pandoc-plot-1.8.0: executable/ExampleConfig.hs

{-# LANGUAGE TemplateHaskellQuotes #-}

module ExampleConfig (embedExampleConfig) where

import Data.Functor ((<&>))
import Data.String (IsString (fromString))
import Data.Text (unpack)
import qualified Data.Text.IO as TIO
import Language.Haskell.TH.Syntax
  ( Exp (AppE, LitE, VarE),
    Lit (StringL),
    Q,
    Quasi (qAddDependentFile),
    runIO,
  )

docFile :: FilePath
docFile = "example-config.yml"

readDocFile :: IO String
readDocFile = TIO.readFile docFile <&> unpack

embedExampleConfig :: Q Exp
embedExampleConfig = do
  qAddDependentFile docFile
  s <- runIO readDocFile
  strToExp s
  where
    strToExp :: String -> Q Exp
    strToExp s = return $ VarE 'fromString `AppE` LitE (StringL s)