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#!/bin/sh

## live-build(7) - System Build Scripts
## Copyright (C) 2006-2012 Daniel Baumann <daniel@debian.org>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.


set -e

# Including common functions
. "${LIVE_BUILD}/scripts/build.sh" > /dev/null 2>&1 || . /usr/lib/live/build.sh

# Setting static variables
DESCRIPTION="$(Echo 'utility to build Debian Live systems')"
HELP="FIXME"
USAGE="FIXME"

case "${1}" in
	-h|--help)
		if [ -x "$(which man 2>/dev/null)" ]
		then
			man lb
			exit 0
		else
			${0} --usage
			exit 0
		fi
		;;

	""|-u|--usage)
		Usage
		;;

	-v|--version)
		echo "${VERSION}"
		exit 0
		;;

	*)
		COMMAND="lb_${1}"
		shift

		ENV=""

		for _FILE in config/environment config/environment.binary
		do
			if [ -e "${_FILE}" ]
			then
				ENV="${ENV} $(grep -v '^#' ${_FILE})"
			fi
		done

		if [ -x "${LIVE_BUILD}/scripts/build/${COMMAND}" ]
		then
			# User has live-build copied locally in the system
			SCRIPT="${LIVE_BUILD}/scripts/build/${COMMAND}"
		elif [ -x "local/live-build/scripts/build/${COMMAND}" ]
		then
			# User has live-build embedded in the config
			SCRIPT="local/live-build/scripts/build/${COMMAND}"
		elif [ -x /usr/lib/live/build/${COMMAND} ]
		then
			# User has live-build installed in the system
			SCRIPT=/usr/lib/live/build/"${COMMAND}"
		elif [ -x "$(which ${COMMAND} 2>/dev/null)" ]
		then
			# User has live-build commands in path
			SCRIPT="${COMMAND}"
		else
			Echo_error "no such script: ${COMMAND}"
			exit 1
		fi

		Echo "[%s] %s" "$(date +'%F %T')" "${COMMAND} ${@}"
		${ENV} exec "${SCRIPT}" "${@}"
		;;
esac