/**
* Intialize descriptor from an existing descriptor file
*
* @param string $source
*
* @return Deepzoom\Descriptor Fluent interface
* @throw InvalidArgumentExceptioncheck pyramid level
*/
public function open($source)
{
if ($this->_streamWrapper->exists($source)) {
/**
* @var $xml SimpleXMLElement
*/
$xml = simplexml_load_string($this->_streamWrapper->getContents($source), null, LIBXML_NOERROR);
if ($xml !== false) {
$this->_width = (int) $xml->Size["Width"];
$this->_height = (int) $xml->Size["Height"];
$this->_tileSize = (int) $xml["TileSize"];
$this->_tileOverlap = (int) $xml["Overlap"];
$this->_tileFormat = (string) $xml["Format"];
} else {
throw new Exception('Invalid Xml');
}
} else {
throw new \InvalidArgumentException('File not found : ' . $source);
}
return $this;
}
