如何使用boost删除目录中的空文件夹 [英] how to remove empty folders in a directory using boost

问题描述

如何删除目录中的空文件夹。 boost :: filesystem :: recursive_directory_iterator任何人都可以帮助我

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

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();
        }


    }

}

应用程序崩溃。

the application crash.

推荐答案

我在 http：/上发了一篇论坛帖子（[Filesystem] remove和recursive_directory_iterator） /news.gmane.org/gmane.comp.lib.boost.user [ ^ ]。不确定它是否是功能。将for循环转换为while并在删除之前增加迭代器对我来说是个窍门：

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:

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;
   }
}

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