Safe Haskell	None
Language	Haskell2010

Raaz.Core.Util

Description

Some useful utility functions and combinators.

Synopsis

Documentation

length :: ByteString -> BYTES Int #

A typesafe length for Bytestring

replicate :: LengthUnit l => l -> Word8 -> ByteString #

A type safe version of replicate

fromByteStringStorable :: Storable k => ByteString -> k #

Get the value from the bytestring using peek.

create :: LengthUnit l => l -> (Pointer -> IO ()) -> IO ByteString #

The action create l act creates a length l bytestring where the contents are filled using the the act to fill the buffer.

createFrom :: LengthUnit l => l -> Pointer -> IO ByteString #

The IO action createFrom n cptr creates a bytestring by copying n bytes from the pointer cptr.

withByteString :: ByteString -> (Pointer -> IO a) -> IO a #

Works directly on the pointer associated with the ByteString. This function should only read and not modify the contents of the pointer.

unsafeCopyToPointer #

Arguments

:: ByteString	The source.
-> Pointer	The destination.
-> IO ()

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.

unsafeNCopyToPointer #

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.