add rpmeval.sh to test macro evaluation

rpmeval.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/bash
+# Copyright (C) 2023 Maxwell G <maxwell@gtmx.me>
+#
+# SPDX-License-Identifier: GPL-1.0-or-later
+
+set -euo pipefail
+
+HERE="$(dirname "$(readlink -f "${0}")")"
+_macro_dir="${HERE}/rpm/macros.d"
+MACRO_DIR="${MACRO_DIR-"${_macro_dir}"}"
+_macro_lua_dir="${HERE}/rpm/lua"
+MACRO_LUA_DIR="${MACRO_LUA_DIR-"${_macro_lua_dir}"}"
+args=("rpm")
+if [ -n "${MACRO_DIR}" ]; then
+    _default_macros_dir="$(rpm --showrc | grep 'Macro path' | awk -F ': ' '{print $2}')"
+    args+=("--macros" "${_default_macros_dir}:${MACRO_DIR}/macros.*")
+fi
+if [ -n "${MACRO_LUA_DIR}" ]; then
+    _default_lua_dir="$(rpm -E '%{lua: print(package.path)}')"
+    _path="$(printf "'%s'" "${MACRO_LUA_DIR}/?.lua;${_default_lua_dir}")"
+    args+=("-E" "%{lua: package.path = ${_path} }")
+fi
+
+exec "${args[@]}" "$@"