JM-WechatMini/utils/validator.go
2023-11-02 04:34:46 +08:00

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package utils
import (
"errors"
"reflect"
"regexp"
"strconv"
"strings"
)
type Rules map[string][]string
type RulesMap map[string]Rules
var CustomizeMap = make(map[string]Rules)
//@author: [piexlmax](https://github.com/piexlmax)
//@function: RegisterRule
//@description: 注册自定义规则方案建议在路由初始化层即注册
//@param: key string, rule Rules
//@return: err error
func RegisterRule(key string, rule Rules) (err error) {
if CustomizeMap[key] != nil {
return errors.New(key + "已注册,无法重复注册")
} else {
CustomizeMap[key] = rule
return nil
}
}
//@author: [piexlmax](https://github.com/piexlmax)
//@function: NotEmpty
//@description: 非空 不能为其对应类型的0值
//@return: string
func NotEmpty() string {
return "notEmpty"
}
// @author: [zooqkl](https://github.com/zooqkl)
// @function: RegexpMatch
// @description: 正则校验 校验输入项是否满足正则表达式
// @param: rule string
// @return: string
func RegexpMatch(rule string) string {
return "regexp=" + rule
}
//@author: [piexlmax](https://github.com/piexlmax)
//@function: Lt
//@description: 小于入参(<) 如果为string array Slice则为长度比较 如果是 int uint float 则为数值比较
//@param: mark string
//@return: string
func Lt(mark string) string {
return "lt=" + mark
}
//@author: [piexlmax](https://github.com/piexlmax)
//@function: Le
//@description: 小于等于入参(<=) 如果为string array Slice则为长度比较 如果是 int uint float 则为数值比较
//@param: mark string
//@return: string
func Le(mark string) string {
return "le=" + mark
}
//@author: [piexlmax](https://github.com/piexlmax)
//@function: Eq
//@description: 等于入参(==) 如果为string array Slice则为长度比较 如果是 int uint float 则为数值比较
//@param: mark string
//@return: string
func Eq(mark string) string {
return "eq=" + mark
}
//@author: [piexlmax](https://github.com/piexlmax)
//@function: Ne
//@description: 不等于入参(!=) 如果为string array Slice则为长度比较 如果是 int uint float 则为数值比较
//@param: mark string
//@return: string
func Ne(mark string) string {
return "ne=" + mark
}
//@author: [piexlmax](https://github.com/piexlmax)
//@function: Ge
//@description: 大于等于入参(>=) 如果为string array Slice则为长度比较 如果是 int uint float 则为数值比较
//@param: mark string
//@return: string
func Ge(mark string) string {
return "ge=" + mark
}
//@author: [piexlmax](https://github.com/piexlmax)
//@function: Gt
//@description: 大于入参(>) 如果为string array Slice则为长度比较 如果是 int uint float 则为数值比较
//@param: mark string
//@return: string
func Gt(mark string) string {
return "gt=" + mark
}
//
//@author: [piexlmax](https://github.com/piexlmax)
//@function: Verify
//@description: 校验方法
//@param: st interface{}, roleMap Rules(入参实例规则map)
//@return: err error
func Verify(st interface{}, roleMap Rules) (err error) {
compareMap := map[string]bool{
"lt": true,
"le": true,
"eq": true,
"ne": true,
"ge": true,
"gt": true,
}
typ := reflect.TypeOf(st)
val := reflect.ValueOf(st) // 获取reflect.Type类型
kd := val.Kind() // 获取到st对应的类别
if kd != reflect.Struct {
return errors.New("expect struct")
}
num := val.NumField()
// 遍历结构体的所有字段
for i := 0; i < num; i++ {
tagVal := typ.Field(i)
val := val.Field(i)
if tagVal.Type.Kind() == reflect.Struct {
if err = Verify(val.Interface(), roleMap); err != nil {
return err
}
}
if len(roleMap[tagVal.Name]) > 0 {
for _, v := range roleMap[tagVal.Name] {
switch {
case v == "notEmpty":
if isBlank(val) {
return errors.New(tagVal.Name + "值不能为空")
}
case strings.Split(v, "=")[0] == "regexp":
if !regexpMatch(strings.Split(v, "=")[1], val.String()) {
return errors.New(tagVal.Name + "格式校验不通过")
}
case compareMap[strings.Split(v, "=")[0]]:
if !compareVerify(val, v) {
return errors.New(tagVal.Name + "长度或值不在合法范围," + v)
}
}
}
}
}
return nil
}
//@author: [piexlmax](https://github.com/piexlmax)
//@function: compareVerify
//@description: 长度和数字的校验方法 根据类型自动校验
//@param: value reflect.Value, VerifyStr string
//@return: bool
func compareVerify(value reflect.Value, VerifyStr string) bool {
switch value.Kind() {
case reflect.String:
return compare(len([]rune(value.String())), VerifyStr)
case reflect.Slice, reflect.Array:
return compare(value.Len(), VerifyStr)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return compare(value.Uint(), VerifyStr)
case reflect.Float32, reflect.Float64:
return compare(value.Float(), VerifyStr)
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return compare(value.Int(), VerifyStr)
default:
return false
}
}
//@author: [piexlmax](https://github.com/piexlmax)
//@function: isBlank
//@description: 非空校验
//@param: value reflect.Value
//@return: bool
func isBlank(value reflect.Value) bool {
switch value.Kind() {
case reflect.String, reflect.Slice:
return value.Len() == 0
case reflect.Bool:
return !value.Bool()
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return value.Int() == 0
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return value.Uint() == 0
case reflect.Float32, reflect.Float64:
return value.Float() == 0
case reflect.Interface, reflect.Ptr:
return value.IsNil()
}
return reflect.DeepEqual(value.Interface(), reflect.Zero(value.Type()).Interface())
}
//@author: [piexlmax](https://github.com/piexlmax)
//@function: compare
//@description: 比较函数
//@param: value interface{}, VerifyStr string
//@return: bool
func compare(value interface{}, VerifyStr string) bool {
VerifyStrArr := strings.Split(VerifyStr, "=")
val := reflect.ValueOf(value)
switch val.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
VInt, VErr := strconv.ParseInt(VerifyStrArr[1], 10, 64)
if VErr != nil {
return false
}
switch {
case VerifyStrArr[0] == "lt":
return val.Int() < VInt
case VerifyStrArr[0] == "le":
return val.Int() <= VInt
case VerifyStrArr[0] == "eq":
return val.Int() == VInt
case VerifyStrArr[0] == "ne":
return val.Int() != VInt
case VerifyStrArr[0] == "ge":
return val.Int() >= VInt
case VerifyStrArr[0] == "gt":
return val.Int() > VInt
default:
return false
}
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
VInt, VErr := strconv.Atoi(VerifyStrArr[1])
if VErr != nil {
return false
}
switch {
case VerifyStrArr[0] == "lt":
return val.Uint() < uint64(VInt)
case VerifyStrArr[0] == "le":
return val.Uint() <= uint64(VInt)
case VerifyStrArr[0] == "eq":
return val.Uint() == uint64(VInt)
case VerifyStrArr[0] == "ne":
return val.Uint() != uint64(VInt)
case VerifyStrArr[0] == "ge":
return val.Uint() >= uint64(VInt)
case VerifyStrArr[0] == "gt":
return val.Uint() > uint64(VInt)
default:
return false
}
case reflect.Float32, reflect.Float64:
VFloat, VErr := strconv.ParseFloat(VerifyStrArr[1], 64)
if VErr != nil {
return false
}
switch {
case VerifyStrArr[0] == "lt":
return val.Float() < VFloat
case VerifyStrArr[0] == "le":
return val.Float() <= VFloat
case VerifyStrArr[0] == "eq":
return val.Float() == VFloat
case VerifyStrArr[0] == "ne":
return val.Float() != VFloat
case VerifyStrArr[0] == "ge":
return val.Float() >= VFloat
case VerifyStrArr[0] == "gt":
return val.Float() > VFloat
default:
return false
}
default:
return false
}
}
func regexpMatch(rule, matchStr string) bool {
return regexp.MustCompile(rule).MatchString(matchStr)
}