/*

  * 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.giraph.utils;

 import java.io.ByteArrayInputStream;

 import java.io.DataInput;

 import java.io.DataInputStream;

 import java.io.IOException;

 /**

  * Provides access to a internals of ByteArrayInputStream

  */

 public class ExtendedByteArrayDataInput extends ByteArrayInputStream

   implements ExtendedDataInput {

   /** Internal data input */

   private final DataInput dataInput;

   /**

    * Constructor

    *

    * @param buf Buffer to read

    */

   public ExtendedByteArrayDataInput(byte[] buf) {

     super(buf);

     dataInput = new DataInputStream(this);

   }

   /**

    * Get access to portion of a byte array

    *

    * @param buf Byte array to access

    * @param offset Offset into the byte array

    * @param length Length to read

    */

   public ExtendedByteArrayDataInput(byte[] buf, int offset, int length) {

     super(buf, offset, length);

     dataInput = new DataInputStream(this);

   }

   @Override

   public int getPos() {

     return pos;

   }

   @Override

   public boolean endOfInput() {

     return available() == 0;

   }

   @Override

   public void readFully(byte[] b) throws IOException {

     dataInput.readFully(b);

   }

   @Override

   public void readFully(byte[] b, int off, int len) throws IOException {

     dataInput.readFully(b, off, len);

   }

   @Override

   public int skipBytes(int n) throws IOException {

     return dataInput.skipBytes(n);

   }

   @Override

   public boolean readBoolean() throws IOException {

     return dataInput.readBoolean();

   }

   @Override

   public byte readByte() throws IOException {

     return dataInput.readByte();

   }

   @Override

   public int readUnsignedByte() throws IOException {

     return dataInput.readUnsignedByte();

   }

   @Override

   public short readShort() throws IOException {

     return dataInput.readShort();

   }

   @Override

   public int readUnsignedShort() throws IOException {

     return dataInput.readUnsignedShort();

   }

   @Override

   public char readChar() throws IOException {

     return dataInput.readChar();

   }

   @Override

   public int readInt() throws IOException {

     return dataInput.readInt();

   }

   @Override

   public long readLong() throws IOException {

     return dataInput.readLong();

   }

   @Override

   public float readFloat() throws IOException {

     return dataInput.readFloat();

   }

   @Override

   public double readDouble() throws IOException {

     return dataInput.readDouble();

   }

   @Override

   public String readLine() throws IOException {

     return dataInput.readLine();

   }

   @Override

   public String readUTF() throws IOException {

     return dataInput.readUTF();

   }

 }