#!/pxrpythonsubst
#
# Copyright 2017 Pixar
#
# Licensed under the Apache License, Version 2.0 (the "Apache License")
# with the following modification; you may not use this file except in
# compliance with the Apache License and the following modification to it:
# Section 6. Trademarks. is deleted and replaced with:
#
# 6. Trademarks. This License does not grant permission to use the trade
#    names, trademarks, service marks, or product names of the Licensor
#    and its affiliates, except as required to comply with Section 4(c) of
#    the License and to reproduce the content of the NOTICE file.
#
# You may obtain a copy of the Apache License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the Apache License with the above modification is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the Apache License for the specific
# language governing permissions and limitations under the Apache License.

import argparse
from pxr import Sdf, Usd

# Parse options.
parser = argparse.ArgumentParser()
parser.add_argument('layer', 
                    help = 'A path to a scene description layer.')
parser.add_argument('--session', dest='session', default='',
                    help = 'The asset path to the session layer.')
args = parser.parse_args()

rootLayerPath = args.layer
rootLayer = Sdf.Layer.FindOrOpen(rootLayerPath)

sessionLayer = None
if args.session:
    sessionLayerPath = args.session
    sessionLayer = Sdf.Layer.FindOrOpen(sessionLayerPath)

usd = Usd.Stage.Open(rootLayer, sessionLayer)
print usd.ExportToString(addSourceFileComment=False)
