63 lines
1.8 KiB
Haskell
63 lines
1.8 KiB
Haskell
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module Main where
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import Control.Monad (msum,guard)
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import Control.Monad.Trans (MonadIO(liftIO))
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import Data.List (isPrefixOf, isSuffixOf)
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import Happstack.Server
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import Happstack.Server.Compression
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import System.Environment
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import qualified Language.Elm as Elm
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serve :: String -> IO ()
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serve libLoc = do
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putStrLn "Elm Server 0.1.2: running at <http://localhost:8000>"
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simpleHTTP nullConf $ do
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_ <- compressedResponseFilter
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msum [ uriRest (serveElm libLoc)
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, serveDirectory EnableBrowsing [] "."
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]
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pageTitle :: String -> String
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pageTitle fp =
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reverse . takeWhile (/='/') . drop 1 . dropWhile (/='.') $ reverse fp
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serveElm libLoc fp = do
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let ('/':filePath) = fp
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guard (".elm" `isSuffixOf` filePath)
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content <- liftIO (readFile filePath)
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ok . toResponse $ Elm.toHtml libLoc (pageTitle filePath) content
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main :: IO ()
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main = getArgs >>= parse
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parse :: [String] -> IO ()
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parse ("--help":_) = putStrLn usage
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parse ("--version":_) = putStrLn "The Elm Server 0.1.2"
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parse [] = serve "/elm-mini.js"
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parse [arg]
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| "--runtime-location=" `isPrefixOf` arg =
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serve . tail $ dropWhile (/='=') arg
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| otherwise = putStrLn usageMini
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parse _ = putStrLn usageMini
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usageMini :: String
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usageMini =
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"Usage: elm-server [OPTIONS]\n\
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\Try `elm-server --help' for more information."
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usage :: String
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usage =
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"Usage: elm-server [OPTIONS]\n\
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\Compiles and serves .elm files from the current directory.\n\
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\Example: elm-server\n\
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\\n\
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\Resource Locations:\n\
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\ --runtime-location set the location of the Elm runtime (elm-mini.js)\n\
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\\n\
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\Compiler Information:\n\
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\ --version print the version information and exit\n\
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\ --help display this help and exit\n\
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\\n\
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\Elm home page: <http://elm-lang.org>"
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