std::filesystem::path::stem (3) - Linux Manuals

std::filesystem::path::stem: std::filesystem::path::stem


std::filesystem::path::stem - std::filesystem::path::stem


path stem() const; (since C++17)

Returns the filename identified by the generic-format path stripped of its extension.
Returns the substring from the beginning of filename() up to and not including the last period (.) character, with the following exceptions:
If the first character in the filename is a period, that period is ignored (a filename like ".profile" is not treated as an extension)
If the filename is one of the special filesystem components dot or dot-dot, or if it has no periods, the function returns the entire filename().



Return value

The stem of the filename identified by the path (i.e. the filename without the final extension).




// Run this code

  #include <iostream>
  #include <filesystem>
  namespace fs = std::filesystem;

  int main()
      std::cout << fs::path("/foo/bar.txt").stem() << '\n'
                << fs::path("/foo/.bar").stem() << '\n';

      for (fs::path p = ""; !p.extension().empty(); p = p.stem())
          std::cout << p.extension() << '\n';



See also

          returns the filename path component
filename (public member function)
          returns the file extension path component
extension (public member function)