/// <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;
}
}
}
/// <summary>
/// Creates a byte array depending on the struct type.
/// </summary>
/// <param name="sourceClass">The struct object</param>
/// <returns>A byte array or null if fails.</returns>
public static byte[] ToBytes(object sourceClass)
{
Type type = sourceClass.GetType();
int size = GetClassSize(type);
byte[] bytes = new byte[size];
byte[] bytes2 = null;
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 ((bool)property.GetValue(sourceClass, null))
bytes[bytePos] |= (byte)Math.Pow(2, bitPos); // is true
else
bytes[bytePos] &= (byte)(~(byte)Math.Pow(2, bitPos)); // is false
numBytes += 0.125;
break;
case "Byte":
numBytes = (int)Math.Ceiling(numBytes);
bytePos = (int)numBytes;
bytes[bytePos] = (byte)property.GetValue(sourceClass, null);
numBytes++;
break;
case "Int16":
bytes2 = Int.ToByteArray((Int16)property.GetValue(sourceClass, null));
break;
case "UInt16":
bytes2 = Word.ToByteArray((UInt16)property.GetValue(sourceClass, null));
break;
case "Int32":
bytes2 = DInt.ToByteArray((Int32)property.GetValue(sourceClass, null));
break;
case "UInt32":
bytes2 = DWord.ToByteArray((UInt32)property.GetValue(sourceClass, null));
break;
case "Double":
bytes2 = Double.ToByteArray((double)property.GetValue(sourceClass, null));
break;
}
if (bytes2 != null)
{
// add them
numBytes = Math.Ceiling(numBytes);
if ((numBytes / 2 - Math.Floor(numBytes / 2.0)) > 0)
numBytes++;
bytePos = (int)numBytes;
for (int bCnt = 0; bCnt < bytes2.Length; bCnt++)
bytes[bytePos + bCnt] = bytes2[bCnt];
numBytes += bytes2.Length;
}
}
return bytes;
}
