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//! A somewhat comprehensive example of a typical `StructOpt` usage.use
//!
//! Running this example with --help prints this message:
//! -----------------------------------------------------
//! basic 0.3.25
//! A basic example
//!
//! USAGE:
//! basic [FLAGS] [OPTIONS] --output <output> [--] [FILE]...
//!
//! FLAGS:
//! -d, --debug Activate debug mode
//! -h, --help Prints help information
//! -V, --version Prints version information
//! -v, --verbose Verbose mode (-v, -vv, -vvv, etc.)
//!
//! OPTIONS:
//! -l, --level <level>... admin_level to consider
//! -c, --nb-cars <nb-cars> Number of cars
//! -o, --output <output> Output file
//! -s, --speed <speed> Set speed [default: 42]
//!
//! ARGS:
//! <FILE>... Files to process
//! -----------------------------------------------------
use std::path::PathBuf;
use structopt::StructOpt;
/// A basic example
#[derive(StructOpt, Debug)]
#[structopt(name = "basic")]
struct Opt {
// A flag, true if used in the command line. Note doc comment will
// be used for the help message of the flag. The name of the
// argument will be, by default, based on the name of the field.
/// Activate debug mode
#[structopt(short, long)]
debug: bool,
// The number of occurrences of the `v/verbose` flag
/// Verbose mode (-v, -vv, -vvv, etc.)
#[structopt(short, long, parse(from_occurrences))]
verbose: u8,
/// Set speed
#[structopt(short, long, default_value = "42")]
speed: f64,
/// Output file
#[structopt(short, long, parse(from_os_str))]
output: PathBuf,
// the long option will be translated by default to kebab case,
// i.e. `--nb-cars`.
/// Number of cars
#[structopt(short = "c", long)]
nb_cars: Option<i32>,
/// admin_level to consider
#[structopt(short, long)]
level: Vec<String>,
/// Files to process
#[structopt(name = "FILE", parse(from_os_str))]
files: Vec<PathBuf>,
}
fn main() {
let opt = Opt::from_args();
println!("{:#?}", opt);
}
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