31 lines
1.0 KiB
Haskell
31 lines
1.0 KiB
Haskell
{-# LANGUAGE PackageImports #-}
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module Main (main) where
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import "foldl" Control.Foldl (Fold(..))
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import qualified "foldl" Control.Foldl as Foldl
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import "base" Control.Monad (forever)
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import "base" Data.Bool (bool)
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import "https-everywhere-rules" Data.HTTPSEverywhere.Rules (rewriteURL)
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import "base" Data.Maybe (isJust)
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import "base" Data.Monoid (Sum(..))
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import "network-uri" Network.URI (URI, parseURI)
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import "pipes" Pipes (Pipe, Producer, lift, yield, await, (>->))
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import "pipes" Pipes.Prelude (stdinLn)
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import qualified "pipes" Pipes.Prelude as Pipes (fold)
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parse :: Monad m => Pipe String URI m ()
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parse = forever $ parseURI <$> await >>= maybe (return ()) yield
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check :: Pipe URI Bool IO ()
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check = forever $ await >>= yield . isJust . rewriteURL
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fold :: Monad m => Fold a b -> Producer a m () -> m b
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fold (Fold step begin done) = Pipes.fold step begin done
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proportion :: Fold Bool (Int, Int)
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proportion = (,) <$> Foldl.foldMap (Sum . bool 0 1) getSum <*> Foldl.length
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main :: IO ()
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main = fold proportion (stdinLn >-> parse >-> check) >>= print
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