{-# LANGUAGE CPP #-}
#if __GLASGOW_HASKELL__ >= 702
{-# LANGUAGE Trustworthy #-}
#endif
module Data.ByteString.Base64
( encode
, decode
, decodeLenient
) where
import Data.ByteString.Base64.Internal
import qualified Data.ByteString as B
import Data.ByteString.Internal (ByteString(..))
import Data.Word (Word8)
import Foreign.ForeignPtr (ForeignPtr)
encode :: ByteString -> ByteString
encode :: ByteString -> ByteString
encode ByteString
s = Padding -> EncodeTable -> ByteString -> ByteString
encodeWith Padding
Padded (ByteString -> EncodeTable
mkEncodeTable ByteString
alphabet) ByteString
s
decode :: ByteString -> Either String ByteString
decode :: ByteString -> Either String ByteString
decode ByteString
s = Padding
-> ForeignPtr Word8 -> ByteString -> Either String ByteString
decodeWithTable Padding
Padded ForeignPtr Word8
decodeFP ByteString
s
decodeLenient :: ByteString -> ByteString
decodeLenient :: ByteString -> ByteString
decodeLenient ByteString
s = ForeignPtr Word8 -> ByteString -> ByteString
decodeLenientWithTable ForeignPtr Word8
decodeFP ByteString
s
alphabet :: ByteString
alphabet :: ByteString
alphabet = [Word8] -> ByteString
B.pack ([Word8] -> ByteString) -> [Word8] -> ByteString
forall a b. (a -> b) -> a -> b
$ [Word8
65..Word8
90] [Word8] -> [Word8] -> [Word8]
forall a. [a] -> [a] -> [a]
++ [Word8
97..Word8
122] [Word8] -> [Word8] -> [Word8]
forall a. [a] -> [a] -> [a]
++ [Word8
48..Word8
57] [Word8] -> [Word8] -> [Word8]
forall a. [a] -> [a] -> [a]
++ [Word8
43,Word8
47]
{-# NOINLINE alphabet #-}
decodeFP :: ForeignPtr Word8
#if MIN_VERSION_bytestring(0,11,0)
BS decodeFP _ =
#else
PS ForeignPtr Word8
decodeFP Int
_ Int
_ =
#endif
[Word8] -> ByteString
B.pack ([Word8] -> ByteString) -> [Word8] -> ByteString
forall a b. (a -> b) -> a -> b
$ Int -> Word8 -> [Word8]
forall a. Int -> a -> [a]
replicate Int
43 Word8
forall a. Integral a => a
x
[Word8] -> [Word8] -> [Word8]
forall a. [a] -> [a] -> [a]
++ [Word8
62,Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
x,Word8
63]
[Word8] -> [Word8] -> [Word8]
forall a. [a] -> [a] -> [a]
++ [Word8
52..Word8
61]
[Word8] -> [Word8] -> [Word8]
forall a. [a] -> [a] -> [a]
++ [Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
done,Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
x]
[Word8] -> [Word8] -> [Word8]
forall a. [a] -> [a] -> [a]
++ [Word8
0..Word8
25]
[Word8] -> [Word8] -> [Word8]
forall a. [a] -> [a] -> [a]
++ [Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
x,Word8
forall a. Integral a => a
x]
[Word8] -> [Word8] -> [Word8]
forall a. [a] -> [a] -> [a]
++ [Word8
26..Word8
51]
[Word8] -> [Word8] -> [Word8]
forall a. [a] -> [a] -> [a]
++ Int -> Word8 -> [Word8]
forall a. Int -> a -> [a]
replicate Int
133 Word8
forall a. Integral a => a
x
{-# NOINLINE decodeFP #-}
x :: Integral a => a
x :: a
x = a
255
{-# INLINE x #-}