os/
logging.rs

1/*！
2
3本模块利用 log crate 为你提供了日志功能，使用方式见 main.rs.
4
5*/
6
7use log::{self, Level, LevelFilter, Log, Metadata, Record};
8
9struct SimpleLogger;
10
11impl Log for SimpleLogger {
12    fn enabled(&self, _metadata: &Metadata) -> bool {
13        true
14    }
15    fn log(&self, record: &Record) {
16        if !self.enabled(record.metadata()) {
17            return;
18        }
19        let color = match record.level() {
20            Level::Error => 31, // Red
21            Level::Warn => 93,  // BrightYellow
22            Level::Info => 34,  // Blue
23            Level::Debug => 32, // Green
24            Level::Trace => 90, // BrightBlack
25        };
26        println!(
27            "\u{1B}[{}m[{:>5}] {}\u{1B}[0m",
28            color,
29            record.level(),
30            record.args(),
31        );
32    }
33    fn flush(&self) {}
34}
35
36pub fn init() {
37    static LOGGER: SimpleLogger = SimpleLogger;
38    log::set_logger(&LOGGER).unwrap();
39    log::set_max_level(match option_env!("LOG") {
40        Some("ERROR") => LevelFilter::Error,
41        Some("WARN") => LevelFilter::Warn,
42        Some("INFO") => LevelFilter::Info,
43        Some("DEBUG") => LevelFilter::Debug,
44        Some("TRACE") => LevelFilter::Trace,
45        _ => LevelFilter::Info,
46    });
47}
os/logging.rs

os/
logging.rs
