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// will uncomment this once it is closer to release
// #![warn(clippy::cargo)]
#![warn(clippy::pedantic)]
#![warn(clippy::nursery)]
#![warn(clippy::as_conversions)]
#![warn(clippy::get_unwrap)]
#![allow(clippy::cognitive_complexity)]
#![allow(clippy::missing_const_for_fn)]
#![allow(clippy::similar_names)]
#![allow(clippy::struct_excessive_bools)]
#![allow(clippy::too_many_arguments)]
#![allow(clippy::too_many_lines)]
#![allow(clippy::type_complexity)]
// this isn't super relevant in a binary - if it's actually a problem, we'll
// just get a compilation failure
#![allow(clippy::future_not_send)]
mod env;
mod format;
mod info;
mod mutex;
mod parse;
mod prelude;
mod runner;
mod shell;
use prelude::*;
async fn async_main(
shell_write: Option<&async_std::fs::File>,
) -> anyhow::Result<i32> {
if std::env::args().nth(1).as_deref() == Some("-c") {
return runner::run(
std::env::args().nth(2).as_deref().unwrap(),
shell_write,
)
.await;
}
shell::main().await
}
fn main() {
// need to do this here because the async-std executor allocates some fds,
// and so in the case where we aren't being called from the main shell and
// fd 3 wasn't preallocated in advance, we need to be able to tell that
// before async-std opens something on fd 3
let shell_write = if nix::sys::stat::fstat(3).is_ok() {
nix::fcntl::fcntl(
3,
nix::fcntl::FcntlArg::F_SETFD(nix::fcntl::FdFlag::FD_CLOEXEC),
)
.unwrap();
// Safety: we don't create File instances for or read/write data on fd
// 3 anywhere else
Some(unsafe { async_std::fs::File::from_raw_fd(3) })
} else {
None
};
match async_std::task::block_on(async_main(shell_write.as_ref())) {
Ok(code) => {
std::process::exit(code);
}
Err(e) => {
eprintln!("nbsh: {}", e);
std::process::exit(1);
}
};
}
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