content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one or more
   *  contributor license agreements.  See the NOTICE file distributed with
   *  this work for additional information regarding copyright ownership.
   *  The ASF licenses this file to You under the Apache License, Version 2.0
   *  (the "License"); you may not use this file except in compliance with
   *  the License.  You may obtain a copy of the License at
   *
   *      https://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *
   */
  package org.apache.tools.ant.taskdefs.optional.ejb;
  
  import java.io.File;
  import java.io.FilenameFilter;
  
  /**
   * A filename filter for inner class files of a particular class.
   */
  public class InnerClassFilenameFilter implements FilenameFilter {
      private String baseClassName;
  
      /**
       * Constructor of filter.
       * @param baseclass the class to filter inner classes on.
       */
      InnerClassFilenameFilter(String baseclass) {
          int extidx = baseclass.lastIndexOf(".class");
          if (extidx == -1) {
              extidx = baseclass.length() - 1;
          }
          baseClassName = baseclass.substring(0, extidx);
      }
  
      /**
       * Check if the file name passes the filter.
       * @param dir not used.
       * @param filename the filename to filter on.
       * @return true if the filename is an inner class of the base class.
       */
      @Override
      public boolean accept(File dir, String filename) {
          return filename.lastIndexOf('.') == filename.lastIndexOf(".class")
              && filename.indexOf(baseClassName + "$") == 0;
      }
  }
  