pro.fessional.mirana.bits

Class Bytes

java.lang.Object

pro.fessional.mirana.bits.Bytes

public class Bytes
extends Object

Since:

2019-06-24

Author:

trydofor

Constructor Summary

Constructors

Constructor and Description
Bytes()

Method Summary

Modifier and Type	Method and Description
static boolean	asHex(@Nullable String hex) check the hex string ignoring whitespace(0x20,\t\r\n) empty string means false always
static boolean	asHex(@Nullable String hex, int len) check the hex string ignoring whitespace(0x20,\t\r\n) and its length(0 do NOT check length) empty string means false always
static @NotNull String	hex(byte[] bytes)
static @NotNull String	hex(byte[] bytes, boolean upper) Write bytes to HEX string
static int	hex(OutputStream os, @Nullable String hex) Parse HEX string (can contain `0x20\t\r\n` case insensitive) into stream.
static byte[]	hex(@Nullable String hex) Parse HEX string (can contain `0x20\t\r\n` case insensitive) into bytes.
static void	hex(@NotNull StringBuilder sb, byte b, char[] table) get HEX by lookup table
static boolean	isHex(char c) check the hex char
static boolean	isHex(@Nullable String hex) check the hex string exactly.
static boolean	isHex(@Nullable String hex, int len) check the hex string and its length(0 do NOT check length) exactly.
static boolean	isPad(char c) check the padding white char (0x20,\t\r\n)
static int	unicode(char c, byte[] ob) Turning a char into java's unicode format.

Methods inherited from class java.lang.Object

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

Constructor Detail

Bytes

public Bytes()

Method Detail

isHex

public static boolean isHex(char c)

check the hex char

isPad

public static boolean isPad(char c)

check the padding white char (0x20,\t\r\n)

isHex

public static boolean isHex(@Nullable
                            @Nullable String hex)

check the hex string exactly. empty string means false always

isHex

public static boolean isHex(@Nullable
                            @Nullable String hex,
                            int len)

check the hex string and its length(0 do NOT check length) exactly. empty string means false always

asHex

public static boolean asHex(@Nullable
                            @Nullable String hex)

check the hex string ignoring whitespace(0x20,\t\r\n) empty string means false always

asHex

public static boolean asHex(@Nullable
                            @Nullable String hex,
                            int len)

check the hex string ignoring whitespace(0x20,\t\r\n) and its length(0 do NOT check length) empty string means false always

hex

public static byte[] hex(@Nullable
                         @Nullable String hex)

Parse HEX string (can contain `0x20\t\r\n` case insensitive) into bytes.

hex

public static int hex(@Param.Out
                      OutputStream os,
                      @Nullable
                      @Nullable String hex)

Parse HEX string (can contain `0x20\t\r\n` case insensitive) into stream.

Returns:

count of bytes wrote to the stream

hex

@NotNull
public static @NotNull String hex(byte[] bytes)

hex

@NotNull
public static @NotNull String hex(byte[] bytes,
                                           boolean upper)

Write bytes to HEX string

Parameters:

bytes - bytes

upper - whether all UPPER CASE hex char

hex

public static void hex(@NotNull
                       @NotNull StringBuilder sb,
                       byte b,
                       char[] table)

get HEX by lookup table

Parameters:

sb - buffer

b - byte

table - 0-F table

unicode

public static int unicode(char c,
                          byte[] ob)

 Turning a char into java's unicode format. eg. `我`(25105)->'我'
 Note, this method is not very efficient, for more options see StringEscapeUtil, ByteBuffer
 

Parameters:

c - the char

ob - byte arrays of length greater than or equal to 6

Returns:

byte wrote in the ob, ascii is 1, unicode is 6