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// Copyright 2014 The PDFium Authors
// 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_FILEACCESS_IFACE_H_
#define CORE_FXCRT_FILEACCESS_IFACE_H_
#include <memory>
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/span.h"
class FileAccessIface {
public:
static std::unique_ptr<FileAccessIface> Create();
virtual ~FileAccessIface() = default;
// Opens in read-only mode. `fileName` is UTF-8 on all platforms.
virtual bool Open(ByteStringView fileName) = 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(pdfium::span<uint8_t> buffer) = 0;
virtual size_t Write(pdfium::span<const uint8_t> buffer) = 0;
virtual size_t ReadPos(pdfium::span<uint8_t> buffer, FX_FILESIZE pos) = 0;
virtual bool Flush() = 0;
virtual bool Truncate(FX_FILESIZE szFile) = 0;
};
#endif // CORE_FXCRT_FILEACCESS_IFACE_H_