5079590438

Committed 25 May 2023 12:28PM UTC coverage: 92.228% (+0.5%) from 91.723%

Build # 5079590438

Build Type

Pull #3502

github

Pull Request Pull Request #3502: Apply clang-format to the codebase

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97.44

/src/lib/utils/calendar.cpp

/*
* Calendar Functions
* (C) 1999-2010,2017 Jack Lloyd
* (C) 2015 Simon Warta (Kullo GmbH)
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include <botan/internal/calendar.h>

#include <botan/exceptn.h>
#include <ctime>
#include <iomanip>
#include <sstream>

namespace Botan {

namespace {

std::tm do_gmtime(std::time_t time_val) {
   std::tm tm;

#if defined(BOTAN_TARGET_OS_HAS_WIN32)
   ::gmtime_s(&tm, &time_val);  // Windows
#elif defined(BOTAN_TARGET_OS_HAS_POSIX1)
   ::gmtime_r(&time_val, &tm);  // Unix/SUSv2
#else
   std::tm* tm_p = std::gmtime(&time_val);
   if(tm_p == nullptr)
      throw Encoding_Error("time_t_to_tm could not convert");
   tm = *tm_p;
#endif

   return tm;
}

/*
Portable replacement for timegm, _mkgmtime, etc

Algorithm due to Howard Hinnant

See https://howardhinnant.github.io/date_algorithms.html#days_from_civil
for details and explaination. The code is slightly simplified by our assumption
that the date is at least 1970, which is sufficient for our purposes.
*/
size_t days_since_epoch(uint32_t year, uint32_t month, uint32_t day) {
   if(month <= 2)
      year -= 1;
   const uint32_t era = year / 400;
   const uint32_t yoe = year - era * 400;                                          // [0, 399]
   const uint32_t doy = (153 * (month + (month > 2 ? -3 : 9)) + 2) / 5 + day - 1;  // [0, 365]
   const uint32_t doe = yoe * 365 + yoe / 4 - yoe / 100 + doy;                     // [0, 146096]
   return era * 146097 + doe - 719468;
}

}

std::chrono::system_clock::time_point calendar_point::to_std_timepoint() const {
   if(year() < 1970)
      throw Invalid_Argument("calendar_point::to_std_timepoint() does not support years before 1970");

   // 32 bit time_t ends at January 19, 2038
   // https://msdn.microsoft.com/en-us/library/2093ets1.aspx
   // Throw after 2037 if 32 bit time_t is used

   if constexpr(sizeof(std::time_t) == 4) {
      if(year() > 2037) {
         throw Invalid_Argument("calendar_point::to_std_timepoint() does not support years after 2037 on this system");
      }
   }

   // This upper bound is completely arbitrary
   if(year() >= 2400) {
      throw Invalid_Argument("calendar_point::to_std_timepoint() does not support years after 2400");
   }

   const uint64_t seconds_64 =
      (days_since_epoch(year(), month(), day()) * 86400) + (hour() * 60 * 60) + (minutes() * 60) + seconds();

   const time_t seconds_time_t = static_cast<time_t>(seconds_64);

   if(seconds_64 - seconds_time_t != 0) {
      throw Invalid_Argument("calendar_point::to_std_timepoint time_t overflow");
   }

   return std::chrono::system_clock::from_time_t(seconds_time_t);
}

std::string calendar_point::to_string() const {
   // desired format: <YYYY>-<MM>-<dd>T<HH>:<mm>:<ss>
   std::stringstream output;
   output << std::setfill('0') << std::setw(4) << year() << "-" << std::setw(2) << month() << "-" << std::setw(2)
          << day() << "T" << std::setw(2) << hour() << ":" << std::setw(2) << minutes() << ":" << std::setw(2)
          << seconds();
   return output.str();
}

calendar_point::calendar_point(const std::chrono::system_clock::time_point& time_point) {
   std::tm tm = do_gmtime(std::chrono::system_clock::to_time_t(time_point));

   m_year = tm.tm_year + 1900;
   m_month = tm.tm_mon + 1;
   m_day = tm.tm_mday;
   m_hour = tm.tm_hour;
   m_minutes = tm.tm_min;
   m_seconds = tm.tm_sec;
}

}

1	/*
2	* Calendar Functions
3	* (C) 1999-2010,2017 Jack Lloyd
4	* (C) 2015 Simon Warta (Kullo GmbH)
5	*
6	* Botan is released under the Simplified BSD License (see license.txt)
7	*/
8
9	#include <botan/internal/calendar.h>
10
11	#include <botan/exceptn.h>
12	#include <ctime>
13	#include <iomanip>
14	#include <sstream>
15
16	namespace Botan {
17
18	namespace {
19
20	std::tm do_gmtime(std::time_t time_val) {	3,981✔
21	std::tm tm;	3,981✔
22
23	#if defined(BOTAN_TARGET_OS_HAS_WIN32)
24	::gmtime_s(&tm, &time_val); // Windows
25	#elif defined(BOTAN_TARGET_OS_HAS_POSIX1)
26	::gmtime_r(&time_val, &tm); // Unix/SUSv2	3,981✔
27	#else
28	std::tm* tm_p = std::gmtime(&time_val);
29	if(tm_p == nullptr)
30	throw Encoding_Error("time_t_to_tm could not convert");
31	tm = *tm_p;
32	#endif
33
34	return tm;	3,981✔
35	}
36
37	/*
38	Portable replacement for timegm, _mkgmtime, etc
39
40	Algorithm due to Howard Hinnant
41
42	See https://howardhinnant.github.io/date_algorithms.html#days_from_civil
43	for details and explaination. The code is slightly simplified by our assumption
44	that the date is at least 1970, which is sufficient for our purposes.
45	*/
46	size_t days_since_epoch(uint32_t year, uint32_t month, uint32_t day) {	484✔
47	if(month <= 2)	484✔
48	year -= 1;	373✔
49	const uint32_t era = year / 400;	484✔
50	const uint32_t yoe = year - era * 400; // [0, 399]	484✔
51	const uint32_t doy = (153 * (month + (month > 2 ? -3 : 9)) + 2) / 5 + day - 1; // [0, 365]	484✔
52	const uint32_t doe = yoe * 365 + yoe / 4 - yoe / 100 + doy; // [0, 146096]	484✔
53	return era * 146097 + doe - 719468;	484✔
54	}
55
56	}
57
58	std::chrono::system_clock::time_point calendar_point::to_std_timepoint() const {	487✔
59	if(year() < 1970)	487✔
60	throw Invalid_Argument("calendar_point::to_std_timepoint() does not support years before 1970");	3✔
61
62	// 32 bit time_t ends at January 19, 2038
63	// https://msdn.microsoft.com/en-us/library/2093ets1.aspx
64	// Throw after 2037 if 32 bit time_t is used
65
66	if constexpr(sizeof(std::time_t) == 4) {	484✔
67	if(year() > 2037) {
68	throw Invalid_Argument("calendar_point::to_std_timepoint() does not support years after 2037 on this system");
69	}
70	}
71
72	// This upper bound is completely arbitrary
73	if(year() >= 2400) {	484✔
74	throw Invalid_Argument("calendar_point::to_std_timepoint() does not support years after 2400");	×
75	}
76
77	const uint64_t seconds_64 =	484✔
78	(days_since_epoch(year(), month(), day()) * 86400) + (hour() * 60 * 60) + (minutes() * 60) + seconds();	484✔
79
80	const time_t seconds_time_t = static_cast<time_t>(seconds_64);	484✔
81
82	if(seconds_64 - seconds_time_t != 0) {	484✔
83	throw Invalid_Argument("calendar_point::to_std_timepoint time_t overflow");
84	}
85
86	return std::chrono::system_clock::from_time_t(seconds_time_t);	484✔
87	}
88
89	std::string calendar_point::to_string() const {	10✔
90	// desired format: <YYYY>-<MM>-<dd>T<HH>:<mm>:<ss>
91	std::stringstream output;	10✔
92	output << std::setfill('0') << std::setw(4) << year() << "-" << std::setw(2) << month() << "-" << std::setw(2)	10✔
93	<< day() << "T" << std::setw(2) << hour() << ":" << std::setw(2) << minutes() << ":" << std::setw(2)	10✔
94	<< seconds();	10✔
95	return output.str();	20✔
96	}	10✔
97
98	calendar_point::calendar_point(const std::chrono::system_clock::time_point& time_point) {	3,981✔
99	std::tm tm = do_gmtime(std::chrono::system_clock::to_time_t(time_point));	3,981✔
100
101	m_year = tm.tm_year + 1900;	3,981✔
102	m_month = tm.tm_mon + 1;	3,981✔
103	m_day = tm.tm_mday;	3,981✔
104	m_hour = tm.tm_hour;	3,981✔
105	m_minutes = tm.tm_min;	3,981✔
106	m_seconds = tm.tm_sec;	3,981✔
107	}	3,981✔
108
109	}

randombit / botan / 5079590438

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