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<?php
/**
* Class Response
* Simplified copy of Symfony/Http-Foundation Response
* to allow compatibility with frameworks
*
* @package Filemanager
*/
class Response {
const HTTP_CONTINUE = 100;
const HTTP_SWITCHING_PROTOCOLS = 101;
const HTTP_PROCESSING = 102; // RFC2518
const HTTP_OK = 200;
const HTTP_CREATED = 201;
const HTTP_ACCEPTED = 202;
const HTTP_NON_AUTHORITATIVE_INFORMATION = 203;
const HTTP_NO_CONTENT = 204;
const HTTP_RESET_CONTENT = 205;
const HTTP_PARTIAL_CONTENT = 206;
const HTTP_MULTI_STATUS = 207; // RFC4918
const HTTP_ALREADY_REPORTED = 208; // RFC5842
const HTTP_IM_USED = 226; // RFC3229
const HTTP_MULTIPLE_CHOICES = 300;
const HTTP_MOVED_PERMANENTLY = 301;
const HTTP_FOUND = 302;
const HTTP_SEE_OTHER = 303;
const HTTP_NOT_MODIFIED = 304;
const HTTP_USE_PROXY = 305;
const HTTP_RESERVED = 306;
const HTTP_TEMPORARY_REDIRECT = 307;
const HTTP_PERMANENTLY_REDIRECT = 308; // RFC7238
const HTTP_BAD_REQUEST = 400;
const HTTP_UNAUTHORIZED = 401;
const HTTP_PAYMENT_REQUIRED = 402;
const HTTP_FORBIDDEN = 403;
const HTTP_NOT_FOUND = 404;
const HTTP_METHOD_NOT_ALLOWED = 405;
const HTTP_NOT_ACCEPTABLE = 406;
const HTTP_PROXY_AUTHENTICATION_REQUIRED = 407;
const HTTP_REQUEST_TIMEOUT = 408;
const HTTP_CONFLICT = 409;
const HTTP_GONE = 410;
const HTTP_LENGTH_REQUIRED = 411;
const HTTP_PRECONDITION_FAILED = 412;
const HTTP_REQUEST_ENTITY_TOO_LARGE = 413;
const HTTP_REQUEST_URI_TOO_LONG = 414;
const HTTP_UNSUPPORTED_MEDIA_TYPE = 415;
const HTTP_REQUESTED_RANGE_NOT_SATISFIABLE = 416;
const HTTP_EXPECTATION_FAILED = 417;
const HTTP_I_AM_A_TEAPOT = 418; // RFC2324
const HTTP_UNPROCESSABLE_ENTITY = 422; // RFC4918
const HTTP_LOCKED = 423; // RFC4918
const HTTP_FAILED_DEPENDENCY = 424; // RFC4918
const HTTP_RESERVED_FOR_WEBDAV_ADVANCED_COLLECTIONS_EXPIRED_PROPOSAL = 425; // RFC2817
const HTTP_UPGRADE_REQUIRED = 426; // RFC2817
const HTTP_PRECONDITION_REQUIRED = 428; // RFC6585
const HTTP_TOO_MANY_REQUESTS = 429; // RFC6585
const HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE = 431; // RFC6585
const HTTP_INTERNAL_SERVER_ERROR = 500;
const HTTP_NOT_IMPLEMENTED = 501;
const HTTP_BAD_GATEWAY = 502;
const HTTP_SERVICE_UNAVAILABLE = 503;
const HTTP_GATEWAY_TIMEOUT = 504;
const HTTP_VERSION_NOT_SUPPORTED = 505;
const HTTP_VARIANT_ALSO_NEGOTIATES_EXPERIMENTAL = 506; // RFC2295
const HTTP_INSUFFICIENT_STORAGE = 507; // RFC4918
const HTTP_LOOP_DETECTED = 508; // RFC5842
const HTTP_NOT_EXTENDED = 510; // RFC2774
const HTTP_NETWORK_AUTHENTICATION_REQUIRED = 511; // RFC6585
/**
* Status codes translation table.
*
* The list of codes is complete according to the
* {@link http://www.iana.org/assignments/http-status-codes/ Hypertext Transfer Protocol (HTTP) Status Code Registry}
* (last updated 2012-02-13).
*
* Unless otherwise noted, the status code is defined in RFC2616.
*
* @var array
*/
public static $statusTexts = array(
100 => 'Continue',
101 => 'Switching Protocols',
102 => 'Processing', // RFC2518
200 => 'OK',
201 => 'Created',
202 => 'Accepted',
203 => 'Non-Authoritative Information',
204 => 'No Content',
205 => 'Reset Content',
206 => 'Partial Content',
207 => 'Multi-Status', // RFC4918
208 => 'Already Reported', // RFC5842
226 => 'IM Used', // RFC3229
300 => 'Multiple Choices',
301 => 'Moved Permanently',
302 => 'Found',
303 => 'See Other',
304 => 'Not Modified',
305 => 'Use Proxy',
306 => 'Reserved',
307 => 'Temporary Redirect',
308 => 'Permanent Redirect', // RFC7238
400 => 'Bad Request',
401 => 'Unauthorized',
402 => 'Payment Required',
403 => 'Forbidden',
404 => 'Not Found',
405 => 'Method Not Allowed',
406 => 'Not Acceptable',
407 => 'Proxy Authentication Required',
408 => 'Request Timeout',
409 => 'Conflict',
410 => 'Gone',
411 => 'Length Required',
412 => 'Precondition Failed',
413 => 'Request Entity Too Large',
414 => 'Request-URI Too Long',
415 => 'Unsupported Media Type',
416 => 'Requested Range Not Satisfiable',
417 => 'Expectation Failed',
418 => 'I\'m a teapot', // RFC2324
422 => 'Unprocessable Entity', // RFC4918
423 => 'Locked', // RFC4918
424 => 'Failed Dependency', // RFC4918
425 => 'Reserved for WebDAV advanced collections expired proposal', // RFC2817
426 => 'Upgrade Required', // RFC2817
428 => 'Precondition Required', // RFC6585
429 => 'Too Many Requests', // RFC6585
431 => 'Request Header Fields Too Large', // RFC6585
500 => 'Internal Server Error',
501 => 'Not Implemented',
502 => 'Bad Gateway',
503 => 'Service Unavailable',
504 => 'Gateway Timeout',
505 => 'HTTP Version Not Supported',
506 => 'Variant Also Negotiates (Experimental)', // RFC2295
507 => 'Insufficient Storage', // RFC4918
508 => 'Loop Detected', // RFC5842
510 => 'Not Extended', // RFC2774
511 => 'Network Authentication Required', // RFC6585
);
/**
* @var string
*/
protected $content;
/**
* @var int
*/
protected $statusCode;
/**
* @var string
*/
protected $statusText;
/**
* @var array
*/
public $headers;
/**
* @var string
*/
protected $version;
/**
* Construct the response
*
* @param mixed $content
* @param int $statusCode
* @param array $headers
*/
public function __construct($content = '', $statusCode = 200, $headers = array())
{
$this->setContent($content);
$this->setStatusCode($statusCode);
$this->headers = $headers;
$this->version = '1.1';
}
/**
* Set the content on the response.
*
* @param mixed $content
* @return $this
*/
public function setContent($content)
{
if ($content instanceof ArrayObject || is_array($content))
{
$this->headers['Content-Type'] = array('application/json');
$content = json_encode($content);
}
$this->content = $content;
}
/**
* Returns the Response as an HTTP string.
*
* The string representation of the Response is the same as the
* one that will be sent to the client only if the prepare() method
* has been called before.
*
* @return string The Response as an HTTP string
*
* @see prepare()
*/
public function __toString()
{
return
sprintf('HTTP/%s %s %s', $this->version, $this->statusCode, $this->statusText)."\r\n".
$this->headers."\r\n".
$this->getContent();
}
/**
* Sets the response status code.
*
* @param int $code HTTP status code
* @param mixed $text HTTP status text
*
* If the status text is null it will be automatically populated for the known
* status codes and left empty otherwise.
*
* @return Response
*
* @throws \InvalidArgumentException When the HTTP status code is not valid
*
* @api
*/
public function setStatusCode($code, $text = null)
{
$this->statusCode = $code = (int) $code;
if ($this->isInvalid()) {
throw new InvalidArgumentException(sprintf('The HTTP status code "%s" is not valid.', $code));
}
if (null === $text) {
$this->statusText = isset(self::$statusTexts[$code]) ? self::$statusTexts[$code] : '';
return $this;
}
if (false === $text) {
$this->statusText = '';
return $this;
}
$this->statusText = $text;
return $this;
}
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
/**
* Is response invalid?
*
* @return bool
*
* @api
*/
public function isInvalid()
{
return $this->statusCode < 100 || $this->statusCode >= 600;
}
/**
* Set a header on the Response.
*
* @param string $key
* @param string $value
* @param bool $replace
* @return $this
*/
public function header($key, $value, $replace = true)
{
if (empty($this->headers[$key]))
{
$this->headers[$key] = array();
}
if ($replace)
{
$this->headers[$key] = array($value);
}
else
{
$this->headers[$key][] = $value;
}
return $this;
}
/**
* Sends HTTP headers and content.
*
* @return Response
*
* @api
*/
public function send()
{
$this->sendHeaders();
$this->sendContent();
if (function_exists('fastcgi_finish_request')) {
fastcgi_finish_request();
}
return $this;
}
/**
* Sends content for the current web response.
*
* @return Response
*/
public function sendContent()
{
echo $this->content;
return $this;
}
/**
* Sends HTTP headers.
*
* @return Response
*/
public function sendHeaders()
{
// headers have already been sent by the developer
if (headers_sent()) {
return $this;
}
// status
header(sprintf('HTTP/%s %s %s', $this->version, $this->statusCode, $this->statusText), true, $this->statusCode);
// headers
foreach ($this->headers as $name => $values) {
if (is_array($values))
{
foreach ($values as $value)
{
header($name . ': ' . $value, false, $this->statusCode);
}
}
else
{
header($name . ': ' . $values, false, $this->statusCode);
}
}
return $this;
}
}