Example #1
0
        /// <summary>
        /// Creates a struct of a specified type by an array of bytes.
        /// </summary>
        /// <param name="structType">The struct type</param>
        /// <param name="bytes">The array of bytes</param>
        /// <returns>The object depending on the struct type or null if fails(array-length != struct-length</returns>
        public static object FromBytes(Type structType, byte[] bytes)
        {
            if (bytes == null)
            {
                return(null);
            }

            if (bytes.Length != GetStructSize(structType))
            {
                return(null);
            }

            // and decode it
            int    bytePos     = 0;
            int    bitPos      = 0;
            double numBytes    = 0.0;
            object structValue = Activator.CreateInstance(structType);

            System.Reflection.FieldInfo[] infos = structValue.GetType().GetFields();
            foreach (System.Reflection.FieldInfo info in infos)
            {
                switch (info.FieldType.Name)
                {
                case "Boolean":
                    // get the value
                    bytePos = (int)Math.Floor(numBytes);
                    bitPos  = (int)((numBytes - (double)bytePos) / 0.125);
                    if ((bytes[bytePos] & (int)Math.Pow(2, bitPos)) != 0)
                    {
                        info.SetValue(structValue, true);
                    }
                    else
                    {
                        info.SetValue(structValue, false);
                    }
                    numBytes += 0.125;
                    break;

                case "Byte":
                    numBytes = Math.Ceiling(numBytes);
                    info.SetValue(structValue, (byte)(bytes[(int)numBytes]));
                    numBytes++;
                    break;

                case "Int16":
                    numBytes = Math.Ceiling(numBytes);
                    if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                    {
                        numBytes++;
                    }
                    // hier auswerten
                    ushort source = Word.FromBytes(bytes[(int)numBytes + 1], bytes[(int)numBytes]);
                    info.SetValue(structValue, source.ConvertToShort());
                    numBytes += 2;
                    break;

                case "UInt16":
                    numBytes = Math.Ceiling(numBytes);
                    if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                    {
                        numBytes++;
                    }
                    // hier auswerten
                    info.SetValue(structValue, Word.FromBytes(bytes[(int)numBytes + 1],
                                                              bytes[(int)numBytes]));
                    numBytes += 2;
                    break;

                case "Int32":
                    numBytes = Math.Ceiling(numBytes);
                    if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                    {
                        numBytes++;
                    }
                    // hier auswerten
                    uint sourceUInt = DWord.FromBytes(bytes[(int)numBytes + 3],
                                                      bytes[(int)numBytes + 2],
                                                      bytes[(int)numBytes + 1],
                                                      bytes[(int)numBytes + 0]);
                    info.SetValue(structValue, sourceUInt.ConvertToInt());
                    numBytes += 4;
                    break;

                case "UInt32":
                    numBytes = Math.Ceiling(numBytes);
                    if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                    {
                        numBytes++;
                    }
                    // hier auswerten
                    info.SetValue(structValue, DWord.FromBytes(bytes[(int)numBytes],
                                                               bytes[(int)numBytes + 1],
                                                               bytes[(int)numBytes + 2],
                                                               bytes[(int)numBytes + 3]));
                    numBytes += 4;
                    break;

                case "Double":
                    numBytes = Math.Ceiling(numBytes);
                    if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                    {
                        numBytes++;
                    }
                    // hier auswerten
                    info.SetValue(structValue, Double.FromByteArray(new byte[] { bytes[(int)numBytes],
                                                                                 bytes[(int)numBytes + 1],
                                                                                 bytes[(int)numBytes + 2],
                                                                                 bytes[(int)numBytes + 3] }));
                    numBytes += 4;
                    break;

                default:
                    var buffer = new byte[GetStructSize(info.FieldType)];
                    if (buffer.Length == 0)
                    {
                        continue;
                    }
                    Buffer.BlockCopy(bytes, (int)Math.Ceiling(numBytes), buffer, 0, buffer.Length);
                    info.SetValue(structValue, FromBytes(info.FieldType, buffer));
                    numBytes += buffer.Length;
                    break;
                }
            }
            return(structValue);
        }
Example #2
0
        /// <summary>
        /// Creates a struct of a specified type by an array of bytes.
        /// </summary>
        /// <param name="sourceClass"></param>
        /// <param name="classType">The struct type</param>
        /// <param name="bytes">The array of bytes</param>
        /// <returns>The object depending on the struct type or null if fails(array-length != struct-length</returns>
        public static void FromBytes(object sourceClass, Type classType, byte[] bytes)
        {
            if (bytes == null)
            {
                return;
            }

            if (bytes.Length != GetClassSize(classType))
            {
                return;
            }

            // and decode it
            int    bytePos  = 0;
            int    bitPos   = 0;
            double numBytes = 0.0;


            var properties = sourceClass.GetType().GetProperties();

            foreach (var property in properties)
            {
                switch (property.PropertyType.Name)
                {
                case "Boolean":
                    // get the value
                    bytePos = (int)Math.Floor(numBytes);
                    bitPos  = (int)((numBytes - (double)bytePos) / 0.125);
                    if ((bytes[bytePos] & (int)Math.Pow(2, bitPos)) != 0)
                    {
                        property.SetValue(sourceClass, true, null);
                    }
                    else
                    {
                        property.SetValue(sourceClass, false, null);
                    }
                    numBytes += 0.125;
                    break;

                case "Byte":
                    numBytes = Math.Ceiling(numBytes);
                    property.SetValue(sourceClass, (byte)(bytes[(int)numBytes]), null);
                    numBytes++;
                    break;

                case "Int16":
                    numBytes = Math.Ceiling(numBytes);
                    if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                    {
                        numBytes++;
                    }
                    // hier auswerten
                    ushort source = Word.FromBytes(bytes[(int)numBytes + 1], bytes[(int)numBytes]);
                    property.SetValue(sourceClass, source.ConvertToShort(), null);
                    numBytes += 2;
                    break;

                case "UInt16":
                    numBytes = Math.Ceiling(numBytes);
                    if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                    {
                        numBytes++;
                    }
                    // hier auswerten
                    property.SetValue(sourceClass, Word.FromBytes(bytes[(int)numBytes + 1], bytes[(int)numBytes]), null);
                    numBytes += 2;
                    break;

                case "Int32":
                    numBytes = Math.Ceiling(numBytes);
                    if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                    {
                        numBytes++;
                    }
                    // hier auswerten
                    uint sourceUInt = DWord.FromBytes(bytes[(int)numBytes + 3],
                                                      bytes[(int)numBytes + 2],
                                                      bytes[(int)numBytes + 1],
                                                      bytes[(int)numBytes + 0]);
                    property.SetValue(sourceClass, sourceUInt.ConvertToInt(), null);
                    numBytes += 4;
                    break;

                case "UInt32":
                    numBytes = Math.Ceiling(numBytes);
                    if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                    {
                        numBytes++;
                    }
                    // hier auswerten
                    property.SetValue(sourceClass, DWord.FromBytes(bytes[(int)numBytes],
                                                                   bytes[(int)numBytes + 1],
                                                                   bytes[(int)numBytes + 2],
                                                                   bytes[(int)numBytes + 3]), null);
                    numBytes += 4;
                    break;

                case "Double":
                    numBytes = Math.Ceiling(numBytes);
                    if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
                    {
                        numBytes++;
                    }
                    // hier auswerten
                    property.SetValue(sourceClass, Double.FromByteArray(new byte[] { bytes[(int)numBytes],
                                                                                     bytes[(int)numBytes + 1],
                                                                                     bytes[(int)numBytes + 2],
                                                                                     bytes[(int)numBytes + 3] }), null);
                    numBytes += 4;
                    break;

                default:
                    var buffer = new byte[GetClassSize(property.PropertyType)];
                    if (buffer.Length == 0)
                    {
                        continue;
                    }
                    Buffer.BlockCopy(bytes, (int)Math.Ceiling(numBytes), buffer, 0, buffer.Length);
                    var propClass = Activator.CreateInstance(property.PropertyType);
                    FromBytes(propClass, property.PropertyType, buffer);
                    property.SetValue(sourceClass, propClass, null);
                    numBytes += buffer.Length;
                    break;
                }
            }
        }