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<?php |
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declare(strict_types = 1); |
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/** |
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* Micro |
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* |
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* @author Raffael Sahli <[email protected]> |
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* @copyright Copyright (c) 2017 gyselroth GmbH (https://gyselroth.com) |
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* @license MIT https://opensource.org/licenses/MIT |
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*/ |
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namespace Micro\Http; |
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use \Micro\Http; |
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use \Closure; |
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class Response |
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{ |
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/** |
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* Output format |
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* |
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* @var string |
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*/ |
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protected $output_format = 'json'; |
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/** |
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* Possible output formats |
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*/ |
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const OUTPUT_FORMATS = ['json', 'xml', 'text']; |
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/** |
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* Human readable output |
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* |
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* @var bool |
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*/ |
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protected $pretty_format = false; |
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/** |
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* Headers |
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* |
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* @var array |
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*/ |
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protected $headers = []; |
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/** |
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* Code |
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* |
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* @var int |
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*/ |
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protected $code = 200; |
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/** |
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* Body |
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* |
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* @var string |
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*/ |
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protected $body; |
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/** |
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* body only |
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* |
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* @var bool |
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*/ |
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protected $body_only = false; |
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/** |
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* Init response |
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* |
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* @return void |
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*/ |
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public function __construct() |
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{ |
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$this->setupFormats(); |
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} |
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/** |
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* Set header |
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* |
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* @param string $header |
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* @param string $value |
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* @return Response |
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*/ |
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public function setHeader(string $header, string $value): Response |
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{ |
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$this->headers[$header] = $value; |
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return $this; |
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} |
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/** |
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* Get headers |
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* |
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* @return array |
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*/ |
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public function getHeaders(): array |
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{ |
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return $this->headers; |
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} |
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/** |
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* Send headers |
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* |
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* @return Response |
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*/ |
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public function sendHeaders(): Response |
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{ |
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foreach ($this->headers as $header => $value) { |
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header($header.': '.$value); |
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} |
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return $this; |
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} |
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/** |
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* Set response code |
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* |
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* @param int $code |
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* @return Response |
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*/ |
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public function setCode(int $code): Response |
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{ |
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if (!array_key_exists($code, Http::STATUS_CODES)) { |
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throw new Exception('invalid http code set'); |
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} |
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$this->code = $code; |
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return $this; |
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} |
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/** |
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* Get response code |
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* |
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* @return int |
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*/ |
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public function getCode(): int |
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{ |
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return $this->code; |
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} |
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/** |
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* Set body |
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* |
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* @param mixed $body |
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* @param bool $body_only |
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* @return Response |
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*/ |
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public function setBody($body, bool $body_only = false): Response |
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{ |
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$this->body = $body; |
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$this->body_only = $body_only; |
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return $this; |
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} |
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/** |
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* Get body |
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* |
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* @return string |
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*/ |
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public function getBody() |
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{ |
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return $this->body; |
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} |
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/** |
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* Sends the actual response. |
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* |
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* @return void |
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*/ |
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public function send(): void |
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{ |
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$this->sendHeaders(); |
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$status = Http::STATUS_CODES[$this->code]; |
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header('HTTP/1.0 '.$this->code.' '.$status, true, $this->code); |
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if ($this->body === null && $this->code == 204) { |
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$this->terminate(); |
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} |
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if($this->body instanceof Closure) { |
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$body = $this->body(); |
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} else { |
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$body = $this->body; |
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} |
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if ($this->body_only === false && $this->output_format !== 'text') { |
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$body = ['data' => $body]; |
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$body['status'] = intval($this->code); |
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$body = array_reverse($body, true); |
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} |
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switch ($this->output_format) { |
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default: |
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case 'json': |
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echo $this->asJSON($body); |
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break; |
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case 'xml': |
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echo $this->asXML($body); |
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break; |
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case 'text': |
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echo $body; |
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break; |
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} |
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$this->terminate(); |
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} |
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/** |
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* Get output format |
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* |
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* @return string |
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*/ |
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public function getOutputFormat(): string |
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{ |
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return $this->output_format; |
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} |
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/** |
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* Convert response to human readable output |
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* |
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* @param bool $format |
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* @return Response |
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*/ |
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public function setPrettyFormat(bool $format): Response |
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{ |
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$this->pretty_format = (bool)$format; |
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return $this; |
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} |
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/** |
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* Set header Content-Length $body. |
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* |
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* @param string $body |
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* @return Response |
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*/ |
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public function setContentLength(string $body): Response |
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{ |
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header('Content-Length: '.strlen($body)); |
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return $this; |
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} |
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/** |
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* Converts $body to pretty json. |
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* |
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* @param mixed $body |
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* @return string |
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*/ |
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public function asJSON($body): string |
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{ |
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header('Content-Type: application/json; charset=utf-8'); |
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if ($this->pretty_format) { |
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$result = json_encode($body, JSON_PRETTY_PRINT); |
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} else { |
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$result = json_encode($body); |
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} |
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$this->setContentLength($result); |
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return $result; |
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} |
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/** |
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* Converts mixed data to XML |
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* |
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* @param mixed $data |
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* @param SimpleXMLElement $xml |
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* @param string $child_name |
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* @return string |
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*/ |
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public function toXML($data, Config $xml, string $child_name): string |
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{ |
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if (is_array($data)) { |
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foreach ($data as $k => $v) { |
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if (is_array($v)) { |
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(is_int($k)) ? $this->toXML($v, $xml->addChild($child_name), $v) : $this->toXML($v, $xml->addChild(strtolower($k)), $child_name); |
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} else { |
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(is_int($k)) ? $xml->addChild($child_name, $v) : $xml->addChild(strtolower($k), $v); |
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} |
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} |
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} else { |
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$xml->addChild($child_name, $data); |
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} |
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return $xml->asXML(); |
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} |
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/** |
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* Converts response to xml. |
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* |
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* @param mixed $body |
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* @return string |
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*/ |
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public function asXML($body): string |
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{ |
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header('Content-Type: application/xml; charset=utf-8'); |
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$root = new Config('<response></response>'); |
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$raw = $this->toXML($body, $root, 'node'); |
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if ($this->pretty_format) { |
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$raw = $this->prettyXml($raw); |
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} |
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$this->setContentLength($raw); |
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return $raw; |
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} |
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/** |
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* Pretty formatted xml |
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* |
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* @param string $xml |
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* @return string |
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*/ |
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public function prettyXml(string $xml): string |
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{ |
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$domxml = new \DOMDocument('1.0'); |
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$domxml->preserveWhiteSpace = false; |
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$domxml->formatOutput = true; |
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$domxml->loadXML($xml); |
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return $domxml->saveXML(); |
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} |
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/** |
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* Set the current output format. |
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* |
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* @param string $format a key of $outputForms |
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* @return Response |
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*/ |
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public function setOutputFormat(string $format): Response |
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{ |
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$this->output_format = $format; |
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return $this; |
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} |
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/** |
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* Abort after response |
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* |
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* @return void |
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*/ |
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public function terminate(): void |
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{ |
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exit(); |
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} |
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/** |
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* Setup formats. |
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* |
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* @return Response |
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*/ |
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public function setupFormats(): Response |
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{ |
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$pretty = array_key_exists('pretty', $_GET) && ($_GET['pretty'] != 'false' && $_GET['pretty'] != '0'); |
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$this->setPrettyFormat($pretty); |
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//through HTTP_ACCEPT |
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if (isset($_SERVER['HTTP_ACCEPT']) && strpos($_SERVER['HTTP_ACCEPT'], '*/*') === false) { |
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foreach (self::OUTPUT_FORMATS as $format) { |
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if (strpos($_SERVER['HTTP_ACCEPT'], $format) !== false) { |
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$this->output_format = $format; |
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break; |
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} |
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} |
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} |
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return $this; |
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} |
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} |
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Adding a
@return
annotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.