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#[macro_use]
extern crate anyhow;
mod bar;
mod blocks_cache;
mod button_manager;
mod color;
mod config;
mod event_loop;
mod i3bar_protocol;
mod output;
mod pointer_btn;
mod protocol;
mod shared_state;
mod state;
mod status_cmd;
mod text;
mod utils;
mod wm_info_provider;
use std::io::{self, ErrorKind};
use std::os::fd::{AsRawFd, RawFd};
use std::path::PathBuf;
use clap::Parser;
use signal_hook::consts::*;
use wayrs_client::{Connection, IoMode};
use event_loop::EventLoop;
use state::State;
#[derive(Parser)]
#[command(author, version, about, long_about = None)]
struct Cli {
/// The path to a config file.
#[arg(short, long, value_name = "FILE")]
config: Option<PathBuf>,
}
fn main() -> anyhow::Result<()> {
let args = Cli::parse();
let [sig_read, sig_write] = pipe(libc::O_NONBLOCK | libc::O_CLOEXEC)?;
signal_hook::low_level::pipe::register(SIGUSR1, sig_write)?;
let mut conn = Connection::connect()?;
conn.blocking_roundtrip()?;
let mut el = EventLoop::new();
let mut state = State::new(&mut conn, &mut el, args.config.as_deref());
conn.flush(IoMode::Blocking)?;
el.add_on_idle(|ctx| {
ctx.conn.flush(IoMode::Blocking)?;
Ok(event_loop::Action::Keep)
});
el.register_with_fd(sig_read, move |ctx| {
let mut buf = [0u8];
assert_eq!(
unsafe { libc::read(sig_read, buf.as_mut_ptr().cast(), 1) },
1
);
ctx.state.toggle_visibility(ctx.conn);
Ok(event_loop::Action::Keep)
});
el.register_with_fd(conn.as_raw_fd(), |ctx| {
match ctx.conn.recv_events(IoMode::NonBlocking) {
Ok(()) => ctx.conn.dispatch_events(ctx.state),
Err(e) if e.kind() == ErrorKind::WouldBlock => (),
Err(e) => bail!(e),
}
Ok(event_loop::Action::Keep)
});
if let Some(fd) = state.status_cmd_fd() {
el.register_with_fd(fd, |ctx| {
match ctx
.state
.shared_state
.status_cmd
.as_mut()
.unwrap()
.receive_blocks()
{
Ok(None) => Ok(event_loop::Action::Keep),
Ok(Some(blocks)) => {
ctx.state.set_blocks(ctx.conn, blocks);
Ok(event_loop::Action::Keep)
}
Err(e) => {
let _ = ctx
.state
.shared_state
.status_cmd
.take()
.unwrap()
.child
.kill();
ctx.state.set_error(ctx.conn, "status", e);
Ok(event_loop::Action::Unregister)
}
}
});
}
el.run(&mut conn, &mut state)?;
unreachable!();
}
fn pipe(flags: libc::c_int) -> io::Result<[RawFd; 2]> {
let mut fds = [0; 2];
if unsafe { libc::pipe2(fds.as_mut_ptr(), flags) } == -1 {
Err(io::Error::last_os_error())
} else {
Ok(fds)
}
}
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