com.legstar.coxb.host
Class HostData

java.lang.Object
  com.legstar.coxb.host.HostData

public class HostData
extends Object

Represents a generic host data content. Mainly a wrapper over a byte array.

Author:

Fady Moussallam

Constructor Summary

HostData(byte[] hostData)
Contructor from existing host data.

HostData(String hexString)
Contructor from a hexadecimal String.

Method Summary

byte[]	getHostData()
int	length()
static byte[]	toByteArray(String string) Helper method to populate a byte array from a hex string representation.
String	toHexString() Helper method to dump field content in hexadecimal.
static String	toHexString(byte[] hostBytes) Helper method to dump field content in hexadecimal.
static String	toHexString(byte[] hostBytes, int maxBytes) Another pretty printing method but with a limit to the number of bytes printed.
static String	toHexString(byte[] hostBytes, int start, int length) Helper method to dump field content in hexadecimal.
static String	toHexString(byte[] hostBytes, int start, int length, int maxBytes) Another pretty printing method but with a limit to the number of bytes printed.

Methods inherited from class java.lang.Object

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

Constructor Detail

HostData

public HostData(byte[] hostData)

Contructor from existing host data.

Parameters:

hostData - byte array representing host field content

HostData

public HostData(String hexString)

Contructor from a hexadecimal String.

Parameters:

hexString - A string of hex representations

Method Detail

toHexString

public String toHexString()

Helper method to dump field content in hexadecimal.

Returns:

a string with hexadecimal representation of the field content

toHexString

public static String toHexString(byte[] hostBytes)

Helper method to dump field content in hexadecimal.

Parameters:

hostBytes - a byte array to get hexadecimal representation for

Returns:

a string with hexadecimal representation of the field content

toHexString

public static String toHexString(byte[] hostBytes,
                                 int start,
                                 int length)

Helper method to dump field content in hexadecimal.

Parameters:

hostBytes - a byte array to get hexadecimal representation for

start - 0-based position of first byte to dump

length - number of bytes to dump

Returns:

a string with hexadecimal representation of the field content

toHexString

public static String toHexString(byte[] hostBytes,
                                 int maxBytes)

Another pretty printing method but with a limit to the number of bytes printed. This method will print an even number of starting and ending bytes leaving a gap between them.

Parameters:

hostBytes - byte array to print

maxBytes - maximum number of bytes to process

Returns:

a pretty string

toHexString

public static String toHexString(byte[] hostBytes,
                                 int start,
                                 int length,
                                 int maxBytes)

Another pretty printing method but with a limit to the number of bytes printed. This method will print an even number of starting and ending bytes leaving a gap between them.

Parameters:

hostBytes - byte array to print

start - 0-based position of first byte to dump

length - total number of bytes to dump

maxBytes - maximum number of bytes to process

Returns:

a pretty string

toByteArray

public static byte[] toByteArray(String string)

Helper method to populate a byte array from a hex string representation.

Parameters:

string - a string of hexadecimal characters to be turned into a byte array

Returns:

an initialized byte array

getHostData

public byte[] getHostData()

Returns:

Returns the hostData.

length

public int length()

Returns:

Returns the hostData length.