{-# LINE 1 "Data/Text/ICU/Locale.hsc" #-}
{-# LANGUAGE RankNTypes, BangPatterns, ForeignFunctionInterface, RecordWildCards #-}
-- |
-- Module      : Data.Text.ICU.Locale
-- Copyright   : (c) 2021 Torsten Kemps-Benedix
--
-- License     : BSD-style
-- Maintainer  : bos@serpentine.com
-- Stability   : experimental
-- Portability : GHC
--
-- Locale functions implemented as bindings to
-- the International Components for Unicode (ICU) libraries.

module Data.Text.ICU.Locale
    (availableLocales
    ) where



import Control.Monad (forM)
import Data.Int (Int32)
import Foreign.C.String (CString, peekCString)
import Prelude hiding (last)

-- |  Get the available default locales, i.e. locales that return data when passed to ICU 
-- APIs, but not including legacy or alias locales. 
availableLocales :: IO [String]
availableLocales :: IO [String]
availableLocales = do
  Int32
n <- IO Int32
uloc_countAvailable
  [Int32] -> (Int32 -> IO String) -> IO [String]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
t a -> (a -> m b) -> m (t b)
forM [Int32
0..Int32
nInt32 -> Int32 -> Int32
forall a. Num a => a -> a -> a
-Int32
1] ((Int32 -> IO String) -> IO [String])
-> (Int32 -> IO String) -> IO [String]
forall a b. (a -> b) -> a -> b
$ \Int32
i -> Int32 -> IO CString
uloc_getAvailable Int32
i IO CString -> (CString -> IO String) -> IO String
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= CString -> IO String
peekCString

foreign import ccall unsafe "hs_text_icu.h __hs_uloc_getAvailable" uloc_getAvailable
    :: Int32 -> IO CString
foreign import ccall unsafe "hs_text_icu.h __hs_uloc_countAvailable" uloc_countAvailable
    :: IO Int32