org.onlab.util

Class HexString

java.lang.Object

org.onlab.util.HexString

public final class HexString
extends Object

Method Summary

Modifier and Type	Method and Description
static byte[]	fromHexString(String values) Convert a colon-separated hex string to byte array.
static byte[]	fromHexString(String values, String separator) Convert a hex-string with arbitrary separator to byte array.
static String	toHexString(byte[] bytes) Convert a byte array to a colon-separated hex string.
static String	toHexString(byte[] bytes, String separator) Convert a byte array to a hex string separated by given separator.
static String	toHexString(long val) Convert a long number to colon-separated hex string.
static String	toHexString(long val, int padTo) Convert a long number to colon-separated hex string.
static long	toLong(String value) Convert a colon-separated hex string to long.

Methods inherited from class java.lang.Object

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

Method Detail

toHexString

public static String toHexString(byte[] bytes)

Convert a byte array to a colon-separated hex string.

Parameters:

bytes - byte array to be converted

Returns:

converted colon-separated hex string, e.g. "0f:ca:fe:de:ad:be:ef", or "(null)" if given byte array is null

toHexString

public static String toHexString(byte[] bytes,
                                 String separator)

Convert a byte array to a hex string separated by given separator.

Parameters:

bytes - byte array to be converted

separator - the string use to separate each byte

Returns:

converted hex string, or "(null)" if given byte array is null

toHexString

public static String toHexString(long val,
                                 int padTo)

Convert a long number to colon-separated hex string. Prepend zero padding until given length.

Parameters:

val - long number to be converted

padTo - prepend zeros until this length

Returns:

converted colon-separated hex string, e.g. "0f:ca:fe:de:ad:be:ef"

toHexString

public static String toHexString(long val)

Convert a long number to colon-separated hex string. Prepend zero padding until 8 bytes.

Parameters:

val - long number to be converted

Returns:

converted colon-separated hex string, e.g. "0f:ca:fe:de:ad:be:ef"

fromHexString

public static byte[] fromHexString(String values)

Convert a colon-separated hex string to byte array.

Parameters:

values - colon-separated hex string to be converted, e.g. "0f:ca:fe:de:ad:be:ef"

Returns:

converted byte array

Throws:

NumberFormatException - if input hex string cannot be parsed

fromHexString

public static byte[] fromHexString(String values,
                                   String separator)

Convert a hex-string with arbitrary separator to byte array. If separator is the empty string or null, then no separator will be considered.

Parameters:

values - hex string to be converted

separator - regex for separator

Returns:

converted byte array

Throws:

NumberFormatException - if input hex string cannot be parsed

toLong

public static long toLong(String value)

Convert a colon-separated hex string to long.

Parameters:

value - colon-separated hex string to be converted, e.g. "00:0f:ca:fe:de:ad:be:ef"

Returns:

converted long number

Throws:

NumberFormatException - if input hex string cannot be parsed