internal static void AdjustEndianness(Type type, Byte[] data, EndianHelper.Endian endian, Int32 startOffset = 0)
{
if (EndianHelper.Endianness == endian)
{
return;
}
TypeCode code = Type.GetTypeCode(type);
switch (code)
{
default:
Array.Reverse(data, startOffset, EndianHelper.SizeTypes[code]);
break;
case TypeCode.String:
return; //Ignore strings
case TypeCode.Object:
foreach (FieldInfo field in type.GetFields())
{
Type fieldType = field.FieldType;
if (field.IsStatic) // Ignore static fields
{
continue;
}
/*else if(fieldType.IsArray)// array fields
* {
* //handle arrays, assuming fixed length
* MarshalAsAttribute[] attr = (MarshalAsAttribute[])fieldType.GetCustomAttributes(typeof(MarshalAsAttribute), false);
* if(attr.Length == 0 || attr[0].SizeConst == 0)
* throw new NotSupportedException("Array fields must be decorated with a MarshalAsAttribute with SizeConst specified.");
*
* var arrayLength = attr[0].SizeConst;
* var elementType = fieldType.GetElementType();
* var elementSize = Marshal.SizeOf(elementType);
* var arrayOffset = Marshal.OffsetOf(type, field.Name).ToInt32();
*
* for(int i = arrayOffset; i < arrayOffset + elementSize * arrayLength; i += elementSize)
* {
* MaybeAdjustEndianness(elementType, data, endianness, i);
* }
* }*/else
{
Int32 offset = Marshal.OffsetOf(type, field.Name).ToInt32();
Int32 fieldOffset = startOffset + offset;
EndianHelper.AdjustEndianness(fieldType, data, endian, fieldOffset);
}
}
break;
}
}
/// <summary>Creates reader for specific byte endianness</summary>
/// <param name="endiannes">Big or Little endian</param>
/// <param name="input">Byte array stream</param>
/// <returns>BinaryReader</returns>
public static BinaryReader CreateReader(EndianHelper.Endian endiannes, MemoryStream input)
{
if (BitConverter.IsLittleEndian == (endiannes == EndianHelper.Endian.Little))
{
return(new BinaryReader(input));
}
else
{
return(new BinaryEndianReader(input, endiannes));
}
}
/// <summary>Create instance of the binary reader specifying required endianness and input stream</summary>
/// <param name="endianness">Required endianness</param>
/// <param name="input">Byte input stream</param>
public BinaryEndianReader(Stream input, EndianHelper.Endian endianness)
: base(input)
{
this._endiannes = endianness;
}