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Commit8ddaa20

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[Console] Fallback to default answers when unable to read input
1 parentd0b7445 commit8ddaa20

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4 files changed

+79
-37
lines changed

4 files changed

+79
-37
lines changed
Lines changed: 21 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,21 @@
1+
<?php
2+
3+
/*
4+
* This file is part of the Symfony package.
5+
*
6+
* (c) Fabien Potencier <fabien@symfony.com>
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+
namespaceSymfony\Component\Console\Exception;
13+
14+
/**
15+
* Represents failure to read input from stdin.
16+
*
17+
* @author Gabriel Ostrolucký <gabriel.ostrolucky@gmail.com>
18+
*/
19+
class MissingInputExceptionextends RuntimeExceptionimplements ExceptionInterface
20+
{
21+
}

‎src/Symfony/Component/Console/Helper/QuestionHelper.php‎

Lines changed: 52 additions & 33 deletions
Original file line numberDiff line numberDiff line change
@@ -11,6 +11,7 @@
1111

1212
namespaceSymfony\Component\Console\Helper;
1313

14+
useSymfony\Component\Console\Exception\MissingInputException;
1415
useSymfony\Component\Console\Exception\RuntimeException;
1516
useSymfony\Component\Console\Formatter\OutputFormatter;
1617
useSymfony\Component\Console\Formatter\OutputFormatterStyle;
@@ -48,44 +49,32 @@ public function ask(InputInterface $input, OutputInterface $output, Question $qu
4849
}
4950

5051
if (!$input->isInteractive()) {
51-
$default =$question->getDefault();
52-
53-
if (null ===$default) {
54-
return$default;
55-
}
56-
57-
if ($validator =$question->getValidator()) {
58-
return\call_user_func($question->getValidator(),$default);
59-
}elseif ($questioninstanceof ChoiceQuestion) {
60-
$choices =$question->getChoices();
61-
62-
if (!$question->isMultiselect()) {
63-
returnisset($choices[$default]) ?$choices[$default] :$default;
64-
}
65-
66-
$default =explode(',',$default);
67-
foreach ($defaultas$k =>$v) {
68-
$v =$question->isTrimmable() ?trim($v) :$v;
69-
$default[$k] =isset($choices[$v]) ?$choices[$v] :$v;
70-
}
71-
}
72-
73-
return$default;
52+
return$this->getDefaultAnswer($question);
7453
}
7554

7655
if ($inputinstanceof StreamableInputInterface &&$stream =$input->getStream()) {
7756
$this->inputStream =$stream;
7857
}
7958

80-
if (!$question->getValidator()) {
81-
return$this->doAsk($output,$question);
82-
}
59+
try {
60+
if (!$question->getValidator()) {
61+
return$this->doAsk($output,$question);
62+
}
8363

84-
$interviewer =function ()use ($output,$question) {
85-
return$this->doAsk($output,$question);
86-
};
64+
$interviewer =function ()use ($output,$question) {
65+
return$this->doAsk($output,$question);
66+
};
8767

88-
return$this->validateAttempts($interviewer,$output,$question);
68+
return$this->validateAttempts($interviewer,$output,$question);
69+
}catch (MissingInputException$exception) {
70+
$input->setInteractive(false);
71+
72+
if (null ===$fallbackOutput =$this->getDefaultAnswer($question)) {
73+
throw$exception;
74+
}
75+
76+
return$fallbackOutput;
77+
}
8978
}
9079

9180
/**
@@ -134,7 +123,7 @@ private function doAsk(OutputInterface $output, Question $question)
134123
if (false ===$ret) {
135124
$ret =fgets($inputStream,4096);
136125
if (false ===$ret) {
137-
thrownewRuntimeException('Aborted.');
126+
thrownewMissingInputException('Aborted.');
138127
}
139128
if ($question->isTrimmable()) {
140129
$ret =trim($ret);
@@ -158,6 +147,36 @@ private function doAsk(OutputInterface $output, Question $question)
158147
return$ret;
159148
}
160149

150+
/**
151+
* @return mixed
152+
*/
153+
privatefunctiongetDefaultAnswer(Question$question)
154+
{
155+
$default =$question->getDefault();
156+
157+
if (null ===$default) {
158+
return$default;
159+
}
160+
161+
if ($validator =$question->getValidator()) {
162+
return\call_user_func($question->getValidator(),$default);
163+
}elseif ($questioninstanceof ChoiceQuestion) {
164+
$choices =$question->getChoices();
165+
166+
if (!$question->isMultiselect()) {
167+
returnisset($choices[$default]) ?$choices[$default] :$default;
168+
}
169+
170+
$default =explode(',',$default);
171+
foreach ($defaultas$k =>$v) {
172+
$v =$question->isTrimmable() ?trim($v) :$v;
173+
$default[$k] =isset($choices[$v]) ?$choices[$v] :$v;
174+
}
175+
}
176+
177+
return$default;
178+
}
179+
161180
/**
162181
* Outputs the question prompt.
163182
*/
@@ -240,7 +259,7 @@ private function autocomplete(OutputInterface $output, Question $question, $inpu
240259
// as opposed to fgets(), fread() returns an empty string when the stream content is empty, not false.
241260
if (false ===$c || ('' ===$ret &&'' ===$c &&null ===$question->getDefault())) {
242261
shell_exec(sprintf('stty %s',$sttyMode));
243-
thrownewRuntimeException('Aborted.');
262+
thrownewMissingInputException('Aborted.');
244263
}elseif ("\177" ===$c) {// Backspace Character
245264
if (0 ===$numMatches &&0 !==$i) {
246265
--$i;
@@ -406,7 +425,7 @@ private function getHiddenResponse(OutputInterface $output, $inputStream, bool $
406425
shell_exec(sprintf('stty %s',$sttyMode));
407426

408427
if (false ===$value) {
409-
thrownewRuntimeException('Aborted.');
428+
thrownewMissingInputException('Aborted.');
410429
}
411430
if ($trimmable) {
412431
$value =trim($value);

‎src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -696,23 +696,23 @@ public function testChoiceOutputFormattingQuestionForUtf8Keys()
696696

697697
publicfunctiontestAskThrowsExceptionOnMissingInput()
698698
{
699-
$this->expectException('Symfony\Component\Console\Exception\RuntimeException');
699+
$this->expectException('Symfony\Component\Console\Exception\MissingInputException');
700700
$this->expectExceptionMessage('Aborted.');
701701
$dialog =newQuestionHelper();
702702
$dialog->ask($this->createStreamableInputInterfaceMock($this->getInputStream('')),$this->createOutputInterface(),newQuestion('What\'s your name?'));
703703
}
704704

705705
publicfunctiontestAskThrowsExceptionOnMissingInputForChoiceQuestion()
706706
{
707-
$this->expectException('Symfony\Component\Console\Exception\RuntimeException');
707+
$this->expectException('Symfony\Component\Console\Exception\MissingInputException');
708708
$this->expectExceptionMessage('Aborted.');
709709
$dialog =newQuestionHelper();
710710
$dialog->ask($this->createStreamableInputInterfaceMock($this->getInputStream('')),$this->createOutputInterface(),newChoiceQuestion('Choice', ['a','b']));
711711
}
712712

713713
publicfunctiontestAskThrowsExceptionOnMissingInputWithValidator()
714714
{
715-
$this->expectException('Symfony\Component\Console\Exception\RuntimeException');
715+
$this->expectException('Symfony\Component\Console\Exception\MissingInputException');
716716
$this->expectExceptionMessage('Aborted.');
717717
$dialog =newQuestionHelper();
718718

‎src/Symfony/Component/Console/Tests/phpt/uses_stdin_as_interactive_input.phpt‎

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -18,11 +18,13 @@ require $vendor.'/vendor/autoload.php';
1818
(newApplication())
1919
->register('app')
2020
->setCode(function(InputInterface$input,OutputInterface$output) {
21-
$output->writeln((newQuestionHelper())->ask($input,$output,newQuestion('Foo?')));
21+
$output->writeln((newQuestionHelper())->ask($input,$output,newQuestion('Foo?','foo')));
22+
$output->writeln((newQuestionHelper())->ask($input,$output,newQuestion('Bar?','bar')));
2223
})
2324
->getApplication()
2425
->setDefaultCommand('app',true)
2526
->run()
2627
;
2728
--EXPECT--
2829
Foo?Hello World
30+
Bar?bar

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