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<?php |
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namespace Cerbero\JsonObjects; |
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use Psr\Http\Message\MessageInterface; |
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use Psr\Http\Message\StreamInterface; |
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/** |
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* The data streaming. |
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* |
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*/ |
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class DataStreaming |
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{ |
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/** |
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* Stream content from the given data. |
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* |
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* @param mixed $data |
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* @return resource |
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* |
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* @throws JsonObjectsException |
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*/ |
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public function streamData($data) |
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{ |
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$method = 'stream' . ucfirst(gettype($data)); |
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if (method_exists($this, $method)) { |
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return $this->{$method}($data); |
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} |
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throw new JsonObjectsException('Unable to create a stream from the given data.'); |
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} |
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/** |
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* Stream content from the given resource |
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* |
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* @param mixed $resource |
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* @return resource |
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* |
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* @throws JsonObjectsException |
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*/ |
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public function streamResource($resource) |
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{ |
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if (is_resource($resource)) { |
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return $resource; |
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} |
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throw new JsonObjectsException('Unable to create a stream from an invalid resource.'); |
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} |
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/** |
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* Stream content from the given string |
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* |
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* @param string $string |
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* @return resource |
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* |
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* @throws JsonObjectsException |
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*/ |
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public function streamString(string $string) |
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{ |
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$stream = extension_loaded('zlib') ? @gzopen($string, 'rb') : @fopen($string, 'rb'); |
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if ($stream === false) { |
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throw new JsonObjectsException("Failed to open stream from: {$string}"); |
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} |
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return $stream; |
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} |
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/** |
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* Stream content from the given object |
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* |
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* @param mixed $object |
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* @return resource |
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* |
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* @throws JsonObjectsException |
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*/ |
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public function streamObject($object) |
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{ |
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if (!is_object($object)) { |
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throw new JsonObjectsException('Unable to stream content from object while providing ' . gettype($object)); |
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} |
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if ($object instanceof MessageInterface) { |
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$object = $object->getBody(); |
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} |
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if ($object instanceof StreamInterface) { |
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return $this->streamWrapper($object); |
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} |
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throw new JsonObjectsException('Unable to create a stream from ' . get_class($object)); |
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} |
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/** |
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* Stream content from the given stream wrapper |
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* |
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* @param \Psr\Http\Message\StreamInterface $stream |
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* @return resource |
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* |
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* @throws JsonObjectsException |
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*/ |
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public function streamWrapper(StreamInterface $stream) |
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{ |
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// Register the stream wrapper if not already registered |
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if (!in_array(StreamWrapper::NAME, stream_get_wrappers())) { |
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stream_wrapper_register(StreamWrapper::NAME, StreamWrapper::class); |
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} |
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// Retrieve a handler of the opened stream |
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$resource = @fopen(StreamWrapper::NAME . '://stream', 'rb', false, stream_context_create([ |
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StreamWrapper::NAME => compact('stream'), |
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])); |
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if ($resource === false) { |
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throw new JsonObjectsException('Failed to open stream from ' . get_class($stream)); |
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} |
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return $resource; |
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} |
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} |
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cerbero90 /
json-objects
