vendor/guzzlehttp/psr7/src/Uri.php

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<?php

declare(strict_types=1);

namespace GuzzleHttp\Psr7;

use GuzzleHttp\Psr7\Exception\MalformedUriException;
use Psr\Http\Message\UriInterface;

/**
 * PSR-7 URI implementation.
 *
 * @author Michael Dowling
 * @author Tobias Schultze
 * @author Matthew Weier O'Phinney
 */
class Uri implements UriInterface, \JsonSerializable
{
    /**
     * Absolute http and https URIs require a host per RFC 7230 Section 2.7
     * but in generic URIs the host can be empty. So for http(s) URIs
     * we apply this default host when no host is given yet to form a
     * valid URI.
     */
    private const HTTP_DEFAULT_HOST = 'localhost';

    private const DEFAULT_PORTS = [
        'http'  => 80,
        'https' => 443,
        'ftp' => 21,
        'gopher' => 70,
        'nntp' => 119,
        'news' => 119,
        'telnet' => 23,
        'tn3270' => 23,
        'imap' => 143,
        'pop' => 110,
        'ldap' => 389,
    ];

    /**
     * Unreserved characters for use in a regex.
     *
     * @link https://tools.ietf.org/html/rfc3986#section-2.3
     */
    private const CHAR_UNRESERVED = 'a-zA-Z0-9_\-\.~';

    /**
     * Sub-delims for use in a regex.
     *
     * @link https://tools.ietf.org/html/rfc3986#section-2.2
     */
    private const CHAR_SUB_DELIMS = '!\$&\'\(\)\*\+,;=';
    private const QUERY_SEPARATORS_REPLACEMENT = ['=' => '%3D', '&' => '%26'];

    /** @var string Uri scheme. */
    private $scheme = '';

    /** @var string Uri user info. */
    private $userInfo = '';