X-Git-Url: http://git.cielonegro.org/gitweb.cgi?a=blobdiff_plain;f=Network%2FHTTP%2FLucu%2FResponse.hs;h=9ca08be016a2c9509d5467c6e8f0111df6106358;hb=30fcb38426696db8b80d322196cc594431e30407;hp=e61a6a50242779b91c665218ea565cbb85d69955;hpb=9961a721f98b101825ef154a2122c1fc2fa6d1ac;p=Lucu.git

diff --git a/Network/HTTP/Lucu/Response.hs b/Network/HTTP/Lucu/Response.hs
index e61a6a5..9ca08be 100644
--- a/Network/HTTP/Lucu/Response.hs
+++ b/Network/HTTP/Lucu/Response.hs
@@ -1,14 +1,30 @@
+-- #prune
+
+-- |Definition of things related on HTTP response.
 module Network.HTTP.Lucu.Response
     ( StatusCode(..)
     , Response(..)
+    , hPutResponse
+    , isInformational
+    , isSuccessful
+    , isRedirection
+    , isError
+    , isClientError
+    , isServerError
+    , statusCode
     )
     where
 
-import qualified Data.ByteString.Lazy.Char8 as B
-import           Data.ByteString.Lazy.Char8 (ByteString)
+import           Data.Dynamic
 import           Network.HTTP.Lucu.Headers
 import           Network.HTTP.Lucu.HttpVersion
+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
@@ -59,14 +75,119 @@ data StatusCode = Continue
                 | GatewayTimeout
                 | HttpVersionNotSupported
                 | InsufficientStorage
+                  deriving (Typeable, Eq)
+
+instance Show StatusCode where
+    show sc = let (num, msg) = statusCode sc
+              in
+                printf "%03d %s" num msg
+
 
 data Response = Response {
       resVersion :: HttpVersion
     , resStatus  :: StatusCode
     , resHeaders :: Headers
-    , resBody    :: Maybe ByteString
-    }
+    } deriving (Show, Eq)
+
 
 instance HasHeaders Response where
     getHeaders = resHeaders
     setHeaders res hdr = res { resHeaders = hdr }
+
+
+hPutResponse :: Handle -> Response -> IO ()
+hPutResponse h res = do hPutHttpVersion h (resVersion res)
+                        hPutChar        h ' '
+                        hPutStatus      h (resStatus  res)
+                        hPutStr         h "\r\n"
+                        hPutHeaders     h (resHeaders res)
+
+hPutStatus :: Handle -> StatusCode -> IO ()
+hPutStatus h sc = let (num, msg) = statusCode sc
+                  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")
+statusCode Processing                  = (102, "Processing")
+--
+statusCode Ok                          = (200, "OK")
+statusCode Created                     = (201, "Created")
+statusCode Accepted                    = (202, "Accepted")
+statusCode NonAuthoritativeInformation = (203, "Non Authoritative Information")
+statusCode NoContent                   = (204, "No Content")
+statusCode ResetContent                = (205, "Reset Content")
+statusCode PartialContent              = (206, "Partial Content")
+statusCode MultiStatus                 = (207, "Multi Status")
+--
+statusCode MultipleChoices             = (300, "Multiple Choices")
+statusCode MovedPermanently            = (301, "Moved Permanently")
+statusCode Found                       = (302, "Found")
+statusCode SeeOther                    = (303, "See Other")
+statusCode NotModified                 = (304, "Not Modified")
+statusCode UseProxy                    = (305, "Use Proxy")
+statusCode TemporaryRedirect           = (306, "Temporary Redirect")
+--
+statusCode BadRequest                  = (400, "Bad Request")
+statusCode Unauthorized                = (401, "Unauthorized")
+statusCode PaymentRequired             = (402, "Payment Required")
+statusCode Forbidden                   = (403, "Forbidden")
+statusCode NotFound                    = (404, "Not Found")
+statusCode MethodNotAllowed            = (405, "Method Not Allowed")
+statusCode NotAcceptable               = (406, "Not Acceptable")
+statusCode ProxyAuthenticationRequired = (407, "Proxy Authentication Required")
+statusCode RequestTimeout              = (408, "Request Timeout")
+statusCode Conflict                    = (409, "Conflict")
+statusCode Gone                        = (410, "Gone")
+statusCode LengthRequired              = (411, "Length Required")
+statusCode PreconditionFailed          = (412, "Precondition Failed")
+statusCode RequestEntityTooLarge       = (413, "Request Entity Too Large")
+statusCode RequestURITooLarge          = (414, "Request URI Too Large")
+statusCode UnsupportedMediaType        = (415, "Unsupported Media Type")
+statusCode RequestRangeNotSatisfiable  = (416, "Request Range Not Satisfiable")
+statusCode ExpectationFailed           = (417, "Expectation Failed")
+statusCode UnprocessableEntitiy        = (422, "Unprocessable Entity")
+statusCode Locked                      = (423, "Locked")
+statusCode FailedDependency            = (424, "Failed Dependency")
+--
+statusCode InternalServerError         = (500, "Internal Server Error")
+statusCode NotImplemented              = (501, "Not Implemented")
+statusCode BadGateway                  = (502, "Bad Gateway")
+statusCode ServiceUnavailable          = (503, "Service Unavailable")
+statusCode GatewayTimeout              = (504, "Gateway Timeout")
+statusCode HttpVersionNotSupported     = (505, "HTTP Version Not Supported")
+statusCode InsufficientStorage         = (507, "Insufficient Storage")
\ No newline at end of file