smile.nlp.tokenizer.BreakIteratorSentenceSplitter Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2010 Haifeng Li
*
* 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 smile.nlp.tokenizer;
import java.text.BreakIterator;
import java.util.ArrayList;
import java.util.Locale;
/**
* A sentence splitter based on the java.text.BreakIterator, which supports
* multiple natural languages (selected by locale setting).
*
* @author Haifeng Li
*/
public class BreakIteratorSentenceSplitter implements SentenceSplitter {
/**
* The working horse for splitting sentences.
*/
private BreakIterator boundary;
/**
* Constructor for the default locale.
*/
public BreakIteratorSentenceSplitter() {
boundary = BreakIterator.getSentenceInstance();
}
/**
* Constructor for the given locale.
*/
public BreakIteratorSentenceSplitter(Locale locale) {
boundary = BreakIterator.getSentenceInstance(locale);
}
@Override
public String[] split(String text) {
boundary.setText(text);
ArrayList sentences = new ArrayList<>();
int start = boundary.first();
for (int end = boundary.next();
end != BreakIterator.DONE;
start = end, end = boundary.next()) {
sentences.add(text.substring(start, end).trim());
}
String[] array = new String[sentences.size()];
for (int i = 0; i < array.length; i++) {
array[i] = sentences.get(i);
}
return array;
}
}