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Diffstat (limited to 'clap/examples/08_subcommands.rs')
| -rw-r--r-- | clap/examples/08_subcommands.rs | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/clap/examples/08_subcommands.rs b/clap/examples/08_subcommands.rs deleted file mode 100644 index 73bd098..0000000 --- a/clap/examples/08_subcommands.rs +++ /dev/null @@ -1,57 +0,0 @@ -extern crate clap; - -use clap::{App, Arg, SubCommand}; - -fn main() { - - // SubCommands function exactly like sub-Apps, because that's exactly what they are. Each - // instance of a SubCommand can have it's own version, author(s), Args, and even it's own - // subcommands. - // - // # Help and Version - // Just like Apps, each subcommand will get it's own "help" and "version" flags automatically - // generated. Also, like Apps, you can override "-V" or "-h" safely and still get "--help" and - // "--version" auto generated. - // - // NOTE: If you specify a subcommand for your App, clap will also autogenerate a "help" - // subcommand along with "-h" and "--help" (applies to sub-subcommands as well). - // - // Just like arg() and args(), subcommands can be specified one at a time via subcommand() or - // multiple ones at once with a Vec<SubCommand> provided to subcommands(). - let matches = App::new("MyApp") - // Normal App and Arg configuration goes here... - - // In the following example assume we wanted an application which - // supported an "add" subcommand, this "add" subcommand also took - // one positional argument of a file to add: - .subcommand(SubCommand::with_name("add") // The name we call argument with - .about("Adds files to myapp") // The message displayed in "myapp -h" - // or "myapp help" - .version("0.1") // Subcommands can have independent version - .author("Kevin K.") // And authors - .arg(Arg::with_name("input") // And their own arguments - .help("the file to add") - .index(1) - .required(true))) - .get_matches(); - - // You can check if a subcommand was used like normal - if matches.is_present("add") { - println!("'myapp add' was run."); - } - - // You can get the independent subcommand matches (which function exactly like App matches) - if let Some(matches) = matches.subcommand_matches("add") { - // Safe to use unwrap() because of the required() option - println!("Adding file: {}", matches.value_of("input").unwrap()); - } - - // You can also match on a subcommand's name - match matches.subcommand_name() { - Some("add") => println!("'myapp add' was used"), - None => println!("No subcommand was used"), - _ => println!("Some other subcommand was used"), - } - - // Continued program logic goes here... -} |