module Ketchup.Utils
( trim
, sendReply
, sendBadRequest
, sendNotFound
, statusMsg
) where
import qualified Data.ByteString as B
import qualified Data.ByteString.Char8 as C
import Data.Char (isSpace)
import qualified Data.List as List
import Network
import Network.Socket.ByteString
statusMsg :: Int -> B.ByteString
statusMsg stat
| stat == 200 = "200 OK"
| stat == 201 = "201 Created"
| stat == 204 = "204 No Content"
| stat == 400 = "400 Bad Request"
| stat == 403 = "403 Forbidden"
| stat == 404 = "404 Not Found"
| stat == 405 = "405 Method Not Allowed"
| stat == 410 = "410 Gone"
| stat == 500 = "500 Internal Server Error"
| stat == 501 = "501 Not Implemented"
| stat == 502 = "502 Bad Gateway"
| stat == 503 = "503 Service Unavailable"
| otherwise = "500 Internal Server Error"
sendBadRequest :: Socket -> IO ()
sendBadRequest client = do
sendReply client 400 [("Content-Type",["text/plain"])] "400 Bad Request!\n"
sendNotFound :: Socket -> IO ()
sendNotFound client = do
sendReply client 404 [("Content-Type",["text/plain"])] "404 Not Found!\n"
sendReply :: Socket -> Int -> [(B.ByteString, [B.ByteString])] -> B.ByteString -> IO ()
sendReply client status headers body = do
sendAll client reply
where
reply = B.concat ["HTTP/1.1 ", statusMsg status,"\r\n\
\Content-Length: ", C.pack $ show $ C.length body, "\r\n\
\Connection: close\r\n",heads,"\r\n",body]
heads = B.concat $ map (\x -> B.concat [fst x, ": ", B.concat $ List.intersperse "," $ snd x, "\r\n"]) headers
trim :: B.ByteString -> B.ByteString
trim = f . f
where f = C.reverse . C.dropWhile isSpace