X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fgraph.c;h=9b545fd702922f7c73c45ca63db5cef4396b168a;hb=748436c71114d396ded0d2187355aced2275f6c4;hp=5c143b46641c3b8aafebddd1bc2f00898f433c8a;hpb=b988bcc13c655299bc3796cccaa583f62704e759;p=collection4.git

diff --git a/src/graph.c b/src/graph.c
index 5c143b4..9b545fd 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -299,8 +299,10 @@ int graph_add_def (graph_config_t *cfg, graph_def_t *def) /* {{{ */
 
 _Bool graph_matches_ident (graph_config_t *cfg, const graph_ident_t *ident) /* {{{ */
 {
+#if C4_DEBUG
   if ((cfg == NULL) || (ident == NULL))
     return (0);
+#endif
 
   return (ident_matches (cfg->select, ident));
 } /* }}} _Bool graph_matches_ident */
@@ -482,6 +484,34 @@ int graph_compare (graph_config_t *cfg, const graph_ident_t *ident) /* {{{ */
   return (ident_compare (cfg->select, ident));
 } /* }}} int graph_compare */
 
+static int graph_sort_instances_cb (const void *v0, const void *v1) /* {{{ */
+{
+  return (inst_compare (*(graph_instance_t * const *) v0,
+        *(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)
+    return (EINVAL);
+
+  if (cfg->instances_num < 2)
+    return (0);
+
+  qsort (cfg->instances, cfg->instances_num, sizeof (*cfg->instances),
+      graph_sort_instances_cb);
+
+  return (0);
+} /* }}} int graph_sort_instances */
+
 int graph_clear_instances (graph_config_t *cfg) /* {{{ */
 {
   size_t i;