/**
* Download a list of assets (img,css,js) that are used by a page
* @param $assets array of strings of relative paths of assets
* @param $url string path to the page from which the assets are referenced
* @return array where keys are asset paths, and values are body/header dictionaries returned from open_url, along with
* another key containing the absolute path to the asset
*/
private function download_assets($assets, $url = '')
{
$result = array();
/* Commented out code is the one-asset-at-a-time version */
// foreach ($assets as $key => $asset) {
// $f = AmberNetworkUtils::open_url($asset['url'], array(CURLOPT_REFERER => $url));
// if ($f) {
// $result[$key] = array_merge($f,$asset);
// }
// }
$urls = array();
$keys = array();
foreach ($assets as $key => $asset) {
$urls[] = $asset['url'];
$keys[$asset['url']] = $key;
}
$response = AmberNetworkUtils::open_multi_url($urls, array(CURLOPT_REFERER => $url));
foreach ($assets as $key => $asset) {
if (is_array($response[$asset['url']])) {
$result[$key] = array_merge($response[$asset['url']], $asset);
}
}
return $result;
}
/**
* Open a URL, and return an array with dictionary of header information and the contents of the URL
* @param $url string of resource to download
* @return array dictionary of header information and a stream to the contents of the URL
*/
public static function open_url($url, $additional_options = array())
{
$result = AmberNetworkUtils::open_multi_url(array($url), $additional_options);
if (count($result) == 1) {
return array_pop($result);
} else {
return FALSE;
}
}
