opennlp.tools.sentdetect.NewlineSentenceDetector Maven / Gradle / Ivy
/*
* 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 opennlp.tools.sentdetect;
import java.util.ArrayList;
import java.util.List;
import opennlp.tools.util.Span;
/**
* The Newline {@link SentenceDetector} assumes that sentences are line delimited and
* recognizes one sentence per non-empty line.
*/
public class NewlineSentenceDetector implements SentenceDetector {
@Override
public String[] sentDetect(CharSequence s) {
return Span.spansToStrings(sentPosDetect(s), s);
}
@Override
public Span[] sentPosDetect(CharSequence s) {
List sentences = new ArrayList<>();
int start = 0;
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
if (c == '\n' || c == '\r') {
if (i - start > 0) {
Span span = new Span(start, i).trim(s);
if (span.length() > 0) {
sentences.add(span);
}
start = i + 1;
}
}
}
if (s.length() - start > 0) {
Span span = new Span(start, s.length()).trim(s);
if (span.length() > 0) {
sentences.add(span);
}
}
return sentences.toArray(new Span[0]);
}
}