cb81698b7e
This way, we can declare DynEncoding an instance of Show darcs-hash:20070827020833-a4fee-a84635bf911573022b780c17b2085ff814302b3e
26 lines
634 B
Haskell
26 lines
634 B
Haskell
{- | Implements ISO\/IEC 8859-1 alias latin-1 encoding. See
|
|
<http://en.wikipedia.org/wiki/ISO/IEC_8859-1> for further informations.
|
|
-}
|
|
module Data.Encoding.ISO88591
|
|
(ISO88591(..)
|
|
) where
|
|
|
|
import Data.Encoding.Base
|
|
import Data.ByteString.Base(c2w,w2c)
|
|
import Data.Char(ord,chr)
|
|
import Data.Word
|
|
import Control.Exception
|
|
|
|
data ISO88591 = ISO88591 deriving Show
|
|
|
|
enc :: Char -> Word8
|
|
enc c = if ord c < 256
|
|
then c2w c
|
|
else throwDyn (HasNoRepresentation c)
|
|
|
|
instance Encoding ISO88591 where
|
|
encode _ = encodeSinglebyte enc
|
|
encodeLazy _ = encodeSinglebyteLazy enc
|
|
encodable _ c = ord c < 256
|
|
decode _ = decodeSinglebyte w2c
|