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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef CORE_FXCRT_IFX_FILEACCESS_H_
#define CORE_FXCRT_IFX_FILEACCESS_H_
#include <algorithm>
#include <memory>
#include "core/fxcrt/fx_safe_types.h"
#include "core/fxcrt/fx_stream.h"
#include "core/fxcrt/fx_string.h"
class IFX_FileAccess {
public:
static std::unique_ptr<IFX_FileAccess> Create();
virtual ~IFX_FileAccess() {}
virtual bool Open(const ByteStringView& fileName, uint32_t dwMode) = 0;
virtual bool Open(const WideStringView& fileName, uint32_t dwMode) = 0;
virtual void Close() = 0;
virtual FX_FILESIZE GetSize() const = 0;
virtual FX_FILESIZE GetPosition() const = 0;
virtual FX_FILESIZE SetPosition(FX_FILESIZE pos) = 0;
virtual size_t Read(void* pBuffer, size_t szBuffer) = 0;
virtual size_t Write(const void* pBuffer, size_t szBuffer) = 0;
virtual size_t ReadPos(void* pBuffer, size_t szBuffer, FX_FILESIZE pos) = 0;
virtual size_t WritePos(const void* pBuffer,
size_t szBuffer,
FX_FILESIZE pos) = 0;
virtual bool Flush() = 0;
virtual bool Truncate(FX_FILESIZE szFile) = 0;
};
#endif // CORE_FXCRT_IFX_FILEACCESS_H_
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