at.knowcenter.wag.exactparser
Class ByteArrayUtils

java.lang.Object
  at.knowcenter.wag.exactparser.ByteArrayUtils

public abstract class ByteArrayUtils
extends Object

Abstract class that contains utility methods for handling byte arrays.

Author:

wprinz

Field Summary

static String

BYTE_ARRAY_ENCODING

Constructor Summary

ByteArrayUtils()

Method Summary

static boolean	compareByteArrays(byte[] data, int index, byte[] search) Compares the two byte arrays for equality.
static boolean	contains(byte[] byte_array, byte data) Checks, if the sought data byte is contained within the byte array.
static String	convertByteArrayToString(byte[] data) Converts the byte array to a String.
static int	indexOf(byte[] data, int index, byte[] search) Finds the first occurance of search in data starting to search from the given index.
static int	lastIndexOf(byte[] data, byte[] search) Finds the last occurance of the array.

Methods inherited from class java.lang.Object

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

Field Detail

BYTE_ARRAY_ENCODING

public static final String BYTE_ARRAY_ENCODING

See Also:

Constant Field Values

Constructor Detail

ByteArrayUtils

public ByteArrayUtils()

Method Detail

convertByteArrayToString

public static String convertByteArrayToString(byte[] data)
                                       throws UnsupportedEncodingException

Converts the byte array to a String.

Parameters:

data - The byte array.

Returns:

Returns the String.

Throws:

UnsupportedEncodingException - Forwarded exception

indexOf

public static int indexOf(byte[] data,
                          int index,
                          byte[] search)

Finds the first occurance of search in data starting to search from the given index.

Parameters:

data - The big array.

index - The index to start searching from.

search - The sought array.

Returns:

Returns the index of the found occurence or -1 if nothing was found.

lastIndexOf

public static int lastIndexOf(byte[] data,
                              byte[] search)

Finds the last occurance of the array.

Parameters:

data - The source array to be searched.

search - The sought array.

Returns:

Returns the index of the last occurance - or -1 if nothing was found.

compareByteArrays

public static boolean compareByteArrays(byte[] data,
                                        int index,
                                        byte[] search)

Compares the two byte arrays for equality.

Parameters:

data - The source array.

index - In index into the source array marking where the comparison should start.

search - The sought array.

Returns:

Returns true if the first search.length bytes of data+index and search match exactly. Returns false otherwise.

contains

public static boolean contains(byte[] byte_array,
                               byte data)

Checks, if the sought data byte is contained within the byte array.

Parameters:

byte_array - The byte array.

data - A data byte sought within the byte array.

Returns:

Returns true, if the data byte was found (at least once) in the byte array, false otherwise.