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Diffstat (limited to 'clap/examples/01c_quick_example.rs')
| -rw-r--r-- | clap/examples/01c_quick_example.rs | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/clap/examples/01c_quick_example.rs b/clap/examples/01c_quick_example.rs deleted file mode 100644 index 071bdc0..0000000 --- a/clap/examples/01c_quick_example.rs +++ /dev/null @@ -1,75 +0,0 @@ -#[macro_use] -extern crate clap; - -fn main() { - // This example shows how to create an application with several arguments using macro builder. - // It combines the simplicity of the from_usage methods and the performance of the Builder Pattern. - // - // The example below is functionally identical to the one in 01a_quick_example.rs and 01b_quick_example.rs - // - // Create an application with 5 possible arguments (2 auto generated) and 2 subcommands (1 auto generated) - // - A config file - // + Uses "-c filename" or "--config filename" - // - An output file - // + A positional argument (i.e. "$ myapp output_filename") - // - A debug flag - // + Uses "-d" or "--debug" - // + Allows multiple occurrences of such as "-dd" (for vary levels of debugging, as an example) - // - A help flag (automatically generated by clap) - // + Uses "-h" or "--help" (Only autogenerated if you do NOT specify your own "-h" or "--help") - // - A version flag (automatically generated by clap) - // + Uses "-V" or "--version" (Only autogenerated if you do NOT specify your own "-V" or "--version") - // - A subcommand "test" (subcommands behave like their own apps, with their own arguments - // + Used by "$ myapp test" with the following arguments - // > A list flag - // = Uses "-l" (usage is "$ myapp test -l" - // > A help flag (automatically generated by clap - // = Uses "-h" or "--help" (full usage "$ myapp test -h" or "$ myapp test --help") - // > A version flag (automatically generated by clap - // = Uses "-V" or "--version" (full usage "$ myapp test -V" or "$ myapp test --version") - // - A subcommand "help" (automatically generated by clap because we specified a subcommand of our own) - // + Used by "$ myapp help" (same functionality as "-h" or "--help") - let matches = clap_app!(myapp => - (version: "1.0") - (author: "Kevin K. <kbknapp@gmail.com>") - (about: "Does awesome things") - (@arg CONFIG: -c --config +takes_value "Sets a custom config file") - (@arg INPUT: +required "Sets the input file to use") - (@arg debug: -d ... "Sets the level of debugging information") - (@subcommand test => - (about: "controls testing features") - (version: "1.3") - (author: "Someone E. <someone_else@other.com>") - (@arg verbose: -v --verbose "Print test information verbosely") - ) - ).get_matches(); - - // Calling .unwrap() is safe here because "INPUT" is required (if "INPUT" wasn't - // required we could have used an 'if let' to conditionally get the value) - println!("Using input file: {}", matches.value_of("INPUT").unwrap()); - - // Gets a value for config if supplied by user, or defaults to "default.conf" - let config = matches.value_of("CONFIG").unwrap_or("default.conf"); - println!("Value for config: {}", config); - - // Vary the output based on how many times the user used the "debug" flag - // (i.e. 'myapp -d -d -d' or 'myapp -ddd' vs 'myapp -d' - match matches.occurrences_of("debug") { - 0 => println!("Debug mode is off"), - 1 => println!("Debug mode is kind of on"), - 2 => println!("Debug mode is on"), - 3 | _ => println!("Don't be crazy"), - } - - // You can information about subcommands by requesting their matches by name - // (as below), requesting just the name used, or both at the same time - if let Some(matches) = matches.subcommand_matches("test") { - if matches.is_present("verbose") { - println!("Printing verbosely..."); - } else { - println!("Printing normally..."); - } - } - - // more program logic goes here... -} |