109 lines
2.4 KiB
Go
109 lines
2.4 KiB
Go
package valiwork
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import (
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// stdlib
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"log"
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// local
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"go.dev.pztrn.name/valiwork/validators"
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)
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var (
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registeredValidators map[string]validators.ValidatorFunc
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)
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// nolint
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func init() {
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initializeValidatorsStorage()
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}
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func initializeValidatorsStorage() {
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registeredValidators = make(map[string]validators.ValidatorFunc)
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}
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// RegisterValidator registers validation function for later calling.
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func RegisterValidator(validatorName string, validator validators.ValidatorFunc) error {
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if DEBUG {
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log.Println("Trying to register validator: '" + validatorName + "'...")
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}
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_, found := registeredValidators[validatorName]
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if found {
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if DEBUG {
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log.Println("Validator already registered!")
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}
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return ErrValidatorAlreadyRegistered
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}
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registeredValidators[validatorName] = validator
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return nil
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}
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// Validate launches validation function and returns it's result to
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// caller. Optional might be used for passing additional options to
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// validators.
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func Validate(thing interface{}, validatorName string, optional ...interface{}) []interface{} {
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var errs []interface{}
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validator, found := registeredValidators[validatorName]
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if !found {
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errs = append(errs, ErrValidatorNotRegistered)
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return errs
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}
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errs1 := validator(thing, optional...)
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if len(errs1) > 0 {
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errs = append(errs, errs1...)
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}
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return errs
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}
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// ValidateMany launches many validators using one-line-call.
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// Optional might be used for passing parameters to validators, wher
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// key is a validator name and value (which is []interface{})
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// is a slice of parameters.
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func ValidateMany(thing interface{}, validatorNames []string, optional map[string][]interface{}) []interface{} {
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var errs []interface{}
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for _, validator := range validatorNames {
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validatorParams, found := optional[validator]
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if !found {
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validatorParams = make([]interface{}, 0)
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}
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errs1 := Validate(thing, validator, validatorParams...)
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if len(errs1) > 0 {
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errs = append(errs, errs1...)
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}
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}
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return errs
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}
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// UnregisterValidator removes registered validator from list of known
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// validators.
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func UnregisterValidator(validatorName string) error {
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if DEBUG {
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log.Println("Trying to unregister validator '" + validatorName + "'...")
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}
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_, found := registeredValidators[validatorName]
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if !found {
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if DEBUG {
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log.Println("Validator wasn't registered!")
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}
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return ErrValidatorNotRegistered
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}
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delete(registeredValidators, validatorName)
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return nil
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}
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