From 95cad1f9e58e9f1a5480e62fc2cdd2c3de33a863 Mon Sep 17 00:00:00 2001
From: Florian Forster <ff@octo.it>
Date: Sat, 26 Jun 2010 12:31:23 +0200
Subject: [PATCH] src/graph_instance.[ch]: Implement "inst_ident_matches" in
 addition to "inst_matches_ident".

---
 src/graph.c          |  2 +-
 src/graph_ident.c    |  6 +-----
 src/graph_instance.c | 11 ++++++++++-
 src/graph_instance.h |  8 +++++++-
 4 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/src/graph.c b/src/graph.c
index 0802bee..01f0791 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -336,7 +336,7 @@ graph_instance_t *graph_inst_find_matching (graph_config_t *cfg, /* {{{ */
     return (NULL);
 
   for (i = 0; i < cfg->instances_num; i++)
-    if (inst_matches_ident (cfg->instances[i], ident))
+    if (inst_ident_matches (cfg->instances[i], ident))
       return (cfg->instances[i]);
 
   return (NULL);
diff --git a/src/graph_ident.c b/src/graph_ident.c
index cb9a361..36e066d 100644
--- a/src/graph_ident.c
+++ b/src/graph_ident.c
@@ -377,12 +377,8 @@ int ident_compare (const graph_ident_t *i0, /* {{{ */
 _Bool ident_matches (const graph_ident_t *selector, /* {{{ */
     const graph_ident_t *ident)
 {
-  if ((selector == NULL) && (ident == NULL))
+  if ((selector == NULL) || (ident == NULL))
     return (0);
-  else if (selector == NULL)
-    return (-1);
-  else if (ident == NULL)
-    return (1);
 
   if (!part_matches (selector->host, ident->host))
     return (0);
diff --git a/src/graph_instance.c b/src/graph_instance.c
index 2d12873..5431589 100644
--- a/src/graph_instance.c
+++ b/src/graph_instance.c
@@ -419,13 +419,22 @@ int inst_compare_ident (graph_instance_t *inst, /* {{{ */
   return (ident_compare (inst->select, ident));
 } /* }}} int inst_compare_ident */
 
-_Bool inst_matches_ident (graph_instance_t *inst, /* {{{ */
+_Bool inst_ident_matches (graph_instance_t *inst, /* {{{ */
     const graph_ident_t *ident)
 {
   if ((inst == NULL) || (ident == NULL))
     return (0);
 
   return (ident_matches (inst->select, ident));
+} /* }}} _Bool inst_ident_matches */
+
+_Bool inst_matches_ident (graph_instance_t *inst, /* {{{ */
+    const graph_ident_t *ident)
+{
+  if ((inst == NULL) || (ident == NULL))
+    return (0);
+
+  return (ident_matches (ident, inst->select));
 } /* }}} _Bool inst_matches_ident */
 
 _Bool inst_matches_string (graph_config_t *cfg, /* {{{ */
diff --git a/src/graph_instance.h b/src/graph_instance.h
index a6e7462..fa08dcd 100644
--- a/src/graph_instance.h
+++ b/src/graph_instance.h
@@ -32,7 +32,13 @@ graph_ident_t *inst_get_selector (graph_instance_t *inst);
 
 int inst_compare_ident (graph_instance_t *inst, const graph_ident_t *ident);
 
-_Bool inst_matches_ident (graph_instance_t *inst, const graph_ident_t *ident);
+/* Returns true if "ident" matches the instance's selector. */
+_Bool inst_ident_matches (graph_instance_t *inst, const graph_ident_t *ident);
+
+/* Returns true if the instance's selector matches the (more general)
+ * "selector" ident. */
+_Bool inst_matches_ident (graph_instance_t *inst,
+    const graph_ident_t *selector);
 
 _Bool inst_matches_string (graph_config_t *cfg, graph_instance_t *inst,
     const char *term);
-- 
2.30.2