directorytree.java

linux下建立JAVA虚拟机的源码KAFFE

/* gnu.classpath.tools.gjdoc.DirectoryTree
   Copyright (C) 2001 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
 
GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */

package gnu.classpath.tools.gjdoc;

import java.io.*;

public class DirectoryTree {

   class FileNode {
      File file;
      FileNode[] subNodes;

      FileNode(File file) {
	 this.file=file;
	 if (file.isDirectory()) {
	    File[] subFiles=file.listFiles();
	    subNodes=new FileNode[subFiles.length];
	    for (int i=0; i<subFiles.length; ++i) {
	       subNodes[i]=new FileNode(subFiles[i]);
	    }
	 }
      }
   }

   FileNode root;

   DirectoryTree(File path) {

      System.err.print("Scanning "+path.getAbsolutePath()+"... ");

      long now1=System.currentTimeMillis();

      root=new FileNode(path);

      long now2=System.currentTimeMillis();

      System.err.println("took "+(now2-now1)+" ms");
   }
}