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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace MediaWiki\OutputTransform; |
| 5 | |
| 6 | use MediaWiki\Parser\ParserOptions; |
| 7 | use MediaWiki\Parser\ParserOutput; |
| 8 | |
| 9 | /** |
| 10 | * @unstable |
| 11 | */ |
| 12 | class OutputTransformPipeline { |
| 13 | |
| 14 | /** @var OutputTransformStage[] */ |
| 15 | private array $stages = []; |
| 16 | |
| 17 | public function addStage( OutputTransformStage $stage ): OutputTransformPipeline { |
| 18 | $this->stages[] = $stage; |
| 19 | return $this; |
| 20 | } |
| 21 | |
| 22 | /** |
| 23 | * Runs the pipeline on the ParserOutput, yielding a transformed ParserOutput. |
| 24 | * @param ParserOutput $in Parser output to which the transformations are |
| 25 | * applied. It is typically copied before applying transformations and is |
| 26 | * hence not mutated by this method, but if $options['allowClone'] is |
| 27 | * set it to false WILL be mutated! |
| 28 | * @param ParserOptions $popts - will eventually replace options as container |
| 29 | * for transformation options. |
| 30 | * @param array $options Transformations to apply to the HTML |
| 31 | * - allowClone: (bool) Whether to clone the ParserOutput before |
| 32 | * applying transformations. Default is true. |
| 33 | * - allowTOC: (bool) Show the TOC, assuming there were enough headings |
| 34 | * to generate one and `__NOTOC__` wasn't used. Default is true, |
| 35 | * but might be statefully overridden. |
| 36 | * - injectTOC: (bool) Replace the TOC_PLACEHOLDER with TOC contents; |
| 37 | * otherwise the marker will be left in the article (and the skin |
| 38 | * will be responsible for replacing or removing it). Default is |
| 39 | * true. |
| 40 | * - enableSectionEditLinks: (bool) Include section edit links, assuming |
| 41 | * section edit link tokens are present in the HTML. Default is true, |
| 42 | * but might be statefully overridden. |
| 43 | * - userLang: (Language) Unused since MW 1.46; use |
| 44 | * ParserOptions::getUserLangObj() instead. (deprecated) |
| 45 | * - skin: (Skin) Skin object used for transforming section edit links. |
| 46 | * - unwrap: (bool) Return text without a wrapper div. Default is false, |
| 47 | * meaning a wrapper div will be added if getWrapperDivClass() returns |
| 48 | * a non-empty string. |
| 49 | * - wrapperDivClass: (string) Wrap the output in a div and apply the given |
| 50 | * CSS class to that div. This overrides the output of getWrapperDivClass(). |
| 51 | * Setting this to an empty string has the same effect as 'unwrap' => true. |
| 52 | * - deduplicateStyles: (bool) When true, which is the default, `<style>` |
| 53 | * tags with the `data-mw-deduplicate` attribute set are deduplicated by |
| 54 | * value of the attribute: all but the first will be replaced by `<link |
| 55 | * rel="mw-deduplicated-inline-style" href="mw-data:..."/>` tags, where |
| 56 | * the scheme-specific-part of the href is the (percent-encoded) value |
| 57 | * of the `data-mw-deduplicate` attribute. |
| 58 | * - absoluteURLs: (bool) use absolute URLs in all links. Default: false |
| 59 | * - includeDebugInfo: (bool) render PP limit report in HTML. Default: false |
| 60 | */ |
| 61 | public function run( ParserOutput $in, ParserOptions $popts, array $options ): ParserOutput { |
| 62 | // Initialize some $options from the ParserOutput |
| 63 | $options += [ |
| 64 | 'wrapperDivClass' => $in->getWrapperDivClass(), |
| 65 | ]; |
| 66 | $oldWatcher = false; |
| 67 | if ( $options['allowClone'] ?? true ) { |
| 68 | $out = clone $in; |
| 69 | $oldWatcher = $popts->registerWatcher( $out->recordOption( ... ) ); |
| 70 | } else { |
| 71 | // T353257: This should be a clone, but we've need to suppress it |
| 72 | // for some legacy codepaths. |
| 73 | $out = $in; |
| 74 | } |
| 75 | |
| 76 | foreach ( $this->stages as $stage ) { |
| 77 | if ( $stage->shouldRun( $out, $popts, $options ) ) { |
| 78 | // Some stages may (for now) modify $options. See OutputTransformStage documentation for more info. |
| 79 | $out = $stage->transform( $out, $popts, $options ); |
| 80 | } |
| 81 | } |
| 82 | if ( $oldWatcher !== false ) { |
| 83 | $popts->registerWatcher( $oldWatcher ); |
| 84 | } |
| 85 | return $out; |
| 86 | } |
| 87 | } |