cb81698b7e
This way, we can declare DynEncoding an instance of Show darcs-hash:20070827020833-a4fee-a84635bf911573022b780c17b2085ff814302b3e
37 lines
931 B
Haskell
37 lines
931 B
Haskell
{- | Implements ISO\/IEC 8859-2 alias latin-2 encoding. See
|
|
<http://en.wikipedia.org/wiki/ISO/IEC_8859-2> for further informations.
|
|
-}
|
|
module Data.Encoding.ISO88592
|
|
(ISO88592(..)) where
|
|
|
|
import Data.Array
|
|
import Data.Map hiding ((!))
|
|
import Data.Word
|
|
import Data.Encoding.Base
|
|
import Data.ByteString hiding (length,map)
|
|
import Prelude hiding (lookup,all)
|
|
import Control.Exception
|
|
|
|
data ISO88592 = ISO88592 deriving Show
|
|
|
|
enc :: Char -> Word8
|
|
enc c = case lookup c encodeMap of
|
|
Just v -> v
|
|
Nothing -> throwDyn (HasNoRepresentation c)
|
|
|
|
instance Encoding ISO88592 where
|
|
encode _ = encodeSinglebyte enc
|
|
encodeLazy _ = encodeSinglebyteLazy enc
|
|
encodable _ c = member c encodeMap
|
|
decode _ = decodeSinglebyte (\w -> decodeArr!w)
|
|
|
|
decodeArr :: Array Word8 Char
|
|
#ifndef __HADDOCK__
|
|
decodeArr = $(decodingArray "8859-2.TXT")
|
|
#endif
|
|
|
|
encodeMap :: Map Char Word8
|
|
#ifndef __HADDOCK__
|
|
encodeMap = $(encodingMap "8859-2.TXT")
|
|
#endif
|