VC++文件相关操作的函数封装实现

在开发编译工具中，需要用到文件的相关操作，于是就封装了相关的函数实现：

//判断文件是否存在
BOOL FileIsExist(CString strFileName)
{
	CFileFind finder;
	BOOL bWorking = finder.FindFile(strFileName);
	while(bWorking)
	{
		return TRUE;
	}
	return FALSE;
}
//获取ini文件信息
CString GetIniString(CString strAppName, CString strKeyName, CString strDefault, CString strFileName)
{
	CString strRet;
	const int nMaxLength = 1024;
	GetPrivateProfileString(strAppName, strKeyName, strDefault,strRet.GetBuffer(nMaxLength), nMaxLength,strFileName);
	strRet.ReleaseBuffer();
	return strRet;
}

// 得到文件的后缀名
CString GetFileExtension(CString fileName)
{
	CString strFileNameExt = TEXT("");

	int nPosExt = fileName.ReverseFind(TEXT('.'));
	strFileNameExt = fileName.Right(fileName.GetLength() - nPosExt - 1);
	return strFileNameExt;
}


//获取运行路径
CString GetRunPath()
{

	TCHAR cbFilename[MAX_PATH + 1]={''}; 
	GetModuleFileName(NULL, cbFilename, MAX_PATH); 
	CString strPath=cbFilename; 
	strPath=strPath.Left(strPath.ReverseFind('\')); 
	return strPath;
}

// 根据一个路径创建目录
void CreatePath(CString strPath)
{
	CString dirName;
	CString strSub;
	CString strDrive;
	int nPos = 0;

	nPos = strPath.Find(TEXT(":"));
	dirName = strPath.Right(strPath.GetLength() - nPos -1);
	strDrive = strPath.Left(nPos + 1);
	int ia = 1;
	while (1)
	{
		AfxExtractSubString(strSub, dirName, ia, TEXT('\'));
		if (TEXT("") == strSub)
		{
			break;
		}
		ia++;
		strDrive += TEXT("\") + strSub;
		if (!PathFileExists(strDrive))
		{
			CreateDirectory(strDrive, NULL);
		}
	}
}



// 删除一个目录下的所有文件
bool DeleteDirFiles(CString strDir)
{
	//   CreateDirectory(strDir, NULL);
	CreatePath(strDir);
	CFileFind finder;
	CString strFindDir;

	strFindDir.Format(TEXT("%s\*.*"), strDir);
	//   MessageBox(strFindDir);
	BOOL bWorking = finder.FindFile(strFindDir);
	while(bWorking)
	{
		bWorking = finder.FindNextFile();

		if (!finder.IsDirectory())
		{
			DeleteFile(finder.GetFilePath());
		}
	}
	finder.Close();
	return false;
}

//根据路径获取文件名
CString GetFileNameFromPath(CString strPath)
{
	CString strDirName = TEXT("");

	int nPos = strPath.ReverseFind(TEXT('\'));
	if (-1 != nPos)
	{
		strDirName = strPath.Right(strPath.GetLength() - nPos -1);
	}

	return strDirName;
}