php实现文件压缩

作者: phper
时间: 2015-07-04
分类: php代码

<?php

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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

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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{

"\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'] < 1980) {

$timearray['year'] = 1980; $timearray['mon'] = 1;

$timearray['mday'] = 1; $timearray['hours'] = 0;

$timearray['minutes'] = 0; $timearray['seconds'] = 0;

}

}

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

}

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 < 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){

$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 < 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;

}

//统计文件夹内容

class StatFolder{

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<1024){

$return = explode(".",$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;

}

//检查$testpath是否数学上的属于$reference参照路径

function matchpath($reference,$testpath){

$reference = explode("/",$reference);

$testpath = explode("/",$testpath);

$num1 = count($reference);

$num2 = count($testpath);

if($num1 < $num2){

return false;

}

$degree = 0;

for($i=0;$i<$num2;$i++){

if(strtolower($testpath[$i])==strtolower($reference[$i])){

$degree++;

continue;

}else{

return false;

break;

}

if($degree==$num2){

return true;

}

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;

}

function copypath($source,$target,$uncover=true){//拷贝整个目录默认不允许覆盖

global $T_lang;

if(is_dir($target)){

if($uncover){

$errors .= str_replace("--replace--",$target,$T_lang['func'][0]);

$gocover = false;

}else{

$gocover = true;

}

}else{

if(matchpath($target,$source)){//检测目录$source是否包含于$target

$errors .= str_replace("--replace--",$source,$T_lang['func'][1]);

$gocover = false;

}else{

if(@mkdir($target,0777)){

$gocover = true;

}else{

$errors .= str_replace("--replace--",$target,$T_lang['func'][2]);

$gocover = false;

}

if($gocover){

$handle = opendir($source);

while($file = readdir($handle)){

clearstatcache();

if(substr($file,-1)=="."||substr($file,-2)=="..") continue;

if(is_dir($source."/".$file)){

$errors .= copypath($source."/".$file,$target."/".$file,$uncover);

}else{

$gocopy = true;

if(file_exists($target."/".$file)){

if($uncover){

$gocopy = false;

}else{

if(@unlink($target."/".$file)){

$gocopy = true;

}else{

$gocopy = false;

}

if($gocopy){

if(@copy($source."/".$file,$target."/".$file)){

$errors .= "";

}else{

$errors .= str_replace("--replace--",$source."/".$file,$T_lang['func'][3]);

}

}else{

$errors .= str_replace("--replace--",$target."/".$file,$T_lang['func'][4]);

}

closedir($handle);

}

if($errors){

return $errors;

}else{

return "";

}

function movepath($source,$target,$uncover=true){//移动整个目录默认不允许覆盖

global $T_lang;

if(is_dir($target)){

if($uncover){

$errors .= str_replace("--replace--",$target,$T_lang['func'][0]);

$gocover = false;

}else{

$gocover = true;

}

}else{

if(matchpath($target,$source)){//检测目录$source是否包含于$target

$errors .= str_replace("--replace--",$source,$T_lang['func'][5]);

$gocover = false;

}else{

if(@mkdir($target,0777)){

$gocover = true;

}else{

$errors .= str_replace("--replace--",$target,$T_lang['func'][2]);

$gocover = false;

}

if($gocover){

$handle = opendir($source);

while($file = readdir($handle)){

clearstatcache();

if(substr($file,-1)=="."||substr($file,-2)=="..") continue;

if(!is_dir($source."/".$file)){

$gocopy = true;

if(file_exists($target."/".$file)){

if($uncover){

$gocopy = false;

}else{

$gocopy = true;

}

if($gocopy){

if(@copy($source."/".$file,$target."/".$file)){

unlink($source."/".$file);

}else{

$errors .= str_replace("--replace--",$source."/".$file,$T_lang['func'][3]);

}

}else{

$errors .= str_replace("--replace--",$target."/".$file,$T_lang['func'][6]);

}

}else{

$errors .= movepath($source."/".$file,$target."/".$file,$uncover);

}

closedir($handle);

}

if($errors){

return $errors;

}else{

if(@rmdir($source."/".$file)){

return "";

}else{

$errors .= str_replace("--replace--",$source,$T_lang['func'][7]);

}

function delpath($source){//删除整个目录

global $T_lang,$T_Recycled;

$handle = opendir($source);

while($file = readdir($handle)){

clearstatcache();

if(substr($file,-1)=="."||substr($file,-2)=="..") continue;

if(is_dir($source."/".$file)){

$errors .= delpath($source."/".$file);

}else{

if(@unlink($source."/".$file)){

}else{

$errors .= str_replace("--replace--",$source,$T_lang['func'][7]);

}

closedir($handle);

if($errors){

$errors .= str_replace("--replace--",$source,$T_lang['func'][8]);

return $errors;

}else{

if($source==$T_Recycled){//清空回收站时这个判断条件用的上

return "";

}else{

if(@rmdir($source)){

return "";

}else{

$errors .= str_replace("--replace--",$source,$T_lang['func'][8]);

return $errors;

}

function limitname($title,$limitlength =13){//限制标题长度

$length = strlen($title);

if($length>$limitlength){

$gbk = 0;

for($i=0;$i<$limitlength-1;$i++){

$temp = substr($title,$i,1);

if(ord($temp)>127) $gbk +=1;

}

if($gbk%2){

$title = substr($title,0,$limitlength)."...";

}else{

$title = substr($title,0,$limitlength-1)."...";

}

return $title;

}

function fileext($filename){

return trim(substr(strrchr($filename, '.'), 1));

}

function checkpath($path){//检查path合法和合格性

$path = eregi_replace("root",".",$path);

if($path=="."||ereg("^(\.\/).*[^\.\/]$",$path)){

if(eregi("\.\/(.*)?(\.\.\/)+.",$path)){

return false;

}else{

if(is_dir($path)){

return $path;

}else{

return false;

}

}else{

return false;

}

function historypath(){//历史路径

global $path,$T_rlength,$T_images,$T_main,$T_Recycled;

$ruote = explode("/",$path);

$num = count($ruote);

if($num<=1){

return false;

}else{

if($num-1>$T_rlength){

$i = $num-$T_rlength;

}else{

$i = 1;

}

for(;$i<=$num-1;$i++){

$rs .= "<img src={$T_images}/direct.gif align=absmiddle><a href=\"{$T_main}?path=";

$single = ".";

for($j=1;$j<=$i;$j++){

$single .= "/".$ruote[$j];

}

$rs .= urlencode($single)."\"><img src=\"";

if($single==$T_Recycled){

$rs .= $T_images."/Recycled.gif";

}else{

$rs .= $T_images."/folder.gif";

}

$rs .= "\" height=\"50\" width=\"50\" align=absmiddle>".limitname($ruote[$i])."</a>";

}

return $rs;

}

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