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vfs: Move vfs files to their own directory
This commit is contained in:
FearlessTobi
Liam
552
src/core/file_sys/vfs/vfs.cpp
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552
src/core/file_sys/vfs/vfs.cpp
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@ -0,0 +1,552 @@
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// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <algorithm>
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#include <numeric>
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#include <string>
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#include "common/fs/path_util.h"
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#include "core/file_sys/mode.h"
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#include "core/file_sys/vfs/vfs.h"
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namespace FileSys {
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VfsFilesystem::VfsFilesystem(VirtualDir root_) : root(std::move(root_)) {}
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VfsFilesystem::~VfsFilesystem() = default;
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std::string VfsFilesystem::GetName() const {
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return root->GetName();
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}
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bool VfsFilesystem::IsReadable() const {
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return root->IsReadable();
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}
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bool VfsFilesystem::IsWritable() const {
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return root->IsWritable();
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}
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VfsEntryType VfsFilesystem::GetEntryType(std::string_view path_) const {
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const auto path = Common::FS::SanitizePath(path_);
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if (root->GetFileRelative(path) != nullptr)
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return VfsEntryType::File;
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if (root->GetDirectoryRelative(path) != nullptr)
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return VfsEntryType::Directory;
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return VfsEntryType::None;
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}
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VirtualFile VfsFilesystem::OpenFile(std::string_view path_, Mode perms) {
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const auto path = Common::FS::SanitizePath(path_);
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return root->GetFileRelative(path);
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}
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VirtualFile VfsFilesystem::CreateFile(std::string_view path_, Mode perms) {
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const auto path = Common::FS::SanitizePath(path_);
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return root->CreateFileRelative(path);
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}
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VirtualFile VfsFilesystem::CopyFile(std::string_view old_path_, std::string_view new_path_) {
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const auto old_path = Common::FS::SanitizePath(old_path_);
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const auto new_path = Common::FS::SanitizePath(new_path_);
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// VfsDirectory impls are only required to implement copy across the current directory.
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if (Common::FS::GetParentPath(old_path) == Common::FS::GetParentPath(new_path)) {
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if (!root->Copy(Common::FS::GetFilename(old_path), Common::FS::GetFilename(new_path)))
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return nullptr;
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return OpenFile(new_path, Mode::ReadWrite);
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}
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// Do it using RawCopy. Non-default impls are encouraged to optimize this.
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const auto old_file = OpenFile(old_path, Mode::Read);
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if (old_file == nullptr)
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return nullptr;
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auto new_file = OpenFile(new_path, Mode::Read);
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if (new_file != nullptr)
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return nullptr;
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new_file = CreateFile(new_path, Mode::Write);
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if (new_file == nullptr)
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return nullptr;
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if (!VfsRawCopy(old_file, new_file))
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return nullptr;
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return new_file;
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}
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VirtualFile VfsFilesystem::MoveFile(std::string_view old_path, std::string_view new_path) {
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const auto sanitized_old_path = Common::FS::SanitizePath(old_path);
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const auto sanitized_new_path = Common::FS::SanitizePath(new_path);
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// Again, non-default impls are highly encouraged to provide a more optimized version of this.
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auto out = CopyFile(sanitized_old_path, sanitized_new_path);
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if (out == nullptr)
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return nullptr;
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if (DeleteFile(sanitized_old_path))
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return out;
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return nullptr;
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}
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bool VfsFilesystem::DeleteFile(std::string_view path_) {
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const auto path = Common::FS::SanitizePath(path_);
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auto parent = OpenDirectory(Common::FS::GetParentPath(path), Mode::Write);
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if (parent == nullptr)
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return false;
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return parent->DeleteFile(Common::FS::GetFilename(path));
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}
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VirtualDir VfsFilesystem::OpenDirectory(std::string_view path_, Mode perms) {
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const auto path = Common::FS::SanitizePath(path_);
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return root->GetDirectoryRelative(path);
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}
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VirtualDir VfsFilesystem::CreateDirectory(std::string_view path_, Mode perms) {
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const auto path = Common::FS::SanitizePath(path_);
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return root->CreateDirectoryRelative(path);
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}
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VirtualDir VfsFilesystem::CopyDirectory(std::string_view old_path_, std::string_view new_path_) {
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const auto old_path = Common::FS::SanitizePath(old_path_);
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const auto new_path = Common::FS::SanitizePath(new_path_);
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// Non-default impls are highly encouraged to provide a more optimized version of this.
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auto old_dir = OpenDirectory(old_path, Mode::Read);
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if (old_dir == nullptr)
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return nullptr;
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auto new_dir = OpenDirectory(new_path, Mode::Read);
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if (new_dir != nullptr)
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return nullptr;
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new_dir = CreateDirectory(new_path, Mode::Write);
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if (new_dir == nullptr)
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return nullptr;
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for (const auto& file : old_dir->GetFiles()) {
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const auto x = CopyFile(old_path + '/' + file->GetName(), new_path + '/' + file->GetName());
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if (x == nullptr)
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return nullptr;
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}
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for (const auto& dir : old_dir->GetSubdirectories()) {
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const auto x =
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CopyDirectory(old_path + '/' + dir->GetName(), new_path + '/' + dir->GetName());
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if (x == nullptr)
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return nullptr;
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}
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return new_dir;
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}
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VirtualDir VfsFilesystem::MoveDirectory(std::string_view old_path, std::string_view new_path) {
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const auto sanitized_old_path = Common::FS::SanitizePath(old_path);
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const auto sanitized_new_path = Common::FS::SanitizePath(new_path);
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// Non-default impls are highly encouraged to provide a more optimized version of this.
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auto out = CopyDirectory(sanitized_old_path, sanitized_new_path);
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if (out == nullptr)
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return nullptr;
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if (DeleteDirectory(sanitized_old_path))
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return out;
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return nullptr;
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}
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bool VfsFilesystem::DeleteDirectory(std::string_view path_) {
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const auto path = Common::FS::SanitizePath(path_);
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auto parent = OpenDirectory(Common::FS::GetParentPath(path), Mode::Write);
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if (parent == nullptr)
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return false;
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return parent->DeleteSubdirectoryRecursive(Common::FS::GetFilename(path));
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}
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VfsFile::~VfsFile() = default;
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std::string VfsFile::GetExtension() const {
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return std::string(Common::FS::GetExtensionFromFilename(GetName()));
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}
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VfsDirectory::~VfsDirectory() = default;
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std::optional<u8> VfsFile::ReadByte(std::size_t offset) const {
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u8 out{};
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const std::size_t size = Read(&out, sizeof(u8), offset);
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if (size == 1) {
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return out;
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}
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return std::nullopt;
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}
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std::vector<u8> VfsFile::ReadBytes(std::size_t size, std::size_t offset) const {
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std::vector<u8> out(size);
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std::size_t read_size = Read(out.data(), size, offset);
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out.resize(read_size);
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return out;
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}
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std::vector<u8> VfsFile::ReadAllBytes() const {
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return ReadBytes(GetSize());
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}
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bool VfsFile::WriteByte(u8 data, std::size_t offset) {
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return Write(&data, 1, offset) == 1;
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}
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std::size_t VfsFile::WriteBytes(const std::vector<u8>& data, std::size_t offset) {
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return Write(data.data(), data.size(), offset);
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}
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std::string VfsFile::GetFullPath() const {
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if (GetContainingDirectory() == nullptr)
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return '/' + GetName();
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return GetContainingDirectory()->GetFullPath() + '/' + GetName();
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}
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VirtualFile VfsDirectory::GetFileRelative(std::string_view path) const {
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auto vec = Common::FS::SplitPathComponents(path);
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if (vec.empty()) {
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return nullptr;
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}
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if (vec.size() == 1) {
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return GetFile(vec[0]);
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}
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auto dir = GetSubdirectory(vec[0]);
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for (std::size_t component = 1; component < vec.size() - 1; ++component) {
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if (dir == nullptr) {
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return nullptr;
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}
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dir = dir->GetSubdirectory(vec[component]);
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}
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if (dir == nullptr) {
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return nullptr;
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}
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return dir->GetFile(vec.back());
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}
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VirtualFile VfsDirectory::GetFileAbsolute(std::string_view path) const {
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if (IsRoot()) {
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return GetFileRelative(path);
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}
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return GetParentDirectory()->GetFileAbsolute(path);
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}
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VirtualDir VfsDirectory::GetDirectoryRelative(std::string_view path) const {
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auto vec = Common::FS::SplitPathComponents(path);
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if (vec.empty()) {
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// TODO(DarkLordZach): Return this directory if path is '/' or similar. Can't currently
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// because of const-ness
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return nullptr;
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}
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auto dir = GetSubdirectory(vec[0]);
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for (std::size_t component = 1; component < vec.size(); ++component) {
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if (dir == nullptr) {
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return nullptr;
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}
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dir = dir->GetSubdirectory(vec[component]);
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}
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return dir;
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}
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VirtualDir VfsDirectory::GetDirectoryAbsolute(std::string_view path) const {
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if (IsRoot()) {
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return GetDirectoryRelative(path);
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}
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return GetParentDirectory()->GetDirectoryAbsolute(path);
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}
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VirtualFile VfsDirectory::GetFile(std::string_view name) const {
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const auto& files = GetFiles();
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const auto iter = std::find_if(files.begin(), files.end(),
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[&name](const auto& file1) { return name == file1->GetName(); });
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return iter == files.end() ? nullptr : *iter;
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}
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FileTimeStampRaw VfsDirectory::GetFileTimeStamp([[maybe_unused]] std::string_view path) const {
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return {};
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}
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VirtualDir VfsDirectory::GetSubdirectory(std::string_view name) const {
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const auto& subs = GetSubdirectories();
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const auto iter = std::find_if(subs.begin(), subs.end(),
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[&name](const auto& file1) { return name == file1->GetName(); });
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return iter == subs.end() ? nullptr : *iter;
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}
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bool VfsDirectory::IsRoot() const {
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return GetParentDirectory() == nullptr;
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}
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std::size_t VfsDirectory::GetSize() const {
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const auto& files = GetFiles();
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const auto sum_sizes = [](const auto& range) {
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return std::accumulate(range.begin(), range.end(), 0ULL,
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[](const auto& f1, const auto& f2) { return f1 + f2->GetSize(); });
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};
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const auto file_total = sum_sizes(files);
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const auto& sub_dir = GetSubdirectories();
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const auto subdir_total = sum_sizes(sub_dir);
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return file_total + subdir_total;
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}
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VirtualFile VfsDirectory::CreateFileRelative(std::string_view path) {
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auto vec = Common::FS::SplitPathComponents(path);
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if (vec.empty()) {
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return nullptr;
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}
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if (vec.size() == 1) {
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return CreateFile(vec[0]);
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}
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auto dir = GetSubdirectory(vec[0]);
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if (dir == nullptr) {
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dir = CreateSubdirectory(vec[0]);
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if (dir == nullptr) {
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return nullptr;
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}
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}
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return dir->CreateFileRelative(Common::FS::GetPathWithoutTop(path));
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}
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VirtualFile VfsDirectory::CreateFileAbsolute(std::string_view path) {
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if (IsRoot()) {
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return CreateFileRelative(path);
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}
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return GetParentDirectory()->CreateFileAbsolute(path);
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}
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VirtualDir VfsDirectory::CreateDirectoryRelative(std::string_view path) {
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auto vec = Common::FS::SplitPathComponents(path);
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if (vec.empty()) {
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return nullptr;
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}
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if (vec.size() == 1) {
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return CreateSubdirectory(vec[0]);
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}
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auto dir = GetSubdirectory(vec[0]);
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if (dir == nullptr) {
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dir = CreateSubdirectory(vec[0]);
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if (dir == nullptr) {
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return nullptr;
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}
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}
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return dir->CreateDirectoryRelative(Common::FS::GetPathWithoutTop(path));
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}
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VirtualDir VfsDirectory::CreateDirectoryAbsolute(std::string_view path) {
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if (IsRoot()) {
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return CreateDirectoryRelative(path);
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}
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return GetParentDirectory()->CreateDirectoryAbsolute(path);
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}
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bool VfsDirectory::DeleteSubdirectoryRecursive(std::string_view name) {
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auto dir = GetSubdirectory(name);
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if (dir == nullptr) {
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return false;
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}
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bool success = true;
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for (const auto& file : dir->GetFiles()) {
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if (!DeleteFile(file->GetName())) {
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success = false;
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}
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}
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for (const auto& sdir : dir->GetSubdirectories()) {
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if (!dir->DeleteSubdirectoryRecursive(sdir->GetName())) {
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success = false;
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}
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}
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return success;
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}
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bool VfsDirectory::CleanSubdirectoryRecursive(std::string_view name) {
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auto dir = GetSubdirectory(name);
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if (dir == nullptr) {
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return false;
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}
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bool success = true;
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for (const auto& file : dir->GetFiles()) {
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if (!dir->DeleteFile(file->GetName())) {
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success = false;
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}
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}
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for (const auto& sdir : dir->GetSubdirectories()) {
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if (!dir->DeleteSubdirectoryRecursive(sdir->GetName())) {
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success = false;
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}
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}
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return success;
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}
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bool VfsDirectory::Copy(std::string_view src, std::string_view dest) {
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const auto f1 = GetFile(src);
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auto f2 = CreateFile(dest);
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if (f1 == nullptr || f2 == nullptr) {
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return false;
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}
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if (!f2->Resize(f1->GetSize())) {
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DeleteFile(dest);
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return false;
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}
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return f2->WriteBytes(f1->ReadAllBytes()) == f1->GetSize();
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}
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std::map<std::string, VfsEntryType, std::less<>> VfsDirectory::GetEntries() const {
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std::map<std::string, VfsEntryType, std::less<>> out;
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for (const auto& dir : GetSubdirectories())
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out.emplace(dir->GetName(), VfsEntryType::Directory);
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for (const auto& file : GetFiles())
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out.emplace(file->GetName(), VfsEntryType::File);
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return out;
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}
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std::string VfsDirectory::GetFullPath() const {
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if (IsRoot())
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return GetName();
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return GetParentDirectory()->GetFullPath() + '/' + GetName();
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}
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bool ReadOnlyVfsDirectory::IsWritable() const {
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return false;
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}
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bool ReadOnlyVfsDirectory::IsReadable() const {
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return true;
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}
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VirtualDir ReadOnlyVfsDirectory::CreateSubdirectory(std::string_view name) {
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return nullptr;
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}
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VirtualFile ReadOnlyVfsDirectory::CreateFile(std::string_view name) {
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return nullptr;
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}
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VirtualFile ReadOnlyVfsDirectory::CreateFileAbsolute(std::string_view path) {
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return nullptr;
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}
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VirtualFile ReadOnlyVfsDirectory::CreateFileRelative(std::string_view path) {
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return nullptr;
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}
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VirtualDir ReadOnlyVfsDirectory::CreateDirectoryAbsolute(std::string_view path) {
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return nullptr;
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}
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VirtualDir ReadOnlyVfsDirectory::CreateDirectoryRelative(std::string_view path) {
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return nullptr;
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}
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bool ReadOnlyVfsDirectory::DeleteSubdirectory(std::string_view name) {
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return false;
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}
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bool ReadOnlyVfsDirectory::DeleteSubdirectoryRecursive(std::string_view name) {
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return false;
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}
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bool ReadOnlyVfsDirectory::CleanSubdirectoryRecursive(std::string_view name) {
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return false;
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}
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bool ReadOnlyVfsDirectory::DeleteFile(std::string_view name) {
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return false;
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}
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bool ReadOnlyVfsDirectory::Rename(std::string_view name) {
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return false;
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}
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bool DeepEquals(const VirtualFile& file1, const VirtualFile& file2, std::size_t block_size) {
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if (file1->GetSize() != file2->GetSize())
|
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return false;
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||||
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||||
std::vector<u8> f1_v(block_size);
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||||
std::vector<u8> f2_v(block_size);
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for (std::size_t i = 0; i < file1->GetSize(); i += block_size) {
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auto f1_vs = file1->Read(f1_v.data(), block_size, i);
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auto f2_vs = file2->Read(f2_v.data(), block_size, i);
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|
||||
if (f1_vs != f2_vs)
|
||||
return false;
|
||||
auto iters = std::mismatch(f1_v.begin(), f1_v.end(), f2_v.begin(), f2_v.end());
|
||||
if (iters.first != f1_v.end() && iters.second != f2_v.end())
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool VfsRawCopy(const VirtualFile& src, const VirtualFile& dest, std::size_t block_size) {
|
||||
if (src == nullptr || dest == nullptr || !src->IsReadable() || !dest->IsWritable())
|
||||
return false;
|
||||
if (!dest->Resize(src->GetSize()))
|
||||
return false;
|
||||
|
||||
std::vector<u8> temp(std::min(block_size, src->GetSize()));
|
||||
for (std::size_t i = 0; i < src->GetSize(); i += block_size) {
|
||||
const auto read = std::min(block_size, src->GetSize() - i);
|
||||
|
||||
if (src->Read(temp.data(), read, i) != read) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (dest->Write(temp.data(), read, i) != read) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool VfsRawCopyD(const VirtualDir& src, const VirtualDir& dest, std::size_t block_size) {
|
||||
if (src == nullptr || dest == nullptr || !src->IsReadable() || !dest->IsWritable())
|
||||
return false;
|
||||
|
||||
for (const auto& file : src->GetFiles()) {
|
||||
const auto out = dest->CreateFile(file->GetName());
|
||||
if (!VfsRawCopy(file, out, block_size))
|
||||
return false;
|
||||
}
|
||||
|
||||
for (const auto& dir : src->GetSubdirectories()) {
|
||||
const auto out = dest->CreateSubdirectory(dir->GetName());
|
||||
if (!VfsRawCopyD(dir, out, block_size))
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
VirtualDir GetOrCreateDirectoryRelative(const VirtualDir& rel, std::string_view path) {
|
||||
const auto res = rel->GetDirectoryRelative(path);
|
||||
if (res == nullptr)
|
||||
return rel->CreateDirectoryRelative(path);
|
||||
return res;
|
||||
}
|
||||
} // namespace FileSys
|
||||
327
src/core/file_sys/vfs/vfs.h
Normal file
327
src/core/file_sys/vfs/vfs.h
Normal file
@ -0,0 +1,327 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <functional>
|
||||
#include <map>
|
||||
#include <memory>
|
||||
#include <optional>
|
||||
#include <string>
|
||||
#include <type_traits>
|
||||
#include <vector>
|
||||
|
||||
#include "common/common_funcs.h"
|
||||
#include "common/common_types.h"
|
||||
#include "core/file_sys/vfs/vfs_types.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
enum class Mode : u32;
|
||||
|
||||
// An enumeration representing what can be at the end of a path in a VfsFilesystem
|
||||
enum class VfsEntryType {
|
||||
None,
|
||||
File,
|
||||
Directory,
|
||||
};
|
||||
|
||||
// A class representing an abstract filesystem. A default implementation given the root VirtualDir
|
||||
// is provided for convenience, but if the Vfs implementation has any additional state or
|
||||
// functionality, they will need to override.
|
||||
class VfsFilesystem {
|
||||
public:
|
||||
YUZU_NON_COPYABLE(VfsFilesystem);
|
||||
YUZU_NON_MOVEABLE(VfsFilesystem);
|
||||
|
||||
explicit VfsFilesystem(VirtualDir root);
|
||||
virtual ~VfsFilesystem();
|
||||
|
||||
// Gets the friendly name for the filesystem.
|
||||
virtual std::string GetName() const;
|
||||
|
||||
// Return whether or not the user has read permissions on this filesystem.
|
||||
virtual bool IsReadable() const;
|
||||
// Return whether or not the user has write permission on this filesystem.
|
||||
virtual bool IsWritable() const;
|
||||
|
||||
// Determine if the entry at path is non-existent, a file, or a directory.
|
||||
virtual VfsEntryType GetEntryType(std::string_view path) const;
|
||||
|
||||
// Opens the file with path relative to root. If it doesn't exist, returns nullptr.
|
||||
virtual VirtualFile OpenFile(std::string_view path, Mode perms);
|
||||
// Creates a new, empty file at path
|
||||
virtual VirtualFile CreateFile(std::string_view path, Mode perms);
|
||||
// Copies the file from old_path to new_path, returning the new file on success and nullptr on
|
||||
// failure.
|
||||
virtual VirtualFile CopyFile(std::string_view old_path, std::string_view new_path);
|
||||
// Moves the file from old_path to new_path, returning the moved file on success and nullptr on
|
||||
// failure.
|
||||
virtual VirtualFile MoveFile(std::string_view old_path, std::string_view new_path);
|
||||
// Deletes the file with path relative to root, returning true on success.
|
||||
virtual bool DeleteFile(std::string_view path);
|
||||
|
||||
// Opens the directory with path relative to root. If it doesn't exist, returns nullptr.
|
||||
virtual VirtualDir OpenDirectory(std::string_view path, Mode perms);
|
||||
// Creates a new, empty directory at path
|
||||
virtual VirtualDir CreateDirectory(std::string_view path, Mode perms);
|
||||
// Copies the directory from old_path to new_path, returning the new directory on success and
|
||||
// nullptr on failure.
|
||||
virtual VirtualDir CopyDirectory(std::string_view old_path, std::string_view new_path);
|
||||
// Moves the directory from old_path to new_path, returning the moved directory on success and
|
||||
// nullptr on failure.
|
||||
virtual VirtualDir MoveDirectory(std::string_view old_path, std::string_view new_path);
|
||||
// Deletes the directory with path relative to root, returning true on success.
|
||||
virtual bool DeleteDirectory(std::string_view path);
|
||||
|
||||
protected:
|
||||
// Root directory in default implementation.
|
||||
VirtualDir root;
|
||||
};
|
||||
|
||||
// A class representing a file in an abstract filesystem.
|
||||
class VfsFile {
|
||||
public:
|
||||
YUZU_NON_COPYABLE(VfsFile);
|
||||
YUZU_NON_MOVEABLE(VfsFile);
|
||||
|
||||
VfsFile() = default;
|
||||
virtual ~VfsFile();
|
||||
|
||||
// Retrieves the file name.
|
||||
virtual std::string GetName() const = 0;
|
||||
// Retrieves the extension of the file name.
|
||||
virtual std::string GetExtension() const;
|
||||
// Retrieves the size of the file.
|
||||
virtual std::size_t GetSize() const = 0;
|
||||
// Resizes the file to new_size. Returns whether or not the operation was successful.
|
||||
virtual bool Resize(std::size_t new_size) = 0;
|
||||
// Gets a pointer to the directory containing this file, returning nullptr if there is none.
|
||||
virtual VirtualDir GetContainingDirectory() const = 0;
|
||||
|
||||
// Returns whether or not the file can be written to.
|
||||
virtual bool IsWritable() const = 0;
|
||||
// Returns whether or not the file can be read from.
|
||||
virtual bool IsReadable() const = 0;
|
||||
|
||||
// The primary method of reading from the file. Reads length bytes into data starting at offset
|
||||
// into file. Returns number of bytes successfully read.
|
||||
virtual std::size_t Read(u8* data, std::size_t length, std::size_t offset = 0) const = 0;
|
||||
// The primary method of writing to the file. Writes length bytes from data starting at offset
|
||||
// into file. Returns number of bytes successfully written.
|
||||
virtual std::size_t Write(const u8* data, std::size_t length, std::size_t offset = 0) = 0;
|
||||
|
||||
// Reads exactly one byte at the offset provided, returning std::nullopt on error.
|
||||
virtual std::optional<u8> ReadByte(std::size_t offset = 0) const;
|
||||
// Reads size bytes starting at offset in file into a vector.
|
||||
virtual std::vector<u8> ReadBytes(std::size_t size, std::size_t offset = 0) const;
|
||||
// Reads all the bytes from the file into a vector. Equivalent to 'file->Read(file->GetSize(),
|
||||
// 0)'
|
||||
virtual std::vector<u8> ReadAllBytes() const;
|
||||
|
||||
// Reads an array of type T, size number_elements starting at offset.
|
||||
// Returns the number of bytes (sizeof(T)*number_elements) read successfully.
|
||||
template <typename T>
|
||||
std::size_t ReadArray(T* data, std::size_t number_elements, std::size_t offset = 0) const {
|
||||
static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
|
||||
|
||||
return Read(reinterpret_cast<u8*>(data), number_elements * sizeof(T), offset);
|
||||
}
|
||||
|
||||
// Reads size bytes into the memory starting at data starting at offset into the file.
|
||||
// Returns the number of bytes read successfully.
|
||||
template <typename T>
|
||||
std::size_t ReadBytes(T* data, std::size_t size, std::size_t offset = 0) const {
|
||||
static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
|
||||
return Read(reinterpret_cast<u8*>(data), size, offset);
|
||||
}
|
||||
|
||||
// Reads one object of type T starting at offset in file.
|
||||
// Returns the number of bytes read successfully (sizeof(T)).
|
||||
template <typename T>
|
||||
std::size_t ReadObject(T* data, std::size_t offset = 0) const {
|
||||
static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
|
||||
return Read(reinterpret_cast<u8*>(data), sizeof(T), offset);
|
||||
}
|
||||
|
||||
// Writes exactly one byte to offset in file and returns whether or not the byte was written
|
||||
// successfully.
|
||||
virtual bool WriteByte(u8 data, std::size_t offset = 0);
|
||||
// Writes a vector of bytes to offset in file and returns the number of bytes successfully
|
||||
// written.
|
||||
virtual std::size_t WriteBytes(const std::vector<u8>& data, std::size_t offset = 0);
|
||||
|
||||
// Writes an array of type T, size number_elements to offset in file.
|
||||
// Returns the number of bytes (sizeof(T)*number_elements) written successfully.
|
||||
template <typename T>
|
||||
std::size_t WriteArray(const T* data, std::size_t number_elements, std::size_t offset = 0) {
|
||||
static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
|
||||
return Write(reinterpret_cast<const u8*>(data), number_elements * sizeof(T), offset);
|
||||
}
|
||||
|
||||
// Writes size bytes starting at memory location data to offset in file.
|
||||
// Returns the number of bytes written successfully.
|
||||
template <typename T>
|
||||
std::size_t WriteBytes(const T* data, std::size_t size, std::size_t offset = 0) {
|
||||
static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
|
||||
return Write(reinterpret_cast<const u8*>(data), size, offset);
|
||||
}
|
||||
|
||||
// Writes one object of type T to offset in file.
|
||||
// Returns the number of bytes written successfully (sizeof(T)).
|
||||
template <typename T>
|
||||
std::size_t WriteObject(const T& data, std::size_t offset = 0) {
|
||||
static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
|
||||
return Write(reinterpret_cast<const u8*>(&data), sizeof(T), offset);
|
||||
}
|
||||
|
||||
// Renames the file to name. Returns whether or not the operation was successful.
|
||||
virtual bool Rename(std::string_view name) = 0;
|
||||
|
||||
// Returns the full path of this file as a string, recursively
|
||||
virtual std::string GetFullPath() const;
|
||||
};
|
||||
|
||||
// A class representing a directory in an abstract filesystem.
|
||||
class VfsDirectory {
|
||||
public:
|
||||
YUZU_NON_COPYABLE(VfsDirectory);
|
||||
YUZU_NON_MOVEABLE(VfsDirectory);
|
||||
|
||||
VfsDirectory() = default;
|
||||
virtual ~VfsDirectory();
|
||||
|
||||
// Retrieves the file located at path as if the current directory was root. Returns nullptr if
|
||||
// not found.
|
||||
virtual VirtualFile GetFileRelative(std::string_view path) const;
|
||||
// Calls GetFileRelative(path) on the root of the current directory.
|
||||
virtual VirtualFile GetFileAbsolute(std::string_view path) const;
|
||||
|
||||
// Retrieves the directory located at path as if the current directory was root. Returns nullptr
|
||||
// if not found.
|
||||
virtual VirtualDir GetDirectoryRelative(std::string_view path) const;
|
||||
// Calls GetDirectoryRelative(path) on the root of the current directory.
|
||||
virtual VirtualDir GetDirectoryAbsolute(std::string_view path) const;
|
||||
|
||||
// Returns a vector containing all of the files in this directory.
|
||||
virtual std::vector<VirtualFile> GetFiles() const = 0;
|
||||
// Returns the file with filename matching name. Returns nullptr if directory doesn't have a
|
||||
// file with name.
|
||||
virtual VirtualFile GetFile(std::string_view name) const;
|
||||
|
||||
// Returns a struct containing the file's timestamp.
|
||||
virtual FileTimeStampRaw GetFileTimeStamp(std::string_view path) const;
|
||||
|
||||
// Returns a vector containing all of the subdirectories in this directory.
|
||||
virtual std::vector<VirtualDir> GetSubdirectories() const = 0;
|
||||
// Returns the directory with name matching name. Returns nullptr if directory doesn't have a
|
||||
// directory with name.
|
||||
virtual VirtualDir GetSubdirectory(std::string_view name) const;
|
||||
|
||||
// Returns whether or not the directory can be written to.
|
||||
virtual bool IsWritable() const = 0;
|
||||
// Returns whether of not the directory can be read from.
|
||||
virtual bool IsReadable() const = 0;
|
||||
|
||||
// Returns whether or not the directory is the root of the current file tree.
|
||||
virtual bool IsRoot() const;
|
||||
|
||||
// Returns the name of the directory.
|
||||
virtual std::string GetName() const = 0;
|
||||
// Returns the total size of all files and subdirectories in this directory.
|
||||
virtual std::size_t GetSize() const;
|
||||
// Returns the parent directory of this directory. Returns nullptr if this directory is root or
|
||||
// has no parent.
|
||||
virtual VirtualDir GetParentDirectory() const = 0;
|
||||
|
||||
// Creates a new subdirectory with name name. Returns a pointer to the new directory or nullptr
|
||||
// if the operation failed.
|
||||
virtual VirtualDir CreateSubdirectory(std::string_view name) = 0;
|
||||
// Creates a new file with name name. Returns a pointer to the new file or nullptr if the
|
||||
// operation failed.
|
||||
virtual VirtualFile CreateFile(std::string_view name) = 0;
|
||||
|
||||
// Creates a new file at the path relative to this directory. Also creates directories if
|
||||
// they do not exist and is supported by this implementation. Returns nullptr on any failure.
|
||||
virtual VirtualFile CreateFileRelative(std::string_view path);
|
||||
|
||||
// Creates a new file at the path relative to root of this directory. Also creates directories
|
||||
// if they do not exist and is supported by this implementation. Returns nullptr on any failure.
|
||||
virtual VirtualFile CreateFileAbsolute(std::string_view path);
|
||||
|
||||
// Creates a new directory at the path relative to this directory. Also creates directories if
|
||||
// they do not exist and is supported by this implementation. Returns nullptr on any failure.
|
||||
virtual VirtualDir CreateDirectoryRelative(std::string_view path);
|
||||
|
||||
// Creates a new directory at the path relative to root of this directory. Also creates
|
||||
// directories if they do not exist and is supported by this implementation. Returns nullptr on
|
||||
// any failure.
|
||||
virtual VirtualDir CreateDirectoryAbsolute(std::string_view path);
|
||||
|
||||
// Deletes the subdirectory with the given name and returns true on success.
|
||||
virtual bool DeleteSubdirectory(std::string_view name) = 0;
|
||||
|
||||
// Deletes all subdirectories and files within the provided directory and then deletes
|
||||
// the directory itself. Returns true on success.
|
||||
virtual bool DeleteSubdirectoryRecursive(std::string_view name);
|
||||
|
||||
// Deletes all subdirectories and files within the provided directory.
|
||||
// Unlike DeleteSubdirectoryRecursive, this does not delete the provided directory.
|
||||
virtual bool CleanSubdirectoryRecursive(std::string_view name);
|
||||
|
||||
// Returns whether or not the file with name name was deleted successfully.
|
||||
virtual bool DeleteFile(std::string_view name) = 0;
|
||||
|
||||
// Returns whether or not this directory was renamed to name.
|
||||
virtual bool Rename(std::string_view name) = 0;
|
||||
|
||||
// Returns whether or not the file with name src was successfully copied to a new file with name
|
||||
// dest.
|
||||
virtual bool Copy(std::string_view src, std::string_view dest);
|
||||
|
||||
// Gets all of the entries directly in the directory (files and dirs), returning a map between
|
||||
// item name -> type.
|
||||
virtual std::map<std::string, VfsEntryType, std::less<>> GetEntries() const;
|
||||
|
||||
// Returns the full path of this directory as a string, recursively
|
||||
virtual std::string GetFullPath() const;
|
||||
};
|
||||
|
||||
// A convenience partial-implementation of VfsDirectory that stubs out methods that should only work
|
||||
// if writable. This is to avoid redundant empty methods everywhere.
|
||||
class ReadOnlyVfsDirectory : public VfsDirectory {
|
||||
public:
|
||||
bool IsWritable() const override;
|
||||
bool IsReadable() const override;
|
||||
VirtualDir CreateSubdirectory(std::string_view name) override;
|
||||
VirtualFile CreateFile(std::string_view name) override;
|
||||
VirtualFile CreateFileAbsolute(std::string_view path) override;
|
||||
VirtualFile CreateFileRelative(std::string_view path) override;
|
||||
VirtualDir CreateDirectoryAbsolute(std::string_view path) override;
|
||||
VirtualDir CreateDirectoryRelative(std::string_view path) override;
|
||||
bool DeleteSubdirectory(std::string_view name) override;
|
||||
bool DeleteSubdirectoryRecursive(std::string_view name) override;
|
||||
bool CleanSubdirectoryRecursive(std::string_view name) override;
|
||||
bool DeleteFile(std::string_view name) override;
|
||||
bool Rename(std::string_view name) override;
|
||||
};
|
||||
|
||||
// Compare the two files, byte-for-byte, in increments specified by block_size
|
||||
bool DeepEquals(const VirtualFile& file1, const VirtualFile& file2,
|
||||
std::size_t block_size = 0x1000);
|
||||
|
||||
// A method that copies the raw data between two different implementations of VirtualFile. If you
|
||||
// are using the same implementation, it is probably better to use the Copy method in the parent
|
||||
// directory of src/dest.
|
||||
bool VfsRawCopy(const VirtualFile& src, const VirtualFile& dest, std::size_t block_size = 0x1000);
|
||||
|
||||
// A method that performs a similar function to VfsRawCopy above, but instead copies entire
|
||||
// directories. It suffers the same performance penalties as above and an implementation-specific
|
||||
// Copy should always be preferred.
|
||||
bool VfsRawCopyD(const VirtualDir& src, const VirtualDir& dest, std::size_t block_size = 0x1000);
|
||||
|
||||
// Checks if the directory at path relative to rel exists. If it does, returns that. If it does not
|
||||
// it attempts to create it and returns the new dir or nullptr on failure.
|
||||
VirtualDir GetOrCreateDirectoryRelative(const VirtualDir& rel, std::string_view path);
|
||||
|
||||
} // namespace FileSys
|
||||
63
src/core/file_sys/vfs/vfs_cached.cpp
Normal file
63
src/core/file_sys/vfs/vfs_cached.cpp
Normal file
@ -0,0 +1,63 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#include "core/file_sys/vfs/vfs_cached.h"
|
||||
#include "core/file_sys/vfs/vfs_types.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
CachedVfsDirectory::CachedVfsDirectory(VirtualDir&& source_dir)
|
||||
: name(source_dir->GetName()), parent(source_dir->GetParentDirectory()) {
|
||||
for (auto& dir : source_dir->GetSubdirectories()) {
|
||||
dirs.emplace(dir->GetName(), std::make_shared<CachedVfsDirectory>(std::move(dir)));
|
||||
}
|
||||
for (auto& file : source_dir->GetFiles()) {
|
||||
files.emplace(file->GetName(), std::move(file));
|
||||
}
|
||||
}
|
||||
|
||||
CachedVfsDirectory::~CachedVfsDirectory() = default;
|
||||
|
||||
VirtualFile CachedVfsDirectory::GetFile(std::string_view file_name) const {
|
||||
auto it = files.find(file_name);
|
||||
if (it != files.end()) {
|
||||
return it->second;
|
||||
}
|
||||
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
VirtualDir CachedVfsDirectory::GetSubdirectory(std::string_view dir_name) const {
|
||||
auto it = dirs.find(dir_name);
|
||||
if (it != dirs.end()) {
|
||||
return it->second;
|
||||
}
|
||||
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
std::vector<VirtualFile> CachedVfsDirectory::GetFiles() const {
|
||||
std::vector<VirtualFile> out;
|
||||
for (auto& [file_name, file] : files) {
|
||||
out.push_back(file);
|
||||
}
|
||||
return out;
|
||||
}
|
||||
|
||||
std::vector<VirtualDir> CachedVfsDirectory::GetSubdirectories() const {
|
||||
std::vector<VirtualDir> out;
|
||||
for (auto& [dir_name, dir] : dirs) {
|
||||
out.push_back(dir);
|
||||
}
|
||||
return out;
|
||||
}
|
||||
|
||||
std::string CachedVfsDirectory::GetName() const {
|
||||
return name;
|
||||
}
|
||||
|
||||
VirtualDir CachedVfsDirectory::GetParentDirectory() const {
|
||||
return parent;
|
||||
}
|
||||
|
||||
} // namespace FileSys
|
||||
31
src/core/file_sys/vfs/vfs_cached.h
Normal file
31
src/core/file_sys/vfs/vfs_cached.h
Normal file
@ -0,0 +1,31 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <string_view>
|
||||
#include <vector>
|
||||
#include "core/file_sys/vfs/vfs.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
class CachedVfsDirectory : public ReadOnlyVfsDirectory {
|
||||
public:
|
||||
CachedVfsDirectory(VirtualDir&& source_directory);
|
||||
|
||||
~CachedVfsDirectory() override;
|
||||
VirtualFile GetFile(std::string_view file_name) const override;
|
||||
VirtualDir GetSubdirectory(std::string_view dir_name) const override;
|
||||
std::vector<VirtualFile> GetFiles() const override;
|
||||
std::vector<VirtualDir> GetSubdirectories() const override;
|
||||
std::string GetName() const override;
|
||||
VirtualDir GetParentDirectory() const override;
|
||||
|
||||
private:
|
||||
std::string name;
|
||||
VirtualDir parent;
|
||||
std::map<std::string, VirtualDir, std::less<>> dirs;
|
||||
std::map<std::string, VirtualFile, std::less<>> files;
|
||||
};
|
||||
|
||||
} // namespace FileSys
|
||||
192
src/core/file_sys/vfs/vfs_concat.cpp
Normal file
192
src/core/file_sys/vfs/vfs_concat.cpp
Normal file
@ -0,0 +1,192 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#include <algorithm>
|
||||
#include <utility>
|
||||
|
||||
#include "common/assert.h"
|
||||
#include "core/file_sys/vfs/vfs_concat.h"
|
||||
#include "core/file_sys/vfs/vfs_static.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
ConcatenatedVfsFile::ConcatenatedVfsFile(std::string&& name_, ConcatenationMap&& concatenation_map_)
|
||||
: concatenation_map(std::move(concatenation_map_)), name(std::move(name_)) {
|
||||
DEBUG_ASSERT(this->VerifyContinuity());
|
||||
}
|
||||
|
||||
bool ConcatenatedVfsFile::VerifyContinuity() const {
|
||||
u64 last_offset = 0;
|
||||
for (auto& entry : concatenation_map) {
|
||||
if (entry.offset != last_offset) {
|
||||
return false;
|
||||
}
|
||||
|
||||
last_offset = entry.offset + entry.file->GetSize();
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
ConcatenatedVfsFile::~ConcatenatedVfsFile() = default;
|
||||
|
||||
VirtualFile ConcatenatedVfsFile::MakeConcatenatedFile(std::string&& name,
|
||||
std::vector<VirtualFile>&& files) {
|
||||
// Fold trivial cases.
|
||||
if (files.empty()) {
|
||||
return nullptr;
|
||||
}
|
||||
if (files.size() == 1) {
|
||||
return files.front();
|
||||
}
|
||||
|
||||
// Make the concatenation map from the input.
|
||||
std::vector<ConcatenationEntry> concatenation_map;
|
||||
concatenation_map.reserve(files.size());
|
||||
u64 last_offset = 0;
|
||||
|
||||
for (auto& file : files) {
|
||||
const auto size = file->GetSize();
|
||||
|
||||
concatenation_map.emplace_back(ConcatenationEntry{
|
||||
.offset = last_offset,
|
||||
.file = std::move(file),
|
||||
});
|
||||
|
||||
last_offset += size;
|
||||
}
|
||||
|
||||
return VirtualFile(new ConcatenatedVfsFile(std::move(name), std::move(concatenation_map)));
|
||||
}
|
||||
|
||||
VirtualFile ConcatenatedVfsFile::MakeConcatenatedFile(
|
||||
u8 filler_byte, std::string&& name, std::vector<std::pair<u64, VirtualFile>>&& files) {
|
||||
// Fold trivial cases.
|
||||
if (files.empty()) {
|
||||
return nullptr;
|
||||
}
|
||||
if (files.size() == 1) {
|
||||
return files.begin()->second;
|
||||
}
|
||||
|
||||
// Make the concatenation map from the input.
|
||||
std::vector<ConcatenationEntry> concatenation_map;
|
||||
|
||||
concatenation_map.reserve(files.size());
|
||||
u64 last_offset = 0;
|
||||
|
||||
// Iteration of a multimap is ordered, so offset will be strictly non-decreasing.
|
||||
for (auto& [offset, file] : files) {
|
||||
const auto size = file->GetSize();
|
||||
|
||||
if (offset > last_offset) {
|
||||
concatenation_map.emplace_back(ConcatenationEntry{
|
||||
.offset = last_offset,
|
||||
.file = std::make_shared<StaticVfsFile>(filler_byte, offset - last_offset),
|
||||
});
|
||||
}
|
||||
|
||||
concatenation_map.emplace_back(ConcatenationEntry{
|
||||
.offset = offset,
|
||||
.file = std::move(file),
|
||||
});
|
||||
|
||||
last_offset = offset + size;
|
||||
}
|
||||
|
||||
return VirtualFile(new ConcatenatedVfsFile(std::move(name), std::move(concatenation_map)));
|
||||
}
|
||||
|
||||
std::string ConcatenatedVfsFile::GetName() const {
|
||||
if (concatenation_map.empty()) {
|
||||
return "";
|
||||
}
|
||||
if (!name.empty()) {
|
||||
return name;
|
||||
}
|
||||
return concatenation_map.front().file->GetName();
|
||||
}
|
||||
|
||||
std::size_t ConcatenatedVfsFile::GetSize() const {
|
||||
if (concatenation_map.empty()) {
|
||||
return 0;
|
||||
}
|
||||
return concatenation_map.back().offset + concatenation_map.back().file->GetSize();
|
||||
}
|
||||
|
||||
bool ConcatenatedVfsFile::Resize(std::size_t new_size) {
|
||||
return false;
|
||||
}
|
||||
|
||||
VirtualDir ConcatenatedVfsFile::GetContainingDirectory() const {
|
||||
if (concatenation_map.empty()) {
|
||||
return nullptr;
|
||||
}
|
||||
return concatenation_map.front().file->GetContainingDirectory();
|
||||
}
|
||||
|
||||
bool ConcatenatedVfsFile::IsWritable() const {
|
||||
return false;
|
||||
}
|
||||
|
||||
bool ConcatenatedVfsFile::IsReadable() const {
|
||||
return true;
|
||||
}
|
||||
|
||||
std::size_t ConcatenatedVfsFile::Read(u8* data, std::size_t length, std::size_t offset) const {
|
||||
const ConcatenationEntry key{
|
||||
.offset = offset,
|
||||
.file = nullptr,
|
||||
};
|
||||
|
||||
// Read nothing if the map is empty.
|
||||
if (concatenation_map.empty()) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Binary search to find the iterator to the first position we can check.
|
||||
// It must exist, since we are not empty and are comparing unsigned integers.
|
||||
auto it = std::prev(std::upper_bound(concatenation_map.begin(), concatenation_map.end(), key));
|
||||
u64 cur_length = length;
|
||||
u64 cur_offset = offset;
|
||||
|
||||
while (cur_length > 0 && it != concatenation_map.end()) {
|
||||
// Check if we can read the file at this position.
|
||||
const auto& file = it->file;
|
||||
const u64 map_offset = it->offset;
|
||||
const u64 file_size = file->GetSize();
|
||||
|
||||
if (cur_offset > map_offset + file_size) {
|
||||
// Entirely out of bounds read.
|
||||
break;
|
||||
}
|
||||
|
||||
// Read the file at this position.
|
||||
const u64 file_seek = cur_offset - map_offset;
|
||||
const u64 intended_read_size = std::min<u64>(cur_length, file_size - file_seek);
|
||||
const u64 actual_read_size =
|
||||
file->Read(data + (cur_offset - offset), intended_read_size, file_seek);
|
||||
|
||||
// Update tracking.
|
||||
cur_offset += actual_read_size;
|
||||
cur_length -= actual_read_size;
|
||||
it++;
|
||||
|
||||
// If we encountered a short read, we're done.
|
||||
if (actual_read_size < intended_read_size) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return cur_offset - offset;
|
||||
}
|
||||
|
||||
std::size_t ConcatenatedVfsFile::Write(const u8* data, std::size_t length, std::size_t offset) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
bool ConcatenatedVfsFile::Rename(std::string_view new_name) {
|
||||
return false;
|
||||
}
|
||||
|
||||
} // namespace FileSys
|
||||
57
src/core/file_sys/vfs/vfs_concat.h
Normal file
57
src/core/file_sys/vfs/vfs_concat.h
Normal file
@ -0,0 +1,57 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <compare>
|
||||
#include <map>
|
||||
#include <memory>
|
||||
#include "core/file_sys/vfs/vfs.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
// Class that wraps multiple vfs files and concatenates them, making reads seamless. Currently
|
||||
// read-only.
|
||||
class ConcatenatedVfsFile : public VfsFile {
|
||||
private:
|
||||
struct ConcatenationEntry {
|
||||
u64 offset;
|
||||
VirtualFile file;
|
||||
|
||||
auto operator<=>(const ConcatenationEntry& other) const {
|
||||
return this->offset <=> other.offset;
|
||||
}
|
||||
};
|
||||
using ConcatenationMap = std::vector<ConcatenationEntry>;
|
||||
|
||||
explicit ConcatenatedVfsFile(std::string&& name,
|
||||
std::vector<ConcatenationEntry>&& concatenation_map);
|
||||
bool VerifyContinuity() const;
|
||||
|
||||
public:
|
||||
~ConcatenatedVfsFile() override;
|
||||
|
||||
/// Wrapper function to allow for more efficient handling of files.size() == 0, 1 cases.
|
||||
static VirtualFile MakeConcatenatedFile(std::string&& name, std::vector<VirtualFile>&& files);
|
||||
|
||||
/// 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::string&& name,
|
||||
std::vector<std::pair<u64, VirtualFile>>&& files);
|
||||
|
||||
std::string GetName() const override;
|
||||
std::size_t GetSize() const override;
|
||||
bool Resize(std::size_t new_size) override;
|
||||
VirtualDir GetContainingDirectory() const override;
|
||||
bool IsWritable() const override;
|
||||
bool IsReadable() const override;
|
||||
std::size_t Read(u8* data, std::size_t length, std::size_t offset) const override;
|
||||
std::size_t Write(const u8* data, std::size_t length, std::size_t offset) override;
|
||||
bool Rename(std::string_view new_name) override;
|
||||
|
||||
private:
|
||||
ConcatenationMap concatenation_map;
|
||||
std::string name;
|
||||
};
|
||||
|
||||
} // namespace FileSys
|
||||
132
src/core/file_sys/vfs/vfs_layered.cpp
Normal file
132
src/core/file_sys/vfs/vfs_layered.cpp
Normal file
@ -0,0 +1,132 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#include <algorithm>
|
||||
#include <set>
|
||||
#include <unordered_set>
|
||||
#include <utility>
|
||||
#include "core/file_sys/vfs/vfs_layered.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
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)
|
||||
return dirs[0];
|
||||
|
||||
return VirtualDir(new LayeredVfsDirectory(std::move(dirs), std::move(name)));
|
||||
}
|
||||
|
||||
VirtualFile LayeredVfsDirectory::GetFileRelative(std::string_view path) const {
|
||||
for (const auto& layer : dirs) {
|
||||
const auto file = layer->GetFileRelative(path);
|
||||
if (file != nullptr)
|
||||
return file;
|
||||
}
|
||||
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
VirtualDir LayeredVfsDirectory::GetDirectoryRelative(std::string_view path) const {
|
||||
std::vector<VirtualDir> out;
|
||||
for (const auto& layer : dirs) {
|
||||
auto dir = layer->GetDirectoryRelative(path);
|
||||
if (dir != nullptr) {
|
||||
out.emplace_back(std::move(dir));
|
||||
}
|
||||
}
|
||||
|
||||
return MakeLayeredDirectory(std::move(out));
|
||||
}
|
||||
|
||||
VirtualFile LayeredVfsDirectory::GetFile(std::string_view file_name) const {
|
||||
return GetFileRelative(file_name);
|
||||
}
|
||||
|
||||
VirtualDir LayeredVfsDirectory::GetSubdirectory(std::string_view subdir_name) const {
|
||||
return GetDirectoryRelative(subdir_name);
|
||||
}
|
||||
|
||||
std::string LayeredVfsDirectory::GetFullPath() const {
|
||||
return dirs[0]->GetFullPath();
|
||||
}
|
||||
|
||||
std::vector<VirtualFile> LayeredVfsDirectory::GetFiles() const {
|
||||
std::vector<VirtualFile> out;
|
||||
std::unordered_set<std::string> out_names;
|
||||
|
||||
for (const auto& layer : dirs) {
|
||||
for (auto& file : layer->GetFiles()) {
|
||||
const auto [it, is_new] = out_names.emplace(file->GetName());
|
||||
if (is_new) {
|
||||
out.emplace_back(std::move(file));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return out;
|
||||
}
|
||||
|
||||
std::vector<VirtualDir> LayeredVfsDirectory::GetSubdirectories() const {
|
||||
std::vector<VirtualDir> out;
|
||||
std::unordered_set<std::string> out_names;
|
||||
|
||||
for (const auto& layer : dirs) {
|
||||
for (const auto& sd : layer->GetSubdirectories()) {
|
||||
out_names.emplace(sd->GetName());
|
||||
}
|
||||
}
|
||||
|
||||
out.reserve(out_names.size());
|
||||
for (const auto& subdir : out_names) {
|
||||
out.emplace_back(GetSubdirectory(subdir));
|
||||
}
|
||||
|
||||
return out;
|
||||
}
|
||||
|
||||
bool LayeredVfsDirectory::IsWritable() const {
|
||||
return false;
|
||||
}
|
||||
|
||||
bool LayeredVfsDirectory::IsReadable() const {
|
||||
return true;
|
||||
}
|
||||
|
||||
std::string LayeredVfsDirectory::GetName() const {
|
||||
return name.empty() ? dirs[0]->GetName() : name;
|
||||
}
|
||||
|
||||
VirtualDir LayeredVfsDirectory::GetParentDirectory() const {
|
||||
return dirs[0]->GetParentDirectory();
|
||||
}
|
||||
|
||||
VirtualDir LayeredVfsDirectory::CreateSubdirectory(std::string_view subdir_name) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
VirtualFile LayeredVfsDirectory::CreateFile(std::string_view file_name) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
bool LayeredVfsDirectory::DeleteSubdirectory(std::string_view subdir_name) {
|
||||
return false;
|
||||
}
|
||||
|
||||
bool LayeredVfsDirectory::DeleteFile(std::string_view file_name) {
|
||||
return false;
|
||||
}
|
||||
|
||||
bool LayeredVfsDirectory::Rename(std::string_view new_name) {
|
||||
name = new_name;
|
||||
return true;
|
||||
}
|
||||
|
||||
} // namespace FileSys
|
||||
46
src/core/file_sys/vfs/vfs_layered.h
Normal file
46
src/core/file_sys/vfs/vfs_layered.h
Normal file
@ -0,0 +1,46 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <memory>
|
||||
#include "core/file_sys/vfs/vfs.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
// 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 {
|
||||
explicit 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 = "");
|
||||
|
||||
VirtualFile GetFileRelative(std::string_view path) const override;
|
||||
VirtualDir GetDirectoryRelative(std::string_view path) const override;
|
||||
VirtualFile GetFile(std::string_view file_name) const override;
|
||||
VirtualDir GetSubdirectory(std::string_view subdir_name) const override;
|
||||
std::string GetFullPath() const override;
|
||||
|
||||
std::vector<VirtualFile> GetFiles() const override;
|
||||
std::vector<VirtualDir> GetSubdirectories() const override;
|
||||
bool IsWritable() const override;
|
||||
bool IsReadable() const override;
|
||||
std::string GetName() const override;
|
||||
VirtualDir GetParentDirectory() const override;
|
||||
VirtualDir CreateSubdirectory(std::string_view subdir_name) override;
|
||||
VirtualFile CreateFile(std::string_view file_name) override;
|
||||
bool DeleteSubdirectory(std::string_view subdir_name) override;
|
||||
bool DeleteFile(std::string_view file_name) override;
|
||||
bool Rename(std::string_view new_name) override;
|
||||
|
||||
private:
|
||||
std::vector<VirtualDir> dirs;
|
||||
std::string name;
|
||||
};
|
||||
|
||||
} // namespace FileSys
|
||||
98
src/core/file_sys/vfs/vfs_offset.cpp
Normal file
98
src/core/file_sys/vfs/vfs_offset.cpp
Normal file
@ -0,0 +1,98 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#include <algorithm>
|
||||
#include <utility>
|
||||
|
||||
#include "core/file_sys/vfs/vfs_offset.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
OffsetVfsFile::OffsetVfsFile(VirtualFile file_, std::size_t size_, std::size_t offset_,
|
||||
std::string name_, VirtualDir parent_)
|
||||
: file(file_), offset(offset_), size(size_), name(std::move(name_)),
|
||||
parent(parent_ == nullptr ? file->GetContainingDirectory() : std::move(parent_)) {}
|
||||
|
||||
OffsetVfsFile::~OffsetVfsFile() = default;
|
||||
|
||||
std::string OffsetVfsFile::GetName() const {
|
||||
return name.empty() ? file->GetName() : name;
|
||||
}
|
||||
|
||||
std::size_t OffsetVfsFile::GetSize() const {
|
||||
return size;
|
||||
}
|
||||
|
||||
bool OffsetVfsFile::Resize(std::size_t new_size) {
|
||||
if (offset + new_size < file->GetSize()) {
|
||||
size = new_size;
|
||||
} else {
|
||||
auto res = file->Resize(offset + new_size);
|
||||
if (!res)
|
||||
return false;
|
||||
size = new_size;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
VirtualDir OffsetVfsFile::GetContainingDirectory() const {
|
||||
return parent;
|
||||
}
|
||||
|
||||
bool OffsetVfsFile::IsWritable() const {
|
||||
return file->IsWritable();
|
||||
}
|
||||
|
||||
bool OffsetVfsFile::IsReadable() const {
|
||||
return file->IsReadable();
|
||||
}
|
||||
|
||||
std::size_t OffsetVfsFile::Read(u8* data, std::size_t length, std::size_t r_offset) const {
|
||||
return file->Read(data, TrimToFit(length, r_offset), offset + r_offset);
|
||||
}
|
||||
|
||||
std::size_t OffsetVfsFile::Write(const u8* data, std::size_t length, std::size_t r_offset) {
|
||||
return file->Write(data, TrimToFit(length, r_offset), offset + r_offset);
|
||||
}
|
||||
|
||||
std::optional<u8> OffsetVfsFile::ReadByte(std::size_t r_offset) const {
|
||||
if (r_offset >= size) {
|
||||
return std::nullopt;
|
||||
}
|
||||
|
||||
return file->ReadByte(offset + r_offset);
|
||||
}
|
||||
|
||||
std::vector<u8> OffsetVfsFile::ReadBytes(std::size_t r_size, std::size_t r_offset) const {
|
||||
return file->ReadBytes(TrimToFit(r_size, r_offset), offset + r_offset);
|
||||
}
|
||||
|
||||
std::vector<u8> OffsetVfsFile::ReadAllBytes() const {
|
||||
return file->ReadBytes(size, offset);
|
||||
}
|
||||
|
||||
bool OffsetVfsFile::WriteByte(u8 data, std::size_t r_offset) {
|
||||
if (r_offset < size)
|
||||
return file->WriteByte(data, offset + r_offset);
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
std::size_t OffsetVfsFile::WriteBytes(const std::vector<u8>& data, std::size_t r_offset) {
|
||||
return file->Write(data.data(), TrimToFit(data.size(), r_offset), offset + r_offset);
|
||||
}
|
||||
|
||||
bool OffsetVfsFile::Rename(std::string_view new_name) {
|
||||
return file->Rename(new_name);
|
||||
}
|
||||
|
||||
std::size_t OffsetVfsFile::GetOffset() const {
|
||||
return offset;
|
||||
}
|
||||
|
||||
std::size_t OffsetVfsFile::TrimToFit(std::size_t r_size, std::size_t r_offset) const {
|
||||
return std::clamp(r_size, std::size_t{0}, size - r_offset);
|
||||
}
|
||||
|
||||
} // namespace FileSys
|
||||
50
src/core/file_sys/vfs/vfs_offset.h
Normal file
50
src/core/file_sys/vfs/vfs_offset.h
Normal file
@ -0,0 +1,50 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <memory>
|
||||
|
||||
#include "core/file_sys/vfs/vfs.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
// An implementation of VfsFile that wraps around another VfsFile at a certain offset.
|
||||
// Similar to seeking to an offset.
|
||||
// If the file is writable, operations that would write past the end of the offset file will expand
|
||||
// the size of this wrapper.
|
||||
class OffsetVfsFile : public VfsFile {
|
||||
public:
|
||||
OffsetVfsFile(VirtualFile file, std::size_t size, std::size_t offset = 0,
|
||||
std::string new_name = "", VirtualDir new_parent = nullptr);
|
||||
~OffsetVfsFile() override;
|
||||
|
||||
std::string GetName() const override;
|
||||
std::size_t GetSize() const override;
|
||||
bool Resize(std::size_t new_size) override;
|
||||
VirtualDir GetContainingDirectory() const override;
|
||||
bool IsWritable() const override;
|
||||
bool IsReadable() const override;
|
||||
std::size_t Read(u8* data, std::size_t length, std::size_t offset) const override;
|
||||
std::size_t Write(const u8* data, std::size_t length, std::size_t offset) override;
|
||||
std::optional<u8> ReadByte(std::size_t offset) const override;
|
||||
std::vector<u8> ReadBytes(std::size_t size, std::size_t offset) const override;
|
||||
std::vector<u8> ReadAllBytes() const override;
|
||||
bool WriteByte(u8 data, std::size_t offset) override;
|
||||
std::size_t WriteBytes(const std::vector<u8>& data, std::size_t offset) override;
|
||||
|
||||
bool Rename(std::string_view new_name) override;
|
||||
|
||||
std::size_t GetOffset() const;
|
||||
|
||||
private:
|
||||
std::size_t TrimToFit(std::size_t r_size, std::size_t r_offset) const;
|
||||
|
||||
VirtualFile file;
|
||||
std::size_t offset;
|
||||
std::size_t size;
|
||||
std::string name;
|
||||
VirtualDir parent;
|
||||
};
|
||||
|
||||
} // namespace FileSys
|
||||
528
src/core/file_sys/vfs/vfs_real.cpp
Normal file
528
src/core/file_sys/vfs/vfs_real.cpp
Normal file
@ -0,0 +1,528 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#include <algorithm>
|
||||
#include <cstddef>
|
||||
#include <iterator>
|
||||
#include <utility>
|
||||
#include "common/assert.h"
|
||||
#include "common/fs/file.h"
|
||||
#include "common/fs/fs.h"
|
||||
#include "common/fs/path_util.h"
|
||||
#include "common/logging/log.h"
|
||||
#include "core/file_sys/vfs/vfs.h"
|
||||
#include "core/file_sys/vfs/vfs_real.h"
|
||||
|
||||
// For FileTimeStampRaw
|
||||
#include <sys/stat.h>
|
||||
|
||||
#ifdef _MSC_VER
|
||||
#define stat _stat64
|
||||
#endif
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
namespace FS = Common::FS;
|
||||
|
||||
namespace {
|
||||
|
||||
constexpr size_t MaxOpenFiles = 512;
|
||||
|
||||
constexpr FS::FileAccessMode ModeFlagsToFileAccessMode(Mode mode) {
|
||||
switch (mode) {
|
||||
case Mode::Read:
|
||||
return FS::FileAccessMode::Read;
|
||||
case Mode::Write:
|
||||
case Mode::ReadWrite:
|
||||
case Mode::Append:
|
||||
case Mode::ReadAppend:
|
||||
case Mode::WriteAppend:
|
||||
case Mode::All:
|
||||
return FS::FileAccessMode::ReadWrite;
|
||||
default:
|
||||
return {};
|
||||
}
|
||||
}
|
||||
|
||||
} // Anonymous namespace
|
||||
|
||||
RealVfsFilesystem::RealVfsFilesystem() : VfsFilesystem(nullptr) {}
|
||||
RealVfsFilesystem::~RealVfsFilesystem() = default;
|
||||
|
||||
std::string RealVfsFilesystem::GetName() const {
|
||||
return "Real";
|
||||
}
|
||||
|
||||
bool RealVfsFilesystem::IsReadable() const {
|
||||
return true;
|
||||
}
|
||||
|
||||
bool RealVfsFilesystem::IsWritable() const {
|
||||
return true;
|
||||
}
|
||||
|
||||
VfsEntryType RealVfsFilesystem::GetEntryType(std::string_view path_) const {
|
||||
const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
|
||||
if (!FS::Exists(path)) {
|
||||
return VfsEntryType::None;
|
||||
}
|
||||
if (FS::IsDir(path)) {
|
||||
return VfsEntryType::Directory;
|
||||
}
|
||||
|
||||
return VfsEntryType::File;
|
||||
}
|
||||
|
||||
VirtualFile RealVfsFilesystem::OpenFileFromEntry(std::string_view path_, std::optional<u64> size,
|
||||
Mode perms) {
|
||||
const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
|
||||
std::scoped_lock lk{list_lock};
|
||||
|
||||
if (auto it = cache.find(path); it != cache.end()) {
|
||||
if (auto file = it->second.lock(); file) {
|
||||
return file;
|
||||
}
|
||||
}
|
||||
|
||||
if (!size && !FS::IsFile(path)) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
auto reference = std::make_unique<FileReference>();
|
||||
this->InsertReferenceIntoListLocked(*reference);
|
||||
|
||||
auto file = std::shared_ptr<RealVfsFile>(
|
||||
new RealVfsFile(*this, std::move(reference), path, perms, size));
|
||||
cache[path] = file;
|
||||
|
||||
return file;
|
||||
}
|
||||
|
||||
VirtualFile RealVfsFilesystem::OpenFile(std::string_view path_, Mode perms) {
|
||||
return OpenFileFromEntry(path_, {}, perms);
|
||||
}
|
||||
|
||||
VirtualFile RealVfsFilesystem::CreateFile(std::string_view path_, Mode perms) {
|
||||
const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
|
||||
{
|
||||
std::scoped_lock lk{list_lock};
|
||||
cache.erase(path);
|
||||
}
|
||||
|
||||
// Current usages of CreateFile expect to delete the contents of an existing file.
|
||||
if (FS::IsFile(path)) {
|
||||
FS::IOFile temp{path, FS::FileAccessMode::Write, FS::FileType::BinaryFile};
|
||||
|
||||
if (!temp.IsOpen()) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
temp.Close();
|
||||
|
||||
return OpenFile(path, perms);
|
||||
}
|
||||
|
||||
if (!FS::NewFile(path)) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
return OpenFile(path, perms);
|
||||
}
|
||||
|
||||
VirtualFile RealVfsFilesystem::CopyFile(std::string_view old_path_, std::string_view new_path_) {
|
||||
// Unused
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
VirtualFile RealVfsFilesystem::MoveFile(std::string_view old_path_, std::string_view new_path_) {
|
||||
const auto old_path = FS::SanitizePath(old_path_, FS::DirectorySeparator::PlatformDefault);
|
||||
const auto new_path = FS::SanitizePath(new_path_, FS::DirectorySeparator::PlatformDefault);
|
||||
{
|
||||
std::scoped_lock lk{list_lock};
|
||||
cache.erase(old_path);
|
||||
cache.erase(new_path);
|
||||
}
|
||||
if (!FS::RenameFile(old_path, new_path)) {
|
||||
return nullptr;
|
||||
}
|
||||
return OpenFile(new_path, Mode::ReadWrite);
|
||||
}
|
||||
|
||||
bool RealVfsFilesystem::DeleteFile(std::string_view path_) {
|
||||
const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
|
||||
{
|
||||
std::scoped_lock lk{list_lock};
|
||||
cache.erase(path);
|
||||
}
|
||||
return FS::RemoveFile(path);
|
||||
}
|
||||
|
||||
VirtualDir RealVfsFilesystem::OpenDirectory(std::string_view path_, Mode perms) {
|
||||
const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
|
||||
return std::shared_ptr<RealVfsDirectory>(new RealVfsDirectory(*this, path, perms));
|
||||
}
|
||||
|
||||
VirtualDir RealVfsFilesystem::CreateDirectory(std::string_view path_, Mode perms) {
|
||||
const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
|
||||
if (!FS::CreateDirs(path)) {
|
||||
return nullptr;
|
||||
}
|
||||
return std::shared_ptr<RealVfsDirectory>(new RealVfsDirectory(*this, path, perms));
|
||||
}
|
||||
|
||||
VirtualDir RealVfsFilesystem::CopyDirectory(std::string_view old_path_,
|
||||
std::string_view new_path_) {
|
||||
// Unused
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
VirtualDir RealVfsFilesystem::MoveDirectory(std::string_view old_path_,
|
||||
std::string_view new_path_) {
|
||||
const auto old_path = FS::SanitizePath(old_path_, FS::DirectorySeparator::PlatformDefault);
|
||||
const auto new_path = FS::SanitizePath(new_path_, FS::DirectorySeparator::PlatformDefault);
|
||||
|
||||
if (!FS::RenameDir(old_path, new_path)) {
|
||||
return nullptr;
|
||||
}
|
||||
return OpenDirectory(new_path, Mode::ReadWrite);
|
||||
}
|
||||
|
||||
bool RealVfsFilesystem::DeleteDirectory(std::string_view path_) {
|
||||
const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
|
||||
return FS::RemoveDirRecursively(path);
|
||||
}
|
||||
|
||||
std::unique_lock<std::mutex> RealVfsFilesystem::RefreshReference(const std::string& path,
|
||||
Mode perms,
|
||||
FileReference& reference) {
|
||||
std::unique_lock lk{list_lock};
|
||||
|
||||
// Temporarily remove from list.
|
||||
this->RemoveReferenceFromListLocked(reference);
|
||||
|
||||
// Restore file if needed.
|
||||
if (!reference.file) {
|
||||
this->EvictSingleReferenceLocked();
|
||||
|
||||
reference.file =
|
||||
FS::FileOpen(path, ModeFlagsToFileAccessMode(perms), FS::FileType::BinaryFile);
|
||||
if (reference.file) {
|
||||
num_open_files++;
|
||||
}
|
||||
}
|
||||
|
||||
// Reinsert into list.
|
||||
this->InsertReferenceIntoListLocked(reference);
|
||||
|
||||
return lk;
|
||||
}
|
||||
|
||||
void RealVfsFilesystem::DropReference(std::unique_ptr<FileReference>&& reference) {
|
||||
std::scoped_lock lk{list_lock};
|
||||
|
||||
// Remove from list.
|
||||
this->RemoveReferenceFromListLocked(*reference);
|
||||
|
||||
// Close the file.
|
||||
if (reference->file) {
|
||||
reference->file.reset();
|
||||
num_open_files--;
|
||||
}
|
||||
}
|
||||
|
||||
void RealVfsFilesystem::EvictSingleReferenceLocked() {
|
||||
if (num_open_files < MaxOpenFiles || open_references.empty()) {
|
||||
return;
|
||||
}
|
||||
|
||||
// Get and remove from list.
|
||||
auto& reference = open_references.back();
|
||||
this->RemoveReferenceFromListLocked(reference);
|
||||
|
||||
// Close the file.
|
||||
if (reference.file) {
|
||||
reference.file.reset();
|
||||
num_open_files--;
|
||||
}
|
||||
|
||||
// Reinsert into closed list.
|
||||
this->InsertReferenceIntoListLocked(reference);
|
||||
}
|
||||
|
||||
void RealVfsFilesystem::InsertReferenceIntoListLocked(FileReference& reference) {
|
||||
if (reference.file) {
|
||||
open_references.push_front(reference);
|
||||
} else {
|
||||
closed_references.push_front(reference);
|
||||
}
|
||||
}
|
||||
|
||||
void RealVfsFilesystem::RemoveReferenceFromListLocked(FileReference& reference) {
|
||||
if (reference.file) {
|
||||
open_references.erase(open_references.iterator_to(reference));
|
||||
} else {
|
||||
closed_references.erase(closed_references.iterator_to(reference));
|
||||
}
|
||||
}
|
||||
|
||||
RealVfsFile::RealVfsFile(RealVfsFilesystem& base_, std::unique_ptr<FileReference> reference_,
|
||||
const std::string& path_, Mode perms_, std::optional<u64> size_)
|
||||
: base(base_), reference(std::move(reference_)), path(path_),
|
||||
parent_path(FS::GetParentPath(path_)), path_components(FS::SplitPathComponentsCopy(path_)),
|
||||
size(size_), perms(perms_) {}
|
||||
|
||||
RealVfsFile::~RealVfsFile() {
|
||||
base.DropReference(std::move(reference));
|
||||
}
|
||||
|
||||
std::string RealVfsFile::GetName() const {
|
||||
return path_components.empty() ? "" : std::string(path_components.back());
|
||||
}
|
||||
|
||||
std::size_t RealVfsFile::GetSize() const {
|
||||
if (size) {
|
||||
return *size;
|
||||
}
|
||||
auto lk = base.RefreshReference(path, perms, *reference);
|
||||
return reference->file ? reference->file->GetSize() : 0;
|
||||
}
|
||||
|
||||
bool RealVfsFile::Resize(std::size_t new_size) {
|
||||
size.reset();
|
||||
auto lk = base.RefreshReference(path, perms, *reference);
|
||||
return reference->file ? reference->file->SetSize(new_size) : false;
|
||||
}
|
||||
|
||||
VirtualDir RealVfsFile::GetContainingDirectory() const {
|
||||
return base.OpenDirectory(parent_path, perms);
|
||||
}
|
||||
|
||||
bool RealVfsFile::IsWritable() const {
|
||||
return True(perms & Mode::Write);
|
||||
}
|
||||
|
||||
bool RealVfsFile::IsReadable() const {
|
||||
return True(perms & Mode::Read);
|
||||
}
|
||||
|
||||
std::size_t RealVfsFile::Read(u8* data, std::size_t length, std::size_t offset) const {
|
||||
auto lk = base.RefreshReference(path, perms, *reference);
|
||||
if (!reference->file || !reference->file->Seek(static_cast<s64>(offset))) {
|
||||
return 0;
|
||||
}
|
||||
return reference->file->ReadSpan(std::span{data, length});
|
||||
}
|
||||
|
||||
std::size_t RealVfsFile::Write(const u8* data, std::size_t length, std::size_t offset) {
|
||||
size.reset();
|
||||
auto lk = base.RefreshReference(path, perms, *reference);
|
||||
if (!reference->file || !reference->file->Seek(static_cast<s64>(offset))) {
|
||||
return 0;
|
||||
}
|
||||
return reference->file->WriteSpan(std::span{data, length});
|
||||
}
|
||||
|
||||
bool RealVfsFile::Rename(std::string_view name) {
|
||||
return base.MoveFile(path, parent_path + '/' + std::string(name)) != nullptr;
|
||||
}
|
||||
|
||||
// TODO(DarkLordZach): MSVC would not let me combine the following two functions using 'if
|
||||
// constexpr' because there is a compile error in the branch not used.
|
||||
|
||||
template <>
|
||||
std::vector<VirtualFile> RealVfsDirectory::IterateEntries<RealVfsFile, VfsFile>() const {
|
||||
if (perms == Mode::Append) {
|
||||
return {};
|
||||
}
|
||||
|
||||
std::vector<VirtualFile> out;
|
||||
|
||||
const FS::DirEntryCallable callback = [this,
|
||||
&out](const std::filesystem::directory_entry& entry) {
|
||||
const auto full_path_string = FS::PathToUTF8String(entry.path());
|
||||
|
||||
out.emplace_back(base.OpenFileFromEntry(full_path_string, entry.file_size(), perms));
|
||||
|
||||
return true;
|
||||
};
|
||||
|
||||
FS::IterateDirEntries(path, callback, FS::DirEntryFilter::File);
|
||||
|
||||
return out;
|
||||
}
|
||||
|
||||
template <>
|
||||
std::vector<VirtualDir> RealVfsDirectory::IterateEntries<RealVfsDirectory, VfsDirectory>() const {
|
||||
if (perms == Mode::Append) {
|
||||
return {};
|
||||
}
|
||||
|
||||
std::vector<VirtualDir> out;
|
||||
|
||||
const FS::DirEntryCallable callback = [this,
|
||||
&out](const std::filesystem::directory_entry& entry) {
|
||||
const auto full_path_string = FS::PathToUTF8String(entry.path());
|
||||
|
||||
out.emplace_back(base.OpenDirectory(full_path_string, perms));
|
||||
|
||||
return true;
|
||||
};
|
||||
|
||||
FS::IterateDirEntries(path, callback, FS::DirEntryFilter::Directory);
|
||||
|
||||
return out;
|
||||
}
|
||||
|
||||
RealVfsDirectory::RealVfsDirectory(RealVfsFilesystem& base_, const std::string& path_, Mode perms_)
|
||||
: base(base_), path(FS::RemoveTrailingSlash(path_)), parent_path(FS::GetParentPath(path)),
|
||||
path_components(FS::SplitPathComponentsCopy(path)), perms(perms_) {
|
||||
if (!FS::Exists(path) && True(perms & Mode::Write)) {
|
||||
void(FS::CreateDirs(path));
|
||||
}
|
||||
}
|
||||
|
||||
RealVfsDirectory::~RealVfsDirectory() = default;
|
||||
|
||||
VirtualFile RealVfsDirectory::GetFileRelative(std::string_view relative_path) const {
|
||||
const auto full_path = FS::SanitizePath(path + '/' + std::string(relative_path));
|
||||
if (!FS::Exists(full_path) || FS::IsDir(full_path)) {
|
||||
return nullptr;
|
||||
}
|
||||
return base.OpenFile(full_path, perms);
|
||||
}
|
||||
|
||||
VirtualDir RealVfsDirectory::GetDirectoryRelative(std::string_view relative_path) const {
|
||||
const auto full_path = FS::SanitizePath(path + '/' + std::string(relative_path));
|
||||
if (!FS::Exists(full_path) || !FS::IsDir(full_path)) {
|
||||
return nullptr;
|
||||
}
|
||||
return base.OpenDirectory(full_path, perms);
|
||||
}
|
||||
|
||||
VirtualFile RealVfsDirectory::GetFile(std::string_view name) const {
|
||||
return GetFileRelative(name);
|
||||
}
|
||||
|
||||
VirtualDir RealVfsDirectory::GetSubdirectory(std::string_view name) const {
|
||||
return GetDirectoryRelative(name);
|
||||
}
|
||||
|
||||
VirtualFile RealVfsDirectory::CreateFileRelative(std::string_view relative_path) {
|
||||
const auto full_path = FS::SanitizePath(path + '/' + std::string(relative_path));
|
||||
if (!FS::CreateParentDirs(full_path)) {
|
||||
return nullptr;
|
||||
}
|
||||
return base.CreateFile(full_path, perms);
|
||||
}
|
||||
|
||||
VirtualDir RealVfsDirectory::CreateDirectoryRelative(std::string_view relative_path) {
|
||||
const auto full_path = FS::SanitizePath(path + '/' + std::string(relative_path));
|
||||
return base.CreateDirectory(full_path, perms);
|
||||
}
|
||||
|
||||
bool RealVfsDirectory::DeleteSubdirectoryRecursive(std::string_view name) {
|
||||
const auto full_path = FS::SanitizePath(this->path + '/' + std::string(name));
|
||||
return base.DeleteDirectory(full_path);
|
||||
}
|
||||
|
||||
std::vector<VirtualFile> RealVfsDirectory::GetFiles() const {
|
||||
return IterateEntries<RealVfsFile, VfsFile>();
|
||||
}
|
||||
|
||||
FileTimeStampRaw RealVfsDirectory::GetFileTimeStamp(std::string_view path_) const {
|
||||
const auto full_path = FS::SanitizePath(path + '/' + std::string(path_));
|
||||
const auto fs_path = std::filesystem::path{FS::ToU8String(full_path)};
|
||||
struct stat file_status;
|
||||
|
||||
#ifdef _WIN32
|
||||
const auto stat_result = _wstat64(fs_path.c_str(), &file_status);
|
||||
#else
|
||||
const auto stat_result = stat(fs_path.c_str(), &file_status);
|
||||
#endif
|
||||
|
||||
if (stat_result != 0) {
|
||||
return {};
|
||||
}
|
||||
|
||||
return {
|
||||
.created{static_cast<u64>(file_status.st_ctime)},
|
||||
.accessed{static_cast<u64>(file_status.st_atime)},
|
||||
.modified{static_cast<u64>(file_status.st_mtime)},
|
||||
};
|
||||
}
|
||||
|
||||
std::vector<VirtualDir> RealVfsDirectory::GetSubdirectories() const {
|
||||
return IterateEntries<RealVfsDirectory, VfsDirectory>();
|
||||
}
|
||||
|
||||
bool RealVfsDirectory::IsWritable() const {
|
||||
return True(perms & Mode::Write);
|
||||
}
|
||||
|
||||
bool RealVfsDirectory::IsReadable() const {
|
||||
return True(perms & Mode::Read);
|
||||
}
|
||||
|
||||
std::string RealVfsDirectory::GetName() const {
|
||||
return path_components.empty() ? "" : std::string(path_components.back());
|
||||
}
|
||||
|
||||
VirtualDir RealVfsDirectory::GetParentDirectory() const {
|
||||
if (path_components.size() <= 1) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
return base.OpenDirectory(parent_path, perms);
|
||||
}
|
||||
|
||||
VirtualDir RealVfsDirectory::CreateSubdirectory(std::string_view name) {
|
||||
const std::string subdir_path = (path + '/').append(name);
|
||||
return base.CreateDirectory(subdir_path, perms);
|
||||
}
|
||||
|
||||
VirtualFile RealVfsDirectory::CreateFile(std::string_view name) {
|
||||
const std::string file_path = (path + '/').append(name);
|
||||
return base.CreateFile(file_path, perms);
|
||||
}
|
||||
|
||||
bool RealVfsDirectory::DeleteSubdirectory(std::string_view name) {
|
||||
const std::string subdir_path = (path + '/').append(name);
|
||||
return base.DeleteDirectory(subdir_path);
|
||||
}
|
||||
|
||||
bool RealVfsDirectory::DeleteFile(std::string_view name) {
|
||||
const std::string file_path = (path + '/').append(name);
|
||||
return base.DeleteFile(file_path);
|
||||
}
|
||||
|
||||
bool RealVfsDirectory::Rename(std::string_view name) {
|
||||
const std::string new_name = (parent_path + '/').append(name);
|
||||
return base.MoveFile(path, new_name) != nullptr;
|
||||
}
|
||||
|
||||
std::string RealVfsDirectory::GetFullPath() const {
|
||||
auto out = path;
|
||||
std::replace(out.begin(), out.end(), '\\', '/');
|
||||
return out;
|
||||
}
|
||||
|
||||
std::map<std::string, VfsEntryType, std::less<>> RealVfsDirectory::GetEntries() const {
|
||||
if (perms == Mode::Append) {
|
||||
return {};
|
||||
}
|
||||
|
||||
std::map<std::string, VfsEntryType, std::less<>> out;
|
||||
|
||||
const FS::DirEntryCallable callback = [&out](const std::filesystem::directory_entry& entry) {
|
||||
const auto filename = FS::PathToUTF8String(entry.path().filename());
|
||||
out.insert_or_assign(filename,
|
||||
entry.is_directory() ? VfsEntryType::Directory : VfsEntryType::File);
|
||||
return true;
|
||||
};
|
||||
|
||||
FS::IterateDirEntries(path, callback);
|
||||
|
||||
return out;
|
||||
}
|
||||
|
||||
} // namespace FileSys
|
||||
145
src/core/file_sys/vfs/vfs_real.h
Normal file
145
src/core/file_sys/vfs/vfs_real.h
Normal file
@ -0,0 +1,145 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <map>
|
||||
#include <mutex>
|
||||
#include <optional>
|
||||
#include <string_view>
|
||||
#include "common/intrusive_list.h"
|
||||
#include "core/file_sys/mode.h"
|
||||
#include "core/file_sys/vfs/vfs.h"
|
||||
|
||||
namespace Common::FS {
|
||||
class IOFile;
|
||||
}
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
struct FileReference : public Common::IntrusiveListBaseNode<FileReference> {
|
||||
std::shared_ptr<Common::FS::IOFile> file{};
|
||||
};
|
||||
|
||||
class RealVfsFile;
|
||||
class RealVfsDirectory;
|
||||
|
||||
class RealVfsFilesystem : public VfsFilesystem {
|
||||
public:
|
||||
RealVfsFilesystem();
|
||||
~RealVfsFilesystem() override;
|
||||
|
||||
std::string GetName() const override;
|
||||
bool IsReadable() const override;
|
||||
bool IsWritable() const override;
|
||||
VfsEntryType GetEntryType(std::string_view path) const override;
|
||||
VirtualFile OpenFile(std::string_view path, Mode perms = Mode::Read) override;
|
||||
VirtualFile CreateFile(std::string_view path, Mode perms = Mode::ReadWrite) override;
|
||||
VirtualFile CopyFile(std::string_view old_path, std::string_view new_path) override;
|
||||
VirtualFile MoveFile(std::string_view old_path, std::string_view new_path) override;
|
||||
bool DeleteFile(std::string_view path) override;
|
||||
VirtualDir OpenDirectory(std::string_view path, Mode perms = Mode::Read) override;
|
||||
VirtualDir CreateDirectory(std::string_view path, Mode perms = Mode::ReadWrite) override;
|
||||
VirtualDir CopyDirectory(std::string_view old_path, std::string_view new_path) override;
|
||||
VirtualDir MoveDirectory(std::string_view old_path, std::string_view new_path) override;
|
||||
bool DeleteDirectory(std::string_view path) override;
|
||||
|
||||
private:
|
||||
using ReferenceListType = Common::IntrusiveListBaseTraits<FileReference>::ListType;
|
||||
std::map<std::string, std::weak_ptr<VfsFile>, std::less<>> cache;
|
||||
ReferenceListType open_references;
|
||||
ReferenceListType closed_references;
|
||||
std::mutex list_lock;
|
||||
size_t num_open_files{};
|
||||
|
||||
private:
|
||||
friend class RealVfsFile;
|
||||
std::unique_lock<std::mutex> RefreshReference(const std::string& path, Mode perms,
|
||||
FileReference& reference);
|
||||
void DropReference(std::unique_ptr<FileReference>&& reference);
|
||||
|
||||
private:
|
||||
friend class RealVfsDirectory;
|
||||
VirtualFile OpenFileFromEntry(std::string_view path, std::optional<u64> size,
|
||||
Mode perms = Mode::Read);
|
||||
|
||||
private:
|
||||
void EvictSingleReferenceLocked();
|
||||
void InsertReferenceIntoListLocked(FileReference& reference);
|
||||
void RemoveReferenceFromListLocked(FileReference& reference);
|
||||
};
|
||||
|
||||
// An implementation of VfsFile that represents a file on the user's computer.
|
||||
class RealVfsFile : public VfsFile {
|
||||
friend class RealVfsDirectory;
|
||||
friend class RealVfsFilesystem;
|
||||
|
||||
public:
|
||||
~RealVfsFile() override;
|
||||
|
||||
std::string GetName() const override;
|
||||
std::size_t GetSize() const override;
|
||||
bool Resize(std::size_t new_size) override;
|
||||
VirtualDir GetContainingDirectory() const override;
|
||||
bool IsWritable() const override;
|
||||
bool IsReadable() const override;
|
||||
std::size_t Read(u8* data, std::size_t length, std::size_t offset) const override;
|
||||
std::size_t Write(const u8* data, std::size_t length, std::size_t offset) override;
|
||||
bool Rename(std::string_view name) override;
|
||||
|
||||
private:
|
||||
RealVfsFile(RealVfsFilesystem& base, std::unique_ptr<FileReference> reference,
|
||||
const std::string& path, Mode perms = Mode::Read, std::optional<u64> size = {});
|
||||
|
||||
RealVfsFilesystem& base;
|
||||
std::unique_ptr<FileReference> reference;
|
||||
std::string path;
|
||||
std::string parent_path;
|
||||
std::vector<std::string> path_components;
|
||||
std::optional<u64> size;
|
||||
Mode perms;
|
||||
};
|
||||
|
||||
// An implementation of VfsDirectory that represents a directory on the user's computer.
|
||||
class RealVfsDirectory : public VfsDirectory {
|
||||
friend class RealVfsFilesystem;
|
||||
|
||||
public:
|
||||
~RealVfsDirectory() override;
|
||||
|
||||
VirtualFile GetFileRelative(std::string_view relative_path) const override;
|
||||
VirtualDir GetDirectoryRelative(std::string_view relative_path) const override;
|
||||
VirtualFile GetFile(std::string_view name) const override;
|
||||
VirtualDir GetSubdirectory(std::string_view name) const override;
|
||||
VirtualFile CreateFileRelative(std::string_view relative_path) override;
|
||||
VirtualDir CreateDirectoryRelative(std::string_view relative_path) override;
|
||||
bool DeleteSubdirectoryRecursive(std::string_view name) override;
|
||||
std::vector<VirtualFile> GetFiles() const override;
|
||||
FileTimeStampRaw GetFileTimeStamp(std::string_view path) const override;
|
||||
std::vector<VirtualDir> GetSubdirectories() const override;
|
||||
bool IsWritable() const override;
|
||||
bool IsReadable() const override;
|
||||
std::string GetName() const override;
|
||||
VirtualDir GetParentDirectory() const override;
|
||||
VirtualDir CreateSubdirectory(std::string_view name) override;
|
||||
VirtualFile CreateFile(std::string_view name) override;
|
||||
bool DeleteSubdirectory(std::string_view name) override;
|
||||
bool DeleteFile(std::string_view name) override;
|
||||
bool Rename(std::string_view name) override;
|
||||
std::string GetFullPath() const override;
|
||||
std::map<std::string, VfsEntryType, std::less<>> GetEntries() const override;
|
||||
|
||||
private:
|
||||
RealVfsDirectory(RealVfsFilesystem& base, const std::string& path, Mode perms = Mode::Read);
|
||||
|
||||
template <typename T, typename R>
|
||||
std::vector<std::shared_ptr<R>> IterateEntries() const;
|
||||
|
||||
RealVfsFilesystem& base;
|
||||
std::string path;
|
||||
std::string parent_path;
|
||||
std::vector<std::string> path_components;
|
||||
Mode perms;
|
||||
};
|
||||
|
||||
} // namespace FileSys
|
||||
80
src/core/file_sys/vfs/vfs_static.h
Normal file
80
src/core/file_sys/vfs/vfs_static.h
Normal file
@ -0,0 +1,80 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <algorithm>
|
||||
#include <memory>
|
||||
#include <string_view>
|
||||
|
||||
#include "core/file_sys/vfs/vfs.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
class StaticVfsFile : public VfsFile {
|
||||
public:
|
||||
explicit StaticVfsFile(u8 value_, std::size_t size_ = 0, std::string name_ = "",
|
||||
VirtualDir parent_ = nullptr)
|
||||
: value{value_}, size{size_}, name{std::move(name_)}, parent{std::move(parent_)} {}
|
||||
|
||||
std::string GetName() const override {
|
||||
return name;
|
||||
}
|
||||
|
||||
std::size_t GetSize() const override {
|
||||
return size;
|
||||
}
|
||||
|
||||
bool Resize(std::size_t new_size) override {
|
||||
size = new_size;
|
||||
return true;
|
||||
}
|
||||
|
||||
VirtualDir GetContainingDirectory() const override {
|
||||
return parent;
|
||||
}
|
||||
|
||||
bool IsWritable() const override {
|
||||
return false;
|
||||
}
|
||||
|
||||
bool IsReadable() const override {
|
||||
return true;
|
||||
}
|
||||
|
||||
std::size_t Read(u8* data, std::size_t length, std::size_t offset) const override {
|
||||
const auto read = std::min(length, size - offset);
|
||||
std::fill(data, data + read, value);
|
||||
return read;
|
||||
}
|
||||
|
||||
std::size_t Write(const u8* data, std::size_t length, std::size_t offset) override {
|
||||
return 0;
|
||||
}
|
||||
|
||||
std::optional<u8> ReadByte(std::size_t offset) const override {
|
||||
if (offset >= size) {
|
||||
return std::nullopt;
|
||||
}
|
||||
|
||||
return value;
|
||||
}
|
||||
|
||||
std::vector<u8> ReadBytes(std::size_t length, std::size_t offset) const override {
|
||||
const auto read = std::min(length, size - offset);
|
||||
return std::vector<u8>(read, value);
|
||||
}
|
||||
|
||||
bool Rename(std::string_view new_name) override {
|
||||
name = new_name;
|
||||
return true;
|
||||
}
|
||||
|
||||
private:
|
||||
u8 value;
|
||||
std::size_t size;
|
||||
std::string name;
|
||||
VirtualDir parent;
|
||||
};
|
||||
|
||||
} // namespace FileSys
|
||||
29
src/core/file_sys/vfs/vfs_types.h
Normal file
29
src/core/file_sys/vfs/vfs_types.h
Normal file
@ -0,0 +1,29 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <memory>
|
||||
|
||||
#include "common/common_types.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
class VfsDirectory;
|
||||
class VfsFile;
|
||||
class VfsFilesystem;
|
||||
|
||||
// Declarations for Vfs* pointer types
|
||||
|
||||
using VirtualDir = std::shared_ptr<VfsDirectory>;
|
||||
using VirtualFile = std::shared_ptr<VfsFile>;
|
||||
using VirtualFilesystem = std::shared_ptr<VfsFilesystem>;
|
||||
|
||||
struct FileTimeStampRaw {
|
||||
u64 created{};
|
||||
u64 accessed{};
|
||||
u64 modified{};
|
||||
u64 padding{};
|
||||
};
|
||||
|
||||
} // namespace FileSys
|
||||
133
src/core/file_sys/vfs/vfs_vector.cpp
Normal file
133
src/core/file_sys/vfs/vfs_vector.cpp
Normal file
@ -0,0 +1,133 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#include <algorithm>
|
||||
#include <utility>
|
||||
#include "core/file_sys/vfs/vfs_vector.h"
|
||||
|
||||
namespace FileSys {
|
||||
VectorVfsFile::VectorVfsFile(std::vector<u8> initial_data, std::string name_, VirtualDir parent_)
|
||||
: data(std::move(initial_data)), parent(std::move(parent_)), name(std::move(name_)) {}
|
||||
|
||||
VectorVfsFile::~VectorVfsFile() = default;
|
||||
|
||||
std::string VectorVfsFile::GetName() const {
|
||||
return name;
|
||||
}
|
||||
|
||||
size_t VectorVfsFile::GetSize() const {
|
||||
return data.size();
|
||||
}
|
||||
|
||||
bool VectorVfsFile::Resize(size_t new_size) {
|
||||
data.resize(new_size);
|
||||
return true;
|
||||
}
|
||||
|
||||
VirtualDir VectorVfsFile::GetContainingDirectory() const {
|
||||
return parent;
|
||||
}
|
||||
|
||||
bool VectorVfsFile::IsWritable() const {
|
||||
return true;
|
||||
}
|
||||
|
||||
bool VectorVfsFile::IsReadable() const {
|
||||
return true;
|
||||
}
|
||||
|
||||
std::size_t VectorVfsFile::Read(u8* data_, std::size_t length, std::size_t offset) const {
|
||||
const auto read = std::min(length, data.size() - offset);
|
||||
std::memcpy(data_, data.data() + offset, read);
|
||||
return read;
|
||||
}
|
||||
|
||||
std::size_t VectorVfsFile::Write(const u8* data_, std::size_t length, std::size_t offset) {
|
||||
if (offset + length > data.size())
|
||||
data.resize(offset + length);
|
||||
const auto write = std::min(length, data.size() - offset);
|
||||
std::memcpy(data.data() + offset, data_, write);
|
||||
return write;
|
||||
}
|
||||
|
||||
bool VectorVfsFile::Rename(std::string_view name_) {
|
||||
name = name_;
|
||||
return true;
|
||||
}
|
||||
|
||||
void VectorVfsFile::Assign(std::vector<u8> new_data) {
|
||||
data = std::move(new_data);
|
||||
}
|
||||
|
||||
VectorVfsDirectory::VectorVfsDirectory(std::vector<VirtualFile> files_,
|
||||
std::vector<VirtualDir> dirs_, std::string name_,
|
||||
VirtualDir parent_)
|
||||
: files(std::move(files_)), dirs(std::move(dirs_)), parent(std::move(parent_)),
|
||||
name(std::move(name_)) {}
|
||||
|
||||
VectorVfsDirectory::~VectorVfsDirectory() = default;
|
||||
|
||||
std::vector<VirtualFile> VectorVfsDirectory::GetFiles() const {
|
||||
return files;
|
||||
}
|
||||
|
||||
std::vector<VirtualDir> VectorVfsDirectory::GetSubdirectories() const {
|
||||
return dirs;
|
||||
}
|
||||
|
||||
bool VectorVfsDirectory::IsWritable() const {
|
||||
return false;
|
||||
}
|
||||
|
||||
bool VectorVfsDirectory::IsReadable() const {
|
||||
return true;
|
||||
}
|
||||
|
||||
std::string VectorVfsDirectory::GetName() const {
|
||||
return name;
|
||||
}
|
||||
|
||||
VirtualDir VectorVfsDirectory::GetParentDirectory() const {
|
||||
return parent;
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
static bool FindAndRemoveVectorElement(std::vector<T>& vec, std::string_view name) {
|
||||
const auto iter =
|
||||
std::find_if(vec.begin(), vec.end(), [name](const T& e) { return e->GetName() == name; });
|
||||
if (iter == vec.end())
|
||||
return false;
|
||||
|
||||
vec.erase(iter);
|
||||
return true;
|
||||
}
|
||||
|
||||
bool VectorVfsDirectory::DeleteSubdirectory(std::string_view subdir_name) {
|
||||
return FindAndRemoveVectorElement(dirs, subdir_name);
|
||||
}
|
||||
|
||||
bool VectorVfsDirectory::DeleteFile(std::string_view file_name) {
|
||||
return FindAndRemoveVectorElement(files, file_name);
|
||||
}
|
||||
|
||||
bool VectorVfsDirectory::Rename(std::string_view name_) {
|
||||
name = name_;
|
||||
return true;
|
||||
}
|
||||
|
||||
VirtualDir VectorVfsDirectory::CreateSubdirectory(std::string_view subdir_name) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
VirtualFile VectorVfsDirectory::CreateFile(std::string_view file_name) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
void VectorVfsDirectory::AddFile(VirtualFile file) {
|
||||
files.push_back(std::move(file));
|
||||
}
|
||||
|
||||
void VectorVfsDirectory::AddDirectory(VirtualDir dir) {
|
||||
dirs.push_back(std::move(dir));
|
||||
}
|
||||
} // namespace FileSys
|
||||
131
src/core/file_sys/vfs/vfs_vector.h
Normal file
131
src/core/file_sys/vfs/vfs_vector.h
Normal file
@ -0,0 +1,131 @@
|
||||
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
|
||||
// SPDX-License-Identifier: GPL-2.0-or-later
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <array>
|
||||
#include <cstring>
|
||||
#include <memory>
|
||||
#include <string>
|
||||
#include <vector>
|
||||
#include "core/file_sys/vfs/vfs.h"
|
||||
|
||||
namespace FileSys {
|
||||
|
||||
// An implementation of VfsFile that is backed by a statically-sized array
|
||||
template <std::size_t size>
|
||||
class ArrayVfsFile : public VfsFile {
|
||||
public:
|
||||
explicit ArrayVfsFile(const std::array<u8, size>& data_, std::string name_ = "",
|
||||
VirtualDir parent_ = nullptr)
|
||||
: data(data_), name(std::move(name_)), parent(std::move(parent_)) {}
|
||||
|
||||
std::string GetName() const override {
|
||||
return name;
|
||||
}
|
||||
|
||||
std::size_t GetSize() const override {
|
||||
return size;
|
||||
}
|
||||
|
||||
bool Resize(std::size_t new_size) override {
|
||||
return false;
|
||||
}
|
||||
|
||||
VirtualDir GetContainingDirectory() const override {
|
||||
return parent;
|
||||
}
|
||||
|
||||
bool IsWritable() const override {
|
||||
return false;
|
||||
}
|
||||
|
||||
bool IsReadable() const override {
|
||||
return true;
|
||||
}
|
||||
|
||||
std::size_t Read(u8* data_, std::size_t length, std::size_t offset) const override {
|
||||
const auto read = std::min(length, size - offset);
|
||||
std::memcpy(data_, data.data() + offset, read);
|
||||
return read;
|
||||
}
|
||||
|
||||
std::size_t Write(const u8* data_, std::size_t length, std::size_t offset) override {
|
||||
return 0;
|
||||
}
|
||||
|
||||
bool Rename(std::string_view new_name) override {
|
||||
name = new_name;
|
||||
return true;
|
||||
}
|
||||
|
||||
private:
|
||||
std::array<u8, size> data;
|
||||
std::string name;
|
||||
VirtualDir parent;
|
||||
};
|
||||
|
||||
template <std::size_t Size, typename... Args>
|
||||
std::shared_ptr<ArrayVfsFile<Size>> MakeArrayFile(const std::array<u8, Size>& data,
|
||||
Args&&... args) {
|
||||
return std::make_shared<ArrayVfsFile<Size>>(data, std::forward<Args>(args)...);
|
||||
}
|
||||
|
||||
// An implementation of VfsFile that is backed by a vector optionally supplied upon construction
|
||||
class VectorVfsFile : public VfsFile {
|
||||
public:
|
||||
explicit VectorVfsFile(std::vector<u8> initial_data = {}, std::string name_ = "",
|
||||
VirtualDir parent_ = nullptr);
|
||||
~VectorVfsFile() override;
|
||||
|
||||
std::string GetName() const override;
|
||||
std::size_t GetSize() const override;
|
||||
bool Resize(std::size_t new_size) override;
|
||||
VirtualDir GetContainingDirectory() const override;
|
||||
bool IsWritable() const override;
|
||||
bool IsReadable() const override;
|
||||
std::size_t Read(u8* data, std::size_t length, std::size_t offset) const override;
|
||||
std::size_t Write(const u8* data, std::size_t length, std::size_t offset) override;
|
||||
bool Rename(std::string_view name) override;
|
||||
|
||||
virtual void Assign(std::vector<u8> new_data);
|
||||
|
||||
private:
|
||||
std::vector<u8> data;
|
||||
VirtualDir parent;
|
||||
std::string name;
|
||||
};
|
||||
|
||||
// An implementation of VfsDirectory that maintains two vectors for subdirectories and files.
|
||||
// Vector data is supplied upon construction.
|
||||
class VectorVfsDirectory : public VfsDirectory {
|
||||
public:
|
||||
explicit VectorVfsDirectory(std::vector<VirtualFile> files = {},
|
||||
std::vector<VirtualDir> dirs = {}, std::string name = "",
|
||||
VirtualDir parent = nullptr);
|
||||
~VectorVfsDirectory() override;
|
||||
|
||||
std::vector<VirtualFile> GetFiles() const override;
|
||||
std::vector<VirtualDir> GetSubdirectories() const override;
|
||||
bool IsWritable() const override;
|
||||
bool IsReadable() const override;
|
||||
std::string GetName() const override;
|
||||
VirtualDir GetParentDirectory() const override;
|
||||
bool DeleteSubdirectory(std::string_view subdir_name) override;
|
||||
bool DeleteFile(std::string_view file_name) override;
|
||||
bool Rename(std::string_view name) override;
|
||||
VirtualDir CreateSubdirectory(std::string_view subdir_name) override;
|
||||
VirtualFile CreateFile(std::string_view file_name) override;
|
||||
|
||||
virtual void AddFile(VirtualFile file);
|
||||
virtual void AddDirectory(VirtualDir dir);
|
||||
|
||||
private:
|
||||
std::vector<VirtualFile> files;
|
||||
std::vector<VirtualDir> dirs;
|
||||
|
||||
VirtualDir parent;
|
||||
std::string name;
|
||||
};
|
||||
|
||||
} // namespace FileSys
|
||||
Reference in New Issue
Block a user