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{-# OPTIONS_GHC -fno-warn-orphans #-}
module Hakyll.TeX.BibTeX
( bibtexCompiler
, compileBibtex
, BibTeX
) where
import Prolog
import Data.List qualified as L
import Hakyll
import Text.BibTeX.Entry qualified as B
import Text.BibTeX.Format qualified as B
import Text.BibTeX.Parse qualified as B
import Text.Parsec qualified as P
import Text.Parsec.Error qualified as P
type BibTeX = B.T
deriving instance Generic B.T
instance Binary B.T
instance Writable B.T where
write p = write p . B.entry
instance Writable [B.T] where
write p = write p . fold . L.intersperse "\n" . fmap B.entry
compileBibtex :: (StringConv s String) => Item s -> Compiler (Item [B.T])
compileBibtex (Item i b) = either (throwError . fmap P.messageString . P.errorMessages) (pure . Item i) $ P.parse p (show i) (toSL b)
where
p = B.skippingLeadingSpace $ B.file <* P.eof
bibtexCompiler :: Compiler (Item [B.T])
bibtexCompiler = getResourceBody >>= compileBibtex
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