1 files changed, 36 insertions, 0 deletions
diff --git a/src/Hakyll/TeX/BibTeX.hs b/src/Hakyll/TeX/BibTeX.hs
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+++ b/src/Hakyll/TeX/BibTeX.hs
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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