1 /* <!-- copyright */ 2 /* 3 * aria2 - The high speed download utility 4 * 5 * Copyright (C) 2015 Tatsuhiro Tsujikawa 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 * 21 * In addition, as a special exception, the copyright holders give 22 * permission to link the code of portions of this program with the 23 * OpenSSL library under certain conditions as described in each 24 * individual source file, and distribute linked combinations 25 * including the two. 26 * You must obey the GNU General Public License in all respects 27 * for all of the code used other than OpenSSL. If you modify 28 * file(s) with this exception, you may extend this exception to your 29 * version of the file(s), but you are not obligated to do so. If you 30 * do not wish to do so, delete this exception statement from your 31 * version. If you delete this exception statement from all source 32 * files in the program, then also delete it here. 33 */ 34 /* copyright --> */ 35 #ifndef D_TIME_H 36 #define D_TIME_H 37 38 #include "common.h" 39 40 #include <stdint.h> 41 42 #include <string> 43 44 #include "a2time.h" 45 46 namespace aria2 { 47 48 class Time { 49 public: 50 using Clock = std::chrono::system_clock; 51 52 // The time value is initialized so that it represents the time at which 53 // this object was created. 54 Time(); 55 Time(const Time& time) = default; 56 Time(Time&& time) = default; 57 Time(time_t sec); 58 59 Time& operator=(const Time& time) = default; 60 Time& operator=(Time&& time) = default; 61 62 bool operator<(const Time& time) const { return tp_ < time.tp_; } 63 bool operator>(const Time& time) const { return time < *this; } 64 bool operator<=(const Time& time) const { return !(time < *this); } 65 bool operator>=(const Time& time) const { return !(*this < time); } 66 67 // Makes this object's time value up to date. 68 void reset(); 69 70 Clock::duration difference() const; 71 Clock::duration difference(const Time& now) const; 72 getTime()73 const Clock::time_point& getTime() const { return tp_; } 74 75 void setTimeFromEpoch(time_t sec); getTimeFromEpoch()76 time_t getTimeFromEpoch() const { return Clock::to_time_t(tp_); } 77 advance(const duration & t)78 template <typename duration> void advance(const duration& t) { tp_ += t; } 79 good()80 bool good() const { return good_; } bad()81 bool bad() const { return !good_; } 82 null()83 static Time null() { return Time(0, false); } 84 85 std::string toHTTPDate() const; 86 87 // Currently timezone is assumed as GMT. 88 static Time parse(const std::string& datetime, const std::string& format); 89 90 // Currently timezone is assumed to GMT. 91 static Time parseRFC1123(const std::string& datetime); 92 93 // Like parseRFC1123, but only accepts trailing "+0000" instead of 94 // last 3 letters "GMT". 95 static Time parseRFC1123Alt(const std::string& datetime); 96 97 // Currently timezone is assumed to GMT. 98 static Time parseRFC850(const std::string& datetime); 99 100 // Currently timezone is assumed to GMT. Basically the format is 101 // RFC850, but year part is 4digit, eg 2008 This format appears in 102 // original Netscape's PERSISTENT CLIENT STATE HTTP COOKIES 103 // Specification. http://curl.haxx.se/rfc/cookie_spec.html 104 static Time parseRFC850Ext(const std::string& datetime); 105 106 // Currently timezone is assumed to GMT. 107 // ANSI C's asctime() format 108 static Time parseAsctime(const std::string& datetime); 109 110 // Try parseRFC1123, parseRFC850, parseAsctime, parseRFC850Ext in 111 // that order and returns the first "good" Time object returned by 112 // these functions. 113 static Time parseHTTPDate(const std::string& datetime); 114 115 private: Time(time_t t,bool good)116 Time(time_t t, bool good) : tp_(Clock::from_time_t(t)), good_(good) {} 117 118 Clock::time_point tp_; 119 bool good_; 120 }; 121 122 } // namespace aria2 123 124 #endif // D_TIME_H 125