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extern crate log;
use log::{LogMetadata, LogRecord, LogLevelFilter, SetLoggerError};
use std::io::Write;
use std::fs::OpenOptions;
struct Logger{
file_name: String,
}
impl Logger {
pub fn new(file_name: String) -> Logger{
return Logger {
file_name: file_name,
};
}
}
impl log::Log for Logger{
fn enabled(&self, _: &LogMetadata) -> bool {
return true;
}
fn log(&self, record: &LogRecord) {
let mut f = match OpenOptions::new().append(true).open(&self.file_name) {
Err(_) => panic!("couldn't open {}", self.file_name),
Ok(f) => f,
};
let _ = write!(f, "{} - {}", record.level(), record.args());
let _ = f.flush();
}
}
pub fn log_init(file_name: String) -> Result<(), SetLoggerError>{
return log::set_logger(|max_log_level| {
max_log_level.set(LogLevelFilter::Debug);
Box::new(Logger::new(file_name))
});
}
pub fn log_deinit(){
let _ = log::shutdown_logger();
}