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<?php |
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namespace Recca0120\LaravelTracy\Panels; |
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use DOMDocument; |
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use LibXMLError; |
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use Recca0120\LaravelTracy\Contracts\IAjaxPanel; |
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use Recca0120\LaravelTracy\Events\BeforeBarRender; |
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class HtmlValidatorPanel extends AbstractSubscriablePanel implements IAjaxPanel |
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{ |
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/** |
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* $html. |
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* |
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* @var string |
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*/ |
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protected $html; |
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/** |
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* $ignoreErrors. |
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* |
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* @var array |
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*/ |
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protected static $ignoreErrors = [ |
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// XML_ERR_ENTITYREF_SEMICOL_MISSING |
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23, |
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// XML_HTML_UNKNOWN_TAG |
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801, |
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]; |
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/** |
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* $severenity. |
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* |
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* @var array |
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*/ |
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protected static $severenity = [ |
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LIBXML_ERR_WARNING => 'Warning', |
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LIBXML_ERR_ERROR => 'Error', |
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LIBXML_ERR_FATAL => 'Fatal error', |
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]; |
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/** |
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* setHTML. |
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* |
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* @param string $html |
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* @return $this |
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*/ |
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public function setHtml($html) |
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{ |
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$this->html = $html; |
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return $this; |
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} |
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/** |
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* Removes special controls characters and normalizes line endings and spaces. |
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* |
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* @param string $str |
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* @return string |
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*/ |
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protected static function normalize($str) |
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{ |
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$str = static::normalizeNewLines($str); |
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// remove control characters; leave \t + \n |
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$str = preg_replace('#[\x00-\x08\x0B-\x1F\x7F-\x9F]+#u', '', $str); |
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// right trim |
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$str = preg_replace('#[\t ]+$#m', '', $str); |
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// leading and trailing blank lines |
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$str = trim($str, "\n"); |
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return $str; |
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} |
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/** |
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* Standardize line endings to unix-like. |
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* |
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* @param string $s |
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* @return string |
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*/ |
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protected static function normalizeNewLines($s) |
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{ |
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return str_replace(["\r\n", "\r"], "\n", $s); |
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} |
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/** |
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* getAttributes. |
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* |
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* @return array |
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*/ |
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protected function getAttributes() |
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{ |
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libxml_use_internal_errors(true); |
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$dom = new DOMDocument('1.0', 'UTF-8'); |
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$dom->resolveExternals = false; |
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$dom->validateOnParse = true; |
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$dom->preserveWhiteSpace = false; |
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$dom->strictErrorChecking = true; |
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$dom->recover = true; |
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@$dom->loadHTML($this->normalize($this->html)); |
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$errors = array_filter(libxml_get_errors(), function (LibXMLError $error) { |
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return in_array((int) $error->code, static::$ignoreErrors, true) === false; |
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}); |
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libxml_clear_errors(); |
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return [ |
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'severenity' => static::$severenity, |
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'counter' => count($errors), |
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'errors' => $errors, |
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'html' => $this->html, |
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]; |
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} |
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/** |
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* subscribe. |
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**/ |
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protected function subscribe() |
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{ |
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$events = $this->laravel['events']; |
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$events->listen(BeforeBarRender::class, function ($barRender) { |
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$this->setHtml($barRender->response->getContent()); |
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}); |
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} |
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} |
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recca0120 /
laravel-tracy
