public function testStripXmlTag()
{
$data = file_get_contents('tests/fixtures/jeux-linux.fr.xml');
$this->assertEquals('<rss', substr(Filter::stripXmlTag($data), 0, 4));
$data = file_get_contents('tests/fixtures/ezrss.it');
$this->assertEquals('<!DOC', substr(Filter::stripXmlTag($data), 0, 5));
$data = file_get_contents('tests/fixtures/fulltextrss.xml');
$this->assertEquals('<rss', substr(Filter::stripXmlTag($data), 0, 4));
$data = file_get_contents('tests/fixtures/sametmax.xml');
$this->assertEquals('<rss', substr(Filter::stripXmlTag($data), 0, 4));
$data = file_get_contents('tests/fixtures/grotte_barbu.xml');
$this->assertEquals('<rss', substr(Filter::stripXmlTag($data), 0, 4));
$data = file_get_contents('tests/fixtures/ibash.ru.xml');
$this->assertEquals('<rss', substr(Filter::stripXmlTag($data), 0, 4));
$data = file_get_contents('tests/fixtures/pcinpact.xml');
$this->assertEquals('<rss', substr(Filter::stripXmlTag($data), 0, 4));
$data = file_get_contents('tests/fixtures/resorts.xml');
$this->assertEquals('<rss', substr(Filter::stripXmlTag($data), 0, 4));
$data = file_get_contents('tests/fixtures/rue89.xml');
$this->assertEquals('<rss', substr(Filter::stripXmlTag($data), 0, 4));
$data = file_get_contents('tests/fixtures/cercle.psy.xml');
$this->assertEquals('<rss', substr(Filter::stripXmlTag($data), 0, 4));
$data = file_get_contents('tests/fixtures/lagrange.xml');
$this->assertEquals('<feed', substr(Filter::stripXmlTag($data), 0, 5));
$data = file_get_contents('tests/fixtures/atom.xml');
$this->assertEquals('<feed', substr(trim(Filter::stripXmlTag($data)), 0, 5));
$data = file_get_contents('tests/fixtures/atomsample.xml');
$this->assertEquals('<feed', substr(trim(Filter::stripXmlTag($data)), 0, 5));
$data = file_get_contents('tests/fixtures/planete-jquery.xml');
$this->assertEquals('<rdf:RDF', trim(substr(trim(Filter::stripXmlTag($data)), 0, 8)));
}
/**
* Get the first XML tag
*
* @access public
* @param string $data Feed content
* @return string
*/
public function getFirstTag($data)
{
// Strip HTML comments (max of 5,000 characters long to prevent crashing)
$data = preg_replace('/<!--(.{0,5000}?)-->/Uis', '', $data);
/* Strip Doctype:
* Doctype needs to be within the first 100 characters. (Ideally the first!)
* If it's not found by then, we need to stop looking to prevent PREG
* from reaching max backtrack depth and crashing.
*/
$data = preg_replace('/^.{0,100}<!DOCTYPE([^>]*)>/Uis', '', $data);
// Strip <?xml version....
$data = Filter::stripXmlTag($data);
// Find the first tag
$open_tag = strpos($data, '<');
$close_tag = strpos($data, '>');
return substr($data, $open_tag, $close_tag);
}
