bsnes/icarus/core/super-famicom.cpp

89 lines
3.8 KiB
C++

auto Icarus::superFamicomManifest(string location) -> string {
vector<uint8_t> buffer;
auto files = directory::files(location, "*.rom");
concatenate(buffer, {location, "program.rom"});
concatenate(buffer, {location, "data.rom" });
for(auto& file : files.match("slot-*.rom" )) concatenate(buffer, {location, file});
for(auto& file : files.match("*.boot.rom" )) concatenate(buffer, {location, file});
for(auto& file : files.match("*.program.rom")) concatenate(buffer, {location, file});
for(auto& file : files.match("*.data.rom" )) concatenate(buffer, {location, file});
return superFamicomManifest(buffer, location);
}
auto Icarus::superFamicomManifest(vector<uint8_t>& buffer, string location, bool* firmwareAppended) -> string {
string markup;
string digest = Hash::SHA256(buffer.data(), buffer.size()).digest();
if(settings["icarus/UseDatabase"].boolean() && !markup) {
for(auto node : database.superFamicom) {
if(node["sha256"].text() == digest) {
markup.append(node.text(), "\n sha256: ", digest, "\n");
break;
}
}
}
if(settings["icarus/UseHeuristics"].boolean() && !markup) {
bool hasMSU1 = file::exists({location, "msu1.rom"});
SuperFamicomCartridge cartridge{buffer.data(), buffer.size(), hasMSU1};
if(markup = cartridge.markup) {
if(firmwareAppended) *firmwareAppended = cartridge.firmware_appended;
markup.append("\n");
markup.append("information\n");
markup.append(" region: ", cartridge.region == SuperFamicomCartridge::Region::NTSC ? "NTSC" : "PAL", "\n");
markup.append(" title: ", Location::prefix(location), "\n");
markup.append(" sha256: ", digest, "\n");
markup.append(" note: ", "heuristically generated by icarus\n");
}
}
return markup;
}
auto Icarus::superFamicomManifestScan(vector<Markup::Node>& roms, Markup::Node node) -> void {
if(node["name"].text().endsWith(".rom")) roms.append(node);
for(auto leaf : node) superFamicomManifestScan(roms, leaf);
}
auto Icarus::superFamicomImport(vector<uint8_t>& buffer, string location) -> string {
auto name = Location::prefix(location);
auto source = Location::path(location);
string target{settings["Library/Location"].text(), "Super Famicom/", name, ".sfc/"};
//if(directory::exists(target)) return failure("game already exists");
bool firmwareAppended = true;
auto markup = superFamicomManifest(buffer, location, &firmwareAppended);
if(!markup) return failure("failed to parse ROM image");
auto document = BML::unserialize(markup);
vector<Markup::Node> roms;
superFamicomManifestScan(roms, document["board"]);
for(auto rom : roms) {
auto name = rom["name"].text();
auto size = rom["size"].natural();
if(name == "program.rom" || name == "data.rom" || firmwareAppended) continue;
if(file::size({source, name}) != size) return failure({"firmware (", name, ") missing or invalid"});
}
if(!directory::create(target)) return failure("library path unwritable");
if(file::exists({source, name, ".srm"}) && !file::exists({target, "save.ram"})) {
file::copy({source, name, ".srm"}, {target, "save.ram"});
}
if(settings["icarus/CreateManifests"].boolean()) file::write({target, "manifest.bml"}, markup);
uint offset = (buffer.size() & 0x7fff) == 512 ? 512 : 0; //skip header if present
for(auto rom : roms) {
auto name = rom["name"].text();
auto size = rom["size"].natural();
if(name == "program.rom" || name == "data.rom" || firmwareAppended) {
if(size > buffer.size() - offset) return failure("ROM image is missing data");
file::write({target, name}, buffer.data() + offset, size);
offset += size;
} else {
auto firmware = file::read({source, name});
file::write({target, name}, firmware);
}
}
return success(target);
}