includes/collation/UppercaseCollation.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @since 1.16.3
  19  *
  20  * @file
  21  */
  22
  23 class UppercaseCollation extends Collation {
  24
  25         private $lang;
  26
  27         public function __construct() {
  28                 // Get a language object so that we can use the generic UTF-8 uppercase
  29                 // function there
  30                 $this->lang = Language::factory( 'en' );
  31         }
  32
  33         public function getSortKey( $string ) {
  34                 return $this->lang->uc( $string );
  35         }
  36
  37         public function getFirstLetter( $string ) {
  38                 if ( $string[0] == "\0" ) {
  39                         $string = substr( $string, 1 );
  40                 }
  41                 return $this->lang->ucfirst( $this->lang->firstChar( $string ) );
  42         }
  43
  44 }