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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 icon;
mod output;
mod pointer_btn;
mod protocol;
mod shared_state;
mod state;
mod status_cmd;
mod text;
mod tray;
mod utils;
mod wm_info_provider;
use std::env;
use std::io::{self, ErrorKind, Read};
use std::os::fd::{AsRawFd, RawFd};
use std::path::PathBuf;
use anyhow::Context;
use clap::Parser;
use daemonize::Daemonize;
use signal_hook::consts::*;
use wayrs_client::{Connection, IoMode};
use config::{Config, ConfigWatcher};
use event_loop::{Action, Callback, EventLoop};
use state::State;
#[derive(Parser)]
#[command(author, version, about, long_about = None)]
struct Cli {
#[arg(short, long, value_name = "FILE", help = "The path to a config file")]
config: Option<PathBuf>,
#[arg(long, help = "Keep the bar attached to the current terminal")]
foreground: bool,
}
fn status_callback(fd: RawFd) -> Callback {
Box::new(move |ctx| {
if ctx.state.status_cmd_fd() != Some(fd) {
return Ok(Action::Unregister);
}
match ctx
.state
.shared_state
.status_cmd
.as_mut()
.unwrap()
.receive_blocks()
{
Ok(None) => Ok(Action::Keep),
Ok(Some(blocks)) => {
ctx.state.set_blocks(ctx.conn, blocks);
Ok(Action::Keep)
}
Err(e) => {
let _ = ctx
.state
.shared_state
.status_cmd
.take()
.unwrap()
.child
.kill();
ctx.state.set_error(ctx.conn, "status", e);
Ok(Action::Unregister)
}
}
})
}
fn main() -> anyhow::Result<()> {
let args = Cli::parse();
let config_path = Config::path(args.config.as_deref());
if !args.foreground {
let working_directory = env::current_dir().context("failed to read working directory")?;
Daemonize::new()
.working_directory(working_directory)
.start()
.context("failed to start in the background")?;
}
let (mut sig_read, sig_write) = io::pipe()?;
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, config_path.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.as_raw_fd(), move |ctx| {
sig_read.read_exact(&mut [0u8]).unwrap();
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, status_callback(fd));
}
if let Some(config_path) = config_path {
let mut watcher = ConfigWatcher::new(&config_path)
.with_context(|| format!("failed to watch {}", config_path.display()))?;
let watcher_fd = watcher.fd();
el.register_with_fd(watcher_fd, move |ctx| {
if !watcher.changed()? {
return Ok(Action::Keep);
}
match ctx.state.reload_config(ctx.conn, &config_path) {
Ok(Some(fd)) => Ok(Action::KeepAndRegister(fd, status_callback(fd))),
Ok(None) => Ok(Action::Keep),
Err(error) => {
ctx.state.set_error(ctx.conn, "config", error);
Ok(Action::Keep)
}
}
});
}
el.run(&mut conn, &mut state)?;
unreachable!();
}
|
