System.Net.HttpConnection.ReadLine C# (CSharp) Method

		string ReadLine (byte [] buffer, int offset, int len, ref int used)
		{
			if (current_line == null)
				current_line = new StringBuilder ();
			int last = offset + len;
			used = 0;
			for (int i = offset; i < last && line_state != LineState.LF; i++) {
				used++;
				byte b = buffer [i];
				if (b == 13) {
					line_state = LineState.CR;
				} else if (b == 10) {
					line_state = LineState.LF;
				} else {
					current_line.Append ((char) b);
				}
			}

			string result = null;
			if (line_state == LineState.LF) {
				line_state = LineState.None;
				result = current_line.ToString ();
				current_line.Length = 0;
			}

			return result;
		}