TimePointOstream.hpp

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/*
 * ----------------- BEGIN LICENSE BLOCK ---------------------------------
 *
 * Copyright (C) 2018-2020 Intel Corporation
 *
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 * ----------------- END LICENSE BLOCK -----------------------------------
 */
 
#pragma once
 
#include <chrono>
#include <iomanip>
#include <iostream>
 
#if __cplusplus <= 201703L
 
namespace std {
namespace chrono {
 
inline std::ostream &operator<<(std::ostream &os, system_clock::time_point const &value)
{
  std::ios::fmtflags os_flags(os.flags());
  std::time_t t = std::chrono::system_clock::to_time_t(value);
  os << std::put_time(std::localtime(&t), "%d.%m.%Y-%H:%M:%S");
  os << "." << std::setfill('0') << std::setw(3)
     << (std::chrono::duration_cast<std::chrono::milliseconds>(value.time_since_epoch()).count() % 1000);
  os.flags(os_flags);
  return os;
}
 
} // namespace chrono
} // namespace std
 
#endif