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99 lines
2.3 KiB
V
99 lines
2.3 KiB
V
// Copyright (c) 2019-2023 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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//
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// Serves as more advanced input method
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// based on the work of https://github.com/AmokHuginnsson/replxx
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//
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module termios
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#include <termios.h>
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#include <sys/ioctl.h>
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// https://web.mit.edu/freebsd/head/sys/sys/_termios.h
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const cclen = 20
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type TcFlag = int
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type Speed = int
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type Cc = u8
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// Termios stores the terminal options
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struct C.termios {
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mut:
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c_iflag TcFlag
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c_oflag TcFlag
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c_cflag TcFlag
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c_lflag TcFlag
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c_cc [cclen]Cc
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c_ispeed Speed
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c_ospeed Speed
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}
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fn C.tcgetattr(fd int, termios_p &C.termios) int
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fn C.tcsetattr(fd int, optional_actions int, const_termios_p &C.termios) int
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fn C.ioctl(fd int, request u64, arg voidptr) int
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// flag provides a termios flag of the correct size
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// for the underlying C.termios structure
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[inline]
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pub fn flag(value int) TcFlag {
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return int(value)
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}
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// invert is a platform dependant way to bitwise NOT (~) TcFlag
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// as its length varies across platforms
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[inline]
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pub fn invert(value TcFlag) TcFlag {
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return ~int(value)
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}
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pub struct Termios {
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pub mut:
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c_iflag TcFlag
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c_oflag TcFlag
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c_cflag TcFlag
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c_lflag TcFlag
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c_cc [cclen]Cc
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c_ispeed Speed
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c_ospeed Speed
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}
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// tcgetattr is an unsafe wrapper around C.termios and keeps its semantic
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[inline]
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pub fn tcgetattr(fd int, mut termios_p Termios) int {
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unsafe {
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return C.tcgetattr(fd, &C.termios(termios_p))
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}
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}
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// tcsetattr is an unsafe wrapper around C.termios and keeps its semantic
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[inline]
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pub fn tcsetattr(fd int, optional_actions int, mut termios_p Termios) int {
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unsafe {
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return C.tcsetattr(fd, optional_actions, &C.termios(termios_p))
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}
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}
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// ioctl is an unsafe wrapper around C.ioctl and keeps its semantic
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[inline]
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pub fn ioctl(fd int, request u64, arg voidptr) int {
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unsafe {
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return C.ioctl(fd, request, arg)
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}
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}
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// set_state applies the flags in the `new_state` to the descriptor `fd`.
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pub fn set_state(fd int, new_state Termios) int {
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mut x := new_state
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return tcsetattr(0, C.TCSANOW, mut x)
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}
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// disable_echo disables echoing characters as they are typed,
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// when that Termios state is later set with termios.set_state(fd,t)
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pub fn (mut t Termios) disable_echo() {
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t.c_lflag &= invert(C.ECHO)
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}
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