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implemented fmt::Write for Writer

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clizia 2025-08-26 14:36:22 +02:00
parent 237b99941f
commit 2bd6ba35fc
1 changed files with 10 additions and 1 deletions
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11
src/vga_buffer.rs
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@ -1,3 +1,4 @@
use core::fmt;
use volatile::Volatile; use volatile::Volatile;
#[allow(dead_code)] #[allow(dead_code)]
@ -61,6 +62,13 @@ pub struct Writer {
buffer: &'static mut Buffer, buffer: &'static mut Buffer,
} }
impl fmt::Write for Writer {
fn write_str(&mut self, s: &str) -> fmt::Result {
self.write_string(s);
Ok(())
}
}
impl Writer { impl Writer {
pub fn write_byte(&mut self, byte: u8) { pub fn write_byte(&mut self, byte: u8) {
match byte { match byte {
@ -101,6 +109,7 @@ impl Writer {
// function to test things: to be removed // function to test things: to be removed
pub fn print_something() { pub fn print_something() {
use core::fmt::Write;
let mut writer = Writer { let mut writer = Writer {
column_position: 0, column_position: 0,
color_code: ColorCode::new(Color::Pink, Color::Black), color_code: ColorCode::new(Color::Pink, Color::Black),
@ -109,5 +118,5 @@ pub fn print_something() {
writer.write_byte(b'H'); writer.write_byte(b'H');
writer.write_string("ello "); writer.write_string("ello ");
writer.write_string("Wörld!"); write!(writer, "The numbers are {} and {}", 42, 1.0/3.0).unwrap();
} }