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- <?php
- /*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
- namespace Symfony\Component\Console\Question;
- /**
- * Represents a yes/no question.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
- class ConfirmationQuestion extends Question
- {
- private $trueAnswerRegex;
- /**
- * @param string $question The question to ask to the user
- * @param bool $default The default answer to return, true or false
- * @param string $trueAnswerRegex A regex to match the "yes" answer
- */
- public function __construct(string $question, bool $default = true, string $trueAnswerRegex = '/^y/i')
- {
- parent::__construct($question, $default);
- $this->trueAnswerRegex = $trueAnswerRegex;
- $this->setNormalizer($this->getDefaultNormalizer());
- }
- /**
- * Returns the default answer normalizer.
- *
- * @return callable
- */
- private function getDefaultNormalizer()
- {
- $default = $this->getDefault();
- $regex = $this->trueAnswerRegex;
- return function ($answer) use ($default, $regex) {
- if (\is_bool($answer)) {
- return $answer;
- }
- $answerIsTrue = (bool) preg_match($regex, $answer);
- if (false === $default) {
- return $answer && $answerIsTrue;
- }
- return '' === $answer || $answerIsTrue;
- };
- }
- }
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