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<?php |
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/** |
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* vipnytt/RobotsTxtParser |
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* |
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* @link https://github.com/VIPnytt/RobotsTxtParser |
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* @license https://github.com/VIPnytt/RobotsTxtParser/blob/master/LICENSE The MIT License (MIT) |
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*/ |
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namespace vipnytt\RobotsTxtParser\Parser\Directives; |
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use vipnytt\RobotsTxtParser\Client\Directives\CleanParamClient; |
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use vipnytt\RobotsTxtParser\Handler\RenderHandler; |
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use vipnytt\RobotsTxtParser\Parser\UriParser; |
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use vipnytt\RobotsTxtParser\RobotsTxtInterface; |
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/** |
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* Class CleanParamParser |
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* |
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* @package vipnytt\RobotsTxtParser\Parser\Directives |
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*/ |
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class CleanParamParser implements ParserInterface, RobotsTxtInterface |
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{ |
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/** |
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* Clean-param array |
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* @var string[][] |
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*/ |
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private $cleanParam = []; |
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/** |
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* Sort result |
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* @var bool |
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*/ |
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private $sort = false; |
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/** |
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* CleanParamParser constructor. |
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*/ |
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public function __construct() |
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{ |
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} |
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/** |
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* Client |
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* |
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* @return CleanParamClient |
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*/ |
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public function client() |
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{ |
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$this->sort(); |
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return new CleanParamClient($this->cleanParam); |
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} |
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/** |
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* Sort by length |
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* |
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* @return bool |
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*/ |
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private function sort() |
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{ |
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if ($this->sort) { |
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return $this->sort; |
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}; |
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return $this->sort = array_multisort($this->cleanParam) && ksort($this->cleanParam); |
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} |
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/** |
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* Add |
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* |
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* @param string $line |
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* @return bool |
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*/ |
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public function add($line) |
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{ |
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$path = '/'; |
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// split into parameter and path |
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$array = array_map('trim', mb_split('\s+', $line, 2)); |
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if (isset($array[1])) { |
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// strip any invalid characters from path prefix |
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$uriParser = new UriParser(preg_replace('/[^A-Za-z0-9\.-\/\*\_]/', '', $array[1])); |
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$path = rtrim($uriParser->encode(), '*'); |
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// make sure path is valid |
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$path = in_array(substr($path, 0, 1), [ |
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'/', |
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'*', |
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]) ? $path : '/'; |
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} |
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$param = array_map('trim', explode('&', $array[0])); |
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foreach ($param as $key) { |
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$this->cleanParam[$key][] = $path; |
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} |
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return true; |
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} |
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/** |
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* Render |
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* |
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* @param RenderHandler $handler |
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* @return bool |
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*/ |
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public function render(RenderHandler $handler) |
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{ |
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$this->sort(); |
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return $handler->getLevel() == 2 ? $this->renderExtensive($handler) : $this->renderCompressed($handler); |
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} |
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/** |
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* Render extensive |
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* |
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* @param RenderHandler $handler |
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* @return bool |
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*/ |
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private function renderExtensive(RenderHandler $handler) |
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{ |
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foreach ($this->cleanParam as $param => $paths) { |
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foreach ($paths as $path) { |
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$handler->add(self::DIRECTIVE_CLEAN_PARAM, $param . ' ' . $path); |
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} |
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} |
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return true; |
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} |
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/** |
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* Render compressed |
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* |
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* @param RenderHandler $handler |
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* @return bool |
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*/ |
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private function renderCompressed(RenderHandler $handler) |
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{ |
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$pair = $this->cleanParam; |
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while (($currentPair = current($pair)) !== false) { |
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$equalParams = array_keys($pair, $currentPair); |
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foreach ($currentPair as $path) { |
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$handler->add(self::DIRECTIVE_CLEAN_PARAM, implode('&', $equalParams) . ' ' . $path); |
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} |
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foreach ($equalParams as $param) { |
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unset($pair[$param]); |
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} |
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} |
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return true; |
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} |
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} |
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VIPnytt /
RobotsTxtParser
