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use crate::sbi::console_putchar;
use core::fmt::{self, Write};
use log::{self, Level, LevelFilter, Log, Metadata, Record};
struct KernelOutput;
impl Write for KernelOutput {
fn write_str(&mut self, s: &str) -> fmt::Result {
for c in s.chars() {
console_putchar(c as usize);
}
Ok(())
}
}
pub fn print(args: fmt::Arguments) {
KernelOutput.write_fmt(args).unwrap();
}
#[macro_export]
macro_rules! print {
($fmt: literal $(, $($arg: tt)+)?) => {
$crate::console::print(format_args!($fmt $(, $($arg)+)?))
}
}
#[macro_export]
macro_rules! println {
($fmt: literal $(, $($arg: tt)+)?) => {
$crate::console::print(format_args!(concat!($fmt, "\n") $(, $($arg)+)?))
}
}
pub fn log_init() {
static LOGGER: Logger = Logger;
log::set_logger(&LOGGER).unwrap();
log::set_max_level(match option_env!("LOG") {
Some("error") => LevelFilter::Error,
Some("warn") => LevelFilter::Warn,
Some("info") => LevelFilter::Info,
Some("debug") => LevelFilter::Debug,
Some("trace") => LevelFilter::Trace,
_ => LevelFilter::Off,
});
}
struct Logger;
impl Log for Logger {
fn enabled(&self, _metadata: &Metadata) -> bool {
true
}
fn log(&self, record: &Record) {
if !self.enabled(record.metadata()) {
return;
}
print!("\x1b[{}m", level_to_color_code(record.level()));
println!("[{}] {}", record.level(), record.args());
print!("\x1b[0m")
}
fn flush(&self) {}
}
fn level_to_color_code(level: Level) -> u8 {
match level {
Level::Error => 31,
Level::Warn => 93,
Level::Info => 34,
Level::Debug => 32,
Level::Trace => 90,
}
}