+-- #prune
+
+-- |Definition of things related on HTTP response.
module Network.HTTP.Lucu.Response
( StatusCode(..)
, Response(..)
- , hPutResponse -- Handle -> Response -> IO ()
- , isInformational -- StatusCode -> Bool
- , isSuccessful -- StatusCode -> Bool
- , isRedirection -- StatusCode -> Bool
- , isError -- StatusCode -> Bool
- , statusCode -- StatusCode -> (Int, String)
+ , hPutResponse
+ , isInformational
+ , isSuccessful
+ , isRedirection
+ , isError
+ , isClientError
+ , isServerError
+ , statusCode
)
where
import System.IO
import Text.Printf
+-- |This is the definition of HTTP status code.
+-- 'Network.HTTP.Lucu.Resource.setStatus' accepts these named statuses
+-- so you don't have to memorize, for instance, that \"Gateway
+-- Timeout\" is 504.
data StatusCode = Continue
| SwitchingProtocols
| Processing
in
hPrintf h "%03d %s" num msg
-
+-- |@'isInformational' sc@ is True iff @sc < 200@.
isInformational :: StatusCode -> Bool
isInformational = doesMeet (< 200)
+-- |@'isSuccessful' sc@ is True iff @200 <= sc < 300@.
isSuccessful :: StatusCode -> Bool
isSuccessful = doesMeet (\ n -> n >= 200 && n < 300)
+-- |@'isRedirection' sc@ is True iff @300 <= sc < 400@.
isRedirection :: StatusCode -> Bool
isRedirection = doesMeet (\ n -> n >= 300 && n < 400)
+-- |@'isError' sc@ is True iff @400 <= sc@
isError :: StatusCode -> Bool
isError = doesMeet (>= 400)
+-- |@'isClientError' sc@ is True iff @400 <= sc < 500@.
+isClientError :: StatusCode -> Bool
+isClientError = doesMeet (\ n -> n >= 400 && n < 500)
+
+-- |@'isServerError' sc@ is True iff @500 <= sc@.
+isServerError :: StatusCode -> Bool
+isServerError = doesMeet (>= 500)
+
+
doesMeet :: (Int -> Bool) -> StatusCode -> Bool
doesMeet p sc = let (num, _) = statusCode sc
in
p num
+-- |@'statusCode' sc@ returns a tuple of numeric and textual
+-- representation of @sc@.
statusCode :: StatusCode -> (Int, String)
statusCode Continue = (100, "Continue")
statusCode SwitchingProtocols = (101, "Switching Protocols")