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https://github.com/clap-rs/clap
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befee6667b
This creates distinct tutorial examples from complex feature examples (more how-tos). Both sets are getting builder / derive versions (at least the critical ones).
24 lines
858 B
Rust
24 lines
858 B
Rust
use clap::{app_from_crate, arg};
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fn main() {
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let matches = app_from_crate!()
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.arg(arg!(eff: -f))
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.arg(arg!(pea: -p <PEAR>).required(false))
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.arg(
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arg!(slop: [SLOP]).multiple_occurrences(true).last(true), // Indicates that `slop` is only accessible after `--`.
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)
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.get_matches();
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// This is what will happen with `myprog -f -p=bob -- sloppy slop slop`...
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println!("-f used: {:?}", matches.is_present("eff")); // -f used: true
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println!("-p's value: {:?}", matches.value_of("pea")); // -p's value: Some("bob")
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println!(
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"'slops' values: {:?}",
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matches
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.values_of("slop")
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.map(|vals| vals.collect::<Vec<_>>())
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.unwrap_or_default()
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); // 'slops' values: Some(["sloppy", "slop", "slop"])
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// Continued program logic goes here...
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}
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