clap/examples/21_aliases.rs
2018-11-14 12:05:06 -05:00

41 lines
1.3 KiB
Rust

extern crate clap;
use clap::{App, Arg};
fn main() {
let matches = App::new("MyApp")
.subcommand(
App::new("ls")
.aliases(&["list", "dir"])
.about("Adds files to myapp")
.version("0.1")
.author("Kevin K.")
.arg(
Arg::with_name("input")
.help("the file to add")
.index(1)
.required(true),
),
)
.get_matches();
// You can check if a subcommand was used like normal
if matches.is_present("add") {
println!("'myapp add' was run.");
}
// You can get the independent subcommand matches (which function exactly like App matches)
if let Some(ref matches) = matches.subcommand_matches("add") {
// Safe to use unwrap() because of the required() option
println!("Adding file: {}", matches.value_of("input").unwrap());
}
// You can also match on a subcommand's name
match matches.subcommand_name() {
Some("add") => println!("'myapp add' was used"),
None => println!("No subcommand was used"),
_ => println!("Some other subcommand was used"),
}
// Continued program logic goes here...
}