Example of parsing some nested json from a file using a command line argument in Rust

jsontest.rs

extern crate rustc_serialize;

use rustc_serialize::json::Json;
use std::fs::File;
use std::io::Read;
use std::env;

fn main() {
    let args: Vec<String> = env::args().collect();
    println!("I got {:?} arguments: {:?}.", args.len() - 1, &args[1..]);

    if args[0].is_empty() {
        std::process::exit(1);
    }

    let mut file = File::open(&args[1]).unwrap();
    let mut data = String::new();
    file.read_to_string(&mut data).unwrap();

    let json = Json::from_str(&data).unwrap();
    // println!("{}", Json::pretty(&json));

    println!("{}", json.find_path(&["basics", "name"]).unwrap());
}