#!/usr/bin/bash
#
#   variable.sh - Check that variables are or are not arrays as appropriate
#
#   Copyright (c) 2014-2018 Pacman Development Team <pacman-dev@archlinux.org>
#
#   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 2 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 "$LIBMAKEPKG_LINT_PKGBUILD_VARIABLE_SH" ]] && return
LIBMAKEPKG_LINT_PKGBUILD_VARIABLE_SH=1

LIBRARY=${LIBRARY:-'/usr/share/makepkg'}

source "$LIBRARY/util/message.sh"
source "$LIBRARY/util/pkgbuild.sh"

lint_pkgbuild_functions+=('lint_variable')


lint_variable() {
	# TODO: refactor - similar arrays are used elsewhere
	local array=(arch backup checkdepends groups license noextract options
	             validpgpkeys)
	local arch_array=(conflicts depends makedepends md5sums optdepends provides
	                  replaces sha1sums sha224sums sha256sums sha384sums sha512sums
			  source)
	local string=(changelog epoch install pkgdesc pkgrel pkgver url)

	local i a v pkg keys out bad ret=0

	# global variables
	for i in ${array[@]} ${arch_array[@]}; do
		eval "keys=(\"\${!$i[@]}\")"
		if (( ${#keys[*]} > 0 )); then
			if ! is_array $i; then
				error "$(gettext "%s should be an array")" "$i"
				ret=1
			fi
		fi
	done

	for a in ${arch[@]}; do
		[[ $a == "any" ]] && continue

		for i in ${arch_array[@]}; do
			v="${i}_${a}"
			eval "keys=(\"\${!${v}[@]}\")"
			if (( ${#keys[*]} > 0 )); then
				if ! is_array $v; then
					error "$(gettext "%s_%s should be an array")" "$i" "$a"
					ret=1
				fi
			fi
		done
	done

	for i in ${string[@]}; do
		eval "keys=(\"\${!$i[@]}\")"
		if (( ${#keys[*]} > 0 )); then
			if is_array $i; then
				error "$(gettext "%s should not be an array")" "$i"
				ret=1
			fi
		fi
	done

	# package function variables
	for pkg in ${pkgname[@]}; do
		for i in ${array[@]} ${arch_array[@]}; do
			if extract_function_variable "package_$pkg" $i 0 out; then
				error "$(gettext "%s should be an array")" "$i"
				ret=1
			fi
		done

		for a in ${arch[@]}; do
			[[ $a == "any" ]] && continue

			for i in ${arch_array[@]}; do
				if extract_function_variable "package_$pkg" "${i}_${a}" 0 out; then
					error "$(gettext "%s_%s should be an array")" "$i" "$a"
					ret=1
				fi
			done
		done

		for i in ${string[@]}; do
			if extract_function_variable "package_$pkg" $i 1 out; then
				error "$(gettext "%s should not be an array")" "$i"
				ret=1
			fi
		done
	done

	return $ret
}
