www.gusucode.com > 电影影院门户论坛源码程序网站 > 整站安装/整站源码/source/class/class_zip.php
<?php
/**
* [Discuz!] (C)2001-2099 Comsenz Inc.
* This is NOT a freeware, use is subject to license terms
*
* $Id: class_zip.php 27449 2012-02-01 05:32:35Z zhangguosheng $
*/
if(!defined('IN_DISCUZ')) {
exit('Access Denied');
}
class zipfile {
var $datasec = array();
var $ctrl_dir = array();
var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
var $old_offset = 0;
function unix2DosTime($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;
$timearray['seconds'] = 0;
} // end if
return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |
($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
} // end of the 'unix2DosTime()' method
function addFile($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
$unc_len = strlen($data);
$crc = crc32($data);
$zdata = gzcompress($data);
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
$c_len = strlen($zdata);
$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;
$fr .= $zdata;
$this -> datasec[] = $fr;
$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
$this -> old_offset += strlen($fr);
$cdrec .= $name;
$this -> ctrl_dir[] = $cdrec;
} // end of the 'addFile()' method
function file() {
$data = implode('', $this -> datasec);
$ctrldir = implode('', $this -> ctrl_dir);
return
$data .
$ctrldir .
$this -> eof_ctrl_dir .
pack('v', sizeof($this -> ctrl_dir)) . // total # of entries "on this disk"
pack('v', sizeof($this -> ctrl_dir)) . // total # of entries overall
pack('V', strlen($ctrldir)) . // size of central dir
pack('V', strlen($data)) . // offset to start of central dir
"\x00\x00"; // .zip file comment length
} // end of the 'file()' method
} // end of the 'zipfile' class
class SimpleUnzip {
var $Comment = '';
var $Entries = array();
var $Name = '';
var $Size = 0;
var $Time = 0;
function SimpleUnzip($in_FileName = '') {
if($in_FileName !== '') {
SimpleUnzip::ReadFile($in_FileName);
}
} // end of the 'SimpleUnzip' constructor
function Count() {
return count($this->Entries);
} // end of the 'Count()' method
function GetData($in_Index) {
return $this->Entries[$in_Index]->Data;
} // end of the 'GetData()' method
function GetEntry($in_Index) {
return $this->Entries[$in_Index];
} // end of the 'GetEntry()' method
function GetError($in_Index) {
return $this->Entries[$in_Index]->Error;
} // end of the 'GetError()' method
function GetErrorMsg($in_Index) {
return $this->Entries[$in_Index]->ErrorMsg;
} // end of the 'GetErrorMsg()' method
function GetName($in_Index) {
return $this->Entries[$in_Index]->Name;
} // end of the 'GetName()' method
function GetPath($in_Index) {
return $this->Entries[$in_Index]->Path;
} // end of the 'GetPath()' method
function GetTime($in_Index) {
return $this->Entries[$in_Index]->Time;
} // end of the 'GetTime()' method
function ReadFile($in_FileName) {
$this->Entries = array();
$this->Name = $in_FileName;
$this->Time = filemtime($in_FileName);
$this->Size = filesize($in_FileName);
$oF = fopen($in_FileName, 'rb');
$vZ = fread($oF, $this->Size);
fclose($oF);
$aE = explode("\x50\x4b\x05\x06", $vZ);
$aP = unpack('x16/v1CL', $aE[1]);
$this->Comment = substr($aE[1], 18, $aP['CL']);
$this->Comment = strtr($this->Comment, array("\r\n" => "\n",
"\r" => "\n"));
$aE = explode("\x50\x4b\x01\x02", $vZ);
$aE = explode("\x50\x4b\x03\x04", $aE[0]);
array_shift($aE);
foreach($aE as $vZ) {
$aI = array();
$aI['E'] = 0;
$aI['EM'] = '';
$aP = unpack('v1VN/v1GPF/v1CM/v1FT/v1FD/V1CRC/V1CS/V1UCS/v1FNL', $vZ);
$bE = ($aP['GPF'] && 0x0001) ? TRUE : FALSE;
$nF = $aP['FNL'];
if($aP['GPF'] & 0x0008) {
$aP1 = unpack('V1CRC/V1CS/V1UCS', substr($vZ, -12));
$aP['CRC'] = $aP1['CRC'];
$aP['CS'] = $aP1['CS'];
$aP['UCS'] = $aP1['UCS'];
$vZ = substr($vZ, 0, -12);
}
$aI['N'] = substr($vZ, 26, $nF);
if(substr($aI['N'], -1) == '/') {
continue;
}
$aI['P'] = dirname($aI['N']);
$aI['P'] = $aI['P'] == '.' ? '' : $aI['P'];
$aI['N'] = basename($aI['N']);
$vZ = substr($vZ, 26 + $nF);
if(strlen($vZ) != $aP['CS']) {
$aI['E'] = 1;
$aI['EM'] = 'Compressed size is not equal with the value in header information.';
} else {
if($bE) {
$aI['E'] = 5;
$aI['EM'] = 'File is encrypted, which is not supported from this class.';
} else {
switch($aP['CM']) {
case 0: // Stored
break;
case 8: // Deflated
$vZ = gzinflate($vZ);
break;
case 12: // BZIP2
if(! extension_loaded('bz2')) {
if(strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
@dl('php_bz2.dll');
} else {
@dl('bz2.so');
}
}
if(extension_loaded('bz2')) {
$vZ = bzdecompress($vZ);
} else {
$aI['E'] = 7;
$aI['EM'] = "PHP BZIP2 extension not available.";
}
break;
default:
$aI['E'] = 6;
$aI['EM'] = "De-/Compression method {$aP['CM']} is not supported.";
}
if(! $aI['E']) {
if($vZ === FALSE) {
$aI['E'] = 2;
$aI['EM'] = 'Decompression of data failed.';
} else {
if(strlen($vZ) != $aP['UCS']) {
$aI['E'] = 3;
$aI['EM'] = 'Uncompressed size is not equal with the value in header information.';
} else {
if(crc32($vZ) != $aP['CRC']) {
$aI['E'] = 4;
$aI['EM'] = 'CRC32 checksum is not equal with the value in header information.';
}
}
}
}
}
}
$aI['D'] = $vZ;
$aI['T'] = mktime(($aP['FT'] & 0xf800) >> 11,
($aP['FT'] & 0x07e0) >> 5,
($aP['FT'] & 0x001f) << 1,
($aP['FD'] & 0x01e0) >> 5,
($aP['FD'] & 0x001f),
(($aP['FD'] & 0xfe00) >> 9) + 1980);
$this->Entries[] = new SimpleUnzipEntry($aI);
} // end for each entries
return $this->Entries;
} // end of the 'ReadFile()' method
} // end of the 'SimpleUnzip' class
class SimpleUnzipEntry {
var $Data = '';
var $Error = 0;
var $ErrorMsg = '';
var $Name = '';
var $Path = '';
var $Time = 0;
function SimpleUnzipEntry($in_Entry) {
$this->Data = $in_Entry['D'];
$this->Error = $in_Entry['E'];
$this->ErrorMsg = $in_Entry['EM'];
$this->Name = $in_Entry['N'];
$this->Path = $in_Entry['P'];
$this->Time = $in_Entry['T'];
} // end of the 'SimpleUnzipEntry' constructor
} // end of the 'SimpleUnzipEntry' class
?>