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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::class, '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 | } |