Be more tolerant of NULL collections (appear as if they're empty instead of dying).

Fix lv2_inspect crash on GUI-less plugins.


git-svn-id: http://svn.drobilla.net/lad/slv2@787 a436a847-0d15-0410-975c-d299462d15a1

4 files changed, 10 insertions, 7 deletions

diff --git a/src/pluginclasses.c b/src/pluginclasses.c
index 5cf56ec..1b578f1 100644
--- a/src/pluginclasses.c
+++ b/src/pluginclasses.c
@@ -38,6 +38,7 @@ void
 slv2_plugin_classes_free(SLV2PluginClasses list)
 {
 	//if (list != world->plugin_classes)
+	if (list)
 		raptor_free_sequence(list);
 }
 
@@ -45,7 +46,7 @@ slv2_plugin_classes_free(SLV2PluginClasses list)
 unsigned
 slv2_plugin_classes_size(SLV2PluginClasses list)
 {
-	return raptor_sequence_size(list);
+	return (list ? raptor_sequence_size(list) : 0);
 }
 
 
diff --git a/src/plugins.c b/src/plugins.c
index d524122..9d3214e 100644
--- a/src/plugins.c
+++ b/src/plugins.c
@@ -42,7 +42,7 @@ slv2_plugins_new()
 void
 slv2_plugins_free(SLV2World world, SLV2Plugins list)
 {
-	if (list != world->plugins)
+	if (list && list != world->plugins)
 		raptor_free_sequence(list);
 }
 
@@ -268,7 +268,7 @@ slv2_plugins_load_path(SLV2Plugins list,
 unsigned
 slv2_plugins_size(SLV2Plugins list)
 {
-	return raptor_sequence_size(list);
+	return (list ? raptor_sequence_size(list) : 0);
 }
 
 
diff --git a/src/pluginuis.c b/src/pluginuis.c
index 5d01bae..bc4b66b 100644
--- a/src/pluginuis.c
+++ b/src/pluginuis.c
@@ -41,14 +41,15 @@ slv2_uis_new()
 void
 slv2_uis_free(SLV2UIs list)
 {
-	raptor_free_sequence(list);
+	if (list)
+		raptor_free_sequence(list);
 }
 
 
 unsigned
 slv2_uis_size(SLV2UIs list)
 {
-	return raptor_sequence_size(list);
+	return (list ? raptor_sequence_size(list) : 0);
 }
 
 
diff --git a/src/values.c b/src/values.c
index 4920454..02544cd 100644
--- a/src/values.c
+++ b/src/values.c
@@ -34,14 +34,15 @@ slv2_values_new()
 void
 slv2_values_free(SLV2Values list)
 {
-	raptor_free_sequence(list);
+	if (list)
+		raptor_free_sequence(list);
 }
 
 
 unsigned
 slv2_values_size(SLV2Values list)
 {
-	return raptor_sequence_size(list);
+	return (list ? raptor_sequence_size(list) : 0);
 }