class/l10n/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  * @copyright &copy; 2004-2006 The SquirrelMail Project Team
  23  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
  24  * @version $Id$
  25  * @package squirrelmail
  26  * @subpackage i18n
  27  */
  28
  29 /**
  30  * Class that is used to read .mo files.
  31  * @package squirrelmail
  32  * @subpackage i18n
  33  */
  34 class FileReader {
  35     /**
  36      * Current position in file
  37      * @var integer
  38      */
  39     var $_pos;
  40     /**
  41      * File descriptor
  42      * @var resource
  43      */
  44     var $_fd;
  45     /**
  46      * File size
  47      * @var integer
  48      */
  49     var $_length;
  50     /**
  51      * contains error codes
  52      *
  53      * 2 = File doesn't exist
  54      * 3 = Can't read file
  55      * @var integer
  56      */
  57     var $error=0;
  58
  59     /**
  60      * reads translation file and fills translation input object properties
  61      * @param string $filename path to file
  62      * @return boolean false there is a problem with $filename
  63      */
  64     function FileReader($filename) {
  65         // disable stat warnings for unreadable directories
  66         if (@file_exists($filename)) {
  67
  68             $this->_length=filesize($filename);
  69             $this->_pos = 0;
  70             $this->_fd = fopen($filename,'rb');
  71             if (!$this->_fd) {
  72                 $this->error = 3; // Cannot read file, probably permissions
  73                 return false;
  74             }
  75         } else {
  76             $this->error = 2; // File doesn't exist
  77             return false;
  78         }
  79     }
  80
  81     /**
  82      * reads data from current position
  83      * @param integer $bytes number of bytes to read
  84      * @return string read data
  85      */
  86     function read($bytes) {
  87         fseek($this->_fd, $this->_pos);
  88         $data = fread($this->_fd, $bytes);
  89         $this->_pos = ftell($this->_fd);
  90
  91         return $data;
  92     }
  93
  94     /**
  95      * Moves to defined position in a file
  96      * @param integer $pos position
  97      * @return integer current position
  98      */
  99     function seekto($pos) {
 100         fseek($this->_fd, $pos);
 101         $this->_pos = ftell($this->_fd);
 102         return $this->_pos;
 103     }
 104
 105     /**
 106      * return current position
 107      * @return integer current position
 108      */
 109     function currentpos() {
 110         return $this->_pos;
 111     }
 112
 113     /**
 114      * return file length
 115      * @return integer file length
 116      */
 117     function length() {
 118         return $this->_length;
 119     }
 120
 121     /**
 122      * close translation file
 123      */
 124     function close() {
 125         fclose($this->_fd);
 126     }
 127 }