31 lines
770 B
Haskell
31 lines
770 B
Haskell
module Data.Encoding.CP1252
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(CP1252(..)) where
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import Data.Array ((!),Array)
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import Data.Word (Word8)
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import Data.ByteString (all)
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import Data.Map (Map,lookup,member)
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import Data.Encoding.Base
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import Prelude hiding (lookup,all)
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import Control.Exception (throwDyn)
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data CP1252 = CP1252
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instance Encoding CP1252 where
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encode _ = encodeSinglebyte (\c -> case lookup c encodeMap of
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Just v -> v
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Nothing -> throwDyn (HasNoRepresentation c))
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encodable _ c = member c encodeMap
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decode _ = decodeSinglebyte (decodeArr!)
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decodable _ = all (\w -> decodeArr!w /= '\xFFFD')
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decodeArr :: Array Word8 Char
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#ifndef __HADDOCK__
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decodeArr = $(decodingArray "CP1252.TXT")
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#endif
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encodeMap :: Map Char Word8
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#ifndef __HADDOCK__
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encodeMap = $(encodingMap "CP1252.TXT")
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#endif
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