| Safe Haskell | None |
|---|
Raaz.Core.Util
Description
Some useful utility functions and combinators.
- length :: ByteString -> BYTES Int
- replicate :: LengthUnit l => l -> Word8 -> ByteString
- fromByteStringStorable :: Storable k => ByteString -> k
- createFrom :: LengthUnit l => l -> Pointer -> IO ByteString
- withByteString :: ByteString -> (Pointer -> IO a) -> IO a
- unsafeCopyToPointer :: ByteString -> Pointer -> IO ()
- unsafeNCopyToPointer :: LengthUnit n => n -> ByteString -> Pointer -> IO ()
Documentation
replicate :: LengthUnit l => l -> Word8 -> ByteStringSource
A type safe version of replicate
fromByteStringStorable :: Storable k => ByteString -> kSource
Get the value from the bytestring using peek.
createFrom :: LengthUnit l => l -> Pointer -> IO ByteStringSource
The IO action createFrom n cptr creates a bytestring by copying
n bytes from the pointer cptr.
withByteString :: ByteString -> (Pointer -> IO a) -> IO aSource
Works directly on the pointer associated with the
ByteString. This function should only read and not modify the
contents of the pointer.
Copy the bytestring to the crypto buffer. This operation leads to undefined behaviour if the crypto pointer points to an area smaller than the size of the byte string.
Arguments
| :: LengthUnit n | |
| => n | length of data to be copied |
| -> ByteString | The source byte string |
| -> Pointer | The buffer |
| -> IO () |
Similar to unsafeCopyToPointer but takes an additional input
n which is the number of bytes (expressed in type safe length
units) to transfer. This operation leads to undefined behaviour if
either the bytestring is shorter than n or the crypto pointer
points to an area smaller than n.