Reader.class.php

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00001 <?php
00002 /***************************************************************************
00003  *   Copyright (C) 2007 by Dmitry A. Lomash                                *
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 
00015     abstract class Reader
00016     {
00017         const BLOCK_SIZE = 16384;
00018         
00019         abstract public function close();
00020         abstract public function read($count);
00021         
00022         public function isEof()
00023         {
00024             return false;
00025         }
00026         
00027         public function mark()
00028         {
00029             throw new IOException('mark() not supported');
00030         }
00031         
00032         public function markSupported()
00033         {
00034             return false;
00035         }
00036         
00037         public function reset()
00038         {
00039             throw new IOException('reset() not supported');
00040         }
00041         
00042         public function skip($count)
00043         {
00044             return mb_strlen($this->read($count));
00045         }
00046         
00047         public function available()
00048         {
00049             return 0;
00050         }
00051         
00052         public function getWhole()
00053         {
00054             while (!$this->isEof())
00055                 $result .= $this->read(self::BLOCK_SIZE);   
00056             
00057             return $result;
00058         }
00059     }
00060 ?>