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If the Library as you +received it does not specify a version number of the GNU Lesser +General Public License, you may choose any version of the GNU Lesser +General Public License ever published by the Free Software Foundation. + + If the Library as you received it specifies that a proxy can decide +whether future versions of the GNU Lesser General Public License shall +apply, that proxy's public statement of acceptance of any version is +permanent authorization for you to choose that version for the +Library. diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,2 @@ +import Distribution.Simple +main = defaultMain diff --git a/System/Locale/Current.hs b/System/Locale/Current.hs new file mode 100644 --- /dev/null +++ b/System/Locale/Current.hs @@ -0,0 +1,102 @@ +{-# LANGUAGE ForeignFunctionInterface #-} +module System.Locale.Current + ( getDay + , getABDay + + , getMon + , getABMon + + , getAM + , getPM + + , getDTFMT + , getDFMT + , getTFMT + , getT12FMT + + , currentLocale + ) +where + +import System.Locale (TimeLocale(..), defaultTimeLocale) + +import Foreign.C.String (peekCString) +import Foreign.C.Types (CInt(..), CChar(..)) +import Foreign.Ptr (Ptr) + +foreign import ccall unsafe "get_day" get_day :: CInt -> IO (Ptr CChar) +foreign import ccall unsafe "get_abday" get_abday :: CInt -> IO (Ptr CChar) + +foreign import ccall unsafe "get_mon" get_mon :: CInt -> IO (Ptr CChar) +foreign import ccall unsafe "get_abmon" get_abmon :: CInt -> IO (Ptr CChar) + +foreign import ccall unsafe "get_am" get_am :: IO (Ptr CChar) +foreign import ccall unsafe "get_pm" get_pm :: IO (Ptr CChar) + +foreign import ccall unsafe "get_d_t_fmt" get_d_t_fmt :: IO (Ptr CChar) + +foreign import ccall unsafe "get_t_fmt" get_t_fmt :: IO (Ptr CChar) +foreign import ccall unsafe "get_d_fmt" get_d_fmt :: IO (Ptr CChar) + +foreign import ccall unsafe "get_12h_fmt" get_12h_fmt :: IO (Ptr CChar) + +foreign import ccall unsafe "prepare_locale" prepare_locale :: IO () + + +getDay :: Int -> IO String +getDay i = peekCString =<< get_day (fromIntegral i) + +getABDay :: Int -> IO String +getABDay i = peekCString =<< get_abday (fromIntegral i) + +getMon :: Int -> IO String +getMon i = peekCString =<< get_mon (fromIntegral i) + +getABMon :: Int -> IO String +getABMon i = peekCString =<< get_abmon (fromIntegral i) + +getAM :: IO String +getAM = peekCString =<< get_am + +getPM :: IO String +getPM = peekCString =<< get_pm + +getDTFMT :: IO String +getDTFMT = peekCString =<< get_d_t_fmt + +getDFMT :: IO String +getDFMT = peekCString =<< get_d_fmt + +getTFMT :: IO String +getTFMT = peekCString =<< get_t_fmt + +getT12FMT :: IO String +getT12FMT = peekCString =<< get_12h_fmt + +currentLocale :: IO TimeLocale +currentLocale = do + prepare_locale + + abDays <- mapM getABDay [1..7] + days <- mapM getDay [1..7] + + abMons <- mapM getABMon [1..12] + mons <- mapM getMon [1..12] + + am <- getAM + pm <- getPM + + dt <- getDTFMT + d <- getDFMT + t <- getTFMT + t12 <- getT12FMT + + return $ defaultTimeLocale + { wDays = zip days abDays + , months = zip mons abMons + , amPm = (am, pm) + , dateTimeFmt = dt + , dateFmt = d + , timeFmt = t + , time12Fmt = t12 + } diff --git a/cbits/glue.c b/cbits/glue.c new file mode 100644 --- /dev/null +++ b/cbits/glue.c @@ -0,0 +1,136 @@ +#include +#include +#include +#include + +void +prepare_locale(void) +{ + setlocale(LC_ALL, ""); +} + +char * +get_day(int i) +{ +#define DAY(x) case x: return nl_langinfo(DAY_ ## x ); break; + switch (i) + { + DAY(1) + DAY(2) + DAY(3) + DAY(4) + DAY(5) + DAY(6) + DAY(7) + default: + fprintf(stderr, "Tried to call get_day() with bogus day: %d\n", i); + exit(-1); + } +#undef DAY +} + +char * +get_abday(int i) +{ +#define ABDAY(x) case x: return nl_langinfo(ABDAY_ ## x ); break; + switch (i) + { + ABDAY(1) + ABDAY(2) + ABDAY(3) + ABDAY(4) + ABDAY(5) + ABDAY(6) + ABDAY(7) + default: + fprintf(stderr, "Tried to call get_abday() with bogus day: %d\n", i); + exit(-1); + } +#undef ABDAY +} + +char * +get_mon(int i) +{ +#define MON(x) case x: return nl_langinfo(MON_ ## x ); break; + switch (i) + { + MON(1) + MON(2) + MON(3) + MON(4) + MON(5) + MON(6) + MON(7) + MON(8) + MON(9) + MON(10) + MON(11) + MON(12) + default: + fprintf(stderr, "Tried to call get_mon() with bogus month: %d\n", i); + exit(-1); + } +#undef MON +} + +char * +get_abmon(int i) +{ +#define ABMON(x) case x: return nl_langinfo(ABMON_ ## x ); break; + switch (i) + { + ABMON(1) + ABMON(2) + ABMON(3) + ABMON(4) + ABMON(5) + ABMON(6) + ABMON(7) + ABMON(8) + ABMON(9) + ABMON(10) + ABMON(11) + ABMON(12) + default: + fprintf(stderr, "Tried to call get_abmon() with bogus month: %d\n", i); + exit(-1); + } +#undef MON +} + +char * +get_am(void) +{ + return nl_langinfo(AM_STR); +} + +char * +get_pm(void) +{ + return nl_langinfo(PM_STR); +} + +char * +get_d_t_fmt(void) +{ + return nl_langinfo(D_T_FMT); +} + +char * +get_t_fmt(void) +{ + return nl_langinfo(T_FMT); +} + +char * +get_d_fmt(void) +{ + return nl_langinfo(D_FMT); +} + +char * +get_12h_fmt(void) +{ + return nl_langinfo(T_FMT_AMPM); +} diff --git a/env-locale.cabal b/env-locale.cabal new file mode 100644 --- /dev/null +++ b/env-locale.cabal @@ -0,0 +1,29 @@ +Name: env-locale +Version: 1.0.0.0 +Synopsis: A (non-forking) interface to the current locale +Description: A sane way to get the time locale defined by environment +Homepage: https://github.com/Ongy/locale-hs +License: LGPL +License-file: LICENSE +Author: Markus Ongyerth +Maintainer: Markus Ongyerth +Stability: Alpha +Category: System +Build-type: Simple +Cabal-version: >=1.10 + +Tested-With: GHC == 7.6.3, GHC == 7.8.4, GHC == 7.10.2, GHC == 8.0.1 + +Source-repository head + type: git + location: https://github.com/Ongy/locale-hs + + + +Library + Exposed-modules: System.Locale.Current + default-language: Haskell2010 + Build-depends: base >=4 && <5, old-locale + + Ghc-options: -Wall -fwarn-tabs + c-sources: cbits/glue.c