package conf type Conf struct { Listen string `yaml:"listen"` DB string `yaml:"db"` Domain string `yaml:"domain"` } func SlugFromDomain(domain string) string { a := []byte(domain) for i := range a { switch { case a[i] == '-': // skip case a[i] >= 'A' && a[i] <= 'Z': a[i] += 32 case a[i] >= 'a' && a[i] <= 'z': // skip case a[i] >= '0' && a[i] <= '9': // skip default: a[i] = '-' } } return string(a) }