// CSE 143, Autumn 2013
// Prints contents of directories using indentation to indicate 
// nesting.  Example:
//   lol cats
//      cs
//         hex.jpeg
//         recursive.jpeg
//      sandwich.jpeg

import java.io.*;
import java.util.*;

public class Crawler {
	public static void main(String[] args) {
		Scanner console = new Scanner(System.in);
		System.out.print("directory or file name? ");
		String name = console.nextLine();
		File f = new File(name);
		if (!f.exists()) {
			System.out.println("That file or directory does not exist");
		} else {
			print(f);
		}
	}

	// Prints the given file or directory and any files or directories
	// inside it, starting with 0 indentation.
	public static void print(File f) {
		print(f, "");
	}
	
	private static void print(File f, String spaces) {
		System.out.println(spaces + f.getName());
		if(f.isDirectory()) {
			// get all of the files in this file
			File [] contents = f.listFiles();
			for(int i = 0; i < contents.length; i++) {
				print(contents[i], spaces + "    ");
			}
			// if they are directories get all their files
		}
	}
}