Can I use a mask to iterate files in a directory with Boost?

Question

I want to iterate over all files in a directory matching something like somefiles*.txt.

Does boost::filesystem have something built in to

Answer 1

There is a Boost Range Adaptors way:

#define BOOST_RANGE_ENABLE_CONCEPT_ASSERT 0
#include 
#include 

namespace bfs = boost::filesystem;
namespace ba = boost::adaptors;

const std::string target_path( "/my/directory/" );
const boost::regex my_filter( "somefiles.*\.txt" );
boost::smatch what;

for (auto &entry: boost::make_iterator_range(bfs::directory_iterator(target_path), {})
| ba::filtered(static_cast(&bfs::is_regular_file))
| ba::filtered([&](const bfs::path &path){ return boost::regex_match(path.filename().string(), what, my_filter); })
)
{
  // There are only files matching defined pattern "somefiles*.txt".
  std::cout << entry.path().filename() << std::endl;
}