Add Chromium-only Blender WebEngine parity work

blender-5.2.0/source/blender/blenlib/intern/fileops.cc

@@ -0,0 +1,40 @@
+/* SPDX-FileCopyrightText: 2023 Blender Authors
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later */
+
+/** \file
+ * \ingroup bli
+ */
+
+#include "BLI_fileops.hh"
+
+#ifdef WIN32
+#  include "utfconv.hh"
+#endif
+
+namespace blender {
+
+fstream::fstream(const char *filepath, std::ios_base::openmode mode)
+{
+  this->open(filepath, mode);
+}
+
+fstream::fstream(const std::string &filepath, std::ios_base::openmode mode)
+{
+  this->open(filepath, mode);
+}
+
+void fstream::open(StringRefNull filepath, ios_base::openmode mode)
+{
+#ifdef WIN32
+  const char *filepath_cstr = filepath.c_str();
+  UTF16_ENCODE(filepath_cstr);
+  std::wstring filepath_wstr(filepath_cstr_16);
+  std::fstream::open(filepath_wstr.c_str(), mode);
+  UTF16_UN_ENCODE(filepath_cstr);
+#else
+  std::fstream::open(filepath, mode);
+#endif
+}
+
+}  // namespace blender