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<?php
namespace React\Http\Message;
use Psr\Http\Message\UriInterface;
/**
* Respresents a URI (or URL).
*
* This class implements the
* [PSR-7 `UriInterface`](https://www.php-fig.org/psr/psr-7/#35-psrhttpmessageuriinterface).
*
* This is mostly used internally to represent the URI of each HTTP request
* message for our HTTP client and server implementations. Likewise, you may
* also use this class with other HTTP implementations and for tests.
*
* @see UriInterface
*/
final class Uri implements UriInterface
{
/** @var string */
private $scheme = '';
/** @var string */
private $userInfo = '';
/** @var string */
private $host = '';
/** @var ?int */
private $port = null;
/** @var string */
private $path = '';
/** @var string */
private $query = '';
/** @var string */
private $fragment = '';
/**
* @param string $uri
* @throws \InvalidArgumentException if given $uri is invalid
*/
public function __construct($uri)
{
// @codeCoverageIgnoreStart
if (\PHP_VERSION_ID < 50407 && \strpos($uri, '//') === 0) {
// @link https://3v4l.org/UrAQP
$parts = \parse_url('http:' . $uri);
unset($parts['schema']);
} else {
$parts = \parse_url($uri);
}
// @codeCoverageIgnoreEnd
if ($parts === false || (isset($parts['scheme']) && !\preg_match('#^[a-z]+$#i', $parts['scheme'])) || (isset($parts['host']) && \preg_match('#[\s%+]#', $parts['host']))) {
throw new \InvalidArgumentException('Invalid URI given');
}
if (isset($parts['scheme'])) {
$this->scheme = \strtolower($parts['scheme']);
}
if (isset($parts['user']) || isset($parts['pass'])) {
$this->userInfo = $this->encode(isset($parts['user']) ? $parts['user'] : '', \PHP_URL_USER) . (isset($parts['pass']) ? ':' . $this->encode($parts['pass'], \PHP_URL_PASS) : '');
}
if (isset($parts['host'])) {
$this->host = \strtolower($parts['host']);
}
if (isset($parts['port']) && !(($parts['port'] === 80 && $this->scheme === 'http') || ($parts['port'] === 443 && $this->scheme === 'https'))) {
$this->port = $parts['port'];
}
if (isset($parts['path'])) {
$this->path = $this->encode($parts['path'], \PHP_URL_PATH);
}
if (isset($parts['query'])) {
$this->query = $this->encode($parts['query'], \PHP_URL_QUERY);
}
if (isset($parts['fragment'])) {
$this->fragment = $this->encode($parts['fragment'], \PHP_URL_FRAGMENT);
}
}
public function getScheme()
{
return $this->scheme;
}
public function getAuthority()
{
if ($this->host === '') {
return '';
}
return ($this->userInfo !== '' ? $this->userInfo . '@' : '') . $this->host . ($this->port !== null ? ':' . $this->port : '');
}
public function getUserInfo()
{
return $this->userInfo;
}
public function getHost()
{
return $this->host;
}
public function getPort()
{
return $this->port;
}
public function getPath()
{
return $this->path;
}
public function getQuery()
{
return $this->query;
}
public function getFragment()
{
return $this->fragment;
}
public function withScheme($scheme)
{
$scheme = \strtolower($scheme);
if ($scheme === $this->scheme) {
return $this;
}
if (!\preg_match('#^[a-z]*$#', $scheme)) {
throw new \InvalidArgumentException('Invalid URI scheme given');
}
$new = clone $this;
$new->scheme = $scheme;
if (($this->port === 80 && $scheme === 'http') || ($this->port === 443 && $scheme === 'https')) {
$new->port = null;
}
return $new;
}
public function withUserInfo($user, $password = null)
{
$userInfo = $this->encode($user, \PHP_URL_USER) . ($password !== null ? ':' . $this->encode($password, \PHP_URL_PASS) : '');
if ($userInfo === $this->userInfo) {
return $this;
}
$new = clone $this;
$new->userInfo = $userInfo;
return $new;
}
public function withHost($host)
{
$host = \strtolower($host);
if ($host === $this->host) {
return $this;
}
if (\preg_match('#[\s%+]#', $host) || ($host !== '' && \parse_url('http://' . $host, \PHP_URL_HOST) !== $host)) {
throw new \InvalidArgumentException('Invalid URI host given');
}
$new = clone $this;
$new->host = $host;
return $new;
}
public function withPort($port)
{
$port = $port === null ? null : (int) $port;
if (($port === 80 && $this->scheme === 'http') || ($port === 443 && $this->scheme === 'https')) {
$port = null;
}
if ($port === $this->port) {
return $this;
}
if ($port !== null && ($port < 1 || $port > 0xffff)) {
throw new \InvalidArgumentException('Invalid URI port given');
}
$new = clone $this;
$new->port = $port;
return $new;
}
public function withPath($path)
{
$path = $this->encode($path, \PHP_URL_PATH);
if ($path === $this->path) {
return $this;
}
$new = clone $this;
$new->path = $path;
return $new;
}
public function withQuery($query)
{
$query = $this->encode($query, \PHP_URL_QUERY);
if ($query === $this->query) {
return $this;
}
$new = clone $this;
$new->query = $query;
return $new;
}
public function withFragment($fragment)
{
$fragment = $this->encode($fragment, \PHP_URL_FRAGMENT);
if ($fragment === $this->fragment) {
return $this;
}
$new = clone $this;
$new->fragment = $fragment;
return $new;
}
public function __toString()
{
$uri = '';
if ($this->scheme !== '') {
$uri .= $this->scheme . ':';
}
$authority = $this->getAuthority();
if ($authority !== '') {
$uri .= '//' . $authority;
}
if ($authority !== '' && isset($this->path[0]) && $this->path[0] !== '/') {
$uri .= '/' . $this->path;
} elseif ($authority === '' && isset($this->path[0]) && $this->path[0] === '/') {
$uri .= '/' . \ltrim($this->path, '/');
} else {
$uri .= $this->path;
}
if ($this->query !== '') {
$uri .= '?' . $this->query;
}
if ($this->fragment !== '') {
$uri .= '#' . $this->fragment;
}
return $uri;
}
/**
* @param string $part
* @param int $component
* @return string
*/
private function encode($part, $component)
{
return \preg_replace_callback(
'/(?:[^a-z0-9_\-\.~!\$&\'\(\)\*\+,;=' . ($component === \PHP_URL_PATH ? ':@\/' : ($component === \PHP_URL_QUERY || $component === \PHP_URL_FRAGMENT ? ':@\/\?' : '')) . '%]++|%(?![a-f0-9]{2}))/i',
function (array $match) {
return \rawurlencode($match[0]);
},
$part
);
}
/**
* [Internal] Resolve URI relative to base URI and return new absolute URI
*
* @internal
* @param UriInterface $base
* @param UriInterface $rel
* @return UriInterface
* @throws void
*/
public static function resolve(UriInterface $base, UriInterface $rel)
{
if ($rel->getScheme() !== '') {
return $rel->getPath() === '' ? $rel : $rel->withPath(self::removeDotSegments($rel->getPath()));
}
$reset = false;
$new = $base;
if ($rel->getAuthority() !== '') {
$reset = true;
$userInfo = \explode(':', $rel->getUserInfo(), 2);
$new = $base->withUserInfo($userInfo[0], isset($userInfo[1]) ? $userInfo[1]: null)->withHost($rel->getHost())->withPort($rel->getPort());
}
if ($reset && $rel->getPath() === '') {
$new = $new->withPath('');
} elseif (($path = $rel->getPath()) !== '') {
$start = '';
if ($path === '' || $path[0] !== '/') {
$start = $base->getPath();
if (\substr($start, -1) !== '/') {
$start .= '/../';
}
}
$reset = true;
$new = $new->withPath(self::removeDotSegments($start . $path));
}
if ($reset || $rel->getQuery() !== '') {
$reset = true;
$new = $new->withQuery($rel->getQuery());
}
if ($reset || $rel->getFragment() !== '') {
$new = $new->withFragment($rel->getFragment());
}
return $new;
}
/**
* @param string $path
* @return string
*/
private static function removeDotSegments($path)
{
$segments = array();
foreach (\explode('/', $path) as $segment) {
if ($segment === '..') {
\array_pop($segments);
} elseif ($segment !== '.' && $segment !== '') {
$segments[] = $segment;
}
}
return '/' . \implode('/', $segments) . ($path !== '/' && \substr($path, -1) === '/' ? '/' : '');
}
}