tools

Class BytesArrayTools

java.lang.Object

tools.BytesArrayTools

public class BytesArrayTools
extends java.lang.Object

Helper to manipulate byte[].

Version:

1.0

Author:

Louis Royer, Flavien Haas, JS Auge

Constructor Summary

Constructors

Constructor and Description
BytesArrayTools()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	cleanStrings(java.lang.String str) Remove trailing null bytes from string.
static int	computeStringArraySize(java.lang.String[] strArray, java.lang.String separator) Compute size of string array once converted to byte array with separator
static byte[]	readByteArray(byte[] src, int start, int end) Read byte Array to byte Array
static int	readInt(byte[] array, int start) Read int from a bytearray
static int	readInt16Bits(byte[] array, int start) Read int from a bytearray of 16 bits
static long	readLong(byte[] array, int start) Read long from a bytearray
static java.lang.String	readString(byte[] array, int start, int size) Read string from byte array
static java.lang.String	readString(byte[] array, int start, java.lang.String endStr) Read string from byte array
static java.lang.String[]	readStringArray(byte[] byteArray, int start, int size, java.lang.String separator) Read string array from byte array starting at start with size parameter.
static void	write(byte[] dst, byte[] src, int start) Write byte Array to byte Array.
static void	write(byte[] array, int start, int value) Write int in a bytearray
static void	write(byte[] array, int start, long value) Write long in a bytearray
static void	write(byte[] byteArray, java.lang.String[] strArray, int start, java.lang.String separator) Write a list of string to a byte array.
static void	write(byte[] array, java.lang.String str, int start) Write a string to a byte array.
static void	write16Bits(byte[] array, int start, int value) Write int in a bytearray 16 bits version

Methods inherited from class java.lang.Object

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

Constructor Detail

BytesArrayTools

public BytesArrayTools()

Method Detail

write

public static void write(byte[] array,
                         int start,
                         int value)

Write int in a bytearray

Parameters:

array - the array to write

start - where to begin writting

value - int to write

write16Bits

public static void write16Bits(byte[] array,
                               int start,
                               int value)
                        throws SizeError

Write int in a bytearray 16 bits version

Parameters:

array - the array to write

start - where to begin writting

value - int to write

Throws:

SizeError

write

public static void write(byte[] array,
                         int start,
                         long value)

Write long in a bytearray

Parameters:

array - the array to write

start - where to begin writting

value - long to write

readInt

public static int readInt(byte[] array,
                          int start)
                   throws SizeError

Read int from a bytearray

Parameters:

array - the array to read

start - where to begin reading

Returns:

value read as int

Throws:

SizeError

readInt16Bits

public static int readInt16Bits(byte[] array,
                                int start)

Read int from a bytearray of 16 bits

Parameters:

array - the array to read

start - where to begin reading

Returns:

value read as 16 bits int

readLong

public static long readLong(byte[] array,
                            int start)
                     throws SizeError

Read long from a bytearray

Parameters:

array - the array to read

start - where to begin reading

Returns:

value read as long

Throws:

SizeError

cleanStrings

public static java.lang.String cleanStrings(java.lang.String str)

Remove trailing null bytes from string.

Parameters:

str - input string

Returns:

str without trailing null bytes

write

public static void write(byte[] byteArray,
                         java.lang.String[] strArray,
                         int start,
                         java.lang.String separator)
                  throws java.lang.InternalError

Write a list of string to a byte array. String are separated by a separator.

Parameters:

byteArray - array to write

strArray - string array to read

start - start position to write in byteArray

separator - separator to use

Throws:

java.lang.InternalError

readStringArray

public static java.lang.String[] readStringArray(byte[] byteArray,
                                                 int start,
                                                 int size,
                                                 java.lang.String separator)
                                          throws java.lang.InternalError

Read string array from byte array starting at start with size parameter.

Parameters:

byteArray - Array to read

start - Start position

size - Size to read

separator - Separator used

Returns:

String array output

Throws:

java.lang.InternalError

computeStringArraySize

public static int computeStringArraySize(java.lang.String[] strArray,
                                         java.lang.String separator)

Compute size of string array once converted to byte array with separator

Parameters:

strArray - String Array

separator - Separator used

Returns:

size

write

public static void write(byte[] array,
                         java.lang.String str,
                         int start)
                  throws java.lang.InternalError

Write a string to a byte array.

Parameters:

array - Byte Array to write

str - String to read

start - Start position in byte array to write

Throws:

java.lang.InternalError

readString

public static java.lang.String readString(byte[] array,
                                          int start,
                                          int size)
                                   throws java.lang.InternalError

Read string from byte array

Parameters:

array - Byte array to read

start - start position in byte array

size - size to read

Returns:

String read

Throws:

java.lang.InternalError

readString

public static java.lang.String readString(byte[] array,
                                          int start,
                                          java.lang.String endStr)
                                   throws java.lang.InternalError

Read string from byte array

Parameters:

array - Byte array to read

start - start position in byte array

endStr - End string delimiter

Returns:

String read

Throws:

java.lang.InternalError

write

public static void write(byte[] dst,
                         byte[] src,
                         int start)

Write byte Array to byte Array.

Parameters:

dst - Destination byte Array

src - Source byte Array

start - Start in dest array

readByteArray

public static byte[] readByteArray(byte[] src,
                                   int start,
                                   int end)
                            throws ProtocolError

Read byte Array to byte Array

Parameters:

src - Source byte Array

start - Start position in source

end - End position in source

Returns:

Resulting byte array

Throws:

ProtocolError