/*
* 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.cmdline.sentdetect;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import opennlp.tools.cmdline.CLI;
import opennlp.tools.cmdline.CmdLineTool;
import opennlp.tools.cmdline.CmdLineUtil;
import opennlp.tools.cmdline.PerformanceMonitor;
import opennlp.tools.cmdline.TerminateToolException;
import opennlp.tools.sentdetect.SentenceDetectorME;
import opennlp.tools.sentdetect.SentenceModel;
import opennlp.tools.util.ObjectStream;
import opennlp.tools.util.ParagraphStream;
import opennlp.tools.util.PlainTextByLineStream;
/**
* A sentence detector which uses a maxent model to predict the sentences.
*/
public final class SentenceDetectorTool implements CmdLineTool {
public String getName() {
return "SentenceDetector";
}
public String getShortDescription() {
return "learnable sentence detector";
}
public String getHelp() {
return "Usage: " + CLI.CMD + " " + getName() + " model < sentences";
}
/**
* Perform sentence detection the input stream.
*
* A newline will be treated as a paragraph boundary.
*/
public void run(String[] args) {
if (args.length != 1) {
System.out.println(getHelp());
throw new TerminateToolException(1);
}
SentenceModel model = new SentenceModelLoader().load(new File(args[0]));
SentenceDetectorME sdetector = new SentenceDetectorME(model);
ObjectStream<String> paraStream =
new ParagraphStream(new PlainTextByLineStream(new InputStreamReader(System.in)));
PerformanceMonitor perfMon = new PerformanceMonitor(System.err, "sent");
perfMon.start();
try {
String para;
while ((para = paraStream.read()) != null) {
String[] sents = sdetector.sentDetect(para);
for (String sentence : sents) {
System.out.println(sentence);
}
perfMon.incrementCounter(sents.length);
System.out.println();
}
}
catch (IOException e) {
CmdLineUtil.handleStdinIoError(e);
}
perfMon.stopAndPrintFinalResult();
}
}