add default order for the result

src/main.rs

@@ -26,6 +26,13 @@ fn main() {
         let n_thread = args.get_threads_num();
         counters = walker::parallel_walk(directories, args.all_files, args.count_size, n_thread);
     }
+
+    if args.count_size {
+        counters.sort_by(|c1, c2| c2.size().cmp(&c1.size()));
+    } else {
+        counters.sort_by(|c1, c2| c2.n_files.cmp(&c1.n_files));
+    }
+
     Counter::output(&counters, args.count_size);
 }
 

src/walker.rs

@@ -26,10 +26,10 @@ pub type DirDetail = (DirList, Counter);
 
 #[derive(Debug)]
 pub struct Counter {
-    dirpath: PathBuf,
-    n_files: u64,
-    n_dirs: u64,
-    sz_map: SizeMap,
+    pub dirpath: PathBuf,
+    pub n_files: u64,
+    pub n_dirs: u64,
+    pub sz_map: SizeMap,
 }
 
 #[allow(unused)]
@@ -55,13 +55,13 @@ impl Counter {
         return (blksz * (sz / blksz).ceil()) as u64;
     }
 
-    pub fn total_size(&self) -> u64 {
+    pub fn size(&self) -> u64 {
         self.sz_map.values().sum()
     }
 
     // Make "size" more readable
     pub fn readable_size(&self) -> String {
-        let mut sz = self.total_size() as f64;
+        let mut sz = self.size() as f64;
         let mut str_sz = String::new();
 
         for unit in Self::SZ_UNIT {