dd/d0f/DOMLex_8php_source.html

 <?php

 class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
 {

     private $factory;

     public function __construct()
     {
         // setup the factory
         parent::__construct();
         $this->factory = new HTMLPurifier_TokenFactory();
     }

     public function tokenizeHTML($html, $config, $context)
     {
         $html = $this->normalize($html, $config, $context);

         // attempt to armor stray angled brackets that cannot possibly
         // form tags and thus are probably being used as emoticons
         if ($config->get('Core.AggressivelyFixLt')) {
             $char = '[^a-z!\/]';
             $comment = "/<!--(.*?)(-->|\z)/is";
             $html = preg_replace_callback($comment, array($this, 'callbackArmorCommentEntities'), $html);
             do {
                 $old = $html;
                 $html = preg_replace("/<($char)/i", '&lt;\\1', $html);
             } while ($html !== $old);
             $html = preg_replace_callback($comment, array($this, 'callbackUndoCommentSubst'), $html); // fix comments
         }

         // preprocess html, essential for UTF-8
         $html = $this->wrapHTML($html, $config, $context);

         $doc = new DOMDocument();
         $doc->encoding = 'UTF-8'; // theoretically, the above has this covered

         set_error_handler(array($this, 'muteErrorHandler'));
         $doc->loadHTML($html);
         restore_error_handler();

         $tokens = array();
         $this->tokenizeDOM(
             $doc->getElementsByTagName('html')->item(0)-> // <html>
             getElementsByTagName('body')->item(0), //   <body>
             $tokens
         );
         return $tokens;
     }

     protected function tokenizeDOM($node, &$tokens)
     {
         $level = 0;
         $nodes = array($level => new HTMLPurifier_Queue(array($node)));
         $closingNodes = array();
         do {
             while (!$nodes[$level]->isEmpty()) {
                 $node = $nodes[$level]->shift(); // FIFO
                 $collect = $level > 0 ? true : false;
                 $needEndingTag = $this->createStartNode($node, $tokens, $collect);
                 if ($needEndingTag) {
                     $closingNodes[$level][] = $node;
                 }
                 if ($node->childNodes && $node->childNodes->length) {
                     $level++;
                     $nodes[$level] = new HTMLPurifier_Queue();
                     foreach ($node->childNodes as $childNode) {
                         $nodes[$level]->push($childNode);
                     }
                 }
             }
             $level--;
             if ($level && isset($closingNodes[$level])) {
                 while ($node = array_pop($closingNodes[$level])) {
                     $this->createEndNode($node, $tokens);
                 }
             }
         } while ($level > 0);
     }

     protected function createStartNode($node, &$tokens, $collect)
     {
         // intercept non element nodes. WE MUST catch all of them,
         // but we're not getting the character reference nodes because
         // those should have been preprocessed
         if ($node->nodeType === XML_TEXT_NODE) {
             $tokens[] = $this->factory->createText($node->data);
             return false;
         } elseif ($node->nodeType === XML_CDATA_SECTION_NODE) {
             // undo libxml's special treatment of <script> and <style> tags
             $last = end($tokens);
             $data = $node->data;
             // (note $node->tagname is already normalized)
             if ($last instanceof HTMLPurifier_Token_Start && ($last->name == 'script' || $last->name == 'style')) {
                 $new_data = trim($data);
                 if (substr($new_data, 0, 4) === '<!--') {
                     $data = substr($new_data, 4);
                     if (substr($data, -3) === '-->') {
                         $data = substr($data, 0, -3);
                     } else {
                         // Highly suspicious! Not sure what to do...
                     }
                 }
             }
             $tokens[] = $this->factory->createText($this->parseData($data));
             return false;
         } elseif ($node->nodeType === XML_COMMENT_NODE) {
             // this is code is only invoked for comments in script/style in versions
             // of libxml pre-2.6.28 (regular comments, of course, are still
             // handled regularly)
             $tokens[] = $this->factory->createComment($node->data);
             return false;
         } elseif ($node->nodeType !== XML_ELEMENT_NODE) {
             // not-well tested: there may be other nodes we have to grab
             return false;
         }

         $attr = $node->hasAttributes() ? $this->transformAttrToAssoc($node->attributes) : array();

         // We still have to make sure that the element actually IS empty
         if (!$node->childNodes->length) {
             if ($collect) {
                 $tokens[] = $this->factory->createEmpty($node->tagName, $attr);
             }
             return false;
         } else {
             if ($collect) {
                 $tokens[] = $this->factory->createStart(
                     $tag_name = $node->tagName, // somehow, it get's dropped
                     $attr
                 );
             }
             return true;
         }
     }

     protected function createEndNode($node, &$tokens)
     {
         $tokens[] = $this->factory->createEnd($node->tagName);
     }


     protected function transformAttrToAssoc($node_map)
     {
         // NamedNodeMap is documented very well, so we're using undocumented
         // features, namely, the fact that it implements Iterator and
         // has a ->length attribute
         if ($node_map->length === 0) {
             return array();
         }
         $array = array();
         foreach ($node_map as $attr) {
             $array[$attr->name] = $attr->value;
         }
         return $array;
     }

     public function muteErrorHandler($errno, $errstr)
     {
     }

     public function callbackUndoCommentSubst($matches)
     {
         return '<!--' . strtr($matches[1], array('&amp;' => '&', '&lt;' => '<')) . $matches[2];
     }

     public function callbackArmorCommentEntities($matches)
     {
         return '<!--' . str_replace('&', '&amp;', $matches[1]) . $matches[2];
     }

     protected function wrapHTML($html, $config, $context)
     {
         $def = $config->getDefinition('HTML');
         $ret = '';

         if (!empty($def->doctype->dtdPublic) || !empty($def->doctype->dtdSystem)) {
             $ret .= '<!DOCTYPE html ';
             if (!empty($def->doctype->dtdPublic)) {
                 $ret .= 'PUBLIC "' . $def->doctype->dtdPublic . '" ';
             }
             if (!empty($def->doctype->dtdSystem)) {
                 $ret .= '"' . $def->doctype->dtdSystem . '" ';
             }
             $ret .= '>';
         }

         $ret .= '<html><head>';
         $ret .= '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
         // No protection if $html contains a stray </div>!
         $ret .= '</head><body>' . $html . '</body></html>';
         return $ret;
     }
 }

 // vim: et sw=4 sts=4
HTMLPurifier_Lexer_DOMLex\tokenizeDOM
tokenizeDOM($node, &$tokens)
Iterative function that tokenizes a node, putting it into an accumulator.
Definition: DOMLex.php:91

DOMDocument

$ret
$ret
Definition: Structures_BibTex_example.php:7

HTMLPurifier_Lexer_DOMLex\wrapHTML
wrapHTML($html, $config, $context)
Wraps an HTML fragment in the necessary HTML.
Definition: DOMLex.php:255

HTMLPurifier_Queue
A simple array-backed queue, based off of the classic Okasaki persistent amortized queue...
Definition: Queue.php:20

HTMLPurifier_Lexer
Forgivingly lexes HTML (SGML-style) markup into tokens.
Definition: Lexer.php:42

HTMLPurifier_Lexer_DOMLex\createEndNode
createEndNode($node, &$tokens)
Definition: DOMLex.php:190

HTMLPurifier_Lexer_DOMLex\transformAttrToAssoc
transformAttrToAssoc($node_map)
Converts a DOMNamedNodeMap of DOMAttr objects into an assoc array.
Definition: DOMLex.php:202

HTMLPurifier_Token_Start
Concrete start token class.
Definition: Start.php:6

HTMLPurifier_TokenFactory
Factory for token generation.
Definition: TokenFactory.php:14

HTMLPurifier_Lexer_DOMLex
Parser that uses PHP 5&#39;s DOM extension (part of the core).
Definition: DOMLex.php:27

HTMLPurifier_Lexer\parseData
parseData($string)
Parses special entities into the proper characters.
Definition: Lexer.php:186

HTMLPurifier_Lexer_DOMLex\muteErrorHandler
muteErrorHandler($errno, $errstr)
An error handler that mutes all errors.
Definition: DOMLex.php:222

HTMLPurifier_Lexer_DOMLex\callbackUndoCommentSubst
callbackUndoCommentSubst($matches)
Callback function for undoing escaping of stray angled brackets in comments.
Definition: DOMLex.php:232

$data
$data
Definition: example_011.php:126

HTMLPurifier_Lexer\normalize
normalize($html, $config, $context)
Takes a piece of HTML and normalizes it by converting entities, fixing encoding, extracting bits...
Definition: Lexer.php:294

HTMLPurifier_Lexer_DOMLex\createStartNode
createStartNode($node, &$tokens, $collect)
Definition: DOMLex.php:130

HTMLPurifier_Lexer_DOMLex\$factory
$factory
HTMLPurifier_TokenFactory
Definition: DOMLex.php:33

$comment
$comment
Definition: buildRTE.php:83

HTMLPurifier_Lexer_DOMLex\__construct
__construct()
Definition: DOMLex.php:35

HTMLPurifier_Lexer_DOMLex\callbackArmorCommentEntities
callbackArmorCommentEntities($matches)
Callback function that entity-izes ampersands in comments so that callbackUndoCommentSubst doesn&#39;t cl...
Definition: DOMLex.php:243

HTMLPurifier_Lexer_DOMLex\tokenizeHTML
tokenizeHTML($html, $config, $context)
Definition: DOMLex.php:48

$html
$html
Definition: example_001.php:87