X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs-website;a=blobdiff_plain;f=vendor%2Fguzzlehttp%2Fpsr7%2Fsrc%2FUriResolver.php;fp=vendor%2Fguzzlehttp%2Fpsr7%2Fsrc%2FUriResolver.php;h=c1cb8a275af212848f5014f424cc5732e4d32906;hp=0000000000000000000000000000000000000000;hb=a2bd1bf0c2c1f1a17d188f4dc0726a45494cefae;hpb=57c063afa3f66b07c4bbddc2d6129a96d90f0aad diff --git a/vendor/guzzlehttp/psr7/src/UriResolver.php b/vendor/guzzlehttp/psr7/src/UriResolver.php new file mode 100644 index 000000000..c1cb8a275 --- /dev/null +++ b/vendor/guzzlehttp/psr7/src/UriResolver.php @@ -0,0 +1,219 @@ +getScheme() != '') { + return $rel->withPath(self::removeDotSegments($rel->getPath())); + } + + if ($rel->getAuthority() != '') { + $targetAuthority = $rel->getAuthority(); + $targetPath = self::removeDotSegments($rel->getPath()); + $targetQuery = $rel->getQuery(); + } else { + $targetAuthority = $base->getAuthority(); + if ($rel->getPath() === '') { + $targetPath = $base->getPath(); + $targetQuery = $rel->getQuery() != '' ? $rel->getQuery() : $base->getQuery(); + } else { + if ($rel->getPath()[0] === '/') { + $targetPath = $rel->getPath(); + } else { + if ($targetAuthority != '' && $base->getPath() === '') { + $targetPath = '/' . $rel->getPath(); + } else { + $lastSlashPos = strrpos($base->getPath(), '/'); + if ($lastSlashPos === false) { + $targetPath = $rel->getPath(); + } else { + $targetPath = substr($base->getPath(), 0, $lastSlashPos + 1) . $rel->getPath(); + } + } + } + $targetPath = self::removeDotSegments($targetPath); + $targetQuery = $rel->getQuery(); + } + } + + return new Uri(Uri::composeComponents( + $base->getScheme(), + $targetAuthority, + $targetPath, + $targetQuery, + $rel->getFragment() + )); + } + + /** + * Returns the target URI as a relative reference from the base URI. + * + * This method is the counterpart to resolve(): + * + * (string) $target === (string) UriResolver::resolve($base, UriResolver::relativize($base, $target)) + * + * One use-case is to use the current request URI as base URI and then generate relative links in your documents + * to reduce the document size or offer self-contained downloadable document archives. + * + * $base = new Uri('http://example.com/a/b/'); + * echo UriResolver::relativize($base, new Uri('http://example.com/a/b/c')); // prints 'c'. + * echo UriResolver::relativize($base, new Uri('http://example.com/a/x/y')); // prints '../x/y'. + * echo UriResolver::relativize($base, new Uri('http://example.com/a/b/?q')); // prints '?q'. + * echo UriResolver::relativize($base, new Uri('http://example.org/a/b/')); // prints '//example.org/a/b/'. + * + * This method also accepts a target that is already relative and will try to relativize it further. Only a + * relative-path reference will be returned as-is. + * + * echo UriResolver::relativize($base, new Uri('/a/b/c')); // prints 'c' as well + * + * @param UriInterface $base Base URI + * @param UriInterface $target Target URI + * + * @return UriInterface The relative URI reference + */ + public static function relativize(UriInterface $base, UriInterface $target) + { + if ($target->getScheme() !== '' && + ($base->getScheme() !== $target->getScheme() || $target->getAuthority() === '' && $base->getAuthority() !== '') + ) { + return $target; + } + + if (Uri::isRelativePathReference($target)) { + // As the target is already highly relative we return it as-is. It would be possible to resolve + // the target with `$target = self::resolve($base, $target);` and then try make it more relative + // by removing a duplicate query. But let's not do that automatically. + return $target; + } + + if ($target->getAuthority() !== '' && $base->getAuthority() !== $target->getAuthority()) { + return $target->withScheme(''); + } + + // We must remove the path before removing the authority because if the path starts with two slashes, the URI + // would turn invalid. And we also cannot set a relative path before removing the authority, as that is also + // invalid. + $emptyPathUri = $target->withScheme('')->withPath('')->withUserInfo('')->withPort(null)->withHost(''); + + if ($base->getPath() !== $target->getPath()) { + return $emptyPathUri->withPath(self::getRelativePath($base, $target)); + } + + if ($base->getQuery() === $target->getQuery()) { + // Only the target fragment is left. And it must be returned even if base and target fragment are the same. + return $emptyPathUri->withQuery(''); + } + + // If the base URI has a query but the target has none, we cannot return an empty path reference as it would + // inherit the base query component when resolving. + if ($target->getQuery() === '') { + $segments = explode('/', $target->getPath()); + $lastSegment = end($segments); + + return $emptyPathUri->withPath($lastSegment === '' ? './' : $lastSegment); + } + + return $emptyPathUri; + } + + private static function getRelativePath(UriInterface $base, UriInterface $target) + { + $sourceSegments = explode('/', $base->getPath()); + $targetSegments = explode('/', $target->getPath()); + array_pop($sourceSegments); + $targetLastSegment = array_pop($targetSegments); + foreach ($sourceSegments as $i => $segment) { + if (isset($targetSegments[$i]) && $segment === $targetSegments[$i]) { + unset($sourceSegments[$i], $targetSegments[$i]); + } else { + break; + } + } + $targetSegments[] = $targetLastSegment; + $relativePath = str_repeat('../', count($sourceSegments)) . implode('/', $targetSegments); + + // A reference to am empty last segment or an empty first sub-segment must be prefixed with "./". + // This also applies to a segment with a colon character (e.g., "file:colon") that cannot be used + // as the first segment of a relative-path reference, as it would be mistaken for a scheme name. + if ('' === $relativePath || false !== strpos(explode('/', $relativePath, 2)[0], ':')) { + $relativePath = "./$relativePath"; + } elseif ('/' === $relativePath[0]) { + if ($base->getAuthority() != '' && $base->getPath() === '') { + // In this case an extra slash is added by resolve() automatically. So we must not add one here. + $relativePath = ".$relativePath"; + } else { + $relativePath = "./$relativePath"; + } + } + + return $relativePath; + } + + private function __construct() + { + // cannot be instantiated + } +}