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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\HttpFoundation;
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use Symfony\Component\HttpFoundation\File\UploadedFile;
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/**
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* FileBag is a container for uploaded files.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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* @author Bulat Shakirzyanov <mallluhuct@gmail.com>
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*/
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class FileBag extends ParameterBag
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{
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private const FILE_KEYS = ['error', 'name', 'size', 'tmp_name', 'type'];
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/**
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* @param array|UploadedFile[] $parameters An array of HTTP files
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*/
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public function __construct(array $parameters = [])
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{
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$this->replace($parameters);
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}
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public function replace(array $files = [])
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{
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$this->parameters = [];
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$this->add($files);
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}
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public function set(string $key, mixed $value)
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{
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if (!\is_array($value) && !$value instanceof UploadedFile) {
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throw new \InvalidArgumentException('An uploaded file must be an array or an instance of UploadedFile.');
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}
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parent::set($key, $this->convertFileInformation($value));
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}
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public function add(array $files = [])
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{
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foreach ($files as $key => $file) {
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$this->set($key, $file);
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}
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}
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/**
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* Converts uploaded files to UploadedFile instances.
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*
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* @return UploadedFile[]|UploadedFile|null
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*/
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protected function convertFileInformation(array|UploadedFile $file): array|UploadedFile|null
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{
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if ($file instanceof UploadedFile) {
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return $file;
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}
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$file = $this->fixPhpFilesArray($file);
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$keys = array_keys($file);
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sort($keys);
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if (self::FILE_KEYS == $keys) {
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if (\UPLOAD_ERR_NO_FILE == $file['error']) {
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$file = null;
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} else {
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$file = new UploadedFile($file['tmp_name'], $file['name'], $file['type'], $file['error'], false);
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}
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} else {
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$file = array_map(function ($v) { return $v instanceof UploadedFile || \is_array($v) ? $this->convertFileInformation($v) : $v; }, $file);
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if (array_keys($keys) === $keys) {
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$file = array_filter($file);
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}
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}
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return $file;
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}
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/**
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* Fixes a malformed PHP $_FILES array.
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*
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* PHP has a bug that the format of the $_FILES array differs, depending on
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* whether the uploaded file fields had normal field names or array-like
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* field names ("normal" vs. "parent[child]").
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*
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* This method fixes the array to look like the "normal" $_FILES array.
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*
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* It's safe to pass an already converted array, in which case this method
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* just returns the original array unmodified.
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*/
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protected function fixPhpFilesArray(array $data): array
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{
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// Remove extra key added by PHP 8.1.
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unset($data['full_path']);
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$keys = array_keys($data);
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sort($keys);
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if (self::FILE_KEYS != $keys || !isset($data['name']) || !\is_array($data['name'])) {
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return $data;
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}
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$files = $data;
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foreach (self::FILE_KEYS as $k) {
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unset($files[$k]);
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}
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foreach ($data['name'] as $key => $name) {
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$files[$key] = $this->fixPhpFilesArray([
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'error' => $data['error'][$key],
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'name' => $name,
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'type' => $data['type'][$key],
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'tmp_name' => $data['tmp_name'][$key],
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'size' => $data['size'][$key],
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]);
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}
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return $files;
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}
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}
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