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<?php |
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/** |
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* Linna Filter |
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* |
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* @author Sebastian Rapetti <[email protected]> |
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* @copyright (c) 2018, Sebastian Rapetti |
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* @license http://opensource.org/licenses/MIT MIT License |
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*/ |
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declare(strict_types=1); |
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namespace Linna\Filter\Rules; |
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use UnexpectedValueException; |
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/** |
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* Compare the length of provided string using >, <, >=, <=, = operators. |
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*/ |
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class StringLenCompare extends AbstractString implements RuleSanitizeInterface, RuleValidateInterface |
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{ |
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/** |
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* @var array Rule properties |
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*/ |
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public static $config = [ |
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'full_class' => __CLASS__, |
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'alias' => ['stringlencompare', 'strlencmp', 'strlen', 'slc'], |
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'args_count' => 2, |
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'args_type' => ['string', 'number'] |
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]; |
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/** |
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* @var string Error message |
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*/ |
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private $message = ''; |
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/** |
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* Validate. |
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* |
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* @return bool |
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*/ |
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public function validate(): bool |
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{ |
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$args = \func_get_args(); |
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return $this->concreteValidate($args[0], $args[1], $args[2]); |
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} |
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/** |
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* Concrete validate. |
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* |
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* @param string $received |
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* @param string $operator |
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* @param int $compare |
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* |
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* @return bool |
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*/ |
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private function concreteValidate(string $received, string $operator, int $compare): bool |
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{ |
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if ($this->switchOperator($operator, $received, $compare)) { |
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return false; |
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} |
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$this->message = "Received string length is not {$operator} of {$compare}"; |
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return true; |
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} |
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/** |
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* Perform correct operation from passed operator. |
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* |
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* @param string $operator |
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* @param string $strReceived |
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* @param int $strCompare |
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* |
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* @return bool |
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* |
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* @throws UnexpectedValueException if unknown operator is provided. |
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*/ |
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private function switchOperator(string $operator, string &$strReceived, int &$strCompare): bool |
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{ |
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switch ($operator) { |
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case '>': //greater than |
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return \strlen($strReceived) > $strCompare; |
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case '<': //less than |
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return \strlen($strReceived) < $strCompare; |
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case '>=': //greater than or equal |
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return \strlen($strReceived) >= $strCompare; |
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case '<=': //less than or equal |
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return \strlen($strReceived) <= $strCompare; |
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case '=': //equal |
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return \strlen($strReceived) === $strCompare; |
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4 |
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case '!=': //equal |
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return \strlen($strReceived) !== $strCompare; |
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default: |
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throw new UnexpectedValueException("Unknown comparson operator ({$operator}). Permitted >, <, >=, <=, =, !="); |
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} |
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} |
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/** |
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* Return error message. |
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* |
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* @return string Error message |
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*/ |
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public function getMessage(): string |
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{ |
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return $this->message; |
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} |
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} |
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linna /
filter
