#!/bin/sh



#variables
DRYRUN=0
PACKAGE="configure"
PREFIX="/usr/local"
LIBEXECDIR="$PREFIX/libexec"
PROGNAME="configure-update"
PROJECTCONF="project.conf"
VERBOSE=1
#executables
CP="cp -f"
DEBUG=
FIND="find"


#functions
#configure_update
_configure_update()
{
	target="$1"
	scriptdir="$LIBEXECDIR/$PACKAGE/scripts"

	if [ ! -f "$target/$PROJECTCONF" ]; then
		_error ""
		exit $?
	fi
	(cd "$scriptdir" && $DEBUG $FIND */ -name '*.sh') | while read script; do
		[ -f "$target/$script" ] || continue
		_info "Updating script $script"
		if [ $DRYRUN -eq 0 ]; then
			$DEBUG $CP "$scriptdir/$script" "$target/$script" \
								|| return 2
		fi
	done
}


#debug
_debug()
{
	echo "$@" 1>&3
	"$@"
}


#error
_error()
{
	echo "$PROGNAME: $@" 1>&2
	return 2
}


#info
_info()
{
	[ $VERBOSE -ge 1 ] && echo "$PROGNAME: $@"
}


#usage
_usage()
{
	echo "Usage: $PROGNAME -nqv [target...]" 1>&2
	return 1
}


#main
while getopts "O:nqv" name; do
	case $name in
		O)
			export "${OPTARG%%=*}"="${OPTARG#*=}"
			;;
		n)
			DRYRUN=1
			;;
		q)
			VERBOSE=0
			;;
		v)
			VERBOSE=$((VERBOSE + 1))
			;;
		?)
			_usage
			exit $?
			;;
	esac
done
shift $(($OPTIND - 1))

exec 3>&1
if [ $# -eq 0 ]; then
	_configure_update "."
else
	for target in "$@"; do
		_configure_update "$target"
	done
fi