Only save first part off all archives.

src/main.rs

@@ -6,6 +6,8 @@ extern crate structopt_derive;
 extern crate unrar;
 extern crate walkdir;
 
+use std::collections::HashSet;
+
 use mime_guess::guess_mime_type;
 use unrar::archive;
 use structopt::StructOpt;
@@ -53,7 +55,15 @@ fn main() {
         .filter(is_file)
         .filter(is_archive);
 
+    let mut archives = HashSet::new();
+
     for entry in entries {
-        println!("{:?}", entry);
+        if let Some(path) = entry.path().to_str() {
+            let mut archive = archive::Archive::new(String::from(path));
+
+            archives.insert(archive.first_part());
         }
     }
+
+    println!("{:#?}", archives);
+}