CropFilter.class.php

Go to the documentation of this file.
00001 <?php
00002 /***************************************************************************
00003  *   Copyright (C) 2007 by Denis M. Gabaidulin                             *
00004  *                                                                         *
00005  *   This program is free software; you can redistribute it and/or modify  *
00006  *   it under the terms of the GNU Lesser General Public License as        *
00007  *   published by the Free Software Foundation; either version 3 of the    *
00008  *   License, or (at your option) any later version.                       *
00009  *                                                                         *
00010  ***************************************************************************/
00011 
00017     final class CropFilter implements Filtrator
00018     {
00019         private $start  = 0;
00020         private $length = 0;
00021         
00025         public static function create()
00026         {
00027             return new self;
00028         }
00029         
00033         public function setStart($start)
00034         {
00035             Assert::isPositiveInteger($start);
00036             
00037             $this->start = $start;
00038             
00039             return $this;
00040         }
00041         
00045         public function setLength($length)
00046         {
00047             Assert::isPositiveInteger($length);
00048             
00049             $this->length = $length;
00050             
00051             return $this;
00052         }
00053         
00054         public function apply($value)
00055         {
00056             return
00057                 $this->length
00058                     ? mb_strcut($value, $this->start, $this->length)
00059                     : mb_strcut($value, $this->start);
00060         }
00061     }
00062 ?>