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<?php
namespace Wallabag\CoreBundle\Service;
use Wallabag\CoreBundle\Helper\Content;
use Wallabag\CoreBundle\Helper\Url;
final class Extractor
{
public static function extract($url)
{
$pageContent = self::getPageContent(new Url(base64_encode($url)));
$title = $pageContent['rss']['channel']['item']['title'] ?: 'Untitled';
$body = $pageContent['rss']['channel']['item']['description'];
$content = new Content();
$content->setTitle($title);
$content->setBody($body);
return $content;
}
/**
* Get the content for a given URL (by a call to FullTextFeed).
*
* @param Url $url
*
* @return mixed
*/
public static function getPageContent(Url $url)
{
// Saving and clearing context
$REAL = array();
foreach ($GLOBALS as $key => $value) {
if ($key != 'GLOBALS' && $key != '_SESSION' && $key != 'HTTP_SESSION_VARS') {
$GLOBALS[$key] = array();
$REAL[$key] = $value;
}
}
// Saving and clearing session
if (isset($_SESSION)) {
$REAL_SESSION = array();
foreach ($_SESSION as $key => $value) {
$REAL_SESSION[$key] = $value;
unset($_SESSION[$key]);
}
}
// Running code in different context
$scope = function () {
extract(func_get_arg(1));
$_GET = $_REQUEST = array(
'url' => $url->getUrl(),
'max' => 5,
'links' => 'preserve',
'exc' => '',
'format' => 'json',
'submit' => 'Create Feed',
);
ob_start();
require func_get_arg(0);
$json = ob_get_contents();
ob_end_clean();
return $json;
};
// Silence $scope function to avoid
// issues with FTRSS when error_reporting is to high
// FTRSS generates PHP warnings which break output
$json = @$scope(__DIR__.'/../../../../vendor/wallabag/Fivefilters_Libraries/makefulltextfeed.php', array('url' => $url));
// Clearing and restoring context
foreach ($GLOBALS as $key => $value) {
if ($key != 'GLOBALS' && $key != '_SESSION') {
unset($GLOBALS[$key]);
}
}
foreach ($REAL as $key => $value) {
$GLOBALS[$key] = $value;
}
// Clearing and restoring session
if (isset($REAL_SESSION)) {
foreach ($_SESSION as $key => $value) {
unset($_SESSION[$key]);
}
foreach ($REAL_SESSION as $key => $value) {
$_SESSION[$key] = $value;
}
}
return json_decode($json, true);
}
}
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