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<?php /** * Prefix search of user names. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * http://www.gnu.org/copyleft/gpl.html * * @file */ namespace MediaWiki\User; use InvalidArgumentException; use MediaWiki\Block\HideUserUtils; use MediaWiki\Permissions\Authority; use Wikimedia\Rdbms\IConnectionProvider; use Wikimedia\Rdbms\IExpression; use Wikimedia\Rdbms\LikeValue; /** * Handles searching prefixes of user names * * @note There are two classes called UserNamePrefixSearch. You should use this first one, in * namespace MediaWiki\User, which is a service. \UserNamePrefixSearch is a deprecated static wrapper * that forwards to the global service. * * @since 1.36 as a service in the current namespace * @author DannyS712 */ class UserNamePrefixSearch { public const AUDIENCE_PUBLIC = 'public'; private IConnectionProvider $dbProvider; private UserNameUtils $userNameUtils; private HideUserUtils $hideUserUtils; /** * @param IConnectionProvider $dbProvider * @param UserNameUtils $userNameUtils * @param HideUserUtils $hideUserUtils */ public function __construct( IConnectionProvider $dbProvider, UserNameUtils $userNameUtils, HideUserUtils $hideUserUtils ) { $this->dbProvider = $dbProvider; $this->userNameUtils = $userNameUtils; $this->hideUserUtils = $hideUserUtils; } /** * Do a prefix search of user names and return a list of matching user names. * * @param string|Authority $audience Either AUDIENCE_PUBLIC or a user to * show the search for * @param string $search * @param int $limit * @param int $offset How many results to offset from the beginning * @return string[] * @throws InvalidArgumentException if $audience is invalid */ public function search( $audience, string $search, int $limit, int $offset = 0 ): array { if ( $audience !== self::AUDIENCE_PUBLIC && !( $audience instanceof Authority ) ) { throw new InvalidArgumentException( '$audience must be AUDIENCE_PUBLIC or an Authority object' ); } // Invalid user names are treated as empty strings $prefix = $this->userNameUtils->getCanonical( $search ) ?: ''; $dbr = $this->dbProvider->getReplicaDatabase(); $queryBuilder = $dbr->newSelectQueryBuilder() ->select( 'user_name' ) ->from( 'user' ) ->where( $dbr->expr( 'user_name', IExpression::LIKE, new LikeValue( $prefix, $dbr->anyString() ) ) ) ->orderBy( 'user_name' ) ->limit( $limit ) ->offset( $offset ); // Filter out hidden user names if ( $audience === self::AUDIENCE_PUBLIC || !$audience->isAllowed( 'hideuser' ) ) { $queryBuilder->andWhere( $this->hideUserUtils->getExpression( $dbr ) ); } return $queryBuilder->caller( __METHOD__ )->fetchFieldValues(); } }
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