diff options
| author | Jasper Van der Jeugt <jaspervdj@gmail.com> | 2010-01-11 13:56:32 +0100 |
|---|---|---|
| committer | Jasper Van der Jeugt <jaspervdj@gmail.com> | 2010-01-11 13:56:32 +0100 |
| commit | dae0258a62a714fb7fd9b47473bf259eb858f9f1 (patch) | |
| tree | de6c4480cbd87ec9e8689dcdbefeee5618c8a3ef /src/Network/Hakyll/SimpleServer.hs | |
| parent | 7a765f29a2f5dcf753e5418c96a9c40ddb9112be (diff) | |
| download | hakyll-dae0258a62a714fb7fd9b47473bf259eb858f9f1.tar.gz | |
Readability++.
Diffstat (limited to 'src/Network/Hakyll/SimpleServer.hs')
| -rw-r--r-- | src/Network/Hakyll/SimpleServer.hs | 114 |
1 files changed, 63 insertions, 51 deletions
diff --git a/src/Network/Hakyll/SimpleServer.hs b/src/Network/Hakyll/SimpleServer.hs index 017a764..cf4dd07 100644 --- a/src/Network/Hakyll/SimpleServer.hs +++ b/src/Network/Hakyll/SimpleServer.hs @@ -78,8 +78,9 @@ defaultResponse = Response { responseVersion = B.pack "HTTP/1.1" -- | Create a response for a given HTTP request. createResponse :: Request -> Server Response -createResponse request | requestMethod request == B.pack "GET" = createGetResponse request - | otherwise = return $ createErrorResponse 501 (B.pack "Not Implemented") +createResponse request + | requestMethod request == B.pack "GET" = createGetResponse request + | otherwise = return $ createErrorResponse 501 (B.pack "Not Implemented") -- | Create a simple error response. createErrorResponse :: Int -- ^ Error code. @@ -89,9 +90,10 @@ createErrorResponse statusCode phrase = defaultResponse { responseStatusCode = statusCode , responsePhrase = phrase , responseHeaders = M.singleton (B.pack "Content-Type") (B.pack "text/html") - , responseBody = B.pack $ "<html> <head> <title>" ++ show statusCode ++ "</title> </head>" - ++ "<body> <h1>" ++ show statusCode ++ "</h1>\n" - ++ "<p>" ++ (B.unpack phrase) ++ "</p> </body> </html>" + , responseBody = B.pack $ + "<html> <head> <title>" ++ show statusCode ++ "</title> </head>" + ++ "<body> <h1>" ++ show statusCode ++ "</h1>\n" + ++ "<p>" ++ (B.unpack phrase) ++ "</p> </body> </html>" } -- | Create a simple get response. @@ -100,48 +102,56 @@ createGetResponse request = do -- Construct the complete fileName of the requested resource. config <- ask let uri = B.unpack (requestURI request) + log' = writeChan (logChannel config) isDirectory <- liftIO $ doesDirectoryExist $ documentRoot config ++ uri - let fileName = (documentRoot config) ++ if isDirectory then uri ++ "/index.html" - else uri + let fileName = + (documentRoot config) ++ if isDirectory then uri ++ "/index.html" + else uri create200 = do body <- B.readFile fileName - let headers = [ (B.pack "Content-Length", B.pack $ show $ B.length body) - ] ++ getMIMEHeader fileName - return $ defaultResponse { responseStatusCode = 200 - , responsePhrase = B.pack "OK" - , responseHeaders = (responseHeaders defaultResponse) - `M.union` M.fromList headers - , responseBody = body - } + let headers = + [ (B.pack "Content-Length", B.pack $ show $ B.length body) + ] ++ getMIMEHeader fileName + return $ defaultResponse + { responseStatusCode = 200 + , responsePhrase = B.pack "OK" + , responseHeaders = (responseHeaders defaultResponse) + `M.union` M.fromList headers + , responseBody = body + } -- Called when an error occurs during the creation of a 200 response. - create500 e = do writeChan (logChannel config) $ "Internal Error: " ++ show e - return $ createErrorResponse 500 (B.pack "Internal Server Error") + create500 e = do + log' $ "Internal Error: " ++ show e + return $ createErrorResponse 500 (B.pack "Internal Server Error") -- Send back the page if found. exists <- liftIO $ doesFileExist fileName - if exists then do response <- liftIO $ catch create200 create500 - return response - else do liftIO $ writeChan (logChannel config) $ "Not Found: " ++ fileName - return $ createErrorResponse 404 (B.pack "Not Found") + if exists + then do response <- liftIO $ catch create200 create500 + return response + else do liftIO $ log' $ "Not Found: " ++ fileName + return $ createErrorResponse 404 (B.pack "Not Found") -- | Get the mime header for a certain filename. This is based on the extension -- of the given 'FilePath'. getMIMEHeader :: FilePath -> [(B.ByteString, B.ByteString)] -getMIMEHeader fileName = case result of (Just x) -> [(B.pack "Content-Type", B.pack x)] - Nothing -> [] - where result = lookup (takeExtension fileName) [ (".css", "text/css") - , (".gif", "image/gif") - , (".htm", "text/html") - , (".html", "text/html") - , (".jpeg", "image/jpeg") - , (".jpg", "image/jpeg") - , (".js", "text/javascript") - , (".png", "image/png") - , (".txt", "text/plain") - , (".xml", "text/xml") - ] +getMIMEHeader fileName = + case result of (Just x) -> [(B.pack "Content-Type", B.pack x)] + Nothing -> [] + where + result = lookup (takeExtension fileName) [ (".css", "text/css") + , (".gif", "image/gif") + , (".htm", "text/html") + , (".html", "text/html") + , (".jpeg", "image/jpeg") + , (".jpg", "image/jpeg") + , (".js", "text/javascript") + , (".png", "image/png") + , (".txt", "text/plain") + , (".xml", "text/xml") + ] -- | Respond to an incoming request. respond :: Handle -> Server () @@ -152,24 +162,28 @@ respond handle = do -- Generate some output. config <- ask - liftIO $ writeChan (logChannel config) $ show request ++ " => " ++ show response + liftIO $ writeChan (logChannel config) + $ show request ++ " => " ++ show response -- Send the response back to the handle. liftIO $ putResponse response - where putResponse response = do B.hPutStr handle $ B.intercalate (B.pack " ") - [ responseVersion response - , B.pack $ show $ responseStatusCode response - , responsePhrase response - ] - hPutStr handle "\r\n" - mapM_ putHeader (M.toList $ responseHeaders response) - hPutStr handle "\r\n" - B.hPutStr handle $ responseBody response - hPutStr handle "\r\n" - hClose handle - - putHeader (key, value) = B.hPutStr handle $ key `B.append` B.pack ": " - `B.append` value `B.append` B.pack "\r\n" + where + putResponse response = do B.hPutStr handle $ B.intercalate (B.pack " ") + [ responseVersion response + , B.pack $ show $ responseStatusCode response + , responsePhrase response + ] + hPutStr handle "\r\n" + mapM_ putHeader + (M.toList $ responseHeaders response) + hPutStr handle "\r\n" + B.hPutStr handle $ responseBody response + hPutStr handle "\r\n" + hClose handle + + putHeader (key, value) = + B.hPutStr handle $ key `B.append` B.pack ": " + `B.append` value `B.append` B.pack "\r\n" -- | Start a simple http server on the given 'PortNumber', serving the given -- directory. @@ -194,5 +208,3 @@ simpleServer port root = do writeChan logChan $ "Starting hakyll server on port " ++ show port ++ "..." socket <- listenOn (PortNumber port) forever (listen socket) - where - |