Functions for reading/writing actual arrays of bytes in memory. At the moment,
System.Posix only provides
fdRead :: Fd -> ByteCount -- ^How many bytes to read -> IO (String, ByteCount) -- ^The bytes read, how many bytes were read. fdWrite :: Fd -> String -> IO ByteCount
which are not only wrong (
String?), but too slow for many purposes.
Mon May 11 16:21:02 BST 2009 Simon Marlow <email@example.com> * add fdReadBuf, fdWriteBuf -- | Read data from an 'Fd' into memory. This is exactly equivalent -- to the POSIX @read@ function. fdReadBuf :: Fd -> Ptr Word8 -- ^ Memory in which to put the data -> ByteCount -- ^ Maximum number of bytes to read -> IO Bytecount -- ^ Number of bytes read (zero for EOF) -- | Write data from memory to an 'Fd'. This is exactly equivalent -- to the POSIX @write@ function. fdWriteBuf :: Fd -> Ptr Word8 -- ^ Memory containing the data to write -> ByteCount -- ^ Maximum number of bytes to write -> IO ByteCount -- ^ Number of bytes written
darcs patches are attached.