117 lines
3.2 KiB
Rust
117 lines
3.2 KiB
Rust
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use std::sync::Mutex;
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use std::io::{self,Write};
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use crate::Result;
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lazy_static! {
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static ref LOGGER: Mutex<Logger> = Mutex::new(Logger::new());
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}
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#[macro_export]
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macro_rules! debug {
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($e:expr) => { $crate::Logger::log($crate::LogLevel::Debug, String::from($e)) };
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($fmt:expr, $($arg:tt)+) => { $crate::Logger::log($crate::LogLevel::Debug, format!($fmt, $($arg)+)) };
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}
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#[macro_export]
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macro_rules! verbose {
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($e:expr) => { $crate::Logger::log($crate::LogLevel::Verbose, String::from($e)) };
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($fmt:expr, $($arg:tt)+) => { $crate::Logger::log($crate::LogLevel::Verbose, format!($fmt, $($arg)+)) };
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}
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#[macro_export]
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macro_rules! info {
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($e:expr) => { $crate::Logger::log($crate::LogLevel::Info, String::from($e)) };
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($fmt:expr, $($arg:tt)+) => { $crate::Logger::log($crate::LogLevel::Info, format!($fmt, $($arg)+)) };
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}
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#[macro_export]
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macro_rules! notify {
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($e:expr) => { $crate::Logger::log($crate::LogLevel::Notice, String::from($e)) };
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($fmt:expr, $($arg:tt)+) => { $crate::Logger::log($crate::LogLevel::Notice, format!($fmt, $($arg)+)) };
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}
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#[macro_export]
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macro_rules! warn {
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($e:expr) => { $crate::Logger::log($crate::LogLevel::Warn, String::from($e)) };
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($fmt:expr, $($arg:tt)+) => { $crate::Logger::log($crate::LogLevel::Warn, format!($fmt, $($arg)+)) };
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}
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#[derive(PartialOrd,PartialEq,Copy,Clone)]
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pub enum LogLevel {
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Warn,
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Notice,
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Info,
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Verbose,
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Debug,
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}
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pub trait LogOutput: Send {
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fn log_output(&mut self, level: LogLevel, line: &str) -> Result<()>;
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}
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pub struct Logger {
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level: LogLevel,
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output: Box<LogOutput>,
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}
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impl Logger {
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pub fn set_log_level(level: LogLevel) {
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let mut logger = LOGGER.lock().unwrap();
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logger.level = level;
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}
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pub fn set_log_output(output: Box<LogOutput>) {
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let mut logger = LOGGER.lock().unwrap();
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logger.output = output;
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}
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pub fn log(level: LogLevel, message: impl AsRef<str>) {
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let mut logger = LOGGER.lock().unwrap();
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logger.log_message(level, message.as_ref());
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}
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fn new() -> Logger {
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Logger { level: LogLevel::Notice, output: Box::new(DefaultLogOutput) }
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}
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fn log_message(&mut self, level: LogLevel, message: &str) {
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if self.level >= level {
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if let Err(err) = self.output.log_output(level, message) {
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eprintln!("Error writing logline: {}", err);
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}
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}
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}
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pub fn format_logline(level: LogLevel, line: &str) -> String {
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let prefix = match level {
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LogLevel::Debug => "[.]",
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LogLevel::Verbose => "[-]",
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LogLevel::Info => "[+]",
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LogLevel::Notice => "[*]",
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LogLevel::Warn => "[Warning]",
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};
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format!("{} {}\n", prefix, line)
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}
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}
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#[derive(Clone)]
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pub struct DefaultLogOutput;
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impl DefaultLogOutput {
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pub fn new() -> Self { DefaultLogOutput }
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}
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impl LogOutput for DefaultLogOutput {
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fn log_output(&mut self, level: LogLevel, line: &str) -> Result<()> {
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let line = Logger::format_logline(level, line);
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let stdout = io::stdout();
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let mut lock = stdout.lock();
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lock.write_all(line.as_bytes())?;
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lock.flush()?;
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Ok(())
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}
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}
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