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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 object $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 $object) |
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{ |
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if ($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 $stream) |
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{ |
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// Register this class as stream wrapper if not already registered |
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if (!in_array('cerbero-json-objects', stream_get_wrappers())) { |
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stream_wrapper_register('cerbero-json-objects', static::class); |
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} |
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$mode = $this->getModeByStream($stream); |
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// Retrieve a handler of the opened stream |
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$resource = @fopen('cerbero-json-objects://stream', $mode, false, stream_context_create([ |
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'cerbero-json-objects' => compact('stream'), |
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])); |
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if ($resource === false) { |
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throw new JsonObjectsException('Failed to open stream from the given stream wrapper.'); |
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} |
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return $resource; |
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} |
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/** |
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* Retrieve the mode to open the given stream |
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* |
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* @param \Psr\Http\Message\StreamInterface $stream |
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* @return string |
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* |
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* @throws JsonObjectsException |
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*/ |
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8 |
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private function getModeByStream(StreamInterface $stream) : string |
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{ |
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8 |
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if ($stream->isReadable()) { |
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return $stream->isWritable() ? 'r+b' : 'rb'; |
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} |
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2 |
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if ($stream->isWritable()) { |
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return 'wb'; |
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} |
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throw new JsonObjectsException('The stream is not readable or writable.'); |
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} |
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} |
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cerbero90 /
json-objects
