[Sommaire] [Imprimer]

   1  <?php
   2  /**
   3  * @version $Id: zip.lib.php 49 2005-09-15 02:55:27Z rhuk $
   4  * @package Joomla
   5  */
   6  
   7  // no direct access
   8  defined( '_VALID_MOS' ) or die( 'Restricted access' );
   9  
  10  // $Id: zip.lib.php 49 2005-09-15 02:55:27Z rhuk $
  11  //
  12  // The "GNU General Public License" (GPL) is available at
  13  // http://www.gnu.org/copyleft/gpl.html.
  14  //
  15  //  http://www.zend.com/codex.php?id=535&single=1
  16  //    By Eric Mueller <eric@themepark.com>
  17  //
  18  //    http://www.zend.com/codex.php?id=470&single=1
  19  //    by Denis125 <webmaster@atlant.ru>
  20  //
  21  //    A patch from Peter Listiak <mlady@users.sourceforge.net> for last modified
  22  //    date and time of the compressed file
  23  //
  24  //    Official ZIP file format: http://www.pkware.com/appnote.txt
  25  
  26  // ensure this file is being included by a parent file
  27  defined( '_VALID_MOS' ) or die( 'Restricted access' );
  28  
  29  class zipfile {
  30      var $datasec = array();
  31      var $ctrl_dir = array();
  32      var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
  33      var $old_offset = 0;
  34  
  35  	function unix2DosTime($unixtime = 0) {
  36          $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
  37          if ($timearray['year'] < 1980) {
  38              $timearray['year']= 1980;
  39              $timearray['mon'] = 1;
  40              $timearray['mday']= 1;
  41              $timearray['hours']    = 0;
  42              $timearray['minutes'] = 0;
  43              $timearray['seconds'] = 0;
  44          }
  45          return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
  46      }
  47  
  48  	function addFile($data, $name, $time = 0) {
  49          $name = str_replace('\\', '/', $name);
  50  
  51          $dtime= dechex($this->unix2DosTime($time));
  52          $hexdtime = '\x' . $dtime[6] . $dtime[7] . '\x' . $dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3] . '\x' . $dtime[0] . $dtime[1];
  53          eval('$hexdtime = "' . $hexdtime . '";');
  54  
  55          $fr = "\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00" . $hexdtime;
  56  
  57          $unc_len = strlen($data);
  58          $crc = crc32($data);
  59          $zdata = gzcompress($data);
  60          $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
  61          $c_len    = strlen($zdata);
  62          $fr .= pack('V', $crc) . pack('V', $c_len) . pack('V', $unc_len) . pack('v', strlen($name)) . pack('v', 0) . $name . $zdata . pack('V', $crc) . pack('V', $c_len) . pack('V', $unc_len);
  63  
  64          $this -> datasec[] = $fr;
  65          $new_offset = strlen(implode('', $this->datasec));
  66  
  67          $cdrec = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00" . $hexdtime . pack('V', $crc) . pack('V', $c_len) . pack('V', $unc_len) . pack('v', strlen($name)) . pack('v', 0) . pack('v', 0) . pack('v', 0) . pack('v', 0) . pack('V', 32) . pack('V', $this -> old_offset );
  68          $this -> old_offset = $new_offset;
  69          $cdrec .= $name;
  70          $this -> ctrl_dir[] = $cdrec;
  71      }
  72  
  73  	function file() {
  74          $data = implode('', $this -> datasec);
  75          $ctrldir = implode('', $this -> ctrl_dir);
  76          return $data . $ctrldir . $this -> eof_ctrl_dir . pack('v', sizeof($this -> ctrl_dir)) .  pack('v', sizeof($this -> ctrl_dir)) .  pack('V', strlen($ctrldir)) . pack('V', strlen($data)) . "\x00\x00";
  77      }
  78  }
  79  ?>