code: /**
   * boilerpipe
   *
   * Copyright (c) 2009, 2014 Christian Kohlschütter
   *
   * The author 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
   *
   *     http://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 com.kohlschutter.boilerpipe.filters.simple;
  
  import com.kohlschutter.boilerpipe.BoilerpipeFilter;
  import com.kohlschutter.boilerpipe.BoilerpipeProcessingException;
  import com.kohlschutter.boilerpipe.document.TextBlock;
  import com.kohlschutter.boilerpipe.document.TextDocument;
  
  /**
   * Marks all blocks as content.
   */
  public final class MarkEverythingContentFilter implements BoilerpipeFilter {
    public static final MarkEverythingContentFilter INSTANCE = new MarkEverythingContentFilter();
  
    private MarkEverythingContentFilter() {
    }
  
    public boolean process(final TextDocument doc) throws BoilerpipeProcessingException {
  
      boolean changes = false;
  
      for (TextBlock tb : doc.getTextBlocks()) {
        if (!tb.isContent()) {
          tb.setIsContent(true);
          changes = true;
        }
      }
  
      return changes;
  
    }
  }
  