ascii

Documentation

Overview

Package ascii provide a library for working with ASCII characters.

Index

• Constants
• Variables
• func IsAlnum(b byte) bool
• func IsAlpha(b byte) bool
• func IsDigit(b byte) bool
• func IsDigits(data []byte) bool
• func IsHex(b byte) bool
• func IsSpace(b byte) bool
• func Random(source []byte, n int) []byte
• func ToLower(data *[]byte)
• func ToUpper(data *[]byte)

Examples

• ToLower
• ToUpper

Constants

const (
	// Letters contains list of lower and upper case characters in ASCII.
	Letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"

	// LettersNumber contains list of lower and upper case characters in
	// ASCII along with numbers.
	LettersNumber = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890"

	// HexaLETTERS contains list of hexadecimal characters in upper cases.
	HexaLETTERS = "0123456789ABCDEF"
	// HexaLetters contains list of hexadecimal characters in lower and
	// upper cases.
	HexaLetters = "0123456789abcedfABCDEF"
	// Hexaletters contains list of hexadecimal characters in lower cases.
	Hexaletters = "0123456789abcedf"
)

Variables

var (
	// Spaces contains list of white spaces in ASCII.
	Spaces = []byte{'\t', '\n', '\v', '\f', '\r', ' '}
)

Functions

func IsAlnum

func IsAlnum(b byte) bool

IsAlnum will return true if byte is ASCII alphanumeric character, otherwise it will return false.

func IsAlpha

func IsAlpha(b byte) bool

IsAlpha will return true if byte is ASCII alphabet character, otherwise it will return false.

func IsDigit

func IsDigit(b byte) bool

IsDigit will return true if byte is ASCII digit, otherwise it will return false.

func IsDigits

func IsDigits(data []byte) bool

IsDigits will return true if all bytes are ASCII digit, otherwise it will return false.

func IsHex

func IsHex(b byte) bool

IsHex will return true if byte is hexadecimal number, otherwise it will return false.

func IsSpace

func IsSpace(b byte) bool

IsSpace will return true if byte is ASCII white spaces character, otherwise it will return false.

func Random

func Random(source []byte, n int) []byte

Random generate random sequence of value from source with fixed length.

This function assume that random generator has been seeded.

func ToLower

func ToLower(data *[]byte)

ToLower convert slice of ASCII characters to lower cases, in places.

Example

in := []byte("@ABCDEFGhijklmnoPQRSTUVWxyz{12345678")

ToLower(&in)

fmt.Println(string(in))

Output:

@abcdefghijklmnopqrstuvwxyz{12345678

func ToUpper

func ToUpper(data *[]byte)

ToUpper convert slice of ASCII characters to upper cases, in places.

Example

in := []byte("@ABCDEFGhijklmnoPQRSTUVWxyz{12345678")

ToUpper(&in)

fmt.Println(string(in))

Output:

@ABCDEFGHIJKLMNOPQRSTUVWXYZ{12345678