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580d9cedc7
* 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
87 lines
1.9 KiB
V
87 lines
1.9 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://github.com/openbsd/src/blob/master/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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