Data.UUID.LittleEndian

This library is an extension of the uuid library, allowing one to read and write 'little endian' encoded UUIDs. Some systems, for instance UEFI, chose to defy the simple format of RFC 4122 and use this format.

Modified functions

toByteString :: UUID -> ByteString

Encode a UUID into a ByteString in little-endian-ish byte order.

fromByteString :: ByteString -> Maybe UUID

Extract a UUID from a ByteString in little-endian-ish byte order. The argument must be 16 bytes long, otherwise Nothing is returned.

toWords :: UUID -> (Word32, Word32, Word32, Word32)

Covert a UUID into a sequence of Word32 values. When stored in network byte order, this tuple encodes the UUID in little-endian-ish byte order.

fromWords :: Word32 -> Word32 -> Word32 -> Word32 -> UUID

Create a UUID from a sequence of Word32 values. The opposite of toWords.

Endianity tools

swapTupleEndianity :: (Word32, Word32, Word32, Word32) -> (Word32, Word32, Word32, Word32)

Swaps the endianity of a UUID Word32 tuple.

swapListEndianity :: [Word8] -> [Word8]

Swaps the endianity of a UUID byte list, if the list is at least eight bytes long. Otherwise, it returns the original list.