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using System;
using System.Runtime.InteropServices;
using System.Reflection.Emit;
using DBus;
namespace DBus.DBusType
{
/// <summary>
/// A string.
/// </summary>
public class String : IDBusType
{
public const char Code = 's';
private string val;
private String()
{
}
public String(string val, Service service)
{
this.val = val;
}
public String(IntPtr iter, Service service)
{
IntPtr raw;
dbus_message_iter_get_basic (iter, out raw);
this.val = Marshal.PtrToStringAnsi (raw);
}
public void Append(IntPtr iter)
{
IntPtr marshalVal = Marshal.StringToHGlobalAnsi (val);
bool success = dbus_message_iter_append_basic (iter, (int) Code, ref marshalVal);
Marshal.FreeHGlobal (marshalVal);
if (!success)
throw new ApplicationException("Failed to append STRING argument:" + val);
}
public static bool Suits(System.Type type)
{
switch (type.ToString()) {
case "System.String":
case "System.String&":
return true;
}
return false;
}
public static void EmitMarshalIn(ILGenerator generator, Type type)
{
if (type.IsByRef) {
generator.Emit(OpCodes.Ldind_Ref);
}
}
public static void EmitMarshalOut(ILGenerator generator, Type type, bool isReturn)
{
generator.Emit(OpCodes.Castclass, type);
if (!isReturn) {
generator.Emit(OpCodes.Stind_Ref);
}
}
public object Get()
{
return this.val;
}
public object Get(System.Type type)
{
switch (type.ToString())
{
case "System.String":
case "System.String&":
return this.val;
default:
throw new ArgumentException("Cannot cast DBus.Type.String to type '" + type.ToString() + "'");
}
}
[DllImport("dbus-1")]
private extern static void dbus_message_iter_get_basic (IntPtr iter, out IntPtr value);
[DllImport("dbus-1")]
private extern static bool dbus_message_iter_append_basic (IntPtr iter, int type, ref IntPtr value);
}
}
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