FileFilterByExtension


1   /***************************************************************************
2    * Copyright 2001-2003 The eXo Platform SARL         All rights reserved.  *
3    * Please look at license.txt in info directory for more license detail.   *
4    **************************************************************************/
5   package org.exoplatform.commons.utils.io;
6   
7   import java.util.HashSet  ;
8   import java.io.FileFilter  ;
9   import java.io.File  ;
10  /**
11   * @author Tuan Nguyen (tuan08@users.sourceforge.net)
12   * @since Sep 13, 2004
13   * @version $Id: FileFilterByExtension.java,v 1.2 2004/09/16 03:03:19 tuan08 Exp $
14   */
15  public class FileFilterByExtension implements FileFilter   {
16    private boolean acceptDir_ ;
17    private HashSet   knownExt_ ;
18    
19    public FileFilterByExtension(String  [] ext, boolean acceptDir) {
20      acceptDir_ = acceptDir ;
21      knownExt_ = new HashSet  () ;
22      for(int i = 0; i < ext.length; i++ ) {
23        knownExt_.add(ext[i].trim().toLowerCase()) ;
24      }
25    }
26    
27    public boolean accept(File   file) {
28      if(file.isDirectory()) {
29        if(acceptDir_) return true ;
30        return false ;
31      }
32      String   temp = file.getName() ;
33      int idx = temp.lastIndexOf(".") ;
34      if(idx > 0 ) temp = temp.substring(idx + 1, temp.length()) ;
35      else  return false ;
36      return knownExt_.contains(temp.toLowerCase()) ;
37    }
38  }
39

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