56 lines
1.9 KiB
Haskell
56 lines
1.9 KiB
Haskell
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-- | Describes writable items; items that can be saved to the disk
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{-# LANGUAGE FlexibleInstances #-}
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{-# LANGUAGE TypeSynonymInstances #-}
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module Hakyll.Core.Writable
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( Writable (..)
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) where
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import qualified Data.ByteString as SB
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import qualified Data.ByteString.Lazy as LB
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import Data.Word (Word8)
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import Text.Blaze.Html (Html)
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import Text.Blaze.Html.Renderer.String (renderHtml)
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import Hakyll.Core.Item
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-- | Describes an item that can be saved to the disk
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class Writable a where
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-- | Save an item to the given filepath
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write :: FilePath -> Item a -> IO ()
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instance Writable () where
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write _ _ = return ()
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--------------------------------------------------------------------------------
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instance Writable [Char] where
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write p = writeFile p . itemBody
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--------------------------------------------------------------------------------
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instance Writable SB.ByteString where
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write p = SB.writeFile p . itemBody
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--------------------------------------------------------------------------------
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instance Writable LB.ByteString where
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write p = LB.writeFile p . itemBody
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instance Writable [Word8] where
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write p = write p . fmap SB.pack
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--------------------------------------------------------------------------------
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instance Writable Html where
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write p = write p . fmap renderHtml
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