public bool Insert(NxdObject nxdObject, NxdDirectory directory)
{
if (!UpdateDirectoryMetaData(directory))
{
return false;
}
SeekTo(directory);
fileStream.Seek(142 + directory.Size - nxdObject.SizeTotal, SeekOrigin.Current);
var currentPosition = fileStream.Position;
if (fileStream.Position < fileStream.Length)
{
var afterBytes = streamReader.ReadBytes((int)(fileStream.Length - fileStream.Position));
fileStream.Seek(currentPosition + nxdObject.SizeTotal, SeekOrigin.Begin);
streamWriter.Write(afterBytes);
}
fileStream.Seek(currentPosition, SeekOrigin.Begin);
NxdConvert.SerializeToStream(fileStream, nxdObject);
return true;
}
public void Remove(NxdObject nxdObject)
{
if (nxdObject is NxdDirectory)
{
Directories.Remove((NxdDirectory)nxdObject);
}
else
{
Contents.Remove(nxdObject);
}
}
public void Add(NxdObject nxdObject)
{
if (nxdObject is NxdDirectory)
{
Directories.Add((NxdDirectory) nxdObject);
}
else
{
Contents.Add(nxdObject);
}
}
public static NxdObject Deserialize(byte[] bytes)
{
Stream stream = new MemoryStream(bytes);
BinaryReader reader = new BinaryReader(stream);
var id = reader.ReadInt32();
var name = Encoding.Default.GetString(reader.ReadBytes(128).ToArray()).TrimEnd('\0');
var type = reader.ReadInt16();
var date = reader.ReadInt32();
var size = reader.ReadInt32();
NxdObject nxdObject = null;
switch (type)
{
case NxdTypes.Directory:
NxdDirectory nxdDirectory = new NxdDirectory();
var pos = stream.Position;
while (stream.Position - pos < size)
{
stream.Seek(138, SeekOrigin.Current);
var objSize = reader.ReadInt32();
stream.Seek(-142, SeekOrigin.Current);
NxdObject obj = NxdConvert.Deserialize(reader.ReadBytes(objSize + 142));
nxdDirectory.Contents.Add(obj);
}
nxdObject = nxdDirectory;
break;
default:
nxdObject = new NxdObject();
break;
}
nxdObject.Id = id;
nxdObject.Name = name;
nxdObject.Type = type;
nxdObject.Date = date;
nxdObject.Size = size;
NxdObject.NextId = id + 1;
return nxdObject;
}
public static void SerializeToStream(Stream stream, NxdObject nxdObject)
{
BinaryWriter writer = new BinaryWriter(stream);
writer.Write(nxdObject.Id);
var nameBytes = new byte[128];
for (var i = 0; i < Math.Min(nxdObject.Name.Length, 128); i++)
{
nameBytes[i] = (byte)nxdObject.Name[i];
}
writer.Write(nameBytes);
writer.Write(nxdObject.Type);
writer.Write(nxdObject.Date);
writer.Write(nxdObject.Size);
if (nxdObject.Data != null)
{
writer.Write(nxdObject.Data);
}
}
private async void Window_Drop(object sender, DragEventArgs e)
{
await Task.Run(() =>
{
var filenames = (string[]) e.Data.GetData(DataFormats.FileDrop);
foreach (var filename in filenames)
{
NxdObject nxdObject = new NxdObject
{
Name = Path.GetFileName(filename),
Data = File.ReadAllBytes(filename)
};
nxdObject.Size = nxdObject.Data.Length;
selectedDirectory.Add(nxdObject);
currentFile.Insert(nxdObject, selectedDirectory);
nxdObject.Data = null;
}
});
RefreshDataGrid();
}
public static byte[] Serialize(NxdObject nxdObject)
{
throw new NotImplementedException();
}
private bool SeekTo(NxdObject nxdObject)
{
var lastPosition = fileStream.Position;
fileStream.Seek(3, SeekOrigin.Begin);
while (fileStream.Position < fileStream.Length)
{
var id = streamReader.ReadInt32();
if (nxdObject.Id == id)
{
fileStream.Seek(-4, SeekOrigin.Current);
return true;
}
fileStream.Seek(134, SeekOrigin.Current);
var size = streamReader.ReadInt32();
fileStream.Seek(size, SeekOrigin.Current);
}
fileStream.Seek(lastPosition, SeekOrigin.Begin);
return false;
}
public bool Remove(NxdObject nxdObject, NxdDirectory directory)
{
if (!UpdateDirectoryMetaData(directory))
{
return false;
}
if (!SeekTo(nxdObject))
{
return false;
}
var lastPosition = fileStream.Position;
fileStream.Seek(138, SeekOrigin.Current);
fileStream.Seek(streamReader.ReadInt32(), SeekOrigin.Current);
var afterBytes = streamReader.ReadBytes((int) (fileStream.Length - fileStream.Position));
fileStream.Seek(lastPosition, SeekOrigin.Begin);
streamWriter.Write(afterBytes);
fileStream.SetLength(fileStream.Position);
return true;
}
