Function Camel2Snake

util/string/string.go:19–38

驼峰转为蛇形。例如userNameAbd转为user_name_abd User user

(s string)

// 驼峰转为蛇形。例如userNameAbd转为user_name_abd   User   user
func Camel2Snake(s string) string {
	if len(s) == 0 {
		return ""
	}
	t := make([]byte, 0, len(s)+4)
	if IsASCIIUpper(s[0]) { //首字母为大写时，转为小写
		t = append(t, UpperLowerExchange(s[0]))
	} else {
		t = append(t, s[0])
	}
	for i := 1; i < len(s); i++ {
		c := s[i]
		if IsASCIIUpper(c) { //碰到大写，则转为小写，并在前面加个_
			t = append(t, '_', UpperLowerExchange(c))
		} else {
			t = append(t, c)
		}
	}
	return string(t)
}

var letterRunes = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")