Crate clap_verbosity_flag

Expand description

Easily add a --verbose flag to CLIs using Structopt

Examples

To get --quiet and --verbose flags through your entire program, just flatten Verbosity:

#[clap(flatten)]
verbose: Verbosity,

You can then use this to configure your logger:

let cli = Cli::parse();
env_logger::Builder::new()
    .filter_level(cli.verbose.log_level_filter())
    .init();

By default, this will only report errors.

-q silences output
-v show warnings
-vv show info
-vvv show debug
-vvvv show trace

You can also customize the default logging level:

use clap_verbosity_flag::{Verbosity, InfoLevel};

/// Le CLI
#[derive(Debug, Parser)]
struct Cli {
    #[clap(flatten)]
    verbose: Verbosity<InfoLevel>,
}

Or implement LogLevel yourself for more control.

Structs

Traits

LogLevel