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#![deny(warnings)]
#![deny(missing_docs)]
extern crate ansi_term;
extern crate env_logger;
extern crate log;
use std::sync::atomic::{AtomicUsize, Ordering, ATOMIC_USIZE_INIT};
use std::time::Instant;
use ansi_term::{Color, Style};
use env_logger::Builder;
use log::Level;
static MAX_MODULE_WIDTH: AtomicUsize = ATOMIC_USIZE_INIT;
static SINCE_WIDTH_INCREASE: AtomicUsize = ATOMIC_USIZE_INIT;
#[inline]
pub fn init() {
try_init().unwrap();
}
pub fn try_init() -> Result<(), log::SetLoggerError> {
try_init_custom_env("RUST_LOG")
}
pub fn init_custom_env(environment_variable_name: &str) {
try_init_custom_env(environment_variable_name).unwrap();
}
pub fn try_init_custom_env(environment_variable_name: &str) -> Result<(), log::SetLoggerError> {
let mut builder = formatted_builder()?;
if let Ok(s) = ::std::env::var(environment_variable_name) {
builder.parse(&s);
}
builder.try_init()
}
pub fn formatted_builder() -> Result<Builder, log::SetLoggerError> {
let mut builder = Builder::new();
let start_time = Instant::now();
builder.format(move |f, record| {
use std::io::Write;
let target = record.target();
let time = start_time.elapsed();
let (color, level) = match record.level() {
Level::Trace => (Color::Purple, " 🤓 T "),
Level::Debug => (Color::Blue, " 🤔 D "),
Level::Info => (Color::Green, " 😋 I "),
Level::Warn => (Color::Yellow, " 😥 W "),
Level::Error => (Color::Red, " 😡 E "),
};
let mut module_iter = target.split("::");
let krate = module_iter.next();
let path = module_iter.last();
let target = format!(
" {}{} ",
krate.unwrap_or_default(),
path.map(|s| format!(":{}", s)).unwrap_or_default()
);
SINCE_WIDTH_INCREASE.fetch_add(1, Ordering::Relaxed);
let mut max_width = MAX_MODULE_WIDTH.load(Ordering::Relaxed);
if max_width <= target.len() {
MAX_MODULE_WIDTH.store(target.len(), Ordering::Relaxed);
max_width = target.len();
SINCE_WIDTH_INCREASE.store(0, Ordering::Relaxed);
} else if SINCE_WIDTH_INCREASE.load(Ordering::Relaxed) > 5 {
MAX_MODULE_WIDTH.store(target.len(), Ordering::Relaxed);
max_width = target.len();
}
writeln!(
f,
"{}{}{}> {}",
Style::new().on(color).fg(Color::White).paint(level),
Style::new()
.on(Color::White)
.fg(Color::Black)
.dimmed()
.bold()
.paint(format!(
" {:.2} ",
time.as_secs() as f64 + (f64::from(time.subsec_millis()) / 1000f64)
)),
Style::new()
.bold()
.paint(format!("{: <width$}", target, width = max_width)),
format!("{}", record.args()).replace(
"\n",
&format!(
"\n{} ",
Style::new().on(color).fg(Color::White).paint(level)
)
)
)
});
Ok(builder)
}