4 # Copyright (c) 2020 Project CHIP Authors
6 # Licensed under the Apache License, Version 2.0 (the "License");
7 # you may not use this file except in compliance with the License.
8 # You may obtain a copy of the License at
10 # http://www.apache.org/licenses/LICENSE-2.0
12 # Unless required by applicable law or agreed to in writing, software
13 # distributed under the License is distributed on an "AS IS" BASIS,
14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 # See the License for the specific language governing permissions and
16 # limitations under the License.
19 # Internal script for pull_submodules.sh. Not intended to be used directly.
23 CHIP_ROOT="$(dirname "$0")/../.."
25 if [[ -z "$name" || -z "$toplevel" ]]; then
26 echo >&2 "This script should be run via update_submodules.sh"
30 get_submodule_config() {
31 git config --file "$toplevel/.gitmodules" "submodule.$name.$1"
34 SUBMODULE_URL=$(get_submodule_config url)
35 SUBMODULE_BRANCH=$(get_submodule_config branch)
36 SUBMODULE_PATH=$(get_submodule_config path)
38 git fetch --quiet "$SUBMODULE_URL" "$SUBMODULE_BRANCH"
40 HEAD_COMMIT=$(git -C "$toplevel" rev-parse HEAD:"$SUBMODULE_PATH")
41 FETCH_COMMIT="$(git rev-parse FETCH_HEAD)"
43 if [[ "$HEAD_COMMIT" == "$FETCH_COMMIT" ]]; then
47 git checkout --quiet "$FETCH_COMMIT"
48 git -C "$toplevel" add "$SUBMODULE_PATH"
50 echo " git -C $SUBMODULE_PATH log $(git rev-parse --short "$HEAD_COMMIT")..$(git rev-parse --short "$FETCH_COMMIT")"