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#![cfg(feature = "standard")]
// Copyright (c) 2023 Joining7943 <joining@posteo.de>
//
// This software is released under the MIT License.
// https://opensource.org/licenses/MIT
//! Command line application with clap_derive which prints the sum of two durations if two
//! positional arguments were given or else just prints the parsed duration from the first
//! positional argument.
use clap::Parser;
use fundu::DurationParser;
#[derive(Parser)]
#[clap(author, version, about, long_about = None, allow_negative_numbers = true)]
struct Args {
#[clap(value_name = "DURATION1")]
duration_1: String,
#[clap(value_name = "DURATION2")]
duration_2: Option<String>,
}
fn main() {
let args = &Args::parse();
let parser = DurationParser::new();
match args.duration_2.as_deref() {
Some(arg2) => {
let sum = parser
.parse(&args.duration_1)
.unwrap()
.saturating_add(parser.parse(arg2).unwrap()); //
println!("The sum of the two durations: {sum:?}");
}
None => {
let duration = parser.parse(&args.duration_1).unwrap();
println!("The duration is: {duration:?}");
}
}
}
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