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   1  <?php
   2  
   3  /**
   4   * Takes the contents of blockquote when in strict and reformats for validation.
   5   */
   6  class HTMLPurifier_ChildDef_StrictBlockquote extends HTMLPurifier_ChildDef_Required
   7  {
   8      /**
   9       * @type array
  10       */
  11      protected $real_elements;
  12  
  13      /**
  14       * @type array
  15       */
  16      protected $fake_elements;
  17  
  18      /**
  19       * @type bool
  20       */
  21      public $allow_empty = true;
  22  
  23      /**
  24       * @type string
  25       */
  26      public $type = 'strictblockquote';
  27  
  28      /**
  29       * @type bool
  30       */
  31      protected $init = false;
  32  
  33      /**
  34       * @param HTMLPurifier_Config $config
  35       * @return array
  36       * @note We don't want MakeWellFormed to auto-close inline elements since
  37       *       they might be allowed.
  38       */
  39      public function getAllowedElements($config)
  40      {
  41          $this->init($config);
  42          return $this->fake_elements;
  43      }
  44  
  45      /**
  46       * @param array $children
  47       * @param HTMLPurifier_Config $config
  48       * @param HTMLPurifier_Context $context
  49       * @return array
  50       */
  51      public function validateChildren($children, $config, $context)
  52      {
  53          $this->init($config);
  54  
  55          // trick the parent class into thinking it allows more
  56          $this->elements = $this->fake_elements;
  57          $result = parent::validateChildren($children, $config, $context);
  58          $this->elements = $this->real_elements;
  59  
  60          if ($result === false) {
  61              return array();
  62          }
  63          if ($result === true) {
  64              $result = $children;
  65          }
  66  
  67          $def = $config->getHTMLDefinition();
  68          $block_wrap_name = $def->info_block_wrapper;
  69          $block_wrap = false;
  70          $ret = array();
  71  
  72          foreach ($result as $node) {
  73              if ($block_wrap === false) {
  74                  if (($node instanceof HTMLPurifier_Node_Text && !$node->is_whitespace) ||
  75                      ($node instanceof HTMLPurifier_Node_Element && !isset($this->elements[$node->name]))) {
  76                          $block_wrap = new HTMLPurifier_Node_Element($def->info_block_wrapper);
  77                          $ret[] = $block_wrap;
  78                  }
  79              } else {
  80                  if ($node instanceof HTMLPurifier_Node_Element && isset($this->elements[$node->name])) {
  81                      $block_wrap = false;
  82  
  83                  }
  84              }
  85              if ($block_wrap) {
  86                  $block_wrap->children[] = $node;
  87              } else {
  88                  $ret[] = $node;
  89              }
  90          }
  91          return $ret;
  92      }
  93  
  94      /**
  95       * @param HTMLPurifier_Config $config
  96       */
  97      private function init($config)
  98      {
  99          if (!$this->init) {
 100              $def = $config->getHTMLDefinition();
 101              // allow all inline elements
 102              $this->real_elements = $this->elements;
 103              $this->fake_elements = $def->info_content_sets['Flow'];
 104              $this->fake_elements['#PCDATA'] = true;
 105              $this->init = true;
 106          }
 107      }
 108  }
 109  
 110  // vim: et sw=4 sts=4