[Bf-blender-cvs] [052073e9e4c] temp-pbvh-split: Fix T97947: USD will fail to export without file extension

[Philipp Oeser]

Commit: 052073e9e4c5f9be443c9adfe3a461c3d8f251ff
Author: Philipp Oeser
Date:   Mon May 9 15:19:48 2022 +0200
Branches: temp-pbvh-split
https://developer.blender.org/rB052073e9e4c5f9be443c9adfe3a461c3d8f251ff

Fix T97947: USD will fail to export without file extension

Now add a default ".usdc" file extension if no (or the wrong) extension
is given instead of presenting the user with the error that "no suitable
USD plugin to write is found".

This is in line with how other exporters do this.

Maniphest Tasks: T97947

Differential Revision: https://developer.blender.org/D14895

===================================================================

M	source/blender/editors/io/io_usd.c

===================================================================

diff --git a/source/blender/editors/io/io_usd.c b/source/blender/editors/io/io_usd.c
index 97ca9b026ec..609230eefea 100644
--- a/source/blender/editors/io/io_usd.c
+++ b/source/blender/editors/io/io_usd.c
@@ -190,6 +190,20 @@ static void wm_usd_export_draw(bContext *UNUSED(C), wmOperator *op)
   uiItemR(box, ptr, "use_instancing", 0, NULL, ICON_NONE);
 }
 
+static bool wm_usd_export_check(bContext *UNUSED(C), wmOperator *op)
+{
+  char filepath[FILE_MAX];
+  RNA_string_get(op->ptr, "filepath", filepath);
+
+  if (!BLI_path_extension_check_n(filepath, ".usd", ".usda", ".usdc", NULL)) {
+    BLI_path_extension_ensure(filepath, FILE_MAX, ".usdc");
+    RNA_string_set(op->ptr, "filepath", filepath);
+    return true;
+  }
+
+  return false;
+}
+
 void WM_OT_usd_export(struct wmOperatorType *ot)
 {
   ot->name = "Export USD";
@@ -200,6 +214,7 @@ void WM_OT_usd_export(struct wmOperatorType *ot)
   ot->exec = wm_usd_export_exec;
   ot->poll = WM_operator_winactive;
   ot->ui = wm_usd_export_draw;
+  ot->check = wm_usd_export_check;
 
   ot->flag = OPTYPE_REGISTER; /* No UNDO possible. */