1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
#[macro_use]
extern crate anyhow;
mod bar;
mod blocks_cache;
mod button_manager;
mod color;
mod config;
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::ErrorKind;
use std::os::unix::io::AsRawFd;
use std::path::PathBuf;
use clap::Parser;
use nix::errno::Errno;
use nix::fcntl::OFlag;
use nix::poll::{poll, PollFd, PollFlags};
use signal_hook::consts::*;
use wayrs_client::{Connection, IoMode};
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) = nix::unistd::pipe2(OFlag::O_NONBLOCK | OFlag::O_CLOEXEC)?;
signal_hook::low_level::pipe::register(SIGUSR1, sig_write)?;
let (mut conn, globals) = Connection::connect_and_collect_globals()?;
let mut state = State::new(&mut conn, &globals, args.config.as_deref());
conn.flush(IoMode::Blocking)?;
let mut fds = Vec::with_capacity(3);
fds.push(PollFd::new(conn.as_raw_fd(), PollFlags::POLLIN));
fds.push(PollFd::new(sig_read, PollFlags::POLLIN));
if let Some(cmd_fd) = state.status_cmd_fd() {
fds.push(PollFd::new(cmd_fd, PollFlags::POLLIN));
}
loop {
match poll(&mut fds, -1) {
Ok(_) => (),
Err(Errno::EINTR) => continue,
Err(e) => bail!(e),
}
if fds[0].any().unwrap_or(false) {
match conn.recv_events(IoMode::NonBlocking) {
Ok(()) => {
conn.dispatch_events(&mut state);
conn.flush(IoMode::Blocking)?;
}
Err(e) if e.kind() == ErrorKind::WouldBlock => (),
Err(e) => bail!(e),
}
}
if fds[1].any().unwrap_or(false) {
nix::unistd::read(sig_read, &mut [0; 1])?;
state.toggle_visibility(&mut conn);
conn.flush(IoMode::Blocking)?;
}
if fds.len() > 2 && fds[2].any().unwrap_or(false) {
match state
.shared_state
.status_cmd
.as_mut()
.unwrap()
.receive_blocks()
{
Ok(None) => (),
Ok(Some(blocks)) => {
state.set_blocks(&mut conn, blocks);
conn.flush(IoMode::Blocking)?;
}
Err(e) => {
let _ = state.shared_state.status_cmd.take().unwrap().child.kill();
fds.pop().unwrap();
state.set_error(&mut conn, e);
conn.flush(IoMode::Blocking)?;
}
}
}
}
}
|
