Package com.cumulocity.microservice.customdecoders.api.util

Class DecoderUtils

java.lang.Object

com.cumulocity.microservice.customdecoders.api.util.DecoderUtils

public final class DecoderUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
DecoderUtils()

Method Summary

Modifier and Type	Method	Description
static String	convertHexToBinary(String hex)	Converts hexadecimal string to binary
static byte	extractBits(int number, int numOfBits, int fromIndex)	Extract a particular number of bits from a particular position in a number
static byte[]	hexStringToByteArray(String str)	Converts a hexadecimal string to a byte array
static int	limitTo16Bits(int inputValue)	Limits the given integer to 16 bits
static double	parseAsFloatingPoint(ByteBuffer buffer)	Parses the ByteBuffer as floating point and converts it to double
static long	parseAsLong(ByteBuffer buffer, boolean signed)	Parses the ByteBuffer as long and converts it to long
static byte[]	reorder(byte[] raw, BIT_BYTE_WORD_ORDER order)	Reorder the input byte array based on Bits, Bytes, Byte Word or Words
static byte	reverse(byte value)	Reverse the given input byte value
static byte[]	reverseBitEndianness(byte[] raw, boolean reverseBitEndianness)	Converts byte[] from Big Endian to Little Endian
static org.joda.time.DateTime	toDateTime(long timestamp)	Converts epoch UNIX timestamp to DateTime
static float	toFloat(short hbits)	Converts short to float
static Float	toFloatFromHexString(String input)	Converts hexadecimal string to Float
static String	toHexString(byte[] bytes)	Converts the given byte array to a hexadecimal string

Methods inherited from class java.lang.Object

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

Constructor Detail

DecoderUtils

public DecoderUtils()

Method Detail

toHexString

public static String toHexString(byte[] bytes)

Converts the given byte array to a hexadecimal string

Parameters:

bytes - the input byte array

Returns:

String the resultant hexadecimal string

hexStringToByteArray

public static byte[] hexStringToByteArray(String str)

Converts a hexadecimal string to a byte array

Parameters:

str - the input hexadecimal string

Returns:

byte[] the resultant byte array

toDateTime

public static org.joda.time.DateTime toDateTime(long timestamp)

Converts epoch UNIX timestamp to DateTime

Parameters:

timestamp - the input epoch timestamp

Returns:

DateTime

convertHexToBinary

public static String convertHexToBinary(String hex)

Converts hexadecimal string to binary

Parameters:

hex - the input hexadecimal string

Returns:

String the resultant binary string

toFloatFromHexString

public static Float toFloatFromHexString(String input)

Converts hexadecimal string to Float

Parameters:

input - the input hexadecimal string

Returns:

Float

reverseBitEndianness

public static byte[] reverseBitEndianness(byte[] raw,
                                          boolean reverseBitEndianness)

Converts byte[] from Big Endian to Little Endian

Parameters:

raw - input byte array

reverseBitEndianness - flag for endian mode (Big/Little Endian)

Returns:

byte[]

reverse

public static byte reverse(byte value)

Reverse the given input byte value

Parameters:

value - the input byte value

Returns:

byte

toFloat

public static float toFloat(short hbits)

Converts short to float

Parameters:

hbits - input short number

Returns:

float

extractBits

public static byte extractBits(int number,
                               int numOfBits,
                               int fromIndex)

Extract a particular number of bits from a particular position in a number

Parameters:

number - the input number

numOfBits - the number of bits to be extracted

fromIndex - the position from where the bits are to be extracted

Returns:

byte

limitTo16Bits

public static int limitTo16Bits(int inputValue)

Limits the given integer to 16 bits

Parameters:

inputValue - the input integer

Returns:

int

parseAsFloatingPoint

public static double parseAsFloatingPoint(ByteBuffer buffer)

Parses the ByteBuffer as floating point and converts it to double

Parameters:

buffer - the input ByteBuffer

Returns:

double

parseAsLong

public static long parseAsLong(ByteBuffer buffer,
                               boolean signed)

Parses the ByteBuffer as long and converts it to long

Parameters:

buffer - the input ByteBuffer

signed - flag for signed/unsigned mode

Returns:

long

reorder

public static byte[] reorder(byte[] raw,
                             BIT_BYTE_WORD_ORDER order)

Reorder the input byte array based on Bits, Bytes, Byte Word or Words

Parameters:

raw - input byte array

order - the parameter based on which the byte array needs to be ordered

Returns:

byte[] the reordered byte array