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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\SubpageSortkey; |
| 4 | |
| 5 | use MediaWiki\Hook\GetDefaultSortkeyHook; |
| 6 | use MediaWiki\MediaWikiServices; |
| 7 | use MediaWiki\Title\Title; |
| 8 | |
| 9 | class SubpageSortkey implements GetDefaultSortkeyHook { |
| 10 | /** |
| 11 | * The GetDefaultSortkey hook. |
| 12 | * Basically prefixes the normal sortkey with some of the subpage |
| 13 | * parts of the current title. |
| 14 | * |
| 15 | * Example, if configured with "1,3..5,7" and given the |
| 16 | * page 0/1/2/3/4/5/6/7/8 it would prefix the sortkey with |
| 17 | * 1/3/4/5/7. Adding it to the normal sortkey, |
| 18 | * resulting in "0/1/3/4/5/7\n0/1/2/3/4/5/6/7/8". |
| 19 | * From there it might be further prefixed with whatever the |
| 20 | * {{DEFAULTSORT for a page is. |
| 21 | * |
| 22 | * Another example: Configuration -3..-1 turns 1/2/3/4/5 -> 3/4 |
| 23 | * and -3.. turns 1/2/3/4/5 -> 3/4/5 |
| 24 | * @param Title $title |
| 25 | * @param string &$unprefixed |
| 26 | */ |
| 27 | public function onGetDefaultSortkey( $title, &$unprefixed ) { |
| 28 | global $wgSubpageSortkeyDefault, |
| 29 | $wgSubpageSortkeyByNamespace, |
| 30 | $wgSubpageSortkeyIfNoSubpageUseFullName; |
| 31 | |
| 32 | $newSortkey = []; |
| 33 | |
| 34 | $ns = $title->getNamespace(); |
| 35 | if ( !MediaWikiServices::getInstance()->getNamespaceInfo()->hasSubpages( $ns ) ) { |
| 36 | // Do nothing |
| 37 | return; |
| 38 | } |
| 39 | |
| 40 | if ( isset( $wgSubpageSortkeyByNamespace[$ns] ) ) { |
| 41 | $descript = $wgSubpageSortkeyByNamespace[$ns]; |
| 42 | } else { |
| 43 | $descript = $wgSubpageSortkeyDefault; |
| 44 | } |
| 45 | |
| 46 | $elms = explode( ',', $descript ); |
| 47 | foreach ( $elms as $item ) { |
| 48 | $ranges = explode( '..', $item, 2 ); |
| 49 | $start = intval( $ranges[0] ); |
| 50 | if ( count( $ranges ) === 1 ) { |
| 51 | $count = 1; |
| 52 | } elseif ( $ranges[1] === '' ) { |
| 53 | $count = false; |
| 54 | } else { |
| 55 | $count = intval( $ranges[1] ); |
| 56 | } |
| 57 | $newSortkey = array_merge( $newSortkey, |
| 58 | self::getSubpage( $start, $count, $title ) ); |
| 59 | } |
| 60 | $newPrefix = implode( '/', $newSortkey ); |
| 61 | |
| 62 | // Don't prefix an extra \n if the prefix is empty. |
| 63 | if ( $newPrefix !== '' |
| 64 | || !$wgSubpageSortkeyIfNoSubpageUseFullName |
| 65 | ) { |
| 66 | $unprefixed = $newPrefix . "\n" . $unprefixed; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * @param int $index starting index of subpage. |
| 72 | * @param int $count how many elements, or false to denote all |
| 73 | * @param Title $title |
| 74 | * @return string[] array of subpages |
| 75 | */ |
| 76 | private static function getSubpage( $index, $count, $title ) { |
| 77 | $subpages = explode( '/', $title->getText() ); |
| 78 | $numb = count( $subpages ); |
| 79 | |
| 80 | if ( $index > $numb ) { |
| 81 | return []; |
| 82 | } |
| 83 | |
| 84 | if ( $count === false || $index + $count > $numb + 1 ) { |
| 85 | $count = $numb + 1 - $index; |
| 86 | } |
| 87 | return array_slice( $subpages, $index, $count ); |
| 88 | } |
| 89 | } |