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<?php |
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namespace LegalThings\DataEnricher\Processor; |
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use LegalThings\DataEnricher\Node; |
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use LegalThings\DataEnricher\Processor; |
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/** |
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* Transform processor, apply transformation functions on data |
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*/ |
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class Transform implements Processor |
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{ |
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use Processor\Implementation; |
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/** |
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* Default transformation functions |
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* @var array |
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*/ |
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public static $defaultFunctions = [ |
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'hash' => 'hash', |
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'base64_encode' => 'base64_encode', |
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'base64_decode' => 'base64_decode', |
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'json_encode' => 'json_encode', |
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'json_decode' => 'json_decode', |
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'serialize' => 'serialize', |
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'unserialize' => 'unserialize', |
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'strtotime' => 'strtotime', |
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'date' => 'date' |
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]; |
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/** |
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* Allowed transformation functions |
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* @var array |
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*/ |
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public $functions; |
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/** |
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* Class constructor |
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* |
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* @param string $property Property key with the processing instruction |
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*/ |
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public function __construct($property) |
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{ |
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$this->property = $property; |
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$this->functions = static::$defaultFunctions; |
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} |
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/** |
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* Apply processing to a single node |
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* |
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* @param Node $node |
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*/ |
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public function applyToNode(Node $node) |
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{ |
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$transformations = (array)$node->getInstruction($this); |
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if (!isset($node->input)) { |
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return; |
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} |
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$value = $node->input; |
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if ($value instanceof Node) { |
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$value = $value->getResult(); |
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} |
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foreach ($transformations as $transformation) { |
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list($key, $arg) = explode(':', $transformation) + [null, null]; |
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if (!isset($this->functions[$key])) { |
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throw new \Exception("Unknown transformation '$transformation'"); |
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} |
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$fn = $this->functions[$key]; |
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$value = isset($arg) ? call_user_func($fn, $arg, $value) : call_user_func($fn, $value); |
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} |
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$node->setResult($value); |
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} |
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} |
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legalthings /
data-enricher
