问使用std::ifstream而不是文件缓存在磁盘上强制读取

EN

SomeStructure  s = LoadData(fileName);
while(!DataValid(s))
    s = LoadData(fileName);


SomeStructure LoadData(const std::string& fileName)
{
    std::ifstream fileStream;
    while(!OpenFileRead(fileName, fileStream))
    {
        std::cout<<"File not found, please update it";
        fileStream.close();
        //Wait for use input
        std::string dummy;
        std::getline(std::cin, dummy);
    }
    //... Read file, fill structure, and return
    std::string line;   
    while(std::getline(fileStream, line) && line!="")
    {
        //At this point, I can see that line is wrong
        StringArray namedatearray=Utils::String::Split(line, "|");
        assert(namedatearray.size()==2);
        //Add data to my structure ( a map)
     }
     fileStream.close();
     //return structure
}

bool OpenFileRead(const std::string& name, std::fstream& file)
{    
    file.open(name.c_str(), std::ios::in);
    return !file.fail();
}