memmapfilehadle.cpp

打印数据生成和模拟

// MemMapFileHadle.cpp: 

#include "stdafx.h"
#include "..\ToolSoftForprint.h"
#include "MemMapFileHadle.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CMemMapFileHadle::CMemMapFileHadle()
{

}

CMemMapFileHadle::~CMemMapFileHadle()
{

}

BOOL CMemMapFileHadle::MapFile(CString sFileName)
{
  char pszPathName[200];
  strcpy(pszPathName,sFileName);

   hFile = CreateFile(pszPathName, GENERIC_WRITE | GENERIC_READ,
      0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);

   if (hFile == INVALID_HANDLE_VALUE)
   {
      AfxMessageBox("内存映射文件创建失败");
	   return(FALSE);
   }

   dwFileSize = GetFileSize(hFile, NULL);

   hFileMap = CreateFileMapping(hFile, NULL, PAGE_READWRITE,
      0, dwFileSize + 655300*sizeof(WCHAR), NULL);

   if (hFileMap == NULL) 
   {
      AfxMessageBox("内存映射文件创建失败");
      CloseHandle(hFile);

      return(FALSE);
   }


   lpvFile = MapViewOfFile(hFileMap, FILE_MAP_WRITE, 0, 0, 0);

   if (lpvFile == NULL) 
   {
      AfxMessageBox("内存映射文件视图创建失败");
      CloseHandle(hFileMap);
      CloseHandle(hFile);
      return(FALSE);
   }
   return TRUE;
   lpchANSI = (LPSTR) lpvFile;
}

void CMemMapFileHadle::RevFileContent()
{
      lpchANSI[dwFileSize / sizeof(CHAR)] = 0;

      _strrev(lpchANSI);

      lpchANSI = strchr(lpchANSI, '\n'); 
}

BOOL CMemMapFileHadle::DismapFile()
{	
   UnmapViewOfFile(lpvFile);
   CloseHandle(hFileMap);

   SetFilePointer(hFile, dwFileSize, NULL, FILE_BEGIN);

   SetEndOfFile(hFile);
   CloseHandle(hFile);
   return TRUE;
}

BOOL CMemMapFileHadle::SeeExistString(CString sInput)
{
    BOOL bOutPut=FALSE;
	BOOL bNewLine;
	BOOL bIsComment;
	int nLength=sInput.GetLength();
	if (nLength==0)
		AfxMessageBox("查看文件存在字符时传入空格");
	while (lpchANSI)
	{
		if (*lpchANSI=='\n')
		{
			bNewLine=TRUE;
			bIsComment=FALSE;
		}
	//	if (NewLine==TRUE)
		//{
	//	}
			

			

		lpchANSI++;
	}
	return bOutPut;
}