You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.4 KiB
Rust
54 lines
1.4 KiB
Rust
// Using multiple positional arguments
|
|
// Detect dynamically how many positional arguments where passed and handle them
|
|
use std::path::PathBuf;
|
|
|
|
use clap::{Parser};
|
|
|
|
#[derive(Parser)]
|
|
#[command(author, version, about, long_about = None)]
|
|
struct Cli {
|
|
|
|
/// Sets a custom config file
|
|
#[arg(short, long, value_name = "FILE")]
|
|
config: Option<PathBuf>,
|
|
|
|
/// Turn debugging information on
|
|
#[arg(short, long, action = clap::ArgAction::Count)]
|
|
debug: u8,
|
|
|
|
/// CMD to execute for each column of input text. 0 < N_CMD < NB_COLUMNS
|
|
#[arg( last = true )]
|
|
commands: Vec<String>
|
|
|
|
}
|
|
|
|
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"),
|
|
3 ..= 5 => println!("too much dude !"),
|
|
_ => println!("Don't be crazy"),
|
|
}
|
|
|
|
|
|
for c in cli.commands {
|
|
println!("{:?}", c);
|
|
}
|
|
|
|
// Continued program logic goes here...
|
|
}
|