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use crate::error::*;
use std::os::unix::io::AsRawFd as _;
pub struct RawGuard {
termios: nix::sys::termios::Termios,
cleaned_up: bool,
}
impl RawGuard {
#[allow(clippy::new_without_default)]
pub fn new() -> Result<Self> {
let stdin = std::io::stdin().as_raw_fd();
let termios =
nix::sys::termios::tcgetattr(stdin).map_err(Error::SetRaw)?;
let mut termios_raw = termios.clone();
nix::sys::termios::cfmakeraw(&mut termios_raw);
nix::sys::termios::tcsetattr(
stdin,
nix::sys::termios::SetArg::TCSANOW,
&termios_raw,
)
.map_err(Error::SetRaw)?;
Ok(Self {
termios,
cleaned_up: false,
})
}
pub fn cleanup(&mut self) -> Result<()> {
if self.cleaned_up {
return Ok(());
}
self.cleaned_up = true;
let stdin = std::io::stdin().as_raw_fd();
nix::sys::termios::tcsetattr(
stdin,
nix::sys::termios::SetArg::TCSANOW,
&self.termios,
)
.map_err(Error::UnsetRaw)
}
}
impl Drop for RawGuard {
fn drop(&mut self) {
let _ = self.cleanup();
}
}
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