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{-
Copyright (C) 2010 John MacFarlane <jgm@berkeley.edu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-}
{- |
Module : Text.Pandoc.UTF8
Copyright : Copyright (C) 2010 John MacFarlane
License : GNU GPL, version 2 or above
Maintainer : John MacFarlane <jgm@berkeley.edu>
Stability : alpha
Portability : portable
UTF-8 aware string IO functions that will work with GHC 6.10 or 6.12.
-}
module Text.Pandoc.UTF8 ( readFile
, writeFile
, getContents
, putStr
, putStrLn
, hPutStr
, hPutStrLn
)
where
import qualified Data.ByteString as B
import Data.ByteString.UTF8 (toString, fromString)
import Prelude hiding (readFile, writeFile, getContents, putStr, putStrLn)
import System.IO (Handle)
import Control.Monad (liftM)
bom :: B.ByteString
bom = B.pack [0xEF, 0xBB, 0xBF]
stripBOM :: B.ByteString -> B.ByteString
stripBOM s | bom `B.isPrefixOf` s = B.drop 3 s
stripBOM s = s
readFile :: FilePath -> IO String
readFile = liftM (toString . stripBOM) . B.readFile
writeFile :: FilePath -> String -> IO ()
writeFile f = B.writeFile f . fromString
getContents :: IO String
getContents = liftM (toString . stripBOM) B.getContents
putStr :: String -> IO ()
putStr = B.putStr . fromString
putStrLn :: String -> IO ()
putStrLn = B.putStrLn . fromString
hPutStr :: Handle -> String -> IO ()
hPutStr h = B.hPutStr h . fromString
hPutStrLn :: Handle -> String -> IO ()
hPutStrLn h s = hPutStr h (s ++ "\n")
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