From 1b6a04ca5504955c571d1c97504fb45ea0befee4 Mon Sep 17 00:00:00 2001 From: Valentin Popov Date: Mon, 8 Jan 2024 01:21:28 +0400 Subject: Initial vendor packages Signed-off-by: Valentin Popov --- vendor/clap/examples/derive_ref/augment_args.rs | 27 +++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 vendor/clap/examples/derive_ref/augment_args.rs (limited to 'vendor/clap/examples/derive_ref/augment_args.rs') diff --git a/vendor/clap/examples/derive_ref/augment_args.rs b/vendor/clap/examples/derive_ref/augment_args.rs new file mode 100644 index 0000000..39d837c --- /dev/null +++ b/vendor/clap/examples/derive_ref/augment_args.rs @@ -0,0 +1,27 @@ +use clap::{arg, Args, Command, FromArgMatches as _}; + +#[derive(Args, Debug)] +struct DerivedArgs { + #[arg(short, long)] + derived: bool, +} + +fn main() { + let cli = Command::new("CLI").arg(arg!(-b - -built).action(clap::ArgAction::SetTrue)); + // Augment built args with derived args + let cli = DerivedArgs::augment_args(cli); + + let matches = cli.get_matches(); + println!("Value of built: {:?}", matches.get_flag("built")); + println!( + "Value of derived via ArgMatches: {:?}", + matches.get_flag("derived") + ); + + // Since DerivedArgs implements FromArgMatches, we can extract it from the unstructured ArgMatches. + // This is the main benefit of using derived arguments. + let derived_matches = DerivedArgs::from_arg_matches(&matches) + .map_err(|err| err.exit()) + .unwrap(); + println!("Value of derived: {derived_matches:#?}"); +} -- cgit v1.2.3