ps = i
				o = cumulativeEncSum + int64(sn)*(pkgSz+32)

				partDarePkgOffset = partOffset - skip
			}
			if readStart {
				currentPartBytes := v - partOffset
				currentPartDareBytes := v - partDarePkgOffset
				if currentPartBytes < toRead {
					toRead -= currentPartBytes
					l += getEncSize(currentPartDareBytes)
				} else {
					// current part has the last
					// byte required