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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpFoundation;
use Symfony\Component\HttpFoundation\Exception\BadRequestException;
use Symfony\Component\HttpFoundation\Exception\UnexpectedValueException;
/**
* InputBag is a container for user input values such as $_GET, $_POST, $_REQUEST, and $_COOKIE.
*
* @template TInput of string|int|float|bool|null
*
* @author Saif Eddin Gmati <azjezz@protonmail.com>
*/
final class InputBag extends ParameterBag
{
/**
* Returns a scalar input value by name.
*
* @template TDefault of string|int|float|bool|null
*
* @param TDefault $default The default value if the input key does not exist
*
* @return TDefault|TInput
*
* @throws BadRequestException if the input contains a non-scalar value
*/
public function get(string $key, mixed $default = null): string|int|float|bool|null
{
if (null !== $default && !\is_scalar($default) && !$default instanceof \Stringable) {
throw new \InvalidArgumentException(\sprintf('Expected a scalar value as a 2nd argument to "%s()", "%s" given.', __METHOD__, get_debug_type($default)));
}
$value = parent::get($key, $this);
if (null !== $value && $this !== $value && !\is_scalar($value) && !$value instanceof \Stringable) {
throw new BadRequestException(\sprintf('Input value "%s" contains a non-scalar value.', $key));
}
return $this === $value ? $default : $value;
}
/**
* Replaces the current input values by a new set.
*/
public function replace(array $inputs = []): void
{
$this->parameters = [];
$this->add($inputs);
}
/**
* Adds input values.
*/
public function add(array $inputs = []): void
{
foreach ($inputs as $input => $value) {
$this->set($input, $value);
}
}
/**
* Sets an input by name.
*
* @param string|int|float|bool|array|null $value
*/
public function set(string $key, mixed $value): void
{
if (null !== $value && !\is_scalar($value) && !\is_array($value) && !$value instanceof \Stringable) {
throw new \InvalidArgumentException(\sprintf('Expected a scalar, or an array as a 2nd argument to "%s()", "%s" given.', __METHOD__, get_debug_type($value)));
}
$this->parameters[$key] = $value;
}
/**
* Returns the parameter value converted to an enum.
*
* @template T of \BackedEnum
*
* @param class-string<T> $class
* @param ?T $default
*
* @return ?T
*
* @psalm-return ($default is null ? T|null : T)
*
* @throws BadRequestException if the input cannot be converted to an enum
*/
public function getEnum(string $key, string $class, ?\BackedEnum $default = null): ?\BackedEnum
{
try {
return parent::getEnum($key, $class, $default);
} catch (UnexpectedValueException $e) {
throw new BadRequestException($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Returns the parameter value converted to string.
*
* @throws BadRequestException if the input contains a non-scalar value
*/
public function getString(string $key, string $default = ''): string
{
// Shortcuts the parent method because the validation on scalar is already done in get().
return (string) $this->get($key, $default);
}
/**
* @throws BadRequestException if the input value is an array and \FILTER_REQUIRE_ARRAY or \FILTER_FORCE_ARRAY is not set
* @throws BadRequestException if the input value is invalid and \FILTER_NULL_ON_FAILURE is not set
*/
public function filter(string $key, mixed $default = null, int $filter = \FILTER_DEFAULT, mixed $options = []): mixed
{
$value = $this->has($key) ? $this->all()[$key] : $default;
// Always turn $options into an array - this allows filter_var option shortcuts.
if (!\is_array($options) && $options) {
$options = ['flags' => $options];
}
if (\is_array($value) && !(($options['flags'] ?? 0) & (\FILTER_REQUIRE_ARRAY | \FILTER_FORCE_ARRAY))) {
throw new BadRequestException(\sprintf('Input value "%s" contains an array, but "FILTER_REQUIRE_ARRAY" or "FILTER_FORCE_ARRAY" flags were not set.', $key));
}
if ((\FILTER_CALLBACK & $filter) && !(($options['options'] ?? null) instanceof \Closure)) {
throw new \InvalidArgumentException(\sprintf('A Closure must be passed to "%s()" when FILTER_CALLBACK is used, "%s" given.', __METHOD__, get_debug_type($options['options'] ?? null)));
}
$options['flags'] ??= 0;
$nullOnFailure = $options['flags'] & \FILTER_NULL_ON_FAILURE;
$options['flags'] |= \FILTER_NULL_ON_FAILURE;
$value = filter_var($value, $filter, $options);
if (null !== $value || $nullOnFailure) {
return $value;
}
throw new BadRequestException(\sprintf('Input value "%s" is invalid and flag "FILTER_NULL_ON_FAILURE" was not set.', $key));
}
}