private static Array CrackSingleDimSafeArray(IntPtr psa)
{
uint cDims = PropVariantNativeMethods.SafeArrayGetDim(psa);
if (cDims != 1)
{
throw new ArgumentException("LocalizedMessages.PropVariantMultiDimArray", "psa");
}
int lBound = PropVariantNativeMethods.SafeArrayGetLBound(psa, 1U);
int uBound = PropVariantNativeMethods.SafeArrayGetUBound(psa, 1U);
int n = uBound - lBound + 1; // uBound is inclusive
object[] array = new object[n];
for (int i = lBound; i <= uBound; ++i)
{
array[i] = PropVariantNativeMethods.SafeArrayGetElement(psa, ref i);
}
return(array);
}
private Array GetVector <T>()
{
int count = PropVariantNativeMethods.PropVariantGetElementCount(this);
if (count <= 0)
{
return(null);
}
if (typeof(T) == typeof(byte))
{
return(this.GetBlobData() as T[]);
}
lock (_padlock)
{
if (_vectorActions == null)
{
_vectorActions = GenerateVectorActions();
}
}
Action <PropVariant, Array, uint> action;
if (!_vectorActions.TryGetValue(typeof(T), out action))
{
throw new InvalidCastException("LocalizedMessages.PropVariantUnsupportedType");
}
Array array = new T[count];
for (uint i = 0; i < count; i++)
{
action(this, array, i);
}
return(array);
}
/// <summary>
/// Disposes the object, calls the clear function.
/// </summary>
public void Dispose()
{
PropVariantNativeMethods.PropVariantClear(this);
GC.SuppressFinalize(this);
}
private static Dictionary <Type, Action <PropVariant, Array, uint> > GenerateVectorActions()
{
Dictionary <Type, Action <PropVariant, Array, uint> > cache = new Dictionary <Type, Action <PropVariant, Array, uint> >();
cache.Add(typeof(Int16), (pv, array, i) =>
{
short val;
PropVariantNativeMethods.PropVariantGetInt16Elem(pv, i, out val);
array.SetValue(val, i);
});
cache.Add(typeof(UInt16), (pv, array, i) =>
{
ushort val;
PropVariantNativeMethods.PropVariantGetUInt16Elem(pv, i, out val);
array.SetValue(val, i);
});
cache.Add(typeof(Int32), (pv, array, i) =>
{
int val;
PropVariantNativeMethods.PropVariantGetInt32Elem(pv, i, out val);
array.SetValue(val, i);
});
cache.Add(typeof(UInt32), (pv, array, i) =>
{
uint val;
PropVariantNativeMethods.PropVariantGetUInt32Elem(pv, i, out val);
array.SetValue(val, i);
});
cache.Add(typeof(Int64), (pv, array, i) =>
{
long val;
PropVariantNativeMethods.PropVariantGetInt64Elem(pv, i, out val);
array.SetValue(val, i);
});
cache.Add(typeof(UInt64), (pv, array, i) =>
{
ulong val;
PropVariantNativeMethods.PropVariantGetUInt64Elem(pv, i, out val);
array.SetValue(val, i);
});
cache.Add(typeof(DateTime), (pv, array, i) =>
{
System.Runtime.InteropServices.ComTypes.FILETIME val;
PropVariantNativeMethods.PropVariantGetFileTimeElem(pv, i, out val);
long fileTime = GetFileTimeAsLong(ref val);
array.SetValue(DateTime.FromFileTime(fileTime), i);
});
cache.Add(typeof(Boolean), (pv, array, i) =>
{
bool val;
PropVariantNativeMethods.PropVariantGetBooleanElem(pv, i, out val);
array.SetValue(val, i);
});
cache.Add(typeof(Double), (pv, array, i) =>
{
double val;
PropVariantNativeMethods.PropVariantGetDoubleElem(pv, i, out val);
array.SetValue(val, i);
});
cache.Add(typeof(Single), (pv, array, i) => // float
{
float[] val = new float[1];
Marshal.Copy(pv._ptr2, val, (int)i, 1);
array.SetValue(val[0], (int)i);
});
cache.Add(typeof(Decimal), (pv, array, i) =>
{
int[] val = new int[4];
for (int a = 0; a < val.Length; a++)
{
val[a] = Marshal.ReadInt32(pv._ptr2,
(int)i * sizeof(decimal) + a * sizeof(int)); //index * size + offset quarter
}
array.SetValue(new decimal(val), i);
});
cache.Add(typeof(String), (pv, array, i) =>
{
string val = string.Empty;
PropVariantNativeMethods.PropVariantGetStringElem(pv, i, ref val);
array.SetValue(val, i);
});
return(cache);
}