mirror of
https://git.h3cjp.net/H3cJP/citra.git
synced 2024-12-12 05:45:27 +00:00
100 lines
3 KiB
C++
100 lines
3 KiB
C++
// Copyright 2014 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <cstddef>
|
|
#include <memory>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "common/common_types.h"
|
|
#include "common/file_util.h"
|
|
|
|
#include "core/file_sys/archive_backend.h"
|
|
#include "core/file_sys/directory_backend.h"
|
|
#include "core/file_sys/file_backend.h"
|
|
#include "core/hle/result.h"
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// FileSys namespace
|
|
|
|
namespace FileSys {
|
|
|
|
/**
|
|
* Helper which implements a backend accessing the host machine's filesystem.
|
|
* This should be subclassed by concrete archive types, which will provide the
|
|
* base directory on the host filesystem and override any required functionality.
|
|
*/
|
|
class DiskArchive : public ArchiveBackend {
|
|
public:
|
|
DiskArchive(const std::string& mount_point_) : mount_point(mount_point_) {}
|
|
|
|
virtual std::string GetName() const override { return "DiskArchive: " + mount_point; }
|
|
|
|
ResultVal<std::unique_ptr<FileBackend>> OpenFile(const Path& path, const Mode mode) const override;
|
|
ResultCode DeleteFile(const Path& path) const override;
|
|
bool RenameFile(const Path& src_path, const Path& dest_path) const override;
|
|
bool DeleteDirectory(const Path& path) const override;
|
|
ResultCode CreateFile(const Path& path, u64 size) const override;
|
|
bool CreateDirectory(const Path& path) const override;
|
|
bool RenameDirectory(const Path& src_path, const Path& dest_path) const override;
|
|
std::unique_ptr<DirectoryBackend> OpenDirectory(const Path& path) const override;
|
|
u64 GetFreeBytes() const override;
|
|
|
|
protected:
|
|
friend class DiskFile;
|
|
friend class DiskDirectory;
|
|
|
|
std::string mount_point;
|
|
};
|
|
|
|
class DiskFile : public FileBackend {
|
|
public:
|
|
DiskFile(const DiskArchive& archive, const Path& path, const Mode mode);
|
|
|
|
ResultCode Open() override;
|
|
ResultVal<size_t> Read(u64 offset, size_t length, u8* buffer) const override;
|
|
ResultVal<size_t> Write(u64 offset, size_t length, bool flush, const u8* buffer) const override;
|
|
u64 GetSize() const override;
|
|
bool SetSize(u64 size) const override;
|
|
bool Close() const override;
|
|
|
|
void Flush() const override {
|
|
file->Flush();
|
|
}
|
|
|
|
protected:
|
|
std::string path;
|
|
Mode mode;
|
|
std::unique_ptr<FileUtil::IOFile> file;
|
|
};
|
|
|
|
class DiskDirectory : public DirectoryBackend {
|
|
public:
|
|
DiskDirectory(const DiskArchive& archive, const Path& path);
|
|
|
|
~DiskDirectory() override {
|
|
Close();
|
|
}
|
|
|
|
bool Open() override;
|
|
u32 Read(const u32 count, Entry* entries) override;
|
|
|
|
bool Close() const override {
|
|
return true;
|
|
}
|
|
|
|
protected:
|
|
std::string path;
|
|
u32 total_entries_in_directory;
|
|
FileUtil::FSTEntry directory;
|
|
|
|
// We need to remember the last entry we returned, so a subsequent call to Read will continue
|
|
// from the next one. This iterator will always point to the next unread entry.
|
|
std::vector<FileUtil::FSTEntry>::iterator children_iterator;
|
|
};
|
|
|
|
} // namespace FileSys
|