111 lines
3.1 KiB
PHP
111 lines
3.1 KiB
PHP
<?php
|
|
|
|
namespace Symfony\Component\Console\Helper;
|
|
|
|
use Symfony\Component\Console\Output\OutputInterface;
|
|
|
|
/*
|
|
* This file is part of the Symfony framework.
|
|
*
|
|
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
|
|
*
|
|
* This source file is subject to the MIT license that is bundled
|
|
* with this source code in the file LICENSE.
|
|
*/
|
|
|
|
/**
|
|
* The Dialog class provides helpers to interact with the user.
|
|
*
|
|
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
|
|
*/
|
|
class DialogHelper extends Helper
|
|
{
|
|
/**
|
|
* Asks a question to the user.
|
|
*
|
|
* @param OutputInterface $output
|
|
* @param string|array $question The question to ask
|
|
* @param string $default The default answer if none is given by the user
|
|
*
|
|
* @return string The user answer
|
|
*/
|
|
public function ask(OutputInterface $output, $question, $default = null)
|
|
{
|
|
// @codeCoverageIgnoreStart
|
|
$output->writeln($question);
|
|
|
|
$ret = trim(fgets(STDIN));
|
|
|
|
return $ret ? $ret : $default;
|
|
// @codeCoverageIgnoreEnd
|
|
}
|
|
|
|
/**
|
|
* Asks a confirmation to the user.
|
|
*
|
|
* The question will be asked until the user answer by nothing, yes, or no.
|
|
*
|
|
* @param OutputInterface $output
|
|
* @param string|array $question The question to ask
|
|
* @param Boolean $default The default answer if the user enters nothing
|
|
*
|
|
* @return Boolean true if the user has confirmed, false otherwise
|
|
*/
|
|
public function askConfirmation(OutputInterface $output, $question, $default = true)
|
|
{
|
|
// @codeCoverageIgnoreStart
|
|
$answer = 'z';
|
|
while ($answer && !in_array(strtolower($answer[0]), array('y', 'n'))) {
|
|
$answer = $this->ask($output, $question);
|
|
}
|
|
|
|
if (false === $default) {
|
|
return $answer && 'y' == strtolower($answer[0]);
|
|
} else {
|
|
return !$answer || 'y' == strtolower($answer[0]);
|
|
}
|
|
// @codeCoverageIgnoreEnd
|
|
}
|
|
|
|
/**
|
|
* Asks for a value and validates the response.
|
|
*
|
|
* @param OutputInterface $output
|
|
* @param string|array $question
|
|
* @param Closure $validator
|
|
* @param integer $attempts Max number of times to ask before giving up (false by default, which means infinite)
|
|
*
|
|
* @return mixed
|
|
*
|
|
* @throws \Exception When any of the validator returns an error
|
|
*/
|
|
public function askAndValidate(OutputInterface $output, $question, \Closure $validator, $attempts = false)
|
|
{
|
|
// @codeCoverageIgnoreStart
|
|
$error = null;
|
|
while (false === $attempts || $attempts--) {
|
|
if (null !== $error) {
|
|
$output->writeln($this->getHelperSet()->get('formatter')->formatBlock($error->getMessage(), 'error'));
|
|
}
|
|
|
|
$value = $this->ask($output, $question, null);
|
|
|
|
try {
|
|
return $validator($value);
|
|
} catch (\Exception $error) {
|
|
}
|
|
}
|
|
|
|
throw $error;
|
|
// @codeCoverageIgnoreEnd
|
|
}
|
|
|
|
/**
|
|
* Returns the helper's canonical name
|
|
*/
|
|
public function getName()
|
|
{
|
|
return 'dialog';
|
|
}
|
|
}
|