loop through cairo_path_data_t

[W Wlourf <wlourf1@...>]

Hello,

Background : I use Lua and Cairo to write some little widgets for Conky on my Linux System (http://u-scripts.blogspot.com/)

I've seen this example on how to iterating through a cairo_path_t in C.
I can reproduce it in Python but ... not in Lua.


Here is the sample code from http://www.dynaset.org/dogusanh/luacairo.html in the section cairo_path_data_t :

*****
 * Here is sample code for iterating through a #cairo_path_t:
 *
 *
 *      int i;
 *      cairo_path_t *path;
 *      cairo_path_data_t *data;
 * 
 *      path = cairo_copy_path (cr);
 * 
 *      for (i=0; i < path->num_data; i += path->data[i].header.length) {
 *          data = ""> *          switch (data->header.type) {
 *          case CAIRO_PATH_MOVE_TO:
 *              do_move_to_things (data[1].point.x, data[1].point.y);
 *              break;
 *          case CAIRO_PATH_LINE_TO:
 *              do_line_to_things (data[1].point.x, data[1].point.y);
 *              break;
 *          case CAIRO_PATH_CURVE_TO:
 *              do_curve_to_things (data[1].point.x, data[1].point.y,
 *                                  data[2].point.x, data[2].point.y,
 *                                  data[3].point.x, data[3].point.y);
 *              break;
 *          case CAIRO_PATH_CLOSE_PATH:
 *              do_close_path_things ();
 *              break;
 *          }
 *      }
 *      cairo_path_destroy (path);
*****

What I've done so far is to retrieve the cairo_path_length with .numdata and cairo_path_data_t with .data :

    path=cairo_copy_path(cr)
    print ("status,data,num_data",path.status, path.data, path.num_data)
 
but how to loop through the cairo_path_data_t like in C ??   

I someone can help thanks !!

Wlourf