extern crate debpkg;

use std::env;
use std::fs::File;
use std::path::Path;
use std::process;

fn main() {
    let args: Vec<String> = env::args().collect();
    if args.len() != 2 {
        println!("usage: pkglist <path>");
        process::exit(1);
    }

    let deb_path = Path::new(&args[1]);

    if !deb_path.exists() {
        println!("\"{}\" does not exist", deb_path.display());
        process::exit(1);
    }

    let deb_file = match File::open(deb_path) {
        Ok(file) => file,
        Err(e) => {
            println!(
                "ERROR: Failed to open debian file \"{}\"",
                deb_path.display()
            );
            println!("       {}", e);
            process::exit(1);
        }
    };

    let mut pkg = match debpkg::DebPkg::parse(deb_file) {
        Ok(pkg) => pkg,
        Err(e) => {
            println!(
                "ERROR: Failed to parse debian file \"{}\"",
                deb_path.display()
            );
            println!("       {}", e);
            process::exit(1);
        }
    };

    let mut data = pkg.data().unwrap();
    let entries = data.entries().unwrap();
    let files: Vec<std::path::PathBuf> = entries
        .map(|e| e.unwrap().path().unwrap().into_owned())
        .collect();

    for file in files {
        println!("{}", file.display());
    }
}