util.table: Add pack() function (this is already available in Lua 5.2+)

1 files changed, 15 insertions, 0 deletions

diff --git a/util-src/table.c b/util-src/table.c
index 6ad45dce..423f8f29 100644
--- a/util-src/table.c
+++ b/util-src/table.c
@@ -6,9 +6,24 @@ static int Lcreate_table(lua_State* L) {
 	return 1;
 }
 
+static int Lpack(lua_State* L) {
+	unsigned int n_args = lua_gettop(L);
+	lua_createtable(L, n_args, 1);
+	lua_insert(L, 1);
+	for(int arg = n_args; arg >= 1; arg--) {
+		lua_rawseti(L, 1, arg);
+	}
+	lua_pushinteger(L, n_args);
+	lua_setfield(L, -2, "n");
+	return 1;
+}
+
+
 int luaopen_util_table(lua_State* L) {
 	lua_newtable(L);
 	lua_pushcfunction(L, Lcreate_table);
 	lua_setfield(L, -2, "create");
+	lua_pushcfunction(L, Lpack);
+	lua_setfield(L, -2, "pack");
 	return 1;
 }