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...
+}