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1<?php
2/**
3 * @license GPL-2.0-or-later
4 * @file
5 */
6
7namespace MediaWiki\Specials;
8
9use MediaWiki\Languages\LanguageConverterFactory;
10use MediaWiki\Page\LinkBatchFactory;
11use MediaWiki\Skin\Skin;
12use MediaWiki\Title\NamespaceInfo;
13use MediaWiki\Title\Title;
14use stdClass;
15use Wikimedia\Rdbms\IConnectionProvider;
16
17/**
18 * List of uncategorized category pages.
19 *
20 * @ingroup SpecialPage
21 */
22class SpecialUncategorizedCategories extends SpecialUncategorizedPages {
23    /**
24     * Holds a list of categories, which shouldn't be listed on this special page,
25     * even if it is uncategorized.
26     * @var array
27     */
28    private $exceptionList = null;
29
30    public function __construct(
31        NamespaceInfo $namespaceInfo,
32        IConnectionProvider $dbProvider,
33        LinkBatchFactory $linkBatchFactory,
34        LanguageConverterFactory $languageConverterFactory
35    ) {
36        parent::__construct(
37            $namespaceInfo,
38            $dbProvider,
39            $linkBatchFactory,
40            $languageConverterFactory
41        );
42        $this->mName = 'Uncategorizedcategories';
43        $this->requestedNamespace = NS_CATEGORY;
44    }
45
46    /**
47     * Returns an array of category titles (usually without the namespace), which
48     * shouldn't be listed on this page, even if they're uncategorized.
49     *
50     * @return array
51     */
52    private function getExceptionList() {
53        if ( $this->exceptionList === null ) {
54            $this->exceptionList = [];
55            $exList = $this->msg( 'uncategorized-categories-exceptionlist' )
56                ->inContentLanguage()->plain();
57            $proposedTitles = explode( "\n", $exList );
58            foreach ( $proposedTitles as $titleStr ) {
59                if ( !str_starts_with( $titleStr, '*' ) ) {
60                    continue;
61                }
62                $titleStr = preg_replace( "/^\\*\\s*/", '', $titleStr );
63                $title = Title::newFromText( $titleStr, NS_CATEGORY );
64                if ( $title && $title->getNamespace() !== NS_CATEGORY ) {
65                    $title = Title::makeTitleSafe( NS_CATEGORY, $titleStr );
66                }
67                if ( $title ) {
68                    $this->exceptionList[] = $title->getDBkey();
69                }
70            }
71        }
72        return $this->exceptionList;
73    }
74
75    /** @inheritDoc */
76    public function getQueryInfo() {
77        $query = parent::getQueryInfo();
78        $exceptionList = $this->getExceptionList();
79        if ( $exceptionList ) {
80            $dbr = $this->getDatabaseProvider()->getReplicaDatabase();
81            $query['conds'][] = $dbr->expr( 'page_title', '!=', $exceptionList );
82        }
83
84        return $query;
85    }
86
87    /**
88     * Formats the result
89     * @param Skin $skin The current skin
90     * @param stdClass $result The query result
91     * @return string The category link
92     */
93    public function formatResult( $skin, $result ) {
94        $title = Title::makeTitle( NS_CATEGORY, $result->title );
95        $text = $title->getText();
96
97        return $this->getLinkRenderer()->makeKnownLink( $title, $text );
98    }
99}
100
101/**
102 * Retain the old class name for backwards compatibility.
103 * @deprecated since 1.41
104 */
105class_alias( SpecialUncategorizedCategories::class, 'SpecialUncategorizedCategories' );