/ 
POSIX-1003-1.02
River stage one • 2 direct dependents • 2 total dependents
/ POSIX::1003::Termios

NAME

POSIX::1003::Termios - POSIX general terminal interface

SYNOPSIS

use POSIX::1003::Termios qw(:speed);
$termios = POSIX::1003::Termios->new;
$ispeed = $termios->getispeed;
$termios->setospeed(B9600);

use POSIX::1003::Termios qw(:functions :actions);
tcsendbreak($fd, $duration);
tcflush($fd, TCIFLUSH);

$tty  = ttyname($fd);
$tty  = ttyname($fh->fileno);

DESCRIPTION

This module provides an interface to the "General Terminal Interfaces", as specified by POSIX. The actual implementation is part of POSIX.xs

METHODS

Constructors

POSIX::1003::Termios->new()

Create a new Termios object. This object will be destroyed automatically when it is no longer needed. A Termios object corresponds to the termios C struct.

$termios = POSIX::1003::Termios->new;

Accessors

$obj->getattr( [$fd] )

Get terminal control attributes (POSIX function tcgetattr). Pass a file descriptor, which defaults to 0 (stdin). Returns undef on failure.

# Obtain the attributes for stdin
$termios->getattr(0);
$termios->getattr();

# Obtain the attributes for stdout
$termios->getattr(1);
$obj->getcc($index)

Retrieve a value from the c_cc field of a termios object. The c_cc field is an array so an index must be specified. $c_cc[1] = $termios->getcc(1);

$obj->getcflag()

Retrieve the c_cflag field of a termios object. $c_cflag = $termios->getcflag;

$obj->getiflag()

Retrieve the c_iflag field of a termios object. $c_iflag = $termios->getiflag;

$obj->getispeed()

Retrieve the input baud rate. $ispeed = $termios->getispeed;

$obj->getlflag()

Retrieve the c_lflag field of a termios object. $c_lflag = $termios->getlflag;

$obj->getoflag()

Retrieve the c_oflag field of a termios object. $c_oflag = $termios->getoflag;

$obj->getospeed()

Retrieve the output baud rate. $ospeed = $termios->getospeed;

$obj->setattr($fd, $flags)

Set terminal control attributes (POSIX function tcsetattr). Returns undef on failure.

# Set attributes immediately for stdout.
$termios->setattr(1, TCSANOW);
$obj->setcc($value, $index)

Set a value in the c_cc field of a termios object. The c_cc field is an array so an index must be specified. $termios->setcc(VEOF, 1 );

$obj->setcflag($flags)

Set the c_cflag field of a termios object. $termios->setcflag( $c_cflag | CLOCAL );

$obj->setiflag($flags)

Set the c_iflag field of a termios object. $termios->setiflag( $c_iflag | BRKINT );

$obj->setispeed()

Set the input baud rate. Returns undef on failure. $termios->setispeed( B9600 );

$obj->setlflag($flags)

Set the c_lflag field of a termios object. $termios->setlflag( $c_lflag | ECHO );

$obj->setoflag($flags)

Set the c_oflag field of a termios object. $termios->setoflag( $c_oflag | OPOST );

$obj->setospeed()

Set the output baud rate. $termios->setospeed( B9600 );

FUNCTIONS

tcdrain($fd)
tcflow($fd, $action)

See the possible $action values in "CONSTANTS", import tag :action

tcflush($fd, $queue)

See the possible $queue values in "CONSTANTS", import tag :flush

tcsendbreak($fd, $duration)

$duration is system dependent.

ttyname($fd)

Returns the path to the special device which relates to the file-descriptor. See also POSIX::1003::Proc::ctermid()

$tty  = ttyname($fd);
$tty  = ttyname($fh->fileno);

CONSTANTS

Available baudrates (ispeed and ospeed), export tag :speed.
B0 B50 B75 B110 B134 B150 B200 B300 B600 B1200
B1800 B2400 B4800 B9600 B19200 B38400
Interface values (getattr and setattr), export tag :actions.
TCSADRAIN TCSANOW TCOON TCION TCSAFLUSH TCIOFF TCOOFF
To be used as tcflush() parameter QUEUE
TCIOFLUSH TCOFLUSH TCIFLUSH
c_cc field values, export tag :flags as have all following constants.
VEOF VEOL VERASE VINTR VKILL VQUIT VSUSP VSTART VSTOP VMIN
VTIME NCCS
c_cflag field values
CLOCAL CREAD CSIZE CS5 CS6 CS7 CS8 CSTOPB HUPCL PARENB PARODD
c_iflag field values
BRKINT ICRNL IGNBRK IGNCR IGNPAR INLCR INPCK ISTRIP IXOFF
IXON PARMRK
c_lflag field values
ECHO ECHOE ECHOK ECHONL ICANON IEXTEN ISIG NOFLSH TOSTOP
c_oflag field values
OPOST

All constants, shown here with the values discovered during installation of this module:

During installation, a symbol table will get inserted here.

SEE ALSO

This module is part of POSIX-1003 distribution version 1.02, built on November 10, 2020. Website: http://perl.overmeer.net/CPAN. The code is based on POSIX, which is released with Perl itself. See also POSIX::Util for additional functionality.

COPYRIGHTS

Copyrights 2011-2020 on the perl code and the related documentation by [Mark Overmeer]. For other contributors see ChangeLog.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://dev.perl.org/licenses/