/* tap-stats_tree.c
 * tshark's tap implememntation of stats_tree
 * 2005, Luis E. G. Ontanon
 *
 * $Id: tap-stats_tree.c 35111 2010-12-03 20:32:17Z wmeier $
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>
#include <stdio.h>
#include <glib.h>
#include <epan/stats_tree_priv.h>
#include <epan/stat_cmd_args.h>
#include <epan/report_err.h>

/* actually unused */
struct _st_node_pres {
	void *dummy;
};

struct _tree_pres {
	void** dummy;
};

struct _tree_cfg_pres {
	gchar *init_string;	
};

static void
draw_stats_tree(void *psp)
{
	stats_tree *st = (stats_tree *)psp;
	GString *s;
	gchar *fmt;
	stat_node *child;
	
	s = g_string_new("\n===================================================================\n");
	fmt = g_strdup_printf(" %%s%%-%us%%12s\t%%12s\t%%12s\n",stats_tree_branch_max_namelen(&st->root,0));
	g_string_append_printf(s,fmt,"",st->cfg->name,"value","rate","percent");
	g_free(fmt);
	g_string_append_printf(s,"-------------------------------------------------------------------\n");
	
	for (child = st->root.children; child; child = child->next ) {
		stats_tree_branch_to_str(child,s,0);
	}
	
	s = g_string_append(s,"\n===================================================================\n");
	
	printf("%s",s->str);
	
}

static void
init_stats_tree(const char *optarg, void *userdata _U_)
{
	char *abbr = stats_tree_get_abbr(optarg);
	GString	*error_string;
	stats_tree_cfg *cfg = NULL;
	stats_tree *st = NULL;
	
	if (abbr) {
		cfg = stats_tree_get_cfg_by_abbr(abbr);

		if (cfg != NULL) {
			if (strncmp (optarg, cfg->pr->init_string, strlen(cfg->pr->init_string)) == 0){
				st = stats_tree_new(cfg,NULL,optarg+strlen(cfg->pr->init_string));
			} else {
				report_failure("Wrong stats_tree (%s) found when looking at ->init_string",abbr);
				return;
			}
		} else {
			report_failure("no such stats_tree (%s) found in stats_tree registry",abbr);
			return;
		}
		
		g_free(abbr);
		
	} else {
		report_failure("could not obtain stats_tree abbr (%s) from arg '%s'",abbr,optarg);		
		return;
	}
	
	error_string = register_tap_listener(st->cfg->tapname,
					     st,
					     st->filter,
					     st->cfg->flags,
					     stats_tree_reset,
					     stats_tree_packet,
					     draw_stats_tree);
	
	if (error_string) {
		report_failure("stats_tree for: %s failed to attach to the tap: %s",cfg->name,error_string->str);
		return;
	}

	if (cfg->init) cfg->init(st);

}

void
register_stats_tree_tap (gpointer k _U_, gpointer v, gpointer p _U_)
{
	stats_tree_cfg *cfg = (stats_tree_cfg *)v;
	
	cfg->pr = (tree_cfg_pres *)g_malloc(sizeof(tree_cfg_pres));
	cfg->pr->init_string = g_strdup_printf("%s,tree", cfg->abbr);

	register_stat_cmd_arg(cfg->pr->init_string, init_stats_tree, NULL);
	
}

static void
free_tree_presentation(stats_tree *st)
{
	g_free(st->pr);
}


void
register_tap_listener_stats_tree_stat(void)
{
	stats_tree_presentation(register_stats_tree_tap, NULL, NULL, NULL, NULL,
				NULL, free_tree_presentation, NULL, NULL, NULL);
}
