Rustlang - CLI – Polyglot Programming

Rust

I am going to make the assumption that rust will be a foreign invader to your brain and feel very hard.

If you stick with rust, you will soon say its the most fun and least fun language you have ever worked in.

CLI Argument parsing

Rust has the best. Hands down.

Rust : clap
- The greatest CLI parser by the mostest

I use tmux, btw

Such fast swapping

So to get started lets create the project

Create it where you like

Before you get started

cargo add is not a default feature, instead you need to add it.

github.com/killercup/cargo-edit

Install: Cargo Edit

cargo init
cargo add clap --features=derive
vim . # you can open up other moderately slow editor of your choice

This is the rust time... it will be a bit interesting.

Project Structure

After cargo init

.git
.gitignore
src/main.rs
Cargo.toml
Cargo.lock

Change it

src/main.rs -> src/bin/projector.rs
src/lib.rs
src/opts.rs

Lets program it!

Example of the opts.rs

// src/opts.rs
use std::path::PathBuf;

use clap::Parser;

#[derive(Parser, Debug)]
#[clap()]
pub struct ProjectorOpts {

    #[clap(short = 'p', long = "pwd")]
    pub pwd: Option<PathBuf>,

    #[clap(short = 'c', long = "config")]
    pub config: Option<PathBuf>,

    #[clap(default_value = "")]
    pub operation: Vec<String>,
}

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