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mod raw_guard;
#[cfg(feature = "async")]
mod main {
use tokio::io::{AsyncReadExt as _, AsyncWriteExt as _};
pub async fn run(
child: &mut tokio::process::Child,
pty: &mut pty_process::Pty,
) -> std::result::Result<(), Box<dyn std::error::Error>> {
let _raw = super::raw_guard::RawGuard::new();
let mut in_buf = [0_u8; 4096];
let mut out_buf = [0_u8; 4096];
let mut stdin = tokio::io::stdin();
let mut stdout = tokio::io::stdout();
#[allow(clippy::trivial_regex)]
let re = regex::bytes::Regex::new("Elbereth").unwrap();
loop {
tokio::select! {
bytes = stdin.read(&mut in_buf) => match bytes {
Ok(bytes) => {
// engrave Elbereth with ^E
if in_buf[..bytes].contains(&5u8) {
for byte in in_buf[..bytes].iter() {
match byte {
5u8 => pty
.write_all(b"E- Elbereth\n")
.await
.unwrap(),
_ => pty
.write_all(&[*byte])
.await
.unwrap(),
}
}
} else {
pty.write_all(&in_buf[..bytes]).await.unwrap();
}
}
Err(e) => {
eprintln!("stdin read failed: {:?}", e);
break;
}
},
bytes = pty.read(&mut out_buf) => match bytes {
Ok(bytes) => {
// highlight successful Elbereths
if re.is_match(&out_buf[..bytes]) {
stdout
.write_all(&re.replace_all(
&out_buf[..bytes],
&b"\x1b[35m$0\x1b[m"[..],
))
.await
.unwrap();
} else {
stdout.write_all(&out_buf[..bytes]).await.unwrap();
}
stdout.flush().await.unwrap();
}
Err(e) => {
eprintln!("pty read failed: {:?}", e);
break;
}
},
_ = child.wait() => break,
}
}
Ok(())
}
}
#[cfg(feature = "async")]
#[tokio::main]
async fn main() {
use std::os::unix::process::ExitStatusExt as _;
let mut pty = pty_process::Pty::new().unwrap();
let pts = pty.pts().unwrap();
pty.resize(pty_process::Size::new(24, 80)).unwrap();
let mut child = pty_process::Command::new("nethack").spawn(&pts).unwrap();
main::run(&mut child, &mut pty).await.unwrap();
let status = child.wait().await.unwrap();
std::process::exit(
status
.code()
.unwrap_or_else(|| status.signal().unwrap_or(0) + 128),
);
}
#[cfg(not(feature = "async"))]
fn main() {
unimplemented!()
}
|
