cf0a7cd1c1
struct should be used when the data type is very simple or otherwise has no invariants associated with it. Given these are used to form a hierarchy, class should be used instead.
51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
// Copyright 2018 yuzu emulator team
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <memory>
|
|
#include <string_view>
|
|
|
|
#include "core/file_sys/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(std::shared_ptr<VfsFile> file, size_t size, size_t offset = 0,
|
|
std::string new_name = "", VirtualDir new_parent = nullptr);
|
|
|
|
std::string GetName() const override;
|
|
size_t GetSize() const override;
|
|
bool Resize(size_t new_size) override;
|
|
std::shared_ptr<VfsDirectory> GetContainingDirectory() const override;
|
|
bool IsWritable() const override;
|
|
bool IsReadable() const override;
|
|
size_t Read(u8* data, size_t length, size_t offset) const override;
|
|
size_t Write(const u8* data, size_t length, size_t offset) override;
|
|
boost::optional<u8> ReadByte(size_t offset) const override;
|
|
std::vector<u8> ReadBytes(size_t size, size_t offset) const override;
|
|
std::vector<u8> ReadAllBytes() const override;
|
|
bool WriteByte(u8 data, size_t offset) override;
|
|
size_t WriteBytes(const std::vector<u8>& data, size_t offset) override;
|
|
|
|
bool Rename(std::string_view name) override;
|
|
|
|
size_t GetOffset() const;
|
|
|
|
private:
|
|
size_t TrimToFit(size_t r_size, size_t r_offset) const;
|
|
|
|
std::shared_ptr<VfsFile> file;
|
|
size_t offset;
|
|
size_t size;
|
|
std::string name;
|
|
VirtualDir parent;
|
|
};
|
|
|
|
} // namespace FileSys
|