/// <summary>
/// This method updates or converts value to target type
/// </summary>
/// <param name="type">Frame item type</param>
/// <param name="targetType">Target property type</param>
/// <param name="value">Value to convert</param>
/// <returns></returns>
private static Object InternalUpdateValue(PackageItemTypes type, Type targetType, Object value)
{
//check value
if (value != null)
{
//check type
if (type == PackageItemTypes.String && targetType == typeof(Guid) && value is String)
{
Nullable <Guid> guidValue = (value as String).ToGuidWithoutDash();
return(guidValue.Value);
}
else if (type == PackageItemTypes.Enum)
{
if (Utility.IsNullableType(targetType))
{
targetType = Nullable.GetUnderlyingType(targetType);
}
if (!targetType.IsEnum)
{
throw new Exception(String.Format("TargetType is not enum type. [{0}]", targetType));
}
return(Enum.ToObject(targetType, value));
}
}
return(value);
}
/// <summary>
/// This function parse frame from data
/// </summary>
/// <param name="data">Data to parse</param>
/// <param name="action">Function to get frame item type</param>
private void InternalParseFrame(Byte[] data, Func <UInt16, UInt32, PackageItemTypes> action)
{
//vriables
UInt32 address = 0x00;
UInt16 length = 0x00;
Byte[] dataItem = null;
PackageItemTypes type = PackageItemTypes.Unkown;
int count = data.Length;
//parse frame
for (int i = 0; i < count; i++)
{
//read address
address = (UInt32)(data[i + 3] << 24 | data[i + 2] << 16 | data[i + 1] << 8 | data[i]);
length = (UInt16)(data[i + 5] << 8 | data[i + 4]);
//read frame item type
type = action != null?action(this.Address, address) : PackageItemTypes.Unkown;
//read data
dataItem = new Byte[length];
Buffer.BlockCopy(data, i + 6, dataItem, 0, length);
//parse
IPackageItem item = this.InternalParseFrame(type, address, length, dataItem);
if (item != null)
{
this.m_items.Add(item);
}
//next
i += 5 + length;
}
}
/// <summary>
/// This function initialize item of type
/// </summary>
/// <param name="type">Item type</param>
/// <param name="address">Item address for value</param>
/// <param name="value">Value</param>
/// <returns>Frame item | null</returns>
public static IPackageItem CreatePackageItem(PackageItemTypes type, UInt32 address, Object value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
switch (type)
{
case PackageItemTypes.DateTime:
return(new PackageItemDateTime(address, (DateTime)value));
case PackageItemTypes.Guid:
return(new PackageItemGuid(address, (Guid)value));
case PackageItemTypes.String:
{
if (value is Guid)
{
return(new PackageItemString(address, ((Guid)value).ToStringWithoutDash()));
}
else
{
return(new PackageItemString(address, (String)value));
}
}
case PackageItemTypes.Int16:
return(new PackageItemInt16(address, (Int16)value));
case PackageItemTypes.Int32:
return(new PackageItemInt32(address, (Int32)value));
case PackageItemTypes.Int64:
return(new PackageItemInt64(address, (Int64)value));
case PackageItemTypes.Byte:
return(new PackageItemByte(address, (Byte)value));
case PackageItemTypes.Boolean:
return(new PackageItemBoolean(address, (Boolean)value));
case PackageItemTypes.UInt16:
return(new PackageItemUInt16(address, (UInt16)value));
case PackageItemTypes.UInt32:
return(new PackageItemUInt32(address, (UInt32)value));
case PackageItemTypes.UInt64:
return(new PackageItemUInt64(address, (UInt64)value));
case PackageItemTypes.Enum:
return(new PackageItemEnum(address, value));
default:
return(new PackageItemUnkown(address, (List <Byte>)value));
}
}
/// <summary>
/// This function parse frame item from item type
/// </summary>
/// <param name="type">Type of frame</param>
/// <param name="address">Frame item address</param>
/// <param name="length">Frame item length</param>
/// <param name="data">Data frame item</param>
/// <returns>Frame item or null</returns>
private IPackageItem InternalParseFrame(PackageItemTypes type, UInt32 address, UInt16 length, Byte[] data)
{
switch (type)
{
case PackageItemTypes.DateTime:
return(new PackageItemDateTime(address, data));
case PackageItemTypes.Guid:
return(new PackageItemGuid(address, data));
case PackageItemTypes.String:
return(new PackageItemString(address, data));
case PackageItemTypes.Int16:
return(new PackageItemInt16(address, data));
case PackageItemTypes.Int32:
return(new PackageItemInt32(address, data));
case PackageItemTypes.Int64:
return(new PackageItemInt64(address, data));
case PackageItemTypes.Byte:
return(new PackageItemByte(address, data));
case PackageItemTypes.Boolean:
return(new PackageItemBoolean(address, data));
case PackageItemTypes.UInt16:
return(new PackageItemUInt16(address, data));
case PackageItemTypes.UInt32:
return(new PackageItemUInt32(address, data));
case PackageItemTypes.Enum:
return(new PackageItemEnum(address, data));
case PackageItemTypes.UInt64:
return(new PackageItemUInt64(address, data));
default:
return(new PackageItemUnkown(address, data));
}
}
/// <summary>
/// This function return NET object type from Frame Item type
/// </summary>
/// <param name="type">Frame item type</param>
/// <returns>NET object type</returns>
public static Type GetObjectTypeFromPackageItemType(PackageItemTypes type)
{
switch (type)
{
case PackageItemTypes.DateTime:
return(typeof(DateTime));
case PackageItemTypes.Guid:
return(typeof(Guid));
case PackageItemTypes.Int16:
return(typeof(Int16));
case PackageItemTypes.Int32:
return(typeof(Int32));
case PackageItemTypes.Int64:
return(typeof(Int64));
case PackageItemTypes.String:
return(typeof(String));
case PackageItemTypes.Byte:
return(typeof(Byte));
case PackageItemTypes.Boolean:
return(typeof(Boolean));
case PackageItemTypes.UInt64:
return(typeof(UInt64));
case PackageItemTypes.UInt32:
return(typeof(UInt32));
case PackageItemTypes.Enum:
return(typeof(Enum));
default:
return(typeof(Object));
}
}
/// <summary>
/// This function parse frame from data
/// </summary>
/// <param name="data">Data to parse</param>
/// <param name="action">Function to get frame item type</param>
private void InternalParseFrame(Byte[] data, Func <UInt16, UInt16, UInt32, PackageItemTypes> action)
{
//vriables
UInt32 address = 0x00;
UInt16 length = 0x00;
Byte[] dataItem = null;
PackageItemTypes type = PackageItemTypes.Unkown;
int count = data.Length;
UInt16 itemCount = 0x00;
UInt16 dataAddress = 0x00;
int currentIndex = 0x00;
//parse data
while (currentIndex < count)
{
//check group value
if (data[currentIndex++] != 0x67)
{
throw new Exception("Data are not valid!");
}
//get data address
dataAddress = (UInt16)(data[currentIndex + 1] << 8 | data[currentIndex]);
//get count+
itemCount = (UInt16)(data[currentIndex + 3] << 8 | data[currentIndex + 2]);
currentIndex += 0x04;
//create group
PackageGroupItem group = new PackageGroupItem(dataAddress);
//parse items
for (int i = 0; i < itemCount; i++)
{
//read address
address = (UInt32)(data[currentIndex + 3] << 24 | data[currentIndex + 2] << 16 | data[currentIndex + 1] << 8 | data[currentIndex]);
length = (UInt16)(data[currentIndex + 5] << 8 | data[currentIndex + 4]);
//read frame item type
type = action != null?action(this.Address, dataAddress, address) : PackageItemTypes.Unkown;
//read data
dataItem = new Byte[length];
Buffer.BlockCopy(data, currentIndex + 6, dataItem, 0, length);
//parse
IPackageItem item = this.InternalParseFrame(type, address, length, dataItem);
if (item != null)
{
group.Add(item);
}
//next
currentIndex += 0x06 + length;
}
//add group to frame
this.m_groups.Add(group);
}
}
