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<?php |
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namespace AlexMasterov\TwigExtension; |
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use AlexMasterov\TwigExtension\Traits\ServerRequestTrait; |
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use Psr\Http\Message\UriInterface; |
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use Twig_Extension; |
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class Psr7UriExtension extends Twig_Extension |
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{ |
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use ServerRequestTrait; |
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/** |
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* @return string The extension name |
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*/ |
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public function getName() |
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{ |
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return 'psr7_uri'; |
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} |
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public function getFunctions() |
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{ |
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return [ |
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new \Twig_SimpleFunction('absolute_url', [$this, 'generateAbsoluteUrl']), |
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new \Twig_SimpleFunction('relative_path', [$this, 'generateRelativePath']) |
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]; |
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} |
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/** |
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* @param string $path |
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* |
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* @return string |
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*/ |
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public function generateAbsoluteUrl($path = null) |
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{ |
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$requestUri = $this->request->getUri(); |
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$url = $this->urlFromUri($requestUri); |
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if (null === $path) { |
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return $url; |
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} |
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if ($this->isNetworkPath($path)) { |
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return $path; |
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} |
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if (!$this->hasLeadingSlash($url)) { |
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$url = rtrim($url, '/') . "/{$path}"; |
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} |
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return $url; |
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} |
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/** |
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* @param UriInterface $uri |
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* |
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* @return string |
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*/ |
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protected function urlFromUri(UriInterface $uri) |
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{ |
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$host = $uri->getHost(); |
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$path = $uri->getPath(); |
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if (empty($host)) { |
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return $path; |
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} |
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$port = $uri->getPort(); |
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if (!empty($port)) { |
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$host .= ":{$port}"; |
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} |
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$scheme = $uri->getScheme(); |
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$url = "{$scheme}://{$host}{$path}"; |
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return $url; |
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} |
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/** |
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* @param string $path |
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* |
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* @return string |
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*/ |
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public function generateRelativePath($path) |
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{ |
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if ($this->isNetworkPath($path) || !$this->hasLeadingSlash($path)) { |
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return $path; |
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} |
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$uri = $this->request->getUri(); |
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$basePath = $uri->getPath(); |
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if ($path === $basePath) { |
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return ''; |
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} |
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$baseParts = explode('/', $basePath, -1); |
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$pathParts = explode('/', $path); |
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foreach ($baseParts as $i => $segment) { |
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if (isset($pathParts[$i]) && $segment === $pathParts[$i]) { |
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unset($baseParts[$i], $pathParts[$i]); |
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} else { |
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break; |
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} |
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} |
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$path = str_repeat('../', count($baseParts)) . implode('/', $pathParts); |
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if (empty($path)) { |
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return './'; |
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} |
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if (empty($baseParts) && false !== strpos(current($pathParts), ':')) { |
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$path = './' . $path; |
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} |
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return $path; |
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} |
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/** |
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* @param string $path |
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* |
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* @return bool |
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*/ |
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protected function isNetworkPath($path) |
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{ |
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return false !== strpos($path, '://') |
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|| '//' === substr($path, 0, 2); |
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} |
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/** |
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* @param string $path |
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* |
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* @return bool |
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*/ |
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protected function hasLeadingSlash($path) |
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{ |
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return isset($path[0]) && '/' === $path[0]; |
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} |
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} |
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AlexMasterov /
twig-extension
