2024-03-08 11:33:54 +08:00
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// Package define ...
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//
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// Description : define ...
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 2024-03-08 11:04
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package define
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import (
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"fmt"
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"git.zhangdeman.cn/zhangdeman/util"
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"git.zhangdeman.cn/zhangdeman/wrapper"
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"reflect"
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"strings"
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2024-03-08 11:33:54 +08:00
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)
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// DiffOption 做数据对比时的选项
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 11:12 2024/3/8
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type DiffOption struct {
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StrictMode bool `json:"strict_mode"` // 采用严格模式: 1 != 1.0 , 采用非严格模式 1 == 1.0
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AllowStringNumber bool `json:"allow_string_number"` // 是否允许字符串数字, 在非严格模式下, 若允许, 则 1 == "1" , 不允许, 则 1 != "1"
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IgnoreNotFoundField bool `json:"ignore_not_found_field"` // 忽略不存在的字段
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IgnoreEmptyString bool `json:"ignore_empty_string"` // 忽略空字符串, 若输入值为空字符串, 则不做比较, 认为两个值相同
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IgnoreZeroNumber bool `json:"ignore_zero_number"` // 忽略置为0的数字, 若输入的数据为数字类型, 则不做比较, 认为两个值相同
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IgnoreNil bool `json:"ignore_nil"` // 忽略 nil 值, 若输入值为NIL , 则不做比较, 认为两个值相同
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CustomDiffFuncTable map[string]CustomDiffFunc `json:"-"` // 外部自定义的字段是否相同的比较函数, 会优先使用外部输入的比较函数
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}
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// NewDiffOption ...
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 12:06 2024/3/8
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func NewDiffOption() *DiffOption {
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return &DiffOption{
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StrictMode: false,
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IgnoreNotFoundField: false,
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IgnoreEmptyString: false,
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IgnoreZeroNumber: false,
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IgnoreNil: false,
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CustomDiffFuncTable: make(map[string]CustomDiffFunc),
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}
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}
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// CustomDiffFunc 自定义字段对比方法
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//
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// 输入分别如下:
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//
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// field : 要对比的字段
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//
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// inputVal : 输入的原始数据
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//
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// storageVal : 当前存储的数据
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//
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// option : 对比时的额外选项
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 11:06 2024/3/8
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type CustomDiffFunc func(field string, inputVal wrapper.Map, storageVal wrapper.Map, option *DiffOption) *DiffResult
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// DiffResult 对比结果
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 11:10 2024/3/8
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type DiffResult struct {
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Field string `json:"field"` // 字段名
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OldVal any `json:"old_val"` // 当前field在storageVal中的值
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NewVal any `json:"new_val"` // 当前field在inputVal中的值
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IsSame bool `json:"is_same"` // 两个值是否相同
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DiffReason string `json:"diff_reason"` // 两个值不同的原因
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Err error `json:"err"` // 对比过程中是否出现异常
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}
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const (
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DiffReasonTypeNotMatch = "TYPE_NOT_MATCH" // 类型不匹配
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DiffReasonValueNotMatch = "VALUE_NOT_MATCH" // 数据值不匹配
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DiffReasonInputFieldNotFound = "INPUT_FIELD_NOT_FOUND" // 输入数据中不存在相关字段
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DiffReasonStorageFieldNotFound = "STORAGE_FIELD_NOT_FOUND" // 存储数据中不存在相关字段
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)
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var (
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// 当前仅支持基础类型的比较,不支持slice/map/struct等复杂类型的比较
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supportValueTypeTable = map[reflect.Kind]any{
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reflect.Bool: true,
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reflect.Int: true,
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reflect.Int8: true,
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reflect.Int16: true,
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reflect.Int32: true,
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reflect.Int64: true,
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reflect.Uint: true,
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reflect.Uint8: true,
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reflect.Uint16: true,
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reflect.Uint32: true,
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reflect.Uint64: true,
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reflect.Float32: true,
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reflect.Float64: true,
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reflect.String: true,
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// reflect.Ptr: true,
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}
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)
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// IsSupportValueType ...
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//
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// Author : go_developer@163.com<白茶清欢>
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//
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// Date : 11:23 2024/3/8
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func IsSupportValueType(kind reflect.Kind) bool {
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if _, exist := supportValueTypeTable[kind]; exist {
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return true
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}
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return false
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}
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// DefaultDiffFunc 默认的diff函数
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//
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// Author : zhangdeman001@ke.com<张德满>
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//
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// Date : 12:05 2024/3/8
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func DefaultDiffFunc(field string, inputVal wrapper.Map, storageVal wrapper.Map, option *DiffOption) *DiffResult {
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if nil == option {
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option = NewDiffOption()
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}
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result := &DiffResult{
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Field: field,
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OldVal: nil,
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NewVal: nil,
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IsSame: true,
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DiffReason: "",
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Err: nil,
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}
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var (
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inputFieldVal any
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inputFieldValExist bool
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storageFieldVal any
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storageFieldValExist bool
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)
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inputFieldVal, inputFieldValExist = inputVal.Get(field)
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storageFieldVal, storageFieldValExist = storageVal.Get(field)
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// 字段在输入数据和存储数据中均不存在
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if !inputFieldValExist && !storageFieldValExist {
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// 输入和存储都没这个字段
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return result
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}
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// 判断输入字段是否存在
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if !inputFieldValExist {
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if option.IgnoreNotFoundField {
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// 忽略不存在的字段
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return result
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}
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// 由于前置逻辑保证了, 输入不存在相关字段, 则现存数据一定存在相关字段
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result.IsSame = false
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result.DiffReason = DiffReasonInputFieldNotFound
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result.OldVal = storageFieldVal
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return result
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}
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// 判断存储字段是否存在
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if !storageFieldValExist {
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result.IsSame = false
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result.DiffReason = DiffReasonStorageFieldNotFound
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result.NewVal = inputFieldVal
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return result
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}
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// 校验类型
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inputFieldValType := reflect.TypeOf(inputFieldVal)
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storageFieldValType := reflect.TypeOf(storageFieldVal)
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if inputFieldValType.Kind() == reflect.Ptr {
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inputReflect := reflect.ValueOf(inputFieldVal)
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inputFieldValType = inputReflect.Type()
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inputFieldVal = inputReflect.Interface()
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}
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if storageFieldValType.Kind() == reflect.Ptr {
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storageReflect := reflect.ValueOf(storageFieldValType)
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storageFieldValType = storageReflect.Type()
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storageFieldVal = storageReflect.Interface()
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}
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result.NewVal = inputFieldVal
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result.OldVal = storageFieldVal
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if inputFieldValType.Kind() != storageFieldValType.Kind() && option.StrictMode {
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// 严格模式下, 类型不相同
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result.IsSame = false
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result.DiffReason = DiffReasonTypeNotMatch
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return result
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}
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// 类型相同, 或者非严格模式下不校验类型
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if option.StrictMode {
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// 严格模式
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if inputFieldVal != storageFieldVal {
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result.IsSame = false
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result.DiffReason = DiffReasonValueNotMatch
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return result
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}
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// return result
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}
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// 非严格模式
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// 存储值尝试转 float64
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inputValStr := fmt.Sprintf("%v", inputFieldVal)
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storageValStr := fmt.Sprintf("%v", storageFieldVal)
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if inputValStr == storageValStr {
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return result
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}
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if option.AllowStringNumber {
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// 允许字符串数字
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var (
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storageFloat64 float64
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inputFloat64 float64
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)
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if err := util.ConvertAssign(&storageFloat64, storageValStr); nil == err {
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if err := util.ConvertAssign(&inputFloat64, inputValStr); nil == err {
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if storageFloat64 == inputFloat64 {
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return result
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}
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}
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}
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}
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// 浮点型数字. 去小数部分最右侧的0
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if inputFieldValType.Kind() == reflect.Float64 || inputFieldValType.Kind() == reflect.Float32 {
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inputValStrArr := strings.Split(inputValStr, ".")
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if len(inputValStrArr) == 2 {
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inputValStrArr[1] = strings.TrimRight(inputValStrArr[1], "0")
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inputValStr = strings.Join(inputValStrArr, ".")
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}
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}
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if storageFieldValType.Kind() == reflect.Float64 || storageFieldValType.Kind() == reflect.Float32 {
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storageValStrArr := strings.Split(storageValStr, ".")
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if len(storageValStrArr) == 2 {
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storageValStrArr[1] = strings.TrimRight(storageValStrArr[1], "0")
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storageValStr = strings.Join(storageValStrArr, ".")
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}
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}
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if inputValStr != storageValStr {
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result.IsSame = false
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result.DiffReason = DiffReasonValueNotMatch
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return result
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}
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return result
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}
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