cppgc: mirror: Add copybara and migration scripts
The CL add two files: 1) copy.bara.sky - source file for copybara that needs to migrate cppgc from v8 repo to GitHub; 2) export_to_github.sh - top level bash script that runs copybara and generates CMake files if needed. Bug: v8:10724 Change-Id: I6a5f0ed1d007533914d578203a37fab2c3e9774a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2320651 Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Reviewed-by: Omer Katz <omerkatz@chromium.org> Commit-Queue: Anton Bikineev <bikineev@chromium.org> Cr-Commit-Position: refs/heads/master@{#69123}
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Anton Bikineev
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41
tools/cppgc/copy.bara.sky
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41
tools/cppgc/copy.bara.sky
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# Copyright 2020 the V8 project authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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INTERESTING_PATHS = [
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'AUTHORS',
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'CODE_OF_CONDUCT.md',
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'LICENSE',
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'samples/cppgc/**',
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'src/base/**',
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'src/heap/base/**',
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'src/heap/cppgc/**',
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'include/cppgc/**',
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'include/v8config.h',
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'include/v8-platform.h',
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'testing/**',
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'test/unittests/heap/cppgc/**',
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]
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origin_url = 'https://chromium.googlesource.com/v8/v8.git'
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# TODO(v8:10724): Add GitHub destination url.
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destination_url = 'TODO'
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# This workflow syncs cppgc source inside V8's googlesource repo with GitHub.
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core.workflow(
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name='default',
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origin=git.origin(
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url=origin_url,
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ref='master',
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),
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destination=git.destination(url=destination_url, ),
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origin_files=glob(INTERESTING_PATHS,
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exclude=['samples/cppgc/cppgc-for-v8-embedders.cc']),
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destination_files=glob(['**'], exclude=['CMakeLists.txt', 'cmake/**']),
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mode='SQUASH',
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authoring=authoring.pass_thru('V8 Team <v8-dev@googlegroups.com>'),
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transformations=[
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metadata.squash_notes(prefix='Export of V8 changes from ' +
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origin_url + '\n\nList of included changes:\n\n')
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]
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)
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121
tools/cppgc/export_to_github.sh
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tools/cppgc/export_to_github.sh
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#!/bin/sh
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#
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# Copyright 2020 the V8 project authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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source_dir=$(cd "$(dirname "$0")"; pwd -P)
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copybara_exe=copybara
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copybara_file="$source_dir/copy.bara.sky"
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init_history=''
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for arg in "$@"; do
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case $arg in
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--copybara-exe=*)
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copybara_exe="${arg#*=}"
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shift
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;;
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--copybara-file=*)
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copybara_file="${arg#*=}"
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shift
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;;
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--init-history)
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init_history='--init-history --force'
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shift
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;;
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*)
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echo -e "Usage:$arg"
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echo -e " export_to_github.sh [--copybara-exe=<path-to-copybara>]\n" \
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" [--copybara-file=<path-to-copy.bara.sky>]"
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exit 1
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esac
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done
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v8_origin="https://chromium.googlesource.com/v8/v8.git"
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v8_ref="master"
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NOCOLOR="\033[0m"
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RED="\033[0;31m"
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GREEN="\033[0;32m"
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BLUE="\033[0;34m"
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function fail {
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echo -e "${RED}${1}${NOCOLOR}" > /dev/stderr
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exit 1
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}
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function success {
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echo -e "${BLUE}${1}${NOCOLOR}" > /dev/stderr
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exit 0
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}
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function message {
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echo -e "${GREEN}${1}${NOCOLOR}" > /dev/stderr
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}
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function cleanup {
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if [ -d "$git_temp_dir" ]; then
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rm -rf $git_temp_dir
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fi
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}
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trap "exit 1" HUP INT PIPE QUIT TERM
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trap cleanup EXIT
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[ ! -x $copybara_exe ] && fail "$copybara_exe doesn't exist or was not found in PATH!"
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[ ! -f $copybara_file ] && fail "Input $copybara_file doesn't exist!"
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git_temp_dir=$(mktemp -d)
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if [[ ! "$git_temp_dir" || ! -d "$git_temp_dir" ]]; then
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fail "Failed to create temporary dir"
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fi
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if [[ $init_history ]]; then
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read -p "--init-history is only supposed to be used on the first export of \
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cppgc. Is this what is really intended? (y/N)" answer
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if [ "$answer" != "y" ]; then
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exit 0
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fi
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fi
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message "Running copybara..."
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$copybara_exe $init_history $copybara_file --dry-run --git-destination-path $git_temp_dir
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result=$?
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if [ "$result" -eq 4 ]; then
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success "Nothing needs to be done, exiting..."
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elif [ "$result" -ne 0 ]; then
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fail "Failed to run copybara"
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fi
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cd $git_temp_dir
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main_gn="BUILD.gn"
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test_gn="test/unittests/BUILD.gn"
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gen_cmake="tools/cppgc/gen_cmake.py"
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message "Checking out BUILD.gn files..."
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git remote add v8_origin "$v8_origin"
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git fetch --depth=1 v8_origin $v8_ref
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git checkout v8_origin/master -- "$main_gn" "$test_gn" "$gen_cmake" \
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|| fail "Failed to checkout BUILD.gn from V8 origin"
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message "Generating CMakeLists.txt..."
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cmakelists="$git_temp_dir/CMakeLists.txt"
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$gen_cmake --out=$cmakelists --main-gn=$main_gn --test-gn=$test_gn \
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|| fail "CMakeLists.txt generation has failed!"
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git rm -f $main_gn $test_gn $gen_cmake > /dev/null
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if git status -s | grep -q $(basename $cmakelists); then
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message "CMakeLists.txt needs to be changed"
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git add $cmakelists
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git commit --amend --no-edit > /dev/null
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else
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message "No changes in CMakeLists.txt need to be done"
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fi
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message "Pushing changes to GitHub..."
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git push copybara_remote master
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success "CppGC GitHub mirror was successfully updated"
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