using System;
using System.Text;
using ln.type;

namespace ln.ethercat
{
    public static class ECDataTypeConverter
    {
        public static object ConvertFromEthercat(ECDataTypes dataType, byte[] rawData)
        {
            if (rawData == null)
                return null;
                
            int offset = 0;

            switch (dataType)
            {
                case ECDataTypes.NONE:
                    return null;
                case ECDataTypes.REAL:
                    return rawData.GetSingle(ref offset, Endianess.BIG);
                case ECDataTypes.LREAL:
                    return rawData.GetDouble(ref offset, Endianess.BIG);
                case ECDataTypes.STRING:
                    return Encoding.ASCII.GetString(rawData);
                case ECDataTypes.INT:
                    return rawData.GetShort(ref offset, Endianess.BIG);
                case ECDataTypes.DINT:
                    return rawData.GetInt(ref offset, Endianess.BIG);
                case ECDataTypes.UINT:
                    return rawData.GetUShort(ref offset, Endianess.BIG);
                case ECDataTypes.UDINT:
                    return rawData.GetUInt(ref offset, Endianess.BIG);
                case ECDataTypes.USINT:
                    return rawData[offset];
                default:
                    return rawData;
            }
        }

    }
}