bsnes/ananke/super-famicom.cpp

string Ananke::createSuperFamicomDatabase(vector<uint8_t> &buffer, Markup::Node &document, const string &manifest) {
  string pathname = {
    userpath(), "Emulation/Super Famicom/",
    document["release/information/name"].text(),
    " (", document["release/information/region"].text(), ")",
    " (", document["release/information/revision"].text(), ")",
    ".sfc/"
  };
  directory::create(pathname);

  //strip "release" root node from database entry
  string markup = manifest;
  markup.replace("\n  ", "\n");
  markup.replace("information", "\ninformation");
  markup.ltrim<1>("release\n");

  file::write({pathname, "manifest.bml"}, markup);

  unsigned offset = 0;
  for(auto &node : document["release/information/configuration"]) {
    if(node.name != "rom") continue;
    string name = node["name"].text();
    unsigned size = node["size"].decimal();
    file::write({pathname, name}, buffer.data() + offset, size);
    offset += size;
  }

  return pathname;
}

string Ananke::createSuperFamicomHeuristic(vector<uint8_t> &buffer) {
  string pathname = {
    userpath(), "Emulation/Super Famicom/",
    nall::basename(information.name),
    " (unverified).sfc/"
  };
  directory::create(pathname);

  if((buffer.size() & 0x7fff) == 512) buffer.remove(0, 512);  //strip copier header, if present

  SuperFamicomCartridge info(buffer.data(), buffer.size());
  string markup = info.markup;
  if(!information.manifest.empty()) markup = information.manifest;  //override with embedded beat manifest, if one exists

  file::write({pathname, "manifest.bml"}, markup);

  if(!markup.position("spc7110")) {
    file::write({pathname, "program.rom"}, buffer);
  } else {
    file::write({pathname, "program.rom"}, buffer.data(), 0x100000);
    file::write({pathname, "data.rom"}, buffer.data() + 0x100000, buffer.size() - 0x100000);
  }

  auto copyFirmware = [&](const string &name, unsigned programSize, unsigned dataSize) {
    auto buffer = file::read({information.path, name});  //try and read from the containing directory
    if(buffer.size() == 0) buffer = extractFile(name);  //try and read from the containing archive, if one exists
    if(buffer.size() == 0) {
      MessageWindow::critical(Window::none(), {
        "Error: required firmware ", name, " not found. Game will not be playable!\n\n",
        "You must obtain this file, and place it in the same folder as this game."
      });
      return;
    }

    string basename = nall::basename(name);
    if(programSize) file::write({pathname, basename, ".program.rom"}, buffer.data(), programSize);
    if(dataSize) file::write({pathname, basename, ".data.rom"}, buffer.data() + programSize, dataSize);
  };

  if(markup.position("dsp1.program.rom" )) copyFirmware("dsp1.rom",  0x001800, 0x000800);
  if(markup.position("dsp1b.program.rom")) copyFirmware("dsp1b.rom", 0x001800, 0x000800);
  if(markup.position("dsp2.program.rom" )) copyFirmware("dsp2.rom",  0x001800, 0x000800);
  if(markup.position("dsp3.program.rom" )) copyFirmware("dsp3.rom",  0x001800, 0x000800);
  if(markup.position("dsp4.program.rom" )) copyFirmware("dsp4.rom",  0x001800, 0x000800);
  if(markup.position("st010.program.rom")) copyFirmware("st010.rom", 0x00c000, 0x001000);
  if(markup.position("st011.program.rom")) copyFirmware("st011.rom", 0x00c000, 0x001000);
  if(markup.position("st018.program.rom")) copyFirmware("st018.rom", 0x020000, 0x008000);
  if(markup.position("cx4.data.rom"     )) copyFirmware("cx4.rom",   0x000000, 0x000c00);

  return pathname;
}

string Ananke::openSuperFamicom(vector<uint8_t> &buffer) {
  string sha256 = nall::sha256(buffer.data(), buffer.size());

  string databaseText = string::read({configpath(), "ananke/database/Super Famicom.bml"}).rtrim("\n");
  lstring databaseItem = databaseText.split("\n\n");

  for(auto &item : databaseItem) {
    item.append("\n");
    auto document = Markup::Document(item);

    if(document["release/information/sha256"].text() == sha256) {
      return createSuperFamicomDatabase(buffer, document, item);
    }
  }

  return createSuperFamicomHeuristic(buffer);
}