Data.Bytes.Get

Methods

• skip :: Int -> m ()

  Skip ahead n bytes. Fails if fewer than n bytes are available.

• ensure :: Int -> m ByteString

  If at least n bytes are available return at least that much of the current input. Otherwise fail.

• lookAhead :: m a -> m a

  Run ga, but return without consuming its input. Fails if ga fails.

• lookAheadM :: m (Maybe a) -> m (Maybe a)

  Like lookAhead, but consume the input if gma returns 'Just _'. Fails if gma fails.

• lookAheadE :: m (Either a b) -> m (Either a b)

  Like lookAhead, but consume the input if gea returns 'Right _'. Fails if gea fails.

• getBytes :: Int -> m ByteString

  Pull n bytes from the input, as a strict ByteString.

• remaining :: m (Remaining m)

  Get the number of remaining unparsed bytes. Useful for checking whether all input has been consumed. Note that this forces the rest of the input.

• isEmpty :: m Bool

  Test whether all input has been consumed, i.e. there are no remaining unparsed bytes.

• getWord8 :: m Word8

  Read a Word8 from the monad state

• getByteString :: Int -> m ByteString

  An efficient get method for strict ByteStrings. Fails if fewer than n bytes are left in the input.

• getLazyByteString :: Int64 -> m ByteString

  An efficient get method for lazy ByteStrings. Does not fail if fewer than n bytes are left in the input.

• getWord16be :: m Word16

  Read a Word16 in big endian format

• getWord16le :: m Word16

  Read a Word16 in little endian format

• getWord16host :: m Word16

  O(1). Read a 2 byte Word16 in native host order and host endianness.

• getWord32be :: m Word32

  Read a Word32 in big endian format

• getWord32le :: m Word32

  Read a Word32 in little endian format

• getWord32host :: m Word32

  O(1). Read a Word32 in native host order and host endianness.

• getWord64be :: m Word64

  Read a Word64 in big endian format

• getWord64le :: m Word64

  Read a Word64 in little endian format

• getWord64host :: m Word64

  O(1). Read a Word64 in native host order and host endianness.

• getWordhost :: m Word

  O(1). Read a single native machine word. The word is read in host order, host endian form, for the machine you're on. On a 64 bit machine the Word is an 8 byte value, on a 32 bit machine, 4 bytes.