www.gusucode.com > Ectouch手机端网购商城系统PHP版源码程序 > ectouch/include/vendor/Zip.class.php
<?php
/* 访问控制 */
defined('IN_ECTOUCH') or die('Deny Access');
/**
* 解压缩类
*/
class Zip {
protected $datasec = array();
protected $ctrl_dir = array();
protected $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
protected $old_offset = 0;
protected $total_files = 0;
protected $total_folders = 0;
public function compress($zip_filename = 'ecTouch.zip', $dir = './', $path_replace = '') {
if (function_exists('gzcompress')) {
$filelist = $this->GetFileList($dir);
if (count($filelist) > 0) {
foreach ($filelist as $filename) {
if (is_file($filename)) {
$fd = fopen($filename, "r");
$content = fread($fd, filesize($filename));
fclose($fd);
$this->addFile($content, str_replace($path_replace, '', $filename));
}
}
$out = $this->file();
$fp = fopen($zip_filename, "w");
fwrite($fp, $out, strlen($out));
fclose($fp);
return true;
}
}
return false;
}
public function decompress($zip_filename = 'ecTouch.zip', $dir = './') {
$index = array(-1);
$ok = 0;
$zip_fp = @fopen($zip_filename, 'rb');
if (!$zip_fp)
return false;
$cdir = $this->ReadCentralDir($zip_fp, $zip_filename);
$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] > $cdir['entries'])
return false;
}
for ($i = 0; $i < $cdir['entries']; $i++) {
@fseek($zip_fp, $pos_entry);
$header = $this->ReadCentralFileHeaders($zip_fp);
$header['index'] = $i;
$pos_entry = ftell($zip_fp);
@rewind($zip_fp);
fseek($zip_fp, $header['offset']);
if (in_array("-1", $index) || in_array($i, $index))
$stat[$header['filename']] = $this->ExtractFile($header, $dir, $zip_fp);
}
fclose($zip_fp);
return $stat;
}
private function GetFileList($dir) {
$file = array();
if (file_exists($dir)) {
if (substr($dir, -1) != "/") {
$dir .= "/";
}
$dh = opendir($dir);
while ($files = readdir($dh)) {
if (($files != ".") && ($files != "..")) {
if (is_dir($dir . $files)) {
$file = array_merge($file, $this->GetFileList($dir . $files));
} else
$file[] = $dir . $files;
}
}
closedir($dh);
}
$file[] = '';
return $file;
}
private function unix2DosTime($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) | ($timearray['seconds'] >> 1);
}
private function addFile($data, $name, $time = 0) {
$name = str_replace('\\', '/', $name);
$dtime = dechex($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"; // ver needed to extract
$fr .= "\x00\x00"; // gen purpose bit flag
$fr .= "\x08\x00"; // compression method
$fr .= $hexdtime; // last mod time and date
// "local file header" segment
$unc_len = strlen($data);
$crc = crc32($data);
$zdata = gzcompress($data);
$c_len = strlen($zdata);
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
$fr .= pack('V', $crc); // crc32
$fr .= pack('V', $c_len); // compressed filesize
$fr .= pack('V', $unc_len); // uncompressed filesize
$fr .= pack('v', strlen($name)); // length of filename
$fr .= pack('v', 0); // extra field length
$fr .= $name;
// "file data" segment
$fr .= $zdata;
// "data descriptor" segment (optional but necessary if archive is not
// served as file)
$fr .= pack('V', $crc); // crc32
$fr .= pack('V', $c_len); // compressed filesize
$fr .= pack('V', $unc_len); // uncompressed filesize
// add this entry to array
$this->datasec[] = $fr;
$new_offset = strlen(implode('', $this->datasec));
// now add to central directory record
$cdrec = "\x50\x4b\x01\x02";
$cdrec .= "\x00\x00"; // version made by
$cdrec .= "\x14\x00"; // version needed to extract
$cdrec .= "\x00\x00"; // gen purpose bit flag
$cdrec .= "\x08\x00"; // compression method
$cdrec .= $hexdtime; // last mod time & date
$cdrec .= pack('V', $crc); // crc32
$cdrec .= pack('V', $c_len); // compressed filesize
$cdrec .= pack('V', $unc_len); // uncompressed filesize
$cdrec .= pack('v', strlen($name)); // length of filename
$cdrec .= pack('v', 0); // extra field length
$cdrec .= pack('v', 0); // file comment length
$cdrec .= pack('v', 0); // disk number start
$cdrec .= pack('v', 0); // internal file attributes
$cdrec .= pack('V', 32); // external file attributes - 'archive' bit set
$cdrec .= pack('V', $this->old_offset); // relative offset of local header
$this->old_offset = $new_offset;
$cdrec .= $name;
$this->ctrl_dir[] = $cdrec;
}
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($data)) .
"\x00\x00";
}
//下面是zip解压部分
protected function ReadFileHeader($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 $header;
}
protected function ReadCentralFileHeaders($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 $header;
}
protected function ReadCentralDir($zip, $zip_name) {
$size = filesize($zip_name);
if ($size < 277)
$maximum_size = $size;
else
$maximum_size = 277;
@fseek($zip, $size - $maximum_size);
$pos = ftell($zip);
$bytes = 0x00000000;
while ($pos < $size) {
$byte = @fread($zip, 1);
$bytes = ($bytes << 8) | ord($byte);
if ($bytes == 0x504b0506 or $bytes == 0x2e706870504b0506) {
$pos++;
break;
} $pos++;
}
$fdata = fread($zip, 18);
$data = @unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', $fdata);
if ($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 $centd;
}
protected function ExtractFile($header, $to, $zip) {
$header = $this->readfileheader($zip);
if (substr($to, -1) != "/")
$to.="/";
if ($to == './')
$to = '';
$pth = explode("/", $to . $header['filename']);
$mydir = '';
for ($i = 0; $i < count($pth) - 1; $i++) {
if (!$pth[$i])
continue;
$mydir .= $pth[$i] . "/";
if ((!is_dir($mydir) && @mkdir($mydir, 0777)) || (($mydir == $to . $header['filename'] || ($mydir == $to && $this->total_folders == 0)) && is_dir($mydir))) {
@chmod($mydir, 0777);
$this->total_folders ++;
}
}
if (strrchr($header['filename'], '/') == '/')
return;
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 . $header['filename'] . '.gz', 'rb') or die("Cette archive est compress閑");
if (!$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');
}
}
$this->total_files ++;
return true;
}
}
?>