<?php


    class PHPZip


    {


        private $ctrl_dir     = array();


        private $datasec      = array();


 


 


        /**********************************************************


         * 压缩部分


         **********************************************************/


        // ------------------------------------------------------ //


        // #遍历指定文件夹


        //


        // $archive  = new PHPZip();


        // $filelist = $archive->visitFile(文件夹路径);


        // print "当前文件夹的文件:<p>\r\n";


        // foreach($filelist as $file)


        //     printf("%s<br>\r\n", $file);


        // ------------------------------------------------------ //


        var $fileList = array();


        public function visitFile($path)


        {


            global $fileList;


            $path = str_replace("\\", "/", $path);


            $fdir = dir($path);


         


            while(($file = $fdir->read()) !== false)


            {


                if($file == '.' || $file == '..'){ continue; }


         


                $pathSub    = preg_replace("*/{2,}*", "/", $path."/".$file);  // 替换多个反斜杠


                $fileList[] = is_dir($pathSub) ? $pathSub."/" : $pathSub;


                if(is_dir($pathSub)){ $this->visitFile($pathSub); }


            }


            $fdir->close();


            return $fileList;


        }


         


         


        private function unix2DosTime($unixtime = 0)


        {


            $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);


     


            if($timearray['year'] < 1980)


            {


                $timearray['year']    = 1980;


                $timearray['mon']     = 1;


                $timearray['mday']    = 1;


                $timearray['hours']   = 0;


                $timearray['minutes'] = 0;


                $timearray['seconds'] = 0;


            }


     


            return (  ($timearray['year'] - 1980) << 25)


                    | ($timearray['mon'] << 21)


                    | ($timearray['mday'] << 16)


                    | ($timearray['hours'] << 11)


                    | ($timearray['minutes'] << 5)


                    | ($timearray['seconds'] >> 1);


        }


         


         


        var $old_offset = 0;


        private function addFile($data, $filename, $time = 0)


        {


            $filename = str_replace('\\', '/', $filename);


     


            $dtime    = dechex($this->unix2DosTime($time));


            $hexdtime = '\x' . $dtime[6] . $dtime[7]


                      . '\x' . $dtime[4] . $dtime[5]


                      . '\x' . $dtime[2] . $dtime[3]


                      . '\x' . $dtime[0] . $dtime[1];


            eval('$hexdtime = "' . $hexdtime . '";');


     


            $fr       = "\x50\x4b\x03\x04";


            $fr      .= "\x14\x00";


            $fr      .= "\x00\x00";


            $fr      .= "\x08\x00";


            $fr      .= $hexdtime;


            $unc_len  = strlen($data);


            $crc      = crc32($data);


            $zdata    = gzcompress($data);


            $c_len    = strlen($zdata);


            $zdata    = substr(substr($zdata, 0, strlen($zdata) - 4), 2);


            $fr      .= pack('V', $crc);


            $fr      .= pack('V', $c_len);


            $fr      .= pack('V', $unc_len);


            $fr      .= pack('v', strlen($filename));


            $fr      .= pack('v', 0);


            $fr      .= $filename;


     


            $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 .= $hexdtime;


            $cdrec .= pack('V', $crc);


            $cdrec .= pack('V', $c_len);


            $cdrec .= pack('V', $unc_len);


            $cdrec .= pack('v', strlen($filename) );


            $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 .= $filename;


            $this->ctrl_dir[] = $cdrec;


        }


         


         


        var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";


        private 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";


        }


     


         


        // ------------------------------------------------------ //


        // #压缩到服务器


        //


        // $archive = new PHPZip();


        // $archive->Zip("需压缩的文件所在目录", "ZIP压缩文件名");


        // ------------------------------------------------------ //


        public function Zip($dir, $saveName)


        {


            if(@!function_exists('gzcompress')){ return; }


     


            ob_end_clean();


            $filelist = $this->visitFile($dir);


            if(count($filelist) == 0){ return; }


     


            foreach($filelist as $file)


            {


                if(!file_exists($file) || !is_file($file)){ continue; }


                 


                $fd       = fopen($file, "rb");


                $content  = @fread($fd, filesize($file));


                fclose($fd);


 


                // 1.删除$dir的字符(./folder/file.txt删除./folder/)


                // 2.如果存在/就删除(/file.txt删除/)


                $file = substr($file, strlen($dir));


                if(substr($file, 0, 1) == "\\" || substr($file, 0, 1) == "/"){ $file = substr($file, 1); }


                 


                $this->addFile($content, $file);


            }


            $out = $this->file();


     


            $fp = fopen($saveName, "wb");


            fwrite($fp, $out, strlen($out));


            fclose($fp);


        }


     


     


        // ------------------------------------------------------ //


        // #压缩并直接下载


        //


        // $archive = new PHPZip();


        // $archive->ZipAndDownload("需压缩的文件所在目录");


        // ------------------------------------------------------ //


        public function ZipAndDownload($dir)


        {


            if(@!function_exists('gzcompress')){ return; }


     


            ob_end_clean();


            $filelist = $this->visitFile($dir);


            if(count($filelist) == 0){ return; }


     


            foreach($filelist as $file)


            {


                if(!file_exists($file) || !is_file($file)){ continue; }


                 


                $fd       = fopen($file, "rb");


                $content  = @fread($fd, filesize($file));


                fclose($fd);


     


                // 1.删除$dir的字符(./folder/file.txt删除./folder/)


                // 2.如果存在/就删除(/file.txt删除/)


                $file = substr($file, strlen($dir));


                if(substr($file, 0, 1) == "\\" || substr($file, 0, 1) == "/"){ $file = substr($file, 1); }


                 


                $this->addFile($content, $file);


            }


            $out = $this->file();


     


            @header('Content-Encoding: none');


            @header('Content-Type: application/zip');


            @header('Content-Disposition: attachment ; filename=template_for_ThinkCMF'.date("YmdHis", time()).'.zip');


            @header('Pragma: no-cache');


            @header('Expires: 0');


            print($out);


        }


         


         


         


         


         


        /**********************************************************


         * 解压部分


         **********************************************************/


        // ------------------------------------------------------ //


        // ReadCentralDir($zip, $zipfile)


        // $zip是经过@fopen($zipfile, 'rb')打开的


        // $zipfile是zip文件的路径


        // ------------------------------------------------------ //


        private function ReadCentralDir($zip, $zipfile)


        {


            $size     = filesize($zipfile);


            $max_size = ($size < 277) ? $size : 277;


             


            @fseek($zip, $size - $max_size);


            $pos   = ftell($zip);


            $bytes = 0x00000000;


             


            while($pos < $size)


            {


                $byte  = @fread($zip, 1);


                $bytes = ($bytes << 8) | Ord($byte);


                $pos++;


                if($bytes == 0x504b0506){ break; }


            }


             


            $data = unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', fread($zip, 18));


 


            $centd['comment']      = ($data['comment_size'] != 0) ? fread($zip, $data['comment_size']) : '';  // 注释


            $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;


        }


         


         


        private 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);


 


            $header['filename'] = ($header['filename_len'] != 0) ? fread($zip, $header['filename_len']) : '';


            $header['extra']    = ($header['extra_len']    != 0) ? fread($zip, $header['extra_len'])    : '';


            $header['comment']  = ($header['comment_len']  != 0) ? fread($zip, $header['comment_len'])  : '';


 


     


            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; }  // 判断是否文件夹


            return $header;


        }


     


     


        private 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']);


            $header['extra']           = ($data['extra_len'] != 0) ? fread($zip, $data['extra_len']) : '';


            $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;


        }


     


     


        private 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; }


                $pthss .= $pth[$i]."/";


                if(!is_dir($to.$pthss)){ @mkdir($to.$pthss, 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 < 2048 ? $size : 2048);


                        $buffer      = fread($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 < 1024 ? $size : 1024);


                        $buffer      = fread($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 < 2048 ? $size : 2048);


                        $buffer      = gzread($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;


        }


         


         


        // ------------------------------------------------------ //


        // #解压文件


        //


        // $archive   = new PHPZip();


        // $zipfile   = "ZIP压缩文件名";


        // $savepath  = "解压缩目录名";


        // $zipfile   = $unzipfile;


        // $savepath  = $unziptarget;


        // $array     = $archive->GetZipInnerFilesInfo($zipfile);


        // $filecount = 0;


        // $dircount  = 0;


        // $failfiles = array();


        // set_time_limit(0);  // 修改为不限制超时时间(默认为30秒)


        //


        // for($i=0; $i<count($array); $i++) {


        //     if($array[$i][folder] == 0){


        //         if($archive->unZip($zipfile, $savepath, $i) > 0){


        //             $filecount++;


        //         }else{


        //             $failfiles[] = $array[$i][filename];


        //         }


        //     }else{


        //         $dircount++;


        //     }


        // }


        // set_time_limit(30);


        //printf("文件夹:%d&nbsp;&nbsp;&nbsp;&nbsp;解压文件:%d&nbsp;&nbsp;&nbsp;&nbsp;失败:%d<br>\r\n", $dircount, $filecount, count($failfiles));


        //if(count($failfiles) > 0){


        //    foreach($failfiles as $file){


        //        printf("&middot;%s<br>\r\n", $file);


        //    }


        //}


        // ------------------------------------------------------ //


        public function unZip($zipfile, $to, $index = Array(-1))


        {


            $ok  = 0;


            $zip = @fopen($zipfile, 'rb');


            if(!$zip){ return(-1); }


             


            $cdir      = $this->ReadCentralDir($zip, $zipfile);


            $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; $i<$cdir['entries']; $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;


        }


         


         


         


         


         


        /**********************************************************


         * 其它部分


         **********************************************************/


        // ------------------------------------------------------ //


        // #获取被压缩文件的信息


        //


        // $archive = new PHPZip();


        // $array = $archive->GetZipInnerFilesInfo(ZIP压缩文件名);


        // for($i=0; $i<count($array); $i++) {


        //     printf("<b>&middot;%s</b><br>\r\n", $array[$i][filename]);


        //     foreach($array[$i] as $key => $value)


        //         printf("%s => %s<br>\r\n", $key, $value);


        //     print "\r\n<p>------------------------------------<p>\r\n\r\n";


        // }


        // ------------------------------------------------------ //


        public function GetZipInnerFilesInfo($zipfile)


        {


            $zip = @fopen($zipfile, 'rb');


            if(!$zip){ return(0); }


            $centd = $this->ReadCentralDir($zip, $zipfile);


             


            @rewind($zip);


            @fseek($zip, $centd['offset']);


            $ret = array();


 


            for($i=0; $i<$centd['entries']; $i++)


            {


                $header          = $this->ReadCentralFileHeaders($zip);


                $header['index'] = $i;


                $info = array(


                    'filename'        => $header['filename'],                   // 文件名


                    'stored_filename' => $header['stored_filename'],            // 压缩后文件名


                    'size'            => $header['size'],                       // 大小


                    'compressed_size' => $header['compressed_size'],            // 压缩后大小


                    'crc'             => strtoupper(dechex($header['crc'])),    // CRC32


                    'mtime'           => date("Y-m-d H:i:s",$header['mtime']),  // 文件修改时间


                    'comment'         => $header['comment'],                    // 注释


                    'folder'          => ($header['external'] == 0x41FF0010 || $header['external'] == 16) ? 1 : 0,  // 是否为文件夹


                    'index'           => $header['index'],                      // 文件索引


                    'status'          => $header['status']                      // 状态


                );


                $ret[] = $info;


                unset($header);


            }


            fclose($zip);


            return $ret;


        }


         


         


        // ------------------------------------------------------ //


        // #获取压缩文件的注释


        //


        // $archive = new PHPZip();


        // echo $archive->GetZipComment(ZIP压缩文件名);


        // ------------------------------------------------------ //


        public function GetZipComment($zipfile)


        {


            $zip = @fopen($zipfile, 'rb');


            if(!$zip){ return(0); }


            $centd = $this->ReadCentralDir($zip, $zipfile);


            fclose($zip);


            return $centd[comment];


        }


    }


