603 lines
15 KiB
PHP
603 lines
15 KiB
PHP
<?php
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namespace GuzzleHttp\Psr7;
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use Psr\Http\Message\UriInterface;
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/**
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* PSR-7 URI implementation.
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*
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* @author Michael Dowling
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* @author Tobias Schultze
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* @author Matthew Weier O'Phinney
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*/
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class Uri implements UriInterface
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{
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private static $schemes = [
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'http' => 80,
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'https' => 443,
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];
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private static $charUnreserved = 'a-zA-Z0-9_\-\.~';
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private static $charSubDelims = '!\$&\'\(\)\*\+,;=';
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private static $replaceQuery = ['=' => '%3D', '&' => '%26'];
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/** @var string Uri scheme. */
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private $scheme = '';
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/** @var string Uri user info. */
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private $userInfo = '';
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/** @var string Uri host. */
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private $host = '';
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/** @var int|null Uri port. */
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private $port;
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/** @var string Uri path. */
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private $path = '';
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/** @var string Uri query string. */
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private $query = '';
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/** @var string Uri fragment. */
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private $fragment = '';
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/**
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* @param string $uri URI to parse
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*/
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public function __construct($uri = '')
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{
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if ($uri != '') {
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$parts = parse_url($uri);
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if ($parts === false) {
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throw new \InvalidArgumentException("Unable to parse URI: $uri");
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}
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$this->applyParts($parts);
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}
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}
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public function __toString()
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{
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return self::createUriString(
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$this->scheme,
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$this->getAuthority(),
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$this->path,
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$this->query,
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$this->fragment
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);
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}
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/**
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* Removes dot segments from a path and returns the new path.
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*
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* @param string $path
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*
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* @return string
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* @link http://tools.ietf.org/html/rfc3986#section-5.2.4
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*/
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public static function removeDotSegments($path)
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{
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static $noopPaths = ['' => true, '/' => true, '*' => true];
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static $ignoreSegments = ['.' => true, '..' => true];
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if (isset($noopPaths[$path])) {
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return $path;
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}
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$results = [];
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$segments = explode('/', $path);
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foreach ($segments as $segment) {
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if ($segment === '..') {
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array_pop($results);
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} elseif (!isset($ignoreSegments[$segment])) {
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$results[] = $segment;
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}
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}
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$newPath = implode('/', $results);
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// Add the leading slash if necessary
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if (substr($path, 0, 1) === '/' &&
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substr($newPath, 0, 1) !== '/'
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) {
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$newPath = '/' . $newPath;
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}
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// Add the trailing slash if necessary
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if ($newPath !== '/' && isset($ignoreSegments[end($segments)])) {
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$newPath .= '/';
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}
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return $newPath;
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}
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/**
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* Resolve a base URI with a relative URI and return a new URI.
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*
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* @param UriInterface $base Base URI
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* @param string|UriInterface $rel Relative URI
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*
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* @return UriInterface
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* @link http://tools.ietf.org/html/rfc3986#section-5.2
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*/
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public static function resolve(UriInterface $base, $rel)
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{
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if (!($rel instanceof UriInterface)) {
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$rel = new self($rel);
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}
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if ((string) $rel === '') {
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// we can simply return the same base URI instance for this same-document reference
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return $base;
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}
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if ($rel->getScheme() != '') {
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return $rel->withPath(self::removeDotSegments($rel->getPath()));
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}
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if ($rel->getAuthority() != '') {
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$targetAuthority = $rel->getAuthority();
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$targetPath = self::removeDotSegments($rel->getPath());
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$targetQuery = $rel->getQuery();
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} else {
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$targetAuthority = $base->getAuthority();
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if ($rel->getPath() === '') {
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$targetPath = $base->getPath();
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$targetQuery = $rel->getQuery() != '' ? $rel->getQuery() : $base->getQuery();
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} else {
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if ($rel->getPath()[0] === '/') {
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$targetPath = $rel->getPath();
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} else {
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if ($targetAuthority != '' && $base->getPath() === '') {
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$targetPath = '/' . $rel->getPath();
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} else {
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$lastSlashPos = strrpos($base->getPath(), '/');
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if ($lastSlashPos === false) {
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$targetPath = $rel->getPath();
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} else {
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$targetPath = substr($base->getPath(), 0, $lastSlashPos + 1) . $rel->getPath();
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}
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}
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}
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$targetPath = self::removeDotSegments($targetPath);
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$targetQuery = $rel->getQuery();
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}
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}
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return new self(self::createUriString(
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$base->getScheme(),
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$targetAuthority,
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$targetPath,
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$targetQuery,
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$rel->getFragment()
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));
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}
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/**
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* Create a new URI with a specific query string value removed.
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*
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* Any existing query string values that exactly match the provided key are
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* removed.
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*
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* @param UriInterface $uri URI to use as a base.
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* @param string $key Query string key to remove.
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*
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* @return UriInterface
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*/
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public static function withoutQueryValue(UriInterface $uri, $key)
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{
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$current = $uri->getQuery();
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if ($current == '') {
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return $uri;
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}
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$decodedKey = rawurldecode($key);
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$result = array_filter(explode('&', $current), function ($part) use ($decodedKey) {
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return rawurldecode(explode('=', $part)[0]) !== $decodedKey;
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});
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return $uri->withQuery(implode('&', $result));
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}
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/**
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* Create a new URI with a specific query string value.
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*
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* Any existing query string values that exactly match the provided key are
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* removed and replaced with the given key value pair.
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*
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* A value of null will set the query string key without a value, e.g. "key"
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* instead of "key=value".
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*
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* @param UriInterface $uri URI to use as a base.
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* @param string $key Key to set.
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* @param string|null $value Value to set
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*
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* @return UriInterface
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*/
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public static function withQueryValue(UriInterface $uri, $key, $value)
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{
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$current = $uri->getQuery();
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if ($current == '') {
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$result = [];
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} else {
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$decodedKey = rawurldecode($key);
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$result = array_filter(explode('&', $current), function ($part) use ($decodedKey) {
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return rawurldecode(explode('=', $part)[0]) !== $decodedKey;
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});
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}
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// Query string separators ("=", "&") within the key or value need to be encoded
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// (while preventing double-encoding) before setting the query string. All other
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// chars that need percent-encoding will be encoded by withQuery().
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$key = strtr($key, self::$replaceQuery);
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if ($value !== null) {
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$result[] = $key . '=' . strtr($value, self::$replaceQuery);
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} else {
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$result[] = $key;
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}
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return $uri->withQuery(implode('&', $result));
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}
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/**
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* Create a URI from a hash of parse_url parts.
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*
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* @param array $parts
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*
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* @return self
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*/
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public static function fromParts(array $parts)
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{
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$uri = new self();
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$uri->applyParts($parts);
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return $uri;
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}
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public function getScheme()
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{
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return $this->scheme;
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}
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public function getAuthority()
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{
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if ($this->host == '') {
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return '';
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}
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$authority = $this->host;
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if ($this->userInfo != '') {
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$authority = $this->userInfo . '@' . $authority;
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}
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if ($this->port !== null) {
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$authority .= ':' . $this->port;
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}
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return $authority;
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}
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public function getUserInfo()
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{
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return $this->userInfo;
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}
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public function getHost()
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{
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return $this->host;
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}
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public function getPort()
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{
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return $this->port;
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}
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public function getPath()
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{
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return $this->path;
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}
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public function getQuery()
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{
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return $this->query;
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}
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public function getFragment()
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{
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return $this->fragment;
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}
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public function withScheme($scheme)
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{
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$scheme = $this->filterScheme($scheme);
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if ($this->scheme === $scheme) {
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return $this;
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}
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$new = clone $this;
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$new->scheme = $scheme;
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$new->port = $new->filterPort($new->port);
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return $new;
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}
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public function withUserInfo($user, $password = null)
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{
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$info = $user;
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if ($password != '') {
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$info .= ':' . $password;
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}
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if ($this->userInfo === $info) {
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return $this;
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}
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$new = clone $this;
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$new->userInfo = $info;
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return $new;
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}
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public function withHost($host)
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{
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$host = $this->filterHost($host);
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if ($this->host === $host) {
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return $this;
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}
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$new = clone $this;
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$new->host = $host;
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return $new;
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}
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public function withPort($port)
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{
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$port = $this->filterPort($port);
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if ($this->port === $port) {
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return $this;
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}
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$new = clone $this;
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$new->port = $port;
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return $new;
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}
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public function withPath($path)
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{
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$path = $this->filterPath($path);
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if ($this->path === $path) {
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return $this;
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}
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$new = clone $this;
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$new->path = $path;
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return $new;
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}
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public function withQuery($query)
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{
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$query = $this->filterQueryAndFragment($query);
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if ($this->query === $query) {
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return $this;
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}
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$new = clone $this;
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$new->query = $query;
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return $new;
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}
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public function withFragment($fragment)
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{
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$fragment = $this->filterQueryAndFragment($fragment);
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if ($this->fragment === $fragment) {
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return $this;
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}
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$new = clone $this;
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$new->fragment = $fragment;
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return $new;
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}
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/**
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* Apply parse_url parts to a URI.
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*
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* @param array $parts Array of parse_url parts to apply.
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*/
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private function applyParts(array $parts)
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{
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$this->scheme = isset($parts['scheme'])
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? $this->filterScheme($parts['scheme'])
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: '';
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$this->userInfo = isset($parts['user']) ? $parts['user'] : '';
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$this->host = isset($parts['host'])
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? $this->filterHost($parts['host'])
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: '';
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$this->port = isset($parts['port'])
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? $this->filterPort($parts['port'])
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: null;
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$this->path = isset($parts['path'])
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? $this->filterPath($parts['path'])
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: '';
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$this->query = isset($parts['query'])
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? $this->filterQueryAndFragment($parts['query'])
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: '';
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$this->fragment = isset($parts['fragment'])
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? $this->filterQueryAndFragment($parts['fragment'])
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: '';
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if (isset($parts['pass'])) {
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$this->userInfo .= ':' . $parts['pass'];
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}
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}
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/**
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* Create a URI string from its various parts
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*
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* @param string $scheme
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* @param string $authority
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* @param string $path
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* @param string $query
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* @param string $fragment
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* @return string
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*/
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private static function createUriString($scheme, $authority, $path, $query, $fragment)
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{
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$uri = '';
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if ($scheme != '') {
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$uri .= $scheme . ':';
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}
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if ($authority != '') {
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$uri .= '//' . $authority;
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}
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if ($path != '') {
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if ($path[0] !== '/') {
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if ($authority != '') {
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// If the path is rootless and an authority is present, the path MUST be prefixed by "/"
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$path = '/' . $path;
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}
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} elseif (isset($path[1]) && $path[1] === '/') {
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if ($authority == '') {
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// If the path is starting with more than one "/" and no authority is present, the
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// starting slashes MUST be reduced to one.
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$path = '/' . ltrim($path, '/');
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}
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}
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$uri .= $path;
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}
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if ($query != '') {
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$uri .= '?' . $query;
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}
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if ($fragment != '') {
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$uri .= '#' . $fragment;
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}
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return $uri;
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}
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/**
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* Is a given port non-standard for the current scheme?
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*
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* @param string $scheme
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* @param int $port
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*
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* @return bool
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*/
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private static function isNonStandardPort($scheme, $port)
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{
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return !isset(self::$schemes[$scheme]) || $port !== self::$schemes[$scheme];
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}
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/**
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* @param string $scheme
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*
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* @return string
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*
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* @throws \InvalidArgumentException If the scheme is invalid.
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*/
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private function filterScheme($scheme)
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{
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if (!is_string($scheme)) {
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throw new \InvalidArgumentException('Scheme must be a string');
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}
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return strtolower($scheme);
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}
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/**
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* @param string $host
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*
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* @return string
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*
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* @throws \InvalidArgumentException If the host is invalid.
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*/
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private function filterHost($host)
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{
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if (!is_string($host)) {
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throw new \InvalidArgumentException('Host must be a string');
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}
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return strtolower($host);
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}
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/**
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* @param int|null $port
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*
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* @return int|null
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*
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* @throws \InvalidArgumentException If the port is invalid.
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*/
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private function filterPort($port)
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{
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if ($port === null) {
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return null;
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}
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$port = (int) $port;
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if (1 > $port || 0xffff < $port) {
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throw new \InvalidArgumentException(
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sprintf('Invalid port: %d. Must be between 1 and 65535', $port)
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);
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}
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return self::isNonStandardPort($this->scheme, $port) ? $port : null;
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}
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/**
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* Filters the path of a URI
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*
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* @param string $path
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*
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* @return string
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*
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* @throws \InvalidArgumentException If the path is invalid.
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*/
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private function filterPath($path)
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{
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if (!is_string($path)) {
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throw new \InvalidArgumentException('Path must be a string');
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}
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return preg_replace_callback(
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'/(?:[^' . self::$charUnreserved . self::$charSubDelims . '%:@\/]++|%(?![A-Fa-f0-9]{2}))/',
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[$this, 'rawurlencodeMatchZero'],
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$path
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);
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}
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/**
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* Filters the query string or fragment of a URI.
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*
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* @param string $str
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*
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* @return string
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*
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* @throws \InvalidArgumentException If the query or fragment is invalid.
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*/
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private function filterQueryAndFragment($str)
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{
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if (!is_string($str)) {
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throw new \InvalidArgumentException('Query and fragment must be a string');
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}
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return preg_replace_callback(
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'/(?:[^' . self::$charUnreserved . self::$charSubDelims . '%:@\/\?]++|%(?![A-Fa-f0-9]{2}))/',
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[$this, 'rawurlencodeMatchZero'],
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$str
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);
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}
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private function rawurlencodeMatchZero(array $match)
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{
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return rawurlencode($match[0]);
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}
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}
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