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#![deny(warnings)]
#![deny(missing_docs)]
extern crate ansi_term;
extern crate env_logger;
extern crate log;
use std::fmt;
use std::sync::atomic::{AtomicUsize, Ordering, ATOMIC_USIZE_INIT};
use ansi_term::{Color, Style};
use env_logger::LogBuilder;
use log::LogLevel;
struct Level(LogLevel);
impl fmt::Display for Level {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self.0 {
LogLevel::Trace => Color::Purple.paint("TRACE"),
LogLevel::Debug => Color::Blue.paint("DEBUG"),
LogLevel::Info => Color::Green.paint("INFO "),
LogLevel::Warn => Color::Yellow.paint("WARN "),
LogLevel::Error => Color::Red.paint("ERROR")
}.fmt(f)
}
}
static MAX_MODULE_WIDTH: AtomicUsize = ATOMIC_USIZE_INIT;
pub fn init() -> Result<(), log::SetLoggerError> {
let mut builder = LogBuilder::new();
builder.format(|record| {
let mut module_path = record.location().module_path().to_string();
let max_width = MAX_MODULE_WIDTH.load(Ordering::Relaxed);
if max_width > module_path.len() {
let diff = max_width - module_path.len();
module_path.extend(::std::iter::repeat(' ').take(diff));
} else {
MAX_MODULE_WIDTH.store(module_path.len(), Ordering::Relaxed);
}
format!("{}:{}: {}",
Level(record.level()),
Style::new().bold().paint(module_path),
record.args())
});
if let Ok(s) = ::std::env::var("RUST_LOG") {
builder.parse(&s);
}
builder.init()
}