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asterius/utils/format.hs

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Haskell
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{-# LANGUAGE LambdaCase #-}
{-# OPTIONS_GHC -Wall #-}
import Control.Concurrent
import Control.Concurrent.Async
import Data.Function
import Data.List
import System.Directory.Extra
import System.Environment
import System.FilePath
import Text.Show.Pretty
main :: IO ()
main = do
bp <- getEnv "FORMAT_PATH"
fs' <- listFilesRecursive bp
q <- newMVar $ filter ("-ast" `isSuffixOf`) fs'
n <- read <$> getEnv "FORMAT_N"
replicateConcurrently_ n $
fix $ \w -> do
mf <-
modifyMVar q $ \case
f:r -> pure (r, Just f)
[] -> pure ([], Nothing)
case mf of
Just f -> do
s' <- readFile f
writeFile (f <.> "pretty") $
case parseValue s' of
Just v -> valToStr v
_ -> s'
removeFile f
w
_ -> pure ()