Function json_integer_option

LuaSTGPlus/LuaExtensions/cjson4lua/lua_cjson.c:220–239

Process integer options for configuration functions */

/* Process integer options for configuration functions */
static int json_integer_option(lua_State *l, int optindex, int *setting,
                               int min, int max)
{
    char errmsg[64];
    int value;

    if (!lua_isnil(l, optindex)) {
		int result;
        value = luaL_checkinteger(l, optindex);
		result = _snprintf(errmsg, sizeof(errmsg), "expected integer between %d and %d", min, max);
		if (result == sizeof(errmsg) || result < 0)
			errmsg[sizeof(errmsg) - 1] = '\0';
        luaL_argcheck(l, min <= value && value <= max, 1, errmsg);
        *setting = value;
    }

    lua_pushinteger(l, *setting);

    return 1;
}

/* Process enumerated arguments for a configuration function */
static int json_enum_option(lua_State *l, int optindex, int *setting,