unsigned basic_printf_context::parse_header()

in src/main/cpp/sdk/common/spdlog/fmt/bundled/printf.h [559:593]

• 30 lines of code
• 9 McCabe index (conditional complexity)

unsigned basic_printf_context<OutputIt, Char, AF>::parse_header(
  iterator &it, format_specs &spec) {
  unsigned arg_index = std::numeric_limits<unsigned>::max();
  char_type c = *it;
  if (c >= '0' && c <= '9') {
    // Parse an argument index (if followed by '$') or a width possibly
    // preceded with '0' flag(s).
    internal::error_handler eh;
    unsigned value = parse_nonnegative_int(it, eh);
    if (*it == '$') {  // value is an argument index
      ++it;
      arg_index = value;
    } else {
      if (c == '0')
        spec.fill_ = '0';
      if (value != 0) {
        // Nonzero value means that we parsed width and don't need to
        // parse it or flags again, so return now.
        spec.width_ = value;
        return arg_index;
      }
    }
  }
  parse_flags(spec, it);
  // Parse width.
  if (*it >= '0' && *it <= '9') {
    internal::error_handler eh;
    spec.width_ = parse_nonnegative_int(it, eh);
  } else if (*it == '*') {
    ++it;
    spec.width_ = visit_format_arg(
          internal::printf_width_handler<char_type>(spec), get_arg(it));
  }
  return arg_index;
}