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#!@@SH@@
#
# opkhelper
# src/oh-gencontrol
# Generates a control directory with a control file and scripts.
#
# Copyright (C) 2012 Patrick "P. J." McDermott
#
# This program 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.
#
# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

. @@LIBDIR@@/locale
. @@LIBDIR@@/control
. @@LIBDIR@@/util

main()
{
	oh_locale_set
	oh_set_source_dir ..

	if [ "${#}" -ne 0 ]; then
		oh_usage
		exit 1
	fi

	for pkg in "${OH_SOURCE_DIR}/"*.pkg/; do

		pkg="${pkg#../}"
		pkg="${pkg%/}"

		# Load field values from cache properties.
		for name in ${OH_CONTROL_BINARY_FIELDS_REQUIRED} \
			${OH_CONTROL_BINARY_FIELDS_OPTIONAL}; do
			value="$(oh_cache "bin.${pkg}.control.${name}")"
			param="OH_CONTROL_BINARY_FIELD_$(echo "${name}" | \
				LC_CTYPE=C tr '[:lower:]-' '[:upper:]_')"
			# Escape the value.
			value="$(echo "${value}" | sed "s/'/'\\\\''/g")"
			eval "${param}='${value}'"
		done
		oh_control_gen_binary "${pkg}"

		install_maintainer_scripts "${pkg}"
		gen_conffiles "${pkg}"
		gen_md5sums "${pkg}"

	done
}

install_maintainer_scripts()
{
	pkg="${1}"

	for script in preinst postinst prerm postrm; do
		if [ -L "${OH_SOURCE_DIR}/${pkg}.pkg/${script}" ]; then
			target="$(ls -l "${OH_SOURCE_DIR}/${pkg}.pkg/${script}")"
			target="${target#* -> }"
			ln -s "${target}" "${OH_SOURCE_DIR}/tmp/${pkg}.control/${script}"
		else
			cp "${OH_SOURCE_DIR}/${pkg}.pkg/${script}" \
				"${OH_SOURCE_DIR}/tmp/${pkg}.control/${script}"
			chmod 755 "${OH_SOURCE_DIR}/tmp/${pkg}.control/${script}"
		fi
	done
}

gen_conffiles()
{
	if [ -d "${OH_SOURCE_DIR}/tmp/${pkg}.data/etc" ]; then
		find "${OH_SOURCE_DIR}/tmp/${pkg}.data/etc" -type f | \
			sed "^@"${OH_SOURCE_DIR}/tmp/${pkg}.data"@@" \
			>"${OH_SOURCE_DIR}/tmp/${pkg}.control/conffiles"
		if [ -z "$(head -n 1 \
			"${OH_SOURCE_DIR}/tmp/${pkg}.control/conffiles")" ]; then
			rm -f "${OH_SOURCE_DIR}/tmp/${pkg}.control/conffiles"
		else
			chmod 644 "${OH_SOURCE_DIR}/tmp/${pkg}.control/conffiles"
		fi
	fi
}

gen_md5sums()
{
	find "${OH_SOURCE_DIR}/tmp/${pkg}.data" -type f | sort | xargs md5sum | \
		sed "^@"${OH_SOURCE_DIR}/tmp/${pkg}.data"@@" \
		>"${OH_SOURCE_DIR}/tmp/${pkg}.control/md5sums"
	if [ -z "$(head -n 1 \
		"${OH_SOURCE_DIR}/tmp/${pkg}.control/md5sums")" ]; then
		rm -f "${OH_SOURCE_DIR}/tmp/${pkg}.control/md5sums"
	else
		chmod 644 "${OH_SOURCE_DIR}/tmp/${pkg}.control/md5sums"
	fi
}

main "${@}"