suyu/src/core/file_sys/vfs_concat.h

48 lines
1.7 KiB
C++
Raw Normal View History

2018-08-10 02:46:41 +02:00
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <map>
2018-08-10 02:46:41 +02:00
#include <memory>
#include <string_view>
#include "core/file_sys/vfs.h"
namespace FileSys {
// Class that wraps multiple vfs files and concatenates them, making reads seamless. Currently
// read-only.
class ConcatenatedVfsFile : public VfsFile {
2018-08-10 05:10:32 +02:00
ConcatenatedVfsFile(std::vector<VirtualFile> files, std::string name);
ConcatenatedVfsFile(std::map<u64, VirtualFile> files, std::string name);
2018-08-10 02:46:41 +02:00
public:
~ConcatenatedVfsFile() override;
/// Wrapper function to allow for more efficient handling of files.size() == 0, 1 cases.
static VirtualFile MakeConcatenatedFile(std::vector<VirtualFile> files, std::string name);
/// Convenience function that turns a map of offsets to files into a concatenated file, filling
/// gaps with a given filler byte.
static VirtualFile MakeConcatenatedFile(u8 filler_byte, std::map<u64, VirtualFile> files,
std::string name);
2018-08-10 02:46:41 +02:00
std::string GetName() const override;
std::size_t GetSize() const override;
bool Resize(std::size_t new_size) override;
2018-08-10 02:46:41 +02:00
std::shared_ptr<VfsDirectory> 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;
2018-08-10 02:46:41 +02:00
bool Rename(std::string_view name) override;
private:
// Maps starting offset to file -- more efficient.
std::map<u64, VirtualFile> files;
2018-08-10 02:46:41 +02:00
std::string name;
};
} // namespace FileSys