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# "opkg" command
#
# Copyright (C) 2014, 2015  Patrick McDermott
#
# This file is part of the ProteanOS Development Kit.
#
# The ProteanOS Development Kit is free software: you can redistribute
# it and/or modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# The ProteanOS Development Kit is distributed in the hope that it
# will be useful, but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with the ProteanOS Development Kit.  If not, see
# <http://www.gnu.org/licenses/>.

cmd_opkg_opks=

cmd_opkg_main()
{
	local root=
	local dev=
	local first_arg=
	local install_cmd=
	local arg=
	local new_fname=

	if [ ${#} -lt 1 ]; then
		print_cmd_usage 'opkg' >&2
		return 1
	fi

	root="${1}"
	shift 1

	dev=''
	if is_block "${root}"; then
		dev="${root}"
		if ! root="$(block_mount "${dev}")"; then
			return 2
		fi
	fi

	first_arg=true
	install_cmd=false
	cmd_opkg_opks=''
	for arg in "${@}"; do
		if ${first_arg}; then
			set --
			first_arg=false
		fi
		if ${install_cmd}; then
			case "${arg}" in
				*.opk|*.ipk|*.deb)
					if ! [ -e "${arg}" ]; then
						set -- "${@}" "${arg}"
						continue
					fi
					rand
					new_fname="/tmp/prokit.${rand_x}.opk"
					cmd_opkg_opks="$(printf '%s %s\n' \
						"${cmd_opkg_opks}" \
						"${root}${new_fname}")"
					cp "${arg}" "${root}${new_fname}"
					set -- "${@}" "${new_fname}"
					;;
				*)
					set -- "${@}" "${arg}"
					;;
			esac
		else
			set -- "${@}" "${arg}"
			if [ "x${arg}" = 'xinstall' ]; then
				install_cmd=true
			fi
		fi
	done

	if ! profile_detect "${root}"; then
		[ "x${dev}" != 'x' ] && block_umount "${root}"
		return 2
	fi

	if ! session_begin "${root}" . cmd_opkg_fini false; then
		cmd_opkg_fini
		[ "x${dev}" != 'x' ] && block_umount "${root}"
		return 2
	fi

	session_exec opkg "${@}"

	cmd_opkg_fini
	session_end

	[ "x${dev}" != 'x' ] && block_umount "${root}"

	return 0
}

cmd_opkg_fini()
{
	case "${cmd_opkg_opks}" in
		*[!\ ]*)
			rm -f ${cmd_opkg_opks}
			# Hack to avoid this code branch if the function is
			# called again in response to a signal.
			cmd_opkg_opks=''
			;;
	esac
}

cmd_opkg_register()
{
	register_cmd 'opkg'
}
__init cmd_opkg_register