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PageBundleParserOutputConverter.php
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PageBundleParserOutputConverter.php
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<?php
namespace MediaWiki\Parser\Parsoid;
use MediaWiki\Language\LanguageCode;
use MediaWiki\Parser\ParserOutput;
use Wikimedia\Parsoid\Core\PageBundle;
/**
* Provides methods for conversion between PageBundle and ParserOutput
* TODO: Convert to a trait once we drop support for PHP < 8.2 since
* support for constants in traits was added in PHP 8.2
* @since 1.40
* @internal
*/
final class PageBundleParserOutputConverter {
/**
* @var string Key used to store parsoid page bundle data in ParserOutput
*/
public const PARSOID_PAGE_BUNDLE_KEY = 'parsoid-page-bundle';
/**
* We do not want instances of this class to be created
* @return void
*/
private function __construct() {
}
/**
* Creates a ParserOutput object containing the relevant data from
* the given PageBundle object.
*
* We need to inject data-parsoid and other properties into the
* parser output object for caching, so we can use it for VE edits
* and transformations.
*
* @param PageBundle $pageBundle
* @param ?ParserOutput $originalParserOutput Any non-parsoid metadata
* from $originalParserOutput will be copied into the new ParserOutput object.
*
* @return ParserOutput
*/
public static function parserOutputFromPageBundle(
PageBundle $pageBundle, ?ParserOutput $originalParserOutput = null
): ParserOutput {
$parserOutput = new ParserOutput( $pageBundle->html );
if ( $originalParserOutput ) {
$parserOutput->mergeHtmlMetaDataFrom( $originalParserOutput );
$parserOutput->mergeTrackingMetaDataFrom( $originalParserOutput );
$parserOutput->mergeInternalMetaDataFrom( $originalParserOutput );
}
self::applyPageBundleDataToParserOutput( $pageBundle, $parserOutput );
return $parserOutput;
}
/**
* Given an existing ParserOutput and a PageBundle, applies the PageBundle data to the ParserOutput.
* NOTE: it does NOT apply the text of said pageBundle - this should be done by the calling method, if desired.
* This way, we can modify a ParserOutput's associated bundle without creating a new ParserOutput,
* which makes it easier to deal with in the OutputTransformPipeline.
* @param PageBundle|\stdClass $pageBundle
* @param ParserOutput $parserOutput
* @internal
*/
public static function applyPageBundleDataToParserOutput(
$pageBundle, ParserOutput $parserOutput
): void {
// Overwriting ExtensionData was deprecated in 1.38 but it's safe inside an OutputTransform pipeline,
// which is the only place where this should happen right now.
$parserOutput->setExtensionData(
self::PARSOID_PAGE_BUNDLE_KEY,
[
'parsoid' => $pageBundle->parsoid ?? null,
'mw' => $pageBundle->mw ?? null,
'version' => $pageBundle->version ?? null,
'headers' => $pageBundle->headers ?? null,
'contentmodel' => $pageBundle->contentmodel ?? null,
]
);
if ( isset( $pageBundle->headers['content-language'] ) ) {
$lang = LanguageCode::normalizeNonstandardCodeAndWarn(
// @phan-suppress-next-line PhanTypeArraySuspiciousNullable
$pageBundle->headers['content-language']
);
$parserOutput->setLanguage( $lang );
}
}
/**
* Returns a Parsoid PageBundle equivalent to the given ParserOutput.
*
* @param ParserOutput $parserOutput
*
* @return PageBundle
*/
public static function pageBundleFromParserOutput( ParserOutput $parserOutput ): PageBundle {
$pageBundleData = $parserOutput->getExtensionData( self::PARSOID_PAGE_BUNDLE_KEY );
$lang = $parserOutput->getLanguage();
$headers = $pageBundleData['headers'] ?? [];
if ( $lang ) {
$headers['content-language'] = $lang->toBcp47Code();
}
return new PageBundle(
$parserOutput->getRawText(),
$pageBundleData['parsoid'] ?? [],
$pageBundleData['mw'] ?? [],
// It would be nice to have this be "null", but PageBundle::responseData()
// chocks on that: T325137.
$pageBundleData['version'] ?? '0.0.0',
$pageBundleData['headers'] ?? $headers,
$pageBundleData['contentmodel'] ?? null
);
}
public static function hasPageBundle( ParserOutput $parserOutput ) {
return $parserOutput->getExtensionData( self::PARSOID_PAGE_BUNDLE_KEY ) !== null;
}
}

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PageBundleParserOutputConverter.php (4 KB)

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