com.mindtree.techworks.insight.remoteprotocol.util
Class ByteUtils

java.lang.Object
  com.mindtree.techworks.insight.remoteprotocol.util.ByteUtils

public class ByteUtils
extends java.lang.Object

Util class for byte manipulation.

Version:

$Revision: $ $Date: $

Author:

Bindul Bhowmik

Constructor Summary

ByteUtils()

Method Summary

static byte[]	getByteArrayForCharacterArray(char[] inputArray) Creates a byte array representing the input character array.
static byte[]	getByteArrayForInt(int valueToConvert) Creates a byte array for an int.
static byte[]	getByteArrayForShort(short valueToConvert) Creates a byte array for a short.
static byte[]	getByteArrayForString(java.lang.String inputString) Creates a byte array representing the Input String.
static void	putBytesInArrayForInt(int valueToConvert, byte[] buf, int offset) Creates a byte array for an int.
static void	putBytesInArrayForShort(short valueToConvert, byte[] buf, int offset) Creates a byte array for a short.
static int	readIntFromByteArray(byte[] inputArr, int offset) Reads an int value from a byte array.
static short	readShortFromByteArray(byte[] inputArr, int offset) Reads a short value from a byte array.
static java.lang.String	readStringFromByteArray(byte[] inputArr, int offset, int length) Decodes a string value from the byte Array passed in.

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteUtils

public ByteUtils()

Method Detail

readShortFromByteArray

public static short readShortFromByteArray(byte[] inputArr,
                                           int offset)

Reads a short value from a byte array.

Parameters:

inputArr - The byte array to read data from

offset - The offset to read data from

Returns:

The short read from the array

Throws:

java.lang.ArrayIndexOutOfBoundsException - If data cannot be read from specified position

readIntFromByteArray

public static int readIntFromByteArray(byte[] inputArr,
                                       int offset)

Reads an int value from a byte array.

Parameters:

inputArr - The byte array to read data from

offset - The offset to read data from

Returns:

The int read from the array

Throws:

java.lang.ArrayIndexOutOfBoundsException - If data cannot be read from specified position

getByteArrayForShort

public static byte[] getByteArrayForShort(short valueToConvert)

Creates a byte array for a short. The returned array always has 2 elements.

Parameters:

valueToConvert - The short value to convert

Returns:

The byte array containing the two bytes of the short. The size is always 2.

putBytesInArrayForShort

public static void putBytesInArrayForShort(short valueToConvert,
                                           byte[] buf,
                                           int offset)

Creates a byte array for a short. The array values are placed in the input array buf from the position specified by the offset.

Parameters:

valueToConvert - The short value to convert

buf - The buffer to place the bytes in

offset - The offset to insert the values from

Throws:

java.lang.ArrayIndexOutOfBoundsException - If the specified position in the array is not available.

getByteArrayForInt

public static byte[] getByteArrayForInt(int valueToConvert)

Creates a byte array for an int. The returned array always has 4 elements.

Parameters:

valueToConvert - The integer value to convert

Returns:

The byte array containing the four bytes of the integer. The size is always 4.

putBytesInArrayForInt

public static void putBytesInArrayForInt(int valueToConvert,
                                         byte[] buf,
                                         int offset)

Creates a byte array for an int. The array values are placed in the input array buf from the position specified by the offset.

Parameters:

valueToConvert - The integer value to convert

buf - The buffer to place the bytes in

offset - The offset to insert the values from

Throws:

java.lang.ArrayIndexOutOfBoundsException - If the specified position in the array is not available.

getByteArrayForString

public static byte[] getByteArrayForString(java.lang.String inputString)
                                    throws java.nio.charset.CharacterCodingException

Creates a byte array representing the Input String. Every character is represented in two bytes. This method is same as calling #getByteArrayForCharacterArray(char[]) method with the character array representing the string.

Parameters:

inputString - The input string to convert

Returns:

A byte array for the string.

Throws:

java.nio.charset.CharacterCodingException - If there is an exception encoding the characters.

getByteArrayForCharacterArray

public static byte[] getByteArrayForCharacterArray(char[] inputArray)
                                            throws java.nio.charset.CharacterCodingException

Creates a byte array representing the input character array. The size of the array returned is twice that of the array input.

Parameters:

inputArray - The array to convert

Returns:

An array containing the bytes for the characters

Throws:

java.nio.charset.CharacterCodingException - If there is an exception encoding the characters.

readStringFromByteArray

public static java.lang.String readStringFromByteArray(byte[] inputArr,
                                                       int offset,
                                                       int length)
                                                throws java.nio.charset.CharacterCodingException

Decodes a string value from the byte Array passed in.

Parameters:

inputArr - The input array

offset - The position to start reading from

length - The length to read upto

Returns:

The string read

Throws:

java.nio.charset.CharacterCodingException - If there is an exception decoding the characters.