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use chrono::Local;
use std::io::Write;
use crate::output::ansi_control::Colorize;
/// Simple env logger that prints formatted messages.
/// Usage: `env_logger::init_with(EnvLogger { show_time: true, show_level: true });`
pub struct EnvLogger {
pub show_time: bool,
pub show_level: bool,
pub level: log::Level,
}
impl log::Log for EnvLogger {
fn enabled(&self, metadata: &log::Metadata) -> bool {
metadata.level() <= log::Level::Info
}
fn log(&self, record: &log::Record) {
if !self.enabled(record.metadata()) {
return;
}
let mut buf = Vec::new();
if self.show_time {
let now = Local::now().format("%Y-%m-%d %H:%M:%S%.3f");
write!(buf, "[{}] ", now).ok();
}
if self.show_level {
let level_str = match record.level() {
log::Level::Trace => "TRACE".bright_black(),
log::Level::Debug => "DEBUG".cyan(),
log::Level::Info => "INFO".green(),
log::Level::Warn => "WARN".yellow(),
log::Level::Error => "ERROR".red(),
};
write!(buf, "{}: ", level_str.bold()).ok();
}
write!(buf, "{}", record.args()).ok();
eprintln!("{}", String::from_utf8_lossy(&buf));
}
fn flush(&self) {}
}
/// Initialize the env logger with the given configuration.
pub fn init_envlogger(config: EnvLogger) {
log::set_boxed_logger(Box::new(config))
.map(|()| log::set_max_level(log::LevelFilter::Info))
.ok();
}
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