#log-messages #logging #message #back-end #formatter #standard #debugging

colog

The colog library is a simple formatter backend for the standard rust logging system (in the log crate)

7 releases (4 stable)

1.3.0 Mar 23, 2024
1.2.0 Mar 4, 2023
1.1.0 Sep 13, 2021
1.0.0 Feb 12, 2020
0.1.1 Apr 26, 2017

#106 in Command-line interface

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1,045 downloads per month
Used in 7 crates

LGPL-3.0

27KB
96 lines

Simple colored logger for rust

The colog library is a simple formatter backend for the standard rust logging system (in the log crate).

Getting started

use log::{error, warn, info, debug, trace};

fn main() {
    // Quick start: use default initialization
    colog::init();

    error!("error message");
    error!("error with fmt: {}", 42);
    warn!("warn message");
    info!("info message");
    debug!("debug message");
    trace!("trace message");

    info!("multi line demonstration\nhere");
    info!("more\nmulti\nline\nhere\nhere");
}

This results in the following terminal output:

demo screenshot from terminal

Custom styling

It's possible to override all colors and styles of colog.

See the following examples:

Also be sure to read the documentation (cargo doc --open) for a detailed description.

Known issues and improvements

There are no known, serious, unsolved issues.

Patches welcome :)

License

This project is licensed under the LGPLv3. See the file LICENSE for details.

Dependencies

~0.3–9.5MB
~56K SLoC