From d57d345c057f784293439936f8a62fe01cffde06 Mon Sep 17 00:00:00 2001
From: Florian Forster <ff@octo.it>
Date: Thu, 8 Jul 2010 11:40:04 +0200
Subject: [PATCH] "list graphs" action: Don't show graphs without instances.

---
 src/action_list_graphs.c | 3 +++
 src/graph.c              | 8 ++++++++
 src/graph.h              | 2 ++
 3 files changed, 13 insertions(+)

diff --git a/src/action_list_graphs.c b/src/action_list_graphs.c
index 2b26043..7973a08 100644
--- a/src/action_list_graphs.c
+++ b/src/action_list_graphs.c
@@ -135,6 +135,9 @@ static int print_graph_html (graph_config_t *cfg, /* {{{ */
   char params[1024];
   char title[1024];
 
+  if (graph_num_instances (cfg) < 1)
+    return (0);
+
   memset (title, 0, sizeof (title));
   graph_get_title (cfg, title, sizeof (title));
   html_escape_buffer (title, sizeof (title));
diff --git a/src/graph.c b/src/graph.c
index f2699e1..9b545fd 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -490,6 +490,14 @@ static int graph_sort_instances_cb (const void *v0, const void *v1) /* {{{ */
         *(graph_instance_t * const *) v1));
 } /* }}} int graph_sort_instances_cb */
 
+size_t graph_num_instances (graph_config_t *cfg) /* {{{ */
+{
+  if (cfg == NULL)
+    return ((size_t) -1);
+
+  return (cfg->instances_num);
+} /* }}} size_t graph_num_instances */
+
 int graph_sort_instances (graph_config_t *cfg) /* {{{ */
 {
   if (cfg == NULL)
diff --git a/src/graph.h b/src/graph.h
index 26b4ac6..b6f2e7c 100644
--- a/src/graph.h
+++ b/src/graph.h
@@ -85,6 +85,8 @@ int graph_inst_search_field (graph_config_t *cfg,
 
 int graph_compare (graph_config_t *cfg, const graph_ident_t *ident);
 
+size_t graph_num_instances (graph_config_t *cfg);
+
 int graph_sort_instances (graph_config_t *cfg);
 
 int graph_clear_instances (graph_config_t *cfg);
-- 
2.11.0