pub fn set_up_logging(enabled: bool) { use fern::colors::{Color, ColoredLevelConfig}; if !enabled { return; } // configure colors for the whole line let colors_line = ColoredLevelConfig::new() .error(Color::Red) .warn(Color::Yellow) // we actually don't need to specify the color for debug and info, they are white by default .info(Color::White) .debug(Color::White) // depending on the terminals color scheme, this is the same as the background color .trace(Color::BrightBlack); // configure colors for the name of the level. // since almost all of them are the same as the color for the whole line, we // just clone `colors_line` and overwrite our changes let colors_level = colors_line.info(Color::Green); // here we set up our fern Dispatch // when running tests in batch, the logger is re-used, so ignore the logger error let _ = fern::Dispatch::new() .format(move |out, message, record| { out.finish(format_args!( "{color_line}[{level}{color_line}] {message}\x1B[0m", color_line = format_args!( "\x1B[{}m", colors_line.get_color(&record.level()).to_fg_str() ), level = colors_level.color(record.level()), message = message, )); }) // set the default log level. to filter out verbose log messages from dependencies, set // this to Warn and overwrite the log level for your crate. .level(log::LevelFilter::Debug) // .level(log::LevelFilter::Warn) // change log levels for individual modules. Note: This looks for the record's target // field which defaults to the module path but can be overwritten with the `target` // parameter: // `info!(target="special_target", "This log message is about special_target");` // .level_for("dioxus", log::LevelFilter::Debug) // .level_for("dioxus", log::LevelFilter::Info) // .level_for("pretty_colored", log::LevelFilter::Trace) // output to stdout .chain(std::io::stdout()) .apply(); }