}
	var L string
	if t.L == -1 {
		L = "data"
	} else {
		L = fmt.Sprintf("%d", t.L)
	}
	return fmt.Sprintf("tile/%d/%s/%s%s", t.H, L, nStr, pStr)
}

// ParseTilePath parses a tile coordinate path.
func ParseTilePath(path string) (Tile, error) {
	f := strings.Split(path, "/")
	if len(f) < 4 || f[0] != "tile" {
		return Tile{}, &badPathError{path}
	}
	h, err1 := strconv.Atoi(f[1])
	isData := false

			return
		}
		w.Header().Set("Content-Type", "text/plain; charset=UTF-8")
		w.Write(data)

	case strings.HasPrefix(r.URL.Path, "/tile/"):
		t, err := tlog.ParseTilePath(r.URL.Path[1:])
		if err != nil {
			http.Error(w, "invalid tile syntax", http.StatusBadRequest)
			return
		}
		if t.L == -1 {
			// Record data.
			start := t.N << uint(t.H)