ArchiveZip.class.php

gehe zur Dokumentation dieser Datei

<?php


class ArchiveZip
{
     var $datasec = array(); 
     var $ctrl_dir = array(); 
     var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00"; 
     var $old_offset = 0; 
  

     function add_file($data, $name)
     { 
          $name    = str_replace("\\", "/", $name); 
          $unc_len = strlen($data); 
          $crc     = crc32($data); 
          $zdata   = gzcompress($data); 
          $zdate   = substr ($zdata, 2, -4); 
          $c_len   = strlen($zdata); 
   
   
   
          $fr = "\x50\x4b\x03\x04"; 
          $fr .= "\x14\x00"; 
          $fr .= "\x00\x00"; 
          $fr .= "\x08\x00"; 
          $fr .= "\x00\x00\x00\x00"; 
          $fr .= pack("V",$crc); 
          $fr .= pack("V",$c_len); 
          $fr .= pack("V",$unc_len); 
          $fr .= pack("v", strlen($name) ); 
          $fr .= pack("v", 0 ); 
          $fr .= $name; 
          $fr .= $zdata; 
          $fr .= pack("V",$crc); 
          $fr .= pack("V",$c_len); 
          $fr .= pack("V",$unc_len); 

          $this -> datasec[] = $fr;



          $new_offset = strlen(implode("", $this->datasec)); 
           
          $cdrec = "\x50\x4b\x01\x02"; 
          $cdrec .="\x00\x00"; 
          $cdrec .="\x14\x00"; 
          $cdrec .="\x00\x00"; 
          $cdrec .="\x08\x00"; 
          $cdrec .="\x00\x00\x00\x00"; 
          $cdrec .= pack("V",$crc); 
          $cdrec .= pack("V",$c_len); 
          $cdrec .= pack("V",$unc_len); 
          $cdrec .= pack("v", strlen($name) ); 
          $cdrec .= pack("v", 0 ); 
          $cdrec .= pack("v", 0 ); 
          $cdrec .= pack("v", 0 ); 
          $cdrec .= pack("v", 0 ); 
          $cdrec .= pack("V", 32 ); 
          $cdrec .= pack("V", $this -> old_offset ); 
           
          $this -> old_offset = $new_offset; 
           
          $cdrec .= $name; 
          $this -> ctrl_dir[] = $cdrec; 
     }


     function file() { 
        $data = implode("", $this -> datasec); 
        $ctrldir = implode("", $this -> ctrl_dir); 
 
          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"; 
     } 
}

?>