/
logging.rs
247 lines (221 loc) · 7.1 KB
/
logging.rs
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use crate::config::{TargetPadding, TimeFormat};
use crate::{Config, LevelPadding, ThreadLogMode, ThreadPadding};
use log::{LevelFilter, Record};
use std::io::{Error, Write};
use std::thread;
#[cfg(all(feature = "termcolor", feature = "ansi_term"))]
use termcolor::Color;
#[cfg(all(feature = "termcolor", feature = "ansi_term"))]
pub fn termcolor_to_ansiterm(color: &Color) -> Option<ansi_term::Color> {
match color {
Color::Black => Some(ansi_term::Color::Black),
Color::Red => Some(ansi_term::Color::Red),
Color::Green => Some(ansi_term::Color::Green),
Color::Yellow => Some(ansi_term::Color::Yellow),
Color::Blue => Some(ansi_term::Color::Blue),
Color::Magenta => Some(ansi_term::Color::Purple),
Color::Cyan => Some(ansi_term::Color::Cyan),
Color::White => Some(ansi_term::Color::White),
_ => None,
}
}
#[inline(always)]
pub fn try_log<W>(config: &Config, record: &Record<'_>, write: &mut W) -> Result<(), Error>
where
W: Write + Sized,
{
if should_skip(config, record) {
return Ok(());
}
if config.time <= record.level() && config.time != LevelFilter::Off {
write_time(write, config)?;
}
if config.level <= record.level() && config.level != LevelFilter::Off {
write_level(record, write, config)?;
}
if config.thread <= record.level() && config.thread != LevelFilter::Off {
match config.thread_log_mode {
ThreadLogMode::IDs => {
write_thread_id(write, config)?;
}
ThreadLogMode::Names | ThreadLogMode::Both => {
write_thread_name(write, config)?;
}
}
}
if config.target <= record.level() && config.target != LevelFilter::Off {
write_target(record, write, config)?;
}
if config.location <= record.level() && config.location != LevelFilter::Off {
write_location(record, write)?;
}
write_args(record, write)
}
#[inline(always)]
pub fn write_time<W>(write: &mut W, config: &Config) -> Result<(), Error>
where
W: Write + Sized,
{
use time::error::Format;
use time::format_description::well_known::*;
let time = time::OffsetDateTime::now_utc().to_offset(config.time_offset);
let res = match config.time_format {
TimeFormat::Rfc2822 => time.format_into(write, &Rfc2822),
TimeFormat::Rfc3339 => time.format_into(write, &Rfc3339),
TimeFormat::Custom(format) => time.format_into(write, &format),
};
match res {
Err(Format::StdIo(err)) => return Err(err),
Err(err) => panic!("Invalid time format: {}", err),
_ => {}
};
write!(write, " ")?;
Ok(())
}
#[inline(always)]
pub fn write_level<W>(record: &Record<'_>, write: &mut W, config: &Config) -> Result<(), Error>
where
W: Write + Sized,
{
#[cfg(all(feature = "termcolor", feature = "ansi_term"))]
let color = match &config.level_color[record.level() as usize] {
Some(termcolor) => {
if config.write_log_enable_colors {
termcolor_to_ansiterm(termcolor)
} else {
None
}
}
None => None,
};
let level = match config.level_padding {
LevelPadding::Left => format!("[{: >5}]", record.level()),
LevelPadding::Right => format!("[{: <5}]", record.level()),
LevelPadding::Off => format!("[{}]", record.level()),
};
#[cfg(all(feature = "termcolor", feature = "ansi_term"))]
match color {
Some(c) => write!(write, "{} ", c.paint(level))?,
None => write!(write, "{} ", level)?,
};
#[cfg(not(feature = "ansi_term"))]
write!(write, "{} ", level)?;
Ok(())
}
#[inline(always)]
pub fn write_target<W>(record: &Record<'_>, write: &mut W, config: &Config) -> Result<(), Error>
where
W: Write + Sized,
{
// dbg!(&config.target_padding);
match config.target_padding {
TargetPadding::Left(pad) => {
write!(
write,
"{target:>pad$}: ",
pad = pad,
target = record.target()
)?;
}
TargetPadding::Right(pad) => {
write!(
write,
"{target:<pad$}: ",
pad = pad,
target = record.target()
)?;
}
TargetPadding::Off => {
write!(write, "{}: ", record.target())?;
}
}
Ok(())
}
#[inline(always)]
pub fn write_location<W>(record: &Record<'_>, write: &mut W) -> Result<(), Error>
where
W: Write + Sized,
{
let file = record.file().unwrap_or("<unknown>");
if let Some(line) = record.line() {
write!(write, "[{}:{}] ", file, line)?;
} else {
write!(write, "[{}:<unknown>] ", file)?;
}
Ok(())
}
pub fn write_thread_name<W>(write: &mut W, config: &Config) -> Result<(), Error>
where
W: Write + Sized,
{
if let Some(name) = thread::current().name() {
match config.thread_padding {
ThreadPadding::Left { 0: qty } => {
write!(write, "({name:>0$}) ", qty, name = name)?;
}
ThreadPadding::Right { 0: qty } => {
write!(write, "({name:<0$}) ", qty, name = name)?;
}
ThreadPadding::Off => {
write!(write, "({}) ", name)?;
}
}
} else if config.thread_log_mode == ThreadLogMode::Both {
write_thread_id(write, config)?;
}
Ok(())
}
pub fn write_thread_id<W>(write: &mut W, config: &Config) -> Result<(), Error>
where
W: Write + Sized,
{
let id = format!("{:?}", thread::current().id());
let id = id.replace("ThreadId(", "");
let id = id.replace(")", "");
match config.thread_padding {
ThreadPadding::Left { 0: qty } => {
write!(write, "({id:>0$}) ", qty, id = id)?;
}
ThreadPadding::Right { 0: qty } => {
write!(write, "({id:<0$}) ", qty, id = id)?;
}
ThreadPadding::Off => {
write!(write, "({}) ", id)?;
}
}
Ok(())
}
#[inline(always)]
pub fn write_args<W>(record: &Record<'_>, write: &mut W) -> Result<(), Error>
where
W: Write + Sized,
{
writeln!(write, "{}", record.args())?;
Ok(())
}
#[inline(always)]
pub fn should_skip(config: &Config, record: &Record<'_>) -> bool {
// If a module path and allowed list are available
match (record.target(), &*config.filter_allow) {
(path, allowed) if !allowed.is_empty() => {
// Check that the module path matches at least one allow filter
if !allowed.iter().any(|v| path.starts_with(&**v)) {
// If not, skip any further writing
return true;
}
}
_ => {}
}
// If a module path and ignore list are available
match (record.target(), &*config.filter_ignore) {
(path, ignore) if !ignore.is_empty() => {
// Check that the module path does not match any ignore filters
if ignore.iter().any(|v| path.starts_with(&**v)) {
// If not, skip any further writing
return true;
}
}
_ => {}
}
false
}