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, 4 insertions, 4 deletions

diff --git a/source/blender/editors/armature/pose_select.c b/source/blender/editors/armature/pose_select.c
index 4db8569a7d2..e5b8983af93 100644
--- a/source/blender/editors/armature/pose_select.c
+++ b/source/blender/editors/armature/pose_select.c
@@ -1106,12 +1106,12 @@ static bool pose_select_same_keyingset(bContext *C, ReportList *reports, bool ex
     for (ksp = ks->paths.first; ksp; ksp = ksp->next) {
       /* only items related to this object will be relevant */
       if ((ksp->id == &ob->id) && (ksp->rna_path != NULL)) {
-        char *boneName = BLI_str_quoted_substrN(ksp->rna_path, "bones[");
-        if (boneName == NULL) {
+        bPoseChannel *pchan = NULL;
+        char boneName[sizeof(pchan->name)];
+        if (!BLI_str_quoted_substr(ksp->rna_path, "bones[", boneName, sizeof(boneName))) {
           continue;
         }
-        bPoseChannel *pchan = BKE_pose_channel_find_name(pose, boneName);
-        MEM_freeN(boneName);
+        pchan = BKE_pose_channel_find_name(pose, boneName);
 
         if (pchan) {
           /* select if bone is visible and can be affected */