internal Stream GetFolderStream(Stream stream, CFolder folder, IPasswordProvider pw)
{
int packStreamIndex = folder.FirstPackStreamId;
long folderStartPackPos = GetFolderStreamPos(folder, 0);
List <long> packSizes = new List <long>();
for (int j = 0; j < folder.PackStreams.Count; j++)
{
packSizes.Add(PackSizes[packStreamIndex + j]);
}
return(DecoderStreamHelper.CreateDecoderStream(stream, folderStartPackPos, packSizes.ToArray(), folder, pw));
}
internal long GetFolderFullPackSize(int folderIndex)
{
int packStreamIndex = Folders[folderIndex].FirstPackStreamId;
CFolder folder = Folders[folderIndex];
long size = 0;
for (int i = 0; i < folder.PackStreams.Count; i++)
{
size += PackSizes[packStreamIndex + i];
}
return(size);
}
internal long GetFolderStreamPos(CFolder folder, int indexInFolder)
{
int index = folder.FirstPackStreamId + indexInFolder;
return(DataStartPosition + PackStreamStartPositions[index]);
}