mirror of
https://github.com/clap-rs/clap
synced 2024-12-16 07:42:32 +00:00
27 lines
No EOL
551 B
Rust
27 lines
No EOL
551 B
Rust
#[macro_use]
|
|
extern crate clap;
|
|
#[macro_use]
|
|
extern crate clap_derive;
|
|
|
|
use clap::{App, Arg};
|
|
|
|
#[derive(ArgEnum, Debug)]
|
|
enum ArgChoice {
|
|
Foo,
|
|
Bar,
|
|
Baz,
|
|
}
|
|
|
|
fn main() {
|
|
let matches = App::new(env!("CARGO_PKG_NAME"))
|
|
.arg(Arg::with_name("arg")
|
|
.required(true)
|
|
.takes_value(true)
|
|
.possible_values(&ArgChoice::variants())
|
|
).get_matches();
|
|
|
|
let t = value_t!(matches.value_of("arg"), ArgChoice)
|
|
.unwrap_or_else(|e| e.exit());
|
|
|
|
println!("{:?}", t);
|
|
} |