s0-meter/src/main.rs

#[macro_use]
extern crate clap;

mod cfg_reader;
mod pulse_counter;

const APP_VERSION: &'static str = env!("CARGO_PKG_VERSION");
const DEFAULT_CONFIG_FILE_NAME: &str = "/etc/s0_logger.cfg";

fn main() {
    let cli_args = clap_app!(s0_meter =>
        (version: APP_VERSION)
        (author: "Harald Kube <harald.kube@gmx.de")
        (about: "Listen for S0 pulses at the given GPIO pins")
        (@arg v: -v ... "Set the verbosity level (up to -vvv)")
        (@arg config: -c --config +takes_value "The name of the config file (default: /etc/s0_logger.cfg)")
    ).get_matches();

    let log_level = cli_args.occurrences_of("v");
    match log_level {
        0 => println!("No logging"),
        1 => println!("A little logging"),
        2 => println!("A little more logging"),
        _ => println!("A lot logging"),
    };

    let config_file_name = cli_args
        .value_of("config")
        .unwrap_or(DEFAULT_CONFIG_FILE_NAME);
    println!("Read the config from file '{}'", config_file_name);

}