Imports #
"errors"
"unicode/utf8"
"golang.org/x/text/transform"
"golang.org/x/text/unicode/bidi"
bidirule
Imports
Constants & Variables
ErrInvalid var #
ErrInvalid indicates a label is invalid according to the Bidi Rule.
var ErrInvalid = *ast.CallExprasciiTable var #
Precomputing the ASCII values decreases running time for the ASCII fast path by about 30%.
var asciiTable [128]bidi.PropertiesexclusiveRTL const #
[2.4] In an RTL label, if an EN is present, no AN may be present, and vice versa.
const exclusiveRTL = *ast.CallExprruleInitial const #
const ruleInitial ruleState = iotaruleInvalid const #
const ruleInvalidruleLTR const #
const ruleLTRruleLTRFinal const #
const ruleLTRFinalruleRTL const #
const ruleRTLruleRTLFinal const #
const ruleRTLFinaltransitions var #
var transitions = [...][2]ruleTransition{...}Type Aliases
ruleState type #
type ruleState uint8Structs
Transformer struct #
Transformer implements transform.Transform.
type Transformer struct {
state ruleState
hasRTL bool
seen uint16
}ruleTransition struct #
type ruleTransition struct {
next ruleState
mask uint16
}Functions
Direction function #
Direction reports the direction of the given label as defined by RFC 5893. The Bidi Rule does not have to be applied to labels of the category LeftToRight.
func Direction(b []byte) bidi.DirectionDirectionString function #
DirectionString reports the direction of the given label as defined by RFC 5893. The Bidi Rule does not have to be applied to labels of the category LeftToRight.
func DirectionString(s string) bidi.DirectionNew function #
New returns a Transformer that verifies that input adheres to the Bidi Rule.
func New() *TransformerReset method #
Reset implements transform.Transformer.
func (t *Transformer) Reset()Span method #
Span returns the first n bytes of src that conform to the Bidi rule.
func (t *Transformer) Span(src []byte, atEOF bool) (n int, err error)Transform method #
Transform implements transform.Transformer. This Transformer has state and needs to be reset between uses.
func (t *Transformer) Transform(dst []byte, src []byte, atEOF bool) (nDst int, nSrc int, err error)Valid function #
Valid reports whether b conforms to the BiDi rule.
func Valid(b []byte) boolValidString function #
ValidString reports whether s conforms to the BiDi rule.
func ValidString(s string) booladvance method #
func (t *Transformer) advance(s []byte) (n int, ok bool)advanceString method #
func (t *Transformer) advanceString(s string) (n int, ok bool)init function #
func init()isFinal method #
func (t *Transformer) isFinal() boolisFinal method #
func (t *Transformer) isFinal() boolisRTL method #
A rule can only be violated for "Bidi Domain names", meaning if one of the following categories has been observed.
func (t *Transformer) isRTL() boolGenerated with Arrow