Method read

examples/source/custom_reader.cpp:25–30

	}

	bool read() {
		std::cout << "custom read: read #" << ++read_count
		          << std::endl;
		current_size = fread(buffer, 1, 2, f);
		return current_size > 0 && ferror(f) == 0;
	}

	~custom_reader() {
		std::fclose(f);