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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch\Query; |
| 4 | |
| 5 | use CirrusSearch\CrossSearchStrategy; |
| 6 | use CirrusSearch\Parser\AST\KeywordFeatureNode; |
| 7 | use CirrusSearch\Query\Builder\QueryBuildingContext; |
| 8 | use CirrusSearch\Search\Filters; |
| 9 | use CirrusSearch\Search\SearchContext; |
| 10 | use CirrusSearch\WarningCollector; |
| 11 | use Elastica\Query; |
| 12 | use Elastica\Query\AbstractQuery; |
| 13 | use MediaWiki\Config\Config; |
| 14 | |
| 15 | /** |
| 16 | * File type features: |
| 17 | * filetype:bitmap |
| 18 | * Types can be OR'd together: |
| 19 | * filetype:bitmap|png |
| 20 | * Selects only files of these specified features. |
| 21 | */ |
| 22 | class FileTypeFeature extends SimpleKeywordFeature implements FilterQueryFeature { |
| 23 | public const MAX_CONDITIONS = 20; |
| 24 | |
| 25 | /** @var string[] Map of aliases from user provided term to term to search for */ |
| 26 | private $aliases; |
| 27 | |
| 28 | public function __construct( Config $config ) { |
| 29 | $this->aliases = $config->get( 'CirrusSearchFiletypeAliases' ); |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * @return string[] |
| 34 | */ |
| 35 | protected function getKeywords() { |
| 36 | return [ 'filetype' ]; |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * @param KeywordFeatureNode $node |
| 41 | * @return CrossSearchStrategy |
| 42 | */ |
| 43 | public function getCrossSearchStrategy( KeywordFeatureNode $node ) { |
| 44 | return CrossSearchStrategy::allWikisStrategy(); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * @param SearchContext $context |
| 49 | * @param string $key The keyword |
| 50 | * @param string $value The value attached to the keyword with quotes stripped |
| 51 | * @param string $quotedValue The original value in the search string, including quotes |
| 52 | * if used |
| 53 | * @param bool $negated Is the search negated? Not used to generate the returned |
| 54 | * AbstractQuery, that will be negated as necessary. Used for any other building/context |
| 55 | * necessary. |
| 56 | * @return array Two element array, first an AbstractQuery or null to apply to the |
| 57 | * query. Second a boolean indicating if the quotedValue should be kept in the search |
| 58 | * string. |
| 59 | */ |
| 60 | protected function doApply( SearchContext $context, $key, $value, $quotedValue, $negated ) { |
| 61 | $parsed = $this->parseValue( $key, $value, $quotedValue, '', '', $context ); |
| 62 | '@phan-var array $parsed'; |
| 63 | $query = $this->matchFileType( array_merge( $parsed['aliased'], $parsed['user_types'] ) ); |
| 64 | |
| 65 | return [ $query, false ]; |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * @param string $key |
| 70 | * @param string $value |
| 71 | * @param string $quotedValue |
| 72 | * @param string $valueDelimiter |
| 73 | * @param string $suffix |
| 74 | * @param WarningCollector $warningCollector |
| 75 | * @return array|false|null |
| 76 | */ |
| 77 | public function parseValue( $key, $value, $quotedValue, $valueDelimiter, $suffix, WarningCollector $warningCollector ) { |
| 78 | // TODO: The explode/count/warn is repeated elsewhere and should be generalized? |
| 79 | $types = explode( '|', $value ); |
| 80 | if ( count( $types ) > self::MAX_CONDITIONS ) { |
| 81 | $warningCollector->addWarning( |
| 82 | 'cirrussearch-feature-too-many-conditions', |
| 83 | $key, |
| 84 | self::MAX_CONDITIONS |
| 85 | ); |
| 86 | $types = array_slice( |
| 87 | $types, |
| 88 | 0, |
| 89 | self::MAX_CONDITIONS |
| 90 | ); |
| 91 | } |
| 92 | |
| 93 | $aliased = []; |
| 94 | foreach ( $types as $type ) { |
| 95 | $lcType = mb_strtolower( $type ); |
| 96 | if ( isset( $this->aliases[$lcType] ) ) { |
| 97 | $aliased[] = $this->aliases[$lcType]; |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | return [ |
| 102 | 'user_types' => $types, |
| 103 | 'aliased' => $aliased, |
| 104 | ]; |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * @param string[] $types |
| 109 | * @return Query\BoolQuery|Query\MatchQuery|null |
| 110 | */ |
| 111 | protected function matchFileType( $types ) { |
| 112 | $queries = []; |
| 113 | foreach ( $types as $type ) { |
| 114 | $queries[] = new Query\MatchQuery( 'file_media_type', [ 'query' => $type ] ); |
| 115 | } |
| 116 | |
| 117 | return Filters::booleanOr( $queries, false ); |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * @param KeywordFeatureNode $node |
| 122 | * @param QueryBuildingContext $context |
| 123 | * @return AbstractQuery|null |
| 124 | */ |
| 125 | public function getFilterQuery( KeywordFeatureNode $node, QueryBuildingContext $context ) { |
| 126 | $parsed = $node->getParsedValue(); |
| 127 | '@phan-var array $parsed'; |
| 128 | return $this->matchFileType( array_merge( $parsed['aliased'], $parsed['user_types'] ) ); |
| 129 | } |
| 130 | } |