给sql填充数据

int CSQLMake::MakeSqlFit(std::string &strSql, CParaSet &oInPara)
{

    int iRet = 0;
    std::string::size_type iPos = strSql.find("where");
    if (iPos == std::string::npos)
    {
        return iRet;
    }
    std::string strSelect = strSql.substr(0, iPos);
    // 此处来处理on的情况

    std::string strOn;
    std::string::size_type stOn = strSelect.find("on");
    if (std::string::npos != stOn)
    {
        strOn = strSelect.substr(stOn+2);
        strSelect = strSelect.substr(0, stOn);
        MakeOnFilter(strOn, oInPara);
        if (!strOn.empty()) {
            strSelect += "on" + strOn;
        }
        else {
            strSelect = strSelect + strOn;
        }
    }

    std::string  strFilter = strSql.substr(iPos+5);
    iRet = MakeFilter(strFilter, oInPara);

    // 这里暂时先加一个判断条件 strFilter != ")", 如果strFilter只有一个)时，不需要加where
    if (!strFilter.empty() && strFilter != ")") 
    {
        strSql = strSelect + "where" + strFilter;
    }
    else 
    {
        strSql = strSelect + strFilter;
    }
    return iRet;
}