src/vendor/docopt/examples/cargo.rs

   1 extern crate rustc_serialize;
   2 extern crate docopt;
   3
   4 use docopt::Docopt;
   5
   6 // Write the Docopt usage string.
   7 const USAGE: &'static str = "
   8 Rust's package manager
   9
  10 Usage:
  11     cargo <command> [<args>...]
  12     cargo [options]
  13
  14 Options:
  15     -h, --help       Display this message
  16     -V, --version    Print version info and exit
  17     --list           List installed commands
  18     -v, --verbose    Use verbose output
  19
  20 Some common cargo commands are:
  21     build       Compile the current project
  22     clean       Remove the target directory
  23     doc         Build this project's and its dependencies' documentation
  24     new         Create a new cargo project
  25     run         Build and execute src/main.rs
  26     test        Run the tests
  27     bench       Run the benchmarks
  28     update      Update dependencies listed in Cargo.lock
  29
  30 See 'cargo help <command>' for more information on a specific command.
  31 ";
  32
  33 #[derive(Debug, RustcDecodable)]
  34 struct Args {
  35     arg_command: Option<Command>,
  36     arg_args: Vec<String>,
  37     flag_list: bool,
  38     flag_verbose: bool,
  39 }
  40
  41 #[derive(Debug, RustcDecodable)]
  42 enum Command {
  43     Build, Clean, Doc, New, Run, Test, Bench, Update,
  44 }
  45
  46 fn main() {
  47     let args: Args = Docopt::new(USAGE)
  48                             .and_then(|d| d.options_first(true).decode())
  49                             .unwrap_or_else(|e| e.exit());
  50     println!("{:?}", args);
  51 }