private function getBestFormat($app)
{
$negotiator = new \Negotiation\FormatNegotiator();
$acceptHeader = $app->request->headers->get('accept');
$priorities = array('application/json', 'application/xml', 'text/plain', '*/*');
return $negotiator->getBestFormat($acceptHeader, $priorities);
}
/**
* @return \Illuminate\Http\Response
*/
public function index()
{
// Use content negotiation to determine the correct format to return
$negotiator = new \Negotiation\FormatNegotiator();
$acceptHeader = Request::header('accept');
// Set priorities to json (if the app requests json provide it in favor of html)
$priorities = array('application/json', 'text/html', '*/*');
// Get the best appropriate content type
$result = $negotiator->getBest($acceptHeader, $priorities);
// Default to html if $result is not set
$val = "text/html";
if (isset($result)) {
$val = $result->getValue();
}
// See what kind of content we should return
switch ($val) {
case "text/html":
// In case we want to return html, just let
// Laravel render the view and send the headers
return Response::view('route.planner')->header('Content-Type', "text/html")->header('Vary', 'accept');
break;
case "application/json":
default:
// In case we want to return JSON(LD) or something else, generate
// our JSON by calling our static function 'getJSON()'
return Response::make($this::getJSON())->header('Content-Type', "application/json")->header('Vary', 'accept');
break;
}
}
protected function negotiateType()
{
$this->content_return_type = 'html';
//Default
if ($this->getHeader('ACCEPT', false)) {
$negotiator = new \Negotiation\FormatNegotiator();
$acceptable_types = array('html', '*/*');
$acceptable_types = array('html', 'json', 'xml', '*/*');
$this->content_return_type = $negotiator->getBestFormat($this->getHeader('ACCEPT'), $acceptable_types);
if ($this->content_return_type == '*/*') {
$this->content_return_type = 'html';
}
}
}
/**
* Handles json encoding, adding the content type headers and optional callback function.
* @param array $data the data to be returned.
*/
private function returnJson($data)
{
if (filter_input(INPUT_GET, 'callback', FILTER_SANITIZE_STRING)) {
header("Content-type: application/javascript; charset=utf-8");
// wrap with JSONP callback
echo filter_input(INPUT_GET, 'callback', FILTER_UNSAFE_RAW) . "(" . json_encode($data) . ");";
} else {
// negotiate suitable format
$negotiator = new \Negotiation\FormatNegotiator();
$priorities = array('application/json', 'application/ld+json');
$best = filter_input(INPUT_SERVER, 'HTTP_ACCEPT', FILTER_SANITIZE_STRING) ? $negotiator->getBest(filter_input(INPUT_SERVER, 'HTTP_ACCEPT', FILTER_SANITIZE_STRING), $priorities) : null;
$format = $best !== null ? $best->getValue() : $priorities[0];
header("Content-type: {$format}; charset=utf-8");
header("Vary: Accept");
// inform caches that we made a choice based on Accept header
echo json_encode($data);
}
}
<?php
$loader = (require_once __DIR__ . '/vendor/autoload.php');
\Doctrine\Common\Annotations\AnnotationRegistry::registerLoader('class_exists');
$shop = new \Test\Shop();
$formatNegotiator = new \Negotiation\FormatNegotiator();
$formatNegotiator->registerFormat('json', ['application/vnd.meshop+json;version=1', 'application/vnd.meshop+json;version=2'], true);
$formatNegotiator->registerFormat('xml', ['application/vnd.meshop+xml;version=1', 'application/vnd.meshop+xml;version=2'], true);
$shop = new \Negotiation\Stack\Negotiation($shop, $formatNegotiator, null, null, ['format_priorities' => ['application/vnd.meshop+json;version=2', 'application/vnd.meshop+xml;version=2', 'application/vnd.meshop+json;version=1', 'application/vnd.meshop+xml;version=1', 'application/hal+json', 'application/json'], 'language_priorities' => []]);
return $shop;
/**
* Shows a train or train data, based on the accept-header.
* @param $station_id
* @param $liveboard_id
* @return array
* @throws EasyRdf_Exception
*/
public function specificTrain($station_id, $liveboard_id)
{
$negotiator = new \Negotiation\FormatNegotiator();
$acceptHeader = Request::header('accept');
$priorities = array('application/json', 'text/html', '*/*');
$result = $negotiator->getBest($acceptHeader, $priorities);
$val = $result->getValue();
//get the right date-time to query
$datetime = substr($liveboard_id, 0, 12);
$datetime = strtotime($datetime);
$archived = false;
if ($datetime < strtotime("now")) {
$archived = true;
}
switch ($val) {
case "text/html":
// Convert id to string for interpretation by old API
$stationStringName = \hyperRail\StationString::convertToString($station_id);
if (!$archived) {
// Set up path to old api
$URL = "http://api.irail.be/liveboard/?station=" . urlencode($stationStringName->name) . "&date=" . date("mmddyy", $datetime) . "&time=" . date("Hi", $datetime) . "&fast=true&lang=nl&format=json";
// Get the contents of this path
$data = file_get_contents($URL);
// Convert the data to the new liveboard object
$newData = \hyperRail\FormatConverter::convertLiveboardData($data, $station_id);
// Read new liveboard object and return the page but load data
foreach ($newData['@graph'] as $graph) {
if (strpos($graph['@id'], $liveboard_id) !== false) {
return View::make('stations.departuredetail')->with('station', $graph)->with('departureStation', $stationStringName);
}
}
App::abort(404);
} else {
// If no match is found, attempt to look in the archive
// Fetch file using curl
$ch = curl_init("http://archive.irail.be/" . 'irail?subject=' . urlencode('http://irail.be/stations/NMBS/' . $station_id . '/departures/' . $liveboard_id));
curl_setopt($ch, CURLOPT_HEADER, 0);
$request_headers[] = 'Accept: text/turtle';
curl_setopt($ch, CURLOPT_HTTPHEADER, $request_headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$turtle = curl_exec($ch);
curl_close($ch);
// Convert turtle to json-ld
// Create a new graph
$graph = new EasyRdf_Graph();
if (empty($_REQUEST['data'])) {
// Load the sample information
$graph->parse($turtle, 'turtle');
}
// Export to JSON LD
$format = EasyRdf_Format::getFormat('jsonld');
$output = $graph->serialise($format);
if (!is_scalar($output)) {
$output = var_export($output, true);
}
// First, define the context
$context = array("delay" => "http://semweb.mmlab.be/ns/rplod/delay", "platform" => "http://semweb.mmlab.be/ns/rplod/platform", "scheduledDepartureTime" => "http://semweb.mmlab.be/ns/rplod/scheduledDepartureTime", "headsign" => "http://vocab.org/transit/terms/headsign", "routeLabel" => "http://semweb.mmlab.be/ns/rplod/routeLabel", "stop" => array("@id" => "http://semweb.mmlab.be/ns/rplod/stop", "@type" => "@id"), "seeAlso" => array("@id" => "http://www.w3.org/2000/01/rdf-schema#seeAlso", "@type" => "@id"));
// Next, encode the context as JSON
$jsonContext = json_encode($context);
// Compact the JsonLD by using @context
$compacted = JsonLD::compact($output, $jsonContext);
// Print the resulting JSON-LD!
$urlToFind = 'NMBS/' . $station_id . '/departures/' . $liveboard_id;
$stationDataFallback = json_decode(JsonLD::toString($compacted, true));
foreach ($stationDataFallback->{'@graph'} as $graph) {
if (strpos($graph->{'@id'}, $urlToFind) !== false) {
return View::make('stations.departurearchive')->with('station', $graph)->with('departureStation', $stationStringName);
}
}
App::abort(404);
}
break;
case "application/json":
case "application/ld+json":
default:
$stationStringName = \hyperRail\StationString::convertToString($station_id);
if (!$archived) {
$URL = "http://api.irail.be/liveboard/?station=" . urlencode($stationStringName->name) . "&date=" . date("mmddyy", $datetime) . "&time=" . date("Hi", $datetime) . "&fast=true&lang=nl&format=json";
$data = file_get_contents($URL);
$newData = \hyperRail\FormatConverter::convertLiveboardData($data, $station_id);
foreach ($newData['@graph'] as $graph) {
if (strpos($graph['@id'], $liveboard_id) !== false) {
$context = array("delay" => "http://semweb.mmlab.be/ns/rplod/delay", "platform" => "http://semweb.mmlab.be/ns/rplod/platform", "scheduledDepartureTime" => "http://semweb.mmlab.be/ns/rplod/scheduledDepartureTime", "headsign" => "http://vocab.org/transit/terms/headsign", "routeLabel" => "http://semweb.mmlab.be/ns/rplod/routeLabel", "stop" => array("@id" => "http://semweb.mmlab.be/ns/rplod/stop", "@type" => "@id"));
return array("@context" => $context, "@graph" => $graph);
}
}
App::abort(404);
} else {
// If no match is found, attempt to look in the archive
// Fetch file using curl
$ch = curl_init("http://archive.irail.be/" . 'irail?subject=' . urlencode('http://irail.be/stations/NMBS/' . $station_id . '/departures/' . $liveboard_id));
curl_setopt($ch, CURLOPT_HEADER, 0);
$request_headers[] = 'Accept: text/turtle';
curl_setopt($ch, CURLOPT_HTTPHEADER, $request_headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$turtle = curl_exec($ch);
curl_close($ch);
// Convert turtle to json-ld
// Create a new graph
$graph = new EasyRdf_Graph();
if (empty($_REQUEST['data'])) {
// Load the sample information
$graph->parse($turtle, 'turtle');
}
// Export to JSON LD
$format = EasyRdf_Format::getFormat('jsonld');
$output = $graph->serialise($format);
if (!is_scalar($output)) {
$output = var_export($output, true);
}
// First, define the context
$context = array("delay" => "http://semweb.mmlab.be/ns/rplod/delay", "platform" => "http://semweb.mmlab.be/ns/rplod/platform", "scheduledDepartureTime" => "http://semweb.mmlab.be/ns/rplod/scheduledDepartureTime", "headsign" => "http://vocab.org/transit/terms/headsign", "routeLabel" => "http://semweb.mmlab.be/ns/rplod/routeLabel", "stop" => array("@id" => "http://semweb.mmlab.be/ns/rplod/stop", "@type" => "@id"), "seeAlso" => array("@id" => "http://www.w3.org/2000/01/rdf-schema#seeAlso", "@type" => "@id"));
// Next, encode the context as JSON
$jsonContext = json_encode($context);
// Compact the JsonLD by using @context
$compacted = JsonLD::compact($output, $jsonContext);
// Print the resulting JSON-LD!
$urlToFind = 'NMBS/' . $station_id . '/departures/' . $liveboard_id;
$stationDataFallback = json_decode(JsonLD::toString($compacted, true));
foreach ($stationDataFallback->{'@graph'} as $graph) {
if (strpos($graph->{'@id'}, $urlToFind) !== false) {
return array("@context" => $context, "@graph" => $graph);
}
}
App::abort(404);
}
break;
}
}
