org.xbill.DNS.utils
Class DataByteInputStream

java.lang.Object
  |
  +--java.io.InputStream
        |
        +--java.io.ByteArrayInputStream
              |
              +--org.xbill.DNS.utils.DataByteInputStream

public class DataByteInputStream

extends ByteArrayInputStream

An extension of ByteArrayInputStream to support directly reading types used by DNS routines.

See Also:

DataByteOutputStream

Fields inherited from class java.io.ByteArrayInputStream

buf, count, mark, pos

Constructor Summary

DataByteInputStream(byte[] b)
Creates a new DataByteInputStream

Method Summary

int	getPos() Get the current position in the stream
int	read(byte[] b) Read data from the stream.
BigInteger	readBigInteger(int len) Read a BigInteger from the stream, encoded as binary data.
byte	readByte() Read a byte from the stream
int	readInt() Read an int from the stream
long	readLong() Read a long from the stream
short	readShort() Read a short from the stream
String	readString() Read a String from the stream, represented as a length byte followed by data
int	readUnsignedByte() Read an unsigned byte from the stream
int	readUnsignedShort() Read an unsigned short from the stream
void	skipBytes(int n) Read and ignore bytes from the stream

Methods inherited from class java.io.ByteArrayInputStream

available, close, mark, markSupported, read, read, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

DataByteInputStream

public DataByteInputStream(byte[] b)

Creates a new DataByteInputStream

Parameters:

b - The byte array to read from

Method Detail

read

public int read(byte[] b)
         throws IOException

Read data from the stream.

Overrides:

read in class InputStream

Parameters:

b - The array to read into

Returns:

The number of bytes read

readByte

public byte readByte()
              throws IOException

Read a byte from the stream

Returns:

The byte

readUnsignedByte

public int readUnsignedByte()
                     throws IOException

Read an unsigned byte from the stream

Returns:

The unsigned byte as an int

readShort

public short readShort()
                throws IOException

Read a short from the stream

Returns:

The short

readUnsignedShort

public int readUnsignedShort()
                      throws IOException

Read an unsigned short from the stream

Returns:

The unsigned short as an int

readInt

public int readInt()
            throws IOException

Read an int from the stream

Returns:

The int

readLong

public long readLong()
              throws IOException

Read a long from the stream

Returns:

The long

readString

public String readString()
                  throws IOException

Read a String from the stream, represented as a length byte followed by data

Returns:

The String

readBigInteger

public BigInteger readBigInteger(int len)
                          throws IOException

Read a BigInteger from the stream, encoded as binary data. A 0 byte is prepended so that the value is always positive.

Parameters:

len - The number of bytes to read

Returns:

The BigInteger

skipBytes

public void skipBytes(int n)
               throws IOException

Read and ignore bytes from the stream

Parameters:

n - The number of bytes to skip

getPos

public int getPos()

Get the current position in the stream

Returns:

The current position