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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, 6.12, or 7.
-}
module Text.Pandoc.UTF8 ( readFile
, writeFile
, getContents
, putStr
, putStrLn
, hPutStr
, hPutStrLn
, hGetContents
, encodePath
, decodeArg
)
where
#if MIN_VERSION_base(4,4,0)
#else
import Codec.Binary.UTF8.String (encodeString, decodeString)
#endif
#if MIN_VERSION_base(4,2,0)
import System.IO hiding (readFile, writeFile, getContents,
putStr, putStrLn, hPutStr, hPutStrLn, hGetContents)
import Prelude hiding (readFile, writeFile, getContents, putStr, putStrLn )
import qualified System.IO as IO
readFile :: FilePath -> IO String
readFile f = do
h <- openFile (encodePath f) ReadMode
hGetContents h
writeFile :: FilePath -> String -> IO ()
writeFile f s = withFile (encodePath f) WriteMode $ \h -> hPutStr h s
getContents :: IO String
getContents = hGetContents stdin
putStr :: String -> IO ()
putStr s = hPutStr stdout s
putStrLn :: String -> IO ()
putStrLn s = hPutStrLn stdout s
hPutStr :: Handle -> String -> IO ()
hPutStr h s = hSetEncoding h utf8 >> IO.hPutStr h s
hPutStrLn :: Handle -> String -> IO ()
hPutStrLn h s = hSetEncoding h utf8 >> IO.hPutStrLn h s
hGetContents :: Handle -> IO String
hGetContents h = hSetEncoding h utf8_bom >> IO.hGetContents h
#else
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 . encodePath
writeFile :: FilePath -> String -> IO ()
writeFile f = B.writeFile (encodePath f) . fromString
getContents :: IO String
getContents = liftM (toString . stripBOM) B.getContents
hGetContents :: Handle -> IO String
hGetContents h = liftM (toString . stripBOM) (B.hGetContents h)
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")
#endif
encodePath :: FilePath -> FilePath
decodeArg :: String -> String
#if MIN_VERSION_base(4,4,0)
encodePath = id
decodeArg = id
#else
encodePath = encodeString
decodeArg = decodeString
#endif
|
