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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\Scope; |
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use Flipbox\Transform\Transformers\TransformerInterface; |
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use Flipbox\Transform\Transform\ArrayTransform as ConfigurableTransform; |
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use Flipbox\Transform\ParamBag; |
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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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* @property ConfigurableTransform $transform |
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*/ |
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class ArrayScope extends AbstractScope |
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{ |
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/** |
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* Scope constructor. |
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* @param ConfigurableTransform $transform |
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* @param string|null $scopeIdentifier |
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* @param array $parentScopes |
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*/ |
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public function __construct( |
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ConfigurableTransform $transform, |
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string $scopeIdentifier = null, |
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array $parentScopes = [] |
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) { |
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parent::__construct($transform, $scopeIdentifier, $parentScopes); |
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} |
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/** |
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* Is Requested. |
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* |
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* Check if - in relation to the current scope - this specific segment is allowed. |
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* That means, if a.b.c is requested and the current scope is a.b, then c is allowed. If the current |
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* scope is a then c is not allowed, even if it is there and potentially transformable. |
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* |
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* @internal |
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* |
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* @param string $checkScopeSegment |
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* |
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* @return bool Returns the new number of elements in the array. |
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*/ |
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protected function isRequested($checkScopeSegment): bool |
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{ |
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return in_array( |
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$this->scopeString($checkScopeSegment), |
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$this->transform->getIncludes() |
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); |
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} |
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/** |
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* Is Excluded. |
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* |
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* Check if - in relation to the current scope - this specific segment should |
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* be excluded. That means, if a.b.c is excluded and the current scope is a.b, |
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* then c will not be allowed in the transformation whether it appears in |
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* the list of default or available, requested includes. |
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* |
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* @internal |
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* |
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* @param string $checkScopeSegment |
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* |
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* @return bool |
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*/ |
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protected function isExcluded($checkScopeSegment): bool |
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{ |
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return in_array( |
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$this->scopeString($checkScopeSegment), |
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$this->transform->getExcludes() |
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); |
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} |
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/** |
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* @param TransformerInterface|callable $transformer |
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* @param mixed $data |
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* @return array |
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*/ |
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public function transform(callable $transformer, $data): array |
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{ |
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$includedData = []; |
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// Transform data |
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$transformedData = parent::transform($transformer, $data); |
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// Bail now |
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if (null === $transformedData) { |
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return $includedData; |
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} |
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if (is_string($transformedData)) { |
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$transformedData = [$transformedData]; |
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} |
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foreach ($transformedData as $key => $val) { |
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if (!$this->includeValue($transformer, $key)) { |
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continue; |
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} |
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$includedData[$key] = $this->parseValue($val, $data, $key); |
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} |
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// Return only the requested fields |
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$includedData = $this->filterFields($includedData); |
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return $includedData; |
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} |
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/** |
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* @param callable $transformer |
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* @param string $key |
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* @return bool |
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*/ |
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protected function includeValue(callable $transformer, string $key): bool |
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{ |
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// Ignore optional (that have not been explicitly requested) |
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if ($transformer instanceof TransformerInterface && |
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in_array($key, $transformer->getIncludes(), true) && |
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!$this->isRequested($key) |
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) { |
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return false; |
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} |
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// Ignore excludes |
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if ($this->isExcluded($key)) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Filter the provided data with the requested filter fields for |
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* the scope resource |
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* |
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* @internal |
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* |
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* @param array $data |
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* |
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* @return array |
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*/ |
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protected function filterFields(array $data): array |
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{ |
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$fields = $this->getFilterFields(); |
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if ($fields === null) { |
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return $data; |
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} |
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return array_intersect_key( |
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$data, |
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array_flip( |
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iterator_to_array($fields) |
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) |
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); |
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} |
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/** |
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* Return the requested filter fields for the scope resource |
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* |
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* @internal |
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* |
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* @return ParamBag|null |
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*/ |
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protected function getFilterFields() |
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{ |
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return $this->transform->getField( |
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$this->getScopeIdentifier() |
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); |
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} |
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/** |
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* @param string $checkScopeSegment |
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* @return string |
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*/ |
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private function scopeString(string $checkScopeSegment): string |
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{ |
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if ($this->parentScopes) { |
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$scopeArray = array_slice($this->parentScopes, 1); |
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array_push($scopeArray, $this->scopeIdentifier, $checkScopeSegment); |
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} else { |
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$scopeArray = [$checkScopeSegment]; |
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} |
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return implode('.', (array)$scopeArray); |
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} |
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} |
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This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.