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<?php |
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|
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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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|
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namespace Symfony\Component\Console\Helper; |
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|
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use Symfony\Component\Console\Cursor; |
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use Symfony\Component\Console\Exception\MissingInputException; |
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use Symfony\Component\Console\Exception\RuntimeException; |
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use Symfony\Component\Console\Formatter\OutputFormatter; |
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use Symfony\Component\Console\Formatter\OutputFormatterStyle; |
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use Symfony\Component\Console\Input\InputInterface; |
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use Symfony\Component\Console\Input\StreamableInputInterface; |
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use Symfony\Component\Console\Output\ConsoleOutputInterface; |
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use Symfony\Component\Console\Output\ConsoleSectionOutput; |
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use Symfony\Component\Console\Output\OutputInterface; |
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use Symfony\Component\Console\Question\ChoiceQuestion; |
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use Symfony\Component\Console\Question\Question; |
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use Symfony\Component\Console\Terminal; |
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|
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use function Symfony\Component\String\s; |
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|
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/** |
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* The QuestionHelper class provides helpers to interact with the user. |
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* |
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* @author Fabien Potencier <fabien@symfony.com> |
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*/ |
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class QuestionHelper extends Helper |
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{ |
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/** |
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* @var resource|null |
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*/ |
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private $inputStream; |
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|
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private static $stty = true; |
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private static $stdinIsInteractive; |
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|
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/** |
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* Asks a question to the user. |
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* |
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* @return mixed The user answer |
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* |
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* @throws RuntimeException If there is no data to read in the input stream |
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*/ |
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public function ask(InputInterface $input, OutputInterface $output, Question $question) |
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{ |
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if ($output instanceof ConsoleOutputInterface) { |
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$output = $output->getErrorOutput(); |
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} |
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|
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if (!$input->isInteractive()) { |
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return $this->getDefaultAnswer($question); |
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} |
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|
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if ($input instanceof StreamableInputInterface && $stream = $input->getStream()) { |
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$this->inputStream = $stream; |
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} |
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|
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try { |
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if (!$question->getValidator()) { |
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return $this->doAsk($output, $question); |
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} |
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|
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$interviewer = function () use ($output, $question) { |
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return $this->doAsk($output, $question); |
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}; |
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|
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return $this->validateAttempts($interviewer, $output, $question); |
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} catch (MissingInputException $exception) { |
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$input->setInteractive(false); |
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|
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if (null === $fallbackOutput = $this->getDefaultAnswer($question)) { |
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throw $exception; |
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} |
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|
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return $fallbackOutput; |
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} |
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} |
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|
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/** |
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* {@inheritdoc} |
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*/ |
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public function getName() |
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{ |
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return 'question'; |
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} |
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|
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/** |
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* Prevents usage of stty. |
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*/ |
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public static function disableStty() |
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{ |
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self::$stty = false; |
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} |
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|
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/** |
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* Asks the question to the user. |
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* |
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* @return mixed |
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* |
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* @throws RuntimeException In case the fallback is deactivated and the response cannot be hidden |
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*/ |
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private function doAsk(OutputInterface $output, Question $question) |
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{ |
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$this->writePrompt($output, $question); |
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|
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$inputStream = $this->inputStream ?: \STDIN; |
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$autocomplete = $question->getAutocompleterCallback(); |
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|
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if (null === $autocomplete || !self::$stty || !Terminal::hasSttyAvailable()) { |
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$ret = false; |
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if ($question->isHidden()) { |
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try { |
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$hiddenResponse = $this->getHiddenResponse($output, $inputStream, $question->isTrimmable()); |
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$ret = $question->isTrimmable() ? trim($hiddenResponse) : $hiddenResponse; |
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} catch (RuntimeException $e) { |
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if (!$question->isHiddenFallback()) { |
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throw $e; |
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} |
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} |
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} |
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|
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if (false === $ret) { |
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$isBlocked = stream_get_meta_data($inputStream)['blocked'] ?? true; |
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|
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if (!$isBlocked) { |
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stream_set_blocking($inputStream, true); |
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} |
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|
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$ret = $this->readInput($inputStream, $question); |
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|
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if (!$isBlocked) { |
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stream_set_blocking($inputStream, false); |
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} |
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|
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if (false === $ret) { |
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throw new MissingInputException('Aborted.'); |
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} |
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if ($question->isTrimmable()) { |
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$ret = trim($ret); |
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} |
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} |
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} else { |
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$autocomplete = $this->autocomplete($output, $question, $inputStream, $autocomplete); |
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$ret = $question->isTrimmable() ? trim($autocomplete) : $autocomplete; |
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} |
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|
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if ($output instanceof ConsoleSectionOutput) { |
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$output->addContent($ret); |
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} |
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|
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$ret = \strlen($ret) > 0 ? $ret : $question->getDefault(); |
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|
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if ($normalizer = $question->getNormalizer()) { |
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return $normalizer($ret); |
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} |
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|
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return $ret; |
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} |
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|
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/** |
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* @return mixed |
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*/ |
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private function getDefaultAnswer(Question $question) |
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{ |
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$default = $question->getDefault(); |
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|
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if (null === $default) { |
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return $default; |
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} |
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|
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if ($validator = $question->getValidator()) { |
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return \call_user_func($question->getValidator(), $default); |
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} elseif ($question instanceof ChoiceQuestion) { |
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$choices = $question->getChoices(); |
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|
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if (!$question->isMultiselect()) { |
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return $choices[$default] ?? $default; |
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} |
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|
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$default = explode(',', $default); |
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foreach ($default as $k => $v) { |
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$v = $question->isTrimmable() ? trim($v) : $v; |
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$default[$k] = $choices[$v] ?? $v; |
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} |
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} |
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|
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return $default; |
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} |
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|
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/** |
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* Outputs the question prompt. |
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*/ |
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protected function writePrompt(OutputInterface $output, Question $question) |
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{ |
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$message = $question->getQuestion(); |
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|
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if ($question instanceof ChoiceQuestion) { |
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$output->writeln(array_merge([ |
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$question->getQuestion(), |
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], $this->formatChoiceQuestionChoices($question, 'info'))); |
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|
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$message = $question->getPrompt(); |
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} |
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|
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$output->write($message); |
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} |
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|
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/** |
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* @return string[] |
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*/ |
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protected function formatChoiceQuestionChoices(ChoiceQuestion $question, string $tag) |
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{ |
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$messages = []; |
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|
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$maxWidth = max(array_map([__CLASS__, 'width'], array_keys($choices = $question->getChoices()))); |
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|
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foreach ($choices as $key => $value) { |
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$padding = str_repeat(' ', $maxWidth - self::width($key)); |
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|
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$messages[] = sprintf(" [<$tag>%s$padding</$tag>] %s", $key, $value); |
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} |
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|
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return $messages; |
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} |
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|
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/** |
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* Outputs an error message. |
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*/ |
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protected function writeError(OutputInterface $output, \Exception $error) |
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{ |
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if (null !== $this->getHelperSet() && $this->getHelperSet()->has('formatter')) { |
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$message = $this->getHelperSet()->get('formatter')->formatBlock($error->getMessage(), 'error'); |
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} else { |
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$message = '<error>'.$error->getMessage().'</error>'; |
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} |
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|
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$output->writeln($message); |
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} |
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|
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/** |
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* Autocompletes a question. |
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* |
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* @param resource $inputStream |
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*/ |
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private function autocomplete(OutputInterface $output, Question $question, $inputStream, callable $autocomplete): string |
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{ |
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$cursor = new Cursor($output, $inputStream); |
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|
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$fullChoice = ''; |
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$ret = ''; |
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|
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$i = 0; |
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$ofs = -1; |
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$matches = $autocomplete($ret); |
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$numMatches = \count($matches); |
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|
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$sttyMode = shell_exec('stty -g'); |
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$isStdin = 'php://stdin' === (stream_get_meta_data($inputStream)['uri'] ?? null); |
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$r = [$inputStream]; |
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$w = []; |
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|
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// Disable icanon (so we can fread each keypress) and echo (we'll do echoing here instead) |
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shell_exec('stty -icanon -echo'); |
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|
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// Add highlighted text style |
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$output->getFormatter()->setStyle('hl', new OutputFormatterStyle('black', 'white')); |
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|
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// Read a keypress |
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while (!feof($inputStream)) { |
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while ($isStdin && 0 === @stream_select($r, $w, $w, 0, 100)) { |
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// Give signal handlers a chance to run |
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$r = [$inputStream]; |
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} |
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$c = fread($inputStream, 1); |
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|
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// as opposed to fgets(), fread() returns an empty string when the stream content is empty, not false. |
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if (false === $c || ('' === $ret && '' === $c && null === $question->getDefault())) { |
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shell_exec('stty '.$sttyMode); |
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throw new MissingInputException('Aborted.'); |
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} elseif ("\177" === $c) { // Backspace Character |
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if (0 === $numMatches && 0 !== $i) { |
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--$i; |
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$cursor->moveLeft(s($fullChoice)->slice(-1)->width(false)); |
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|
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$fullChoice = self::substr($fullChoice, 0, $i); |
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} |
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|
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if (0 === $i) { |
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$ofs = -1; |
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$matches = $autocomplete($ret); |
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$numMatches = \count($matches); |
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} else { |
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$numMatches = 0; |
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} |
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|
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// Pop the last character off the end of our string |
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$ret = self::substr($ret, 0, $i); |
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} elseif ("\033" === $c) { |
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// Did we read an escape sequence? |
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$c .= fread($inputStream, 2); |
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|
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// A = Up Arrow. B = Down Arrow |
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if (isset($c[2]) && ('A' === $c[2] || 'B' === $c[2])) { |
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if ('A' === $c[2] && -1 === $ofs) { |
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$ofs = 0; |
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} |
| 315 |
|
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if (0 === $numMatches) { |
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continue; |
| 318 |
} |
| 319 |
|
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$ofs += ('A' === $c[2]) ? -1 : 1; |
| 321 |
$ofs = ($numMatches + $ofs) % $numMatches; |
| 322 |
} |
| 323 |
} elseif (\ord($c) < 32) { |
| 324 |
if ("\t" === $c || "\n" === $c) { |
| 325 |
if ($numMatches > 0 && -1 !== $ofs) { |
| 326 |
$ret = (string) $matches[$ofs]; |
| 327 |
// Echo out remaining chars for current match |
| 328 |
$remainingCharacters = substr($ret, \strlen(trim($this->mostRecentlyEnteredValue($fullChoice)))); |
| 329 |
$output->write($remainingCharacters); |
| 330 |
$fullChoice .= $remainingCharacters; |
| 331 |
$i = (false === $encoding = mb_detect_encoding($fullChoice, null, true)) ? \strlen($fullChoice) : mb_strlen($fullChoice, $encoding); |
| 332 |
|
| 333 |
$matches = array_filter( |
| 334 |
$autocomplete($ret), |
| 335 |
function ($match) use ($ret) { |
| 336 |
return '' === $ret || str_starts_with($match, $ret); |
| 337 |
} |
| 338 |
); |
| 339 |
$numMatches = \count($matches); |
| 340 |
$ofs = -1; |
| 341 |
} |
| 342 |
|
| 343 |
if ("\n" === $c) { |
| 344 |
$output->write($c); |
| 345 |
break; |
| 346 |
} |
| 347 |
|
| 348 |
$numMatches = 0; |
| 349 |
} |
| 350 |
|
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continue; |
| 352 |
} else { |
| 353 |
if ("\x80" <= $c) { |
| 354 |
$c .= fread($inputStream, ["\xC0" => 1, "\xD0" => 1, "\xE0" => 2, "\xF0" => 3][$c & "\xF0"]); |
| 355 |
} |
| 356 |
|
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$output->write($c); |
| 358 |
$ret .= $c; |
| 359 |
$fullChoice .= $c; |
| 360 |
++$i; |
| 361 |
|
| 362 |
$tempRet = $ret; |
| 363 |
|
| 364 |
if ($question instanceof ChoiceQuestion && $question->isMultiselect()) { |
| 365 |
$tempRet = $this->mostRecentlyEnteredValue($fullChoice); |
| 366 |
} |
| 367 |
|
| 368 |
$numMatches = 0; |
| 369 |
$ofs = 0; |
| 370 |
|
| 371 |
foreach ($autocomplete($ret) as $value) { |
| 372 |
// If typed characters match the beginning chunk of value (e.g. [AcmeDe]moBundle) |
| 373 |
if (str_starts_with($value, $tempRet)) { |
| 374 |
$matches[$numMatches++] = $value; |
| 375 |
} |
| 376 |
} |
| 377 |
} |
| 378 |
|
| 379 |
$cursor->clearLineAfter(); |
| 380 |
|
| 381 |
if ($numMatches > 0 && -1 !== $ofs) { |
| 382 |
$cursor->savePosition(); |
| 383 |
// Write highlighted text, complete the partially entered response |
| 384 |
$charactersEntered = \strlen(trim($this->mostRecentlyEnteredValue($fullChoice))); |
| 385 |
$output->write('<hl>'.OutputFormatter::escapeTrailingBackslash(substr($matches[$ofs], $charactersEntered)).'</hl>'); |
| 386 |
$cursor->restorePosition(); |
| 387 |
} |
| 388 |
} |
| 389 |
|
| 390 |
// Reset stty so it behaves normally again |
| 391 |
shell_exec('stty '.$sttyMode); |
| 392 |
|
| 393 |
return $fullChoice; |
| 394 |
} |
| 395 |
|
| 396 |
private function mostRecentlyEnteredValue(string $entered): string |
| 397 |
{ |
| 398 |
// Determine the most recent value that the user entered |
| 399 |
if (!str_contains($entered, ',')) { |
| 400 |
return $entered; |
| 401 |
} |
| 402 |
|
| 403 |
$choices = explode(',', $entered); |
| 404 |
if ('' !== $lastChoice = trim($choices[\count($choices) - 1])) { |
| 405 |
return $lastChoice; |
| 406 |
} |
| 407 |
|
| 408 |
return $entered; |
| 409 |
} |
| 410 |
|
| 411 |
/** |
| 412 |
* Gets a hidden response from user. |
| 413 |
* |
| 414 |
* @param resource $inputStream The handler resource |
| 415 |
* @param bool $trimmable Is the answer trimmable |
| 416 |
* |
| 417 |
* @throws RuntimeException In case the fallback is deactivated and the response cannot be hidden |
| 418 |
*/ |
| 419 |
private function getHiddenResponse(OutputInterface $output, $inputStream, bool $trimmable = true): string |
| 420 |
{ |
| 421 |
if ('\\' === \DIRECTORY_SEPARATOR) { |
| 422 |
$exe = __DIR__.'/../Resources/bin/hiddeninput.exe'; |
| 423 |
|
| 424 |
// handle code running from a phar |
| 425 |
if ('phar:' === substr(__FILE__, 0, 5)) { |
| 426 |
$tmpExe = sys_get_temp_dir().'/hiddeninput.exe'; |
| 427 |
copy($exe, $tmpExe); |
| 428 |
$exe = $tmpExe; |
| 429 |
} |
| 430 |
|
| 431 |
$sExec = shell_exec('"'.$exe.'"'); |
| 432 |
$value = $trimmable ? rtrim($sExec) : $sExec; |
| 433 |
$output->writeln(''); |
| 434 |
|
| 435 |
if (isset($tmpExe)) { |
| 436 |
unlink($tmpExe); |
| 437 |
} |
| 438 |
|
| 439 |
return $value; |
| 440 |
} |
| 441 |
|
| 442 |
if (self::$stty && Terminal::hasSttyAvailable()) { |
| 443 |
$sttyMode = shell_exec('stty -g'); |
| 444 |
shell_exec('stty -echo'); |
| 445 |
} elseif ($this->isInteractiveInput($inputStream)) { |
| 446 |
throw new RuntimeException('Unable to hide the response.'); |
| 447 |
} |
| 448 |
|
| 449 |
$value = fgets($inputStream, 4096); |
| 450 |
|
| 451 |
if (self::$stty && Terminal::hasSttyAvailable()) { |
| 452 |
shell_exec('stty '.$sttyMode); |
| 453 |
} |
| 454 |
|
| 455 |
if (false === $value) { |
| 456 |
throw new MissingInputException('Aborted.'); |
| 457 |
} |
| 458 |
if ($trimmable) { |
| 459 |
$value = trim($value); |
| 460 |
} |
| 461 |
$output->writeln(''); |
| 462 |
|
| 463 |
return $value; |
| 464 |
} |
| 465 |
|
| 466 |
/** |
| 467 |
* Validates an attempt. |
| 468 |
* |
| 469 |
* @param callable $interviewer A callable that will ask for a question and return the result |
| 470 |
* |
| 471 |
* @return mixed The validated response |
| 472 |
* |
| 473 |
* @throws \Exception In case the max number of attempts has been reached and no valid response has been given |
| 474 |
*/ |
| 475 |
private function validateAttempts(callable $interviewer, OutputInterface $output, Question $question) |
| 476 |
{ |
| 477 |
$error = null; |
| 478 |
$attempts = $question->getMaxAttempts(); |
| 479 |
|
| 480 |
while (null === $attempts || $attempts--) { |
| 481 |
if (null !== $error) { |
| 482 |
$this->writeError($output, $error); |
| 483 |
} |
| 484 |
|
| 485 |
try { |
| 486 |
return $question->getValidator()($interviewer()); |
| 487 |
} catch (RuntimeException $e) { |
| 488 |
throw $e; |
| 489 |
} catch (\Exception $error) { |
| 490 |
} |
| 491 |
} |
| 492 |
|
| 493 |
throw $error; |
| 494 |
} |
| 495 |
|
| 496 |
private function isInteractiveInput($inputStream): bool |
| 497 |
{ |
| 498 |
if ('php://stdin' !== (stream_get_meta_data($inputStream)['uri'] ?? null)) { |
| 499 |
return false; |
| 500 |
} |
| 501 |
|
| 502 |
if (null !== self::$stdinIsInteractive) { |
| 503 |
return self::$stdinIsInteractive; |
| 504 |
} |
| 505 |
|
| 506 |
return self::$stdinIsInteractive = @stream_isatty(fopen('php://stdin', 'r')); |
| 507 |
} |
| 508 |
|
| 509 |
/** |
| 510 |
* Reads one or more lines of input and returns what is read. |
| 511 |
* |
| 512 |
* @param resource $inputStream The handler resource |
| 513 |
* @param Question $question The question being asked |
| 514 |
* |
| 515 |
* @return string|false The input received, false in case input could not be read |
| 516 |
*/ |
| 517 |
private function readInput($inputStream, Question $question) |
| 518 |
{ |
| 519 |
if (!$question->isMultiline()) { |
| 520 |
$cp = $this->setIOCodepage(); |
| 521 |
$ret = fgets($inputStream, 4096); |
| 522 |
|
| 523 |
return $this->resetIOCodepage($cp, $ret); |
| 524 |
} |
| 525 |
|
| 526 |
$multiLineStreamReader = $this->cloneInputStream($inputStream); |
| 527 |
if (null === $multiLineStreamReader) { |
| 528 |
return false; |
| 529 |
} |
| 530 |
|
| 531 |
$ret = ''; |
| 532 |
$cp = $this->setIOCodepage(); |
| 533 |
while (false !== ($char = fgetc($multiLineStreamReader))) { |
| 534 |
if (\PHP_EOL === "{$ret}{$char}") { |
| 535 |
break; |
| 536 |
} |
| 537 |
$ret .= $char; |
| 538 |
} |
| 539 |
|
| 540 |
return $this->resetIOCodepage($cp, $ret); |
| 541 |
} |
| 542 |
|
| 543 |
/** |
| 544 |
* Sets console I/O to the host code page. |
| 545 |
* |
| 546 |
* @return int Previous code page in IBM/EBCDIC format |
| 547 |
*/ |
| 548 |
private function setIOCodepage(): int |
| 549 |
{ |
| 550 |
if (\function_exists('sapi_windows_cp_set')) { |
| 551 |
$cp = sapi_windows_cp_get(); |
| 552 |
sapi_windows_cp_set(sapi_windows_cp_get('oem')); |
| 553 |
|
| 554 |
return $cp; |
| 555 |
} |
| 556 |
|
| 557 |
return 0; |
| 558 |
} |
| 559 |
|
| 560 |
/** |
| 561 |
* Sets console I/O to the specified code page and converts the user input. |
| 562 |
* |
| 563 |
* @param string|false $input |
| 564 |
* |
| 565 |
* @return string|false |
| 566 |
*/ |
| 567 |
private function resetIOCodepage(int $cp, $input) |
| 568 |
{ |
| 569 |
if (0 !== $cp) { |
| 570 |
sapi_windows_cp_set($cp); |
| 571 |
|
| 572 |
if (false !== $input && '' !== $input) { |
| 573 |
$input = sapi_windows_cp_conv(sapi_windows_cp_get('oem'), $cp, $input); |
| 574 |
} |
| 575 |
} |
| 576 |
|
| 577 |
return $input; |
| 578 |
} |
| 579 |
|
| 580 |
/** |
| 581 |
* Clones an input stream in order to act on one instance of the same |
| 582 |
* stream without affecting the other instance. |
| 583 |
* |
| 584 |
* @param resource $inputStream The handler resource |
| 585 |
* |
| 586 |
* @return resource|null The cloned resource, null in case it could not be cloned |
| 587 |
*/ |
| 588 |
private function cloneInputStream($inputStream) |
| 589 |
{ |
| 590 |
$streamMetaData = stream_get_meta_data($inputStream); |
| 591 |
$seekable = $streamMetaData['seekable'] ?? false; |
| 592 |
$mode = $streamMetaData['mode'] ?? 'rb'; |
| 593 |
$uri = $streamMetaData['uri'] ?? null; |
| 594 |
|
| 595 |
if (null === $uri) { |
| 596 |
return null; |
| 597 |
} |
| 598 |
|
| 599 |
$cloneStream = fopen($uri, $mode); |
| 600 |
|
| 601 |
// For seekable and writable streams, add all the same data to the |
| 602 |
// cloned stream and then seek to the same offset. |
| 603 |
if (true === $seekable && !\in_array($mode, ['r', 'rb', 'rt'])) { |
| 604 |
$offset = ftell($inputStream); |
| 605 |
rewind($inputStream); |
| 606 |
stream_copy_to_stream($inputStream, $cloneStream); |
| 607 |
fseek($inputStream, $offset); |
| 608 |
fseek($cloneStream, $offset); |
| 609 |
} |
| 610 |
|
| 611 |
return $cloneStream; |
| 612 |
} |
| 613 |
} |
| 614 |
|
