package exTest05_3;

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

public class Pika {
	Map<String, List> tree = new HashMap<String, List>();
	
	public void buildTree(String filename) {
		try {
			BufferedReader bf = new BufferedReader(new FileReader(new File(filename)));
			String line;			
			String curDir = "";
			
			while ((line = bf.readLine()) != null) {
				StringTokenizer st = new StringTokenizer(line, "\\");
				String lastDir = "";
				
				while (st.hasMoreTokens()) {
					String token = st.nextToken();
					
					if (st.hasMoreTokens()) { //Ordner
						if (!tree.containsKey(token)) { //Schon vorhanden?
							tree.put(token, new ArrayList());
						}
						lastDir = token;
					} else { //Datei
						tree.get(lastDir).add(token);
					}
				}
				
			}
			System.out.println(tree);
			
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	public static void main(String[] args) {
		Pika p = new Pika();
		p.buildTree("D:\\workspace\\dirExamples.txt");
	}

}



//Ausgabe: {level-1b=[ccc-01.java], level-1c=[ddd-01.mp3, bbb-01.bat], level-1a=[], level-2a=[aaa-01.java, aaa-01.txt], start=[]}