/// <summary>
///
/// </summary>
/// <param name="Stream"></param>
public void SaveToStream(Stream Stream)
{
ZipLocalFile ZipFile;
ZipCentralDirectory ZipDir;
ZipFileHeader ZipFileHeader;
string FileName;
long CentralStartPos, CentralEndPos;
for (int i = 0; i < FFileList.Count; i++)
{
ZipFile = new ZipLocalFile();
ZipFile.FileData = new MemoryStream();
FileName = FFileList[i].Replace(FRootFolder + "\\", "");
ZipFile.LocalFileHeader.FileName = FileName;
using (FileStream file = new FileStream(FFileList[i], FileMode.Open))
{
if (file.Length > 128)
{
using (DeflateStream deflate = new DeflateStream(ZipFile.FileData, CompressionMode.Compress, true))
ZipFile.LocalFileHeader.Crc32 = CopyStream(file, deflate);
ZipFile.LocalFileHeader.CompressionMethod = 8;
}
else
{
ZipFile.LocalFileHeader.Crc32 = CopyStream(file, ZipFile.FileData);
ZipFile.LocalFileHeader.CompressionMethod = 0;
}
ZipFile.LocalFileHeader.CompressedSize = (uint)ZipFile.FileData.Length;
ZipFile.LocalFileHeader.UnCompressedSize = (uint)file.Length;
}
ZipFile.Offset = (uint)Stream.Position;
ZipFile.LocalFileHeader.LastModFileDate = GetDosDateTime(File.GetLastWriteTime(FFileList[i]));
ZipFile.SaveToStream(Stream);
ZipFile.FileData = null;
FFileObjects.Add(ZipFile);
}
CentralStartPos = Stream.Position;
for (int i = 0; i < FFileObjects.Count; i++)
{
ZipFile = FFileObjects[i];
ZipFileHeader = new ZipFileHeader();
ZipFileHeader.CompressionMethod = ZipFile.LocalFileHeader.CompressionMethod;
ZipFileHeader.LastModFileDate = ZipFile.LocalFileHeader.LastModFileDate;
ZipFileHeader.GeneralPurpose = ZipFile.LocalFileHeader.GeneralPurpose;
ZipFileHeader.Crc32 = ZipFile.LocalFileHeader.Crc32;
ZipFileHeader.CompressedSize = ZipFile.LocalFileHeader.CompressedSize;
ZipFileHeader.UnCompressedSize = ZipFile.LocalFileHeader.UnCompressedSize;
ZipFileHeader.RelativeOffsetLocalHeader = ZipFile.Offset;
ZipFileHeader.FileName = ZipFile.LocalFileHeader.FileName;
ZipFileHeader.SaveToStream(Stream);
}
CentralEndPos = Stream.Position;
ZipDir = new ZipCentralDirectory();
ZipDir.TotalOfEntriesCentralDirOnDisk = (ushort)FFileList.Count;
ZipDir.TotalOfEntriesCentralDir = (ushort)FFileList.Count;
ZipDir.SizeOfCentralDir = (uint)(CentralEndPos - CentralStartPos);
ZipDir.OffsetStartingDiskDir = (uint)CentralStartPos;
ZipDir.SaveToStream(Stream);
}
/// <summary>
/// Creates the zip and writes it to rhe Stream
/// </summary>
/// <param name="Stream"></param>
public void SaveToStream(Stream Stream)
{
ZipLocalFile ZipFile;
ZipCentralDirectory ZipDir;
ZipFileHeader ZipFileHeader;
long CentralStartPos, CentralEndPos;
for (int i = 0; i < fileList.Count; i++)
{
ZipFile = new ZipLocalFile();
using (ZipFile.FileData = new MemoryStream())
{
if (fileList[i].Disk)
{
ZipFile.LocalFileHeader.FileName = fileList[i].Name.Replace(rootFolder + Path.DirectorySeparatorChar, "");
using (FileStream file = new FileStream(fileList[i].Name, FileMode.Open))
AddStreamToZip(file, ZipFile);
}
else
{
ZipFile.LocalFileHeader.FileName = fileList[i].Name;
fileList[i].Stream.Position = 0;
AddStreamToZip(fileList[i].Stream, ZipFile);
}
ZipFile.Offset = (uint)Stream.Position;
ZipFile.LocalFileHeader.LastModFileDate = fileList[i].FileDateTime;
ZipFile.SaveToStream(Stream);
}
ZipFile.FileData = null;
fileObjects.Add(ZipFile);
}
CentralStartPos = Stream.Position;
for (int i = 0; i < fileObjects.Count; i++)
{
ZipFile = fileObjects[i];
ZipFileHeader = new ZipFileHeader();
ZipFileHeader.CompressionMethod = ZipFile.LocalFileHeader.CompressionMethod;
ZipFileHeader.LastModFileDate = ZipFile.LocalFileHeader.LastModFileDate;
ZipFileHeader.GeneralPurpose = ZipFile.LocalFileHeader.GeneralPurpose;
ZipFileHeader.Crc32 = ZipFile.LocalFileHeader.Crc32;
ZipFileHeader.CompressedSize = ZipFile.LocalFileHeader.CompressedSize;
ZipFileHeader.UnCompressedSize = ZipFile.LocalFileHeader.UnCompressedSize;
ZipFileHeader.RelativeOffsetLocalHeader = ZipFile.Offset;
ZipFileHeader.FileName = ZipFile.LocalFileHeader.FileName;
ZipFileHeader.SaveToStream(Stream);
}
CentralEndPos = Stream.Position;
ZipDir = new ZipCentralDirectory();
ZipDir.TotalOfEntriesCentralDirOnDisk = (ushort)fileList.Count;
ZipDir.TotalOfEntriesCentralDir = (ushort)fileList.Count;
ZipDir.SizeOfCentralDir = (uint)(CentralEndPos - CentralStartPos);
ZipDir.OffsetStartingDiskDir = (uint)CentralStartPos;
ZipDir.SaveToStream(Stream);
}
private void AddStreamToZip(Stream stream, ZipLocalFile ZipFile)
{
if (stream.Length > 128)
{
using (DeflateStream deflate = new DeflateStream(ZipFile.FileData, CompressionMode.Compress, true))
ZipFile.LocalFileHeader.Crc32 = CopyStream(stream, deflate);
ZipFile.LocalFileHeader.CompressionMethod = 8;
}
else
{
ZipFile.LocalFileHeader.Crc32 = CopyStream(stream, ZipFile.FileData);
ZipFile.LocalFileHeader.CompressionMethod = 0;
}
ZipFile.LocalFileHeader.CompressedSize = (uint)ZipFile.FileData.Length;
ZipFile.LocalFileHeader.UnCompressedSize = (uint)stream.Length;
}