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<?php |
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/* |
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* This file is part of Respect/Validation. |
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* |
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* (c) Alexandre Gomes Gaigalas <[email protected]> |
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* |
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* For the full copyright and license information, please view the "LICENSE.md" |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Respect\Validation\Rules; |
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use Respect\Validation\Exceptions\ComponentException; |
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use function array_values; |
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use function count; |
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use function is_array; |
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use function is_string; |
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use function sprintf; |
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use function str_split; |
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/** |
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* Validates whether the input is sorted in a certain order or not. |
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* |
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* @author Henrique Moody <[email protected]> |
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* @author Mikhail Vyrtsev <[email protected]> |
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*/ |
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final class Sorted extends AbstractRule |
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{ |
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public const ASCENDING = 'ASC'; |
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public const DESCENDING = 'DESC'; |
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/** |
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* @var string |
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*/ |
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private $direction; |
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public function __construct(string $direction) |
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{ |
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if ($direction !== self::ASCENDING && $direction !== self::DESCENDING) { |
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throw new ComponentException( |
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sprintf('Direction should be either "%s" or "%s"', self::ASCENDING, self::DESCENDING) |
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); |
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} |
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$this->direction = $direction; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function validate($input): bool |
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{ |
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if (!is_array($input) && !is_string($input)) { |
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return false; |
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} |
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$values = $this->getValues($input); |
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$count = count($values); |
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for ($position = 1; $position < $count; ++$position) { |
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if (!$this->isSorted($values[$position], $values[$position - 1])) { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* @param mixed $current |
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* @param mixed $last |
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*/ |
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private function isSorted($current, $last): bool |
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{ |
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if ($this->direction === self::ASCENDING) { |
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return $current > $last; |
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} |
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return $current < $last; |
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} |
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/** |
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* @param string|mixed[] $input |
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* |
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* @return mixed[] |
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*/ |
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private function getValues($input): array |
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{ |
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if (is_array($input)) { |
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return array_values($input); |
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} |
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return str_split($input); |
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} |
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} |
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Respect /
Validation
