vendor/clap/examples/tutorial_builder/03_04_subcommands.rs

   1 // Note: this requires the `cargo` feature
   2
   3 use clap::{arg, command, Command};
   4
   5 fn main() {
   6     let matches = command!()
   7         .propagate_version(true)
   8         .subcommand_required(true)
   9         .arg_required_else_help(true)
  10         .subcommand(
  11             Command::new("add")
  12                 .about("Adds files to myapp")
  13                 .arg(arg!([NAME])),
  14         )
  15         .get_matches();
  16
  17     match matches.subcommand() {
  18         Some(("add", sub_matches)) => println!(
  19             "'myapp add' was used, name is: {:?}",
  20             sub_matches.get_one::<String>("NAME")
  21         ),
  22         _ => unreachable!("Exhausted list of subcommands and subcommand_required prevents `None`"),
  23     }
  24 }