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