1#!/bin/bash 2 3# Copyright 2023 Google Inc. All rights reserved. 4# 5# Licensed under the Apache License, Version 2.0 (the "License"); 6# you may not use this file except in compliance with the License. 7# You may obtain a copy of the License at 8# 9# http://www.apache.org/licenses/LICENSE-2.0 10# 11# Unless required by applicable law or agreed to in writing, software 12# distributed under the License is distributed on an "AS IS" BASIS, 13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14# See the License for the specific language governing permissions and 15# limitations under the License. 16 17set -eu 18 19main() { 20 # Check if the last commit included changes to a .gn or .gni file, which need 21 # to be reflected in a .patch 22 if git diff --name-only HEAD~..HEAD | egrep -q '[.]gni?$'; then 23 echo "INFO: changes to a .gn|.gni file detected." 24 else 25 # no patch needed 26 exit 0 27 fi 28 29 # HACK: checking for the existence of rebase-merge may not always work as 30 # expected. 31 # TODO: find a better solution. One option is to parse `git status` output and 32 # grep for the "rebase in progress" string. 33 if [[ -d "$(git rev-parse --git-dir)/rebase-merge" ]]; then 34 # interactive rebase in progress. 35 echo "WARNING! .patch files are not updated during interactive rebase" 36 exit 0 37 fi 38 39 # There is no flag to skip the post-commit hook (--no-verify only works for 40 # pre-commit and commit-msg hooks). Briefly remove the executable 41 # permission to prevent recursion. 42 chmod -x .git/hooks/post-commit 43 # Ensure chmod +x is always run, even when script exits early 44 trap "chmod +x .git/hooks/post-commit" EXIT 45 46 # Remove any existing .patch files from the commit 47 local -r patches_dir="${ANDROID_BUILD_TOP}/external/cronet/patches" 48 git reset HEAD~ -- "${patches_dir}/*.patch" 49 git -c "advice.ignoredHook=false" commit --amend --no-edit 50 51 # Create patch (which only reflects changes to .gn and .gni files). 52 local -r number_of_patches=$(git ls-tree -r HEAD~ -- "${patches_dir}" | wc -l) 53 local -r patch_name=$(git format-patch -1 -N --start-number "${number_of_patches}" -o "${patches_dir}" HEAD -- "*.gn" "*.gni") 54 git add "${patch_name}" 55 git -c "advice.ignoredHook=false" commit --amend --no-edit 56 57 echo "INFO: a .patch file was added to your CL" 58} 59 60main "$@"; exit 61 62