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using System;
using System.Runtime.InteropServices;
using System.Reflection.Emit;
using DBus;
namespace DBus.DBusType
{
/// <summary>
/// A named byte array, used for custom types.
/// </summary>
public class Custom : IDBusType
{
public const char Code = 'c';
private DBus.Custom val;
private Custom()
{
}
public Custom(DBus.Custom val, Service service)
{
this.val = val;
}
public Custom(IntPtr iter, Service service)
{
string name;
IntPtr value;
int len;
if (!dbus_message_iter_get_custom(iter, out name, out value, out len)) {
throw new ApplicationException("Failed to get CUSTOM argument.");
}
this.val.Name = name;
this.val.Data = new byte[len];
Marshal.Copy(value, this.val.Data, 0, len);
}
public void Append(IntPtr iter)
{
IntPtr data = Marshal.AllocCoTaskMem(this.val.Data.Length);
try {
Marshal.Copy(this.val.Data, 0, data, this.val.Data.Length);
if (!dbus_message_iter_append_custom(iter, this.val.Name, data, this.val.Data.Length)) {
throw new ApplicationException("Failed to append CUSTOM argument:" + val);
}
} finally {
Marshal.FreeCoTaskMem(data);
}
}
public static bool Suits(System.Type type)
{
switch (type.ToString()) {
case "DBus.Custom":
case "DBus.Custom&":
return true;
}
return false;
}
public static void EmitMarshalIn(ILGenerator generator, Type type)
{
if (type.IsByRef) {
generator.Emit(OpCodes.Ldobj, type);
}
}
public static void EmitMarshalOut(ILGenerator generator, Type type, bool isReturn)
{
generator.Emit(OpCodes.Unbox, type);
generator.Emit(OpCodes.Ldobj, type);
if (!isReturn) {
generator.Emit(OpCodes.Stobj, type);
}
}
public object Get()
{
return this.val;
}
public object Get(System.Type type)
{
switch (type.ToString()) {
case "DBus.Custom":
case "DBus.Custom&":
return this.val;
default:
throw new ArgumentException("Cannot cast DBus.Type.Custom to type '" + type.ToString() + "'");
}
}
[DllImport("dbus-1")]
private extern static bool dbus_message_iter_get_custom(IntPtr iter,
out string name,
out IntPtr value,
out int len);
[DllImport("dbus-1")]
private extern static bool dbus_message_iter_append_custom(IntPtr iter,
string name,
IntPtr data,
int len);
}
}
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