public static void Create(string path, ContentTree tree, PostprocessFileCallback postprocessFileCallback = null)
{
using (MemoryStream tableStream = new MemoryStream())
using (MemoryStream dataStream = new MemoryStream()) {
WriteContentTreeSection(tree.Root, tableStream, dataStream, postprocessFileCallback);
Stream stream;
if (DualityApp.ExecContext == DualityApp.ExecutionContext.Game ||
DualityApp.ExecContext == DualityApp.ExecutionContext.Server)
{
stream = DualityApp.SystemBackend.FileSystem.CreateFile(path);
}
else
{
stream = File.Create(path);
}
using (stream) {
using (BinaryWriter w = new BinaryWriter(stream, Encoding.UTF8, true)) {
w.Write((uint)0x5A616544u); // Signature
w.Write((byte)1); // Version
w.Write((uint)tableStream.Position);
}
tableStream.Position = 0;
tableStream.CopyTo(stream);
dataStream.Position = 0;
dataStream.CopyTo(stream);
}
}
}
private static void WriteContentTreeSection(ContentTree.Node node, Stream tableStream, Stream dataStream, PostprocessFileCallback postprocessFileCallback)
{
using (BinaryWriter w = new BinaryWriter(tableStream, Encoding.UTF8, true)) {
ResourceFlags flags = 0;
if (node.Children.Count > 0)
{
flags |= ResourceFlags.HasChildren;
}
if (node.Source != null)
{
flags |= ResourceFlags.HasResource;
flags &= ~ResourceFlags.External;
}
Stream overrideStream = null;
if (postprocessFileCallback != null)
{
postprocessFileCallback(node, ref flags, ref overrideStream);
}
try {
w.Write((byte)flags);
w.WriteAsciiString(node.Name);
if ((flags & ResourceFlags.HasChildren) != 0)
{
w.Write((ushort)node.Children.Count);
}
if ((flags & ResourceFlags.HasResource) != 0)
{
if ((flags & ResourceFlags.External) != 0)
{
if (overrideStream != null)
{
throw new InvalidOperationException("Cannot use overrideStream with ResourceFlags.External");
}
FileResourceSource source = node.Source as FileResourceSource;
if (source == null)
{
throw new InvalidOperationException("Specified resource must be saved as file");
}
w.WriteAsciiString(source.Path);
w.Write((uint)source.Offset);
w.Write((uint)source.Size);
}
else
{
long offset = dataStream.Position;
if (overrideStream != null)
{
if ((flags & ResourceFlags.Compressed) != 0)
{
using (DeflateStream ds = new DeflateStream(dataStream, CompressionLevel.Optimal, true)) {
overrideStream.CopyTo(ds);
}
}
else
{
overrideStream.CopyTo(dataStream);
}
}
else
{
using (Stream stream = (flags & ResourceFlags.Compressed) != 0
? node.Source.GetCompressedStream()
: node.Source.GetUncompressedStream()) {
stream.CopyTo(dataStream);
}
}
long size = (dataStream.Position - offset);
w.Write((uint)offset);
w.Write((uint)size);
}
}
} finally {
if (overrideStream != null)
{
overrideStream.Dispose();
}
}
}
foreach (ContentTree.Node children in node.Children)
{
WriteContentTreeSection(children, tableStream, dataStream, postprocessFileCallback);
}
}
