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<?php |
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declare(strict_types=1); |
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namespace JsonCollectionParser\Stream; |
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use Psr\Http\Message\MessageInterface; |
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use Psr\Http\Message\StreamInterface; |
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class DataStream |
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{ |
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/** |
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* @param mixed $input |
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* |
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* @throws StreamException |
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* |
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* @return resource |
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*/ |
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public static function get($input) |
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{ |
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$type = gettype($input); |
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if (method_exists(static::class, $type)) { |
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return static::{$type}($input); |
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} |
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throw new StreamException( |
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'Unable to create a stream from given input, must be one of [`object`, `resource`, `string`].' |
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); |
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} |
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/** |
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* @param resource $stream |
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* |
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* @return bool|null |
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*/ |
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public static function close($stream): ?bool |
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{ |
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if (!is_resource($stream)) { |
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return null; |
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} |
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return extension_loaded('zlib') ? gzclose($stream) : fclose($stream); |
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} |
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/** |
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* Handler for resource input type |
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* |
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* @param mixed $input |
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* |
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* @throws StreamException |
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* |
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* @return resource |
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*/ |
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protected static function resource($input) |
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{ |
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if (!is_resource($input)) { |
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throw new StreamException('Invalid resource: unable to create stream.'); |
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} |
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return $input; |
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} |
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/** |
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* Handler for string input type |
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* |
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* @param string $input |
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* |
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* @throws StreamException |
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* |
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* @return resource |
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*/ |
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protected static function string(string $input) |
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{ |
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if (!is_file($input)) { |
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throw new StreamException('File does not exist: `' . $input . '`.'); |
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} |
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$stream = extension_loaded('zlib') ? @gzopen($input, 'rb') : @fopen($input, 'rb'); |
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if ($stream === false) { |
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throw new StreamException('Unable to open file for reading: `' . $input . '`.'); |
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} |
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return $stream; |
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} |
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/** |
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* Handler for object input type |
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* |
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* @param MessageInterface|StreamInterface $object |
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* |
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* @throws StreamException |
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* |
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* @return resource |
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*/ |
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protected static function object($object) |
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{ |
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if (!($object instanceof MessageInterface || $object instanceof StreamInterface)) { |
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throw new StreamException( |
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'Unable to create stream from `' |
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. get_class($object) |
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. '`, must be one of `MessageInterface` or `StreamInterface`.' |
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); |
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} |
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$object = $object instanceof MessageInterface ? $object->getBody() : $object; |
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if (!$object instanceof StreamInterface) { |
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throw new StreamException( |
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'Unable to create a stream from `' |
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. get_class($object) |
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. '`, must be `StreamInterface`.' |
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); |
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} |
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return static::streamWrapper($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 StreamInterface $stream |
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* |
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* @throws StreamException |
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* |
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* @return resource |
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*/ |
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protected static function streamWrapper(StreamInterface $stream) |
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{ |
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if (!in_array(StreamWrapper::NAME, stream_get_wrappers())) { |
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stream_wrapper_register(StreamWrapper::NAME, StreamWrapper::class); |
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} |
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$resource = @fopen( |
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StreamWrapper::NAME . '://stream', |
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'rb', |
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false, |
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stream_context_create([StreamWrapper::NAME => compact('stream')]) |
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); |
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if ($resource === false) { |
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throw new StreamException('Failed to open stream from `' . get_class($stream) . '`'); |
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} |
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return $resource; |
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} |
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} |
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MAXakaWIZARD /
JsonCollectionParser
