freenet.support

Class Buffer

java.lang.Object

freenet.support.Buffer

All Implemented Interfaces:

WritableToDataOutputStream

public class Buffer
extends java.lang.Object
implements WritableToDataOutputStream

Wrapper for a byte array which handles serialisation/deserialisation

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	VERSION

Constructor Summary

Constructors

Constructor and Description
Buffer(byte[] data) Create a Buffer from a byte array
Buffer(byte[] data, int start, int length)
Buffer(java.io.DataInput dis) Create a Buffer by reading a DataInputStream.

Method Summary

Modifier and Type	Method and Description
byte	byteAt(int pos)
void	copyTo(byte[] array, int position) Copy the data to a byte array
boolean	equals(java.lang.Object o)
byte[]	getData() Retrieve a byte array containing the data in this buffer.
int	getLength()
int	hashCode()
java.lang.String	toString()
void	writeToDataOutputStream(java.io.DataOutputStream stream)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

VERSION

public static final java.lang.String VERSION

See Also:

Constant Field Values

Constructor Detail

Buffer

public Buffer(java.io.DataInput dis)
       throws java.io.IOException

Create a Buffer by reading a DataInputStream. Note that this a) expects that the first 4 bytes to be a length indicator of the rest of the byte stream and b) these first 4 bytes are removed from the byte stream before storing the rest

Parameters:

dis - to read bytes from

Throws:

java.lang.IllegalArgumentException - If the length integer is negative or exceeds Serializer.MAX_ARRAY_LENGTH.

java.io.IOException - error reading from dis

Buffer

public Buffer(byte[] data)

Create a Buffer from a byte array

Parameters:

data -

Buffer

public Buffer(byte[] data,
              int start,
              int length)

Method Detail

getData

public byte[] getData()

Retrieve a byte array containing the data in this buffer. Will be copied if the data does not fill the whole array, so please don't rely on it being the internal buffer.

Returns:

The byte array

copyTo

public void copyTo(byte[] array,
                   int position)

Copy the data to a byte array

Parameters:

array -

position -

byteAt

public byte byteAt(int pos)

writeToDataOutputStream

public void writeToDataOutputStream(java.io.DataOutputStream stream)
                             throws java.io.IOException

Specified by:

writeToDataOutputStream in interface WritableToDataOutputStream

Throws:

java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

getLength

public int getLength()