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   1  <?php declare(strict_types=1);
   2  
   3  /**
   4  * @package   s9e\TextFormatter
   5  * @copyright Copyright (c) 2010-2022 The s9e authors
   6  * @license   http://www.opensource.org/licenses/mit-license.php The MIT License
   7  */
   8  namespace s9e\TextFormatter\Configurator\Items\AttributeFilters;
   9  
  10  use RuntimeException;
  11  use s9e\TextFormatter\Configurator\Helpers\ContextSafeness;
  12  use s9e\TextFormatter\Configurator\Items\AttributeFilter;
  13  
  14  abstract class AbstractMapFilter extends AttributeFilter
  15  {
  16      /**
  17      * {@inheritdoc}
  18      */
  19  	public function asConfig()
  20      {
  21          if (!isset($this->vars['map']))
  22          {
  23              $name = preg_replace('(.*\\\\|Filter$)', '', get_class($this));
  24  
  25              throw new RuntimeException($name . " filter is missing a 'map' value");
  26          }
  27  
  28          return parent::asConfig();
  29      }
  30  
  31      /**
  32      * Assess the safeness of this attribute filter based on given list of strings
  33      *
  34      * @param  string[] $strings
  35      * @return void
  36      */
  37  	protected function assessSafeness(array $strings): void
  38      {
  39          $str = implode('', $strings);
  40          foreach (['AsURL', 'InCSS', 'InJS'] as $context)
  41          {
  42              $callback = ContextSafeness::class . '::getDisallowedCharacters' . $context;
  43              foreach ($callback() as $char)
  44              {
  45                  if (strpos($str, $char) !== false)
  46                  {
  47                      continue 2;
  48                  }
  49              }
  50  
  51              $methodName = 'markAsSafe' . $context;
  52              $this->$methodName();
  53          }
  54      }
  55  }