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