1 // Package sanitized_anchor_name provides a func to create sanitized anchor names.

     2 //

     3 // Its logic can be reused by multiple packages to create interoperable anchor names

     4 // and links to those anchors.

     5 //

     6 // At this time, it does not try to ensure that generated anchor names

     7 // are unique, that responsibility falls on the caller.

     8 package sanitized_anchor_name // import "github.com/shurcooL/sanitized_anchor_name"

     9 

    10 import "unicode"

    11 

    12 // Create returns a sanitized anchor name for the given text.

    13 func Create(text string) string {

    14 	var anchorName []rune

    15 	var futureDash = false

    16 	for _, r := range text {

    17 		switch {

    18 		case unicode.IsLetter(r) || unicode.IsNumber(r):

    19 			if futureDash && len(anchorName) > 0 {

    20 				anchorName = append(anchorName, '-')

    21 			}

    22 			futureDash = false

    23 			anchorName = append(anchorName, unicode.ToLower(r))

    24 		default:

    25 			futureDash = true

    26 		}

    27 	}

    28 	return string(anchorName)

    29 }