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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch\Search; |
| 4 | |
| 5 | use CirrusSearch\InterwikiResolver; |
| 6 | use CirrusSearch\Util; |
| 7 | use MediaWiki\MediaWikiServices; |
| 8 | use MediaWiki\Parser\Sanitizer; |
| 9 | use MediaWiki\Title\Title; |
| 10 | use MediaWiki\WikiMap\WikiMap; |
| 11 | |
| 12 | /** |
| 13 | * Utility class build MW Title from elastica Result/ResultSet classes |
| 14 | * This class can be used in all classes that need to build a Title |
| 15 | * by reading the elasticsearch output. |
| 16 | */ |
| 17 | class TitleHelper { |
| 18 | /** |
| 19 | * @var string |
| 20 | */ |
| 21 | private $hostWikiID; |
| 22 | |
| 23 | /** |
| 24 | * @var InterwikiResolver |
| 25 | */ |
| 26 | private $interwikiResolver; |
| 27 | |
| 28 | /** |
| 29 | * @var callable accepts a string and returns a string |
| 30 | */ |
| 31 | private $linkSanitizer; |
| 32 | |
| 33 | /** |
| 34 | * @param string|null $hostWikiID |
| 35 | * @param InterwikiResolver|null $interwikiResolver |
| 36 | * @param callable|null $linkSanitizer |
| 37 | */ |
| 38 | public function __construct( $hostWikiID = null, ?InterwikiResolver $interwikiResolver = null, ?callable $linkSanitizer = null ) { |
| 39 | $this->hostWikiID = $hostWikiID ?: WikiMap::getCurrentWikiId(); |
| 40 | $this->interwikiResolver = $interwikiResolver ?? MediaWikiServices::getInstance()->getService( InterwikiResolver::SERVICE ); |
| 41 | $this->linkSanitizer = $linkSanitizer ?? Sanitizer::escapeIdForLink( ... ); |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * Create a title. When making interwiki titles we should be providing the |
| 46 | * namespace text as a portion of the text, rather than a namespace id, |
| 47 | * because namespace id's are not consistent across wiki's. This |
| 48 | * additionally prevents the local wiki from localizing the namespace text |
| 49 | * when it should be using the localized name of the remote wiki. |
| 50 | * |
| 51 | * @param \Elastica\Result $r int $namespace |
| 52 | * @return Title |
| 53 | */ |
| 54 | public function makeTitle( \Elastica\Result $r ): Title { |
| 55 | $iwPrefix = $this->identifyInterwikiPrefix( $r ); |
| 56 | $titleFactory = MediaWikiServices::getInstance()->getTitleFactory(); |
| 57 | if ( $iwPrefix === null && $r->namespace !== null && $r->title !== null ) { |
| 58 | return $titleFactory->makeTitle( $r->namespace, $r->title ); |
| 59 | } |
| 60 | |
| 61 | $nsPrefix = $r->namespace_text ? $r->namespace_text . ':' : ''; |
| 62 | return $titleFactory->makeTitle( 0, $nsPrefix . $r->title, '', $iwPrefix ?? '' ); |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Build a Title to a redirect, this always works for internal titles. |
| 67 | * For external titles we need to use the namespace_text which is only |
| 68 | * valid if the redirect namespace is equals to the target title namespace. |
| 69 | * If the namespaces do not match we return null. |
| 70 | * |
| 71 | * @param \Elastica\Result $r |
| 72 | * @param string $redirectText |
| 73 | * @param int $redirNamespace |
| 74 | * @return Title|null the Title to the Redirect or null if we can't build it |
| 75 | */ |
| 76 | public function makeRedirectTitle( \Elastica\Result $r, $redirectText, $redirNamespace ) { |
| 77 | $iwPrefix = self::identifyInterwikiPrefix( $r ); |
| 78 | if ( $iwPrefix === null ) { |
| 79 | return Title::makeTitle( $redirNamespace, $redirectText ); |
| 80 | } |
| 81 | if ( $redirNamespace === $r->namespace ) { |
| 82 | $nsPrefix = $r->namespace_text ? $r->namespace_text . ':' : ''; |
| 83 | return Title::makeTitle( |
| 84 | 0, |
| 85 | $nsPrefix . $redirectText, |
| 86 | '', |
| 87 | $iwPrefix |
| 88 | ); |
| 89 | } else { |
| 90 | // redir namespace does not match, we can't |
| 91 | // build this title. |
| 92 | // The caller should fallback to the target title. |
| 93 | return null; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * @param \Elastica\Result $r |
| 99 | * @return bool true if this result refers to an external Title |
| 100 | */ |
| 101 | public function isExternal( \Elastica\Result $r ) { |
| 102 | if ( isset( $r->wiki ) && $r->wiki !== $this->hostWikiID ) { |
| 103 | return true; |
| 104 | } |
| 105 | // no wiki is suspicious, should we log a warning? |
| 106 | return false; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * @param \Elastica\Result $r |
| 111 | * @return string|null the interwiki prefix for this result or null or |
| 112 | * empty if local. |
| 113 | */ |
| 114 | private function identifyInterwikiPrefix( $r ) { |
| 115 | if ( isset( $r->wiki ) && $r->wiki !== $this->hostWikiID ) { |
| 116 | return $this->interwikiResolver->getInterwikiPrefix( $r->wiki ); |
| 117 | } |
| 118 | // no wiki is suspicious, should we log something? |
| 119 | return null; |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * @param string $id |
| 124 | * @return string |
| 125 | */ |
| 126 | public function sanitizeSectionFragment( $id ) { |
| 127 | return ( $this->linkSanitizer )( $id ); |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * @param Title $title |
| 132 | * @return string |
| 133 | */ |
| 134 | public function getNamespaceText( Title $title ) { |
| 135 | return Util::getNamespaceText( $title ); |
| 136 | } |
| 137 | } |