walkman_tools/src/main.rs

use clap::{Arg};
use clap_nested::{Commander};

mod command;
mod lib;

const VERSION: Option<&'static str> = option_env!("CARGO_PKG_VERSION");

fn main() {
    match Commander::new()
        .options(|app| {
            app.name("Walkman Tools")
            .version(VERSION.unwrap_or("UNKNOWN"))
            .author("Drew Short <warrick@sothr.com>")
            .about("Management tool for walkman mp3 players")
            .arg(
                Arg::with_name("verbose")
                    .short("v")
                    .long("verbose")
                    .global(true)
                    .takes_value(true)
                    .value_name("VERBOSITY")
                    .help("Sets the logging verbosity, defaults to \"INFO\""),
            )
            .arg(
                Arg::with_name("dry-run")
                    .long("dry-run")
                    .global(true)
                    .takes_value(false)
                    .help("Make no changes and print expected output")
            )
        })
        .args(|_args, matches| matches.value_of("verbose").unwrap_or("INFO"))
        .add_cmd(command::dedupe::get_command())
        .no_cmd(|_args, _matches| {
            println!("No subcommand matched");
            Ok(())
        })
        .run() {
        Ok(_) => std::process::exit(0),
        Err(err) => println!("{}", err)
    }
}