77c684c114
* Add VfsFile and VfsDirectory classes * Finish abstract Vfs classes * Implement RealVfsFile (computer fs backend) * Finish RealVfsFile and RealVfsDirectory * Finished OffsetVfsFile * More changes * Fix import paths * Major refactor * Remove double const * Use experimental/filesystem or filesystem depending on compiler * Port partition_filesystem * More changes * More Overhaul * FSP_SRV fixes * Fixes and testing * Try to get filesystem to compile * Filesystem on linux * Remove std::filesystem and document/test * Compile fixes * Missing include * Bug fixes * Fixes * Rename v_file and v_dir * clang-format fix * Rename NGLOG_* to LOG_* * Most review changes * Fix TODO * Guess 'main' to be Directory by filename
47 lines
1.6 KiB
C++
47 lines
1.6 KiB
C++
// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include "core/file_sys/vfs.h"
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namespace FileSys {
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// An implementation of VfsFile that wraps around another VfsFile at a certain offset.
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// Similar to seeking to an offset.
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// If the file is writable, operations that would write past the end of the offset file will expand
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// the size of this wrapper.
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struct OffsetVfsFile : public VfsFile {
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OffsetVfsFile(std::shared_ptr<VfsFile> file, size_t size, size_t offset = 0,
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const std::string& new_name = "");
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std::string GetName() const override;
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size_t GetSize() const override;
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bool Resize(size_t new_size) override;
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std::shared_ptr<VfsDirectory> GetContainingDirectory() const override;
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bool IsWritable() const override;
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bool IsReadable() const override;
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size_t Read(u8* data, size_t length, size_t offset) const override;
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size_t Write(const u8* data, size_t length, size_t offset) override;
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boost::optional<u8> ReadByte(size_t offset) const override;
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std::vector<u8> ReadBytes(size_t size, size_t offset) const override;
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std::vector<u8> ReadAllBytes() const override;
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bool WriteByte(u8 data, size_t offset) override;
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size_t WriteBytes(std::vector<u8> data, size_t offset) override;
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bool Rename(const std::string& name) override;
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size_t GetOffset() const;
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private:
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size_t TrimToFit(size_t r_size, size_t r_offset) const;
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std::shared_ptr<VfsFile> file;
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size_t offset;
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size_t size;
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std::string name;
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};
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} // namespace FileSys
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