/// <summary>
/// Copy from input manipulator to internal window
/// </summary>
/// <param name="input">source of data</param>
/// <param name="length">length of data to copy</param>
/// <returns>the number of bytes copied</returns>
public int CopyStored(StreamManipulator input, int length)
{
length = Math.Min(Math.Min(length, WindowSize - windowFilled), input.AvailableBytes);
int copied;
int tailLen = WindowSize - windowEnd;
if (length > tailLen) {
copied = input.CopyBytes(window, windowEnd, tailLen);
if (copied == tailLen) {
copied += input.CopyBytes(window, 0, length - tailLen);
}
} else {
copied = input.CopyBytes(window, windowEnd, length);
}
windowEnd = (windowEnd + copied) & WindowMask;
windowFilled += copied;
return copied;
}
