use fmt;
use io;
use unix::tty;

export type tui = struct {
	out: io::file,
	clear: bool,
};

export fn init() (tui | tty::error) = {
	const f = tty::open()?;
	doclear(f);
	return tui {
		out = f,
		clear = false,
	};

};

fn doclear(out: io::file) void = {
	fmt::fprint(out, "\x1B[2J\x1B[1;1H")!;
};

export fn clear(state: *tui) void = {
	state.clear = true;
	//fmt::fprint(out, "\x1B[2J\x1B[1;1H")!;
};

export fn finish(state: *tui) void = {
	io::close(state.out)!;
};