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<?php |
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declare(strict_types = 1); |
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namespace GoetasWebservices\XML\XSDReader\Utils; |
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class UrlUtils |
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{ |
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public static function resolveRelativeUrl( |
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string $base, |
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string $rel |
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) : string { |
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if (!$rel) { |
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return $base; |
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} elseif ( |
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/* return if already absolute URL */ |
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parse_url($rel, PHP_URL_SCHEME) !== null || |
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substr($rel, 0, 2) === '//' |
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) { |
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return $rel; |
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} elseif ( |
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/* queries and anchors */ |
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in_array( |
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$rel[0], |
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[ |
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'#', |
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'?' |
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] |
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) |
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) { |
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return $base.$rel; |
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} |
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return static::resolveRelativeUrlAfterEarlyChecks($base, $rel); |
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} |
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protected static function resolveRelativeUrlAfterEarlyChecks( |
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string $base, |
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string $rel |
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) : string { |
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/* fix url file for Windows */ |
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$base = preg_replace('#^file:\/\/([^/])#', 'file:///\1', $base); |
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/* |
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* parse base URL and convert to local variables: |
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* $scheme, $host, $path |
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*/ |
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$parts = parse_url($base); |
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return static::resolveRelativeUrlToAbsoluteUrl( |
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$rel, |
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( |
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$rel[0] === '/' |
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? '' // destroy path if relative url points to root |
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: ( // remove non-directory element from path |
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isset($parts['path']) |
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? preg_replace('#/[^/]*$#', '', $parts["path"]) |
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: '' |
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) |
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), |
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$parts |
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); |
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} |
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protected static function resolveRelativeUrlToAbsoluteUrl( |
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string $rel, |
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string $path, |
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array $parts |
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) : string { |
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/* Build absolute URL */ |
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$abs = ''; |
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if (isset($parts["host"])) { |
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$abs .= $parts['host']; |
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} |
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if (isset($parts["port"])) { |
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$abs .= ":".$parts["port"]; |
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} |
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$abs .= $path."/".$rel; |
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$abs = static::replaceSuperfluousSlashes($abs); |
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if (isset($parts["scheme"])) { |
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$abs = $parts["scheme"].'://'.$abs; |
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} |
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return $abs; |
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} |
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/** |
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* replace superfluous slashes with a single slash. |
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* covers: |
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* // |
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* /./ |
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* /foo/../ |
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* |
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* @param string $abs |
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* |
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* @return string |
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*/ |
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protected static function replaceSuperfluousSlashes($abs) { |
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$n = 1; |
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do { |
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$abs = preg_replace( |
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'#(?:(?:/\.?/)|(?!\.\.)[^/]+/\.\./)#', |
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'/', |
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$abs, |
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-1, |
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$n |
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); |
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} while ($n > 0); |
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return $abs; |
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} |
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} |
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SignpostMarv /
xsd-reader
