libmakepkg: check if PKGBUILD variables are arrays or not as appropriate

When extracting variables from PKGBUILD (e.g. for .SRCINFO creation) we make
assumptions about whether variables are arrays or not.  This adds a check to
the PKGBUILD linter to ensure variables are arrays or not as appropriate.

Signed-off-by: Allan McRae <allan@archlinux.org>

scripts/Makefile.am

@@ -73,6 +73,7 @@ LIBMAKEPKG_IN = \
 	libmakepkg/lint_pkgbuild/provides.sh \
 	libmakepkg/lint_pkgbuild/source.sh \
 	libmakepkg/lint_pkgbuild/util.sh \
+	libmakepkg/lint_pkgbuild/variable.sh \
 	libmakepkg/source.sh \
 	libmakepkg/source/bzr.sh \
 	libmakepkg/source/file.sh \

scripts/libmakepkg/lint_pkgbuild/variable.sh.in

@@ -0,0 +1,65 @@
+#!/bin/bash
+#
+#   variable.sh - Check that variables are or are not arrays as appropriate
+#
+#   Copyright (c) 2014-2015 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:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/message.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 sha256sums sha384sums sha512sums source)
+	local string=(changelog epoch install pkgdesc pkgrel pkgver url)
+
+	local i
+	for i in ${array[@]}; do
+		if grep -w -q -e "$i=[^(]" -e "$i+=[^(]" "$BUILDSCRIPT"; then
+			error "$(gettext "%s should be an array")" "$i"
+			ret=1
+		fi
+	done
+
+	for a in ${arch[@]}; do
+		[[ $a == "any" ]] && continue
+
+		for i in ${arch_array[@]}; do
+			if grep -w -q -e "$i_$a=[^(]" -e "$i_$a+=[^(]" "$BUILDSCRIPT"; then
+				error "$(gettext "%s_%s should be an array")" "$i" "$a"
+				ret=1
+			fi
+		done
+	done
+
+	for i in ${string[@]}; do
+		if grep -w -q -e "$i=(" -e "$i+=(" "$BUILDSCRIPT"; then
+			error "$(gettext "%s should not be an array")" "$i"
+			ret=1
+		fi
+	done
+}

scripts/po/POTFILES.in

@@ -13,6 +13,7 @@ scripts/libmakepkg/lint_package/build_references.sh.in
 scripts/libmakepkg/lint_package/missing_backup.sh.in
 scripts/libmakepkg/lint_pkgbuild.sh.in
 scripts/libmakepkg/lint_pkgbuild/arch.sh.in
+scripts/libmakepkg/lint_pkgbuild/array.sh.in
 scripts/libmakepkg/lint_pkgbuild/backup.sh.in
 scripts/libmakepkg/lint_pkgbuild/changelog.sh.in
 scripts/libmakepkg/lint_pkgbuild/epoch.sh.in