1 files changed, 37 insertions, 0 deletions
diff --git a/source/blender/blenloader/intern/versioning_common.cc b/source/blender/blenloader/intern/versioning_common.cc
index f5083b8e259..208c02b60d1 100644
--- a/source/blender/blenloader/intern/versioning_common.cc
+++ b/source/blender/blenloader/intern/versioning_common.cc
@@ -20,9 +20,15 @@
 /* allow readfile to use deprecated functionality */
 #define DNA_DEPRECATED_ALLOW
 
+#include <cstring>
+
 #include "DNA_screen_types.h"
 
 #include "BLI_listbase.h"
+#include "BLI_string.h"
+
+#include "BKE_lib_id.h"
+#include "BKE_main.h"
 
 #include "MEM_guardedalloc.h"
 
@@ -48,3 +54,34 @@ ARegion *do_versions_add_region_if_not_found(ListBase *regionbase,
   BLI_insertlinkafter(regionbase, link_after_region, new_region);
   return new_region;
 }
+
+/**
+ * Rename if the ID doesn't exist.
+ *
+ * \return the ID (if found).
+ */
+ID *do_versions_rename_id(Main *bmain,
+                          const short id_type,
+                          const char *name_src,
+                          const char *name_dst)
+{
+  /* We can ignore libraries */
+  ListBase *lb = which_libbase(bmain, id_type);
+  ID *id = nullptr;
+  LISTBASE_FOREACH (ID *, idtest, lb) {
+    if (idtest->lib == nullptr) {
+      if (STREQ(idtest->name + 2, name_src)) {
+        id = idtest;
+      }
+      if (STREQ(idtest->name + 2, name_dst)) {
+        return nullptr;
+      }
+    }
+  }
+  if (id != nullptr) {
+    BLI_strncpy(id->name + 2, name_dst, sizeof(id->name) - 2);
+    /* We know it's unique, this just sorts. */
+    BLI_libblock_ensure_unique_name(bmain, id->name);
+  }
+  return id;
+}