types for enc/dec b91

Main.hs

@@ -79,18 +79,18 @@ data Based = Decode {
 --      Just bs -> Right bs
      -- Nothing -> Left "Failed to convert string to ByteString."
 
--- decodeFromBase91 :: C.ByteString -> Either String BS.ByteString
--- decodeToBase91 decoded =
+-- decodeFromBase91 :: String -> Either String C.ByteString
+-- decodeFromBase91 decoded =
 --    case B91.decode of
---       Just bs -> Right decoded
---       Nothing -> Left "Failed to decode from Base91."
+--       decoded | C.null decoded -> Left "Failed to decode from base91"
+--               | otherwise -> Right decoded
 
 
--- encodeToBase64 :: C.ByteString -> Either String BS.ByteString
--- encodeToBase64 bs =
---    case B64.encode bs of
---      encoded | BS.null encoded -> Left "Failed to encode base64."
---              | otherwise -> Right encoded
+encodeToBase64 :: C.ByteString -> Either String C.ByteString
+encodeToBase64 bs =
+   case B64.encode bs of
+     encoded | C.null encoded -> Left "Failed to encode base64."
+             | otherwise -> Right encoded
 
 decodeFromBase64 :: C.ByteString -> Either String C.ByteString
 decodeFromBase64 bs =
@@ -112,15 +112,26 @@ octToInt (x : xs) = x + 8 * octToInt xs
 -- base functions
 -- without the show func, sequences like \n will not be shown as characters but will be executed as newline
 
+dec91 :: String -> String
 dec91 = C.unpack . B91.decode
--- dec91 :: C.ByteString -> Either String String
--- dec91 input = do
---    decoded <- decodeFromBase91 input
---    -- return $ C.unpack decoded
---    -- is the same as
---    return (C.unpack decoded)
-   
+
+-- dec91 :: String -> String
+-- dec91 input =
+--    case B91.decode (C.pack input) of
+--      Right decoded -> C.unpack decoded
+--      Left errMsg -> "Error: " ++ errMsg
+     -- decoded | C.null decoded -> Left "Failed to decode from Base91"
+     --         | otherwise -> Right (C.unpack decoded)
+
+enc91 :: String -> String
 enc91 = B91.encode . BSU.fromString
+
+-- enc91 :: String -> Either String String
+-- enc91 input =
+--    case B91.encode (BSU.fromString input) of
+--      encoded | C.null encoded -> Left "Failed to encode to Base91"
+--              | otherwise -> Right (C.unpack encoded)
+
 dec85 = C.unpack . U.fromRight . B85.decode . BSU.fromString
 enc85 = C.unpack . B85.encode . BSU.fromString
 
@@ -131,12 +142,13 @@ dec64 input =
      Right  byteString -> C.unpack byteString
      Left errMsg -> "Error: " ++ errMsg
 
-enc64 = C.unpack . B64.encode . BSU.fromString
--- enc64 :: String -> Either String String
--- enc64 input = do
---    byteString <- convertToByteString input
---    encoded <- encodeToBase64 byteString
---    return $ BS.unpack encoded
+-- enc64 = C.unpack . B64.encode . BSU.fromString
+enc64 :: String -> String
+enc64 input =
+   case encodeToBase64 (BSU.fromString input) of
+     Right byteString -> C.unpack byteString
+     Left errMsg -> "Error: " ++ errMsg
+
 
 dec64url = C.unpack . U.fromRight . B64U.decode . BSU.fromString
 enc64url = C.unpack . B64U.encode . BSU.fromString