{-# LANGUAGE NoImplicitPrelude #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE QuasiQuotes #-}
{-# LANGUAGE RecordWildCards #-}
module Text.Pandoc.Filter.Plot.Renderers.Graphviz (
graphvizSupportedSaveFormats
, graphvizCommand
, graphvizCapture
, graphvizAvailable
) where
import Data.Char
import Text.Pandoc.Filter.Plot.Renderers.Prelude
graphvizSupportedSaveFormats :: [SaveFormat]
graphvizSupportedSaveFormats = [PNG, PDF, SVG, JPG, EPS, WEBP, GIF]
graphvizCommand :: OutputSpec -> Text -> Text
graphvizCommand OutputSpec{..} exe =
let fmt = fmap toLower . show . saveFormat $ oFigureSpec
dpi' = dpi oFigureSpec
in [st|#{exe} -T#{fmt} -Gdpi=#{dpi'} -o "#{oFigurePath}" "#{oScriptPath}"|]
graphvizAvailable :: PlotM Bool
graphvizAvailable = do
mexe <- executable Graphviz
case mexe of
Nothing -> return False
Just (Executable dir exe) ->
commandSuccess dir [st|#{exe} -?|]
graphvizCapture :: FigureSpec -> FilePath -> Script
graphvizCapture FigureSpec{..} _ = script