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# opkbuild
# lib/metadata
# Functions for parsing and validating package metadata.
#
# 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/>.

[ -n "${_OB_METADATA_SM}" ] && return 0
_OB_METADATA_SM='true'

ob_use 'metadata/@@METADATA@@'

ob_validate_source_name()
{
	_ob_local _obvsn_name

	if [ ${#} -eq 1 ]; then
		_obvsn_name="${1}"
	else
		_ob_return 125
		return ${?}
	fi

	_ob_metadata_do 'validate_source_name' "${_obvsn_name}"

	_ob_return ${?}
	return ${?}
}

ob_validate_binary_name()
{
	_ob_local _obvbn_name

	if [ ${#} -eq 1 ]; then
		_obvbn_name="${1}"
	else
		_ob_return 125
		return ${?}
	fi

	_ob_metadata_do 'validate_binary_name' "${_obvbn_name}"

	_ob_return ${?}
	return ${?}
}

ob_parse_version()
{
	_ob_local _obpv_opt _obpv_upstreamver_var _obpv_distrev_var _obpv_version

	while getopts 'u:d:' _obpv_opt; do
		case "${_obpv_opt}" in
			u)
				_obpv_upstreamver_var="${OPTARG}"
				if ! _ob_validate_var_name "${_obpv_upstreamver_var}"; then
					_ob_return 125
					return ${?}
				fi
				;;
			d)
				_obpv_distrev_var="${OPTARG}"
				if ! _ob_validate_var_name "${_obpv_distrev_var}"; then
					_ob_return 125
					return ${?}
				fi
				;;
			?)
				_ob_return 125
				return ${?}
				;;
		esac
	done
	shift $(($OPTIND - 1))

	if [ ${#} -eq 1 ]; then
		_obpv_version="${1}"
	else
		_ob_return 125
		return ${?}
	fi

	if ! _ob_metadata_do 'validate_version' "${_obpv_version}"; then
		_ob_return 1
		return ${?}
	fi

	if [ -n "${_obpv_upstreamver_var}" ]; then
		eval ${_obpv_upstreamver_var}="$(_ob_metadata_do 'get_upstreamver' \
			"${_obpv_version}")"
	fi
	if [ -n "${_obpv_distrev_var}" ]; then
		eval ${_obpv_distrev_var}="$(_ob_metadata_do 'get_distrev' \
			"${_obpv_version}")"
	fi

	_ob_return 0
	return ${?}
}

ob_get_system_arch()
{
	_ob_local

	if [ ${#} -gt 0 ]; then
		_ob_return 125
		return ${?}
	fi

	_ob_metadata_do 'get_system_arch'

	_ob_return ${?}
	return ${?}
}

ob_get_system_plat()
{
	_ob_local

	if [ ${#} -gt 0 ]; then
		_ob_return 125
		return ${?}
	fi

	_ob_metadata_do 'get_system_plat'

	_ob_return ${?}
	return ${?}
}

ob_match_arch()
{
	_ob_local _obma_arch _obma_arch_field _obma_a \
		_obma_a_pat_norm _obma_a_pat_hyph

	if [ ${#} -eq 2 ]; then
		_obma_arch="${1}"
		_obma_arch_field="${2}"
	else
		_ob_return 125
		return ${?}
	fi

	for _obma_a in ${_obma_arch_field}; do

		# "all" == "all"
		if [ "${_obma_arch}" = 'all' ]; then
			if [ "${_obma_a}" = 'all' ]; then
				_ob_return 0
				return ${?}
			else
				continue
			fi
		fi

		# "foo-bar-baz" == "any"
		if [ "${_obma_a}" = 'any' ]; then
			_ob_return 0
			return ${?}
		fi

		# Generate an ERE to match hyphenated architectures.
		_obma_a_ere="$(echo "${_obma_a}" | \
			sed 's/^any-/[^-]+-/;s/-any-/-[^-]+-/g;s/-any$/-[^-]+/g')"

		# "foo-bar-baz" == "foo-any-any"
		if echo "${_obma_arch}" | grep -E "${_obma_a_ere}"; then
			_ob_return 0
			return ${?}
		fi

	done

	# Nothing matched.
	_ob_return 1
	return ${?}
}

ob_match_plat()
{
	_ob_local _obmp_plat _obmp_plat_field _obmp_p

	if [ ${#} -eq 2 ]; then
		_obmp_plat="${1}"
		_obmp_plat_field="${2}"
	else
		_ob_return 125
		return ${?}
	fi

	for _obmp_p in ${_obmp_plat_field}; do
		if [ "${_obmp_plat}" = 'all' ]; then
			if [ "${_obmp_p}" = 'all' ]; then
				_ob_return 0
				return ${?}
			else
				continue
			fi
		fi
		if [ "${_obmp_p}" = 'any' ]; then
			_ob_return 0
			return ${?}
		fi
	done

	_ob_return 1
	return ${?}
}

_ob_metadata_do()
{
	_ob_local _obmd_func

	_obmd_func="${1}"
	shift 1

	"_ob_${_obmd_func}_@@METADATA@@" "${@}"

	_ob_return ${?}
	return ${?}
}