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<?php
namespace Bitrix\Main\Web\DOM;
use \Bitrix\Main\Text\HtmlFilter;
class HtmlParser extends Parser
{
public $debugTime = 0;
protected $tagsMustBeClosed = array('SCRIPT', 'STYLE');
public $storePhpCode = true;
protected static $objectCounter = 0;
protected $currentObjectNumber;
protected $storedItemCounter;
protected $storedPHP = array();
public function __construct()
{
static::$objectCounter++;
$this->currentObjectNumber = static::$objectCounter;
$this->storedItemCounter = 0;
$this->setConfig(new HtmlParserConfig);
}
/*
* @param Node $node
* @return string
*/
public function getSource(Node $node)
{
$source = '';
switch($node->getNodeType())
{
case Node::ELEMENT_NODE:
/*@var $node Element*/
$source = $this->getSourceElement($node);
break;
case Node::ATTRIBUTE_NODE:
/*@var $node Attr*/
$source = $this->getSourceAttr($node);
break;
case Node::TEXT_NODE:
/*@var Text $node*/
if($node->getParentNode() && in_array($node->getParentNode()->getNodeName(), $this->tagsMustBeClosed))
{
$source = $node->getNodeValue();
}
else
{
$source = HtmlFilter::encode($node->getNodeValue(), ENT_QUOTES);
}
break;
case Node::COMMENT_NODE:
/*@var Comment $node*/
$source = '<!--' . $node->getNodeValue() . '-->';
if($this->storePhpCode)
{
$source = $this->restorePHP($source);
}
break;
case Node::DOCUMENT_TYPE_NODE:
/*@var DocumentType $node*/
$source = $this->getSourceDocType($node);
break;
}
return $source;
}
protected function getSourceAttr(Attr $node)
{
return $node->getName() . '="' . HtmlFilter::encode($node->getValue()) . '"';
}
protected function getSourceElement(Element $node)
{
$nodeName = mb_strtolower($node->getNodeName());
$source = '<' . $nodeName;
if($node->hasAttributes())
{
$attrList = $node->getAttributesArray();
foreach($attrList as $attr)
{
$source .= ' ' . $this->getSource($attr);
}
}
if($node->hasChildNodes())
{
$source .= '>';
if(Node::$isNodeListAsArray)
{
$childNodes = $node->getChildNodesArray();
foreach ($childNodes as $child)
{
$source .= $this->getSource($child);
}
}
else
{
for($i = 0; $i < $node->getChildNodes()->getLength(); $i++)
{
$source .= $this->getSource($node->getChildNodes()->item($i));
}
}
$source .= '</' . $nodeName . '>';
}
else
{
$source .= ' />';
}
return $source;
}
protected function getSourceDocType(DocumentType $node)
{
$source = '<!DOCTYPE html>';
return $source;
}
/*
* @param string $text
* @param Node $node
* @return void
*/
public function parse($text = "", Node $node)
{
if($this->storePhpCode)
{
$text = $this->storePHP($text);
}
else
{
$text = $this->commentPHP($text);
}
$isCharOpen = true;
$buffer = '';
$textLength = strlen($text);
for($i = 0; $i < $textLength; $i++)
{
$char = substr($text, $i, 1);
if($char === '<')
{
$node = $this->getNextNode($buffer, $node);
$buffer = $char;
$isCharOpen = true;
}
elseif($char === '>')
{
$buffer .= $char;
if($isCharOpen)
{
$node = $this->getNextNode($buffer, $node);
$buffer = '';
}
$isCharOpen = false;
}
else
{
$buffer .= $char;
}
if(!$node)
{
return null;
}
}
if($buffer != '')
{
$node = $this->getNextNode($buffer, $node);
}
return $node;
}
protected function parseElement($text)
{
$result = array('NAME' => '', 'ATTRIBUTES' => array());
if(preg_match('/[ \t\r\n]/S', $text, $matches, PREG_OFFSET_CAPTURE))
{
$delimiterPosition = $matches[0][1];
$result['NAME'] = mb_strtoupper(mb_substr($text, 0, $delimiterPosition));
$textAttr = mb_substr($text, $delimiterPosition + 1);
$result['ATTRIBUTES'] = $this->parseAttributes($textAttr);
}
else
{
$result['NAME'] = mb_strtoupper($text);
}
return $result;
}
protected function parseDocType($text)
{
return array();
}
protected function parseAttributes($text)
{
static $search = array(
"'&(quot|#34);'i",
"'&(lt|#60);'i",
"'&(gt|#62);'i",
"'&(amp|#38);'i",
);
static $replace = array(
"\"",
"<",
">",
"&",
);
$attributes = array();
if ($text !== "")
{
preg_match_all("/(?'name'[\w\-_:?&]+)(?'eq'\s*=\s*)?(?(eq)([\"'])(?'val'.*?)\g{-2})/s", $text, $attrTmp);
if(mb_strpos($text, "&") === false)
{
foreach($attrTmp['name'] as $i => $attrName)
{
$attributes[$attrName] = $attrTmp['val'][$i];
}
}
else
{
foreach($attrTmp['name'] as $i => $attrName)
{
$attributes[$attrName] = preg_replace($search, $replace, $attrTmp['val'][$i]);
}
}
}
return $attributes;
}
protected function parseAttributesOld($text)
{
preg_match_all("/\b([\w_-]+\s*=\s*([\"']*)[^\\2]+?\\2)/", $text, $pairs);
$pairs = $pairs[0];
$attributeList = Array();
foreach($pairs as $pair)
{
$attr = array_map(
function ($data){
$data = preg_replace("/(^['\"]|['\"]$)/","",$data);
return $data;
},
preg_split("/\s*=\s*/", $pair)
);
$name = $attr[0];
$value = $attr[1];
$attributeList[$name] = $value;
}
return $attributeList;
}
protected function getNextNode($tag, Node $parentNode)
{
$node = null;
$isSingleTag = true;
static $tagsWithoutClose = array('INPUT'=>1, 'IMG'=>1, 'BR'=>1, 'HR'=>1, 'META'=>1, 'AREA'=>1, 'BASE'=>1, 'COL'=>1, 'EMBED'=>1, 'KEYGEN'=>1, 'LINK'=>1, 'PARAM'=>1, 'SOURCE'=>1, 'TRACK'=>1, 'WBR'=>1);
$tagsCantHaveNestedTags = array();
$document = $parentNode->getOwnerDocument();
if($parentNode->getNodeType() === Node::COMMENT_NODE)
{
$commentClosePosition = mb_strpos($tag, '-->');
if($commentClosePosition !== false)
{
$clean = mb_substr($tag, 0, $commentClosePosition);
$parentNode->setNodeValue($parentNode->getNodeValue() . $clean);
$parentNode->bxNodeFoundCloseTag = true;
$tag = mb_substr($tag, $commentClosePosition + 3);
if(!$tag)
{
return $parentNode->getParentNode();
}
else
{
$parentNode = $parentNode->getParentNode();
}
}
else
{
$parentNode->setNodeValue($parentNode->getNodeValue() . $tag);
return $parentNode;
}
}
elseif(in_array($parentNode->getNodeName(), $this->tagsMustBeClosed))
{
if(mb_strtoupper(mb_substr($tag, -9)) == '</'.$parentNode->getNodeName().'>')
{
$parentNode->bxNodeFoundCloseTag = true;
$parentNode = $parentNode->getParentNode();
}
else
{
$firstChild = $parentNode->getFirstChild();
if(!$firstChild)
{
$parentNode->appendChild($document->createTextNode($tag));
}
else
{
$firstChild->setNodeValue($firstChild->getNodeValue() . $tag);
}
$parentNode->bxNodeFoundCloseTag = false;
return $parentNode;
}
}
if(mb_substr($tag, 0, 2) === '</')
{
// closed tag
//TODO: find closest opened parent with same nodeName and return it
$cleaned = mb_strtoupper(mb_substr($tag, 2, -mb_strlen('>')));
$searchableNode = $parentNode;
$isSearchableNodeFound = false;
$unclosedNodes = array();
do
{
if(!$searchableNode->bxNodeFoundCloseTag)
{
$unclosedNodes[] = $searchableNode;
}
if($searchableNode->getNodeName() === $cleaned)
{
$isSearchableNodeFound = true;
break;
}
}while($searchableNode = $searchableNode->getParentNode());
if($isSearchableNodeFound)
{
foreach($unclosedNodes as $unclosedNode)
{
/* @var $unclosedNode Node */
if(in_array($unclosedNode->getNodeName(), $tagsCantHaveNestedTags))
{
if($unclosedNode->hasChildNodes())
{
foreach ($unclosedNode->getChildNodesArray() as $childNode)
{
$unclosedNode->getParentNode()->appendChild($unclosedNode->removeChild($childNode));
}
}
}
$unclosedNode->bxNodeFoundCloseTag = true;
}
return $searchableNode->getParentNode();
}
else
{
if(false)
{
throw new DomException('Parser error. Find close tag, but can not find open tag ' . $cleaned);
}
else
{
if ($parentNode->getParentNode())
{
$parentNode->getParentNode()->bxNodeFoundCloseTag = true;
}
return $parentNode;
}
}
}
elseif(mb_substr($tag, 0, 4) === '<!--')
{
// Comment
$cleaned = mb_substr($tag, 4);
if(mb_substr($tag, -3) == '-->')
{
$cleaned = mb_substr($cleaned, 0, -3);
$parentNode->bxNodeFoundCloseTag = true;
}
else
{
$isSingleTag = false;
}
//$parentNode->bxNodeFoundCloseTag = false;
$node = $document->createComment($cleaned);
}
elseif(mb_substr($tag, 0, 1) === '<')
{
// Element
if(mb_substr($tag, -2) === '/>')
{
// empty tag
$cleaned = mb_substr($tag, 1, -2);
$bxNodeWithCloseTag = false;
$isSingleTag = true;
}
else
{
$cleaned = mb_substr($tag, 1, -1);
$isSingleTag = false;
$bxNodeWithCloseTag = true;
}
$list = $this->parseElement($cleaned);
$isDocType = mb_substr($list['NAME'], 0, mb_strlen('!DOCTYPE')) === '!DOCTYPE';
if(isset($tagsWithoutClose[$list['NAME']]) || $isDocType)
{
$bxNodeWithCloseTag = false;
$isSingleTag = true;
}
if($isDocType)
{
$list = $this->parseDocType($cleaned);
//TODO: set doctype fields
}
else
{
$node = $document->createElement($list['NAME']);
foreach($list['ATTRIBUTES'] as $attrName => $attrValue)
{
$nodeAttr = $document->createAttribute($attrName, $attrValue);
$node->setAttributeNode($nodeAttr);
}
$node->bxNodeWithCloseTag = $bxNodeWithCloseTag;
}
}
else
{
// Text
$cleaned = html_entity_decode($tag, ENT_QUOTES, (defined("BX_UTF") ? "UTF-8" : "ISO-8859-1"));
$node = $document->createTextNode($cleaned);
}
if($node && $parentNode)
{
$parentNode->appendChild($node);
if(!$isSingleTag)
{
return $node;
}
}
return $parentNode;
}
/*
* @param string $html
* @return string
*/
public function commentPHP($html)
{
$html = str_replace(array('<?', '?>'), array('<!--', '-->'), $html);
return $html;
}
/*
* @param string $html
* @return string
*/
public function storePHP($html)
{
if(preg_match_all('/(<\?[\W\w\n]*?\?>)/i', $html, $matches, PREG_SET_ORDER) && is_array($matches))
{
$prefix = 'BX_DOM_DOCUMENT_PHP_SLICE_PLACEHOLDER_' . $this->currentObjectNumber . '_';
foreach($matches as $key => $value)
{
$this->storedItemCounter++;
$this->storedPHP['<!--' . $prefix . $this->storedItemCounter . '-->'] = $value[0];
}
$replaceFrom = array_values($this->storedPHP);
$replaceTo = array_keys($this->storedPHP);
$html = str_replace($replaceFrom, $replaceTo, $html);
}
return $html;
}
/*
* @param string $html
* @return string
*/
public function restorePHP($html)
{
$html = str_replace(
array_keys($this->storedPHP),
array_values($this->storedPHP),
$html
);
return $html;
}
}