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<?php
namespace Mpdf\Http;
use Psr\Http\Message\StreamInterface;
/**
* PSR-7 URI implementation ported from nyholm/psr7 and adapted for PHP 5.6
*
* @link https://github.com/Nyholm/psr7/blob/master/src/Uri.php
*/
class Response implements \Psr\Http\Message\ResponseInterface
{
/** @var array Map of standard HTTP status code/reason phrases */
private static $phrases = [
100 => 'Continue', 101 => 'Switching Protocols', 102 => 'Processing',
200 => 'OK', 201 => 'Created', 202 => 'Accepted', 203 => 'Non-Authoritative Information', 204 => 'No Content', 205 => 'Reset Content', 206 => 'Partial Content', 207 => 'Multi-status', 208 => 'Already Reported',
300 => 'Multiple Choices', 301 => 'Moved Permanently', 302 => 'Found', 303 => 'See Other', 304 => 'Not Modified', 305 => 'Use Proxy', 306 => 'Switch Proxy', 307 => 'Temporary Redirect',
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 Time-out', 409 => 'Conflict', 410 => 'Gone', 411 => 'Length Required', 412 => 'Precondition Failed', 413 => 'Request Entity Too Large', 414 => 'Request-URI Too Large', 415 => 'Unsupported Media Type', 416 => 'Requested range not satisfiable', 417 => 'Expectation Failed', 418 => 'I\'m a teapot', 422 => 'Unprocessable Entity', 423 => 'Locked', 424 => 'Failed Dependency', 425 => 'Unordered Collection', 426 => 'Upgrade Required', 428 => 'Precondition Required', 429 => 'Too Many Requests', 431 => 'Request Header Fields Too Large', 451 => 'Unavailable For Legal Reasons',
500 => 'Internal Server Error', 501 => 'Not Implemented', 502 => 'Bad Gateway', 503 => 'Service Unavailable', 504 => 'Gateway Time-out', 505 => 'HTTP Version not supported', 506 => 'Variant Also Negotiates', 507 => 'Insufficient Storage', 508 => 'Loop Detected', 511 => 'Network Authentication Required',
];
/** @var string */
private $reasonPhrase;
/** @var int */
private $statusCode;
/** @var array Map of all registered headers, as original name => array of values */
private $headers = [];
/** @var array Map of lowercase header name => original name at registration */
private $headerNames = [];
/** @var string */
private $protocol;
/** @var \Psr\Http\Message\StreamInterface */
private $stream;
/**
* @param int $status Status code
* @param array $headers Response headers
* @param string|resource|StreamInterface|null $body Response body
* @param string $version Protocol version
* @param string|null $reason Reason phrase (when empty a default will be used based on the status code)
*/
public function __construct($status = 200, array $headers = [], $body = null, $version = '1.1', $reason = null)
{
// If we got no body, defer initialization of the stream until Response::getBody()
if ('' !== $body && null !== $body) {
$this->stream = Stream::create($body);
}
$this->statusCode = $status;
$this->setHeaders($headers);
if (null === $reason && isset(self::$phrases[$this->statusCode])) {
$this->reasonPhrase = self::$phrases[$status];
} else {
$this->reasonPhrase = isset($reason) ? $reason : '';
}
$this->protocol = $version;
}
public function getStatusCode()
{
return $this->statusCode;
}
public function getReasonPhrase()
{
return $this->reasonPhrase;
}
public function withStatus($code, $reasonPhrase = '')
{
if (!\is_int($code) && !\is_string($code)) {
throw new \InvalidArgumentException('Status code has to be an integer');
}
$code = (int) $code;
if ($code < 100 || $code > 599) {
throw new \InvalidArgumentException(\sprintf('Status code has to be an integer between 100 and 599. A status code of %d was given', $code));
}
$new = clone $this;
$new->statusCode = $code;
if ((null === $reasonPhrase || '' === $reasonPhrase) && isset(self::$phrases[$new->statusCode])) {
$reasonPhrase = self::$phrases[$new->statusCode];
}
$new->reasonPhrase = $reasonPhrase;
return $new;
}
public function getProtocolVersion()
{
return $this->protocol;
}
public function withProtocolVersion($version)
{
if ($this->protocol === $version) {
return $this;
}
$new = clone $this;
$new->protocol = $version;
return $new;
}
public function getHeaders()
{
return $this->headers;
}
public function hasHeader($header)
{
return isset($this->headerNames[strtolower($header)]);
}
public function getHeader($header)
{
$header = strtolower($header);
if (!isset($this->headerNames[$header])) {
return [];
}
$header = $this->headerNames[$header];
return $this->headers[$header];
}
public function getHeaderLine($header)
{
return implode(', ', $this->getHeader($header));
}
public function withHeader($header, $value)
{
if (!is_array($value)) {
$value = [$value];
}
$value = $this->trimHeaderValues($value);
$normalized = strtolower($header);
$new = clone $this;
if (isset($new->headerNames[$normalized])) {
unset($new->headers[$new->headerNames[$normalized]]);
}
$new->headerNames[$normalized] = $header;
$new->headers[$header] = $value;
return $new;
}
public function withAddedHeader($header, $value)
{
if (!is_array($value)) {
$value = [$value];
}
$value = $this->trimHeaderValues($value);
$normalized = strtolower($header);
$new = clone $this;
if (isset($new->headerNames[$normalized])) {
$header = $this->headerNames[$normalized];
$new->headers[$header] = array_merge($this->headers[$header], $value);
} else {
$new->headerNames[$normalized] = $header;
$new->headers[$header] = $value;
}
return $new;
}
public function withoutHeader($header)
{
$normalized = strtolower($header);
if (!isset($this->headerNames[$normalized])) {
return $this;
}
$header = $this->headerNames[$normalized];
$new = clone $this;
unset($new->headers[$header], $new->headerNames[$normalized]);
return $new;
}
public function getBody()
{
if (!$this->stream) {
$this->stream = Stream::create('');
}
return $this->stream;
}
public function withBody(StreamInterface $body)
{
if ($body === $this->stream) {
return $this;
}
$new = clone $this;
$new->stream = $body;
return $new;
}
private function setHeaders(array $headers)
{
$this->headerNames = $this->headers = [];
foreach ($headers as $header => $value) {
if (!is_array($value)) {
$value = [$value];
}
$value = $this->trimHeaderValues($value);
$normalized = strtolower($header);
if (isset($this->headerNames[$normalized])) {
$header = $this->headerNames[$normalized];
$this->headers[$header] = array_merge($this->headers[$header], $value);
} else {
$this->headerNames[$normalized] = $header;
$this->headers[$header] = $value;
}
}
}
/**
* Trims whitespace from the header values.
*
* Spaces and tabs ought to be excluded by parsers when extracting the field value from a header field.
*
* header-field = field-name ":" OWS field-value OWS
* OWS = *( SP / HTAB )
*
* @param string[] $values Header values
*
* @return string[] Trimmed header values
*
* @see https://tools.ietf.org/html/rfc7230#section-3.2.4
*/
private function trimHeaderValues(array $values)
{
return array_map(function ($value) {
return trim($value, " \t");
}, $values);
}
}
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