FormValidatorLength.inc.php

<?php
 
import ('lib.pkp.classes.form.validation.FormValidator');
 
class FormValidatorLength extends FormValidator {
 
   var $_comparator;
 
   var $_length;
 
   function __construct(&$form, $field, $type, $message, $comparator, $length) {
      parent::__construct($form, $field, $type, $message);
      $this->_comparator = $comparator;
      $this->_length = $length;
   }
 
 
   //
   // Setters and Getters
   //
   function getMessage() {
      return __($this->_message, array('length' => $this->_length));
   }
 
 
   //
   // Public methods
   //
   function isValid() {
      if ($this->isEmptyAndOptional()) {
         return true;
 
      } else {
         $length = PKPString::strlen($this->getFieldValue());
         switch ($this->_comparator) {
            case '==':
               return $length == $this->_length;
            case '!=':
               return $length != $this->_length;
            case '<':
               return $length < $this->_length;
            case '>':
               return $length > $this->_length;
            case '<=':
               return $length <= $this->_length;
            case '>=':
               return $length >= $this->_length;
         }
         return false;
      }
   }
}