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<?php |
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/** |
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* @author Flipbox Factory |
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* @copyright Copyright (c) 2017, Flipbox Digital |
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* @link https://github.com/flipbox/transform/releases/latest |
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* @license https://github.com/flipbox/transform/blob/master/LICENSE |
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*/ |
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namespace Flipbox\Transform\Helpers; |
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use Closure; |
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use Flipbox\Transform\Transformers\TransformerIncludesInterface; |
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use Flipbox\Transform\Transformers\TransformerInterface; |
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/** |
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* @author Flipbox Factory <[email protected]> |
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* @since 1.0.0 |
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*/ |
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class TransformerHelper |
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{ |
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/** |
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* @param $transformer |
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* @return bool |
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*/ |
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public static function isTransformer($transformer): bool |
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{ |
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return (is_object($transformer) && ($transformer instanceof Closure)) || |
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$transformer instanceof TransformerInterface; |
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} |
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/** |
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* @param $transformer |
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* @return bool |
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*/ |
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public static function isTransformerClass($transformer): bool |
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{ |
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return is_string($transformer) && |
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( |
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is_subclass_of($transformer, TransformerInterface::class) || |
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method_exists($transformer, '__invoke') // TODO - REVIEW PUBLIC ACCESS |
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); |
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} |
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/** |
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* @param $transformer |
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* @return null|callable|TransformerInterface |
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*/ |
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public static function resolve($transformer) |
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{ |
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if (static::isTransformer($transformer)) { |
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return $transformer; |
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} |
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if (static::isTransformerClass($transformer)) { |
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return new $transformer(); |
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} |
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return null; |
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} |
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/** |
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* @param TransformerIncludesInterface $transformer |
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* @param string $key |
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* @return bool |
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*/ |
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public static function inInclude(TransformerIncludesInterface $transformer, string $key): bool |
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{ |
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return self::findInArray($transformer->getIncludes(), $key) !== null; |
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} |
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/** |
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* @param array $includes |
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* @return array |
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*/ |
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public static function normalizeIncludes(array $includes): array |
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{ |
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foreach ($includes as $k => $v) { |
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if (is_string($v) && ($pos = strrpos($v, '.')) !== false) { |
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$v = [substr($v, 0, $pos) => [substr($v, $pos + 1)]]; |
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} |
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// normalize sub-includes |
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$v = is_array($v) ? static::normalizeIncludes($v) : $v; |
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if (is_numeric($k)) { |
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unset($includes[$k]); |
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if (is_array($v)) { |
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$k = key($v); |
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$v = reset($v); |
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} else { |
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$k = $v; |
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} |
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} |
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$includes[$k] = $v; |
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if (($pos = strrpos($k, '.')) !== false) { |
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$includes[substr($k, 0, $pos)] = [substr($k, $pos + 1) => $includes[$k]]; |
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unset($includes[$k]); |
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} |
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} |
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return $includes; |
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} |
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/** |
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* Retrieves the value of an array element or object property with the given key or property name. |
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* |
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* @param $array |
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* @param $key |
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* @param null $default |
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* @return mixed|null |
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*/ |
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private static function findInArray(array $array, string $key, $default = null) |
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{ |
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if (($pos = strrpos($key, '.')) !== false) { |
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$array = self::findInArray($array, substr($key, 0, $pos), $default); |
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$key = substr($key, $pos + 1); |
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} |
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return is_array($array) && array_key_exists($key, $array) ? $array[$key] : $default; |
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} |
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} |
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flipbox /
transform
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