System.PIO.Linux

Documentation

type FilePath = String

File and directory names are values of type String

type FileDescriptor = Int

File descriptor numbers are values of type Int

data IOMode

Constructors

ReadMode

WriteMode

ReadWriteMode

Instances

Enum IOMode

Methods

succ :: IOMode -> IOMode

pred :: IOMode -> IOMode

toEnum :: Int -> IOMode

fromEnum :: IOMode -> Int

enumFrom :: IOMode -> [IOMode]

enumFromThen :: IOMode -> IOMode -> [IOMode]

enumFromTo :: IOMode -> IOMode -> [IOMode]

enumFromThenTo :: IOMode -> IOMode -> IOMode -> [IOMode]

fdOpen :: FilePath -> IOMode -> IO FileDescriptor

Computation fdOpen file mode allocates and returns a new, open descriptor to manage the file file. It manages input if mode is ReadMode, output if mode is WriteMode, and both input and output if mode is ReadWriteMode.

fdClose :: FileDescriptor -> IO ()

Computation fdClose fd makes descriptor fd closed.

fdPutBuf :: FileDescriptor -> Ptr a -> Int -> IO ()

fdPutBuf fd buf count writes count 8-bit bytes from the buffer buf to the descriptor fd.

fdGetBuf :: FileDescriptor -> Ptr a -> Int -> IO ()

fdGetBuf fd buf count reads data from the descriptor fd into the buffer buf until either EOF is reached or count 8-bit bytes have been read.