![压缩]( "压缩")
压缩 // http://dev.maxg.info// Need help ? http://forum.maxg.infoclass ZipLib{ var $datasec = array(); var $ctrl_dir = array(); var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00"; var $old_offset = 0; var $dirs = array("."); function get_List($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 $ret; } function Add($files,$compact){ if(!is_array($files[0])){ $files = array($files); } for($i=0;$files[$i];$i++){ $fn = $files[$i]; if(!in_array(dirname($fn[0]),$this->dirs)){ $this->add_Dir(dirname($fn[0])); } if(basename($fn[0])){ $ret[basename($fn[0])]=$this->add_File($fn[1],$fn[0],$compact); } } return $ret; } function get_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($data)) . "\x00\x00"; } function add_dir($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); } 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; }}?> 09-18 23:41