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<?php
declare(strict_types=1);
namespace Nyholm\Psr7;
use Psr\Http\Message\UriInterface;
/**
* PSR-7 URI implementation.
*
* @author Michael Dowling
* @author Tobias Schultze
* @author Matthew Weier O'Phinney
* @author Tobias Nyholm <tobias.nyholm@gmail.com>
* @author Martijn van der Ven <martijn@vanderven.se>
*
* @final This class should never be extended. See https://github.com/Nyholm/psr7/blob/master/doc/final.md
*/
class Uri implements UriInterface
{
private const SCHEMES = ['http' => 80, 'https' => 443];
private const CHAR_UNRESERVED = 'a-zA-Z0-9_\-\.~';
private const CHAR_SUB_DELIMS = '!\$&\'\(\)\*\+,;=';
/** @var string Uri scheme. */
private $scheme = '';
/** @var string Uri user info. */
private $userInfo = '';
/** @var string Uri host. */
private $host = '';
/** @var int|null Uri port. */
private $port;
/** @var string Uri path. */
private $path = '';
/** @var string Uri query string. */
private $query = '';
/** @var string Uri fragment. */
private $fragment = '';
public function __construct(string $uri = '')
{
if ('' !== $uri) {
if (false === $parts = \parse_url($uri)) {
throw new \InvalidArgumentException(\sprintf('Unable to parse URI: "%s"', $uri));
}
// Apply parse_url parts to a URI.
$this->scheme = isset($parts['scheme']) ? \strtr($parts['scheme'], 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz') : '';
$this->userInfo = $parts['user'] ?? '';
$this->host = isset($parts['host']) ? \strtr($parts['host'], 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz') : '';
$this->port = isset($parts['port']) ? $this->filterPort($parts['port']) : null;
$this->path = isset($parts['path']) ? $this->filterPath($parts['path']) : '';
$this->query = isset($parts['query']) ? $this->filterQueryAndFragment($parts['query']) : '';
$this->fragment = isset($parts['fragment']) ? $this->filterQueryAndFragment($parts['fragment']) : '';
if (isset($parts['pass'])) {
$this->userInfo .= ':' . $parts['pass'];
}
}
}
public function __toString(): string
{
return self::createUriString($this->scheme, $this->getAuthority(), $this->path, $this->query, $this->fragment);
}
public function getScheme(): string
{
return $this->scheme;
}
public function getAuthority(): string
{
if ('' === $this->host) {
return '';
}
$authority = $this->host;
if ('' !== $this->userInfo) {
$authority = $this->userInfo . '@' . $authority;
}
if (null !== $this->port) {
$authority .= ':' . $this->port;
}
return $authority;
}
public function getUserInfo(): string
{
return $this->userInfo;
}
public function getHost(): string
{
return $this->host;
}
public function getPort(): ?int
{
return $this->port;
}
public function getPath(): string
{
return $this->path;
}
public function getQuery(): string
{
return $this->query;
}
public function getFragment(): string
{
return $this->fragment;
}
public function withScheme($scheme): self
{
if (!\is_string($scheme)) {
throw new \InvalidArgumentException('Scheme must be a string');
}
if ($this->scheme === $scheme = \strtr($scheme, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz')) {
return $this;
}
$new = clone $this;
$new->scheme = $scheme;
$new->port = $new->filterPort($new->port);
return $new;
}
public function withUserInfo($user, $password = null): self
{
$info = $user;
if (null !== $password && '' !== $password) {
$info .= ':' . $password;
}
if ($this->userInfo === $info) {
return $this;
}
$new = clone $this;
$new->userInfo = $info;
return $new;
}
public function withHost($host): self
{
if (!\is_string($host)) {
throw new \InvalidArgumentException('Host must be a string');
}
if ($this->host === $host = \strtr($host, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz')) {
return $this;
}
$new = clone $this;
$new->host = $host;
return $new;
}
public function withPort($port): self
{
if ($this->port === $port = $this->filterPort($port)) {
return $this;
}
$new = clone $this;
$new->port = $port;
return $new;
}
public function withPath($path): self
{
if ($this->path === $path = $this->filterPath($path)) {
return $this;
}
$new = clone $this;
$new->path = $path;
return $new;
}
public function withQuery($query): self
{
if ($this->query === $query = $this->filterQueryAndFragment($query)) {
return $this;
}
$new = clone $this;
$new->query = $query;
return $new;
}
public function withFragment($fragment): self
{
if ($this->fragment === $fragment = $this->filterQueryAndFragment($fragment)) {
return $this;
}
$new = clone $this;
$new->fragment = $fragment;
return $new;
}
/**
* Create a URI string from its various parts.
*/
private static function createUriString(string $scheme, string $authority, string $path, string $query, string $fragment): string
{
$uri = '';
if ('' !== $scheme) {
$uri .= $scheme . ':';
}
if ('' !== $authority) {
$uri .= '//' . $authority;
}
if ('' !== $path) {
if ('/' !== $path[0]) {
if ('' !== $authority) {
// If the path is rootless and an authority is present, the path MUST be prefixed by "/"
$path = '/' . $path;
}
} elseif (isset($path[1]) && '/' === $path[1]) {
if ('' === $authority) {
// If the path is starting with more than one "/" and no authority is present, the
// starting slashes MUST be reduced to one.
$path = '/' . \ltrim($path, '/');
}
}
$uri .= $path;
}
if ('' !== $query) {
$uri .= '?' . $query;
}
if ('' !== $fragment) {
$uri .= '#' . $fragment;
}
return $uri;
}
/**
* Is a given port non-standard for the current scheme?
*/
private static function isNonStandardPort(string $scheme, int $port): bool
{
return !isset(self::SCHEMES[$scheme]) || $port !== self::SCHEMES[$scheme];
}
private function filterPort($port): ?int
{
if (null === $port) {
return null;
}
$port = (int) $port;
if (0 > $port || 0xffff < $port) {
throw new \InvalidArgumentException(\sprintf('Invalid port: %d. Must be between 0 and 65535', $port));
}
return self::isNonStandardPort($this->scheme, $port) ? $port : null;
}
private function filterPath($path): string
{
if (!\is_string($path)) {
throw new \InvalidArgumentException('Path must be a string');
}
return \preg_replace_callback('/(?:[^' . self::CHAR_UNRESERVED . self::CHAR_SUB_DELIMS . '%:@\/]++|%(?![A-Fa-f0-9]{2}))/', [__CLASS__, 'rawurlencodeMatchZero'], $path);
}
private function filterQueryAndFragment($str): string
{
if (!\is_string($str)) {
throw new \InvalidArgumentException('Query and fragment must be a string');
}
return \preg_replace_callback('/(?:[^' . self::CHAR_UNRESERVED . self::CHAR_SUB_DELIMS . '%:@\/\?]++|%(?![A-Fa-f0-9]{2}))/', [__CLASS__, 'rawurlencodeMatchZero'], $str);
}
private static function rawurlencodeMatchZero(array $match): string
{
return \rawurlencode($match[0]);
}
}
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