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 java.util.Collections;
  
  /**
   * This selector is here just to shake up your thinking a bit. Don't get
   * too caught up in boolean, there are other ways you can evaluate a
   * collection of selectors. This one takes a vote of the selectors it
   * contains, and majority wins. You could also have an "all-but-one"
   * selector, a "weighted-average" selector, and so on. These are left
   * as exercises for the reader (as are the usecases where this would
   * be necessary).
   *
   * @since 1.5
   */
  public class MajoritySelector extends BaseSelectorContainer {
  
      private boolean allowtie = true;
  
      /**
       * @return a string describing this object
       */
      public String toString() {
          StringBuilder buf = new StringBuilder();
          if (hasSelectors()) {
              buf.append("{majorityselect: ");
              buf.append(super.toString());
              buf.append("}");
          }
          return buf.toString();
      }
  
      /**
       * A attribute to specify what will happen if number
       * of yes votes is the same as the number of no votes
       * defaults to true
       *
       * @param tiebreaker the value to give if there is a tie
       */
      public void setAllowtie(boolean tiebreaker) {
          allowtie = tiebreaker;
      }
  
      /**
       * Returns true (the file is selected) if most of the other selectors
       * agree. In case of a tie, go by the allowtie setting. That defaults
       * to true, meaning in case of a tie, the file is selected.
       *
       * @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 for the filename that the selector
       * can use
       * @return whether the file should be selected or not
       */
      public boolean isSelected(File basedir, String filename, File file) {
          validate();
          int yesvotes = 0;
          int novotes = 0;
  
          for (FileSelector fs : Collections.list(selectorElements())) {
              if (fs.isSelected(basedir, filename, file)) {
                  yesvotes++;
              } else {
                  novotes++;
              }
          }
          if (yesvotes > novotes) {
              return true;
          }
          if (novotes > yesvotes) {
              return false;
          }
          // At this point, we know we have a tie.
          return allowtie;
      }
  }
  
  