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{-# LANGUAGE OverloadedStrings #-}
{- |
Module : PandocCLI.Lua
Copyright : © 2022 Albert Krewinkel
License : GPL-2.0-or-later
Maintainer : Albert Krewinkel <[email protected]>
Functions to run the pandoc Lua scripting engine.
-}
module PandocCLI.Lua (runLuaInterpreter, getEngine) where
import Control.Monad ((<=<))
import HsLua.CLI (EnvBehavior (..), Settings (..), runStandalone)
import Text.Pandoc.Class (runIOorExplode)
import Text.Pandoc.Error (handleError)
import Text.Pandoc.Lua (runLua, runLuaNoEnv, getEngine)
import Text.Pandoc.Version (pandocVersionText)
-- | Runs pandoc as a Lua interpreter that is (mostly) compatible with
-- the default @lua@ program shipping with Lua.
runLuaInterpreter :: String -- ^ Program name
-> [String] -- ^ Command line arguments
-> IO ()
runLuaInterpreter progName args = do
let settings = Settings
{ settingsVersionInfo = "\nEmbedded in pandoc " <> pandocVersionText
, settingsRunner = runner
}
runStandalone settings progName args
where
runner envBehavior =
let runLua' = case envBehavior of
IgnoreEnvVars -> runLuaNoEnv
ConsultEnvVars -> runLua
in handleError <=< runIOorExplode . runLua'
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