Your IP : 3.14.249.191
<?php
namespace Bitrix\Main\UrlPreview;
use Bitrix\Main\ArgumentException;
use Bitrix\Main\Web\Uri;
class ParserChain
{
/** @var array */
protected static $metadataParsers = array(
'Bitrix\Main\UrlPreview\Parser\OpenGraph',
'Bitrix\Main\UrlPreview\Parser\SchemaOrg',
'Bitrix\Main\UrlPreview\Parser\Oembed',
'Bitrix\Main\UrlPreview\Parser\Common'
);
/**
* @var array Key is host, value - parser class name
*/
protected static $metadataParsersByHost = [
'vk.com' => 'Bitrix\Main\UrlPreview\Parser\Vk',
'www.facebook.com' => 'Bitrix\Main\UrlPreview\Parser\Facebook',
'www.instagram.com' => 'Bitrix\Main\UrlPreview\Parser\Instagram',
'maps.apple.com' => 'Bitrix\Main\UrlPreview\Parser\AppleMaps',
'rutube.ru' => 'Bitrix\Main\UrlPreview\Parser\RuTube',
];
/**
* @param Uri $uri
* @return array
*/
protected static function getParserChain(Uri $uri)
{
$result = array();
if(isset(static::$metadataParsersByHost[$uri->getHost()]))
{
$result[] = static::$metadataParsersByHost[$uri->getHost()];
}
$result = array_merge($result, static::$metadataParsers);
return $result;
}
/**
* Executes chain of parsers, passing them $document
*
* @param HtmlDocument $document
*/
public static function extractMetadata(HtmlDocument $document)
{
foreach(static::getParserChain($document->getUri()) as $parserClassName)
{
/** @var \Bitrix\Main\UrlPreview\Parser $parser */
if(class_exists($parserClassName))
{
$parser = new $parserClassName();
if ($parser instanceof Parser)
{
$parser->handle($document);
}
}
if($document->checkMetadata())
{
break;
}
}
}
/**
* Registers special parser for host
*
* @param string $host
* @param string $parserClassName Parser class must extend \Bitrix\Main\UrlPreview\Parser
* @throws ArgumentException
*/
public static function registerMetadataParser($host, $parserClassName)
{
if(!class_exists($parserClassName) || !is_subclass_of($parserClassName, '\Bitrix\Main\UrlPreview\Parser'))
{
throw new ArgumentException('Parser class must extend \Bitrix\Main\UrlPreview\Parser', 'parserClassName');
}
static::$metadataParsersByHost[$host] = $parserClassName;
}
}