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vfs_concat/vfs_layered: Remove friend declarations from ConcatenatedVfsFile 

Given these are only added to the class to allow those functions to
access the private constructor, it's a better approach to just make them
static functions in the interface, to make the dependency explicit.
This commit is contained in:
Lioncash 2018-09-25 17:38:16 -04:00
parent 14e2df5610
commit 28bef31ea8
8 changed files with 59 additions and 61 deletions
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2
src/core/core.cpp
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@ -64,7 +64,7 @@ FileSys::VirtualFile GetGameFileFromPath(const FileSys::VirtualFilesystem& vfs,
if (concat.empty())
return nullptr;
return FileSys::ConcatenateFiles(concat, dir->GetName());
return FileSys::ConcatenatedVfsFile::MakeConcatenatedFile(concat, dir->GetName());
}
return vfs->OpenFile(path, FileSys::Mode::Read);

5
src/core/file_sys/patch_manager.cpp
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@ -90,10 +90,9 @@ static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType t
layers.push_back(std::move(extracted));
const auto layered = LayerDirectories(layers);
auto layered = LayeredVfsDirectory::MakeLayeredDirectory(std::move(layers));
if (layered != nullptr) {
auto packed = CreateRomFS(layered);
auto packed = CreateRomFS(std::move(layered));
if (packed != nullptr) {
LOG_INFO(Loader, " RomFS: LayeredFS patches applied successfully");

2
src/core/file_sys/registered_cache.cpp
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@ -125,7 +125,7 @@ VirtualFile RegisteredCache::OpenFileOrDirectoryConcat(const VirtualDir& dir,
if (concat.empty())
return nullptr;
file = FileSys::ConcatenateFiles(concat, concat.front()->GetName());
file = ConcatenatedVfsFile::MakeConcatenatedFile(concat, concat.front()->GetName());
}
return file;

2
src/core/file_sys/romfs.cpp
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@ -134,7 +134,7 @@ VirtualFile CreateRomFS(VirtualDir dir) {
return nullptr;
RomFSBuildContext ctx{dir};
return ConcatenateFiles(0, ctx.Build(), dir->GetName());
return ConcatenatedVfsFile::MakeConcatenatedFile(0, ctx.Build(), dir->GetName());
}
} // namespace FileSys

67
src/core/file_sys/vfs_concat.cpp
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@ -39,6 +39,41 @@ ConcatenatedVfsFile::ConcatenatedVfsFile(std::map<u64, VirtualFile> files_, std:
ConcatenatedVfsFile::~ConcatenatedVfsFile() = default;
VirtualFile ConcatenatedVfsFile::MakeConcatenatedFile(std::vector<VirtualFile> files,
std::string name) {
if (files.empty())
return nullptr;
if (files.size() == 1)
return files[0];
return std::shared_ptr<VfsFile>(new ConcatenatedVfsFile(std::move(files), std::move(name)));
}
VirtualFile ConcatenatedVfsFile::MakeConcatenatedFile(u8 filler_byte,
std::map<u64, VirtualFile> files,
std::string name) {
if (files.empty())
return nullptr;
if (files.size() == 1)
return files.begin()->second;
const auto last_valid = --files.end();
for (auto iter = files.begin(); iter != last_valid;) {
const auto old = iter++;
if (old->first + old->second->GetSize() != iter->first) {
files.emplace(old->first + old->second->GetSize(),
std::make_shared<StaticVfsFile>(filler_byte, iter->first - old->first -
old->second->GetSize()));
}
}
// Ensure the map starts at offset 0 (start of file), otherwise pad to fill.
if (files.begin()->first != 0)
files.emplace(0, std::make_shared<StaticVfsFile>(filler_byte, files.begin()->first));
return std::shared_ptr<VfsFile>(new ConcatenatedVfsFile(std::move(files), std::move(name)));
}
std::string ConcatenatedVfsFile::GetName() const {
if (files.empty())
return "";
@ -101,36 +136,4 @@ bool ConcatenatedVfsFile::Rename(std::string_view name) {
return false;
}
VirtualFile ConcatenateFiles(std::vector<VirtualFile> files, std::string name) {
if (files.empty())
return nullptr;
if (files.size() == 1)
return files[0];
return std::shared_ptr<VfsFile>(new ConcatenatedVfsFile(std::move(files), std::move(name)));
}
VirtualFile ConcatenateFiles(u8 filler_byte, std::map<u64, VirtualFile> files, std::string name) {
if (files.empty())
return nullptr;
if (files.size() == 1)
return files.begin()->second;
const auto last_valid = --files.end();
for (auto iter = files.begin(); iter != last_valid;) {
const auto old = iter++;
if (old->first + old->second->GetSize() != iter->first) {
files.emplace(old->first + old->second->GetSize(),
std::make_shared<StaticVfsFile>(filler_byte, iter->first - old->first -
old->second->GetSize()));
}
}
// Ensure the map starts at offset 0 (start of file), otherwise pad to fill.
if (files.begin()->first != 0)
files.emplace(0, std::make_shared<StaticVfsFile>(filler_byte, files.begin()->first));
return std::shared_ptr<VfsFile>(new ConcatenatedVfsFile(std::move(files), std::move(name)));
}
} // namespace FileSys

19
src/core/file_sys/vfs_concat.h
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@ -14,16 +14,20 @@ namespace FileSys {
// Class that wraps multiple vfs files and concatenates them, making reads seamless. Currently
// read-only.
class ConcatenatedVfsFile : public VfsFile {
friend VirtualFile ConcatenateFiles(std::vector<VirtualFile> files, std::string name);
friend VirtualFile ConcatenateFiles(u8 filler_byte, std::map<u64, VirtualFile> files,
std::string name);
ConcatenatedVfsFile(std::vector<VirtualFile> files, std::string name);
ConcatenatedVfsFile(std::map<u64, VirtualFile> files, std::string name);
public:
~ConcatenatedVfsFile() override;
/// Wrapper function to allow for more efficient handling of files.size() == 0, 1 cases.
static VirtualFile MakeConcatenatedFile(std::vector<VirtualFile> files, std::string name);
/// Convenience function that turns a map of offsets to files into a concatenated file, filling
/// gaps with a given filler byte.
static VirtualFile MakeConcatenatedFile(u8 filler_byte, std::map<u64, VirtualFile> files,
std::string name);
std::string GetName() const override;
std::size_t GetSize() const override;
bool Resize(std::size_t new_size) override;
@ -40,11 +44,4 @@ private:
std::string name;
};
// Wrapper function to allow for more efficient handling of files.size() == 0, 1 cases.
VirtualFile ConcatenateFiles(std::vector<VirtualFile> files, std::string name);
// Convenience function that turns a map of offsets to files into a concatenated file, filling gaps
// with a given filler byte.
VirtualFile ConcatenateFiles(u8 filler_byte, std::map<u64, VirtualFile> files, std::string name);
} // namespace FileSys

15
src/core/file_sys/vfs_layered.cpp
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@ -8,7 +8,13 @@
namespace FileSys {
VirtualDir LayerDirectories(std::vector<VirtualDir> dirs, std::string name) {
LayeredVfsDirectory::LayeredVfsDirectory(std::vector<VirtualDir> dirs, std::string name)
: dirs(std::move(dirs)), name(std::move(name)) {}
LayeredVfsDirectory::~LayeredVfsDirectory() = default;
VirtualDir LayeredVfsDirectory::MakeLayeredDirectory(std::vector<VirtualDir> dirs,
std::string name) {
if (dirs.empty())
return nullptr;
if (dirs.size() == 1)
@ -17,11 +23,6 @@ VirtualDir LayerDirectories(std::vector<VirtualDir> dirs, std::string name) {
return std::shared_ptr<VfsDirectory>(new LayeredVfsDirectory(std::move(dirs), std::move(name)));
}
LayeredVfsDirectory::LayeredVfsDirectory(std::vector<VirtualDir> dirs, std::string name)
: dirs(std::move(dirs)), name(std::move(name)) {}
LayeredVfsDirectory::~LayeredVfsDirectory() = default;
std::shared_ptr<VfsFile> LayeredVfsDirectory::GetFileRelative(std::string_view path) const {
for (const auto& layer : dirs) {
const auto file = layer->GetFileRelative(path);
@ -41,7 +42,7 @@ std::shared_ptr<VfsDirectory> LayeredVfsDirectory::GetDirectoryRelative(
out.push_back(std::move(dir));
}
return LayerDirectories(std::move(out));
return MakeLayeredDirectory(std::move(out));
}
std::shared_ptr<VfsFile> LayeredVfsDirectory::GetFile(std::string_view name) const {

8
src/core/file_sys/vfs_layered.h
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@ -9,20 +9,18 @@
namespace FileSys {
// Wrapper function to allow for more efficient handling of dirs.size() == 0, 1 cases.
VirtualDir LayerDirectories(std::vector<VirtualDir> dirs, std::string name = "");
// Class that stacks multiple VfsDirectories on top of each other, attempting to read from the first
// one and falling back to the one after. The highest priority directory (overwrites all others)
// should be element 0 in the dirs vector.
class LayeredVfsDirectory : public VfsDirectory {
friend VirtualDir LayerDirectories(std::vector<VirtualDir> dirs, std::string name);
LayeredVfsDirectory(std::vector<VirtualDir> dirs, std::string name);
public:
~LayeredVfsDirectory() override;
/// Wrapper function to allow for more efficient handling of dirs.size() == 0, 1 cases.
static VirtualDir MakeLayeredDirectory(std::vector<VirtualDir> dirs, std::string name = "");
std::shared_ptr<VfsFile> GetFileRelative(std::string_view path) const override;
std::shared_ptr<VfsDirectory> GetDirectoryRelative(std::string_view path) const override;
std::shared_ptr<VfsFile> GetFile(std::string_view name) const override;