/**
* Copyright (C) 2013 Christian Kohlschütter (ckkohl79@gmail.com)
*
* Licensed 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 de.l3s.boilerpipe.filters.simple;
import java.util.List;
import de.l3s.boilerpipe.BoilerpipeFilter;
import de.l3s.boilerpipe.BoilerpipeProcessingException;
import de.l3s.boilerpipe.document.TextBlock;
import de.l3s.boilerpipe.document.TextDocument;
/**
* Reverts the "isContent" flag for all {@link TextBlock}s
*
* @author Christian Kohlschütter
*/
public final class InvertedFilter implements BoilerpipeFilter {
public static final InvertedFilter INSTANCE = new InvertedFilter();
private InvertedFilter() {
}
public boolean process(TextDocument doc)
throws BoilerpipeProcessingException {
List<TextBlock> tbs = doc.getTextBlocks();
if (tbs.isEmpty()) {
return false;
}
for (TextBlock tb : tbs) {
tb.setIsContent(!tb.isContent());
}
return true;
}
}