opennlp.maxent.PlainTextByLineDataStream 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.maxent;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.Reader;
/**
* This DataStream implementation will take care of reading a plain text file
* and returning the Strings between each new line character, which is what
* many Maxent applications need in order to create EventStreams.
*/
public class PlainTextByLineDataStream implements DataStream {
BufferedReader dataReader;
String next;
public PlainTextByLineDataStream(Reader dataSource) {
dataReader = new BufferedReader(dataSource);
try {
next = dataReader.readLine();
} catch (IOException e) {
e.printStackTrace();
}
}
public Object nextToken() {
String current = next;
try {
next = dataReader.readLine();
} catch (Exception e) {
e.printStackTrace();
}
return current;
}
public boolean hasNext() {
return next != null;
}
}