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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2015 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#ifndef D_TIME_H
#define D_TIME_H
#include "common.h"
#include <stdint.h>
#include <string>
#include "a2time.h"
namespace aria2 {
class Time {
public:
using Clock = std::chrono::system_clock;
// The time value is initialized so that it represents the time at which
// this object was created.
Time();
Time(const Time& time) = default;
Time(Time&& time) = default;
Time(time_t sec);
Time& operator=(const Time& time) = default;
Time& operator=(Time&& time) = default;
bool operator<(const Time& time) const { return tp_ < time.tp_; }
bool operator>(const Time& time) const { return time < *this; }
bool operator<=(const Time& time) const { return !(time < *this); }
bool operator>=(const Time& time) const { return !(*this < time); }
// Makes this object's time value up to date.
void reset();
Clock::duration difference() const;
Clock::duration difference(const Time& now) const;
const Clock::time_point& getTime() const { return tp_; }
void setTimeFromEpoch(time_t sec);
time_t getTimeFromEpoch() const { return Clock::to_time_t(tp_); }
template <typename duration> void advance(const duration& t) { tp_ += t; }
bool good() const { return good_; }
bool bad() const { return !good_; }
static Time null() { return Time(0, false); }
std::string toHTTPDate() const;
// Currently timezone is assumed as GMT.
static Time parse(const std::string& datetime, const std::string& format);
// Currently timezone is assumed to GMT.
static Time parseRFC1123(const std::string& datetime);
// Like parseRFC1123, but only accepts trailing "+0000" instead of
// last 3 letters "GMT".
static Time parseRFC1123Alt(const std::string& datetime);
// Currently timezone is assumed to GMT.
static Time parseRFC850(const std::string& datetime);
// Currently timezone is assumed to GMT. Basically the format is
// RFC850, but year part is 4digit, eg 2008 This format appears in
// original Netscape's PERSISTENT CLIENT STATE HTTP COOKIES
// Specification. http://curl.haxx.se/rfc/cookie_spec.html
static Time parseRFC850Ext(const std::string& datetime);
// Currently timezone is assumed to GMT.
// ANSI C's asctime() format
static Time parseAsctime(const std::string& datetime);
// Try parseRFC1123, parseRFC850, parseAsctime, parseRFC850Ext in
// that order and returns the first "good" Time object returned by
// these functions.
static Time parseHTTPDate(const std::string& datetime);
private:
Time(time_t t, bool good) : tp_(Clock::from_time_t(t)), good_(good) {}
Clock::time_point tp_;
bool good_;
};
} // namespace aria2
#endif // D_TIME_H
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