+outputAll :: Handle -> FileOffset -> CGI CGIResult
+outputAll h size = do
+ setHeader "Content-Length" $ show size
+ outputFPS =<< liftIO (B.hGetContents h)
+
+outputRange :: Handle -> FileOffset -> Maybe (FileOffset, FileOffset) -> CGI CGIResult
+outputRange h size Nothing = outputAll h size
+outputRange h size (Just (a, b)) = do
+ let len = b - a + 1
+
+ setStatus 206 "Partial Content"
+ setHeader "Content-Range" $
+ "bytes " ++ show a ++ "-" ++ show b ++ "/" ++ show size
+ setHeader "Content-Length" $ show len
+ liftIO $ hSeek h AbsoluteSeek (fromIntegral a)
+ outputFPS =<< liftIO (B.hGet h (fromIntegral len))
+