runewidth

Documentation

Index

• Variables
• func CreateLUT()
• func IsEastAsian() bool
• func StringWidth(s string) (width int)
• type Condition
  • func NewCondition() *Condition
  • func (c *Condition) CreateLUT()
  • func (c *Condition) RuneWidth(r rune) int
  • func (c *Condition) StringWidth(s string) (width int)

Variables

var (
	// EastAsianWidth will be set true if the current locale is CJK
	EastAsianWidth bool

	// StrictEmojiNeutral should be set false if handle broken fonts
	StrictEmojiNeutral bool = true

	// DefaultCondition is a condition in current locale
	DefaultCondition = &Condition{
		EastAsianWidth:     false,
		StrictEmojiNeutral: true,
	}
)

Functions

func CreateLUT

func CreateLUT()

CreateLUT will create an in-memory lookup table of 557055 bytes for faster operation. This should not be called concurrently with other operations.

func IsEastAsian

func IsEastAsian() bool

IsEastAsian return true if the current locale is CJK

func StringWidth

func StringWidth(s string) (width int)

StringWidth return width as you can see

Types

type Condition

type Condition struct {
	EastAsianWidth     bool
	StrictEmojiNeutral bool
	// contains filtered or unexported fields
}

Condition have flag EastAsianWidth whether the current locale is CJK or not.

func NewCondition

func NewCondition() *Condition

NewCondition return new instance of Condition which is current locale.

func (*Condition) CreateLUT

func (c *Condition) CreateLUT()

CreateLUT will create an in-memory lookup table of 557056 bytes for faster operation. This should not be called concurrently with other operations on c. If options in c is changed, CreateLUT should be called again.

func (*Condition) RuneWidth

func (c *Condition) RuneWidth(r rune) int

RuneWidth returns the number of cells in r. See http://www.unicode.org/reports/tr11/

func (*Condition) StringWidth

func (c *Condition) StringWidth(s string) (width int)

StringWidth return width as you can see