private static int Parse_Fields(PacketBase obj, byte[] buffer, int offset, int size)
{
int offsetLimit = offset + size;
if (offsetLimit > buffer.Length)
throw new rfidInvalidPacketException(rfidErrorCode.PacketDataTooSmall, buffer, 0);
foreach (System.Reflection.FieldInfo info in obj.GetType().GetFields())
{
#region Parse Tracing code
#if false
if (info.FieldType.IsArray)
{
System.Diagnostics.Debug.WriteLine(String.Format("ParseMessage:: {0}: {1}", info.FieldType.Name, info.Name), "TRACE");
}
else
{
System.Diagnostics.Debug.WriteLine(String.Format("ParseMessage:: {0} {1}: {2} = {3}", info.IsInitOnly ? "RO" : "", info.FieldType.Name, info.Name, info.GetValue(obj).ToString()), "TRACE");
}
#endif
#endregion
switch (info.FieldType.Name)
{
case "Byte[]":
int arraySize = 0;
if (info.GetValue(obj) != null) // This is for fixed length byte arrays (none right now)
{
arraySize = ((byte[])info.GetValue(obj)).Length;
if (offset + arraySize > offsetLimit)
return -1;
byte[] newArray = new byte[arraySize];
for (int i = 0; i < arraySize; i++)
newArray[i] = buffer[offset+i];
// Reverse the array if it has tag data
if (info.Name == "inventory_data")
Array.Reverse(newArray);
info.SetValue(obj, newArray);
}
else
{
// Variable length array (assume the rest of the packet is the data)
arraySize = buffer.Length - offset;
byte[] newArray = new byte[arraySize];
for (int i = 0; i < arraySize; i++)
newArray[i] = buffer[offset+i];
info.SetValue(obj, newArray);
}
offset += arraySize;
// binaryWriter.Write((byte[])info.GetValue(obj), 0, arraySize);
break;
case "Byte":
if (offset + 1 > offsetLimit)
return -1;
if (info.IsInitOnly)
{
if ((byte)info.GetValue(obj) != (byte)buffer[offset])
throw new rfidInvalidPacketFieldException(info.Name, info.GetValue(obj).ToString(), buffer[offset].ToString());
}
else
{
info.SetValue(obj, buffer[offset]);
}
offset += 1;
break;
case "UInt16":
if (offset + 2 > offsetLimit)
return -1;
if (info.IsInitOnly)
{
if ((UInt16)info.GetValue(obj) != Parse_UInt16(buffer, offset))
throw new rfidInvalidPacketFieldException(info.Name, info.GetValue(obj).ToString(), Parse_UInt16(buffer, offset).ToString());
}
else
{
info.SetValue(obj, Parse_UInt16(buffer, offset));
}
offset += 2;
break;
case "UInt32":
if (offset + 4 > offsetLimit)
return -1;
if (info.IsInitOnly)
{
if ((UInt32)info.GetValue(obj) != Parse_UInt32(buffer, offset))
throw new rfidInvalidPacketFieldException(info.Name, info.GetValue(obj).ToString(), Parse_UInt32(buffer, offset).ToString());
}
else
{
info.SetValue(obj, Parse_UInt32(buffer, offset));
}
offset += 4;
break;
case "String":
int strlen = Find_String_Length(obj, info);
if (offset + 12 > offsetLimit)
return -1;
info.SetValue(obj, Parse_String(buffer, offset, strlen));
offset += strlen;
break;
// case "Char[]":
// binaryWriter.Write((char[])info.GetValue(obj));
// break;
default:
throw new ApplicationException("Parse_Fields Error " + info.Name + "(" + info.FieldType.Name + ") is an unsupported type.");
}
}
return offset;
}
