System.FS.CRC

Support for CRC

Wrap digest functionality

newtype CRC

Constructors

CRC

Fields

• getCRC :: Word32

Instances

Storable CRC

Defined in System.FS.CRC

Methods

sizeOf :: CRC -> Int

alignment :: CRC -> Int

peekElemOff :: Ptr CRC -> Int -> IO CRC

pokeElemOff :: Ptr CRC -> Int -> CRC -> IO ()

peekByteOff :: Ptr b -> Int -> IO CRC

pokeByteOff :: Ptr b -> Int -> CRC -> IO ()

peek :: Ptr CRC -> IO CRC

poke :: Ptr CRC -> CRC -> IO ()

Generic CRC

Defined in System.FS.CRC

Associated Types

type Rep CRC :: Type -> Type

Methods

from :: CRC -> Rep CRC x

to :: Rep CRC x -> CRC

Show CRC

Defined in System.FS.CRC

Methods

showsPrec :: Int -> CRC -> ShowS

show :: CRC -> String

showList :: [CRC] -> ShowS

Eq CRC

Defined in System.FS.CRC

Methods

(==) :: CRC -> CRC -> Bool

(/=) :: CRC -> CRC -> Bool

type Rep CRC

Defined in System.FS.CRC

type Rep CRC = D1 ('MetaData "CRC" "System.FS.CRC" "fs-api-0.3.0.0-9Af060UItM4vLHAUAXnQ0" 'True) (C1 ('MetaCons "CRC" 'PrefixI 'True) (S1 ('MetaSel ('Just "getCRC") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)))

computeCRC :: forall a. CRC32 a => a -> CRC

initCRC :: CRC

updateCRC :: forall a. CRC32 a => a -> CRC -> CRC

File system functions with CRC functionality

hGetAllAtCRC

Arguments

:: forall m h. Monad m

=> HasFS m h

-> Handle h

-> AbsOffset

The offset at which to read.

-> m (ByteString, CRC)

Variation on hGetAllAt that also computes a CRC

hGetExactlyAtCRC

Arguments

:: forall m h. (HasCallStack, MonadThrow m)

=> HasFS m h

-> Handle h

-> Word64

The number of bytes to read.

-> AbsOffset

The offset at which to read.

-> m (ByteString, CRC)

Variation on hGetExactlyAt that also computes a CRC

hPutAllCRC :: forall m h. (HasCallStack, Monad m) => HasFS m h -> Handle h -> ByteString -> m (Word64, CRC)

Variation on hPutAll that also computes a CRC