Package org.jgroups.util

Class ByteArrayDataInputStream

java.lang.Object

java.io.InputStream

org.jgroups.util.ByteArrayDataInputStream

All Implemented Interfaces:

Closeable, DataInput, AutoCloseable

public class ByteArrayDataInputStream
extends InputStream
implements DataInput

Implements DataInput over a byte[] buffer. This class is not thread safe.

Since:

3.5

Field Summary

Fields

Modifier and Type	Field	Description
protected final byte[]	buf
protected static final ByteBuffer	EMPTY
protected final int	limit
protected int	pos

Constructor Summary

Constructors

Constructor	Description
ByteArrayDataInputStream(byte[] buf)
ByteArrayDataInputStream(byte[] buf, int offset, int length)
ByteArrayDataInputStream(ByteBuffer buffer)
ByteArrayDataInputStream(ByteArray buf)

Method Summary

Modifier and Type	Method	Description
ByteArrayDataInputStream	advance(int amount)	Advances the current position without reading any bytes.
byte[]	buffer()
ByteBuffer	byteBuffer()
int	capacity()
protected int	checkBounds(int pos)
ByteArray	getBuffer()
int	limit()
int	position()
ByteArrayDataInputStream	position(int pos)
int	read()	Reads the next byte of data from buf.
int	read(byte[] b, int off, int len)
boolean	readBoolean()
ByteBuffer	readBuffer(int len)	Non-copying reading of len bytes from the input stream into a ByteBuffer.
byte	readByte()
char	readChar()
double	readDouble()
float	readFloat()
void	readFully(byte[] b)
void	readFully(byte[] b, int off, int len)
int	readInt()
String	readLine()
long	readLong()
short	readShort()
int	readUnsignedByte()
int	readUnsignedShort()
String	readUTF()
int	skipBytes(int n)
String	toString()

Methods inherited from class java.io.InputStream

available, close, mark, markSupported, nullInputStream, read, readAllBytes, readNBytes, readNBytes, reset, skip, skipNBytes, transferTo

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

buf

protected final byte[] buf

pos

protected int pos

limit

protected final int limit

EMPTY

protected static final ByteBuffer EMPTY

Constructor Details

ByteArrayDataInputStream

public ByteArrayDataInputStream(byte[] buf)

ByteArrayDataInputStream

public ByteArrayDataInputStream(byte[] buf,
 int offset,
 int length)

ByteArrayDataInputStream

public ByteArrayDataInputStream(ByteArray buf)

ByteArrayDataInputStream

public ByteArrayDataInputStream(ByteBuffer buffer)

Method Details

position

public ByteArrayDataInputStream position(int pos)

buffer

public byte[] buffer()

getBuffer

public ByteArray getBuffer()

byteBuffer

public ByteBuffer byteBuffer()

position

public int position()

limit

public int limit()

capacity

public int capacity()

advance

public ByteArrayDataInputStream advance(int amount)

Advances the current position without reading any bytes. This can be useful to skip bytes if necessary or if the byte[] is read externally from this InputStream.

Parameters:

amount - the amount to move the position forward

Throws:

IndexOutOfBoundsException - if the amount to move and the current position is larger than the limit

read

public int read()

Reads the next byte of data from buf. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the buffer has been reached, the value -1 is returned.

Specified by:

read in class InputStream

Returns:

the next byte of data, or -1 if the end of the stream has been reached.

read

public int read(byte[] b,
 int off,
 int len)

Overrides:

read in class InputStream

readFully

public void readFully(byte[] b)
               throws IOException

Specified by:

readFully in interface DataInput

Throws:

IOException

readFully

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

Specified by:

readFully in interface DataInput

Throws:

IOException

readBuffer

public ByteBuffer readBuffer(int len)

Non-copying reading of len bytes from the input stream into a ByteBuffer.

Reads len bytes from the input stream and wraps them in a ByteBuffer. Note that the buffer is pinned to a subrange of the underlying 'buf' byte[] array: make sure that the contents of 'buf' don't change until you're done with 'buf', or else you'll end up with unpredictable behavior.

skipBytes

public int skipBytes(int n)

Specified by:

skipBytes in interface DataInput

readBoolean

public boolean readBoolean()
                    throws IOException

Specified by:

readBoolean in interface DataInput

Throws:

IOException

readByte

public byte readByte()
              throws IOException

Specified by:

readByte in interface DataInput

Throws:

IOException

readUnsignedByte

public int readUnsignedByte()
                     throws IOException

Specified by:

readUnsignedByte in interface DataInput

Throws:

IOException

readShort

public short readShort()
                throws IOException

Specified by:

readShort in interface DataInput

Throws:

IOException

readUnsignedShort

public int readUnsignedShort()
                      throws IOException

Specified by:

readUnsignedShort in interface DataInput

Throws:

IOException

readChar

public char readChar()
              throws IOException

Specified by:

readChar in interface DataInput

Throws:

IOException

readInt

public int readInt()
            throws IOException

Specified by:

readInt in interface DataInput

Throws:

IOException

readLong

public long readLong()
              throws IOException

Specified by:

readLong in interface DataInput

Throws:

IOException

readFloat

public float readFloat()
                throws IOException

Specified by:

readFloat in interface DataInput

Throws:

IOException

readDouble

public double readDouble()
                  throws IOException

Specified by:

readDouble in interface DataInput

Throws:

IOException

readLine

public String readLine()
                throws IOException

Specified by:

readLine in interface DataInput

Throws:

IOException

readUTF

public String readUTF()
               throws IOException

Specified by:

readUTF in interface DataInput

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

checkBounds

protected int checkBounds(int pos)