Recursively check paths, not only the parent of files

Cargo.lock

@@ -1,3 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
 [[package]]
 name = "aho-corasick"
 version = "0.7.6"

src/main.rs

@@ -60,7 +60,11 @@ fn main() {
                 if filename.ends_with("/") {
                     files_dirs.insert(filename.clone());
                 } else {
-                    directory_files.insert(Path::new(filename).parent().unwrap().to_str().unwrap().to_string() + "/");
+                    let mut path = Path::new(filename);
+                    while path.parent().is_some() {
+                    	directory_files.insert(path.parent().unwrap().to_str().unwrap().to_string() + "/");
+                    	path = path.parent().unwrap();
+                    }
                 }
             });
     }