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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
*/
/**
* Handles searching prefixes of user names
*
* @since 1.27
*/
class UserNamePrefixSearch {
/**
* Do a prefix search of user names and return a list of matching user names.
*
* @param string|User $audience The string 'public' or a user object to show the search for
* @param string $search
* @param int $limit
* @param int $offset How many results to offset from the beginning
* @return array Array of strings
*/
public static function search( $audience, $search, $limit, $offset = 0 ) {
$user = User::newFromName( $search );
$dbr = wfGetDB( DB_REPLICA );
$prefix = $user ? $user->getName() : '';
$tables = [ 'user' ];
$cond = [ 'user_name ' . $dbr->buildLike( $prefix, $dbr->anyString() ) ];
$joinConds = [];
// Filter out hidden user names
if ( $audience === 'public' || !$audience->isAllowed( 'hideuser' ) ) {
$tables[] = 'ipblocks';
$cond['ipb_deleted'] = [ 0, null ];
$joinConds['ipblocks'] = [ 'LEFT JOIN', 'user_id=ipb_user' ];
}
$res = $dbr->selectFieldValues(
$tables,
'user_name',
$cond,
__METHOD__,
[
'LIMIT' => $limit,
'ORDER BY' => 'user_name',
'OFFSET' => $offset
],
$joinConds
);
return $res === false ? [] : $res;
}
}
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