git-tool

#!/bin/bash
#
# Copyright (c) 2020, The OpenThread Authors.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. Neither the name of the copyright holder nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# Description:
# A tool to download projects with the ability to apply dependent PRs.
#
 
set -euxo pipefail
 
apply_dependencies()
{
 local project_name
 
 project_name=$(git remote get-url origin | grep -oE '[^/:]+/[^/:]+\.git$' | cut -d. -f1)
 echo "project name: ${project_name}"
 
 git config user.name || git config user.name 'OpenThread Git'
 git config user.email || git config user.email 'git@openthread'
 
 while read -r dependency; do
 echo "${dependency}"
 depends_on_pr="$(echo "${dependency}" | tr -d '\r\n' | cut -d# -f2)"
 echo "pr: #${depends_on_pr}"
 git pull --no-edit origin "pull/${depends_on_pr}/merge"
 done < <(grep -E "^Depends-On: *${project_name}" || true)
}
 
get_pr_body()
{
 local pr
 
 [[ ${GITHUB_ACTIONS+x} && ${GITHUB_REF-} =~ ^refs/pull/[0-9]+/merge ]] || {
 echo 'Not a pull request.' >&2
 return 0
 }
 
 pr="$(echo "${GITHUB_REF}" | cut -d/ -f3)"
 
 # do not print GITHUB_TOKEN
 set +x
 curl -H "authorization: Bearer ${GITHUB_TOKEN}" -H 'content-type: application/json' \
 "https://api.github.com/repos/${GITHUB_REPOSITORY}/pulls/${pr}" \
 | jq -r .body
 set -x
}
 
try_update()
{
 cd "$1"
 
 get_pr_body | apply_dependencies
}
 
try_clone()
{
 local dest_dir
 
 dest_dir="$(git clone "$@" 2>&1 | tee | cut -d\' -f2)"
 
 cd "${dest_dir}"
 get_pr_body | apply_dependencies
}
 
print_help()
{
 echo "EXAMPLES:
 $0 http://github.com/openthread/ot-br-posix.git
 $0 http://github.com/openthread/ot-ns.git --depth 1 /tmp/ot-ns"
}
 
main()
{
 if [[ $# == 0 ]]; then
 print_help
 return 0
 fi
 
 case $1 in
 update)
 shift
 try_update "$@"
 ;;
 clone)
 shift
 try_clone "$@"
 ;;
 *)
 print_help
 return 1
 ;;
 esac
}
 
main "$@"