Function parsePreviewNumbers

app/exiv2.cpp:1221–1253

}

int parsePreviewNumbers(Params::PreviewNumbers& previewNumbers, const std::string& optArg, int j) {
  size_t k = j;
  for (size_t i = j; i < optArg.size(); ++i) {
    std::ostringstream os;
    for (k = i; k < optArg.size() && isdigit(optArg[k]); ++k) {
      os << optArg[k];
    }
    if (k > i) {
      bool ok = false;
      auto num = Exiv2::stringTo<int>(os.str(), ok);
      if (ok && num >= 0) {
        previewNumbers.insert(num);
      } else {
        std::cerr << Params::instance().progname() << ": " << _("Invalid preview number") << ": " << num << "\n";
      }
      i = k;
    }
    if (k >= optArg.size() || optArg[i] != ',')
      break;
  }
  auto ret = static_cast<int>(k - j);
  if (ret == 0) {
    previewNumbers.insert(0);
  }
#ifdef DEBUG
  std::cout << "\nThe set now contains: ";
  for (auto&& number : previewNumbers) {
    std::cout << number << ", ";
  }
  std::cout << std::endl;
#endif
  return static_cast<int>(k - j);
}  // parsePreviewNumbers

bool parseCmdFiles(ModifyCmds& modifyCmds, const Params::CmdFiles& cmdFiles) {
  for (auto&& filename : cmdFiles) {