Is there a way to get a linux directory size in c++?

does linux provide such a function? Thanks!

Code:

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du -sh dirname

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on the command line

I don't think it's possible to do it directly in C++. You will probably have to write a recursive function to do it.

Quote:

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Originally Posted by meili100

does linux provide such a function? Thanks!

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Next door down...

http://cboard.cprogramming.com/forumdisplay.php?f=9

Moved to Linux Programming.

get all the files in the dir
do stat() on each file
accumulate the size

And use Boost.Filesystem's recursive_directory_iterator to do it. For example, if you're not worried about symlinks, you can do this:

Code:

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#include <boost/cstdint.hpp>
#include <algorithm>
#include <boost/filesystem.hpp>
#include <boost/bind.hpp>
#include <boost/iterators/transform_iterator.hpp>
namespace fs = boost::filesystem;

boost::uintmax_t dir_size(const fs::path &p)
{
  return std::accumulate(
    boost::make_transform_iterator(&fs::file_size, fs::recursive_directory_iterator(p)),
    boost::make_transform_iterator(&fs::file_size, fs::recursive_directory_iterator()),
    static_cast<boost::uintmax_t>(0));
}

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