/// <summary>
/// Lua reader to invoke the reader
/// </summary>
IntPtr InvokeManagementReader(IntPtr state, IntPtr ud, ref UInt32 sz)
{
if (_LastReadBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(_LastReadBuffer);
_LastReadBuffer = IntPtr.Zero;
_LastReadBufferSize = 0;
}
LuaState ls = LuaState.FindState(state);
if (ManagedReader != null && ls != null)
{
var res = ManagedReader(ls, UserDataRef.GetData(ud));
if (res != null && res.Length > 0)
{
sz = (UInt32)res.Length;
_LastReadBuffer = Marshal.AllocHGlobal((int)sz);
_LastReadBufferSize = sz;
Marshal.Copy(res, 0, _LastReadBuffer, (int)sz);
return(_LastReadBuffer);
}
}
sz = 0;
return(IntPtr.Zero);
}
/// <summary>
/// Lua writer to invoke the Writer
/// </summary>
int InvokeManagementWriter(IntPtr state, IntPtr ptr, UInt32 sz, IntPtr ud)
{
LuaState ls = LuaState.FindState(state);
if (ManagedWriter != null && ls != null)
{
Byte[] buffer = ptr != IntPtr.Zero ? new Byte[sz] : null;
if (ptr != IntPtr.Zero)
{
Marshal.Copy(ptr, buffer, 0, (int)sz);
}
var res = ManagedWriter(ls, buffer, UserDataRef.GetData(ud));
buffer = null;
return(res);
}
return(0);
}
/// <summary>
/// Readder to invoke the lua reader
/// </summary>
Byte[] InvokeUnmanagedReader(ILuaState state, Object ud)
{
LuaState ls = state as LuaState;
if (UnmanagedReader != null && ls != null)
{
UInt32 sz = 0;
var res = UnmanagedReader(ls.NativeState, UserDataRef.GetRef(ud), ref sz);
if (sz <= 0 || res == IntPtr.Zero)
{
return(null);
}
Byte[] buffer = new Byte[sz];
Marshal.Copy(res, buffer, 0, (int)sz);
return(buffer);
}
return(null);
}
/// <summary>
/// Reader to invoke the lua Writer
/// </summary>
int InvokeUnmanagedWriter(ILuaState state, Byte[] p, Object ud)
{
LuaState ls = state as LuaState;
if (UnmanagedWriter != null && ls != null)
{
int res = 0;
if (p != null)
{
var ptr = Marshal.AllocHGlobal(p.Length);
Marshal.Copy(p, 0, ptr, p.Length);
res = UnmanagedWriter(ls.NativeState, ptr, (UInt32)p.Length, UserDataRef.GetRef(ud));
Marshal.FreeHGlobal(ptr);
}
else
{
res = UnmanagedWriter(ls.NativeState, IntPtr.Zero, 0, UserDataRef.GetRef(ud));
}
return(res);
}
return(0);
}
