/**
* @param $keys
*/
public function erase(...$keys)
{
$handle =& $_SESSION;
foreach (Arrays::init($keys) as $key) {
if (isset($handle[$key])) {
$handle =& $handle[$key];
} else {
return;
}
}
unset($handle[Arrays::last($keys)]);
}
/**
* @param $file
* @throws ApplicationException
*/
private static function write($file)
{
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $file[TFiles::MTIME]) . ' GMT');
header('Cache-Control: max-age=0');
header('Content-Type: ' . $file[TFiles::CONTENT_TYPE]);
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $file[TFiles::MTIME]) {
http_response_code(304);
return;
}
$filename = FSTools::hashToFullPath($file[TFiles::SHA1]);
if (!file_exists($filename)) {
throw new ApplicationException("Internal server error: file not exists!");
}
$filesize = filesize($filename);
if (isset($_SERVER["HTTP_RANGE"])) {
$range = str_replace("bytes=", "", $_SERVER["HTTP_RANGE"]);
$start = Arrays::first(explode("-", $range));
} else {
$start = 0;
}
if (isset($range)) {
http_response_code(HttpStatusCodes::HTTP_PARTIAL_CONTENT);
header("Content-Range: bytes " . $start . "-" . ($filesize - 1) . "/" . $filesize);
header("Content-Length: " . ($filesize - $start));
} else {
http_response_code(HttpStatusCodes::HTTP_OK);
header("Content-Length: " . $filesize);
}
header("Accept-Ranges: bytes");
set_time_limit(0);
withOpenedFile($filename, "rb", function ($fh) use($start) {
if ($start > 0) {
fseek($fh, $start, SEEK_SET);
}
while ($data = fread($fh, self::READ_BUFFER_SIZE)) {
echo $data;
flush();
}
});
}
private static function validateListOfTrackIds($track_ids)
{
switch (gettype($track_ids)) {
case "string":
if (is_empty($track_ids)) {
throw new ControllerException("Incorrect file id(s) specified");
}
break;
case "array":
if (Arrays::any("is_empty", $track_ids)) {
throw new ControllerException("Incorrect file id(s) specified");
}
break;
default:
throw new ApplicationException("Incorrect type of argument");
}
}