lib/htmlpurifier/HTMLPurifier/ChildDef/StrictBlockquote.php

   1 <?php
   2
   3 require_once 'HTMLPurifier/ChildDef/Required.php';
   4
   5 /**
   6  * Takes the contents of blockquote when in strict and reformats for validation.
   7  */
   8 class   HTMLPurifier_ChildDef_StrictBlockquote
   9 extends HTMLPurifier_ChildDef_Required
  10 {
  11     var $real_elements;
  12     var $fake_elements;
  13     var $allow_empty = true;
  14     var $type = 'strictblockquote';
  15     var $init = false;
  16     function validateChildren($tokens_of_children, $config, &$context) {
  17
  18         $def = $config->getHTMLDefinition();
  19         if (!$this->init) {
  20             // allow all inline elements
  21             $this->real_elements = $this->elements;
  22             $this->fake_elements = $def->info_content_sets['Flow'];
  23             $this->fake_elements['#PCDATA'] = true;
  24             $this->init = true;
  25         }
  26
  27         // trick the parent class into thinking it allows more
  28         $this->elements = $this->fake_elements;
  29         $result = parent::validateChildren($tokens_of_children, $config, $context);
  30         $this->elements = $this->real_elements;
  31
  32         if ($result === false) return array();
  33         if ($result === true) $result = $tokens_of_children;
  34
  35         $block_wrap_start = new HTMLPurifier_Token_Start($def->info_block_wrapper);
  36         $block_wrap_end   = new HTMLPurifier_Token_End(  $def->info_block_wrapper);
  37         $is_inline = false;
  38         $depth = 0;
  39         $ret = array();
  40
  41         // assuming that there are no comment tokens
  42         foreach ($result as $i => $token) {
  43             $token = $result[$i];
  44             // ifs are nested for readability
  45             if (!$is_inline) {
  46                 if (!$depth) {
  47                      if (
  48                         ($token->type == 'text' && !$token->is_whitespace) ||
  49                         ($token->type != 'text' && !isset($this->elements[$token->name]))
  50                      ) {
  51                         $is_inline = true;
  52                         $ret[] = $block_wrap_start;
  53                      }
  54                 }
  55             } else {
  56                 if (!$depth) {
  57                     // starting tokens have been inline text / empty
  58                     if ($token->type == 'start' || $token->type == 'empty') {
  59                         if (isset($this->elements[$token->name])) {
  60                             // ended
  61                             $ret[] = $block_wrap_end;
  62                             $is_inline = false;
  63                         }
  64                     }
  65                 }
  66             }
  67             $ret[] = $token;
  68             if ($token->type == 'start') $depth++;
  69             if ($token->type == 'end')   $depth--;
  70         }
  71         if ($is_inline) $ret[] = $block_wrap_end;
  72         return $ret;
  73     }
  74 }
  75