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v/vlib/term/termios/termios_openbsd.c.v
Thomas Mangin 580d9cedc7
termios: new termios module (#17792)
* termio: new termio module

move the tcgetattr and tcsetattr functions in a new termio module.
The code needed refactoring as different OS have different fields
size, position and number for the C.termios structure, which
could not be correctly expressed consitently otherwise.

It has the positive side effect to reduce the number of unsafe calls.
New testing code was also added for the readline module as it is
relying of the feature.

* apply 2023 copyright to the new files too
2023-03-30 08:58:52 +03:00

87 lines
1.9 KiB
V

// Copyright (c) 2019-2023 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
//
// Serves as more advanced input method
// based on the work of https://github.com/AmokHuginnsson/replxx
//
module termios
#include <termios.h>
#include <sys/ioctl.h>
// https://github.com/openbsd/src/blob/master/sys/sys/termios.h
const cclen = 20
type TcFlag = int
type Speed = int
type Cc = u8
// Termios stores the terminal options
struct C.termios {
mut:
c_iflag TcFlag
c_oflag TcFlag
c_cflag TcFlag
c_lflag TcFlag
c_cc [cclen]Cc
c_ispeed Speed
c_ospeed Speed
}
fn C.tcgetattr(fd int, termios_p &C.termios) int
fn C.tcsetattr(fd int, optional_actions int, const_termios_p &C.termios) int
fn C.ioctl(fd int, request u64, arg voidptr) int
// flag provides a termios flag of the correct size
// for the underlying C.termios structure
[inline]
pub fn flag(value int) TcFlag {
return int(value)
}
// invert is a platform dependant way to bitwise NOT (~) TcFlag
// as its length varies across platforms
[inline]
pub fn invert(value TcFlag) TcFlag {
return ~int(value)
}
pub struct Termios {
pub mut:
c_iflag TcFlag
c_oflag TcFlag
c_cflag TcFlag
c_lflag TcFlag
c_cc [cclen]Cc
c_ispeed Speed
c_ospeed Speed
}
// tcgetattr is an unsafe wrapper around C.termios and keeps its semantic
[inline]
pub fn tcgetattr(fd int, mut termios_p Termios) int {
unsafe {
return C.tcgetattr(fd, &C.termios(termios_p))
}
}
// tcsetattr is an unsafe wrapper around C.termios and keeps its semantic
[inline]
pub fn tcsetattr(fd int, optional_actions int, mut termios_p Termios) int {
unsafe {
return C.tcsetattr(fd, optional_actions, &C.termios(termios_p))
}
}
// ioctl is an unsafe wrapper around C.ioctl and keeps its semantic
[inline]
pub fn ioctl(fd int, request u64, arg voidptr) int {
unsafe {
return C.ioctl(fd, request, arg)
}
}