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Implement support for Rust's formatting macros

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Philipp Oppermann
2019-01-25 13:18:13 +01:00
parent d1897af515
commit cbfe6221bd
1 changed files with 11 additions and 2 deletions
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13
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)]
@@ -88,7 +89,15 @@ impl Writer {
fn new_line(&mut self) {/* TODO */} fn new_line(&mut self) {/* TODO */}
} }
impl fmt::Write for Writer {
fn write_str(&mut self, s: &str) -> fmt::Result {
self.write_string(s);
Ok(())
}
}
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::Yellow, Color::Black), color_code: ColorCode::new(Color::Yellow, Color::Black),
@@ -96,6 +105,6 @@ 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();
} }