//License
/***
* Java Modbus Library (jamod)
* Copyright (c) 2002-2004, jamod development team
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the author nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS
* IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
***/
package net.wimpi.modbus.io;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.IOException;
/**
* Class implementing a byte array input stream with
* a DataInput interface.
*
* @author Dieter Wimberger
* @version 1.2rc2 (14/04/2014)
*/
public class BytesInputStream
extends FastByteArrayInputStream
implements DataInput {
DataInputStream m_Din;
/**
* Constructs a new <tt>BytesInputStream</tt> instance,
* with an empty buffer of a given size.
*
* @param size the size of the input buffer.
*/
public BytesInputStream(int size) {
super(new byte[size]);
m_Din = new DataInputStream(this);
}//BytesInputStream
/**
* Constructs a new <tt>BytesInputStream</tt> instance,
* that will read from the given data.
*
* @param data a byte array containing data to be read.
*/
public BytesInputStream(byte[] data) {
super(data);
m_Din = new DataInputStream(this);
}//BytesInputStream
/**
* Resets this <tt>BytesInputStream</tt> using the given
* byte[] as new input buffer.
*
* @param data a byte array with data to be read.
*/
public void reset(byte[] data) {
// System.out.println("reset(byte[])::count=" + count + " pos=" + pos);
pos = 0;
mark = 0;
buf = data;
count = data.length;
}//reset
/**
* Resets this <tt>BytesInputStream</tt> using the given
* byte[] as new input buffer and a given length.
*
* @param data a byte array with data to be read.
* @param length the length of the buffer to be considered.
*/
public void reset(byte[] data, int length) {
pos = 0;
mark = 0;
count = length;
buf = data;
readlimit = -1;
//System.out.println("reset(byte[],int)::count=" + count + " pos=" + pos);
}//reset
/**
* Resets this <tt>BytesInputStream</tt> assigning the input buffer
* a new length.
*
* @param length the length of the buffer to be considered.
*/
public void reset(int length) {
//System.out.println("reset(int)::count=" + count + " pos=" + pos);
pos = 0;
count = length;
}//reset
/**
* Skips the given number of bytes or all bytes till the end
* of the assigned input buffer length.
*
* @param n the number of bytes to be skipped as <tt>int</tt>.
* @return the number of bytes skipped.
*/
public int skip(int n) {
mark(pos);
pos += n;
return n;
}//skip
/**
* Returns the reference to the input buffer.
*
* @return the reference to the <tt>byte[]</tt> input buffer.
*/
public byte[] getBuffer() {
return buf;
}//getBuffer
public int getBufferLength() {
return buf.length;
}//getBufferLength
public void readFully(byte b[])
throws IOException {
m_Din.readFully(b);
}//readFully
public void readFully(byte b[], int off, int len)
throws IOException {
m_Din.readFully(b, off, len);
}//readFully
public int skipBytes(int n)
throws IOException {
return m_Din.skipBytes(n);
}//skipBytes
public boolean readBoolean()
throws IOException {
return m_Din.readBoolean();
}//readBoolean
public byte readByte()
throws IOException {
return m_Din.readByte();
}
public int readUnsignedByte()
throws IOException {
return m_Din.readUnsignedByte();
}//readUnsignedByte
public short readShort()
throws IOException {
return m_Din.readShort();
}//readShort
public int readUnsignedShort()
throws IOException {
return m_Din.readUnsignedShort();
}//readUnsignedShort
public char readChar()
throws IOException {
return m_Din.readChar();
}//readChar
public int readInt()
throws IOException {
return m_Din.readInt();
}//readInt
public long readLong()
throws IOException {
return m_Din.readLong();
}//readLong
//
public float readFloat()
throws IOException {
return m_Din.readFloat();
}//readFloat
public double readDouble()
throws IOException {
return m_Din.readDouble();
}//readDouble
//
public String readLine()
throws IOException {
throw new IOException("Not supported.");
}//readLine
public String readUTF()
throws IOException {
return m_Din.readUTF();
}//readUTF
}//class BytesInputStream