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use std::str::FromStr;
use std::fmt;
use log::{self, Log, LogLevel, LogRecord, LogMetadata};
use term_painter::Color::*;
use term_painter::ToStyle;
struct RocketLogger(LoggingLevel);
#[derive(PartialEq, Eq, Debug, Clone, Copy)]
pub enum LoggingLevel {
Critical,
Normal,
Debug,
}
impl LoggingLevel {
#[inline(always)]
fn max_log_level(&self) -> LogLevel {
match *self {
LoggingLevel::Critical => LogLevel::Warn,
LoggingLevel::Normal => LogLevel::Info,
LoggingLevel::Debug => LogLevel::Trace,
}
}
}
impl FromStr for LoggingLevel {
type Err = ();
fn from_str(s: &str) -> Result<Self, Self::Err> {
let level = match s {
"critical" => LoggingLevel::Critical,
"normal" => LoggingLevel::Normal,
"debug" => LoggingLevel::Debug,
_ => return Err(())
};
Ok(level)
}
}
impl fmt::Display for LoggingLevel {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let string = match *self {
LoggingLevel::Critical => "critical",
LoggingLevel::Normal => "normal",
LoggingLevel::Debug => "debug",
};
write!(f, "{}", string)
}
}
#[doc(hidden)] #[macro_export]
macro_rules! log_ {
($name:ident: $format:expr) => { log_!($name: $format,) };
($name:ident: $format:expr, $($args:expr),*) => {
$name!(target: "_", $format, $($args),*);
};
}
#[doc(hidden)] #[macro_export]
macro_rules! error_ { ($($args:expr),+) => { log_!(error: $($args),+); }; }
#[doc(hidden)] #[macro_export]
macro_rules! info_ { ($($args:expr),+) => { log_!(info: $($args),+); }; }
#[doc(hidden)] #[macro_export]
macro_rules! trace_ { ($($args:expr),+) => { log_!(trace: $($args),+); }; }
#[doc(hidden)] #[macro_export]
macro_rules! debug_ { ($($args:expr),+) => { log_!(debug: $($args),+); }; }
#[doc(hidden)] #[macro_export]
macro_rules! warn_ { ($($args:expr),+) => { log_!(warn: $($args),+); }; }
impl Log for RocketLogger {
fn enabled(&self, md: &LogMetadata) -> bool {
md.level() <= self.0.max_log_level()
}
fn log(&self, record: &LogRecord) {
if !self.enabled(record.metadata()) {
return;
}
let from_hyper = record.location().module_path().starts_with("hyper::");
if from_hyper && self.0 != LoggingLevel::Debug {
return;
}
if record.target() == "_" && self.0 != LoggingLevel::Critical {
print!(" {} ", White.paint("=>"));
}
use log::LogLevel::*;
match record.level() {
Info => println!("{}", Blue.paint(record.args())),
Trace => println!("{}", Magenta.paint(record.args())),
Error => {
println!("{} {}",
Red.bold().paint("Error:"),
Red.paint(record.args()))
}
Warn => {
println!("{} {}",
Yellow.bold().paint("Warning:"),
Yellow.paint(record.args()))
}
Debug => {
let loc = record.location();
print!("\n{} ", Blue.bold().paint("-->"));
println!("{}:{}", Blue.paint(loc.file()), Blue.paint(loc.line()));
println!("{}", record.args());
}
}
}
}
#[doc(hidden)]
pub fn init(level: LoggingLevel) {
let result = log::set_logger(|max_log_level| {
max_log_level.set(level.max_log_level().to_log_level_filter());
Box::new(RocketLogger(level))
});
if let Err(err) = result {
println!("Logger failed to initialize: {}", err);
}
}