3 files changed, 62 insertions, 6 deletions

diff --git a/source/blender/blenkernel/BKE_addon.h b/source/blender/blenkernel/BKE_addon.h
index 74c1edd1c1b..e631d1d6537 100644
--- a/source/blender/blenkernel/BKE_addon.h
+++ b/source/blender/blenkernel/BKE_addon.h
@@ -26,8 +26,11 @@
  *  \ingroup bke
  */
 
-#include "RNA_types.h"
 
+struct ListBase;
+struct bAddon;
+
+#ifdef __RNA_TYPES_H__
 typedef struct bAddonPrefType {
 	/* type info */
 	char idname[64]; // best keep the same size as BKE_ST_MAXNAME
@@ -36,6 +39,10 @@ typedef struct bAddonPrefType {
 	ExtensionRNA ext;
 } bAddonPrefType;
 
+#else
+typedef struct bAddonPrefType bAddonPrefType;
+#endif
+
 bAddonPrefType *BKE_addon_pref_type_find(const char *idname, bool quiet);
 void            BKE_addon_pref_type_add(bAddonPrefType *apt);
 void            BKE_addon_pref_type_remove(const bAddonPrefType *apt);
@@ -43,4 +50,8 @@ void            BKE_addon_pref_type_remove(const bAddonPrefType *apt);
 void            BKE_addon_pref_type_init(void);
 void            BKE_addon_pref_type_free(void);
 
+struct bAddon  *BKE_addon_new(void);
+struct bAddon  *BKE_addon_ensure(struct ListBase *addons, const char *module);
+void            BKE_addon_free(struct bAddon *addon);
+
 #endif  /* __BKE_ADDON_H__ */
diff --git a/source/blender/blenkernel/intern/addon.c b/source/blender/blenkernel/intern/addon.c
index 0ef12397fe7..8a5154f0039 100644
--- a/source/blender/blenkernel/intern/addon.c
+++ b/source/blender/blenkernel/intern/addon.c
@@ -27,13 +27,59 @@
 #include <stddef.h>
 #include <stdlib.h>
 
+#include "RNA_types.h"
+
 #include "BLI_utildefines.h"
 #include "BLI_ghash.h"
+#include "BLI_string.h"
+#include "BLI_listbase.h"
+#include "BLI_utildefines.h"
 
 #include "BKE_addon.h"  /* own include */
+#include "BKE_idprop.h"
+
+#include "DNA_listBase.h"
+#include "DNA_userdef_types.h"
+
 
 #include "MEM_guardedalloc.h"
 
+/* -------------------------------------------------------------------- */
+/** \name Add-on New/Free
+ * \{ */
+
+bAddon *BKE_addon_new(void)
+{
+	bAddon *addon = MEM_callocN(sizeof(bAddon), "bAddon");
+	return addon;
+}
+
+bAddon *BKE_addon_ensure(ListBase *addon_list, const char *module)
+{
+	bAddon *addon = BLI_findstring(addon_list, module, offsetof(bAddon, module));
+	if (addon == NULL) {
+		addon = BKE_addon_new();
+		BLI_strncpy(addon->module, module, sizeof(addon->module));
+		BLI_addtail(addon_list, addon);
+	}
+	return addon;
+}
+
+void BKE_addon_free(bAddon *addon)
+{
+	if (addon->prop) {
+		IDP_FreeProperty(addon->prop);
+		MEM_freeN(addon->prop);
+	}
+	MEM_freeN(addon);
+}
+
+/** \} */
+
+/* -------------------------------------------------------------------- */
+/** \name Add-on Preference API
+ * \{ */
+
 static GHash *global_addonpreftype_hash = NULL;
 
 
@@ -81,3 +127,5 @@ void BKE_addon_pref_type_free(void)
 	BLI_ghash_free(global_addonpreftype_hash, NULL, MEM_freeN);
 	global_addonpreftype_hash = NULL;
 }
+
+/** \} */
diff --git a/source/blender/blenkernel/intern/blender.c b/source/blender/blenkernel/intern/blender.c
index e8a3387c153..a27f075a346 100644
--- a/source/blender/blenkernel/intern/blender.c
+++ b/source/blender/blenkernel/intern/blender.c
@@ -45,6 +45,7 @@
 #include "IMB_imbuf.h"
 #include "IMB_moviecache.h"
 
+#include "BKE_addon.h"
 #include "BKE_blender.h"  /* own include */
 #include "BKE_blender_version.h"  /* own include */
 #include "BKE_blendfile.h"
@@ -198,11 +199,7 @@ static void userdef_free_addons(UserDef *userdef)
 {
 	for (bAddon *addon = userdef->addons.first, *addon_next; addon; addon = addon_next) {
 		addon_next = addon->next;
-		if (addon->prop) {
-			IDP_FreeProperty(addon->prop);
-			MEM_freeN(addon->prop);
-		}
-		MEM_freeN(addon);
+		BKE_addon_free(addon);
 	}
 	BLI_listbase_clear(&userdef->addons);
 }