public static void CopyData(VirtualArray src, VirtualIndex srcIndex, VirtualArray dst, VirtualIndex dstIndex, int count, bool allowExpantion)
{
if (src == null || dst == null || srcIndex == null || dstIndex == null)
{
return;
}
if (src.Size < srcIndex.IndexValue)
{
throw new IndexOutOfRangeException();
}
srcIndex = srcIndex.Clone();
dstIndex = dstIndex.Clone();
while (count > 0)
{
Array arr = src._baseArray[srcIndex.YIndex] as Array;
int copyCount = maxSize - srcIndex.XIndex;
if (copyCount > count)
{
copyCount = count;
}
Array dstArr = null;
if (dst._baseArray.Count > dstIndex.YIndex)
{
dstArr = dst._baseArray[dstIndex.YIndex] as Array;
}
int accomdateble = (maxSize - dstIndex.XIndex);
if (accomdateble > copyCount)
{
accomdateble = copyCount;
}
if ((dstArr == null || accomdateble > (dstArr.Length - dstIndex.XIndex)) && allowExpantion)
{
if (dstArr == null)
{
//if (count - accomdateble >= 0)
// dstArr = new byte[maxSize];
//else
dstArr = new byte[accomdateble];
dst._baseArray.Add(dstArr);
}
else
{
byte[] tmpArray = new byte[accomdateble + dstArr.Length - (dstArr.Length - dstIndex.XIndex)];
Buffer.BlockCopy(dstArr, 0, tmpArray, 0, dstArr.Length);
dstArr = tmpArray;
dst._baseArray[dstIndex.YIndex] = dstArr;
}
}
Buffer.BlockCopy(arr, srcIndex.XIndex, dstArr, dstIndex.XIndex, accomdateble);
count -= accomdateble;
srcIndex.IncrementBy(accomdateble);
dstIndex.IncrementBy(accomdateble);
}
}
public static void CopyData(VirtualArray src, VirtualIndex srcIndex, VirtualArray dst, VirtualIndex dstIndex, int count)
{
CopyData(src, srcIndex, dst, dstIndex, count, false);
}