streams.class.php

   1 <?php
   2
   3 /**
   4  * Copyright (c) 2003 Danilo Segan <danilo@kvota.net>.
   5  *
   6  * This file is part of PHP-gettext.
   7  *
   8  * PHP-gettext is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * PHP-gettext is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with PHP-gettext; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  21  * MA  02110-1301, USA
  22  *
  23  * @copyright &copy; 2004-2009 The SquirrelMail Project Team
  24  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
  25  * @version $Id$
  26  * @package squirrelmail
  27  * @subpackage i18n
  28  */
  29
  30 /**
  31  * Class that is used to read .mo files.
  32  * @package squirrelmail
  33  * @subpackage i18n
  34  */
  35 class FileReader {
  36     /**
  37      * Current position in file
  38      * @var integer
  39      */
  40     var $_pos;
  41     /**
  42      * File descriptor
  43      * @var resource
  44      */
  45     var $_fd;
  46     /**
  47      * File size
  48      * @var integer
  49      */
  50     var $_length;
  51     /**
  52      * contains error codes
  53      *
  54      * 2 = File doesn't exist
  55      * 3 = Can't read file
  56      * @var integer
  57      */
  58     var $error=0;
  59
  60     /**
  61      * reads translation file and fills translation input object properties
  62      * @param string $filename path to file
  63      * @return boolean false there is a problem with $filename
  64      */
  65     function FileReader($filename) {
  66         // disable stat warnings for unreadable directories
  67         if (@file_exists($filename)) {
  68
  69             $this->_length=filesize($filename);
  70             $this->_pos = 0;
  71             $this->_fd = fopen($filename,'rb');
  72             if (!$this->_fd) {
  73                 $this->error = 3; // Cannot read file, probably permissions
  74                 return false;
  75             }
  76         } else {
  77             $this->error = 2; // File doesn't exist
  78             return false;
  79         }
  80     }
  81
  82     /**
  83      * reads data from current position
  84      * @param integer $bytes number of bytes to read
  85      * @return string read data
  86      */
  87     function read($bytes) {
  88         fseek($this->_fd, $this->_pos);
  89         $data = fread($this->_fd, $bytes);
  90         $this->_pos = ftell($this->_fd);
  91
  92         return $data;
  93     }
  94
  95     /**
  96      * Moves to defined position in a file
  97      * @param integer $pos position
  98      * @return integer current position
  99      */
 100     function seekto($pos) {
 101         fseek($this->_fd, $pos);
 102         $this->_pos = ftell($this->_fd);
 103         return $this->_pos;
 104     }
 105
 106     /**
 107      * return current position
 108      * @return integer current position
 109      */
 110     function currentpos() {
 111         return $this->_pos;
 112     }
 113
 114     /**
 115      * return file length
 116      * @return integer file length
 117      */
 118     function length() {
 119         return $this->_length;
 120     }
 121
 122     /**
 123      * close translation file
 124      */
 125     function close() {
 126         fclose($this->_fd);
 127     }
 128 }