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Use tty_fd for set/get terminal attributes (#501)

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Andrea Jemmett 2020-10-24 16:38:03 +02:00 committed by GitHub
parent 4b1c857914
commit aa8436e41a
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1 changed files with 14 additions and 11 deletions
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25
src/terminal/sys/unix.rs
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@ -1,16 +1,16 @@
//! UNIX related logic for terminal manipulation.
use std::{io, mem, process, sync::Mutex};
use crate::event::sys::unix::file_descriptor::FileDesc;
use crate::event::sys::unix::file_descriptor::{tty_fd, FileDesc};
use lazy_static::lazy_static;
use libc::{
cfmakeraw, ioctl, tcgetattr, tcsetattr, termios as Termios, winsize, STDIN_FILENO,
STDOUT_FILENO, TCSANOW, TIOCGWINSZ,
cfmakeraw, ioctl, tcgetattr, tcsetattr, termios as Termios, winsize, STDOUT_FILENO, TCSANOW,
TIOCGWINSZ,
};
use crate::error::{ErrorKind, Result};
use std::fs::File;
use std::os::unix::io::IntoRawFd;
use std::os::unix::io::{IntoRawFd, RawFd};
lazy_static! {
// Some(Termios) -> we're in the raw mode and this is the previous mode
@ -54,11 +54,13 @@ pub(crate) fn enable_raw_mode() -> Result<()> {
return Ok(());
}
let mut ios = get_terminal_attr()?;
let tty = tty_fd()?;
let fd = tty.raw_fd();
let mut ios = get_terminal_attr(fd)?;
let original_mode_ios = ios;
raw_terminal_attr(&mut ios);
set_terminal_attr(&ios)?;
set_terminal_attr(fd, &ios)?;
// Keep it last - set the original mode only if we were able to switch to the raw mode
*original_mode = Some(original_mode_ios);
@ -70,7 +72,8 @@ pub(crate) fn disable_raw_mode() -> Result<()> {
let mut original_mode = TERMINAL_MODE_PRIOR_RAW_MODE.lock().unwrap();
if let Some(original_mode_ios) = original_mode.as_ref() {
set_terminal_attr(original_mode_ios)?;
let tty = tty_fd()?;
set_terminal_attr(tty.raw_fd(), original_mode_ios)?;
// Keep it last - remove the original mode only if we were able to switch back
*original_mode = None;
}
@ -116,16 +119,16 @@ fn raw_terminal_attr(termios: &mut Termios) {
unsafe { cfmakeraw(termios) }
}
fn get_terminal_attr() -> Result<Termios> {
fn get_terminal_attr(fd: RawFd) -> Result<Termios> {
unsafe {
let mut termios = mem::zeroed();
wrap_with_result(tcgetattr(STDIN_FILENO, &mut termios))?;
wrap_with_result(tcgetattr(fd, &mut termios))?;
Ok(termios)
}
}
fn set_terminal_attr(termios: &Termios) -> Result<bool> {
wrap_with_result(unsafe { tcsetattr(STDIN_FILENO, TCSANOW, termios) })
fn set_terminal_attr(fd: RawFd, termios: &Termios) -> Result<bool> {
wrap_with_result(unsafe { tcsetattr(fd, TCSANOW, termios) })
}
pub fn wrap_with_result(result: i32) -> Result<bool> {