/// <summary>Reads Single and swap bytes if needed</summary>
/// <returns>Single</returns>
public override Single ReadSingle()
{
Byte[] bytes = base.ReadBytes(sizeof(Single));
EndianHelper.AdjustEndianness(typeof(Single), bytes, this._endiannes);
return(BitConverter.ToSingle(bytes, 0));
}
/// <summary>Reads Int64 and swap bytes if needed</summary>
/// <returns>Int64</returns>
public override Int64 ReadInt64()
{
Byte[] bytes = base.ReadBytes(sizeof(Int64));
EndianHelper.AdjustEndianness(typeof(Int64), bytes, this._endiannes);
return(BitConverter.ToInt64(bytes, 0));
}
/// <summary>Reads unsigned Int32 and swap bytes if needed</summary>
/// <returns>UInt32</returns>
public override UInt32 ReadUInt32()
{
Byte[] bytes = base.ReadBytes(sizeof(UInt32));
EndianHelper.AdjustEndianness(typeof(UInt32), bytes, this._endiannes);
return(BitConverter.ToUInt32(bytes, 0));
}
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>Reads decimal and swap bytes if needed</summary>
/// <returns>Decimal</returns>
public override Decimal ReadDecimal()
{
Byte[] bytes = base.ReadBytes(sizeof(Decimal));
EndianHelper.AdjustEndianness(typeof(Decimal), bytes, this._endiannes);
var i1 = BitConverter.ToInt32(bytes, 0);
var i2 = BitConverter.ToInt32(bytes, 4);
var i3 = BitConverter.ToInt32(bytes, 8);
var i4 = BitConverter.ToInt32(bytes, 12);
return(new Decimal(new Int32[] { i1, i2, i3, i4, }));
}
/// <summary>Get structure from specific padding from the beginning of the image</summary>
/// <typeparam name="T">Structure type</typeparam>
/// <param name="padding">Padding from the beginning of the image</param>
/// <returns>Readed structure from image</returns>
public virtual T PtrToStructure <T>(UInt32 padding) where T : struct
{
Byte[] bytes = this.ReadBytes(padding, (UInt32)Marshal.SizeOf(typeof(T)));
EndianHelper.AdjustEndianness(typeof(T), bytes, this.Endianness);
GCHandle handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
try
{
T result = (T)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(T));
return(result);
} finally
{
handle.Free();
}
}
