System.TermInfoDriver.CheckWindowDimensions C# (CSharp) Method

		unsafe void CheckWindowDimensions ()
		{
			if (native_terminal_size == null || terminal_size == *native_terminal_size)
				return;

			if (*native_terminal_size == -1){
				int c = reader.Get (TermInfoNumbers.Columns);
				if (c != 0)
					windowWidth = c;
				
				c = reader.Get (TermInfoNumbers.Lines);
				if (c != 0)
					windowHeight = c;
			} else {
				terminal_size = *native_terminal_size;
				windowWidth = terminal_size >> 16;
				windowHeight = terminal_size & 0xffff;
			}
			bufferHeight = windowHeight;
			bufferWidth = windowWidth;
		}