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//! Running this example with --help prints this message:
//! -----------------------------------------------------
//! structopt 0.3.25
//!
//! USAGE:
//! enum_in_args_with_strum [OPTIONS]
//!
//! FLAGS:
//! -h, --help Prints help information
//! -V, --version Prints version information
//!
//! OPTIONS:
//! --format <format> [default: txt] [possible values: txt, md, html]
//! -----------------------------------------------------
use structopt::StructOpt;
use strum::{EnumString, EnumVariantNames, VariantNames};
const DEFAULT: &str = "txt";
#[derive(StructOpt, Debug)]
struct Opt {
#[structopt(
long,
possible_values = Format::VARIANTS,
case_insensitive = true,
default_value = DEFAULT,
)]
format: Format,
}
#[derive(EnumString, EnumVariantNames, Debug)]
#[strum(serialize_all = "kebab_case")]
enum Format {
Txt,
Md,
Html,
}
fn main() {
println!("{:?}", Opt::from_args());
}
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