Right above our Args struct, we’ll add a clap helper: #[clap(version)].
use clap::Parser;
/// Scaffold a new post for your blog
#[derive(Parser, Debug)]
#[clap(version)]
struct Args {
/// The layout the post should use
#[clap(short, long, default_value = "post")]
layout: String,
/// Tags to include
#[clap(short, long = "tag")]
tags: Vec<String>,
/// The title of the post.
///
/// If not provided, the filename will be generated
#[clap(short = 'T', long, default_value = "A Post")]
title: String,
/// Should this post be published?
#[clap(short, long, default_value = "draft")]
status: String,
/// Where to put the file
#[clap(short, long, default_value = "content")]
output_dir: String,
}
fn main() {
let args = Args::parse();
dbg!(args);
}
This takes the version from our Cargo.toml and uses it as the --version flag in our CLI.
If we published this CLI to crates.io or homebrew or anywhere else, our CLI version information is now in sync with the information in Cargo.toml.