-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathfmtlogger.rs
More file actions
88 lines (77 loc) · 2.73 KB
/
Copy pathfmtlogger.rs
File metadata and controls
88 lines (77 loc) · 2.73 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
use std::sync::OnceLock;
use log::{Level, LevelFilter, Log, Metadata, Record};
const CLICOLOR_FORCE: &str = "CLICOLOR_FORCE";
/// Implements [`Log`] and a set of simple builder methods for configuration.
struct Logger {
/// Global logging level when using this type
level: LevelFilter,
}
impl Default for Logger {
fn default() -> Self {
Logger {
level: LevelFilter::Trace,
}
}
}
impl Log for Logger {
fn enabled(&self, metadata: &Metadata) -> bool {
&metadata.level().to_level_filter() <= &self.level
}
fn log(&self, record: &Record) {
if self.enabled(record.metadata()) {
let target = if record.target().is_empty() {
record.module_path().unwrap_or_default()
} else {
record.target()
};
const BLUE: &str = "\x1B[34m";
const RED: &str = "\x1B[31m";
const YELLOW: &str = "\x1B[33m";
const WHITE: &str = "\x1B[37m";
const RESET: &str = "\x1B[0m";
let color = match record.level() {
Level::Error => RED,
Level::Warn => YELLOW,
Level::Info => WHITE,
Level::Debug => BLUE,
Level::Trace => "",
};
let supports_color =
atty::is(atty::Stream::Stderr) || std::env::var(CLICOLOR_FORCE).is_ok();
let mut log = if let Some((file, line)) = record.file().zip(record.line()) {
format!(
"{file}:{line} [{}][{target}]: {}",
record.level(),
record.args(),
)
} else {
format!("[{}][{target}]: {}", record.level(), record.args())
};
if supports_color {
log = format!("{}{}{}", color, log, RESET);
}
eprintln!("{}", log);
}
}
fn flush(&self) {}
}
pub fn default() {
static LOGGER: OnceLock<Logger> = OnceLock::new();
let logger = LOGGER.get_or_init(|| Logger {
level: std::env::var("RUST_LOG")
.map(|x| match x.as_str() {
"warn" => log::LevelFilter::Warn,
"trace" => log::LevelFilter::Trace,
"error" => log::LevelFilter::Error,
"info" => log::LevelFilter::Info,
"debug" => log::LevelFilter::Debug,
_ => log::LevelFilter::Trace,
})
.unwrap_or(log::LevelFilter::Trace),
});
log::set_max_level(logger.level);
if let Err(err) = log::set_boxed_logger(Box::new(logger)) {
// used const to allow for static lifetime
eprintln!("attaching logger failed! shouldn't be possible: {:?}", err);
}
}