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| 1 | <?php |
| 2 | |
| 3 | namespace Flow\Import\Wikitext; |
| 4 | |
| 5 | use ArrayIterator; |
| 6 | use Flow\Import\IImportSource; |
| 7 | use Flow\Import\ImportException; |
| 8 | use Flow\Import\Plain\ImportHeader; |
| 9 | use Flow\Import\Plain\ObjectRevision; |
| 10 | use Flow\Import\TemplateHelper; |
| 11 | use MediaWiki\Content\WikitextContent; |
| 12 | use MediaWiki\MediaWikiServices; |
| 13 | use MediaWiki\Parser\Parser; |
| 14 | use MediaWiki\Parser\ParserOptions; |
| 15 | use MediaWiki\Revision\SlotRecord; |
| 16 | use MediaWiki\StubObject\StubObject; |
| 17 | use MediaWiki\Title\Title; |
| 18 | use MediaWiki\User\User; |
| 19 | use MediaWiki\Utils\MWTimestamp; |
| 20 | use Wikimedia\Rdbms\IDBAccessObject; |
| 21 | |
| 22 | /** |
| 23 | * Imports the header of a wikitext talk page. Does not attempt to |
| 24 | * parse out and return individual topics. See the wikitext |
| 25 | * ConversionStrategy for more details. |
| 26 | */ |
| 27 | class ImportSource implements IImportSource { |
| 28 | /** @var User User doing the conversion actions (e.g. initial description, wikitext |
| 29 | * archive edit). However, actions will be attributed to the original user if |
| 30 | * applicable. |
| 31 | */ |
| 32 | protected $user; |
| 33 | |
| 34 | /** |
| 35 | * @var Title |
| 36 | */ |
| 37 | private $title; |
| 38 | |
| 39 | /** |
| 40 | * @var Parser|StubObject |
| 41 | */ |
| 42 | private $parser; |
| 43 | |
| 44 | /** |
| 45 | * @var string|null |
| 46 | */ |
| 47 | private $headerSuffix; |
| 48 | |
| 49 | /** |
| 50 | * @param Title $title |
| 51 | * @param Parser|StubObject $parser |
| 52 | * @param User $user User to take actions as |
| 53 | * @param string|null $headerSuffix |
| 54 | * @throws ImportException When $title is an external title |
| 55 | */ |
| 56 | public function __construct( Title $title, $parser, User $user, $headerSuffix = null ) { |
| 57 | if ( $title->isExternal() ) { |
| 58 | throw new ImportException( "Invalid non-local title: $title" ); |
| 59 | } |
| 60 | $this->title = $title; |
| 61 | $this->parser = $parser; |
| 62 | $this->user = $user; |
| 63 | $this->headerSuffix = $headerSuffix; |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Converts the existing wikitext talk page into a flow board header. |
| 68 | * If sections exist the header only receives the content up to the |
| 69 | * first section. Appends a template to the output indicating conversion |
| 70 | * occurred parameterized with the page the source lives at and the date |
| 71 | * of conversion in GMT. |
| 72 | * |
| 73 | * @return ImportHeader |
| 74 | * @throws ImportException When source header revision can not be loaded |
| 75 | */ |
| 76 | public function getHeader() { |
| 77 | $revision = MediaWikiServices::getInstance() |
| 78 | ->getRevisionLookup() |
| 79 | ->getRevisionByTitle( $this->title, 0, IDBAccessObject::READ_LATEST ); |
| 80 | if ( !$revision ) { |
| 81 | throw new ImportException( "Failed to load revision for title: {$this->title->getPrefixedText()}" ); |
| 82 | } |
| 83 | |
| 84 | $content = $revision->getContent( SlotRecord::MAIN ); |
| 85 | |
| 86 | // Verify we're operating on wikitext here. This should always be the case for talk pages. |
| 87 | if ( !( $content instanceof WikitextContent ) ) { |
| 88 | $revId = $revision->getId(); |
| 89 | $model = $content->getModel(); |
| 90 | throw new ImportException( |
| 91 | "The main slot for revision $revId has non-wikitext content model $model" |
| 92 | ); |
| 93 | } |
| 94 | |
| 95 | // If sections exist only take the content from the top of the page |
| 96 | // to the first section. |
| 97 | $nativeContent = $content->getText(); |
| 98 | $output = $this->parser->parse( |
| 99 | $nativeContent, |
| 100 | $this->title, |
| 101 | new ParserOptions( $this->user ) |
| 102 | ); |
| 103 | $sections = $output->getSections(); |
| 104 | if ( $sections ) { |
| 105 | # T319141: `byteoffset` is actually a *codepoint* offset. |
| 106 | $nativeContent = mb_substr( $nativeContent, 0, $sections[0]['byteoffset'] ); |
| 107 | } |
| 108 | |
| 109 | $content = TemplateHelper::extractTemplates( $nativeContent, $this->title ); |
| 110 | |
| 111 | $template = wfMessage( 'flow-importer-wt-converted-template' )->inContentLanguage()->plain(); |
| 112 | $arguments = implode( '|', [ |
| 113 | 'archive=' . $this->title->getPrefixedText(), |
| 114 | 'date=' . MWTimestamp::getInstance()->timestamp->format( 'Y-m-d' ), |
| 115 | ] ); |
| 116 | $content .= "\n\n{{{$template}|$arguments}}"; |
| 117 | |
| 118 | if ( $this->headerSuffix ) { |
| 119 | $content .= "\n\n{$this->headerSuffix}"; |
| 120 | } |
| 121 | |
| 122 | return new ImportHeader( |
| 123 | [ new ObjectRevision( |
| 124 | $content, |
| 125 | wfTimestampNow(), |
| 126 | $this->user->getName(), |
| 127 | "wikitext-import:header-revision:{$revision->getId()}" |
| 128 | ) ], |
| 129 | "wikitext-import:header:{$this->title->getPrefixedText()}" |
| 130 | ); |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * @inheritDoc |
| 135 | */ |
| 136 | public function getTopics() { |
| 137 | return new ArrayIterator( [] ); |
| 138 | } |
| 139 | } |