| License | BSD-style |
|---|---|
| Maintainer | Vincent Hanquez <vincent@snarc.org> |
| Stability | experimental |
| Portability | unknown |
| Safe Haskell | None |
| Language | Haskell2010 |
Data.Memory.Encoding.Base64
Description
Low-level Base64 encoding and decoding.
If you just want to encode or decode some bytes, you probably want to use the Data.ByteArray.Encoding module.
Synopsis
- toBase64 :: Ptr Word8 -> Ptr Word8 -> Int -> IO ()
- toBase64URL :: Bool -> Ptr Word8 -> Ptr Word8 -> Int -> IO ()
- toBase64OpenBSD :: Ptr Word8 -> Ptr Word8 -> Int -> IO ()
- unBase64Length :: Ptr Word8 -> Int -> IO ( Maybe Int )
- unBase64LengthUnpadded :: Int -> Maybe Int
- fromBase64 :: Ptr Word8 -> Ptr Word8 -> Int -> IO ( Maybe Int )
- fromBase64URLUnpadded :: Ptr Word8 -> Ptr Word8 -> Int -> IO ( Maybe Int )
- fromBase64OpenBSD :: Ptr Word8 -> Ptr Word8 -> Int -> IO ( Maybe Int )
Documentation
toBase64 :: Ptr Word8 -> Ptr Word8 -> Int -> IO () Source #
Transform a number of bytes pointed by
src
to base64 binary representation in
dst
The destination memory need to be of correct size, otherwise it will lead to really bad things.
toBase64URL :: Bool -> Ptr Word8 -> Ptr Word8 -> Int -> IO () Source #
Transform a number of bytes pointed by
src
to, URL-safe base64 binary
representation in
dst
. The result will be either padded or unpadded,
depending on the boolean
padded
argument.
The destination memory need to be of correct size, otherwise it will lead to really bad things.
unBase64Length :: Ptr Word8 -> Int -> IO ( Maybe Int ) Source #
Get the length needed for the destination buffer for a base64 decoding.
if the length is not a multiple of 4, Nothing is returned
unBase64LengthUnpadded :: Int -> Maybe Int Source #
Get the length needed for the destination buffer for an unpadded base64 decoding.
If the length of the encoded string is a multiple of 4, plus one, Nothing is returned. Any other value can be valid without padding.