Function Sys_Load

engine/script/src/script_sys.cpp:246–276

loads a lua table from a file on disk * If the file exists, it must have been created by sys.save to be loaded. * This function will raise a Lua error if an error occurs while loading the file. * * @name sys.load * @param filename [type:string] file to read from * @return loaded [type:table] lua table, which is empty if the file could not be found *

     * ```
     */
    static int Sys_Load(lua_State* L)
    {
        const char* filename = luaL_checkstring(L, 1);
        FILE* file = fopen(filename, "rb");
        if (file == 0x0)
        {
            lua_newtable(L);
            return 1;
        }

        fseek(file, 0L, SEEK_END);
        uint32_t file_size = ftell(file);
        fseek(file, 0L, SEEK_SET);

        char* buffer = Sys_SetupTableSerializationBuffer(file_size);
        if (!buffer)
        {
            return luaL_error(L, "Could not allocate %d bytes for table deserialization.", file_size);
        }
        size_t nread = fread(buffer, 1, file_size, file);
        bool result = ferror(file) == 0;
        fclose(file);
        if (!result)
        {
            Sys_FreeTableSerializationBuffer(buffer);
            return luaL_error(L, "Could not read from the file %s.", filename);
        }
        PushTable(L, buffer, nread);
        Sys_FreeTableSerializationBuffer(buffer);
        return 1;
    }

    /*# check if a path exists
     * Check if a path exists