suyu/src/core/file_sys/file_backend.h
Yuri Kunde Schlesner a1f08788d9 Archive: Correct a few incorrect types in function signatures
Buffer lengths should be size_t, and file offsets should be u64.
2015-07-13 21:10:12 -03:00

71 lines
1.8 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 "common/common_types.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
class FileBackend : NonCopyable {
public:
FileBackend() { }
virtual ~FileBackend() { }
/**
* Open the file
* @return true if the file opened correctly
*/
virtual bool Open() = 0;
/**
* Read data from the file
* @param offset Offset in bytes to start reading data from
* @param length Length in bytes of data to read from file
* @param buffer Buffer to read data into
* @return Number of bytes read
*/
virtual size_t Read(u64 offset, size_t length, u8* buffer) const = 0;
/**
* Write data to the file
* @param offset Offset in bytes to start writing data to
* @param length Length in bytes of data to write to file
* @param flush The flush parameters (0 == do not flush)
* @param buffer Buffer to read data from
* @return Number of bytes written
*/
virtual size_t Write(u64 offset, size_t length, bool flush, const u8* buffer) const = 0;
/**
* Get the size of the file in bytes
* @return Size of the file in bytes
*/
virtual u64 GetSize() const = 0;
/**
* Set the size of the file in bytes
* @param size New size of the file
* @return true if successful
*/
virtual bool SetSize(u64 size) const = 0;
/**
* Close the file
* @return true if the file closed correctly
*/
virtual bool Close() const = 0;
/**
* Flushes the file
*/
virtual void Flush() const = 0;
};
} // namespace FileSys