opennlp.tools.ml.model.PlainTextFileDataReader 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.ml.model;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.zip.GZIPInputStream;
/**
* A generic {@link DataReader} implementation for plain text files.
*
* @see DataReader
*/
public class PlainTextFileDataReader implements DataReader {
private final BufferedReader input;
/**
* Initializes a {@link PlainTextFileDataReader} via a {@link File}.
*
* @param f The {@link File} that references the model to be read.
*
* @throws IOException Thrown if IO errors occurred.
*/
public PlainTextFileDataReader(File f) throws IOException {
if (f.getName().endsWith(".gz")) {
input = new BufferedReader(new InputStreamReader(new BufferedInputStream(
new GZIPInputStream(new BufferedInputStream(new FileInputStream(f))))));
}
else {
input = new BufferedReader(new InputStreamReader(new BufferedInputStream(new FileInputStream(f))));
}
}
/**
* Initializes a {@link PlainTextFileDataReader} via a {@link InputStream}.
*
* @param in The {@link InputStream} that references the file to be read.
*/
public PlainTextFileDataReader(InputStream in) {
input = new BufferedReader(new InputStreamReader(in));
}
/**
* Initializes a {@link PlainTextFileDataReader} via a {@link BufferedReader}.
*
* @param in The {@link BufferedReader} that references the file to be read.
*/
public PlainTextFileDataReader(BufferedReader in) {
input = in;
}
/**
* {@inheritDoc}
*/
@Override
public double readDouble() throws IOException {
return Double.parseDouble(input.readLine());
}
/**
* {@inheritDoc}
*/
@Override
public int readInt() throws IOException {
return Integer.parseInt(input.readLine());
}
/**
* {@inheritDoc}
*/
@Override
public String readUTF() throws IOException {
return input.readLine();
}
}