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187
developer/vendor/symfony/console/Question/ChoiceQuestion.php
vendored
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187
developer/vendor/symfony/console/Question/ChoiceQuestion.php
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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\Question;
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use Symfony\Component\Console\Exception\InvalidArgumentException;
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/**
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* Represents a choice question.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class ChoiceQuestion extends Question
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{
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private $choices;
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private $multiselect = false;
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private $prompt = ' > ';
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private $errorMessage = 'Value "%s" is invalid';
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/**
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* Constructor.
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*
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* @param string $question The question to ask to the user
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* @param array $choices The list of available choices
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* @param mixed $default The default answer to return
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*/
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public function __construct($question, array $choices, $default = null)
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{
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parent::__construct($question, $default);
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$this->choices = $choices;
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$this->setValidator($this->getDefaultValidator());
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$this->setAutocompleterValues($choices);
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}
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/**
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* Returns available choices.
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*
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* @return array
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*/
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public function getChoices()
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{
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return $this->choices;
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}
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/**
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* Sets multiselect option.
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*
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* When multiselect is set to true, multiple choices can be answered.
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*
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* @param bool $multiselect
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*
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* @return ChoiceQuestion The current instance
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*/
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public function setMultiselect($multiselect)
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{
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$this->multiselect = $multiselect;
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$this->setValidator($this->getDefaultValidator());
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return $this;
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}
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/**
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* Returns whether the choices are multiselect.
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*
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* @return bool
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*/
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public function isMultiselect()
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{
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return $this->multiselect;
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}
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/**
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* Gets the prompt for choices.
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*
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* @return string
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*/
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public function getPrompt()
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{
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return $this->prompt;
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}
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/**
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* Sets the prompt for choices.
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*
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* @param string $prompt
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*
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* @return ChoiceQuestion The current instance
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*/
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public function setPrompt($prompt)
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{
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$this->prompt = $prompt;
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return $this;
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}
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/**
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* Sets the error message for invalid values.
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*
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* The error message has a string placeholder (%s) for the invalid value.
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*
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* @param string $errorMessage
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*
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* @return ChoiceQuestion The current instance
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*/
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public function setErrorMessage($errorMessage)
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{
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$this->errorMessage = $errorMessage;
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$this->setValidator($this->getDefaultValidator());
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return $this;
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}
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/**
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* Returns the default answer validator.
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*
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* @return callable
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*/
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private function getDefaultValidator()
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{
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$choices = $this->choices;
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$errorMessage = $this->errorMessage;
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$multiselect = $this->multiselect;
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$isAssoc = $this->isAssoc($choices);
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return function ($selected) use ($choices, $errorMessage, $multiselect, $isAssoc) {
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// Collapse all spaces.
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$selectedChoices = str_replace(' ', '', $selected);
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if ($multiselect) {
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// Check for a separated comma values
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if (!preg_match('/^[a-zA-Z0-9_-]+(?:,[a-zA-Z0-9_-]+)*$/', $selectedChoices, $matches)) {
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throw new InvalidArgumentException(sprintf($errorMessage, $selected));
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}
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$selectedChoices = explode(',', $selectedChoices);
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} else {
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$selectedChoices = array($selected);
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}
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$multiselectChoices = array();
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foreach ($selectedChoices as $value) {
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$results = array();
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foreach ($choices as $key => $choice) {
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if ($choice === $value) {
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$results[] = $key;
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}
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}
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if (count($results) > 1) {
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throw new InvalidArgumentException(sprintf('The provided answer is ambiguous. Value should be one of %s.', implode(' or ', $results)));
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}
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$result = array_search($value, $choices);
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if (!$isAssoc) {
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if (false !== $result) {
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$result = $choices[$result];
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} elseif (isset($choices[$value])) {
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$result = $choices[$value];
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}
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} elseif (false === $result && isset($choices[$value])) {
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$result = $value;
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}
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if (false === $result) {
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throw new InvalidArgumentException(sprintf($errorMessage, $value));
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}
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$multiselectChoices[] = (string) $result;
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}
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if ($multiselect) {
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return $multiselectChoices;
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}
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return current($multiselectChoices);
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};
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}
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}
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