#!/bin/sh

: ${J=-j2}
: ${BUILDBASE=../buildfarm}
: ${branches='next master maint pu jch'}

force= with_dash= M= install= nodoc=
while	case "$1" in
	-pedantic) M=$1 ;;
	-force) force=$1 ;;
	-dash) with_dash=y ;;
	-noinstall) install=noinstall ;;
	-nodoc) nodoc=y ;;
	*) break ;;
	esac
do
	shift
done
test -f /bin/dash || with_dash=

for branch in $branches
do
	echo "** $branch **"
	revision=$(git show-ref -s --verify "refs/heads/$branch") || {
		echo "** No $branch"
		continue
	}
	test -d "$BUILDBASE/$branch" || {
		echo "** No $BUILDBASE/$branch"
		continue
	}

	private=$(git rev-parse -q --verify private-$branch 2>/dev/null)
	case $? in 0|1) ;; *) exit $? ;; esac

	if	installed=$($HOME/git-$branch/bin/git version) &&
		if version=$(expr "$installed" : '.*\.g\([0-9a-f]*\)$')
		then
			:
		elif version=v$(expr "$installed" : \
				'git version \(.*\)\.rc[0-9]*$')
		then
			version="$version"-$(expr "$installed" : \
				'git version .*\.\(rc[0-9]*\)$')
		else
			version=v$(expr "$installed" : 'git version \(.*\)')
		fi &&
		version=$(git rev-parse --verify "$version^0" 2>/dev/null) &&
		test "z$version" = "z$revision"
	then
		echo "* up-to-date version \"$installed\" is already installed from $branch"
		test -n "$force" || continue
	fi

	(
		case "$branch, $branches " in
		jch,*' next '*)
			if git diff --quiet --exit-code jch next
			then
				dotest=
			else
				dotest=test
			fi
			;;
		*)
			dotest=test ;;
		esac

		cd "$BUILDBASE/$branch"
		git reset --hard  &&
		git checkout "$branch" &&
		git reset --hard  || exit
		case "$private" in
		'')
			;;
		?*)
			git merge --squash --no-commit "$private" || {
				echo >&2 "Cannot apply private edition changes"
				git reset --hard
			}
			;;
		esac &&

		case "$with_dash" in
		y)
			case "$branch" in
			master | maint | next | jch)
				Meta/Make $M -- $J SHELL_PATH=/bin/dash $dotest
				;;
			esac
			;;
		esac &&

		Meta/Make $M -- $J $dotest &&
		{
			test -n "$nodoc" ||
			Meta/Make $M -- doc install-doc
		} &&
		{
			test z$install = znoinstall ||
			Meta/Make $M -- install
		} || exit $?

		git reset --hard
	) || break;

done