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<?php |
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namespace Limonte; |
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class AdblockRule |
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{ |
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const FILTER_REGEXES = [ |
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'/\$[script|image|stylesheet|object|object\-subrequest|subdocument|xmlhttprequest|websocket|webrtc|popup|generichide|genericblock|document|elemhide|third\-party|domain|rewrite]+.*domain=~?(.*)/i' => '$1', |
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'/\$[script|image|stylesheet|object|object\-subrequest|subdocument|xmlhttprequest|websocket|webrtc|popup|generichide|genericblock|document|elemhide|third\-party|domain|rewrite]+.*$/i' => '', |
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'/([\\\.\$\+\?\{\}\(\)\[\]\/])/' => '\\\\$1' |
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]; |
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/** |
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* @var string |
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*/ |
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private $rule; |
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/** |
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* @var string |
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*/ |
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private $regex; |
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/** |
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* @var bool |
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*/ |
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private $isComment = false; |
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/** |
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* @var bool |
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*/ |
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private $isHtml = false; |
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/** |
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* @var bool |
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*/ |
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private $isException = false; |
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/** |
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* AdblockRule constructor. |
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* @param string $rule |
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* @throws InvalidRuleException |
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*/ |
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public function __construct(string $rule) |
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{ |
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$this->rule = $rule; |
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if (Str::startsWith($this->rule, '@@')) { |
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$this->isException = true; |
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$this->rule = mb_substr($this->rule, 2); |
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} |
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// comment |
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if (Str::startsWith($rule, '!') || Str::startsWith($rule, '[Adblock')) { |
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$this->isComment = true; |
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// HTML rule |
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} elseif (Str::contains($rule, '##') || Str::contains($rule, '#@#')) { |
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$this->isHtml = true; |
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// URI rule |
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} else { |
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$this->makeRegex(); |
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} |
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} |
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/** |
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* @param string $url |
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* |
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* @return boolean |
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*/ |
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public function matchUrl($url) |
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{ |
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try { |
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return (boolean)preg_match('/' . $this->getRegex() . '/', $url); |
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} catch (\Exception $e) { |
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throw new \Exception($e); |
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} |
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} |
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/** |
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* @return string |
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*/ |
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public function getRegex() |
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{ |
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return $this->regex; |
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} |
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/** |
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* @return string |
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*/ |
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public function getRule() |
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{ |
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return $this->rule; |
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} |
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/** |
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* @return boolean |
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*/ |
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public function isComment() |
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{ |
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return $this->isComment; |
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} |
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/** |
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* @return boolean |
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*/ |
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public function isHtml() |
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{ |
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return $this->isHtml; |
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} |
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/** |
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* @return boolean |
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*/ |
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public function isException() |
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{ |
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return $this->isException; |
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} |
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/** |
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* @throws InvalidRuleException |
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*/ |
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private function makeRegex() |
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{ |
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if (empty($this->rule)) { |
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throw new InvalidRuleException("Empty rule"); |
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} |
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$regex = $this->rule; |
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foreach (self::FILTER_REGEXES as $rule => $replacement) { |
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$regex = preg_replace($rule, $replacement, $regex); |
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} |
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// Separator character ^ matches anything but a letter, a digit, or |
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// one of the following: _ - . %. The end of the address is also |
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// accepted as separator. |
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$regex = str_replace("^", "([^\w\d_\-\.%]|$)", $regex); |
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// * symbol |
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$regex = str_replace("*", ".*", $regex); |
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// | in the end means the end of the address |
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if (Str::endsWith($regex, '|')) { |
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$regex = mb_substr($regex, 0, mb_strlen($regex) - 1) . '$'; |
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} |
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// || in the beginning means beginning of the domain name |
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if (Str::startsWith($regex, '||')) { |
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if (mb_strlen($regex) > 2) { |
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// http://tools.ietf.org/html/rfc3986#appendix-B |
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$regex = "^([^:\/?#]+:)?(\/\/([^\/?#]*\.)?)?" . mb_substr($regex, 2); |
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} |
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// | in the beginning means start of the address |
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} elseif (Str::startsWith($regex, '|')) { |
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$regex = '^' . mb_substr($regex, 1); |
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} |
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// other | symbols should be escaped |
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$regex = preg_replace("/\|(?![\$])/", "\|$1", $regex); |
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$this->regex = $regex; |
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} |
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} |
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limonte /
php-adblock-parser
