有什么方法可以检查文件名是否存在包含正则表达式的文件

Question

Given the path you are search under, and the file name contains regular expression, is there any way to check whether there is any file satisfy the file name pattern exists under this path? In C++?? for example: under path

/path

I want to search the file "foo.*"

foo.* 

the result could be foo.1 or foo.2 or whatever. I would like to get the result(I mean I want to know whether the file exist and the exact file name), Thanks

Answer 1

Look into boost::filesystem , otherwise you will need to look at the api for your os.

Here is an example (untested):

boost::filesystem::path dir("/path");
boost::filesystem::directory_iterator it(dir), end;
BOOST_FOREACH(const boost::filesystem::path& p, std::make_pair(it, end))
{
    if(boost::filesystem::is_regular_file(p))
    {
        if(p.stem().string() == "foo")
        {
            std::cout << p.extension() << '\n';
        }
    }
}