mirror of
https://github.com/simonmichael/hledger.git
synced 2024-11-14 13:03:56 +03:00
42 lines
1.1 KiB
Haskell
Executable File
42 lines
1.1 KiB
Haskell
Executable File
#!/usr/bin/env stack
|
|
{- stack runghc --verbosity info
|
|
--package pandoc
|
|
--package split
|
|
-}
|
|
-- Remove a table of contents marker
|
|
-- (a bullet list item containing "toc[-N[-M]]")
|
|
|
|
{-# LANGUAGE OverloadedStrings #-}
|
|
|
|
import Data.Char (isDigit)
|
|
import Data.List.Split
|
|
import Data.Maybe
|
|
import Safe
|
|
import Text.Pandoc.JSON
|
|
|
|
main :: IO ()
|
|
main = toJSONFilter dropToc
|
|
|
|
dropHtmlBlocks :: Block -> Block
|
|
dropHtmlBlocks (RawBlock (Format "html") _) = Plain []
|
|
dropHtmlBlocks x = x
|
|
|
|
-- BulletList
|
|
-- [ [Plain [Str "toc"]] ]
|
|
dropToc :: Block -> Block
|
|
dropToc (BulletList is) =
|
|
BulletList $ filter (not.null) $ map (filter isNotToc) is
|
|
where
|
|
isNotToc (Plain [Str s]) | isJust $ tocParams s = False
|
|
isNotToc _ = True
|
|
dropToc x = x
|
|
|
|
tocParams :: String -> Maybe (Maybe Int, Maybe Int)
|
|
tocParams s =
|
|
case splitOn "-" s of
|
|
["toc"] -> Just (Nothing, Nothing)
|
|
["toc",a] | all isDigit a -> Just (Nothing, readMay a)
|
|
["toc",a,b] | all isDigit a, all isDigit b -> Just (readMay a, readMay b)
|
|
_ -> Nothing
|
|
|