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<?php |
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namespace Mediadevs\Validator\Helpers; |
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class Arguments |
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{ |
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/** |
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* Delimiters, separators and prefixes for parsing the configuration. |
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*/ |
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private const FILTER_DELIMITER = '|'; |
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private const THRESHOLD_PREFIX = ':'; |
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private const LIST_SEPARATOR = ','; |
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private const REGEX_DELIMITER = '/'; |
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/** |
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* Regular expression patterns for parsing the configuration and extracting the arguments. |
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*/ |
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private const PATTERNS = array( |
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'filter' => '/(.*)' . self::THRESHOLD_PREFIX . '/', |
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'thresholds' => '/' . self::THRESHOLD_PREFIX . '(.*)/', |
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'regular_expression' => '/(?<=\\' . self::REGEX_DELIMITER . ')(.*?)(?=\\' . self::REGEX_DELIMITER . ')/', |
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); |
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/** |
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* The filter aliases from the defined registry class. |
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* |
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* @var array |
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*/ |
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private $aliases = array(); |
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/** |
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* Extracting all the filters from the configuration |
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* Then we proceed to parse those filters to extract the filters, thresholds, and regular expression patterns. |
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* |
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* @param array $configuration |
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* |
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* @return array |
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*/ |
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public function getArguments(array $configuration): array |
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{ |
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$arguments = array(); |
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// Parsing through all the fields and its assigned filters |
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foreach ($configuration as $field => $filters) { |
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// Parsing through the applied filters |
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foreach (explode(self::FILTER_DELIMITER, $filters) as $filter) { |
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$filterName = $this->filterArguments($filter, self::PATTERNS['filter']); |
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$filterThresholds = $this->filterArguments($filter, self::PATTERNS['thresholds']); |
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$thresholds = $this->getThresholds($filterThresholds); |
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// Extracting data from the configuration and storing it inside the arguments array |
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$arguments[] = [ |
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'field' => $field, |
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'filter' => $filterName, |
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'thresholds' => $thresholds, |
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]; |
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} |
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} |
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return $arguments; |
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} |
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/** |
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* Extracting the filter name from the arguments. |
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* |
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* @param string $arguments |
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* @param string $pattern |
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* |
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* @return string |
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*/ |
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private function filterArguments(string $arguments, string $pattern): string |
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{ |
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// Whether the string contains filter thresholds |
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if (strpos($arguments, self::THRESHOLD_PREFIX) !== false) { |
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// Extracting the filter name which is defined before the threshold prefix and returning it |
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preg_match($pattern, $arguments, $matches); |
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// Returning index #1 (Or the second item in the array) since the first item contains the delimiter |
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return $matches[1]; |
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} |
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// The string contains no threshold prefix so the blank string will be returned |
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return $arguments; |
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} |
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/** |
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* Extracting the filter threshold(s) from the arguments. |
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* |
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* @param string $thresholds |
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* |
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* @return array |
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*/ |
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private function getThresholds(string $thresholds): array |
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{ |
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$collection = array(); |
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$items = explode(self::LIST_SEPARATOR, $thresholds); |
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// Parsing through all thresholds (If there are any) and assigning the correct type to it. |
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if (count($items) > 0) { |
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foreach ($items as $threshold) { |
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$collection[] = $this->setCorrectThresholdType($threshold); |
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} |
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} |
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return $collection; |
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} |
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/** |
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* Determines which type the threshold is and assigning the right type to it. |
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* |
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* @param string $threshold |
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* |
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* @return string |
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*/ |
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private function setCorrectThresholdType(string $threshold): string |
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{ |
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if (filter_var($threshold, FILTER_VALIDATE_BOOLEAN)) { |
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return (bool) $threshold; |
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} |
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if (filter_var($threshold, FILTER_VALIDATE_INT)) { |
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return (int) $threshold; |
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} |
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if (filter_var($threshold, FILTER_VALIDATE_BOOLEAN)) { |
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return (float) $threshold; |
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} |
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return $threshold; |
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} |
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} |
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Mediadevs /
Validator
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