254 lines
8.5 KiB
PHP
Executable File
254 lines
8.5 KiB
PHP
Executable File
<?php
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/**
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* ECSHOP ZIP 处理类
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* ============================================================================
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* * 版权所有 2005-2012 上海商派网络科技有限公司，并保留所有权利。
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* 网站地址: http://www.ecshop.com；
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* ----------------------------------------------------------------------------
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* 这不是一个自由软件！您只能在不用于商业目的的前提下对程序代码进行修改和
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* 使用；不允许对程序代码以任何形式任何目的的再发布。
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* ============================================================================
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* $Author: liubo $
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* $Id: cls_phpzip.php 17217 2011-01-19 06:29:08Z liubo $
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*/
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if (!defined('IN_ECS'))
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{
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die('Hacking attempt');
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}
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class PHPZip
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{
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function zip($dir, $zipfilename, $drop=false)
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{
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if (substr($dir, -1) != '/')
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{
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$dir = ($dir == '') ? './' : $dir . '/';
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}
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if (@function_exists('gzcompress'))
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{
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$curdir = getcwd();
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if (is_array($dir))
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{
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$filelist = $dir;
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}
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else
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{
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$filelist = $this -> get_filelist($dir);
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}
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if ((!empty($dir)) && (!is_array($dir))&&(file_exists($dir)))
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{
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chdir($dir);
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}
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else
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{
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chdir($curdir);
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}
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if (count($filelist) > 0)
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{
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foreach ($filelist AS $filename)
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{
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if (is_file($filename))
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{
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$fd = fopen ($filename, 'rb');
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$content = fread ($fd, filesize ($filename));
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fclose ($fd);
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if (is_array($dir))
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{
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$filename = basename($filename);
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}
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$this -> add_file($content, $filename);
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if ($drop)
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{
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@unlink($filename);
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}
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}
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}
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$out = $this -> file();
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chdir($curdir);
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$fp = fopen($zipfilename, 'wb');
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fwrite($fp, $out, strlen($out));
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fclose($fp);
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}
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return 1;
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}
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else
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{
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return 0;
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}
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}
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function get_filelist($dir)
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{
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$file = array();
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$dir = rtrim($dir,'/');
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if (file_exists($dir))
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{
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$args = func_get_args();
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$pref = isset($args[1]) ? $args[1] : '';
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$dh = opendir($dir);
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while (($files = readdir($dh)) !== false)
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{
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if (($files != '.') && ($files != '..'))
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{
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if (is_dir($dir .'/'. $files))
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{
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$file = array_merge($file, $this -> get_filelist($dir .'/'. $files, "$pref$files/"));
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}
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else
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{
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$file[] = $pref . $files;
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}
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}
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}
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closedir($dh);
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}
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return $file;
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}
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var $datasec = array();
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var $ctrl_dir = array();
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var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
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var $old_offset = 0;
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/**
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* Converts an Unix timestamp to a four byte DOS date and time format (date
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* in high two bytes, time in low two bytes allowing magnitude comparison).
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*
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* @param integer the current Unix timestamp
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*
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* @return integer the current date in a four byte DOS format
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*
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* @access private
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*/
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function unix2DosTime($unixtime = 0)
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{
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$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
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if ($timearray['year'] < 1980) {
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$timearray['year'] = 1980;
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$timearray['mon'] = 1;
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$timearray['mday'] = 1;
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$timearray['hours'] = 0;
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$timearray['minutes'] = 0;
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$timearray['seconds'] = 0;
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} // end if
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return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |
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($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
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} // end of the 'unix2DosTime()' method
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/**
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* Adds "file" to archive
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*
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* @param string file contents
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* @param string name of the file in the archive (may contains the path)
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* @param integer the current timestamp
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*
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* @access public
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*/
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function add_file($data, $name, $time = 0)
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{
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$name = str_replace('\\', '/', $name);
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$dtime = dechex($this->unix2DosTime($time));
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$hexdtime = '\x' . $dtime[6] . $dtime[7]
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. '\x' . $dtime[4] . $dtime[5]
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. '\x' . $dtime[2] . $dtime[3]
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. '\x' . $dtime[0] . $dtime[1];
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eval('$hexdtime = "' . $hexdtime . '";');
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$fr = "\x50\x4b\x03\x04";
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$fr .= "\x14\x00"; // ver needed to extract
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$fr .= "\x00\x00"; // gen purpose bit flag
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$fr .= "\x08\x00"; // compression method
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$fr .= $hexdtime; // last mod time and date
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// "local file header" segment
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$unc_len = strlen($data);
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$crc = crc32($data);
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$zdata = gzcompress($data);
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$c_len = strlen($zdata);
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$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
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$fr .= pack('V', $crc); // crc32
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$fr .= pack('V', $c_len); // compressed filesize
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$fr .= pack('V', $unc_len); // uncompressed filesize
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$fr .= pack('v', strlen($name)); // length of filename
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$fr .= pack('v', 0); // extra field length
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$fr .= $name;
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// "file data" segment
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$fr .= $zdata;
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// "data descriptor" segment (optional but necessary if archive is not
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// served as file)
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$fr .= pack('V', $crc); // crc32
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$fr .= pack('V', $c_len); // compressed filesize
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$fr .= pack('V', $unc_len); // uncompressed filesize
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// add this entry to array
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$this -> datasec[] = $fr;
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$new_offset = strlen(implode('', $this->datasec));
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// now add to central directory record
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$cdrec = "\x50\x4b\x01\x02";
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$cdrec .= "\x00\x00"; // version made by
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$cdrec .= "\x14\x00"; // version needed to extract
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$cdrec .= "\x00\x00"; // gen purpose bit flag
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$cdrec .= "\x08\x00"; // compression method
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$cdrec .= $hexdtime; // last mod time & date
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$cdrec .= pack('V', $crc); // crc32
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$cdrec .= pack('V', $c_len); // compressed filesize
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$cdrec .= pack('V', $unc_len); // uncompressed filesize
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$cdrec .= pack('v', strlen($name) ); // length of filename
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$cdrec .= pack('v', 0 ); // extra field length
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$cdrec .= pack('v', 0 ); // file comment length
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$cdrec .= pack('v', 0 ); // disk number start
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$cdrec .= pack('v', 0 ); // internal file attributes
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$cdrec .= pack('V', 32 ); // external file attributes - 'archive' bit set
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$cdrec .= pack('V', $this -> old_offset ); // relative offset of local header
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$this -> old_offset = $new_offset;
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$cdrec .= $name;
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// optional extra field, file comment goes here
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// save to central directory
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$this -> ctrl_dir[] = $cdrec;
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} // end of the 'add_file()' method
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/**
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* Dumps out file
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*
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* @return string the zipped file
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*
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* @access public
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*/
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function file()
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{
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$data = implode('', $this -> datasec);
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$ctrldir = implode('', $this -> ctrl_dir);
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return
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$data .
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$ctrldir .
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$this -> eof_ctrl_dir .
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pack('v', sizeof($this -> ctrl_dir)) . // total # of entries "on this disk"
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pack('v', sizeof($this -> ctrl_dir)) . // total # of entries overall
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pack('V', strlen($ctrldir)) . // size of central dir
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pack('V', strlen($data)) . // offset to start of central dir
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"\x00\x00"; // .zip file comment length
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} // end of the 'file()' method
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} // end of the 'PHPZip' class
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?>
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