function ChoiceQuestion::getDefaultValidator

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

File

vendor/symfony/console/Question/ChoiceQuestion.php, line 113

Class

ChoiceQuestion

Represents a choice question.

Namespace

Symfony\Component\Console\Question

Code

private function getDefaultValidator() : callable {
    $choices = $this->choices;
    $errorMessage = $this->errorMessage;
    $multiselect = $this->multiselect;
    $isAssoc = $this->isAssoc($choices);
    return function ($selected) use ($choices, $errorMessage, $multiselect, $isAssoc) {
        if ($multiselect) {
            // Check for a separated comma values
            if (!preg_match('/^[^,]+(?:,[^,]+)*$/', (string) $selected, $matches)) {
                throw new InvalidArgumentException(\sprintf($errorMessage, $selected));
            }
            $selectedChoices = explode(',', (string) $selected);
        }
        else {
            $selectedChoices = [
                $selected,
            ];
        }
        if ($this->isTrimmable()) {
            foreach ($selectedChoices as $k => $v) {
                $selectedChoices[$k] = trim((string) $v);
            }
        }
        $multiselectChoices = [];
        foreach ($selectedChoices as $value) {
            $results = [];
            foreach ($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));
            }
            // For associative choices, consistently return the key as string:
            $multiselectChoices[] = $isAssoc ? (string) $result : $result;
        }
        if ($multiselect) {
            return $multiselectChoices;
        }
        return current($multiselectChoices);
    };
}