internal ZlibZipReader(string path)
{
string resolvedPath = ZipLib.ResolvePath(path);
if (!File.Exists(resolvedPath))
{
throw new FileNotFoundException("File does not exist:" + path);
}
this.handle = ZipLib.unzOpen(resolvedPath);
if (handle == IntPtr.Zero)
{
throw new ZipException("Unable to open ZIP file:" + path);
}
}
public override void ExtractOfficeDocument(string zipFileName, string directory)
{
IntPtr zhandle = ZipLib.unzOpen(zipFileName);
FileStream fs = new FileStream(zipFileName, FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(fs);
int i = 0;
int flag = 0;
int flag2 = 0;
int count = 1;
try
{
while (br.BaseStream.Position < br.BaseStream.Length)
{
if (br.ReadByte() == 0x50)
{
if (br.ReadByte() == 0x4b)
{
if (br.ReadByte() == 0x03)
{
if (br.ReadByte() == 0x04)
{
br.BaseStream.Position += 22;
int filenameLength = br.ReadInt16();
br.BaseStream.Position += 2;
byte[] buffer = new byte[filenameLength];
br.BaseStream.Read(buffer, 0, filenameLength);
br.BaseStream.Position -= (26 + filenameLength);
string fullFileName = directory + ZipLib.ResolvePath(Encoding.GetEncoding("UTF-8").GetString(buffer));
DirectoryInfo dir = new DirectoryInfo(fullFileName);
if (fullFileName.Contains("/"))
{
string tempdir = "";
while (tempdir != dir.Root.FullName)
{
tempdir = dir.Parent.FullName;
dir = new DirectoryInfo(dir.Parent.FullName);
if (!Directory.Exists(tempdir))
{
Directory.CreateDirectory(tempdir);
}
}
}
FileStream writeFile = File.Create(fullFileName);
if (i < count)
{
try
{
i++;
if (flag == 0)
{
ZipLib.unzGoToFirstFile(zhandle);
flag = 1;
}
else
{
int fir = ZipLib.unzGoToNextFile(zhandle);
}
ZipEntryInfo zipentryInfo;
ZipLib.unzGetCurrentFileInfo(zhandle, out zipentryInfo, null, 0, null, 0, null, 0);
ZipLib.unzOpenCurrentFile(zhandle);
ZipFileInfo zipfileinfo;
ZipLib.unzGetGlobalInfo(zhandle, out zipfileinfo);
if (flag2 == 0)
{
count = (int)zipfileinfo.EntryCount;
flag2 = 1;
}
byte[] buffer2 = new byte[zipentryInfo.UncompressedSize];
ZipLib.unzReadCurrentFile(zhandle, buffer2, (uint)zipentryInfo.UncompressedSize);
writeFile.Write(buffer2, 0, (int)zipentryInfo.UncompressedSize);
br.BaseStream.Position += zipentryInfo.CompressedSize;
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (writeFile != null)
{
writeFile.Close();
}
if (ZipLib.unzCloseCurrentFile(zhandle) != 0)
{
ZipLib.unzCloseCurrentFile(zhandle);
}
}
}
}
}
}
}
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (fs != null)
{
fs.Close();
}
if (br != null)
{
br.Close();
}
}
}