golang 大驼峰转换工具

大驼峰转换工具

法则
基本满足大驼峰命名法则 首字母大写 “_” 忽略后大写

大驼峰到网络标准json串自动转换

带有特殊字符特殊处理：如下

"ACL", "API", "ASCII", "CPU", "CSS", "DNS", "EOF", "GUID", "HTML", "HTTP", "HTTPS", "ID", "IP", "JSON", "LHS", "QPS", "RAM", "RHS", "RPC", "SLA", "SMTP", "SQL", "SSH", "TCP", "TLS", "TTL", "UDP", "UI", "UID", "UUID", "URI", "URL", "UTF8", "VM", "XML", "XMPP", "XSRF", "XSS"

以下采用golang实现

1. 数据初始化：

// Copied from golint
var commonInitialisms = []string{"ACL", "API", "ASCII", "CPU", "CSS", "DNS", "EOF", "GUID", "HTML", "HTTP", "HTTPS", "ID", "IP", "JSON", "LHS", "QPS", "RAM", "RHS", "RPC", "SLA", "SMTP", "SQL", "SSH", "TCP", "TLS", "TTL", "UDP", "UI", "UID", "UUID", "URI", "URL", "UTF8", "VM", "XML", "XMPP", "XSRF", "XSS"}
var commonInitialismsReplacer *strings.Replacer
var uncommonInitialismsReplacer *strings.Replacer

func init() {
	var commonInitialismsForReplacer []string
	var uncommonInitialismsForReplacer []string
	for _, initialism := range commonInitialisms {
		commonInitialismsForReplacer = append(commonInitialismsForReplacer, initialism, strings.Title(strings.ToLower(initialism)))
		uncommonInitialismsForReplacer = append(uncommonInitialismsForReplacer, strings.Title(strings.ToLower(initialism)), initialism)
	}
	commonInitialismsReplacer = strings.NewReplacer(commonInitialismsForReplacer...)
	uncommonInitialismsReplacer = strings.NewReplacer(uncommonInitialismsForReplacer...)
}

2. 转换大驼峰函数：

/*
	转换为大驼峰命名法则
	首字母大写，“_” 忽略后大写
*/
func Marshal(name string) string {
	if name == "" {
		return ""
	}

	temp := strings.Split(name, "_")
	var s string
	for _, v := range temp {
		vv := []rune(v)
		if len(vv) > 0 {
			if bool(vv[0] >= 'a' && vv[0] <= 'z') { //首字母大写
				vv[0] -= 32
			}
			s += string(vv)
		}
	}

	s = uncommonInitialismsReplacer.Replace(s)
	//smap.Set(name, s)
	return s
}

3. 回退函数

/*
  回退网络模式
*/
func UnMarshal(name string) string {
	const (
		lower = false
		upper = true
	)

	if name == "" {
		return ""
	}

	var (
		value                                    = commonInitialismsReplacer.Replace(name)
		buf                                      = bytes.NewBufferString("")
		lastCase, currCase, nextCase, nextNumber bool
	)

	for i, v := range value[:len(value)-1] {
		nextCase = bool(value[i+1] >= 'A' && value[i+1] <= 'Z')
		nextNumber = bool(value[i+1] >= '0' && value[i+1] <= '9')

		if i > 0 {
			if currCase == upper {
				if lastCase == upper && (nextCase == upper || nextNumber == upper) {
					buf.WriteRune(v)
				} else {
					if value[i-1] != '_' && value[i+1] != '_' {
						buf.WriteRune('_')
					}
					buf.WriteRune(v)
				}
			} else {
				buf.WriteRune(v)
				if i == len(value)-2 && (nextCase == upper && nextNumber == lower) {
					buf.WriteRune('_')
				}
			}
		} else {
			currCase = upper
			buf.WriteRune(v)
		}
		lastCase = currCase
		currCase = nextCase
	}

	buf.WriteByte(value[len(value)-1])

	s := strings.ToLower(buf.String())
	return s
}

4. 测试：

func Test_cache(t *testing.T) {
	SS := "OauthIDAPI"

	tmp0 := UnMarshal(SS)
	fmt.Println(tmp0)
	tmp1 := Marshal(tmp0)
	fmt.Println(tmp1)

	if SS != tmp1 {
		fmt.Println("false.")
	}
}

输入:
OauthIDAPI
输出：
oauth_id_api
OauthIDAPI

5:传送门：
github