| /** |
| * 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 org.apache.hadoop.hdfs.tools.offlineEditsViewer; |
| |
| import java.io.FileInputStream; |
| import java.io.DataInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| |
| /** |
| * Tokenizer that reads tokens from a binary file |
| * |
| */ |
| @InterfaceAudience.Private |
| @InterfaceStability.Unstable |
| public class BinaryTokenizer implements Tokenizer { |
| |
| private DataInputStream in; |
| |
| /** |
| * BinaryTokenizer constructor |
| * |
| * @param filename input filename |
| */ |
| public BinaryTokenizer(String filename) throws FileNotFoundException { |
| in = new DataInputStream(new FileInputStream(filename)); |
| } |
| |
| /** |
| * BinaryTokenizer constructor |
| * |
| * @param in input stream |
| */ |
| public BinaryTokenizer(DataInputStream in) throws IOException { |
| this.in = in; |
| } |
| |
| /** |
| * @see org.apache.hadoop.hdfs.tools.offlineEditsViewer.Tokenizer#read |
| * |
| * @param t a Token to read |
| * @return token that was just read |
| */ |
| @Override |
| public Token read(Token t) throws IOException { |
| t.fromBinary(in); |
| return t; |
| } |
| } |