| /* |
| * 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 |
| * |
| * 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 org.apache.lucene.search.uhighlight; |
| |
| import java.text.BreakIterator; |
| import java.text.CharacterIterator; |
| |
| /** Just produces one single fragment for the entire text */ |
| public final class WholeBreakIterator extends BreakIterator { |
| private CharacterIterator text; |
| private int start; |
| private int end; |
| private int current; |
| |
| @Override |
| public int current() { |
| return current; |
| } |
| |
| @Override |
| public int first() { |
| return (current = start); |
| } |
| |
| @Override |
| public int following(int pos) { |
| if (pos < start || pos > end) { |
| throw new IllegalArgumentException("offset out of bounds"); |
| } else if (pos == end) { |
| // this conflicts with the javadocs, but matches actual behavior (Oracle has a bug in something) |
| // https://bugs.openjdk.java.net/browse/JDK-8015110 |
| current = end; |
| return DONE; |
| } else { |
| return last(); |
| } |
| } |
| |
| @Override |
| public CharacterIterator getText() { |
| return text; |
| } |
| |
| @Override |
| public int last() { |
| return (current = end); |
| } |
| |
| @Override |
| public int next() { |
| if (current == end) { |
| return DONE; |
| } else { |
| return last(); |
| } |
| } |
| |
| @Override |
| public int next(int n) { |
| if (n < 0) { |
| for (int i = 0; i < -n; i++) { |
| previous(); |
| } |
| } else { |
| for (int i = 0; i < n; i++) { |
| next(); |
| } |
| } |
| return current(); |
| } |
| |
| @Override |
| public int preceding(int pos) { |
| if (pos < start || pos > end) { |
| throw new IllegalArgumentException("offset out of bounds"); |
| } else if (pos == start) { |
| // this conflicts with the javadocs, but matches actual behavior (Oracle has a bug in something) |
| // https://bugs.openjdk.java.net/browse/JDK-8015110 |
| current = start; |
| return DONE; |
| } else { |
| return first(); |
| } |
| } |
| |
| @Override |
| public int previous() { |
| if (current == start) { |
| return DONE; |
| } else { |
| return first(); |
| } |
| } |
| |
| @Override |
| public void setText(CharacterIterator newText) { |
| start = newText.getBeginIndex(); |
| end = newText.getEndIndex(); |
| text = newText; |
| current = start; |
| } |
| } |