RNA: support extracting names from paths without allocating memory

Support extracting identifiers RNA paths into fixed size buffer
since the maximum size of the identifier is known all cases.

- Add BLI_str_unescape_ex to support limiting the destination buffer.
- Add BLI_str_quoted_substr to copy values into a fixed size buffer.

1 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/blenkernel/intern/action_bones.cc b/source/blender/blenkernel/intern/action_bones.cc
index b8d185e6a81..1f2b7360b70 100644
--- a/source/blender/blenkernel/intern/action_bones.cc
+++ b/source/blender/blenkernel/intern/action_bones.cc
@@ -28,6 +28,7 @@
 
 #include "DNA_action_types.h"
 #include "DNA_anim_types.h"
+#include "DNA_armature_types.h"
 
 #include "MEM_guardedalloc.h"
 
@@ -36,12 +37,11 @@ namespace blender::bke {
 void BKE_action_find_fcurves_with_bones(const bAction *action, FoundFCurveCallback callback)
 {
   LISTBASE_FOREACH (FCurve *, fcu, &action->curves) {
-    char *bone_name = BLI_str_quoted_substrN(fcu->rna_path, "pose.bones[");
-    if (!bone_name) {
+    char bone_name[MAXBONENAME];
+    if (!BLI_str_quoted_substr(fcu->rna_path, "pose.bones[", bone_name, sizeof(bone_name))) {
       continue;
     }
     callback(fcu, bone_name);
-    MEM_freeN(bone_name);
   }
 }