ValidatorUtility.php

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<?php
namespace TYPO3\CMS\Form\Utility;

class ValidatorUtility implements \TYPO3\CMS\Core\SingletonInterface {

    protected $rules = array();

    protected $messages = array();

    protected $errors = array();

    public function __construct() {}

    protected function getPrefix() {
        return \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Form\\Request')->getPrefix();
    }

    public function createRule($class, $arguments = array()) {
        $class = strtolower((string) $class);
        $className = 'TYPO3\\CMS\\Form\\Validation\\' . ucfirst($class) . 'Validator';
        $rule = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance($className, $arguments);
        return $rule;
    }

    public function addRule($rule, $fieldName, $breakOnError = FALSE) {
        $prefix = $this->getPrefix();
        $this->rules[$prefix][] = array(
            'instance' => (object) $rule,
            'fieldName' => (string) $fieldName,
            'breakOnError' => (bool) $breakOnError
        );
        if ($rule->messageMustBeDisplayed()) {
            if (!isset($this->messages[$prefix][$fieldName])) {
                $this->messages[$prefix][$fieldName] = array();
            }
            end($this->rules[$prefix]);
            $key = key($this->rules[$prefix]);
            $message = $rule->getMessage();
            $this->messages[$prefix][$fieldName][$key][$key + 1] = $message['cObj'];
            $this->messages[$prefix][$fieldName][$key][($key + 1) . '.'] = $message['cObj.'];
        }
        return $this;
    }

    public function isValid() {
        $prefix = $this->getPrefix();
        $this->errors[$prefix] = array();
        $result = TRUE;
        if (is_array($this->rules[$prefix])) {
            foreach ($this->rules[$prefix] as $key => $element) {
                $rule = $element['instance'];
                $fieldName = $element['fieldName'];
                if ($rule->isValid()) {
                    continue;
                }
                $result = FALSE;
                if (!isset($this->errors[$prefix][$fieldName])) {
                    $this->errors[$prefix][$fieldName] = array();
                }
                $error = $rule->getError();
                $this->errors[$prefix][$fieldName][$key][$key + 1] = $error['cObj'];
                $this->errors[$prefix][$fieldName][$key][($key + 1) . '.'] = $error['cObj.'];
                if ($element['breakOnError']) {
                    break;
                }
            }
        }
        return $result;
    }

    public function getMessages() {
        return $this->messages[$this->getPrefix()];
    }

    public function getMessagesByName($name) {
        return $this->messages[$this->getPrefix()][$name];
    }

    public function hasMessage($name) {
        if (isset($this->messages[$this->getPrefix()][$name])) {
            return TRUE;
        }
        return FALSE;
    }

    public function getErrors() {
        return $this->errors[$this->getPrefix()];
    }

    public function getErrorsByName($name) {
        return $this->errors[$this->getPrefix()][$name];
    }

    public function hasErrors($name) {
        if (isset($this->errors[$this->getPrefix()][$name])) {
            return TRUE;
        }
        return FALSE;
    }

}