protected function negotiateLanguage()
{
if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
$found = false;
$langList = Util::sortByPriority($_SERVER['HTTP_ACCEPT_LANGUAGE']);
foreach ($langList as $lang => $quality) {
foreach (Defaults::$supportedLanguages as $supported) {
if (strcasecmp($supported, $lang) == 0) {
$found = true;
Defaults::$language = $supported;
break 2;
}
}
}
if (!$found) {
if (strpos($_SERVER['HTTP_ACCEPT_LANGUAGE'], '*') !== false) {
//use default language
} else {
//ignore
}
}
}
}
/**
* Parses the request to figure out the best format for response.
* Extension, if present, overrides the Accept header
*
* @return iFormat any class that implements iFormat
* @example JsonFormat
*/
protected function getResponseFormat()
{
// check if client has specified an extension
/**
*
* @var iFormat
*/
$format = null;
$extensions = explode('.', parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH));
while ($extensions) {
$extension = array_pop($extensions);
$extension = explode('/', $extension);
$extension = array_shift($extension);
if ($extension && isset($this->formatMap[$extension])) {
$format = $this->formatMap[$extension];
$format = is_string($format) ? new $format() : $format;
$format->setExtension($extension);
// echo "Extension $extension";
return $format;
}
}
// check if client has sent list of accepted data formats
if (isset($_SERVER['HTTP_ACCEPT'])) {
$acceptList = Util::sortByPriority($_SERVER['HTTP_ACCEPT']);
foreach ($acceptList as $accept => $quality) {
if (isset($this->formatMap[$accept])) {
$format = $this->formatMap[$accept];
$format = is_string($format) ? new $format() : $format;
//TODO: check if the string verfication above is needed
$format->setMIME($accept);
//echo "MIME $accept";
// Tell cache content is based on Accept header
@header('Vary: Accept');
return $format;
} elseif (false !== ($index = strrpos($accept, '+'))) {
$mime = substr($accept, 0, $index);
if (is_string(Defaults::$apiVendor) && 0 === strpos($mime, 'application/vnd.' . Defaults::$apiVendor . '-v')) {
$extension = substr($accept, $index + 1);
if (isset($this->formatMap[$extension])) {
//check the MIME and extract version
$version = intVal(substr($mime, 18 + strlen(Defaults::$apiVendor)));
if ($version > 0 && $version <= $this->apiVersion) {
$this->requestedApiVersion = $version;
$format = $this->formatMap[$extension];
$format = is_string($format) ? new $format() : $format;
$format->setExtension($extension);
// echo "Extension $extension";
Defaults::$useVendorMIMEVersioning = true;
@header('Vary: Accept');
return $format;
}
}
}
}
}
} else {
// RFC 2616: If no Accept header field is
// present, then it is assumed that the
// client accepts all media types.
$_SERVER['HTTP_ACCEPT'] = '*/*';
}
if (strpos($_SERVER['HTTP_ACCEPT'], '*') !== false) {
if (strpos($_SERVER['HTTP_ACCEPT'], 'application/*') !== false) {
$format = new JsonFormat();
} elseif (strpos($_SERVER['HTTP_ACCEPT'], 'text/*') !== false) {
$format = new XmlFormat();
} elseif (strpos($_SERVER['HTTP_ACCEPT'], '*/*') !== false) {
$format = $this->formatMap['default'];
$format = new $format();
}
}
if (empty($format)) {
// RFC 2616: If an Accept header field is present, and if the
// server cannot send a response which is acceptable according to
// the combined Accept field value, then the server SHOULD send
// a 406 (not acceptable) response.
$format = $this->formatMap['default'];
$format = new $format();
$this->responseFormat = $format;
$this->handleError(406, 'Content negotiation failed. ' . 'Try \'' . $format->getMIME() . '\' instead.');
} else {
// Tell cache content is based at Accept header
@header("Vary: Accept");
return $format;
}
}
protected function negotiateLanguage()
{
$accept_language = null;
if (is_null($this->requestFromObject)) {
if (array_key_exists('HTTP_ACCEPT_LANGUAGE', $_SERVER)) {
$accept_language = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
}
} else {
$accept_language = $this->requestFromObject->getHeader()->get('Accept-Language');
if (!is_null($accept_language)) {
$accept_language = $accept_language->getValue();
}
}
if (!is_null($accept_language)) {
$found = false;
$langList = Util::sortByPriority($accept_language);
foreach ($langList as $lang => $quality) {
foreach (Defaults::$supportedLanguages as $supported) {
if (strcasecmp($supported, $lang) == 0) {
$found = true;
Defaults::$language = $supported;
break 2;
}
}
}
if (!$found) {
if (strpos($accept_language, '*') !== false) {
//use default language
} else {
//ignore
}
}
}
}
