public function negotiateRdfContentType($acceptHeader)
{
$contentTypes = array('application/rdf+xml', 'text/turtle', 'application/ld+json');
$negotiationResults = array();
$negotiatedType = http_negotiate_content_type($contentTypes, $negotiationResults);
if (!empty($negotiationResults)) {
return RdfType::getByMimeType($negotiatedType);
}
return null;
}
/**
* Test Http functions.
*/
function test_functions()
{
http_cache_last_modified();
http_chunked_decode();
http_deflate();
http_inflate();
http_build_cookie();
http_date();
http_get_request_body_stream();
http_get_request_body();
http_get_request_headers();
http_match_etag();
http_match_modified();
http_match_request_header();
http_support();
http_negotiate_charset();
http_negotiate_content_type();
http_negotiate_language();
ob_deflatehandler();
ob_etaghandler();
ob_inflatehandler();
http_parse_cookie();
http_parse_headers();
http_parse_message();
http_parse_params();
http_persistent_handles_clean();
http_persistent_handles_count();
http_persistent_handles_ident();
http_get();
http_head();
http_post_data();
http_post_fields();
http_put_data();
http_put_file();
http_put_stream();
http_request_body_encode();
http_request_method_exists();
http_request_method_name();
http_request_method_register();
http_request_method_unregister();
http_request();
http_redirect();
http_send_content_disposition();
http_send_content_type();
http_send_data();
http_send_file();
http_send_last_modified();
http_send_status();
http_send_stream();
http_throttle();
http_build_str();
http_build_url();
}
/**
* utility function to replace http_negotiate_content_type when its not available
* see: http://pecl.php.net/pecl_http
**/
private function negotiateContentType($request)
{
if (function_exists('http_negotiate_content_type')) {
return http_negotiate_content_type(array_keys($this->responseTypes));
}
$string = $request->getHeader('Accept');
$mimeTypes = array();
// Accept header is case insensitive, and whitespace isn't important
$string = strtolower(str_replace(' ', '', $string));
// divide it into parts in the place of a ","
$types = explode(',', $string);
foreach ($types as $type) {
// the default quality is 1.
$quality = 1;
// check if there is a different quality
if (strpos($type, ';q=')) {
// divide "mime/type;q=X" into two parts: "mime/type" / "X"
list($type, $quality) = explode(';q=', $type);
} elseif (strpos($type, ';')) {
list($type, ) = explode(';', $type);
}
// WARNING: $q == 0 means, that mime-type isn't supported!
if (array_key_exists($type, $this->responseTypes) and !array_key_exists($quality, $mimeTypes)) {
$mimeTypes[$quality] = $type;
}
}
// sort by quality descending
arsort($mimeTypes);
return current(array_values($mimeTypes));
}
/**
* Uses Request data to set some properties.
*
* @param Request $request Current Request object.
* @return $this
*/
public function setRequest(Request $request)
{
// send body if not a HEAD request
$this->send_body = !$request->is('HEAD');
// first try to set content type using parameter (if set)
if (!isset($request->content_type) || !$this->maybeSetContentType($request->content_type)) {
// now try using header (if set)
$this->content_type = http_negotiate_content_type(array_values($this->content_types));
}
// shall we gzip?
if (http_in_request_header('accept-encoding', 'gzip') && extension_loaded('zlib')) {
$this->gzip_body = true;
}
// For XHR/AJAX requests, don't cache response, nosniff, and deny iframes
if ($request->isXhr()) {
$this->setCacheHeaders(false);
$this->nosniff();
$this->denyIframes();
}
return $this;
}
