niki/vendor/github.com/go-ozzo/ozzo-validation/multipleof.go

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2024-02-18 10:42:21 +00:00
package validation
import (
"errors"
"fmt"
"reflect"
)
func MultipleOf(threshold interface{}) *multipleOfRule {
return &multipleOfRule{
threshold,
fmt.Sprintf("must be multiple of %v", threshold),
}
}
type multipleOfRule struct {
threshold interface{}
message string
}
// Error sets the error message for the rule.
func (r *multipleOfRule) Error(message string) *multipleOfRule {
r.message = message
return r
}
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func (r *multipleOfRule) Validate(value interface{}) error {
rv := reflect.ValueOf(r.threshold)
switch rv.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
v, err := ToInt(value)
if err != nil {
return err
}
if v%rv.Int() == 0 {
return nil
}
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
v, err := ToUint(value)
if err != nil {
return err
}
if v%rv.Uint() == 0 {
return nil
}
default:
return fmt.Errorf("type not supported: %v", rv.Type())
}
return errors.New(r.message)
}