lyrics

lyrics
git clone git://brookjeynes.dev/bjeynes/lyrics.git
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strings.go (702B)

      1 package domain
      2 
      3 import (
      4 	"strings"
      5 	"unicode"
      6 
      7 	"golang.org/x/text/runes"
      8 	"golang.org/x/text/transform"
      9 	"golang.org/x/text/unicode/norm"
     10 )
     11 
     12 func Slug(title string) string {
     13 	// strip apostrophes before normalizing
     14 	s := strings.ReplaceAll(title, "'", "")
     15 
     16 	// unicode normalize: NFD decompose, strip non-spacing marks, recompose
     17 	t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
     18 	s, _, _ = transform.String(t, s)
     19 
     20 	s = strings.ToLower(s)
     21 	s = strings.Map(func(r rune) rune {
     22 		if r >= 'a' && r <= 'z' || r >= '0' && r <= '9' {
     23 			return r
     24 		}
     25 		return '-'
     26 	}, s)
     27 
     28 	for strings.Contains(s, "--") {
     29 		s = strings.ReplaceAll(s, "--", "-")
     30 	}
     31 
     32 	return strings.Trim(s, "-")
     33 }