System.Posix.Terminal
POSIX Terminal support
Terminal support
Terminal attributes
data TerminalAttributes Source #
getTerminalAttributes :: Fd -> IO TerminalAttributes Source #
getTerminalAttributes fd calls tcgetattr to obtain
the TerminalAttributes associated with Fd fd.
data TerminalState Source #
Constructors
| Immediately | |
| WhenDrained | |
| WhenFlushed |
setTerminalAttributes :: Fd -> TerminalAttributes -> TerminalState -> IO () Source #
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 Source #
Constructors
terminalMode :: TerminalMode -> TerminalAttributes -> Bool Source #
bitsPerByte :: TerminalAttributes -> Int Source #
withBits :: TerminalAttributes -> Int -> TerminalAttributes Source #
data ControlCharacter Source #
withCC :: TerminalAttributes -> (ControlCharacter, Char) -> TerminalAttributes Source #
inputTime :: TerminalAttributes -> Int Source #
withTime :: TerminalAttributes -> Int -> TerminalAttributes Source #
minInput :: TerminalAttributes -> Int Source #
Constructors
| B0 | |
| B50 | |
| B75 | |
| B110 | |
| B134 | |
| B150 | |
| B200 | |
| B300 | |
| B600 | |
| B1200 | |
| B1800 | |
| B2400 | |
| B4800 | |
| B9600 | |
| B19200 | |
| B38400 | |
| B57600 | |
| B115200 |
Terminal operations
sendBreak :: Fd -> Int -> IO () Source #
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 () Source #
drainOutput fd calls tcdrain to block until all output
written to Fd fd has been transmitted.
Throws IOError ("unsupported operation") if platform does not
provide tcdrain(3) (use #if HAVE_TCDRAIN CPP guard to
detect availability).
data QueueSelector Source #
Constructors
| InputQueue | |
| OutputQueue | |
| BothQueues |
discardData :: Fd -> QueueSelector -> IO () Source #
discardData fd queues calls tcflush to discard
pending input and/or output for Fd fd,
as indicated by the QueueSelector queues.
data FlowAction Source #
Constructors
| SuspendOutput | TCOOFF |
| RestartOutput | TCOON |
| TransmitStop | TCIOFF |
| TransmitStart | TCION |
controlFlow :: Fd -> FlowAction -> IO () Source #
controlFlow fd action calls tcflow to control the
flow of data on Fd fd, as indicated by
action.
Process groups
getTerminalProcessGroupID :: Fd -> IO ProcessGroupID Source #
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 () Source #
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 Source #
queryTerminal fd calls isatty to determine whether or
not Fd fd is associated with a terminal.
getTerminalName :: Fd -> IO FilePath Source #
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 Source #
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.
Throws IOError ("unsupported operation") if platform does not
provide ctermid(3) (use #if HAVE_CTERMID CPP guard to
detect availability).