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.types.selectors;
  
  import java.io.File;
  
  import org.apache.tools.ant.types.EnumeratedAttribute;
  import org.apache.tools.ant.types.Parameter;
  
  /**
   * Selector that selects a certain kind of file: directory or regular.
   *
   * @since 1.6
   */
  public class TypeSelector extends BaseExtendSelector {
  
      /** Key to used for parameterized custom selector */
      public static final String TYPE_KEY = "type";
  
      private String type = null;
  
      /**
       * @return a string describing this object
       */
      public String toString() {
          return "{typeselector type: " + type + "}";
      }
  
      /**
       * Set the type of file to require.
       * @param fileTypes the type of file - file or dir
       */
      public void setType(FileType fileTypes) {
          this.type = fileTypes.getValue();
      }
  
      /**
       * When using this as a custom selector, this method will be called.
       * It translates each parameter into the appropriate setXXX() call.
       *
       * @param parameters the complete set of parameters for this selector
       */
      @Override
      public void setParameters(Parameter... parameters) {
          super.setParameters(parameters);
          if (parameters != null) {
              for (Parameter parameter : parameters) {
                  String paramname = parameter.getName();
                  if (TYPE_KEY.equalsIgnoreCase(paramname)) {
                      FileType t = new FileType();
                      t.setValue(parameter.getValue());
                      setType(t);
                  } else {
                      setError("Invalid parameter " + paramname);
                  }
              }
          }
      }
  
      /**
       * Checks to make sure all settings are kosher. In this case, it
       * means that the pattern attribute has been set.
       *
       */
      @Override
      public void verifySettings() {
          if (type == null) {
              setError("The type attribute is required");
          }
      }
  
      /**
       * The heart of the matter. This is where the selector gets to decide
       * on the inclusion of a file in a particular fileset.
       *
       * @param basedir the base directory the scan is being done from
       * @param filename is the name of the file to check
       * @param file is a java.io.File object the selector can use
       * @return whether the file should be selected or not
       */
      @Override
      public boolean isSelected(File basedir, String filename, File file) {
  
          // throw BuildException on error
          validate();
  
          if (file.isDirectory()) {
              return type.equals(FileType.DIR);
          }
          return type.equals(FileType.FILE);
      }
  
      /**
       * Enumerated attribute with the values for types of file
       */
      public static class FileType extends EnumeratedAttribute {
          /** the string value for file */
          public static final String FILE = "file";
          /** the string value for dir */
          public static final String DIR = "dir";
  
          /**
           * @return the values as an array of strings
           */
          @Override
          public String[] getValues() {
              return new String[]{FILE, DIR};
          }
      }
  
  }
  