libzui 0.0.3

A Terminal UI Library, Written in Rust
Documentation 
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// System Specific Functions
// Not portable outside of Linux due to use of Linux specific feature

// Imports
use libc::TIOCGWINSZ;
use std::env::consts::OS;
use std::os::raw;

// Get terminal size
#[derive(Debug)]
#[repr(C)]
struct WinSize {
    pub ws_row: raw::c_ushort,
    pub ws_col: raw::c_ushort,
    pub ws_xpixel: raw::c_ushort,
    pub ws_ypixel: raw::c_ushort,
}

extern "C" {
    fn ioctl(fd: raw::c_int, request: raw::c_ulong, ...) -> raw::c_int;
}

type Size = ((u16, u16), (u16, u16));
pub fn term_size() -> Size {
    let mut size: WinSize;
    unsafe {
        size = core::mem::zeroed();

        assert!(
            !(ioctl(1, TIOCGWINSZ, &mut size) == -1),
            "Could not determine terminal size."
        );
        assert!(
            !(OS == "windows"),
            "How many times must I remind you not to use Windows, huh?"
        );
    }

    ((size.ws_col, size.ws_row), (size.ws_xpixel, size.ws_ypixel))
}

// Enter Raw mode
pub use libc::termios as Termios;

extern "C" {
    fn tcgetattr(fd: raw::c_int, termios: &mut Termios) -> raw::c_int;

    fn tcsetattr(fd: raw::c_int, optional_actions: raw::c_int, termios: &mut Termios)
        -> raw::c_int;

    fn cfmakeraw(termios: &mut Termios);

}

// TODO: Add error handling
pub fn get_attr() -> Termios {
    unsafe {
        let mut termios = core::mem::zeroed();
        tcgetattr(1, &mut termios);
        termios
    }
}

pub fn set_attr(termios: &mut Termios) {
    unsafe {
        tcsetattr(1, 0, termios);
    }
}

pub fn set_raw(termios: &mut Termios) {
    unsafe {
        cfmakeraw(termios);
    }
}