pub mod colors;
pub mod buffer;

use core::fmt;
use lazy_static::lazy_static;
use spin::Mutex;

lazy_static! {
    pub static ref WRITER: Mutex<buffer::Writer> = Mutex::new(buffer::Writer {
        column_position: 0,
        color_code: colors::ColorCode::new(colors::Color::Yellow, colors::Color::Black),
        buffer: unsafe { &mut *(0xb8000 as *mut buffer::Buffer) },
    });
}

#[macro_export]
macro_rules! println {
    () => (print!("\n"));
    ($($arg:tt)*) => (print!("{}\n", format_args!($($arg)*)));
}

#[macro_export]
macro_rules! print {
    ($($arg:tt)*) => ($crate::io::vga::_print(format_args!($($arg)*)));
}

#[doc(hidden)]
pub fn _print(args: fmt::Arguments) {
    use core::fmt::Write;
    WRITER.lock().write_fmt(args).unwrap();
}