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#!/bin/bash -e

# Copyright (c) 2012, AT&T Labs, Yun Mao <yunmao@gmail.com>
# All Rights Reserved.
# Copyright 2012 Hewlett-Packard Development Company, L.P.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

rm -fr .test
mkdir -p .test/old/config
mkdir -p .test/old/out
mkdir -p .test/new/config
mkdir -p .test/new/out
cd .test
if [ -e /usr/zuul-env/bin/zuul-cloner ];
then
    /usr/zuul-env/bin/zuul-cloner -m ../tools/run-compare-clonemap.yaml --cache-dir /opt/git https://git.openstack.org openstack-infra/project-config
else
    git clone --depth=1 https://git.openstack.org/openstack-infra/project-config
fi
cp -r project-config/jenkins/jobs/* old/config
cp -r project-config/jenkins/jobs/* new/config
cd ..
GITHEAD=`git rev-parse HEAD`

# First generate output from HEAD~1
git checkout HEAD~1
tox -e compare-xml-old

# Then use that as a reference to compare against HEAD
git checkout $GITHEAD
tox -e compare-xml-new

CHANGED=0
for x in `(cd .test/old/out && find -type f)`
do
    if ! diff -u .test/old/out/$x .test/new/out/$x >/dev/null 2>&1
    then
	CHANGED=1
	echo "============================================================"
	echo $x
	echo "------------------------------------------------------------"
    fi
    diff -u .test/old/out/$x .test/new/out/$x || /bin/true
done

echo
echo "You are in detached HEAD mode. If you are a developer"
echo "and not very familiar with git, you might want to do"
echo "'git checkout branch-name' to go back to your branch."

if [ "$CHANGED" -eq "1" ]; then
    exit 1
fi
exit 0