de.bb.util

Class Misc

java.lang.Object

de.bb.util.Misc

public class Misc
extends java.lang.Object

Provides some useful functions to deal with byte arrays.

Constructor Summary

Constructors

Constructor and Description
Misc()

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.String	bytes2Hex(byte[] b) Convert a byte array into a hex string.
static void	dump(java.io.OutputStream out, byte[] b) helper fx to dump to stdout.
static void	dump(java.io.PrintWriter ps, java.lang.String s, byte[] bb, int offset, int len) Dump a byte array as hex values.
static void	dump(java.lang.String title, java.io.OutputStream out, byte[] b) helper fx to dump to stdout.
static void	dump(java.lang.String title, java.io.OutputStream out, byte[] b, int len) helper fx to dump to stdout.
static void	dump(java.lang.String title, java.io.OutputStream out, byte[] b, int offset, int len) helper fx to dump to stdout.
static boolean	equals(byte[] a, byte[] b) Compares one byte array with another byte array.
static boolean	equals(byte[] a, int aOff, byte[] b, int bOff, int len) Compares one segment of a byte array with a segment of a 2nd byte array.
static boolean	equals(int[] a, int[] b)
static boolean	equals(int[] a, int aOff, int[] b, int bOff, int len)
static byte[]	hex2Bytes(java.lang.String s) Interpret the String as hex values and convert it to a byte array.
static java.lang.String	replaceAll(java.lang.String string, char c, char d) Helper method to replace all occurencies of a character to a different character.

Methods inherited from class java.lang.Object

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

Constructor Detail

Misc

public Misc()

Method Detail

equals

public static final boolean equals(byte[] a,
             int aOff,
             byte[] b,
             int bOff,
             int len)

Compares one segment of a byte array with a segment of a 2nd byte array.

Parameters:

a - first byte array

aOff - offset into first byte array

b - second byte array

bOff - offset into second byte array

len - length of the compared segments

Returns:

true if the segments are equal, otherwise false

equals

public static final boolean equals(int[] a,
             int aOff,
             int[] b,
             int bOff,
             int len)

equals

public static final boolean equals(byte[] a,
             byte[] b)

Compares one byte array with another byte array.

Parameters:

a - first byte array

b - second byte array

Returns:

true if the byte arrays are equal, otherwise false

equals

public static final boolean equals(int[] a,
             int[] b)

hex2Bytes

public static byte[] hex2Bytes(java.lang.String s)

Interpret the String as hex values and convert it to a byte array.

 "abcd" -> { (byte)0xab, (byte)0xcd }
 

Parameters:

s - the string

Returns:

a new allocated byte array containing the bytes

bytes2Hex

public static java.lang.String bytes2Hex(byte[] b)

Convert a byte array into a hex string.

 { (byte)0xab, (byte)0xcd } -> "abcd"
 

Parameters:

b - the byte array

Returns:

a new allocated string the bytes in hex

replaceAll

public static java.lang.String replaceAll(java.lang.String string,
                          char c,
                          char d)

Helper method to replace all occurencies of a character to a different character.

Parameters:

string - a string - not null

c - the character to be replaced

d - the replacement

Returns:

the string

dump

public static final void dump(java.io.PrintWriter ps,
        java.lang.String s,
        byte[] bb,
        int offset,
        int len)

Dump a byte array as hex values.

Parameters:

ps - the used PrintWriter.

s - a headline for each dumped block.

bb - the byte array to display

offset - offset into that array

len - the count of the dumped bytes.

dump

public static void dump(java.io.OutputStream out,
        byte[] b)

helper fx to dump to stdout.

Parameters:

out - - some outputStream

b - - the bytes to dump

dump

public static void dump(java.lang.String title,
        java.io.OutputStream out,
        byte[] b)

helper fx to dump to stdout.

Parameters:

title - title for the dump message

out - - some outputStream

b - - the bytes to dump

dump

public static void dump(java.lang.String title,
        java.io.OutputStream out,
        byte[] b,
        int len)

helper fx to dump to stdout.

Parameters:

title - title for the dump message

out - - some outputStream

b - - the bytes to dump

len - the length to dump

dump

public static void dump(java.lang.String title,
        java.io.OutputStream out,
        byte[] b,
        int offset,
        int len)

helper fx to dump to stdout.

Parameters:

title - title for the dump message

out - - some outputStream

b - - the bytes to dump

offset - offset into the data

len - the length to dump