- if (!ff_bits.empty()) {
- std::stringstream r_buffer;
- auto write_r_buffer = [&r_buffer](int i32) {
- // TODO: Don't assume we're on little endian
-#ifdef _WIN32
- int i32_be = _byteswap_ulong(i32);
-#else
- int i32_be = __builtin_bswap32(i32);
-#endif
- r_buffer.write(reinterpret_cast<const char*>(&i32_be), sizeof(i32_be));
- };
- write_r_buffer(ff_bits.size());
- int mergeability_class = 1;
- for (auto cell : ff_bits)
- write_r_buffer(mergeability_class++);
-
- f << "r";
- std::string buffer_str = r_buffer.str();
- // TODO: Don't assume we're on little endian
-#ifdef _WIN32
- int buffer_size_be = _byteswap_ulong(buffer_str.size());
-#else
- int buffer_size_be = __builtin_bswap32(buffer_str.size());
-#endif
- f.write(reinterpret_cast<const char*>(&buffer_size_be), sizeof(buffer_size_be));
- f.write(buffer_str.data(), buffer_str.size());
- }
-