private function ChoiceQuestion::getDefaultValidator in Zircon Profile 8

Same name and namespace in other branches

1. 8.0 vendor/symfony/console/Question/ChoiceQuestion.php \Symfony\Component\Console\Question\ChoiceQuestion::getDefaultValidator()

Returns the default answer validator.

Return value

callable

3 calls to ChoiceQuestion::getDefaultValidator()

ChoiceQuestion::setErrorMessage in vendor/symfony/console/Question/ChoiceQuestion.php

Sets the error message for invalid values.

ChoiceQuestion::setMultiselect in vendor/symfony/console/Question/ChoiceQuestion.php

Sets multiselect option.

ChoiceQuestion::__construct in vendor/symfony/console/Question/ChoiceQuestion.php

Constructor.

File

vendor/symfony/console/Question/ChoiceQuestion.php, line 115

Class

ChoiceQuestion

Represents a choice question.

Namespace

Symfony\Component\Console\Question

Code

private function getDefaultValidator() {
  $choices = $this->choices;
  $errorMessage = $this->errorMessage;
  $multiselect = $this->multiselect;
  $isAssoc = $this
    ->isAssoc($choices);
  return function ($selected) use ($choices, $errorMessage, $multiselect, $isAssoc) {

    // Collapse all spaces.
    $selectedChoices = str_replace(' ', '', $selected);
    if ($multiselect) {

      // Check for a separated comma values
      if (!preg_match('/^[a-zA-Z0-9_-]+(?:,[a-zA-Z0-9_-]+)*$/', $selectedChoices, $matches)) {
        throw new \InvalidArgumentException(sprintf($errorMessage, $selected));
      }
      $selectedChoices = explode(',', $selectedChoices);
    }
    else {
      $selectedChoices = array(
        $selected,
      );
    }
    $multiselectChoices = array();
    foreach ($selectedChoices as $value) {
      $results = array();
      foreach ($choices as $key => $choice) {
        if ($choice === $value) {
          $results[] = $key;
        }
      }
      if (count($results) > 1) {
        throw new \InvalidArgumentException(sprintf('The provided answer is ambiguous. Value should be one of %s.', implode(' or ', $results)));
      }
      $result = array_search($value, $choices);
      if (!$isAssoc) {
        if (false !== $result) {
          $result = $choices[$result];
        }
        elseif (isset($choices[$value])) {
          $result = $choices[$value];
        }
      }
      elseif (false === $result && isset($choices[$value])) {
        $result = $value;
      }
      if (false === $result) {
        throw new \InvalidArgumentException(sprintf($errorMessage, $value));
      }
      $multiselectChoices[] = (string) $result;
    }
    if ($multiselect) {
      return $multiselectChoices;
    }
    return current($multiselectChoices);
  };
}