bounded, Ix, Read, Show)
external calendar time @CalendarTime@.
\begin{code}
+#ifdef __HUGS__
+-- I believe Int64 is more than big enough.
+-- In fact, I think one of Int32 or Word32 would do. - ADR
+data ClockTime = TOD Int64 Int64 deriving (Eq, Ord)
+#else
data ClockTime = TOD Integer Integer deriving (Eq, Ord)
+#endif
\end{code}
When a @ClockTime@ is shown, it is converted to a string of the form
we use the C library routines based on 32 bit integers.
\begin{code}
+#ifdef __HUGS__
+#warning Show ClockTime is bogus
+instance Show ClockTime
+#else
instance Show ClockTime where
- showsPrec p (TOD sec@(J# a# s# d#) nsec) =
+ showsPrec p (TOD (S# i) _nsec) =
+ case int2Integer# i of (# s, d #) -> showsPrec p (TOD (J# s d) _nsec)
+ showsPrec _ (TOD (J# s# d#) _nsec) =
showString $ unsafePerformIO $ do
- buf <- allocChars 32
+ buf <- allocChars 38 -- exactly enough for error message
str <- _ccall_ showTime (I# s#) d# buf
return (unpackCString str)
showList = showList__ (showsPrec 0)
+#endif
\end{code}
ctHour :: Int,
ctMin :: Int,
ctSec :: Int,
+#ifdef __HUGS__
+ ctPicosec :: Int64,
+#else
ctPicosec :: Integer,
+#endif
ctWDay :: Day,
ctYDay :: Int,
ctTZName :: String,
tdHour :: Int,
tdMin :: Int,
tdSec :: Int,
+#ifdef __HUGS__
+ tdPicosec :: Int64 -- not standard
+#else
tdPicosec :: Integer -- not standard
+#endif
}
deriving (Eq,Ord,Read,Show)
\end{code}
@getClockTime@ returns the current time in its internal representation.
\begin{code}
+#ifdef __HUGS__
getClockTime :: IO ClockTime
getClockTime = do
i1 <- malloc1
i2 <- malloc1
- rc <- _ccall_ getClockTime i1 i2
+ rc <- prim_getClockTime i1 i2
if rc == 0
then do
sec <- cvtUnsigned i1
else
constructErrorAndFail "getClockTime"
where
+ malloc1 = primNewByteArray sizeof_int64
+ cvtUnsigned arr = primReadInt64Array arr 0
+#else
+getClockTime :: IO ClockTime
+getClockTime = do
+ i1 <- malloc1
+ i2 <- malloc1
+ rc <- _ccall_ getClockTime i1 i2
+ if rc == (0 ::Int)
+ then do
+ sec <- cvtUnsigned i1
+ nsec <- cvtUnsigned i2
+ return (TOD sec (nsec * 1000))
+ else
+ constructErrorAndFail "getClockTime"
+ where
malloc1 = IO $ \ s# ->
case newIntArray# 1# s# of
- StateAndMutableByteArray# s2# barr# ->
- IOok s2# (MutableByteArray bottom barr#)
+ (# s2#, barr# #) ->
+ (# s2#, MutableByteArray bottom barr# #)
-- The C routine fills in an unsigned word. We don't have
-- `unsigned2Integer#,' so we freeze the data bits and use them
-- for an MP_INT structure. Note that zero is still handled specially,
- -- although (J# 1# 1# (ptr to 0#)) is probably acceptable to gmp.
+ -- although (J# 1# (ptr to 0#)) is probably acceptable to gmp.
cvtUnsigned (MutableByteArray _ arr#) = IO $ \ s# ->
case readIntArray# arr# 0# s# of
- StateAndInt# s2# r# ->
+ (# s2#, r# #) ->
if r# ==# 0#
- then IOok s2# 0
+ then (# s2#, 0 #)
else case unsafeFreezeByteArray# arr# s2# of
- StateAndByteArray# s3# frozen# ->
- IOok s3# (J# 1# 1# frozen#)
-
+ (# s3#, frozen# #) ->
+ (# s3#, J# 1# frozen# #)
+#endif
\end{code}
@addToClockTime@ {\em d} {\em t} adds a time difference {\em d} and a
\begin{code}
+#ifdef __HUGS__
+addToClockTime :: TimeDiff -> ClockTime -> ClockTime
+addToClockTime (TimeDiff year mon day hour min sec psec)
+ (TOD c_sec c_psec) = unsafePerformIO $ do
+ res <- allocWords sizeof_int64
+ rc <- prim_toClockSec year mon day hour min sec 0 res
+ if rc /= (0::Int)
+ then do
+ diff_sec <- primReadInt64Array res 0
+ let diff_psec = psec
+ return (TOD (c_sec + diff_sec) (c_psec + diff_psec))
+ else
+ error "Time.addToClockTime: can't perform conversion of TimeDiff"
+#else
addToClockTime :: TimeDiff -> ClockTime -> ClockTime
addToClockTime (TimeDiff year mon day hour min sec psec)
(TOD c_sec c_psec) = unsafePerformIO $ do
res <- allocWords (``sizeof(time_t)'')
- ptr <- _ccall_ toClockSec year mon day hour min sec 0 res
+ ptr <- _ccall_ toClockSec year mon day hour min sec (0::Int) res
let (A# ptr#) = ptr
if ptr /= nullAddr
then let
- diff_sec = (int2Integer# (indexIntOffAddr# ptr# 0#))
+ diff_sec = (int2Integer (indexIntOffAddr# ptr# 0#))
diff_psec = psec
in
return (TOD (c_sec + diff_sec) (c_psec + diff_psec))
else
error "Time.addToClockTime: can't perform conversion of TimeDiff"
-
+#endif
diffClockTimes :: ClockTime -> ClockTime -> TimeDiff
diffClockTimes tod_a tod_b =
ignored.
\begin{code}
+#ifdef __HUGS__
+toCalendarTime :: ClockTime -> IO CalendarTime
+toCalendarTime (TOD sec psec) = do
+ res <- allocWords sizeof_int64
+ zoneNm <- allocChars 32
+ prim_SETZONE res zoneNm
+ rc <- prim_toLocalTime sec res
+ if rc /= 0
+ then constructErrorAndFail "Time.toCalendarTime: out of range"
+ else do
+ sec <- get_tm_sec res
+ min <- get_tm_min res
+ hour <- get_tm_hour res
+ mday <- get_tm_mday res
+ mon <- get_tm_mon res
+ year <- get_tm_year res
+ wday <- get_tm_wday res
+ yday <- get_tm_yday res
+ isdst <- get_tm_isdst res
+ zone <- prim_ZONE res
+ tz <- prim_GMTOFF res
+ tzname <- primUnpackCString zone
+ return (CalendarTime (1900+year) mon mday hour min sec psec
+ (toEnum wday) yday tzname tz (isdst /= 0))
+
+toUTCTime :: ClockTime -> CalendarTime
+toUTCTime (TOD sec psec) = unsafePerformIO $ do
+ res <- allocWords sizeof_int64
+ zoneNm <- allocChars 32
+ prim_SETZONE res zoneNm
+ rc <- prim_toUTCTime sec res
+ if rc /= 0
+ then error "Time.toUTCTime: out of range"
+ else do
+ sec <- get_tm_sec res
+ min <- get_tm_min res
+ hour <- get_tm_hour res
+ mday <- get_tm_mday res
+ mon <- get_tm_mon res
+ year <- get_tm_year res
+ wday <- get_tm_wday res
+ yday <- get_tm_yday res
+ return (CalendarTime (1900+year) mon mday hour min sec psec
+ (toEnum wday) yday "UTC" 0 False)
+
+toClockTime :: CalendarTime -> ClockTime
+toClockTime (CalendarTime year mon mday hour min sec psec wday yday tzname tz isdst) =
+ if psec < 0 || psec > 999999999999 then
+ error "Time.toClockTime: picoseconds out of range"
+ else if tz < -43200 || tz > 43200 then
+ error "Time.toClockTime: timezone offset out of range"
+ else
+ unsafePerformIO ( do
+ res <- allocWords sizeof_int64
+ rc <- prim_toClockSec year mon mday hour min sec isDst res
+ if rc /= (0::Int)
+ then do
+ tm <- primReadInt64Array res 0
+ return (TOD tm psec)
+ else error "Time.toClockTime: can't perform conversion"
+ )
+ where
+ isDst = if isdst then (1::Int) else 0
+#else
toCalendarTime :: ClockTime -> IO CalendarTime
-toCalendarTime (TOD sec@(J# a# s# d#) psec) = do
+toCalendarTime (TOD (S# i) psec)
+ = case int2Integer# i of (# s, d #) -> toCalendarTime (TOD (J# s d) psec)
+toCalendarTime (TOD (J# s# d#) psec) = do
res <- allocWords (``sizeof(struct tm)''::Int)
zoneNm <- allocChars 32
_casm_ ``SETZONE((struct tm *)%0,(char *)%1); '' res zoneNm
wday <- _casm_ ``%r = ((struct tm *)%0)->tm_wday;'' tm
yday <- _casm_ ``%r = ((struct tm *)%0)->tm_yday;'' tm
isdst <- _casm_ ``%r = ((struct tm *)%0)->tm_isdst;'' tm
- zone <- _ccall_ ZONE tm
+ zone <- _ccall_ get_ZONE tm
tz <- _ccall_ GMTOFF tm
let tzname = unpackCString zone
return (CalendarTime (1900+year) mon mday hour min sec psec
- (toEnum wday) yday tzname tz (isdst /= 0))
+ (toEnum wday) yday tzname tz (isdst /= (0::Int)))
toUTCTime :: ClockTime -> CalendarTime
-toUTCTime (TOD sec@(J# a# s# d#) psec) = unsafePerformIO $ do
+toUTCTime (TOD (S# i) psec)
+ = case int2Integer# i of (# s, d #) -> toUTCTime (TOD (J# s d) psec)
+toUTCTime (TOD (J# s# d#) psec) = unsafePerformIO $ do
res <- allocWords (``sizeof(struct tm)''::Int)
zoneNm <- allocChars 32
_casm_ ``SETZONE((struct tm *)%0,(char *)%1); '' res zoneNm
tm <- _ccall_ toUTCTime (I# s#) d# res
- if tm == (``NULL''::Addr)
+ if tm == nullAddr
then error "Time.toUTCTime: out of range"
else do
sec <- _casm_ ``%r = ((struct tm *)%0)->tm_sec;'' tm
(toEnum wday) yday "UTC" 0 False)
toClockTime :: CalendarTime -> ClockTime
-toClockTime (CalendarTime year mon mday hour min sec psec wday yday tzname tz isdst) =
+toClockTime (CalendarTime year mon mday hour min sec psec _wday _yday _tzname tz isdst) =
if psec < 0 || psec > 999999999999 then
error "Time.toClockTime: picoseconds out of range"
else if tz < -43200 || tz > 43200 then
res <- allocWords (``sizeof(time_t)'')
ptr <- _ccall_ toClockSec year mon mday hour min sec isDst res
let (A# ptr#) = ptr
- if ptr /= ``NULL''
- then return (TOD (int2Integer# (indexIntOffAddr# ptr# 0#)) psec)
+ if ptr /= nullAddr
+ then return (TOD (int2Integer (indexIntOffAddr# ptr# 0#)) psec)
else error "Time.toClockTime: can't perform conversion"
)
where
isDst = if isdst then (1::Int) else 0
+#endif
bottom :: (Int,Int)
bottom = error "Time.bottom"
-- (copied from PosixUtil, for now)
-- Allocate a mutable array of characters with no indices.
+#ifdef __HUGS__
+allocChars :: Int -> IO (PrimMutableByteArray RealWorld)
+allocChars size = primNewByteArray size
+
+-- Allocate a mutable array of words with no indices
+
+allocWords :: Int -> IO (PrimMutableByteArray RealWorld)
+allocWords size = primNewByteArray size
+#else
allocChars :: Int -> IO (MutableByteArray RealWorld ())
allocChars (I# size#) = IO $ \ s# ->
case newCharArray# size# s# of
- StateAndMutableByteArray# s2# barr# ->
- IOok s2# (MutableByteArray bot barr#)
+ (# s2#, barr# #) ->
+ (# s2#, MutableByteArray bot barr# #)
where
bot = error "Time.allocChars"
allocWords :: Int -> IO (MutableByteArray RealWorld ())
allocWords (I# size#) = IO $ \ s# ->
case newIntArray# size# s# of
- StateAndMutableByteArray# s2# barr# ->
- IOok s2# (MutableByteArray bot barr#)
+ (# s2#, barr# #) ->
+ (# s2#, MutableByteArray bot barr# #)
where
bot = error "Time.allocWords"
-
+#endif
\end{code}
\begin{code}
calendarTimeToString = formatCalendarTime defaultTimeLocale "%c"
formatCalendarTime :: TimeLocale -> String -> CalendarTime -> String
-formatCalendarTime l fmt ct@(CalendarTime year mon day hour min sec sdec
- wday yday tzname _ _) =
+formatCalendarTime l fmt (CalendarTime year mon day hour min sec _
+ wday yday tzname _ _) =
doFmt fmt
where doFmt ('%':c:cs) = decode c ++ doFmt cs
doFmt (c:cs) = c : doFmt cs
doFmt "" = ""
- decode 'A' = fst (wDays l !! fromEnum wday)
- decode 'a' = snd (wDays l !! fromEnum wday)
- decode 'B' = fst (months l !! fromEnum mon)
- decode 'b' = snd (months l !! fromEnum mon)
- decode 'h' = snd (months l !! fromEnum mon)
- decode 'C' = show2 (year `quot` 100)
- decode 'c' = doFmt (dateTimeFmt l)
+ decode 'A' = fst (wDays l !! fromEnum wday) -- day of the week, full name
+ decode 'a' = snd (wDays l !! fromEnum wday) -- day of the week, abbrev.
+ decode 'B' = fst (months l !! fromEnum mon) -- month, full name
+ decode 'b' = snd (months l !! fromEnum mon) -- month, abbrev
+ decode 'h' = snd (months l !! fromEnum mon) -- ditto
+ decode 'C' = show2 (year `quot` 100) -- century
+ decode 'c' = doFmt (dateTimeFmt l) -- locale's data and time format.
decode 'D' = doFmt "%m/%d/%y"
- decode 'd' = show2 day
- decode 'e' = show2' day
- decode 'H' = show2 hour
- decode 'I' = show2 (to12 hour)
- decode 'j' = show3 yday
- decode 'k' = show2' hour
- decode 'l' = show2' (to12 hour)
- decode 'M' = show2 min
- decode 'm' = show2 (fromEnum mon+1)
+ decode 'd' = show2 day -- day of the month
+ decode 'e' = show2' day -- ditto, padded
+ decode 'H' = show2 hour -- hours, 24-hour clock, padded
+ decode 'I' = show2 (to12 hour) -- hours, 12-hour clock
+ decode 'j' = show3 yday -- day of the year
+ decode 'k' = show2' hour -- hours, 24-hour clock, no padding
+ decode 'l' = show2' (to12 hour) -- hours, 12-hour clock, no padding
+ decode 'M' = show2 min -- minutes
+ decode 'm' = show2 (fromEnum mon+1) -- numeric month
decode 'n' = "\n"
- decode 'p' = (if hour < 12 then fst else snd) (amPm l)
+ decode 'p' = (if hour < 12 then fst else snd) (amPm l) -- am or pm
decode 'R' = doFmt "%H:%M"
decode 'r' = doFmt (time12Fmt l)
decode 'T' = doFmt "%H:%M:%S"
decode 't' = "\t"
- decode 'S' = show2 sec
- decode 's' = show2 sec -- Implementation-dependent, sez the lib doc..
- decode 'U' = show2 ((yday + 7 - fromEnum wday) `div` 7)
- decode 'u' = show (let n = fromEnum wday in
+ decode 'S' = show2 sec -- seconds
+ decode 's' = show2 sec -- number of secs since Epoch. (ToDo.)
+ decode 'U' = show2 ((yday + 7 - fromEnum wday) `div` 7) -- week number, starting on Sunday.
+ decode 'u' = show (let n = fromEnum wday in -- numeric day of the week (1=Monday, 7=Sunday)
if n == 0 then 7 else n)
- decode 'V' =
- let (week, days) =
+ decode 'V' = -- week number (as per ISO-8601.)
+ let (week, days) = -- [yep, I've always wanted to be able to display that too.]
(yday + 7 - if fromEnum wday > 0 then
fromEnum wday - 1 else 6) `divMod` 7
in show2 (if days >= 4 then
week+1
else if week == 0 then 53 else week)
- decode 'W' =
+ decode 'W' = -- week number, weeks starting on monday
show2 ((yday + 7 - if fromEnum wday > 0 then
fromEnum wday - 1 else 6) `div` 7)
- decode 'w' = show (fromEnum wday)
- decode 'X' = doFmt (timeFmt l)
- decode 'x' = doFmt (dateFmt l)
- decode 'Y' = show year
- decode 'y' = show2 (year `rem` 100)
- decode 'Z' = tzname
+ decode 'w' = show (fromEnum wday) -- numeric day of the week, weeks starting on Sunday.
+ decode 'X' = doFmt (timeFmt l) -- locale's preferred way of printing time.
+ decode 'x' = doFmt (dateFmt l) -- locale's preferred way of printing dates.
+ decode 'Y' = show year -- year, including century.
+ decode 'y' = show2 (year `rem` 100) -- year, within century.
+ decode 'Z' = tzname -- timezone name
decode '%' = "%"
decode c = [c]
+
show2, show2', show3 :: Int -> String
show2 x = [intToDigit (x `quot` 10), intToDigit (x `rem` 10)]
show3 x = intToDigit (x `quot` 100) : show2 (x `rem` 100)
-to12 h = let h' = h `mod` 12 in if h == 0 then 12 else h
+to12 :: Int -> Int
+to12 h = let h' = h `mod` 12 in if h' == 0 then 12 else h'
\end{code}
+Useful extensions for formatting TimeDiffs.
+
\begin{code}
timeDiffToString :: TimeDiff -> String
timeDiffToString = formatTimeDiff defaultTimeLocale "%c"
formatTimeDiff :: TimeLocale -> String -> TimeDiff -> String
-formatTimeDiff l fmt ct@(TimeDiff year month day hour min sec psec)
+formatTimeDiff l fmt (TimeDiff year month day hour min sec _)
= doFmt fmt
where
doFmt "" = ""
c -> [c]
\end{code}
+
+\begin{code}
+#ifdef __HUGS__
+foreign import ccall "libHS_cbits.so" "get_tm_sec" get_tm_sec :: Bytes -> IO Int
+foreign import ccall "libHS_cbits.so" "get_tm_min" get_tm_min :: Bytes -> IO Int
+foreign import ccall "libHS_cbits.so" "get_tm_hour" get_tm_hour :: Bytes -> IO Int
+foreign import ccall "libHS_cbits.so" "get_tm_mday" get_tm_mday :: Bytes -> IO Int
+foreign import ccall "libHS_cbits.so" "get_tm_mon" get_tm_mon :: Bytes -> IO Int
+foreign import ccall "libHS_cbits.so" "get_tm_year" get_tm_year :: Bytes -> IO Int
+foreign import ccall "libHS_cbits.so" "get_tm_wday" get_tm_wday :: Bytes -> IO Int
+foreign import ccall "libHS_cbits.so" "get_tm_yday" get_tm_yday :: Bytes -> IO Int
+foreign import ccall "libHS_cbits.so" "get_tm_isdst" get_tm_isdst :: Bytes -> IO Int
+
+foreign import ccall "libHS_cbits.so" "prim_ZONE" prim_ZONE :: Bytes -> IO Addr
+foreign import ccall "libHS_cbits.so" "prim_GMTOFF" prim_GMTOFF :: Bytes -> IO Int
+
+foreign import ccall "libHS_cbits.so" "prim_SETZONE" prim_SETZONE :: Bytes -> Bytes -> IO Int
+
+foreign import ccall "libHS_cbits.so" "sizeof_word" sizeof_word :: Int
+foreign import ccall "libHS_cbits.so" "sizeof_struct_tm" sizeof_struct_tm :: Int
+foreign import ccall "libHS_cbits.so" "sizeof_time_t" sizeof_time_t :: Int
+
+-- believed to be at least 1 bit (the sign bit!) bigger than sizeof_time_t
+sizeof_int64 :: Int
+sizeof_int64 = 8
+
+foreign import ccall "libHS_cbits.so" "prim_getClockTime" prim_getClockTime :: Bytes -> Bytes -> IO Int
+foreign import ccall "libHS_cbits.so" "prim_toClockSec" prim_toClockSec :: Int -> Int -> Int -> Int -> Int -> Int -> Int -> Bytes -> IO Int
+foreign import ccall "libHS_cbits.so" "prim_toLocalTime" prim_toLocalTime :: Int64 -> Bytes -> IO Int
+foreign import ccall "libHS_cbits.so" "prim_toUTCTime" prim_toUTCTime :: Int64 -> Bytes -> IO Int
+#endif
+\end{code}
projects / ghc-hetmet.git / blobdiff