nod/lib/nod.cpp

90 lines
2.4 KiB
C++

#include "nod/nod.hpp"
#include <cstdio>
#include "nod/DiscBase.hpp"
#include "nod/DiscGCN.hpp"
#include "nod/DiscWii.hpp"
namespace nod {
logvisor::Module LogModule("nod");
std::unique_ptr<IDiscIO> NewDiscIOISO(SystemStringView path);
std::unique_ptr<IDiscIO> NewDiscIOWBFS(SystemStringView path);
std::unique_ptr<IDiscIO> NewDiscIONFS(SystemStringView path);
std::unique_ptr<DiscBase> OpenDiscFromImage(SystemStringView path, bool& isWii) {
/* Temporary file handle to determine image type */
std::unique_ptr<IFileIO> fio = NewFileIO(path);
if (!fio->exists()) {
LogModule.report(logvisor::Error, fmt(_SYS_STR("Unable to open '{}'")), path);
return {};
}
std::unique_ptr<IFileIO::IReadStream> rs = fio->beginReadStream();
if (!rs)
return {};
isWii = false;
std::unique_ptr<IDiscIO> discIO;
uint32_t magic = 0;
if (rs->read(&magic, 4) != 4) {
LogModule.report(logvisor::Error, fmt(_SYS_STR("Unable to read magic from '{}'")), path);
return {};
}
using SignedSize = std::make_signed<SystemString::size_type>::type;
const auto dotPos = SignedSize(path.rfind('.'));
const auto slashPos = SignedSize(path.rfind("/\\"));
if (magic == nod::SBig((uint32_t)'WBFS')) {
discIO = NewDiscIOWBFS(path);
isWii = true;
} else if (path.size() > 4 && dotPos != -1 && dotPos > slashPos &&
!path.compare(slashPos + 1, 4, "hif_") &&
!path.compare(dotPos, path.size() - dotPos, ".nfs")) {
discIO = NewDiscIONFS(path);
isWii = true;
} else {
rs->seek(0x18, SEEK_SET);
rs->read(&magic, 4);
magic = nod::SBig(magic);
if (magic == 0x5D1C9EA3) {
discIO = NewDiscIOISO(path);
isWii = true;
} else {
rs->read(&magic, 4);
magic = nod::SBig(magic);
if (magic == 0xC2339F3D)
discIO = NewDiscIOISO(path);
}
}
if (!discIO) {
LogModule.report(logvisor::Error, fmt(_SYS_STR("'{}' is not a valid image")), path);
return {};
}
bool err = false;
std::unique_ptr<DiscBase> ret;
if (isWii) {
ret = std::make_unique<DiscWii>(std::move(discIO), err);
if (err) {
return nullptr;
}
return ret;
}
ret = std::make_unique<DiscGCN>(std::move(discIO), err);
if (err) {
return nullptr;
}
return ret;
}
std::unique_ptr<DiscBase> OpenDiscFromImage(SystemStringView path) {
bool isWii;
return OpenDiscFromImage(path, isWii);
}
} // namespace nod