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# Copyright 2018 Google
#
# 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.
# Within Travis, runs the given command if the current project has changes
# worth building.
#
# Examines the following Travis-supplied environment variables:
# - TRAVIS_PULL_REQUEST - the PR number or false for full build
# - TRAVIS_COMMIT_RANGE - the range of commits under test; empty on a new
# branch
#
# Also examines the following configured environment variables that should be
# specified in an env: block
# - PROJECT - Firebase or Firestore
# - METHOD - xcodebuild or cmake
function check_changes() {
if git diff --name-only "$TRAVIS_COMMIT_RANGE" | grep -Eq "$1"; then
run=true
fi
}
run=false
# To force Travis to do a full run, change the "false" to "{PR number}" like
# if [[ "$TRAVIS_PULL_REQUEST" == "904" ]]; then
if [[ "$TRAVIS_PULL_REQUEST" == "false" ]]; then
# Full builds should run everything
run=true
elif [[ -z "$TRAVIS_COMMIT_RANGE" ]]; then
# First builds on a branch should also run everything
run=true
else
case "$PROJECT-$METHOD" in
Firebase-*)
check_changes '^(Firebase|Functions|GoogleUtilities|Example)'
;;
Firestore-xcodebuild|Firestore-pod-lib-lint)
check_changes '^Firestore'
;;
Firestore-cmake)
check_changes '^Firestore/(core|third_party)'
;;
*)
echo "Unknown project-method combo" 1>&2
echo " PROJECT=$PROJECT" 1>&2
echo " METHOD=$METHOD" 1>&2
exit 1
;;
esac
fi
# Always rebuild if Travis configuration and/or build scripts changed.
check_changes '^.travis.yml'
check_changes '^Gemfile.lock'
check_changes '^scripts/(build|if_changed).sh'
if [[ "$run" == true ]]; then
"$@"
else
echo "skipped $*"
fi
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