42 lines
1.0 KiB
Haskell
42 lines
1.0 KiB
Haskell
{-# LANGUAGE NamedFieldPuns #-}
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{- LANGUAGE OverloadedStrings #-}
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module Article (
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Article(..)
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, at
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) where
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import Control.Monad.State (evalState, state)
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import Data.Text (Text, pack)
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import System.FilePath ((</>))
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import System.Posix.Types (FileID)
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import System.Posix.Files (FileStatus, getFileStatus, fileID)
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data Article = Article {
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urlPath :: Text
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, fileStatus :: FileStatus
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, title :: String
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, preview :: String
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}
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parseBegining :: Int -> String -> (String, String)
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parseBegining linesCount = evalState (do
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first <- state $ splitAt 1
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second <- state $ splitAt linesCount
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return (unlines first, unlines second)
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) . lines
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at :: Int -> FilePath -> IO (FileID, Article)
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at linesCount filePath = do
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fileStatus <- getFileStatus filePath
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(title, preview) <- parseBegining linesCount <$> readFile filePath
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return (
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fileID fileStatus
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, Article {
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urlPath = pack $ "/" </> filePath
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, fileStatus
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, title
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, preview
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}
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)
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