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<?php |
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namespace WMDE\HamcrestHtml; |
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use Hamcrest\Description; |
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use Hamcrest\DiagnosingMatcher; |
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use Hamcrest\Matcher; |
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class HtmlMatcher extends DiagnosingMatcher { |
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/** |
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* @link http://www.xmlsoft.org/html/libxml-xmlerror.html#xmlParserErrors |
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* @link https://github.com/Chronic-Dev/libxml2/blob/683f296a905710ff285c28b8644ef3a3d8be9486/include/libxml/xmlerror.h#L257 |
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*/ |
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const XML_UNKNOWN_TAG_ERROR_CODE = 801; |
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/** |
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* @var Matcher |
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*/ |
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private $elementMatcher; |
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/** |
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* @param Matcher $elementMatcher |
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* |
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* @return self |
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*/ |
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public static function htmlPiece( Matcher $elementMatcher = null ) { |
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return new static( $elementMatcher ); |
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} |
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private function __construct( Matcher $elementMatcher = null ) { |
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$this->elementMatcher = $elementMatcher; |
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} |
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public function describeTo( Description $description ) { |
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$description->appendText( 'valid html piece ' ); |
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if ( $this->elementMatcher ) { |
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$description->appendDescriptionOf( $this->elementMatcher ); |
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} |
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} |
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/** |
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* @param string $html |
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* @param Description $mismatchDescription |
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* |
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* @return bool |
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*/ |
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protected function matchesWithDiagnosticDescription( $html, Description $mismatchDescription ) { |
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$internalErrors = libxml_use_internal_errors( true ); |
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libxml_clear_errors(); |
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$document = new \DOMDocument(); |
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$html = $this->escapeScriptTagContents( $html ); |
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// phpcs:ignore Generic.PHP.NoSilencedErrors |
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if ( !@$document->loadHTML( mb_convert_encoding( $html, 'HTML-ENTITIES', 'UTF-8' ) ) ) { |
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$mismatchDescription->appendText( 'there was some parsing error' ); |
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return false; |
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} |
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$errors = libxml_get_errors(); |
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libxml_clear_errors(); |
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libxml_use_internal_errors( $internalErrors ); |
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$result = true; |
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/** @var \LibXMLError $error */ |
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foreach ( $errors as $error ) { |
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if ( $this->isUnknownTagError( $error ) ) { |
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continue; |
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} |
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$mismatchDescription->appendText( 'there was parsing error: ' ) |
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->appendText( trim( $error->message ) ) |
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->appendText( ' on line ' ) |
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->appendText( $error->line ); |
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$result = false; |
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} |
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if ( !$result ) { |
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return false; |
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} |
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$mismatchDescription->appendText( 'valid html piece ' ); |
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if ( $this->elementMatcher ) { |
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$result = $this->elementMatcher->matches( $document ); |
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$this->elementMatcher->describeMismatch( $document, $mismatchDescription ); |
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} |
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$mismatchDescription->appendText( "\nActual html:\n" )->appendText( $html ); |
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return $result; |
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} |
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/** |
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* @param \LibXMLError $error |
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* |
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* @return bool |
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*/ |
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private function isUnknownTagError( \LibXMLError $error ) { |
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return $error->code === self::XML_UNKNOWN_TAG_ERROR_CODE; |
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} |
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/** |
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* @param string $html |
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* |
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* @return string HTML |
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*/ |
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private function escapeScriptTagContents( $html ) { |
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return preg_replace_callback( '#(<script.*>)(.*)(</script>)#isU', function ( $matches ) { |
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return $matches[1] . str_replace( '</', '<\/', $matches[2] ) . $matches[3]; |
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}, $html ); |
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} |
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} |
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wmde /
hamcrest-html-matchers
