/
validate.go
68 lines (55 loc) · 1.04 KB
/
validate.go
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package validate
import (
"reflect"
"strings"
)
var (
TagName = "validate"
)
func Struct(in interface{}) error {
value := reflect.ValueOf(in)
typ := value.Type()
if typ.Kind() == reflect.Ptr {
value = value.Elem()
typ = typ.Elem()
}
errs := FieldErrs{}
for i := value.NumField() - 1; i >= 0; i-- {
field := typ.Field(i)
v := value.Field(i).Interface()
validations := field.Tag.Get(TagName)
if validations == "" {
continue
}
fieldName := Name(field)
for _, name := range strings.Split(validations, ",") {
fn, ok := TagMap[name]
if !ok {
continue
}
if ok = fn(v); !ok {
fieldErr, ok := errs[fieldName]
if !ok {
fieldErr = FieldErr{}
}
fieldErr = append(fieldErr, name)
errs[fieldName] = fieldErr
}
}
}
if len(errs) > 0 {
return errs
}
return nil
}
func Name(in reflect.StructField) string {
tags := in.Tag.Get("json")
if tags == "" {
return in.Name
}
if strings.HasPrefix(tags, ",") {
return in.Name
}
segments := strings.Split(tags, ",")
return segments[0]
}