ossystems-release-tool

#!/usr/bin/env bash

opts_long_argument_list=(
	"help"
	"major"
	"minor"
	"patch"
	"assume-yes"
)

opts_argument_list=(
	"M"
	"m"
	"p"
	"y"
)

die() {
	while [[ $# -gt 0 ]]; do
		echo -e "ERROR: $1"
		shift 1
	done
	exit 1
}

usage() {
	echo "Create a release."
	echo
	echo "Syntax: $(basename "$0") [-M|m|p|y|h|--major|minor|patch|assume-yes|help] [<version>]"
	echo "options:"
	echo "-M, --major       create a major release"
	echo "-m, --minor       create a minor release"
	echo "-p, --patch       create a patch release"
	echo "-y, --assume-yes  assume Yes for tag confirmation"
	echo "-h, --help        print this help menu."
}

## Increments the part of the string
# $1: version itself
# $2: number of part: 0 – major, 1 – minor, 2 – patch
increment_version() {
	local delimiter=.
	local array=($(echo "$1" | tr $delimiter '\n'))
	array[$2]=$(printf %0${#array[$2]}d $((array[$2] + 1)))
	if [ $2 -lt 2 ]; then array[2]=$(printf %0${#array[2]}d 0); fi
	if [ $2 -lt 1 ]; then array[1]=$(printf %0${#array[1]}d 0); fi
	echo $(
		local IFS=$delimiter
		echo "${array[*]}"
	)
}

# read arguments
opts=$(getopt --longoptions "$(printf "%s," "${opts_long_argument_list[@]}")" \
	--name "$(basename "$0")" \
	--options "$(printf "%s," "${opts_argument_list[@]}")" \
	-- "$@")

eval set -- $opts

if [[ $# == 1 ]]; then
	usage
	exit 0
fi

platform_dir=$(dirname $(readlink -f "$0"))/../..

while [[ $# -gt 0 ]]; do
	case "$1" in
	"--")
		shift 1
		;;

	"-M" | "--major")
		[ -z "$version_inc" ] || die "Conflicting version bump."
		version_inc="0"
		shift 1
		;;

	"-m" | "--minor")
		[ -z "$version_inc" ] || die "Conflicting version bump."
		version_inc="1"
		shift 1
		;;

	"-p" | "--patch")
		[ -z "$version_inc" ] || die "Conflicting version bump."
		version_inc="2"
		shift 1
		;;

	"-y" | "--assume-yes")
		assume_yes="true"
		shift 1
		;;

	"-h" | "--help")
		usage
		exit 0
		;;

	*)
		[ -z "$version_inc" ] || die "Conflicting version requirements."
		version="$1"
		shift 1
		;;
	esac
done

source_diff=$(repo status | grep project | awk '{print $2}')
if [ -n "$source_diff" ]; then
	die "Release aborted! Uncommitted files in the following layers:\n$source_diff"
fi

echo "Checking layers... "
cd $platform_dir/sources
for dir in $(ls -1); do
	is_pushed_remote=$(git --git-dir=$dir/.git branch -r --contains $(git --git-dir=$dir/.git log --pretty=format:"%H" -1))
	if [ -z "$is_pushed_remote" ]; then
		die "This branch contains unmerged commits: $dir"
	fi
done

cd $platform_dir/.repo/manifests
current_version=$(git describe 2>/dev/null | sed 's,-.*,,g')
if [ -z "$current_version" ] && [ -z "$version" ]; then
	die "No previous version exist, pass a version as argument."
elif [ -n "$version" ]; then
	tag="$version"
elif [ -n "$version_inc" ]; then
	tag=$(increment_version "$current_version" "$version_inc")
fi

existing_tag=$(git tag -l "$tag")
if [ -n "$existing_tag" ]; then
	die "$tag already exists. Aborting..."
fi

echo -n "Will create '$tag' tag. Proceed? (y/N): "
if [ -z "$assume_yes" ]; then
	read option
else
	echo "y"
	option="y"
fi

case $option in
"y" | "Y")
	repo manifest -r --output=default.xml.tmp
	mv default.xml.tmp default.xml

	git add default.xml
	git commit -m "default.xml: update for release $tag" --no-edit
	if ! git tag -a -m "Release $tag" $tag HEAD; then
		git reset --hard HEAD~1
		die "Failed to create $tag. Aborting..."
	fi

	git revert HEAD --no-edit
	git commit --amend -m "default.xml: resetting revisions for development after $tag"
	git push origin $tag
	git push -v origin HEAD:$(git config --get branch.default.merge)
	;;
"n" | "N" | "")
	echo "Aborting..."
	;;
*)
	die ""
	;;
esac