System.Posix.Terminal

setTerminalAttributes fd attr ts calls tcsetattr to change the TerminalAttributes associated with Fd fd to attr, when the terminal is in the state indicated by ts.

data TerminalMode

Constructors

InterruptOnBreak
MapCRtoLF
IgnoreBreak
IgnoreCR
IgnoreParityErrors
MapLFtoCR
CheckParity
StripHighBit
StartStopInput
StartStopOutput
MarkParityErrors
ProcessOutput
LocalMode
ReadEnable
TwoStopBits
HangupOnClose
EnableParity
OddParity
EnableEcho
EchoErase
EchoKill
EchoLF
ProcessInput
ExtendedFunctions
KeyboardInterrupts
NoFlushOnInterrupt
BackgroundWriteInterrupt

withoutMode :: TerminalAttributes -> TerminalMode -> TerminalAttributes

withMode :: TerminalAttributes -> TerminalMode -> TerminalAttributes

terminalMode :: TerminalMode -> TerminalAttributes -> Bool

bitsPerByte :: TerminalAttributes -> Int

withBits :: TerminalAttributes -> Int -> TerminalAttributes

data ControlCharacter

Constructors

EndOfFile
EndOfLine
Erase
Interrupt
Kill
Quit
Start
Stop
Suspend

controlChar :: TerminalAttributes -> ControlCharacter -> Maybe Char

withCC :: TerminalAttributes -> (ControlCharacter, Char) -> TerminalAttributes

withoutCC :: TerminalAttributes -> ControlCharacter -> TerminalAttributes

inputTime :: TerminalAttributes -> Int

withTime :: TerminalAttributes -> Int -> TerminalAttributes

minInput :: TerminalAttributes -> Int

withMinInput :: TerminalAttributes -> Int -> TerminalAttributes

data BaudRate

Constructors

B0
B50
B75
B110
B134
B150
B200
B300
B600
B1200
B1800
B2400
B4800
B9600
B19200
B38400

inputSpeed :: TerminalAttributes -> BaudRate

withInputSpeed :: TerminalAttributes -> BaudRate -> TerminalAttributes

outputSpeed :: TerminalAttributes -> BaudRate

withOutputSpeed :: TerminalAttributes -> BaudRate -> TerminalAttributes

Terminal operations

sendBreak :: Fd -> Int -> IO ()

sendBreak fd duration calls tcsendbreak to transmit a continuous stream of zero-valued bits on Fd fd for the specified implementation-dependent duration.

drainOutput :: Fd -> IO ()

drainOutput fd calls tcdrain to block until all output written to Fd fd has been transmitted.

data QueueSelector

Constructors

InputQueue
OutputQueue
BothQueues

discardData :: Fd -> QueueSelector -> IO ()

discardData fd queues calls tcflush to discard pending input and/or output for Fd fd, as indicated by the QueueSelector queues.

data FlowAction

Constructors

SuspendOutput	TCOOFF
RestartOutput	TCOON
TransmitStop	TCIOFF
TransmitStart	TCION

controlFlow :: Fd -> FlowAction -> IO ()

controlFlow fd action calls tcflow to control the flow of data on Fd fd, as indicated by action.

Process groups

getTerminalProcessGroupID :: Fd -> IO ProcessGroupID

getTerminalProcessGroupID fd calls tcgetpgrp to obtain the ProcessGroupID of the foreground process group associated with the terminal attached to Fd fd.

setTerminalProcessGroupID :: Fd -> ProcessGroupID -> IO ()

setTerminalProcessGroupID fd pgid calls tcsetpgrp to set the ProcessGroupID of the foreground process group associated with the terminal attached to Fd fd to pgid.

Testing a file descriptor

queryTerminal :: Fd -> IO Bool

queryTerminal fd calls isatty to determine whether or not Fd fd is associated with a terminal.

getTerminalName :: Fd -> IO FilePath

getTerminalName fd calls ttyname to obtain a name associated with the terminal for Fd fd. If fd is associated with a terminal, getTerminalName returns the name of the terminal.

getControllingTerminalName :: IO FilePath

getControllingTerminalName calls ctermid to obtain a name associated with the controlling terminal for the process. If a controlling terminal exists, getControllingTerminalName returns the name of the controlling terminal.

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