Miscellany

GSList *gnomemeeting_local_addressbook_enum_categories (GmAddressbook *addressbook){  GSList *contactlist = NULL;  GSList *contactlist_iter = NULL;  GSList *grouplist = NULL;  GSList *contact_grouplist = NULL;  gint nbr = 0;  /* this only makes sense on a local addressbook */  if (addressbook &&      !gnomemeeting_addressbook_is_local (addressbook))    return NULL;  /* get all contacts of that addressbook (or all if NULL)  */  contactlist =    gnomemeeting_addressbook_get_contacts (addressbook,                                           nbr,                                           FALSE,                                           NULL, NULL, NULL, NULL, NULL);  for (contactlist_iter = contactlist;       contactlist_iter != NULL;       contactlist_iter = g_slist_next (contactlist_iter))    {      if (contactlist_iter->data)        {          /* get all categories from that contact */          contact_grouplist =            gmcontact_enum_categories ((const GmContact*) contactlist_iter->data);          if (contact_grouplist)            {              if (grouplist)                {                  grouplist =                    g_slist_concat (grouplist, contact_grouplist);                  g_slist_free (contact_grouplist);                }              else                grouplist = contact_grouplist;              contact_grouplist = NULL;            }        }    }  g_slist_foreach (contactlist,                   (GFunc) gmcontact_delete,                   NULL);  g_slist_free (contactlist);  grouplist =    gm_string_gslist_remove_dups (grouplist);  return grouplist;}