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1 <?php 2 3 /* 4 * This file is part of the Symfony package. 5 * 6 * (c) Fabien Potencier <[email protected]> 7 * 8 * For the full copyright and license information, please view the LICENSE 9 * file that was distributed with this source code. 10 */ 11 12 namespace Symfony\Component\Console\Question; 13 14 /** 15 * Represents a yes/no question. 16 * 17 * @author Fabien Potencier <[email protected]> 18 */ 19 class ConfirmationQuestion extends Question 20 { 21 private $trueAnswerRegex; 22 23 /** 24 * @param string $question The question to ask to the user 25 * @param bool $default The default answer to return, true or false 26 * @param string $trueAnswerRegex A regex to match the "yes" answer 27 */ 28 public function __construct(string $question, bool $default = true, string $trueAnswerRegex = '/^y/i') 29 { 30 parent::__construct($question, $default); 31 32 $this->trueAnswerRegex = $trueAnswerRegex; 33 $this->setNormalizer($this->getDefaultNormalizer()); 34 } 35 36 /** 37 * Returns the default answer normalizer. 38 */ 39 private function getDefaultNormalizer(): callable 40 { 41 $default = $this->getDefault(); 42 $regex = $this->trueAnswerRegex; 43 44 return function ($answer) use ($default, $regex) { 45 if (\is_bool($answer)) { 46 return $answer; 47 } 48 49 $answerIsTrue = (bool) preg_match($regex, $answer); 50 if (false === $default) { 51 return $answer && $answerIsTrue; 52 } 53 54 return '' === $answer || $answerIsTrue; 55 }; 56 } 57 }
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