C++ How to put the names of files within a directory into a vector?

Question

I simply need to put all the files (or file names?) within a directory into a vector so that I can sort them and open them in order.

I literally have no idea how to do this since this my first encounter with C++. I have tried boost::filesystem but I am having no success as this is quite unfamiliar to me. Please help!

I've actually found a method I think will work however I am now struggling with adding a linker to the command line but I think if I ask about that here it'll exceed the scope of the original question.

Try to look at this http://stackoverflow.com/questions/4283546/cboostfilesystem-how-can-i-get-a-list-of-files-in-a-folder-in-which-the-fi — HAL9000, Dec 03 '13 at 08:37

score 6 · Answer 1 · answered Dec 03 '13 at 08:39

6

namespace fs = boost::filesystem;
fs::directory_iterator b("path of directory"), e;
std::vector<fs::path> paths(b, e);

This includes sub-directories (but not their contents). If you want to exclude sub-directories, you can use fs::is_directory on a path to check if it is a directory. If you want to include the contents of the sub-directories, then you can use a recursive_directory_iterator instead of a directory_iterator.

answered Dec 03 '13 at 08:39

Benjamin Lindley

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With c++17 you no longer need boost and use std::filesystem – drake14w Jan 23 '22 at 17:51

score 4 · Accepted Answer · edited May 23 '17 at 10:25

4

taken from your previous question:

std::vector<std::string> filenames;
dpdf = opendir("/data/files");
if (dpdf != NULL) {
   while (epdf = readdir(dpdf)) {
      filenames.push_back(std::string(epdf->d_name));
   }
}

edited May 23 '17 at 10:25

Community

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answered Dec 03 '13 at 08:47

stefaanv

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C++ How to put the names of files within a directory into a vector?

2 Answers2