check out dir

src/main.rs

@@ -245,8 +245,7 @@ fn process_files(files: &&[PathBuf]) {
 
     files.iter().for_each(|name| {
         let name_str = name.to_str().unwrap();
-        println!("{:}", name_str);
-
+        
         // parse txt file
         let file = archive.by_name(name_str).unwrap();
         let data = parse_file(file).unwrap();
@@ -282,10 +281,23 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         })
         .collect();
     drop(archive);
-
+    
+    // check output directory
+    let out_dir: PathBuf = OUTPUT_PATH.into();
+    if out_dir.is_file() {
+       return Err("output directory is file!".into());
+    }
+    else if !out_dir.exists() {
+        fs::create_dir_all(out_dir)?;
+    };
+    
+    println!("processing {} files with {} threads...", source_files.len(), rayon::current_num_threads());
+    
     // split vector and process its parts in parallel
     split_vec(&source_files, rayon::current_num_threads())
         .par_iter()
         .for_each(process_files);
+    
+    println!("done");
     Ok(())
 }