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