package algs13;
import java.io.File;
import stdlib.*;
/* ***********************************************************************
 *  Compilation:  javac Directory.java
 *  Execution:    java Directory directory-name
 *  Dependencies: Queue.java
 *
 *  Prints out all of the files in the given directory and any
 *  subdirectories in level-order by using a queue. Also prints
 *  out their file sizes in bytes.
 *
 *  % java Directory .
 *
 *************************************************************************/

public class XDirectory {

  public static void main(String[] args) {
    Queue<File> q = new Queue<>();
    File root = new File(args[0]);     // root directory
    q.enqueue(root);
    while (!q.isEmpty()) {
      File directory = q.dequeue();
      File[] files = directory.listFiles();
      for (File file : files) {
        if (file.isDirectory()) q.enqueue(file);
        else StdOut.println(file.length() + ":\t" + file);
      }
    }
  }

}