blob: a0fff790bc711565c254b973e6d4eb57f5b4fbea (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
// Note: this requires the `cargo` feature
use clap::{arg, command, value_parser, ArgAction};
fn main() {
let matches = command!()
.arg(arg!(eff: -f).action(ArgAction::SetTrue))
.arg(
arg!(pea: -p <PEAR>)
.required(false)
.value_parser(value_parser!(String)),
)
.arg(
// Indicates that `slop` is only accessible after `--`.
arg!(slop: [SLOP])
.multiple_values(true)
.last(true)
.value_parser(value_parser!(String)),
)
.get_matches();
// This is what will happen with `myprog -f -p=bob -- sloppy slop slop`...
// -f used: true
println!(
"-f used: {:?}",
*matches.get_one::<bool>("eff").expect("defaulted by clap")
);
// -p's value: Some("bob")
println!("-p's value: {:?}", matches.get_one::<String>("pea"));
// 'slops' values: Some(["sloppy", "slop", "slop"])
println!(
"'slops' values: {:?}",
matches
.get_many::<String>("slop")
.map(|vals| vals.collect::<Vec<_>>())
.unwrap_or_default()
);
// Continued program logic goes here...
}
|