25327fa441
There was a lot of stuff added here. The most important addition is how Pirate now returns a MissingArgument kinded error if a required program argument isn't passed to the program.
50 lines
1.1 KiB
Rust
50 lines
1.1 KiB
Rust
extern crate pirate;
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use std::env;
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use pirate::Matches;
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fn main() {
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let opts = &["n:", "b/boop", ":input"];
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let matches: Matches = match pirate::parse(env::args(), opts) {
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Err(ref e) => {
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println!("Error: {}", e);
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help();
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return;
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},
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Ok(m) => m
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};
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// Print the program help if necessary
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if matches.has_arg("h") || matches.has_arg("help") {
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help();
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return;
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}
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let input = matches.get("input").unwrap().parse::<i32>().unwrap();
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let num = match matches.get("n") {
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Some(n) => n.parse::<i32>().unwrap(),
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None => 1
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};
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let sum = input + num;
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println!("{} + {} = {}", input, num, sum);
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if matches.has_arg("b") || matches.has_arg("boop") {
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println!("Boop!!");
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}
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}
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fn help() {
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println!("usage: pirate-test [-n NUM] [-b|--boop] INPUT\n");
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println!("Options:");
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println!(" -n NUM\tChange the default number that's added to the input");
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println!(" -b, --boop\tIt's a surprise!");
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println!("\nRequired arguments:");
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println!(" INPUT\tWe're gonna manipulate this somehow, you'll see!");
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}
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