<?php

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namespace GuzzleHttp\Psr7;

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use Psr\Http\Message\ResponseInterface;

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use Psr\Http\Message\StreamInterface;

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/**

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* PSR-7 response implementation.

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*/

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class Response implements ResponseInterface

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{

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use MessageTrait;

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/** @var array Map of standard HTTP status code/reason phrases */

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private static $phrases = [

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100 => 'Continue',

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101 => 'Switching Protocols',

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102 => 'Processing',

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200 => 'OK',

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201 => 'Created',

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202 => 'Accepted',

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203 => 'Non-Authoritative Information',

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204 => 'No Content',

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205 => 'Reset Content',

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206 => 'Partial Content',

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207 => 'Multi-status',

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208 => 'Already Reported',

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300 => 'Multiple Choices',

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301 => 'Moved Permanently',

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302 => 'Found',

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303 => 'See Other',

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304 => 'Not Modified',

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305 => 'Use Proxy',

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306 => 'Switch Proxy',

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307 => 'Temporary Redirect',

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400 => 'Bad Request',

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401 => 'Unauthorized',

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402 => 'Payment Required',

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403 => 'Forbidden',

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404 => 'Not Found',

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405 => 'Method Not Allowed',

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406 => 'Not Acceptable',

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407 => 'Proxy Authentication Required',

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408 => 'Request Time-out',

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409 => 'Conflict',

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410 => 'Gone',

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411 => 'Length Required',

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412 => 'Precondition Failed',

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413 => 'Request Entity Too Large',

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414 => 'Request-URI Too Large',

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415 => 'Unsupported Media Type',

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416 => 'Requested range not satisfiable',

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417 => 'Expectation Failed',

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418 => 'I\'m a teapot',

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422 => 'Unprocessable Entity',

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423 => 'Locked',

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424 => 'Failed Dependency',

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425 => 'Unordered Collection',

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426 => 'Upgrade Required',

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428 => 'Precondition Required',

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429 => 'Too Many Requests',

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431 => 'Request Header Fields Too Large',

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451 => 'Unavailable For Legal Reasons',

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500 => 'Internal Server Error',

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501 => 'Not Implemented',

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502 => 'Bad Gateway',

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503 => 'Service Unavailable',

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504 => 'Gateway Time-out',

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505 => 'HTTP Version not supported',

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506 => 'Variant Also Negotiates',

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507 => 'Insufficient Storage',

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508 => 'Loop Detected',

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511 => 'Network Authentication Required',

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];

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/** @var string */

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private $reasonPhrase = '';

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/** @var int */

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private $statusCode = 200;

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/**

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* @param int $status Status code

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* @param array $headers Response headers

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* @param string|resource|StreamInterface|null $body Response body

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* @param string $version Protocol version

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* @param string|null $reason Reason phrase (when empty a default will be used based on the status code)

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*/

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public function __construct(

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$status = 200,

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array $headers = [],

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$body = null,

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$version = '1.1',

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$reason = null

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) {

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$this->assertStatusCodeIsInteger($status);

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$status = (int) $status;

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$this->assertStatusCodeRange($status);

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$this->statusCode = $status;

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if ($body !== '' && $body !== null) {

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$this->stream = Utils::streamFor($body);

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}

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$this->setHeaders($headers);

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if ($reason == '' && isset(self::$phrases[$this->statusCode])) {

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$this->reasonPhrase = self::$phrases[$this->statusCode];

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} else {

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$this->reasonPhrase = (string) $reason;

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}

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$this->protocol = $version;

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}

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public function getStatusCode()

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{

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return $this->statusCode;

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}

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public function getReasonPhrase()

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{

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return $this->reasonPhrase;

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}

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public function withStatus($code, $reasonPhrase = '')

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{

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$this->assertStatusCodeIsInteger($code);

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$code = (int) $code;

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$this->assertStatusCodeRange($code);

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$new = clone $this;

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$new->statusCode = $code;

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if ($reasonPhrase == '' && isset(self::$phrases[$new->statusCode])) {

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$reasonPhrase = self::$phrases[$new->statusCode];

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}

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$new->reasonPhrase = (string) $reasonPhrase;

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return $new;

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}

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private function assertStatusCodeIsInteger($statusCode)

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{

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if (filter_var($statusCode, FILTER_VALIDATE_INT) === false) {

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throw new \InvalidArgumentException('Status code must be an integer value.');

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}

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}

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private function assertStatusCodeRange($statusCode)

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{

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if ($statusCode < 100 || $statusCode >= 600) {

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throw new \InvalidArgumentException('Status code must be an integer value between 1xx and 5xx.');

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}

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}

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}

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