com.t_arn.lib.util

Class taUtils

java.lang.Object

com.t_arn.lib.util.taUtils

public class taUtils
extends java.lang.Object

This class provides several handy methods for the Eve VM.

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.lang.String	stVersion Contains the version of the class.

Constructor Summary

Constructors

Constructor and Description
taUtils() Constructor of the class.

Method Summary

Modifier and Type	Method and Description
static java.lang.String	byteArray2hexString(byte[] input) Converts a byte array into a hex string with unlimited line length
static java.lang.String	byteArray2hexString(byte[] input, int start, int len) Converts part of a byte array into a hex string with unlimited line length
static java.lang.String	byteArray2hexString(byte[] input, int start, int len, int lineLen) Converts part of a byte array into a hex string.
static boolean	byteArrayEquals(byte[] first, byte[] second) Checks if two byte arrays are the same.
static java.lang.String	getStackTrace(java.lang.Throwable t) Gets the stack trace in a string
static java.lang.String	getVersion() Returns the version of the class.
static java.lang.String	getVmName() Returns the name of the running VM
static byte[]	hexString2byteArray(java.lang.String input) Converts a hex string into a byte array.
static java.lang.String	hexString2String(java.lang.String input) Converts a hex string into a character String.
static int	indexOf(java.lang.String[] array, java.lang.String str) Gets the index of a String in a String array
static double	parseDouble(java.lang.String s, double defaultValue)
static int	parseInt(java.lang.String s, int defaultValue) Calls parseInt(s,10,defaultValue)
static int	parseInt(java.lang.String s, int radix, int defaultValue) Converts a String to an int value.
static long	parseLong(java.lang.String s, long defaultValue) Converts a String to a long value.
static int	readIntLE(byte[] source, int offset, int numBytes) This reads an integer value from a byte array with the specified number of bytes.
static java.lang.String	readLineFromKeyboard() Reads a line from stdin
static int	searchByteArray(byte[] buffer, byte[] searchFor, int start) Searches a byte array inside another byte array.
static java.lang.String	string2hexString(java.lang.String input) Converts a String into a hex String.
static boolean	stringContains(java.lang.String bigString, java.lang.String smallString, boolean ignoreCase)
static java.lang.String	stringFill(java.lang.String Source, boolean inFront, char fillChar, int newLength) Fills a String with the supplied character until it reaches the supplied lenght.
static java.lang.String	stringJoin(java.lang.String[] data, java.lang.String separator) Creates a new string from the strings in data, adding the separator string after every string from data.
static java.lang.String	stringReplace(java.lang.String s, java.lang.String f, java.lang.String r) Replaces all instances of the String f within the String s with the String r.
static java.lang.String	stringReplace(java.lang.String s, java.lang.String f, java.lang.String r, boolean ignoreCase) Replaces all instances of the String f within the String s with the String r.
static java.lang.String	stringSet(char c, int length) Creates a new string where all characters are the same.
static java.lang.String[]	stringSplit(java.lang.String data, java.lang.String separator) Creates a new string array from the string in data, splitting when separator is found.

Methods inherited from class java.lang.Object

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

Field Detail

stVersion

protected static java.lang.String stVersion

Contains the version of the class. Must be overridden when class is extended.

Constructor Detail

taUtils

public taUtils()

Constructor of the class. Since all methods are static, the Constructor is not really needed.

Method Detail

byteArray2hexString

public static java.lang.String byteArray2hexString(byte[] input)

Converts a byte array into a hex string with unlimited line length

Parameters:

input - the byte array to be converted

Returns:

returns the hex String

byteArray2hexString

public static java.lang.String byteArray2hexString(byte[] input,
                                                   int start,
                                                   int len)

Converts part of a byte array into a hex string with unlimited line length

Parameters:

input - the byte array to be converted

start - offset of the starting byte in the array

len - number of bytes to convert

Returns:

returns the hex String

byteArray2hexString

public static java.lang.String byteArray2hexString(byte[] input,
                                                   int start,
                                                   int len,
                                                   int lineLen)

Converts part of a byte array into a hex string. Code based on public domain source by Jon Howell

Parameters:

input - the byte array to be converted

start - offset of the starting byte in the array

len - number of bytes to convert

lineLen - length of the hex lines. If 0, the lines are not wrapped

Returns:

returns the hex String

byteArrayEquals

public static boolean byteArrayEquals(byte[] first,
                                      byte[] second)

Checks if two byte arrays are the same.

Parameters:

first - first byte array

second - second byte array

Returns:

returns true if they are the same, false otherwise

getStackTrace

public static java.lang.String getStackTrace(java.lang.Throwable t)

Gets the stack trace in a string

Parameters:

t - The Throwable object

Returns:

The stack trace

getVersion

public static java.lang.String getVersion()

Returns the version of the class.

Returns:

return the version

getVmName

public static java.lang.String getVmName()

Returns the name of the running VM

Returns:

The VM name or a blank String on error

hexString2byteArray

public static byte[] hexString2byteArray(java.lang.String input)

Converts a hex string into a byte array.

Parameters:

input - the hex String to be converted

Returns:

returns the byte array

hexString2String

public static java.lang.String hexString2String(java.lang.String input)

Converts a hex string into a character String.

Parameters:

input - the hex String to be converted

Returns:

returns the character String

indexOf

public static int indexOf(java.lang.String[] array,
                          java.lang.String str)

Gets the index of a String in a String array

Parameters:

array - The String array

str - The string to be found

Returns:

Returns the first index or -1 if not found

parseDouble

public static double parseDouble(java.lang.String s,
                                 double defaultValue)

parseInt

public static int parseInt(java.lang.String s,
                           int defaultValue)

Calls parseInt(s,10,defaultValue)

Parameters:

s - String containing the value

defaultValue - The int value returned on error

Returns:

returns the conveted int value or the defaultValue

parseInt

public static int parseInt(java.lang.String s,
                           int radix,
                           int defaultValue)

Converts a String to an int value.

Parameters:

s - String containing the value

radix - The radix to be used

defaultValue - The int value returned on error

Returns:

returns the converted int value or the defaultValue

parseLong

public static long parseLong(java.lang.String s,
                             long defaultValue)

Converts a String to a long value.

Parameters:

s - String containing the value

defaultValue - The long value returned on error

Returns:

returns the converted long value or the defaultValue

readIntLE

public static int readIntLE(byte[] source,
                            int offset,
                            int numBytes)

This reads an integer value from a byte array with the specified number of bytes. It assumes Little Endian encoding (like in Windows), meaning the low bytes come first.

Parameters:

source - The source of the bytes.

offset - The location in the source.

numBytes - The number of bytes to read in

Returns:

the integer value

readLineFromKeyboard

public static java.lang.String readLineFromKeyboard()

Reads a line from stdin

Returns:

returns the entered text or a blank String on error

searchByteArray

public static int searchByteArray(byte[] buffer,
                                  byte[] searchFor,
                                  int start)

Searches a byte array inside another byte array.

Parameters:

buffer - The byte array that will be searched.

searchFor - The byte array that we want to find.

start - The start index in the source data.

Returns:

The index where searchFor was found inside buffer, or -1 if it was not found.

string2hexString

public static java.lang.String string2hexString(java.lang.String input)

Converts a String into a hex String. string2hexString("Hallo") results in "48616c6c6f"

Parameters:

input - String to be converted

Returns:

returns the hex String

stringContains

public static boolean stringContains(java.lang.String bigString,
                                     java.lang.String smallString,
                                     boolean ignoreCase)

stringFill

public static java.lang.String stringFill(java.lang.String Source,
                                          boolean inFront,
                                          char fillChar,
                                          int newLength)

Fills a String with the supplied character until it reaches the supplied lenght.

Parameters:

Source - Source String

inFront - If set to true, inserts at the beginning, else at the end

fillChar - The character to fill up the String

newLength - The length to which the returned String should be filled up

Returns:

returns The new String

stringJoin

public static java.lang.String stringJoin(java.lang.String[] data,
                                          java.lang.String separator)

Creates a new string from the strings in data, adding the separator string after every string from data.

Parameters:

data - The string array holding the data.

separator - The String that is inserted after every array element of data .

Returns:

The newly created String.

stringReplace

public static java.lang.String stringReplace(java.lang.String s,
                                             java.lang.String f,
                                             java.lang.String r,
                                             boolean ignoreCase)

Replaces all instances of the String f within the String s with the String r.

This method has originally been developed by Bilbowolf.

Parameters:

s - The String that contains the data.

f - The String that we want to find.

r - The String that we want to use as replacement.

ignoreCase - If set to true, the f String will be searched while ignoring the (upper/lower) case

Returns:

The String s after the replace operation.

stringReplace

public static java.lang.String stringReplace(java.lang.String s,
                                             java.lang.String f,
                                             java.lang.String r)

Replaces all instances of the String f within the String s with the String r.

Calls stringReplace (s, f, r, false)

Parameters:

s - The String that contains the data.

f - The String that we want to find.

r - The String that we want to use as replacement.

Returns:

The String s after the replace operation.

stringSet

public static java.lang.String stringSet(char c,
                                         int length)

Creates a new string where all characters are the same.

Parameters:

c - The character to form the String.

length - The length the String should have.

Returns:

The newly created String.

stringSplit

public static java.lang.String[] stringSplit(java.lang.String data,
                                             java.lang.String separator)

Creates a new string array from the string in data, splitting when separator is found.

In contast to StringTokenizer, the separator is not a set of single characters, but one complete String. Also, if 2 (or more) separators follow each other immediately, stringSplit will recognize blank Strings between them.

Parameters:

data - The string holding the data.

separator - The String that marks where to split data.

Returns:

The newly created String array or null on error