1 package org.apache.lucene.search.vectorhighlight;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
20 import java.text.BreakIterator;
23 * A {@link BoundaryScanner} implementation that uses {@link BreakIterator} to find
24 * boundaries in the text.
27 public class BreakIteratorBoundaryScanner implements BoundaryScanner {
29 final BreakIterator bi;
31 public BreakIteratorBoundaryScanner(BreakIterator bi){
35 public int findStartOffset(StringBuilder buffer, int start) {
36 // avoid illegal start offset
37 if( start > buffer.length() || start < 1 ) return start;
38 bi.setText(buffer.substring(0, start));
43 public int findEndOffset(StringBuilder buffer, int start) {
44 // avoid illegal start offset
45 if( start > buffer.length() || start < 0 ) return start;
46 bi.setText(buffer.substring(start));
47 return bi.next() + start;