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use std::fs::File;
use std::io::Error;
use std::mem;
use std::os::raw::{c_int, c_ushort};
use std::os::unix::io::AsRawFd;
#[repr(C)]
struct Winsize {
ws_row: c_ushort,
ws_col: c_ushort,
ws_xpixel: c_ushort,
ws_ypixel: c_ushort,
}
const TIOCGWINSZ: c_int = 0x5413;
extern "C" {
fn ioctl(fd: c_int, request: c_int, ...) -> c_int;
}
pub fn get_terminal_size() -> Result<(u16, u16), Error> {
let stdout = File::open("/dev/tty")?;
let fd = stdout.as_raw_fd();
let mut ws: Winsize = unsafe { mem::zeroed() };
let result = unsafe { ioctl(fd, TIOCGWINSZ, &mut ws) };
if result == -1 {
return Err(Error::last_os_error());
}
Ok((ws.ws_col, ws.ws_row))
}
#[repr(C)]
pub struct SigAction {
pub sa_sigaction: usize,
pub sa_mask: SigSet,
pub sa_flags: c_int,
pub sa_restorer: Option<unsafe extern "C" fn()>,
}
#[repr(C)]
pub struct SigSet {
pub __val: [u64; 16],
}
extern "C" {
pub fn sigemptyset(set: *mut SigSet) -> c_int;
pub fn sigaction(signum: c_int, act: *const SigAction, oldact: *mut SigAction) -> c_int;
}
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