001/* 002 * Copyright (c) 2007-2015 Concurrent, Inc. All Rights Reserved. 003 * 004 * Project and contact information: http://www.cascading.org/ 005 * 006 * This file is part of the Cascading project. 007 * 008 * Licensed under the Apache License, Version 2.0 (the "License"); 009 * you may not use this file except in compliance with the License. 010 * You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, software 015 * distributed under the License is distributed on an "AS IS" BASIS, 016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 017 * See the License for the specific language governing permissions and 018 * limitations under the License. 019 */ 020 021package cascading.tuple.hadoop.io; 022 023import java.io.ByteArrayInputStream; 024 025/** 026 * 027 */ 028public class BufferedInputStream extends ByteArrayInputStream 029 { 030 private static final byte[] ZERO_BYTES = new byte[]{}; 031 032 public BufferedInputStream() 033 { 034 super( ZERO_BYTES ); 035 } 036 037 public void reset( byte[] input, int start, int length ) 038 { 039 this.buf = input; 040 this.count = start + length; 041 this.mark = start; 042 this.pos = start; 043 } 044 045 public byte[] getBuffer() 046 { 047 return buf; 048 } 049 050 public int getPosition() 051 { 052 return pos; 053 } 054 055 public int getLength() 056 { 057 return count; 058 } 059 060 public void clear() 061 { 062 this.buf = ZERO_BYTES; 063 this.count = 0; 064 this.mark = 0; 065 this.pos = 0; 066 } 067 } 068