FileMapping.h

// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright (c) Microsoft Corporation. All rights reserved

#pragma once

#include "File.h"

class CFileMapping : public CFile
{
  public:
    CFileMapping();
    virtual ~CFileMapping();

    BOOL CreateFile(_In_ PCWSTR pFileName, DWORD desiredAccess, DWORD creationDisposition, DWORD sharedMode = 0,
                    _Inout_opt_ LPSECURITY_ATTRIBUTES lpSecurityAttributes = nullptr, DWORD flagsAndAttributes = 0,
                    _Inout_opt_ HANDLE templateFileHandle = nullptr)

    {
        return CFile::CreateFile(pFileName, desiredAccess, creationDisposition, sharedMode, lpSecurityAttributes,
                                 flagsAndAttributes, templateFileHandle);
    }

    BOOL IsEndOfFile()
    {
        return CFile::IsEndOfFile();
    }
    VOID NextLine()
    {
        CFile::NextLine();
    }

    const WCHAR *GetReadBufferPointer()
    {
        return CFile::GetReadBufferPointer();
    }
    DWORD_PTR GetFileSize()
    {
        return CFile::GetFileSize();
    }

    LPCWSTR GetFileName()
    {
        return CFile::GetFileName();
    }

  protected:
    BOOL SetupReadBuffer();

  private:
    HANDLE _fileMappingHandle; // file handle for CreateFileMapping
    const VOID *_pMapBuffer;   // read buffer memory.
};