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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:11:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:12:43 +0000 |
commit | cf94bdc0742c13e2a0cac864c478b8626b266e1b (patch) | |
tree | 044670aa50cc5e2b4229aa0b6b3df6676730c0a6 /vendor/clap-3.2.20/examples/tutorial_derive/01_quick.rs | |
parent | Adding debian version 1.65.0+dfsg1-2. (diff) | |
download | rustc-cf94bdc0742c13e2a0cac864c478b8626b266e1b.tar.xz rustc-cf94bdc0742c13e2a0cac864c478b8626b266e1b.zip |
Merging upstream version 1.66.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/clap-3.2.20/examples/tutorial_derive/01_quick.rs')
-rw-r--r-- | vendor/clap-3.2.20/examples/tutorial_derive/01_quick.rs | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/vendor/clap-3.2.20/examples/tutorial_derive/01_quick.rs b/vendor/clap-3.2.20/examples/tutorial_derive/01_quick.rs new file mode 100644 index 000000000..2c2031061 --- /dev/null +++ b/vendor/clap-3.2.20/examples/tutorial_derive/01_quick.rs @@ -0,0 +1,69 @@ +use std::path::PathBuf; + +use clap::{Parser, Subcommand}; + +#[derive(Parser)] +#[clap(author, version, about, long_about = None)] +struct Cli { + /// Optional name to operate on + #[clap(value_parser)] + name: Option<String>, + + /// Sets a custom config file + #[clap(short, long, value_parser, value_name = "FILE")] + config: Option<PathBuf>, + + /// Turn debugging information on + #[clap(short, long, action = clap::ArgAction::Count)] + debug: u8, + + #[clap(subcommand)] + command: Option<Commands>, +} + +#[derive(Subcommand)] +enum Commands { + /// does testing things + Test { + /// lists test values + #[clap(short, long, action)] + list: bool, + }, +} + +fn main() { + let cli = Cli::parse(); + + // You can check the value provided by positional arguments, or option arguments + if let Some(name) = cli.name.as_deref() { + println!("Value for name: {}", name); + } + + if let Some(config_path) = cli.config.as_deref() { + println!("Value for config: {}", config_path.display()); + } + + // You can see how many times a particular flag or argument occurred + // Note, only flags can have multiple occurrences + match cli.debug { + 0 => println!("Debug mode is off"), + 1 => println!("Debug mode is kind of on"), + 2 => println!("Debug mode is on"), + _ => println!("Don't be crazy"), + } + + // You can check for the existence of subcommands, and if found use their + // matches just as you would the top level cmd + match &cli.command { + Some(Commands::Test { list }) => { + if *list { + println!("Printing testing lists..."); + } else { + println!("Not printing testing lists..."); + } + } + None => {} + } + + // Continued program logic goes here... +} |