$allSearchTerms = array( $searchterm );
if ( $wgContLang->hasVariants() ) {
- $allSearchTerms = array_merge(
+ $allSearchTerms = array_unique( array_merge(
$allSearchTerms,
$wgContLang->autoConvertToAllVariants( $searchterm )
- );
+ ) );
}
$titleResult = null;
* @param int[]|null $namespaces
*/
function setNamespaces( $namespaces ) {
+ if ( $namespaces ) {
+ // Filter namespaces to only keep valid ones
+ $validNs = $this->searchableNamespaces();
+ $namespaces = array_filter( $namespaces, function( $ns ) use( $validNs ) {
+ return $ns < 0 || isset( $validNs[$ns] );
+ } );
+ } else {
+ $namespaces = array();
+ }
$this->namespaces = $namespaces;
}
public function textAlreadyUpdatedForIndex() {
return false;
}
+
+ /**
+ * Makes search simple string if it was namespaced.
+ * Sets namespaces of the search to namespaces extracted from string.
+ * @param string $search
+ * @return $string Simplified search string
+ */
+ protected function normalizeNamespaces( $search ) {
+ // Find a Title which is not an interwiki and is in NS_MAIN
+ $title = Title::newFromText( $search );
+ $ns = $this->namespaces;
+ if ( $title && !$title->isExternal() ) {
+ $ns = array( $title->getNamespace() );
+ $search = $title->getText();
+ if ( $ns[0] == NS_MAIN ) {
+ $ns = $this->namespaces; // no explicit prefix, use default namespaces
+ Hooks::run( 'PrefixSearchExtractNamespace', array( &$ns, &$search ) );
+ }
+ } else {
+ $title = Title::newFromText( $search . 'Dummy' );
+ if ( $title && $title->getText() == 'Dummy'
+ && $title->getNamespace() != NS_MAIN
+ && !$title->isExternal() )
+ {
+ $ns = array( $title->getNamespace() );
+ $search = '';
+ } else {
+ Hooks::run( 'PrefixSearchExtractNamespace', array( &$ns, &$search ) );
+ }
+ }
+
+ $ns = array_map( function( $space ) {
+ return $space == NS_MEDIA ? NS_FILE : $space;
+ }, $ns );
+
+ $this->setNamespaces( $ns );
+ return $search;
+ }
+
+ /**
+ * Perform a completion search.
+ * Does not resolve namespaces and does not check variants.
+ * Search engine implementations may want to override this function.
+ * @param string $search
+ * @return SearchSuggestionSet
+ */
+ protected function completionSearchBackend( $search ) {
+ $results = array();
+
+ $search = trim( $search );
+
+ if ( !in_array( NS_SPECIAL, $this->namespaces ) && // We do not run hook on Special: search
+ !Hooks::run( 'PrefixSearchBackend',
+ array( $this->namespaces, $search, $this->limit, &$results, $this->offset )
+ ) ) {
+ // False means hook worked.
+ // FIXME: Yes, the API is weird. That's why it is going to be deprecated.
+
+ return SearchSuggestionSet::fromStrings( $results );
+ } else {
+ // Hook did not do the job, use default simple search
+ $results = $this->simplePrefixSearch( $search );
+ return SearchSuggestionSet::fromTitles( $results );
+ }
+ }
+
+ /**
+ * Perform a completion search.
+ * @param string $search
+ * @return SearchSuggestionSet
+ */
+ public function completionSearch( $search ) {
+ if ( trim( $search ) === '' ) {
+ return SearchSuggestionSet::emptySuggestionSet(); // Return empty result
+ }
+ $search = $this->normalizeNamespaces( $search );
+ return $this->processCompletionResults( $search, $this->completionSearchBackend( $search ) );
+ }
+
+ /**
+ * Perform a completion search with variants.
+ * @param string $search
+ * @return SearchSuggestionSet
+ */
+ public function completionSearchWithVariants( $search ) {
+ if ( trim( $search ) === '' ) {
+ return SearchSuggestionSet::emptySuggestionSet(); // Return empty result
+ }
+ $search = $this->normalizeNamespaces( $search );
+
+ $results = $this->completionSearchBackend( $search );
+ $fallbackLimit = $this->limit - $results->getSize();
+ if ( $fallbackLimit > 0 ) {
+ global $wgContLang;
+
+ $fallbackSearches = $wgContLang->autoConvertToAllVariants( $search );
+ $fallbackSearches = array_diff( array_unique( $fallbackSearches ), array( $search ) );
+
+ foreach ( $fallbackSearches as $fbs ) {
+ $this->setLimitOffset( $fallbackLimit );
+ $fallbackSearchResult = $this->completionSearch( $fbs );
+ $results->appendAll( $fallbackSearchResult );
+ $fallbackLimit -= count( $fallbackSearchResult );
+ if ( $fallbackLimit <= 0 ) {
+ break;
+ }
+ }
+ }
+ return $this->processCompletionResults( $search, $results );
+ }
+
+ /**
+ * Extract titles from completion results
+ * @param SearchSuggestionSet $completionResults
+ * @return Title[]
+ */
+ public function extractTitles( SearchSuggestionSet $completionResults ) {
+ return $completionResults->map( function( SearchSuggestion $sugg ) {
+ return $sugg->getSuggestedTitle();
+ } );
+ }
+
+ /**
+ * Process completion search results.
+ * Resolves the titles and rescores.
+ * @param SearchSuggestionSet $suggestions
+ * @return SearchSuggestionSet
+ */
+ protected function processCompletionResults( $search, SearchSuggestionSet $suggestions ) {
+ if ( $suggestions->getSize() == 0 ) {
+ // If we don't have anything, don't bother
+ return $suggestions;
+ }
+ $search = trim( $search );
+ // preload the titles with LinkBatch
+ $titles = $suggestions->map( function( SearchSuggestion $sugg ) {
+ return $sugg->getSuggestedTitle();
+ } );
+ $lb = new LinkBatch( $titles );
+ $lb->setCaller( __METHOD__ );
+ $lb->execute();
+
+ $results = $suggestions->map( function( SearchSuggestion $sugg ) {
+ return $sugg->getSuggestedTitle()->getPrefixedText();
+ } );
+
+ // Rescore results with an exact title match
+ $rescorer = new SearchExactMatchRescorer();
+ $rescoredResults = $rescorer->rescore( $search, $this->namespaces, $results, $this->limit );
+
+ if ( count( $rescoredResults ) > 0 ) {
+ $found = array_search( $rescoredResults[0], $results );
+ if ( $found === false ) {
+ // If the first result is not in the previous array it
+ // means that we found a new exact match
+ $exactMatch = SearchSuggestion::fromTitle( 0, Title::newFromText( $rescoredResults[0] ) );
+ $suggestions->prepend( $exactMatch );
+ $suggestions->shrink( $this->limit );
+ } else {
+ // if the first result is not the same we need to rescore
+ if ( $found > 0 ) {
+ $suggestions->rescore( $found );
+ }
+ }
+ }
+
+ return $suggestions;
+ }
+
+ /**
+ * Simple prefix search for subpages.
+ * @param string $search
+ * @return Title[]
+ */
+ public function defaultPrefixSearch( $search ) {
+ if ( trim( $search ) === '' ) {
+ return array();
+ }
+
+ $search = $this->normalizeNamespaces( $search );
+ return $this->simplePrefixSearch( $search );
+ }
+
+ /**
+ * Call out to simple search backend.
+ * Defaults to TitlePrefixSearch.
+ * @param string $search
+ * @return Title[]
+ */
+ protected function simplePrefixSearch( $search ) {
+ // Use default database prefix search
+ $backend = new TitlePrefixSearch;
+ return $backend->defaultSearchBackend( $this->namespaces, $search, $this->limit, $this->offset );
+ }
+
}
/**
dépôts / lhc / web / wiklou.git / blobdiff