[boost] [program_options][filesystem] custom validator for std::vector<filesystem::path>

From: Chris Weed (chrisweed_at_[hidden])
Date: 2006-01-11 11:48:22

Hi,

I made a custom validator for filesystem::path and that works, but I
can't seem to get the same to work for std::vector<filesystem::path>.

I keep getting an exception about multiple_occurrences when I use it.

Here is the code for the validator:

void validate(boost::any& v,
              const std::vector<std::string>& values,
              std::vector<boost::filesystem::path>* target_type, int)
{
  using namespace boost::program_options;

  // Make sure no previous assignment to 'v' was made.
  validators::check_first_occurrence(v);

  std::vector<boost::filesystem::path> result;
  for(size_t i=0;i<values.size();++i)
  {
    result.push_back(boost::filesystem::path(values[i]));
  }

  v = boost::any(result);
}

Thanks,
Chris