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File / Folder	Size	Action
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Exception	--	ren
File	--	ren
RateLimiter	--	ren
RequestMatcher	--	ren
Session	--	ren
Test	--	ren
AcceptHeader.php	3.355KB	edt ren
AcceptHeaderItem.php	3.188KB	edt ren
BinaryFileResponse.php	12.329KB	edt ren
CHANGELOG.md	19.114KB	edt ren
ChainRequestMatcher.php	0.853KB	edt ren
Cookie.php	11.93KB	edt ren
ExpressionRequestMatche...	1.934KB	edt ren
FileBag.php	3.743KB	edt ren
HeaderBag.php	7.123KB	edt ren
HeaderUtils.php	8.917KB	edt ren
InputBag.php	5.012KB	edt ren
IpUtils.php	7.447KB	edt ren
JsonResponse.php	6.639KB	edt ren
LICENSE	1.043KB	edt ren
ParameterBag.php	7.456KB	edt ren
README.md	0.514KB	edt ren
RedirectResponse.php	2.487KB	edt ren
Request.php	67.421KB	edt ren
RequestMatcher.php	5.21KB	edt ren
RequestMatcherInterface...	0.606KB	edt ren
RequestStack.php	2.638KB	edt ren
Response.php	40.163KB	edt ren
ResponseHeaderBag.php	7.788KB	edt ren
ServerBag.php	3.916KB	edt ren
StreamedJsonResponse.php	5.64KB	edt ren
StreamedResponse.php	2.997KB	edt ren
UriSigner.php	3.207KB	edt ren
UrlHelper.php	3.051KB	edt ren
composer.json	1.291KB	edt ren

<?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;

// Help opcache.preload discover always-needed symbols
class_exists(AcceptHeaderItem::class);

/**
 * Represents an Accept-* header.
 *
 * An accept header is compound with a list of items,
 * sorted by descending quality.
 *
 * @author Jean-François Simon <contact@jfsimon.fr>
 */
class AcceptHeader
{
    /**
     * @var AcceptHeaderItem[]
     */
    private array $items = [];

private bool $sorted = true;

/**
     * @param AcceptHeaderItem[] $items
     */
    public function __construct(array $items)
    {
        foreach ($items as $item) {
            $this->add($item);
        }
    }

/**
     * Builds an AcceptHeader instance from a string.
     */
    public static function fromString(?string $headerValue): self
    {
        $parts = HeaderUtils::split($headerValue ?? '', ',;=');

return new self(array_map(function ($subParts) {
            static $index = 0;
            $part = array_shift($subParts);
            $attributes = HeaderUtils::combine($subParts);

$item = new AcceptHeaderItem($part[0], $attributes);
            $item->setIndex($index++);

return $item;
        }, $parts));
    }

/**
     * Returns header value's string representation.
     */
    public function __toString(): string
    {
        return implode(',', $this->items);
    }

/**
     * Tests if header has given value.
     */
    public function has(string $value): bool
    {
        return isset($this->items[$value]);
    }

/**
     * Returns given value's item, if exists.
     */
    public function get(string $value): ?AcceptHeaderItem
    {
        return $this->items[$value] ?? $this->items[explode('/', $value)[0].'/*'] ?? $this->items['*/*'] ?? $this->items['*'] ?? null;
    }

/**
     * Adds an item.
     *
     * @return $this
     */
    public function add(AcceptHeaderItem $item): static
    {
        $this->items[$item->getValue()] = $item;
        $this->sorted = false;

return $this;
    }

/**
     * Returns all items.
     *
     * @return AcceptHeaderItem[]
     */
    public function all(): array
    {
        $this->sort();

return $this->items;
    }

/**
     * Filters items on their value using given regex.
     */
    public function filter(string $pattern): self
    {
        return new self(array_filter($this->items, fn (AcceptHeaderItem $item) => preg_match($pattern, $item->getValue())));
    }

/**
     * Returns first item.
     */
    public function first(): ?AcceptHeaderItem
    {
        $this->sort();

return $this->items ? reset($this->items) : null;
    }

/**
     * Sorts items by descending quality.
     */
    private function sort(): void
    {
        if (!$this->sorted) {
            uasort($this->items, function (AcceptHeaderItem $a, AcceptHeaderItem $b) {
                $qA = $a->getQuality();
                $qB = $b->getQuality();

if ($qA === $qB) {
                    return $a->getIndex() > $b->getIndex() ? 1 : -1;
                }

return $qA > $qB ? -1 : 1;
            });

$this->sorted = true;
        }
    }
}