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<?php |
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declare(strict_types=1); |
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namespace DigitalCz\DigiSign\Stream; |
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use DigitalCz\DigiSign\Exception\RuntimeException; |
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use Psr\Http\Message\ResponseInterface; |
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/** |
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* Wrapper class for file response |
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*/ |
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final class FileResponse |
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{ |
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/** @var ResponseInterface */ |
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private $response; |
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/** @var FileStream */ |
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private $file; |
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public function __construct(ResponseInterface $response) |
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{ |
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$this->response = $response; |
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} |
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public function getResponse(): ResponseInterface |
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{ |
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return $this->response; |
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} |
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public function getFile(): FileStream |
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{ |
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if (!isset($this->file)) { |
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$body = $this->getResponse()->getBody(); |
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$handle = $body->detach(); |
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if ($handle === null) { |
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throw new RuntimeException('Unable to get body handle'); |
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} |
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$this->file = new FileStream($handle, $this->getContentLength(), $this->parseFilename()); |
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} |
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return $this->file; |
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} |
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/** |
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* @param string $path Path to directory or file |
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*/ |
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public function save(string $path): void |
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{ |
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$this->getFile()->save($path); |
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} |
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private function parseFilename(): string |
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{ |
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$contentDisposition = $this->getContentDisposition(); |
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// parse content-disposition header |
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preg_match_all( |
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"/filename[^;=\n]*=(?:(\\?['\"])(.*?)\1|(?:[^\s]+'.*?')?([^;\n]*))/i", |
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$contentDisposition, |
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$matches |
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); |
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end($matches[3]); |
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// if there are multiple matches, return the last |
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return $matches[3][key($matches[3])] ?? 'file'; |
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} |
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private function getContentLength(): int |
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{ |
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return (int)$this->getResponse()->getHeaderLine('Content-Length'); |
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} |
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private function getContentDisposition(): string |
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{ |
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return $this->getResponse()->getHeaderLine('Content-Disposition'); |
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} |
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} |
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digitalcz /
digisign
