[Console] Fallback to default answers when unable to read input
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@ -0,0 +1,21 @@
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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\Exception;
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/**
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* Represents failure to read input from stdin.
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*
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* @author Gabriel Ostrolucký <gabriel.ostrolucky@gmail.com>
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*/
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class MissingInputException extends RuntimeException implements ExceptionInterface
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{
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}
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@ -11,6 +11,7 @@
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namespace Symfony\Component\Console\Helper;
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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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@ -48,44 +49,32 @@ class QuestionHelper extends Helper
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}
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if (!$input->isInteractive()) {
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$default = $question->getDefault();
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if (null === $default) {
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return $default;
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}
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if ($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 = $question->getChoices();
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if (!$question->isMultiselect()) {
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return isset($choices[$default]) ? $choices[$default] : $default;
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}
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$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[$k] = isset($choices[$v]) ? $choices[$v] : $v;
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}
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}
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return $default;
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return $this->getDefaultAnswer($question);
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}
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if ($input instanceof StreamableInputInterface && $stream = $input->getStream()) {
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$this->inputStream = $stream;
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}
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if (!$question->getValidator()) {
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return $this->doAsk($output, $question);
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try {
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if (!$question->getValidator()) {
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return $this->doAsk($output, $question);
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}
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$interviewer = function () use ($output, $question) {
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return $this->doAsk($output, $question);
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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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if (null === $fallbackOutput = $this->getDefaultAnswer($question)) {
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throw $exception;
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}
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return $fallbackOutput;
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}
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$interviewer = function () use ($output, $question) {
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return $this->doAsk($output, $question);
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};
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return $this->validateAttempts($interviewer, $output, $question);
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}
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/**
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@ -134,7 +123,7 @@ class QuestionHelper extends Helper
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if (false === $ret) {
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$ret = fgets($inputStream, 4096);
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if (false === $ret) {
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throw new RuntimeException('Aborted.');
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throw new MissingInputException('Aborted.');
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}
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if ($question->isTrimmable()) {
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$ret = trim($ret);
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@ -158,6 +147,36 @@ class QuestionHelper extends Helper
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return $ret;
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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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if (null === $default) {
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return $default;
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}
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if ($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 = $question->getChoices();
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if (!$question->isMultiselect()) {
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return isset($choices[$default]) ? $choices[$default] : $default;
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}
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$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[$k] = isset($choices[$v]) ? $choices[$v] : $v;
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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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* Outputs the question prompt.
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*/
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@ -240,7 +259,7 @@ class QuestionHelper extends Helper
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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(sprintf('stty %s', $sttyMode));
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throw new RuntimeException('Aborted.');
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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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@ -406,7 +425,7 @@ class QuestionHelper extends Helper
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shell_exec(sprintf('stty %s', $sttyMode));
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if (false === $value) {
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throw new RuntimeException('Aborted.');
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throw new MissingInputException('Aborted.');
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}
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if ($trimmable) {
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$value = trim($value);
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@ -696,7 +696,7 @@ class QuestionHelperTest extends AbstractQuestionHelperTest
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public function testAskThrowsExceptionOnMissingInput()
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{
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$this->expectException('Symfony\Component\Console\Exception\RuntimeException');
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$this->expectException('Symfony\Component\Console\Exception\MissingInputException');
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$this->expectExceptionMessage('Aborted.');
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$dialog = new QuestionHelper();
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$dialog->ask($this->createStreamableInputInterfaceMock($this->getInputStream('')), $this->createOutputInterface(), new Question('What\'s your name?'));
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@ -704,7 +704,7 @@ class QuestionHelperTest extends AbstractQuestionHelperTest
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public function testAskThrowsExceptionOnMissingInputForChoiceQuestion()
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{
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$this->expectException('Symfony\Component\Console\Exception\RuntimeException');
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$this->expectException('Symfony\Component\Console\Exception\MissingInputException');
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$this->expectExceptionMessage('Aborted.');
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$dialog = new QuestionHelper();
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$dialog->ask($this->createStreamableInputInterfaceMock($this->getInputStream('')), $this->createOutputInterface(), new ChoiceQuestion('Choice', ['a', 'b']));
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@ -712,7 +712,7 @@ class QuestionHelperTest extends AbstractQuestionHelperTest
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public function testAskThrowsExceptionOnMissingInputWithValidator()
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{
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$this->expectException('Symfony\Component\Console\Exception\RuntimeException');
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$this->expectException('Symfony\Component\Console\Exception\MissingInputException');
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$this->expectExceptionMessage('Aborted.');
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$dialog = new QuestionHelper();
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@ -18,7 +18,8 @@ require $vendor.'/vendor/autoload.php';
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(new Application())
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->register('app')
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->setCode(function(InputInterface $input, OutputInterface $output) {
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$output->writeln((new QuestionHelper())->ask($input, $output, new Question('Foo?')));
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$output->writeln((new QuestionHelper())->ask($input, $output, new Question('Foo?', 'foo')));
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$output->writeln((new QuestionHelper())->ask($input, $output, new Question('Bar?', 'bar')));
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})
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->getApplication()
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->setDefaultCommand('app', true)
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@ -26,3 +27,4 @@ require $vendor.'/vendor/autoload.php';
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;
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--EXPECT--
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Foo?Hello World
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Bar?bar
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