87 lines
2.8 KiB
Haskell
87 lines
2.8 KiB
Haskell
module Main where
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import System.IO
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import System.Directory
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import Options.Applicative
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import Data.List
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import Control.Exception
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data CgiState = CgiSuccess
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instance Show CgiState where
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show CgiSuccess = "20 text/gemini; lang=en; charset=utf-8\r"
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data Args = Args
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{ title :: String
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, directory :: FilePath
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, fileHead :: FilePath
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--, verbose :: Bool
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, names :: Bool
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, cgi :: Bool
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, back :: Bool
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}
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args :: Parser Args
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args = Args
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<$> strOption ( long "title" <> short 't' <> value "Title Left Blank" <> help "Document title" )
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<*> strOption ( long "directory" <> short 'd' <> value "./" <> help "Directory to parse" )
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<*> strOption ( long "header" <> short 'H' <> value "" <> help "Header text" )
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-- <*> switch ( long "verbose" <> short 'v' <> help "Verbose mode")
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<*> switch ( long "names" <> short 'n' <> help "Generate link names based on first of each document" )
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<*> switch ( long "cgi" <> help "Output gemini file header")
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<*> switch ( long "back" <> help "Print 'return to dir' url")
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main :: IO ()
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main = parseArgs =<< execParser opts
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where
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opts = info ( args <**> helper)
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( fullDesc
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<> progDesc "Generate gemini page index"
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<> header "Generate a gemini page index")
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parseArgs :: Args -> IO()
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--parseArgs (Args t dir h v n c b) = do
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parseArgs (Args t dir h n c b) = do
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if c
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then do print CgiSuccess
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putStrLn $ "# " ++ t
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else putStrLn $ "# " ++ t
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if not (null h)
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then putStr $ "\n" ++ h ++ "\n\n"
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else putStr "\n"
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if b then do
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mapM_ (mkIndex n dir) . filter (isSuffixOf ".gmi") =<< getDirectoryContents dir
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putStr "\n"
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putStrLn "=> .. "
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else mapM_ (mkIndex n dir) . filter (isSuffixOf ".gmi") =<< getDirectoryContents dir
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mkIndex :: Bool -> FilePath -> FilePath -> IO ()
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mkIndex False d f = putStrLn $ "=> " ++ path d
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where path s
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| s == "./" = f
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| otherwise = s++"/"++f
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mkIndex True d f =
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let path = d ++ "/" ++ f
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trim s
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| length s >= 8 = appendDots . unwords . take 8 . cleanString $ s
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| otherwise = unwords . cleanString $ s
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where
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-- remove all '#' signs and any potential resulting empty lists
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cleanString = filter (/= "") . map (dropWhile (== '#'))
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-- in case the last character is a dot, remove it
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appendDots name
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| last name == '.' = (++ "...") . reverse . dropWhile (=='.') . reverse $ name
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| otherwise = name
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in do
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line <- trim . words . head . lines <$> readFile path
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putStrLn $ "=> " ++ path ++ " " ++ line
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getFirstLine :: FilePath -> IO (Maybe String)
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getFirstLine f = (Just <$> readFile f) `catch` handler
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where
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handler :: IOException -> IO (Maybe String)
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handler _ = return Nothing
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