private FileV8Tree GetDescriptionTree(FileV8Reader fileV8Reader, V8FileSystem fileSystem, string folderName, string fileName)
{
if (String.IsNullOrEmpty(folderName))
{
var file = fileV8Reader.FindFileSystemReferenceByFileHeaderName(fileSystem.References, fileName);
if (file == null)
{
RaiseFileNotExistsException(fileName);
}
using (MemoryStream stream = new MemoryStream())
{
fileV8Reader.ReadV8FileRawData(stream, file);
return(fileV8Reader.ParseV8File(stream, fileName));
}
}
else
{
var folder = fileV8Reader.FindFileSystemReferenceByFileHeaderName(fileSystem.References, folderName);
if (folder == null)
{
RaiseFileNotExistsException(folderName);
}
using (MemoryStream stream = new MemoryStream())
{
fileV8Reader.ReadV8FileRawData(stream, folder);
if (fileV8Reader.IsV8FileSystem(stream))
{
stream.Seek(0, SeekOrigin.Begin);
using (FileV8Reader tmpV8Reader = new FileV8Reader(new BinaryReader(stream, Encoding.Default, true)))
{
folder.Folder = tmpV8Reader.ReadV8FileSystem(false);
return(GetDescriptionTree(tmpV8Reader, folder.Folder, String.Empty, fileName));
}
}
else
{
RaiseItIsNotV8FolderException(folderName);
}
}
}
return(null);
}