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reveal
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Remove useless code equivalent to the identity in the right monad (IO)

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Tissevert 2020-04-17 12:26:07 +02:00
parent 266032950e
commit a64224d119
1 changed files with 8 additions and 15 deletions
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23
src/Main.hs
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@ -1,14 +1,11 @@
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-} {-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeApplications #-}
module Main where module Main where
import Control.Monad.State (execState, execStateT)
import Data.ByteString.Char8 (ByteString) import Data.ByteString.Char8 (ByteString)
import qualified Data.ByteString.Char8 as BS (readFile, split, intercalate) import qualified Data.ByteString.Char8 as BS (readFile, split, intercalate)
import qualified Data.ByteString.Lazy.Char8 as Lazy (writeFile) import qualified Data.ByteString.Lazy.Char8 as Lazy (writeFile)
import PDF (Layers(..), Document(..), UnifiedLayers(..), parseDocument, render) import PDF (Layers(..), Document(..), UnifiedLayers(..), parseDocument, render)
import PDF.Box (Index(..), Maybe_(..), at, atAll, edit) import PDF.Box (Index(..), Maybe_(..), at, atAll)
import PDF.Layer (Layer, Objects(..)) import PDF.Layer (Layer, Objects(..))
import PDF.Object.Navigation (StreamContent(..)) import PDF.Object.Navigation (StreamContent(..))
import PDF.TextRendering (TextRendering(..), update) import PDF.TextRendering (TextRendering(..), update)
@ -29,18 +26,14 @@ revealLayer =
.atAll (Maybe_ StreamContent) $ .atAll (Maybe_ StreamContent) $
return . revealText return . revealText
reveal :: Document -> Document reveal :: Document -> IO Document
reveal = execState $ reveal = at UnifiedLayers $ revealLayer
edit .at UnifiedLayers $ revealLayer
revealFirst :: Document -> Document revealFirst :: Document -> IO Document
revealFirst document = maybe document id $ execStateT ( revealFirst = at Layers .at(Index 0) $ revealLayer
edit .at Layers .at(Index 0) $ revealLayer
) document
deepReveal :: Document -> Document deepReveal :: Document -> IO Document
deepReveal = execState $ deepReveal = atAll Layers $ revealLayer
edit .atAll Layers $ revealLayer
main :: IO () main :: IO ()
main = do main = do
@ -48,4 +41,4 @@ main = do
result <- parseDocument <$> BS.readFile inputPath result <- parseDocument <$> BS.readFile inputPath
case result of case result of
Left parseError -> hPutStrLn stderr $ show parseError Left parseError -> hPutStrLn stderr $ show parseError
Right doc -> Lazy.writeFile outputPath . render $ reveal doc Right doc -> Lazy.writeFile outputPath . render =<< reveal doc