parser_iostream.hh

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#pragma once
 
#include <cstdlib>
#include <ostream>
 
#include "cli/parser.hh"
 
namespace cli {

template <ArgumentSpec T>
// NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays, modernize-avoid-c-arrays)
auto parse_or_exit(int argc, char* argv[], std::ostream& out, std::ostream& err)
    -> T {
  auto result = parse<T>(argc, argv);
  if (!result) {
    if (const auto message = result.error.message(); !message.empty()) {
      auto& stream = result.error.use_stdout() ? out : err;
      stream << message << '\n';
    }
    std::exit(result.error.exit_code());
  }
  return std::move(result.value);
}
 
}  // namespace cli