php实现文件压缩

php中文网

发布时间：2016-06-08 17:32:49

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来源于php中文网

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/*
－－－－－－－－－－－－－－－－－－－－－－－－－－
Copyright by T.muqiao(39号天堂桥)
本程序仅供学习讨论使用,在未通知作者作为任何商业用途
         视为中华人民共和国不道德公民
联系方式:442536278@qq.com
－－－－－－－－－－－－－－－－－－－－－－－－－*/
if(!defined('IN_SELF')){
header('HTTP/1.1 404 NOT Found');
exit;
}
class ZipAllFloder{//压缩文件夹

var $datasec      = array();
var $ctrl_dir     = array();
var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
var $old_offset   = 0;
var $dirs         = array(".","");
var $dirlen       = 0;

function IniVars(){//初始化变量
        $this -> datasec      = array();
        $this -> ctrl_dir     = array();
        $this -> eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
        $this -> old_offset   = 0;
        $this -> dirs         = array(".","");
  $this -> dirlen       = 0;
    }

function ZipFolder($dir,$zipfilename){//压缩一个文件夹
        if(substr($dir,-1)!="/"){
   $dir .= "/";
  }
  $this -> dirlen = strlen($dir);
        $this -> AddFolderContent($dir);
        $out = $this -> get_file();
        $this -> IniVars();
        $fp = fopen($zipfilename,"w");
        fwrite($fp,$out,strlen($out));
        fclose($fp);
    }

    function AddFolderContent($dir){//添加文件夹中文件内容
        if(is_dir($dir)){
   $folder = substr($dir,$this ->dirlen);
            if(!in_array($folder,$this->dirs)){
                $this->add_Dir($folder);
            }
            $handle = opendir($dir);
            while($files = readdir($handle)){
                if (($files==".")||($files=="..")) continue;
                if(is_dir($dir.$files)){
                    $this->AddFolderContent($dir.$files."/");
                }else{
                    $fp = fopen ($dir.$files,"r");
                    $content = @fread ($fp,filesize($dir.$files));
                    fclose ($fp);
                    $this->add_File($content,$folder.$files);
                }
            }
            closedir($handle);
        }
    }
function get_file(){//获得压缩文件数据
        $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";
    }

    function add_dir($name){
        $name   = str_replace("\\", "/", $name);
        $fr     = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
        $fr    .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
        $fr    .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0);
        $this -> datasec[] = $fr;
        $new_offset = strlen(implode("", $this->datasec));
        $cdrec = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
        $cdrec .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
        $cdrec .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 );
        $ext = "\xff\xff\xff\xff";
        $cdrec .= pack("V", 16 ).pack("V", $this -> old_offset ).$name;
        $this -> ctrl_dir[] = $cdrec;
        $this -> old_offset = $new_offset;
        $this -> dirs[] = $name;
    }

    function add_File($data, $name, $compact = 1){
        $name     = str_replace('\\', '/', $name);
        $dtime    = dechex($this->DosTime());
        $hexdtime = '\x' . $dtime[6] . $dtime[7].'\x'.$dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3].'\x'.$dtime[0].$dtime[1];
        eval('$hexdtime = "' . $hexdtime . '";');
        if($compact){
            $fr = "\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00".$hexdtime;
        }else{
            $fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00".$hexdtime;
        }
        $unc_len = strlen($data); $crc = crc32($data);
        if($compact){
            $zdata = gzcompress($data); $c_len = strlen($zdata);
            $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
        }else{
            $zdata = $data;
        }
        $c_len=strlen($zdata);
        $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
        $fr .= pack('v', strlen($name)).pack('v', 0).$name.$zdata;
        $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
        $this -> datasec[] = $fr;
        $new_offset        = strlen(implode('', $this->datasec));
        if($compact){
            $cdrec = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00";
        }else{
            $cdrec = "\x50\x4b\x01\x02\x14\x00\x0a\x00\x00\x00\x00\x00";
        }
        $cdrec .= $hexdtime.pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
        $cdrec .= pack('v', strlen($name) ).pack('v', 0 ).pack('v', 0 );
        $cdrec .= pack('v', 0 ).pack('v', 0 ).pack('V', 32 );
        $cdrec .= pack('V', $this -> old_offset );
        $this -> old_offset = $new_offset;
        $cdrec .= $name;
        $this -> ctrl_dir[] = $cdrec;
        return true;
    }

    function DosTime() {
        $timearray = getdate();
        if ($timearray['year']             $timearray['year'] = 1980; $timearray['mon'] = 1;
            $timearray['mday'] = 1; $timearray['hours'] = 0;
            $timearray['minutes'] = 0; $timearray['seconds'] = 0;
        }
        return (($timearray['year']-1980)>1);
    }
}

class UnCompress{
function get_List($zip_name){
  $zip   = @fopen($zip_name, 'rb');
  if(!$zip) return(0);
  $centd = $this->ReadCentralDir($zip,$zip_name);
  @rewind($zip);
  @fseek($zip, $centd['offset']);
  for ($i=0; $i    $header                  = $this->ReadCentralFileHeaders($zip);
   $header['index']         = $i;
   $info['filename']        = $header['filename'];
   $info['stored_filename'] = $header['stored_filename'];
   $info['size']            = $header['size'];
   $info['compressed_size'] = $header['compressed_size'];
   $info['crc']             = strtoupper(dechex( $header['crc'] ));
   $info['mtime']           = $header['mtime'];
   $info['comment']         = $header['comment'];
   $info['folder']          = ($header['external']==0x41FF0010||$header['external']==16)?1:0;
   $info['index']           = $header['index'];$info['status'] = $header['status'];
   $ret[]                   = $info;
   unset($header);
  }
  return $ret;
}

function Extract($zn,$to,$index = array(-1) ){
  $ok = 0;
  $zip = @fopen($zn,'rb');
  if(!$zip){
   return(-1);
  }
  $cdir = $this->ReadCentralDir($zip,$zn);
  $pos_entry = $cdir['offset'];
  if(!is_array($index)){
   $index = array($index);
  }
  for($i=0; $index[$i];$i++){
   if(intval($index[$i])!=$index[$i]||$index[$i]>$cdir['entries']){
    return(-1);
   }
  }
  for ($i=0; $i    @fseek($zip, $pos_entry);
   $header = $this->ReadCentralFileHeaders($zip);
   $header['index'] = $i; $pos_entry = ftell($zip);
   @rewind($zip); fseek($zip, $header['offset']);
   if(in_array("-1",$index)||in_array($i,$index)){
    $stat[$header['filename']]=$this->ExtractFile($header, $to, $zip);
   }
  }
  fclose($zip);
  return $stat;
}

function ReadFileHeader($zip){
  $binary_data = fread($zip, 30);
  $data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);
  $header['filename'] = fread($zip, $data['filename_len']);
  if ($data['extra_len'] != 0) {
   $header['extra'] = fread($zip, $data['extra_len']);
  }else{
   $header['extra'] = '';
  }
  $header['compression'] = $data['compression'];$header['size'] = $data['size'];
  $header['compressed_size'] = $data['compressed_size'];
  $header['crc'] = $data['crc']; $header['flag'] = $data['flag'];
  $header['mdate'] = $data['mdate'];$header['mtime'] = $data['mtime'];
  if ($header['mdate'] && $header['mtime']){
   $hour=($header['mtime']&0xF800)>>11;$minute=($header['mtime']&0x07E0)>>5;
   $seconde=($header['mtime']&0x001F)*2;$year=(($header['mdate']&0xFE00)>>9)+1980;
   $month=($header['mdate']&0x01E0)>>5;$day=$header['mdate']&0x001F;
   $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
  }else{
   $header['mtime'] = time();
  }
  $header['stored_filename'] = $header['filename'];
  $header['status'] = "ok";
  return $header;
}

function ReadCentralFileHeaders($zip){
  $binary_data = fread($zip, 46);
  $header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);
  if ($header['filename_len'] != 0){
   $header['filename'] = fread($zip,$header['filename_len']);
  }else{
   $header['filename'] = '';
  }
  if ($header['extra_len'] != 0){
   $header['extra'] = fread($zip, $header['extra_len']);
  }else{
   $header['extra'] = '';
  }
  if ($header['comment_len'] != 0){
   $header['comment'] = fread($zip, $header['comment_len']);
  }else {
   $header['comment'] = '';
  }
  if ($header['mdate'] && $header['mtime']){
   $hour = ($header['mtime'] & 0xF800) >> 11;
   $minute = ($header['mtime'] & 0x07E0) >> 5;
   $seconde = ($header['mtime'] & 0x001F)*2;
   $year = (($header['mdate'] & 0xFE00) >> 9) + 1980;
   $month = ($header['mdate'] & 0x01E0) >> 5;
   $day = $header['mdate'] & 0x001F;
   $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
  }else{
   $header['mtime'] = time();
  }
  $header['stored_filename'] = $header['filename'];
  $header['status'] = 'ok';
  if (substr($header['filename'], -1) == '/'){
   $header['external'] = 0x41FF0010;
  }
  return $header;
}

function ReadCentralDir($zip,$zip_name){
  $size = filesize($zip_name);
  if ($size    $maximum_size = $size;
  }else{
   $maximum_size=277;
  }
  @fseek($zip, $size-$maximum_size);
  $pos = ftell($zip);
  $bytes = 0x00000000;
  while ($pos    $byte = @fread($zip, 1); $bytes=($bytes    if ($bytes == 0x504b0506){
    $pos++;
    break;
   }
   $pos++;
  }
  $data = unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size',
  fread($zip, 18));
  if ($data['comment_size'] != 0){
   $centd['comment'] = fread($zip, $data['comment_size']);
  }else{
   $centd['comment'] = ''; $centd['entries'] = $data['entries'];
  }
  $centd['disk_entries'] = $data['disk_entries'];
  $centd['offset'] = $data['offset'];$centd['disk_start'] = $data['disk_start'];
  $centd['size'] = $data['size']; $centd['disk'] = $data['disk'];
  return $centd;
}

function ExtractFile($header,$to,$zip){
  $header = $this->readfileheader($zip);
  if(substr($to,-1)!="/"){
   $to.="/";
  }
  if(!@is_dir($to)){
   @mkdir($to,0777);
  }
  $pth = explode("/",dirname($header['filename']));
  for($i=0;isset($pth[$i]);$i++){
   if(!$pth[$i]){
    continue;
   }
   if(!is_dir($to.$pth[$i])){
    @mkdir($to.$pth[$i],0777);
   }
  }
  if (!($header['external']==0x41FF0010)&&!($header['external']==16)){
   if ($header['compression']==0){
    $fp = @fopen($to.$header['filename'], 'wb');
    if(!$fp){
     return(-1);
    }
    $size = $header['compressed_size'];
    while ($size != 0){
     $read_size = ($size      $buffer = fread($zip, $read_size);
     $binary_data = pack('a'.$read_size, $buffer);
     @fwrite($fp, $binary_data, $read_size);
     $size -= $read_size;
    }
    fclose($fp);
    touch($to.$header['filename'], $header['mtime']);
   }else{
    $fp = @fopen($to.$header['filename'].'.gz','wb');
    if(!$fp){
     return(-1);
    }
    $binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']),
    Chr(0x00), time(), Chr(0x00), Chr(3));
    fwrite($fp, $binary_data, 10);
    $size = $header['compressed_size'];
    while ($size != 0){
     $read_size = ($size      $buffer = fread($zip, $read_size);
     $binary_data = pack('a'.$read_size, $buffer);
     @fwrite($fp, $binary_data, $read_size);
     $size -= $read_size;
    }
    $binary_data = pack('VV', $header['crc'], $header['size']);
    fwrite($fp, $binary_data,8); fclose($fp);
    $gzp = @gzopen($to.$header['filename'].'.gz','rb') or die("Cette archive est compress");
    if(!$gzp){
     return(-2);
    }
    $fp = @fopen($to.$header['filename'],'wb');
    if(!$fp){
     return(-1);
    }
    $size = $header['size'];
    while ($size != 0){
     $read_size = ($size      $buffer = gzread($gzp, $read_size);
     $binary_data = pack('a'.$read_size, $buffer);
     @fwrite($fp, $binary_data, $read_size);
     $size -= $read_size;
    }
    fclose($fp); gzclose($gzp);
    touch($to.$header['filename'], $header['mtime']);
    @unlink($to.$header['filename'].'.gz');
   }
  }
  return true;
}
}

class StatFolder{//统计文件夹内容
var $Num       = 0;
var $Size      = 0;
var $TypeNum   = 0;
var $FolderNum = 0;
var $Type      = array();
function __construct($folder){
  $this -> ReadFolder($folder);
}
function StatFolder($folder){
  $this -> ReadFolder($folder);
}
function ReadFolder($folder){
  if(is_dir($folder)){
   $handle = opendir($folder);
            while($files = readdir($handle)){
                if (($files==".")||($files=="..")) continue;
                if(is_dir($folder."/".$files)){
     $this ->FolderNum++;
                    $this ->ReadFolder($folder."/".$files);
                }else{
     $this ->Num++;
     $type = fileext($files);
     if(!in_array($type,$this ->Type)){
      $this ->Type[] = $type;
      $this ->TypeNum++;
     }
                    $size = filesize($folder."/".$files);
                    $this->Size +=$size;
     clearstatcache();
                }
            }
            closedir($handle);
        }
}
function GetFileNum(){
  return $this -> Num;
}
function GetTotalSize(){
  $switch = $this->Size/1024;
  if($switch    $return = explode(".",$switch);
   if($return[0]==0){
    return $this->Size."　bytes";
   }
   return $return[0].".".substr($return[1],0,3)."　Kbytes";
  }else{
   $switch /=1024;
   $return = explode(".",$switch);
   return $return[0].".".substr($return[1],0,3)."　Mbytes";
  }
}
function GetTypeNum(){
  return $this -> TypeNum;
}
function GetFolderNum(){
  return $this -> FolderNum;
}
}

function checkcore($path){//检查核心文件是否包含其中
global $T_corefile;
for($i=0;$p=$T_corefile[$i];$i++){
  if(matchpath($p,$path)){
   return true;
   break;
  }
}
}