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|
mod raw_guard;
#[cfg(feature = "async")]
mod main {
use smol::io::{AsyncReadExt as _, AsyncWriteExt as _};
pub async fn run(
child: &async_process::Child,
pty: &pty_process::Pty,
) -> std::result::Result<(), Box<dyn std::error::Error>> {
let _raw = super::raw_guard::RawGuard::new();
let mut input_pty = pty;
let mut output_pty = pty;
let ex = smol::Executor::new();
let input = ex.spawn(async {
let mut buf = [0_u8; 4096];
let mut stdin = smol::Unblock::new(std::io::stdin());
loop {
match stdin.read(&mut buf).await {
Ok(bytes) => {
// engrave Elbereth with ^E
if buf[..bytes].contains(&5u8) {
for byte in buf[..bytes].iter() {
match byte {
5u8 => input_pty
.write_all(b"E- Elbereth\n")
.await
.unwrap(),
_ => input_pty
.write_all(&[*byte])
.await
.unwrap(),
}
}
} else {
input_pty.write_all(&buf[..bytes]).await.unwrap();
}
}
Err(e) => {
eprintln!("stdin read failed: {:?}", e);
break;
}
}
}
});
let output = ex.spawn(async {
let mut buf = [0_u8; 4096];
let mut stdout = smol::Unblock::new(std::io::stdout());
#[allow(clippy::trivial_regex)]
let re = regex::bytes::Regex::new("Elbereth").unwrap();
loop {
match output_pty.read(&mut buf).await {
Ok(bytes) => {
// highlight successful Elbereths
if re.is_match(&buf[..bytes]) {
stdout
.write_all(&re.replace_all(
&buf[..bytes],
&b"\x1b[35m$0\x1b[m"[..],
))
.await
.unwrap();
} else {
stdout.write_all(&buf[..bytes]).await.unwrap();
}
stdout.flush().await.unwrap();
}
Err(e) => {
eprintln!("pty read failed: {:?}", e);
break;
}
}
}
});
let wait = async {
child.status_no_drop().await.unwrap();
};
ex.run(smol::future::or(smol::future::or(input, output), wait))
.await;
Ok(())
}
}
#[cfg(feature = "async")]
fn main() {
use std::os::unix::process::ExitStatusExt as _;
let (w, h) = if let Some((w, h)) = term_size::dimensions() {
(w as u16, h as u16)
} else {
(80, 24)
};
let status = smol::block_on(async {
let pty = pty_process::Pty::new().unwrap();
pty.resize(pty_process::Size::new(h, w)).unwrap();
let mut child =
pty_process::Command::new("nethack").spawn(&pty).unwrap();
main::run(&child, &pty).await.unwrap();
child.status().await.unwrap()
});
std::process::exit(
status
.code()
.unwrap_or_else(|| status.signal().unwrap_or(0) + 128),
);
}
#[cfg(not(feature = "async"))]
fn main() {
unimplemented!()
}
|
