cc39c313c5
Prior to base 4.5 (and perhaps earlier - check), filepaths and command line arguments were treated as unencoded lists of bytes, not unicode strings, so we had to work around that by encoding and decoding them. This commit adds CPP checks for base 4.5 that disable the encoding/decoding. Fixes a bug with multilingual filenames when pandoc was compiled with ghc 7.4. Closes #540.
127 lines
3.5 KiB
Haskell
127 lines
3.5 KiB
Haskell
{-
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Copyright (C) 2010 John MacFarlane <jgm@berkeley.edu>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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-}
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{- |
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Module : Text.Pandoc.UTF8
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Copyright : Copyright (C) 2010 John MacFarlane
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License : GNU GPL, version 2 or above
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Maintainer : John MacFarlane <jgm@berkeley.edu>
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Stability : alpha
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Portability : portable
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UTF-8 aware string IO functions that will work with GHC 6.10, 6.12, or 7.
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-}
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module Text.Pandoc.UTF8 ( readFile
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, writeFile
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, getContents
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, putStr
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, putStrLn
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, hPutStr
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, hPutStrLn
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, hGetContents
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)
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where
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#if MIN_VERSION_base(4,5,0)
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#else
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import Codec.Binary.UTF8.String (encodeString)
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#endif
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#if MIN_VERSION_base(4,2,0)
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import System.IO hiding (readFile, writeFile, getContents,
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putStr, putStrLn, hPutStr, hPutStrLn, hGetContents)
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import Prelude hiding (readFile, writeFile, getContents, putStr, putStrLn )
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import qualified System.IO as IO
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readFile :: FilePath -> IO String
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readFile f = do
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h <- openFile (encodePath f) ReadMode
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hGetContents h
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writeFile :: FilePath -> String -> IO ()
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writeFile f s = withFile (encodePath f) WriteMode $ \h -> hPutStr h s
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getContents :: IO String
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getContents = hGetContents stdin
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putStr :: String -> IO ()
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putStr s = hPutStr stdout s
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putStrLn :: String -> IO ()
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putStrLn s = hPutStrLn stdout s
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hPutStr :: Handle -> String -> IO ()
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hPutStr h s = hSetEncoding h utf8 >> IO.hPutStr h s
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hPutStrLn :: Handle -> String -> IO ()
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hPutStrLn h s = hSetEncoding h utf8 >> IO.hPutStrLn h s
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hGetContents :: Handle -> IO String
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hGetContents h = hSetEncoding h utf8_bom >> IO.hGetContents h
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#else
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import qualified Data.ByteString as B
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import Data.ByteString.UTF8 (toString, fromString)
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import Prelude hiding (readFile, writeFile, getContents, putStr, putStrLn)
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import System.IO (Handle)
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import Control.Monad (liftM)
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bom :: B.ByteString
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bom = B.pack [0xEF, 0xBB, 0xBF]
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stripBOM :: B.ByteString -> B.ByteString
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stripBOM s | bom `B.isPrefixOf` s = B.drop 3 s
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stripBOM s = s
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readFile :: FilePath -> IO String
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readFile = liftM (toString . stripBOM) . B.readFile . encodePath
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writeFile :: FilePath -> String -> IO ()
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writeFile f = B.writeFile (encodePath f) . fromString
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getContents :: IO String
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getContents = liftM (toString . stripBOM) B.getContents
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hGetContents :: Handle -> IO String
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hGetContents h = liftM (toString . stripBOM) (B.hGetContents h)
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putStr :: String -> IO ()
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putStr = B.putStr . fromString
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putStrLn :: String -> IO ()
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putStrLn = B.putStrLn . fromString
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hPutStr :: Handle -> String -> IO ()
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hPutStr h = B.hPutStr h . fromString
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hPutStrLn :: Handle -> String -> IO ()
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hPutStrLn h s = hPutStr h (s ++ "\n")
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#endif
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encodePath :: FilePath -> FilePath
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#if MIN_VERSION_base(4,5,0)
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encodePath = id
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#else
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encodePath = encodeString
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#endif
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