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#![cfg(feature = "std")]
#![cfg(feature = "expand")]
use io_process::{
command::Command,
coroutines::spawn_then_wait_with_output::{
SpawnThenWaitWithOutput, SpawnThenWaitWithOutputResult,
},
runtimes::std::handle,
};
fn main() {
env_logger::init();
let mut command = Command::new("echo");
command.expand = true;
command.env("HELLO", "world");
command.arg("-n").arg("$USER").arg("$HELLO").arg("~");
println!("spawn: {command:#?}");
println!();
let mut arg = None;
let mut spawn = SpawnThenWaitWithOutput::new(command);
let output = loop {
match spawn.resume(arg.take()) {
SpawnThenWaitWithOutputResult::Ok(output) => break output,
SpawnThenWaitWithOutputResult::Io(io) => arg = Some(handle(io).unwrap()),
SpawnThenWaitWithOutputResult::Err(err) => panic!("{err}"),
}
};
println!("output: {output:#?}")
}
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