Function StringToTime

libminifi/include/utils/ValueParser.h:161–217

template<typename Out>
bool StringToTime(const std::string& input, Out& output, core::TimeUnit& timeunit) {
  if (input.size() == 0) {
    return false;
  }

  const char* begin = input.c_str();
  char *end;
  errno = 0;
  auto ival = std::strtoll(begin, &end, 0);
  if (end == begin || errno == ERANGE) {
    return false;
  }

  if (end[0] == '\0') {
    return false;
  }

  while (*end == ' ') {
    // Skip the space
    end++;
  }

  std::string unit(end);
  std::transform(unit.begin(), unit.end(), unit.begin(), ::tolower);

  if (unit == "ns" || unit == "nano" || unit == "nanos" || unit == "nanoseconds") {
    timeunit = core::TimeUnit::NANOSECOND;
    output = ival;
    return true;
  } else if (unit == "us" || unit == "micro" || unit == "micros" || unit == "microseconds" || unit == "microsecond") {
    timeunit = core::TimeUnit::MICROSECOND;
    output = ival;
    return true;
  } else if (unit == "msec" || unit == "ms" || unit == "millisecond" || unit == "milliseconds" || unit == "msecs" || unit == "millis" || unit == "milli") {
    timeunit = core::TimeUnit::MILLISECOND;
    output = ival;
    return true;
  } else if (unit == "sec" || unit == "s" || unit == "second" || unit == "seconds" || unit == "secs") {
    timeunit = core::TimeUnit::SECOND;
    output = ival;
    return true;
  } else if (unit == "min" || unit == "m" || unit == "mins" || unit == "minute" || unit == "minutes") {
    timeunit = core::TimeUnit::MINUTE;
    output = ival;
    return true;
  } else if (unit == "h" || unit == "hr" || unit == "hour" || unit == "hrs" || unit == "hours") {
    timeunit = core::TimeUnit::HOUR;
    output = ival;
    return true;
  } else if (unit == "d" || unit == "day" || unit == "days") {
    timeunit = core::TimeUnit::DAY;
    output = ival;
    return true;
  } else {
    return false;
  }
}
} /* namespace internal */