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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use std::io;
use std::io::Write;
use log::*;
pub struct TraceLogger;
pub struct WarnLogger;
pub struct InfoLogger;
pub struct ErrorLogger;
impl TraceLogger {
pub fn init() -> Result<(), SetLoggerError> {
log::set_logger(&TraceLogger)?;
log::set_max_level(LevelFilter::Trace);
Ok(())
}
}
impl log::Log for TraceLogger {
fn enabled(&self, metadata: &Metadata) -> bool {
metadata.level() <= Level::Trace
}
fn log(&self, record: &Record) {
if self.enabled(record.metadata()) {
eprintln!("{}: {}", record.level(), record.args());
}
}
fn flush(&self) {
io::stderr().flush().unwrap();
}
}
impl WarnLogger {
pub fn init() -> Result<(), SetLoggerError> {
log::set_logger(&WarnLogger)?;
log::set_max_level(LevelFilter::Warn);
Ok(())
}
}
impl log::Log for WarnLogger {
fn enabled(&self, metadata: &Metadata) -> bool {
metadata.level() <= Level::Warn
}
fn log(&self, record: &Record) {
if self.enabled(record.metadata()) {
eprintln!("{}: {}", record.level(), record.args());
}
}
fn flush(&self) {
io::stderr().flush().unwrap();
}
}
impl ErrorLogger {
pub fn init() -> Result<(), SetLoggerError> {
log::set_logger(&ErrorLogger)?;
log::set_max_level(LevelFilter::Error);
Ok(())
}
}
impl log::Log for ErrorLogger {
fn enabled(&self, metadata: &Metadata) -> bool {
metadata.level() <= Level::Error
}
fn log(&self, record: &Record) {
if self.enabled(record.metadata()) {
eprintln!("{}: {}", record.level(), record.args());
}
}
fn flush(&self) {
io::stderr().flush().unwrap();
}
}
impl InfoLogger {
pub fn init() -> Result<(), SetLoggerError> {
log::set_logger(&InfoLogger)?;
log::set_max_level(LevelFilter::Info);
Ok(())
}
}
impl log::Log for InfoLogger {
fn enabled(&self, metadata: &Metadata) -> bool {
metadata.level() <= Level::Info
}
fn log(&self, record: &Record) {
if self.enabled(record.metadata()) {
eprintln!("{}: {}", record.level(), record.args());
}
}
fn flush(&self) {
io::stderr().flush().unwrap();
}
}
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