Cleanup: factor out "set default filepath" into a ED_fileselect_ensure_default_filepath

Follow up to D15904, a bunch of places had exact same logic for
"is filepath set? if not, set some default one", so factor all that out
into a separate ED_fileselect_ensure_default_filepath function.

1 files changed, 21 insertions, 0 deletions

diff --git a/source/blender/editors/space_file/filesel.c b/source/blender/editors/space_file/filesel.c
index e42e1e98660..c569a2b57a6 100644
--- a/source/blender/editors/space_file/filesel.c
+++ b/source/blender/editors/space_file/filesel.c
@@ -1385,3 +1385,24 @@ ScrArea *ED_fileselect_handler_area_find_any_with_op(const wmWindow *win)
 
   return NULL;
 }
+
+void ED_fileselect_ensure_default_filepath(struct bContext *C,
+                                           struct wmOperator *op,
+                                           const char *extension)
+{
+  if (!RNA_struct_property_is_set_ex(op->ptr, "filepath", false)) {
+    struct Main *bmain = CTX_data_main(C);
+    char filepath[FILE_MAX];
+    const char *blendfile_path = BKE_main_blendfile_path(bmain);
+
+    if (blendfile_path[0] == '\0') {
+      BLI_strncpy(filepath, DATA_("untitled"), sizeof(filepath));
+    }
+    else {
+      BLI_strncpy(filepath, blendfile_path, sizeof(filepath));
+    }
+
+    BLI_path_extension_replace(filepath, sizeof(filepath), extension);
+    RNA_string_set(op->ptr, "filepath", filepath);
+  }
+}