library/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  * From XHTML 1.0 Transitional to Strict, there is a notable change where
   9  */
  10 class   HTMLPurifier_ChildDef_StrictBlockquote
  11 extends HTMLPurifier_ChildDef_Required
  12 {
  13     var $allow_empty = true;
  14     var $type = 'strictblockquote';
  15     var $init = false;
  16     function HTMLPurifier_ChildDef_StrictBlockquote() {}
  17     function validateChildren($tokens_of_children, $config, &$context) {
  18
  19         $def = $config->getHTMLDefinition();
  20         if (!$this->init) {
  21             // allow all inline elements
  22             $this->elements = $def->info_flow_elements;
  23             $this->elements['#PCDATA'] = true;
  24             $this->init = true;
  25         }
  26
  27         $result = parent::validateChildren($tokens_of_children, $config, $context);
  28         if ($result === false) return array();
  29         if ($result === true) $result = $tokens_of_children;
  30
  31         $block_wrap_start = new HTMLPurifier_Token_Start($def->info_block_wrapper);
  32         $block_wrap_end   = new HTMLPurifier_Token_End(  $def->info_block_wrapper);
  33         $is_inline = false;
  34         $depth = 0;
  35         $ret = array();
  36
  37         // assuming that there are no comment tokens
  38         foreach ($result as $i => $token) {
  39             $token = $result[$i];
  40             // ifs are nested for readability
  41             if (!$is_inline) {
  42                 if (!$depth) {
  43                      if (($token->type == 'text') ||
  44                          ($def->info[$token->name]->type == 'inline')) {
  45                         $is_inline = true;
  46                         $ret[] = $block_wrap_start;
  47                      }
  48                 }
  49             } else {
  50                 if (!$depth) {
  51                     // starting tokens have been inline text / empty
  52                     if ($token->type == 'start' || $token->type == 'empty') {
  53                         if ($def->info[$token->name]->type == 'block') {
  54                             // ended
  55                             $ret[] = $block_wrap_end;
  56                             $is_inline = false;
  57                         }
  58                     }
  59                 }
  60             }
  61             $ret[] = $token;
  62             if ($token->type == 'start') $depth++;
  63             if ($token->type == 'end')   $depth--;
  64         }
  65         if ($is_inline) $ret[] = $block_wrap_end;
  66         return $ret;
  67     }
  68 }
  69
  70 ?>