utils: ipc: add parser script

On some systems, python2 might still be the default python. Enforce
python3 by wrapping the mojo parser script in a python3 script. This
also has the benefit of not modifying mojo.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

utils/ipc/parser.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright (C) 2020, Google Inc.
+#
+# Author: Paul Elder <paul.elder@ideasonboard.com>
+#
+# parser.py - Run mojo parser with python3
+
+import os
+import sys
+
+# TODO set sys.pycache_prefix for >= python3.8
+sys.dont_write_bytecode = True
+
+# Make sure that mojom_parser.py can import mojom
+sys.path.append(f'{os.path.dirname(__file__)}/mojo/public/tools/mojom')
+
+import mojo.public.tools.mojom.mojom_parser as parser
+
+parser.Run(sys.argv[1:])