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|
use {
super::{
argparse::Mode,
subprocess::{stream_into, SubprocCommand},
types::{Abort, Fail},
},
futures::future::try_join,
std::{
collections::HashMap,
env::{self, current_exe},
path::PathBuf,
process::Stdio,
sync::Arc,
},
tokio::{
io::{AsyncWriteExt, BufWriter, ErrorKind},
process::Command,
select,
sync::mpsc::Receiver,
task::{spawn, JoinHandle},
},
which::which,
};
async fn reset_term() -> Result<(), Fail> {
if let Ok(path) = which("tput") {
let status = Command::new(&path)
.kill_on_drop(true)
.stdin(Stdio::null())
.arg("reset")
.status()
.await
.map_err(|e| Fail::IO(path, e.kind()))?;
if status.success() {
return Ok(());
}
}
if let Ok(path) = which("reset") {
let status = Command::new(&path)
.kill_on_drop(true)
.stdin(Stdio::null())
.status()
.await
.map_err(|e| Fail::IO(path, e.kind()))?;
if status.success() {
return Ok(());
}
}
Err(Fail::IO(PathBuf::from("reset"), ErrorKind::NotFound))
}
fn run_fzf(abort: &Arc<Abort>, cmd: SubprocCommand, stream: Receiver<String>) -> JoinHandle<()> {
let abort = abort.clone();
spawn(async move {
let subprocess = Command::new(&cmd.prog)
.kill_on_drop(true)
.args(&cmd.args)
.envs(&cmd.env)
.stdin(Stdio::piped())
.spawn();
match subprocess {
Err(err) => {
abort.send(Fail::IO(cmd.prog, err.kind())).await;
}
Ok(mut child) => {
let mut stdin = child.stdin.take().map(BufWriter::new).expect("nil stdin");
let abort_1 = abort.clone();
let p1 = cmd.prog.clone();
let handle_in = spawn(async move {
stream_into(&abort_1, p1.clone(), &mut stdin, stream).await;
if let Err(err) = stdin.shutdown().await {
abort_1.send(Fail::IO(p1, err.kind())).await;
}
});
let abort_2 = abort.clone();
let p2 = cmd.prog.clone();
let handle_child = spawn(async move {
select! {
_ = abort_2.notified() => {
match child.kill().await {
Err(err) => {
abort_2.send(Fail::IO(p2, err.kind())).await;
},
_ => {
if let Err(err) = reset_term().await {
abort_2.send(err).await;
}
}
}
},
rhs = child.wait() => {
match rhs {
Ok(status) => {
match status.code() {
Some(0 | 1) | None => (),
Some(130) => {
abort_2.send(Fail::Interrupt).await;
}
Some(c) => {
abort_2.send(Fail::BadExit(p2, c)).await;
if let Err(err) = reset_term().await {
abort_2.send(err).await;
}
}
}
}
Err(err) => {
abort_2.send(Fail::IO(p2, err.kind())).await;
}
}
}
}
});
if let Err(err) = try_join(handle_child, handle_in).await {
abort.send(err.into()).await;
}
}
}
})
}
pub fn stream_fzf_proc(
abort: &Arc<Abort>,
bin: PathBuf,
args: Vec<String>,
stream: Receiver<String>,
) -> JoinHandle<()> {
let execute = format!("abort+execute:{}\x04{{+f}}", Mode::PATCH);
let mut arguments = vec![
"--read0".to_owned(),
"--print0".to_owned(),
"-m".to_owned(),
"--ansi".to_owned(),
"--preview-window=70%:wrap".to_owned(),
format!("--bind=enter:{execute}"),
format!("--bind=double-click:{execute}"),
format!("--preview={}\x04{{f}}", Mode::PREVIEW),
];
arguments.extend(args);
let mut fzf_env = HashMap::new();
fzf_env.insert(
Mode::ARGV.to_owned(),
env::args().collect::<Vec<_>>().join("\x04"),
);
fzf_env.insert(
"SHELL".to_owned(),
current_exe()
.or_else(|_| which(env!("CARGO_PKG_NAME")))
.map_or_else(
|_| env!("CARGO_PKG_NAME").to_owned(),
|path| format!("{}", path.display()),
),
);
fzf_env.insert("LC_ALL".to_owned(), "C".to_owned());
let cmd = SubprocCommand {
prog: bin,
args: arguments,
env: fzf_env,
};
run_fzf(abort, cmd, stream)
}
|
