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#!/bin/bash
# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#     * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
#     * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

set -ex

# change to root directory
cd $(dirname $0)/../..

DIRS=src/python
EXCLUSIONS='src/python/grpcio/grpc_*.py src/python/grpcio_health_checking/grpc_*.py src/python/grpcio_reflection/grpc_*.py src/python/grpcio_tests/grpc_*.py'

VIRTUALENV=python_format_venv

virtualenv $VIRTUALENV
PYTHON=`realpath $VIRTUALENV/bin/python`
$PYTHON -m pip install futures
$PYTHON -m pip install yapf==0.16.0

exclusion_args=""
for exclusion in $EXCLUSIONS; do
  exclusion_args="$exclusion_args --exclude $exclusion"
done

script_result=0
for dir in $DIRS; do
  tempdir=`mktemp -d`
  cp -RT $dir $tempdir
  $PYTHON -m yapf -i -r -p $exclusion_args $dir
  if ! diff -r $dir $tempdir; then
    script_result=1
  fi
  rm -rf $tempdir
done
exit $script_result