org-to-mafiauniverse/app/Main.hs
Pingu 2cd0d66bb3 Added example, drops until first empty line, todo list
Drops the usually headers of the document until there is a empty line
2022-10-29 11:44:52 +02:00

107 lines
3.5 KiB
Haskell

module Main where
import Control.Applicative hiding (some)
import Control.Monad
import Data.Functor
import Data.Void
import System.Environment
import System.Exit
import Text.Megaparsec
import Text.Megaparsec.Char
type Parser = Parsec Void String
newtype URL = URL String
data Info =
Bread String |
List [Info] |
Header String |
Subheader String |
Subsubheader String |
Image URL |
Video URL |
Link URL Info |
Spoiler [Info]
instance Show Info where
show :: Info -> String
show info = case info of
Bread text -> text
List texts -> "[LIST]" ++ concatMap ((++) "[*] " . show) texts ++ "[/LIST]"
Header text -> "[TITLE]" ++ text ++ "[/TITLE]"
Subheader text -> "[SIZE=4]" ++ text ++ "[/SIZE]"
Subsubheader text -> "[SIZE=2]" ++ text ++ "[/SIZE]"
Image (URL url) -> "[IMG]" ++ url ++ "[/IMG]"
Video (URL url) -> "[VIDEO]" ++ url ++ "[/VIDEO]"
Link (URL url) inf -> "[URL=\"" ++ url ++ "\"]" ++ show inf ++ "[/IMG]"
Spoiler inf -> "[SPOILER]" ++ concatMap show inf ++ "[/SPOILER]"
newtype Post = Post [Info]
instance Show Post where
show :: Post -> String
show (Post a) = concatMap show a
reduce :: [Info] -> [Info]
reduce [] = []
reduce ((List x) : (List y) : xs) = reduce $ List (x++y) : xs
reduce ((Spoiler x) : (Spoiler y) : xs) = Spoiler (x++y) : reduce xs
reduce ((Spoiler x) : y : xs) = reduce $ Spoiler (reduce $ x ++ [y]) : xs
reduce (x:xs) = x: reduce xs
parseHelper :: Parser a -> String -> a
parseHelper parser x = case parse parser "" x of
Left bundle -> error $ errorBundlePretty bundle
Right text -> text
parseFile :: String -> Post
parseFile = Post . reduce . map (parseHelper fileParser) . dropWhile (/= "") . lines
fileParser :: Parser Info
fileParser =
try $
choice [
Header <$> (string' "* " >> takeRest),
Subheader <$> (string' "** " >> takeRest),
Subsubheader <$> (string' "*** " >> takeRest),
List . (: []) . Bread <$> (string' "- " >> takeRest),
-- Image and video needs to know if it is a image or video
Image . URL <$> between (string' "[[") (string' "]]") (takeWhileP Nothing (/= ']')),
Video . URL <$> between (string' "[[") (string' "]]") (takeWhileP Nothing (/= ']')),
-- parseLink,
Spoiler . (: []) . Bread <$> (string' "#+BEGIN" >> return ""),
Spoiler . (: []) . Bread <$> (string' "#+END" >> return ""),
Bread <$> takeRest
]
parseLink :: Parser Info
parseLink = undefined
parseCli :: [String] -> IO Post
parseCli [] = return $ Post [usage]
parseCli [x] =
if head x /= '-'
then parseFile <$> readFile x
else return $ useArgs $ parseHelper argParse x
parseCli [x, _] = return $ useArgs $ parseHelper argParse x
parseCli _ = fail "Too many arugemnts"
argParse :: Parser String
argParse = string "-" >> some alphaNumChar
useArgs :: String -> Post
useArgs [] = Post [Bread ""]
useArgs ('h' : _) = Post [usage]
useArgs ('v' : _) = Post [version]
useArgs (_ : xs) = useArgs xs
usage :: Info
usage = Bread "Usage: otm [-hv] [file]"
version :: Info
version = Bread "otm 0.1"
main :: IO ()
main = putStr . show =<< parseCli =<< getArgs