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core: Reduce string copies in GetGameFileFromPath() 

Eliminates some minor string churn where applicable. Also eliminates an
unnecessary vector copy.
This commit is contained in:
Lioncash 2020-11-26 14:03:27 -05:00
parent 322349e8cc
commit 9d3d0ae999
1 changed files with 22 additions and 12 deletions
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36
src/core/core.cpp
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@ -92,33 +92,43 @@ FileSys::VirtualFile GetGameFileFromPath(const FileSys::VirtualFilesystem& vfs,
std::string dir_name;
std::string filename;
Common::SplitPath(path, &dir_name, &filename, nullptr);
if (filename == "00") {
const auto dir = vfs->OpenDirectory(dir_name, FileSys::Mode::Read);
std::vector<FileSys::VirtualFile> concat;
for (u8 i = 0; i < 0x10; ++i) {
auto next = dir->GetFile(fmt::format("{:02X}", i));
if (next != nullptr)
for (u32 i = 0; i < 0x10; ++i) {
const auto file_name = fmt::format("{:02X}", i);
auto next = dir->GetFile(file_name);
if (next != nullptr) {
concat.push_back(std::move(next));
else {
next = dir->GetFile(fmt::format("{:02x}", i));
if (next != nullptr)
concat.push_back(std::move(next));
else
} else {
next = dir->GetFile(file_name);
if (next == nullptr) {
break;
}
concat.push_back(std::move(next));
}
}
if (concat.empty())
if (concat.empty()) {
return nullptr;
return FileSys::ConcatenatedVfsFile::MakeConcatenatedFile(concat, dir->GetName());
}
if (Common::FS::IsDirectory(path))
return vfs->OpenFile(path + "/" + "main", FileSys::Mode::Read);
return FileSys::ConcatenatedVfsFile::MakeConcatenatedFile(std::move(concat),
dir->GetName());
}
if (Common::FS::IsDirectory(path)) {
return vfs->OpenFile(path + "/main", FileSys::Mode::Read);
}
return vfs->OpenFile(path, FileSys::Mode::Read);
}
struct System::Impl {
explicit Impl(System& system)
: kernel{system}, fs_controller{system}, memory{system},