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1 : : /*
2 : : * This file is part of the MicroPython project, http://micropython.org/
3 : : *
4 : : * The MIT License (MIT)
5 : : *
6 : : * Copyright (c) 2013, 2014 Damien P. George
7 : : * Copyright (c) 2015 Daniel Campora
8 : : *
9 : : * Permission is hereby granted, free of charge, to any person obtaining a copy
10 : : * of this software and associated documentation files (the "Software"), to deal
11 : : * in the Software without restriction, including without limitation the rights
12 : : * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 : : * copies of the Software, and to permit persons to whom the Software is
14 : : * furnished to do so, subject to the following conditions:
15 : : *
16 : : * The above copyright notice and this permission notice shall be included in
17 : : * all copies or substantial portions of the Software.
18 : : *
19 : : * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 : : * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 : : * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 : : * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 : : * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 : : * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 : : * THE SOFTWARE.
26 : : */
27 : : #ifndef MICROPY_INCLUDED_LIB_TIMEUTILS_TIMEUTILS_H
28 : : #define MICROPY_INCLUDED_LIB_TIMEUTILS_TIMEUTILS_H
29 : :
30 : : // The number of seconds between 1970/1/1 and 2000/1/1 is calculated using:
31 : : // time.mktime((2000,1,1,0,0,0,0,0,0)) - time.mktime((1970,1,1,0,0,0,0,0,0))
32 : : #define TIMEUTILS_SECONDS_1970_TO_2000 (946684800ULL)
33 : :
34 : : typedef struct _timeutils_struct_time_t {
35 : : uint16_t tm_year; // i.e. 2014
36 : : uint8_t tm_mon; // 1..12
37 : : uint8_t tm_mday; // 1..31
38 : : uint8_t tm_hour; // 0..23
39 : : uint8_t tm_min; // 0..59
40 : : uint8_t tm_sec; // 0..59
41 : : uint8_t tm_wday; // 0..6 0 = Monday
42 : : uint16_t tm_yday; // 1..366
43 : : } timeutils_struct_time_t;
44 : :
45 : : bool timeutils_is_leap_year(mp_uint_t year);
46 : : mp_uint_t timeutils_days_in_month(mp_uint_t year, mp_uint_t month);
47 : : mp_uint_t timeutils_year_day(mp_uint_t year, mp_uint_t month, mp_uint_t date);
48 : :
49 : : void timeutils_seconds_since_2000_to_struct_time(mp_uint_t t,
50 : : timeutils_struct_time_t *tm);
51 : :
52 : : // Year is absolute, month/date are 1-based, hour/minute/second are 0-based.
53 : : mp_uint_t timeutils_seconds_since_2000(mp_uint_t year, mp_uint_t month,
54 : : mp_uint_t date, mp_uint_t hour, mp_uint_t minute, mp_uint_t second);
55 : :
56 : : // Year is absolute, month/mday are 1-based, hours/minutes/seconds are 0-based.
57 : : mp_uint_t timeutils_mktime_2000(mp_uint_t year, mp_int_t month, mp_int_t mday,
58 : : mp_int_t hours, mp_int_t minutes, mp_int_t seconds);
59 : :
60 : : // Select the Epoch used by the port.
61 : : #if MICROPY_EPOCH_IS_1970
62 : :
63 : : static inline void timeutils_seconds_since_epoch_to_struct_time(uint64_t t, timeutils_struct_time_t *tm) {
64 : : // TODO this will give incorrect results for dates before 2000/1/1
65 : : timeutils_seconds_since_2000_to_struct_time(t - TIMEUTILS_SECONDS_1970_TO_2000, tm);
66 : : }
67 : :
68 : : // Year is absolute, month/mday are 1-based, hours/minutes/seconds are 0-based.
69 : : static inline uint64_t timeutils_mktime(mp_uint_t year, mp_int_t month, mp_int_t mday, mp_int_t hours, mp_int_t minutes, mp_int_t seconds) {
70 : : return timeutils_mktime_2000(year, month, mday, hours, minutes, seconds) + TIMEUTILS_SECONDS_1970_TO_2000;
71 : : }
72 : :
73 : : // Year is absolute, month/date are 1-based, hour/minute/second are 0-based.
74 : 14 : static inline uint64_t timeutils_seconds_since_epoch(mp_uint_t year, mp_uint_t month,
75 : : mp_uint_t date, mp_uint_t hour, mp_uint_t minute, mp_uint_t second) {
76 : : // TODO this will give incorrect results for dates before 2000/1/1
77 : 14 : return timeutils_seconds_since_2000(year, month, date, hour, minute, second) + TIMEUTILS_SECONDS_1970_TO_2000;
78 : : }
79 : :
80 : 24 : static inline mp_uint_t timeutils_seconds_since_epoch_from_nanoseconds_since_1970(uint64_t ns) {
81 : 24 : return ns / 1000000000ULL;
82 : : }
83 : :
84 : : static inline uint64_t timeutils_nanoseconds_since_epoch_to_nanoseconds_since_1970(uint64_t ns) {
85 : : return ns;
86 : : }
87 : :
88 : : #else // Epoch is 2000
89 : :
90 : : #define timeutils_seconds_since_epoch_to_struct_time timeutils_seconds_since_2000_to_struct_time
91 : : #define timeutils_seconds_since_epoch timeutils_seconds_since_2000
92 : : #define timeutils_mktime timeutils_mktime_2000
93 : :
94 : : static inline uint64_t timeutils_seconds_since_epoch_to_nanoseconds_since_1970(mp_uint_t s) {
95 : : return ((uint64_t)s + TIMEUTILS_SECONDS_1970_TO_2000) * 1000000000ULL;
96 : : }
97 : :
98 : : static inline mp_uint_t timeutils_seconds_since_epoch_from_nanoseconds_since_1970(uint64_t ns) {
99 : : return ns / 1000000000ULL - TIMEUTILS_SECONDS_1970_TO_2000;
100 : : }
101 : :
102 : : static inline int64_t timeutils_nanoseconds_since_epoch_to_nanoseconds_since_1970(int64_t ns) {
103 : : return ns + TIMEUTILS_SECONDS_1970_TO_2000 * 1000000000ULL;
104 : : }
105 : :
106 : : #endif
107 : :
108 : : int timeutils_calc_weekday(int y, int m, int d);
109 : :
110 : : #endif // MICROPY_INCLUDED_LIB_TIMEUTILS_TIMEUTILS_H
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