use rust_car::{
reader::{self, CarReader},
utils::cat_ipld,
};
fn main() {
let file_name = std::env::args().nth(1).expect("use filename as argument");
let file = std::path::Path::new("test");
let file = file.join("carv1-basic.car");
let file = std::fs::File::open(file).unwrap();
let mut reader = reader::new_v1(file).unwrap();
let cid = reader
.search_file_cid(&file_name)
.expect("search file error.");
cat_ipld(&mut reader, cid).unwrap();
}