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<?php |
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declare(strict_types=1); |
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namespace Stadly\PasswordPolice\Rule; |
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use InvalidArgumentException; |
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use Stadly\PasswordPolice\Password; |
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use Stadly\PasswordPolice\Policy; |
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final class Length implements RuleInterface |
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{ |
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/** |
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* @var int Minimum password length. |
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*/ |
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private $min; |
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/** |
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* @var int|null Maximum password length. |
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*/ |
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private $max; |
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/** |
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* @param int $min Minimum password length. |
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* @param int|null $max Maximum password length. |
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*/ |
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public function __construct(int $min = 8, ?int $max = null) |
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{ |
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if ($min < 0) { |
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throw new InvalidArgumentException('Min cannot be negative.'); |
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} |
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if ($max !== null && $max < $min) { |
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throw new InvalidArgumentException('Max cannot be smaller than min.'); |
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} |
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if ($min === 0 && $max === null) { |
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throw new InvalidArgumentException('Min cannot be zero when max is unconstrained.'); |
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} |
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$this->min = $min; |
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$this->max = $max; |
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} |
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/** |
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* @return int Minimum password length. |
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*/ |
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public function getMin(): int |
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{ |
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return $this->min; |
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} |
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/** |
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* @return int|null Maximum password length. |
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*/ |
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public function getMax(): ?int |
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{ |
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return $this->max; |
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} |
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/** |
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* Check whether a password is in compliance with the rule. |
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* |
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* @param Password|string $password Password to check. |
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* @return bool Whether the password is in compliance with the rule. |
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*/ |
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public function test($password): bool |
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{ |
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$count = $this->getNoncompliantCount((string)$password); |
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return $count === null; |
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} |
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/** |
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* Enforce that a password is in compliance with the rule. |
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* |
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* @param Password|string $password Password that must adhere to the rule. |
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* @throws RuleException If the password does not adhrere to the rule. |
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*/ |
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public function enforce($password): void |
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{ |
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$count = $this->getNoncompliantCount((string)$password); |
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if ($count !== null) { |
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throw new RuleException($this, $this->getMessage()); |
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} |
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} |
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/** |
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* @param string $password Password to count characters in. |
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* @return int Number of characters if not in compliance with the rule. |
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*/ |
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private function getNoncompliantCount(string $password): ?int |
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{ |
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$count = $this->getCount($password); |
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if ($count < $this->min) { |
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return $count; |
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} |
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if (null !== $this->max && $this->max < $count) { |
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return $count; |
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} |
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return null; |
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} |
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/** |
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* @param string $password Password to count characters in. |
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* @return int Number of characters. |
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*/ |
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private function getCount(string $password): int |
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{ |
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return mb_strlen($password); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getMessage(): string |
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{ |
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$translator = Policy::getTranslator(); |
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if ($this->max === null) { |
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return $translator->trans( |
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'There must be at least one character.|'. |
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'There must be at least %count% characters.', |
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['%count%' => $this->min] |
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); |
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} |
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if ($this->max === 0) { |
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return $translator->trans( |
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'There must be no characters.' |
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); |
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} |
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if ($this->min === 0) { |
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return $translator->trans( |
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'There must be at most one character.|'. |
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'There must be at most %count% characters.', |
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['%count%' => $this->max] |
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); |
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} |
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if ($this->min === $this->max) { |
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return $translator->trans( |
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'There must be exactly one character.|'. |
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'There must be exactly %count% characters.', |
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['%count%' => $this->min] |
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); |
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} |
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return $translator->trans( |
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'There must be between %min% and %max% characters.', |
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['%min%' => $this->min, '%max%' => $this->max] |
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); |
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} |
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} |
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Stadly /
PasswordPolice
