how to remove empty folders in a directory using boost

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how to remove empty folders in a directory. boost::filesystem::recursive_directory_iterator can any one help me

C++

for(boost::filesystem::recursive_directory_iterator it(musicPaths); it != boost::filesystem::recursive_directory_iterator(); ++it)
{
    if ( is_directory(it->status()) )
    {

        //
        boost::filesystem::path pp = it->path();
        if( is_empty( pp))
        {
             // path removePath=it->path().filename();
            //string str = pp.string();

            bool bres=boost::filesystem3::remove(pp);
        //  boost::filesystem::current_path=pp.current_path();

            //pp=pp.parent_path();
        }


    }

}

the application crash.

Posted 7-Sep-12 0:07am

Himansu sekhar bal

Updated 7-Sep-12 0:13am

Jochen Arndt

v3

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Jochen Arndt 7-Sep-12 6:43am

Where does it crash? Any messages?
You may add a try-catch block to your code:
try
{
// your code
}
catch (exception& e)
{
cout << e.what() << endl;
}

Chris Meech 7-Sep-12 13:25pm

Just a guess but perhaps the call to is_epmty() returns true when there are no files but the path may contain other directories.

Himansu sekhar bal 10-Sep-12 1:14am

ya u r right,

1 solution

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Gast128 · Answer 1 · 2014-06-09T02:29:00

I made a forum post ([Filesystem] remove and recursive_directory_iterator) on http://news.gmane.org/gmane.comp.lib.boost.user[^]. Not sure if it is a 'feature'. Turning the for loop into while and increment iterator before remove does the trick for me:

C++

fs::recursive_directory_iterator it(pthDirectory);
fs::recursive_directory_iterator itEnd;

while (it != itEnd)
{
   boost::system::error_code  ec;
   const fs::path&            rPath = it->path();

   if (fs::is_directory(rPath, ec) && fs::is_empty(rPath, ec))
   {
      const fs::path pth = rPath;
      ++it;

      fs::remove(pth, ec);
   }
   else
   {
      ++it;
   }
}