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<?php |
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declare(strict_types = 1); |
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namespace hanneskod\clean; |
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final class Rule implements ValidatorInterface |
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{ |
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private ?string $default; |
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private ?string $errorMsg; |
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/** |
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* @var array<callable> Pre match filters |
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*/ |
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private array $pre; |
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/** |
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* @var array<callable> Post match filters |
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*/ |
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private array $post; |
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/** |
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* @var array<callable> |
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*/ |
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private array $matchers; |
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/** |
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* @param array<callable> $pre |
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* @param array<callable> $matchers |
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* @param array<callable> $post |
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*/ |
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public function __construct( |
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array $pre = [], |
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array $matchers = [], |
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array $post = [], |
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?string $default = null, |
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?string $errorMsg = null |
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) { |
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$this->pre = $pre; |
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$this->post = $post; |
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$this->matchers = $matchers; |
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$this->default = $default; |
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$this->errorMsg = $errorMsg; |
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} |
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/** |
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* Create a new Rule with one or more pre match filters |
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* |
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* A filter should take a raw value and return the filtered value. |
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*/ |
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public function pre(callable ...$pre): Rule |
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{ |
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return new static([...$this->pre, ...$pre], $this->matchers, $this->post, $this->default, $this->errorMsg); |
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} |
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/** |
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* Create a new Rule with one or more matchers |
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* |
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* A matcher should take a raw value and return true if value is a match |
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* and false if it is not. |
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*/ |
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public function match(callable ...$match): Rule |
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{ |
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return new static($this->pre, [...$this->matchers, ...$match], $this->post, $this->default, $this->errorMsg); |
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} |
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/** |
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* Create a new Rule with one or more post match filters |
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* |
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* A filter should take a raw value and return the filtered value. |
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*/ |
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public function post(callable ...$post): Rule |
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{ |
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return new static($this->pre, $this->matchers, [...$this->post, ...$post], $this->default, $this->errorMsg); |
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} |
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/** |
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* Create a new Rule with default value |
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*/ |
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public function def(string $default): Rule |
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{ |
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return new static($this->pre, $this->matchers, $this->post, $default, $this->errorMsg); |
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} |
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/** |
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* Create a new Rule with exception message |
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* |
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* %s is replaced with parent exception message |
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*/ |
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public function msg(string $errorMsg): Rule |
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{ |
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return new static($this->pre, $this->matchers, $this->post, $this->default, $errorMsg); |
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} |
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public function applyTo($data): ResultInterface |
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{ |
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try { |
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if (is_null($data)) { |
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if (!isset($this->default)) { |
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throw new Exception('value missing'); |
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} |
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$data = $this->default; |
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} |
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foreach ($this->pre as $filter) { |
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$data = $filter($data); |
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} |
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foreach ($this->matchers as $matcherId => $matcher) { |
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if (!$matcher($data)) { |
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throw new Exception("matcher #$matcherId failed"); |
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} |
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} |
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foreach ($this->post as $filter) { |
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$data = $filter($data); |
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} |
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return new Valid($data); |
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} catch (\Exception $e) { |
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if (isset($this->errorMsg)) { |
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$e = new Exception(sprintf($this->errorMsg, $e->getMessage()), 0, $e); |
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} |
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return new Invalid($e); |
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} |
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} |
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public function validate($data) |
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{ |
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return $this->applyTo($data)->getValidData(); |
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} |
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} |
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hanneskod /
clean
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