+guessMIMEType ∷ LS.ByteString → MIMEType
+{-# INLINEABLE guessMIMEType #-}
+guessMIMEType = read
+ ∘ unsafePerformIO
+ ∘ flip BS.unsafeUseAsCStringLen (magicCString magic)
+ ∘ BS.concat
+ ∘ LS.toChunks
+ where
+ magic ∷ Magic
+ {-# NOINLINE magic #-}
+ magic = unsafePerformIO
+ $ do m ← magicOpen [MagicMime]
+ magicLoadDefault m
+ return m
+
+isSafeChar ∷ Char → Bool
+{-# INLINEABLE isSafeChar #-}
+isSafeChar c
+ | c ≡ '/' = True
+ | isReserved c = False
+ | isUnreserved c = True
+ | otherwise = False
+
+mkQueryString ∷ [(T.Text, T.Text)] → String
+{-# INLINEABLE mkQueryString #-}
+mkQueryString = intercalate ";" ∘ map pairToStr
+ where
+ pairToStr ∷ (T.Text, T.Text) → String
+ {-# INLINE pairToStr #-}
+ pairToStr (k, v)
+ = encode k ⧺ ('=':encode v)