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<?php |
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namespace kalanis\RemoteRequestPsr\Adapters; |
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use kalanis\RemoteRequest\RequestException; |
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use kalanis\RemoteRequestPsr\Http\Answer; |
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use Psr\Http\Message\StreamInterface; |
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use RuntimeException; |
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/** |
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* Class StreamAdapter |
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* @package kalanis\RemoteRequestPsr\Adapters |
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* Adapter of body of HTTP response |
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* Returns workable stream under interface |
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*/ |
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class StreamAdapter implements StreamInterface |
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{ |
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/** @var resource|null */ |
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protected $localStream = null; |
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protected int $offset = 0; |
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/** |
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* @param Answer $answer |
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* @throws RequestException |
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*/ |
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public function __construct(Answer $answer) |
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{ |
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$content = $answer->getBody(); |
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$this->localStream = is_resource($content) ? $content : $this->toStream($content); |
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} |
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/** |
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* @param string|int|float|bool|null $content |
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* @throws RequestException |
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* @return resource |
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*/ |
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protected function toStream($content) |
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{ |
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$stream = fopen('php://temp', 'rb+'); |
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if (false === $stream) { |
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// @codeCoverageIgnoreStart |
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throw new RequestException('Problem with php internals'); |
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} |
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// @codeCoverageIgnoreEnd |
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fwrite($stream, strval($content)); |
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return $stream; |
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} |
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public function __toString(): string |
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{ |
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try { |
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return strval(stream_get_contents($this->getLocalStream(), -1, 0)); |
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} catch (RuntimeException $ex) { |
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return ''; |
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} |
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} |
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public function close(): void |
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{ |
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try { |
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fclose($this->getLocalStream()); |
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$this->localStream = null; |
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} catch (RuntimeException $ex) { |
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// nothing to do |
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} |
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} |
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public function detach() |
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{ |
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$stream = $this->localStream; |
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$this->localStream = null; |
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$this->offset = 0; |
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return $stream; |
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} |
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public function getSize(): ?int |
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{ |
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$data = fstat($this->getLocalStream()); |
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return (false !== $data) ? $data['size'] : null; |
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} |
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public function tell(): int |
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{ |
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return intval(ftell($this->getLocalStream())); |
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} |
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public function eof(): bool |
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{ |
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return feof($this->getLocalStream()); |
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} |
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public function isSeekable(): bool |
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{ |
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return !empty($this->localStream); |
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} |
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public function seek(int $offset, int $whence = SEEK_SET): void |
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{ |
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fseek($this->getLocalStream(), $offset, $whence); |
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$this->offset = $this->tell(); |
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} |
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public function rewind(): void |
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{ |
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$this->seek(0); |
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} |
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public function isWritable(): bool |
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{ |
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return false; |
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} |
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public function write(string $string): int |
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{ |
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throw new RuntimeException('Cannot write into output stream.'); |
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} |
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public function isReadable(): bool |
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{ |
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return !empty($this->localStream); |
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} |
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public function read(int $length): string |
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{ |
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$data = strval(stream_get_contents($this->getLocalStream(), $length, $this->offset)); |
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$this->offset += strlen($data); |
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return $data; |
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} |
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public function getContents(): string |
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{ |
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$data = strval(stream_get_contents($this->getLocalStream(), -1, $this->offset)); |
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$this->offset += strlen($data); |
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return $data; |
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} |
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public function getMetadata(?string $key = null) |
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{ |
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try { |
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$data = stream_get_meta_data($this->getLocalStream()); |
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if (!is_null($key)) { |
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return (isset($data[$key])) ? $data[$key] : null; |
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} else { |
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return $data; |
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} |
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} catch (RuntimeException $ex) { |
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return null; |
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} |
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} |
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/** |
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* @throws RuntimeException |
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* @return resource |
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*/ |
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9 |
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protected function getLocalStream() |
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{ |
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if (empty($this->localStream)) { |
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throw new RuntimeException('No stream available!'); |
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} |
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return $this->localStream; |
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} |
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} |
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alex-kalanis /
remote-request-psr
