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<?php |
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/* |
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* This file is part of the runopencode/sax, an RunOpenCode project. |
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* |
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* (c) 2016 RunOpenCode |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace RunOpenCode\Sax; |
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use Psr\Http\Message\StreamInterface; |
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use RunOpenCode\Sax\Contract\SaxHandlerInterface; |
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use RunOpenCode\Sax\Contract\StreamAdapterInterface; |
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use RunOpenCode\Sax\StreamAdapter\DomDocumentAdapter; |
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use RunOpenCode\Sax\StreamAdapter\ResourceAdapter; |
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use RunOpenCode\Sax\StreamAdapter\SimpleXmlAdapter; |
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/** |
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* Class SaxParser |
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* |
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* Utility class for working with SAX handler and XML document. |
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* |
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* @package RunOpenCode\Sax |
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*/ |
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final class SaxParser |
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{ |
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/** |
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* @var StreamAdapterInterface[] |
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*/ |
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private $streamAdapters; |
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/** |
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* SaxParser constructor. |
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* |
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* @param StreamAdapterInterface[] $streamAdapters Stream adapters to register to parser. |
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*/ |
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public function __construct(array $streamAdapters = array()) |
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{ |
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$this->streamAdapters = array(); |
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foreach ($streamAdapters as $streamAdapter) { |
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$this->addStreamAdapter($streamAdapter); |
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} |
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} |
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/** |
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* Register stream adapter to parser. |
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* |
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* @param StreamAdapterInterface $streamAdapter Stream adapter to register. |
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* @return SaxParser $this Fluent interface. |
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*/ |
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public function addStreamAdapter(StreamAdapterInterface $streamAdapter) |
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{ |
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$this->streamAdapters[] = $streamAdapter; |
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return $this; |
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} |
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/** |
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* Parse XML document using provided SAX handler. |
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* |
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* @param SaxHandlerInterface $saxHandler Handler to user for parsing document. |
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* @param mixed $xmlDocument XML document source. |
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* @param callable|null $onResult Callable to execute when parsing is done. |
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*/ |
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public function parse(SaxHandlerInterface $saxHandler, $xmlDocument, callable $onResult = null) |
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{ |
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$xmlDocument = $this->getDocumentStream($xmlDocument); |
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$saxHandler->parse($xmlDocument, $onResult); |
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} |
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/** |
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* Convert XML document to stream source. |
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* |
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* @param mixed $xmlDocument XML document source. |
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* @return StreamInterface Converted XML document to stream. |
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*/ |
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private function getDocumentStream($xmlDocument) |
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{ |
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if ($xmlDocument instanceof StreamInterface) { |
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return $xmlDocument; |
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} |
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/** |
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* @var StreamAdapterInterface $streamAdapter |
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*/ |
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foreach ($this->streamAdapters as $streamAdapter) { |
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if ($streamAdapter->supports($xmlDocument)) { |
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return $streamAdapter->convert($xmlDocument); |
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} |
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} |
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throw new \RuntimeException(sprintf('Suitable XML document stream adapter is not registered for XML document of type "%s".', is_object($xmlDocument) ? get_class($xmlDocument) : gettype($xmlDocument))); |
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} |
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/** |
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* Default SAX parser factory. |
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* |
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* @param string $streamClass FQCN to use when converting to XML document source to stream. |
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* @return SaxParser New SAX parser instance. |
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*/ |
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public static function factory($streamClass = 'GuzzleHttp\\Psr7\\Stream') |
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{ |
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return new SaxParser(array( |
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new ResourceAdapter($streamClass), |
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new DomDocumentAdapter($streamClass), |
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new SimpleXmlAdapter($streamClass) |
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)); |
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} |
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} |
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RunOpenCode /
sax
