1/*
2 * Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020, Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 *    conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 *    of conditions and the following disclaimer in the documentation and/or other materials
13 *    provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 *    to endorse or promote products derived from this software without specific prior written
17 *    permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef __LINUX_TZDST_H__
33#define __LINUX_TZDST_H__
34
35#include "time.h"
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40
41#ifdef __LITEOS__
42
43#define SECSPERMIN  60
44#define MINSPERHOUR 60
45#define HOURSPERDAY 24
46#define DAYSPERWEEK 7
47#define DAYSPERNYEAR    365
48#define DAYSPERLYEAR    366
49#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
50#define SECSPERDAY  ((int_fast32_t) SECSPERHOUR * HOURSPERDAY)
51#define MONSPERYEAR 12
52
53#define TM_YEAR_BASE    1900
54
55#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
56
57/**
58 * @ingroup localtime
59 * @brief Set Time Zone.
60 *
61 * @par Description:
62 * This API is used to set the time zone.
63 *
64 * @attention
65 * <ul>
66 * <li>When setting time zones, format is required to be "tzn[+/-]hh[:mm[:ss]][dzn]" .</li>
67 * </ul>
68 *
69 * @param buff The string point to the time zone going to be setting.
70 *
71 * @retval   None
72 */
73void settimezone(const char *);
74
75/**
76 * @ingroup localtime
77 * @brief Disable daylight saving time.
78 *
79 * @par Description:
80 * This API is used to make daylight saving time useless.
81 *
82 * @param None.
83 *
84 * @retval   None
85 */
86int dst_disable(void);
87
88/**
89 * @ingroup localtime
90 * @brief Enable daylight saving time..
91 *
92 * @par Description:
93 * This API is used to configure daylight saving time.
94 *
95 * @attention
96 * <ul>
97 * <li>When config dst, The configuration format has strict requirements.</li>
98 * <li>The first configuration format for example "Feb-03 03:00:00"</li>
99 * <li>The second configuration format for example "Oct-1st-Fri 03:00:00"</li>
100 * <li>The abbreviations for the months are "Jan",  "Feb", "Mar",  "Apr", "May", "Jun", "Jul", "Aug",
101 * "Sep", "Oct", "Nov", and "Dec".</li>
102 * <li>The abbreviations for the days of the week are "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", and "Sat".</li>
103 * <li>The abbreviations for the weeks of the month are "1st", "2nd", "3rd", "4th", "5th"</li>
104 * <li>When it's only four weekdays this month, the effect of "5th" is the same as "Last"</li>
105 * </ul>
106 *
107 * @param dstStartTime   The string point to the DST start going to be setting.
108 * @param dstEndTime     The string point to the DST end going to be setting.
109 * @param forwardSeconds Indicates the number of seconds that time is allocated when entering DST interval.
110 *
111 * @retval   0 Succeed.
112 * @retval  -1 Failed.
113 */
114int dst_enable(const char *dstStartTime, const char *dstEndTime, int forwardSeconds);
115
116/**
117 * @ingroup localtime
118 * @brief Inquire daylight saving time.
119 *
120 * @par Description:
121 * This API is used to inquire daylight saving time.
122 *
123 * @param year      Represents the year to query start from 1900.
124 * @param dstStart  Used to store daylight savings time start time
125 * @param dstEnd    Used to store daylight savings time end time
126 *
127 * @retval   0 Succeed.
128 * @retval  -1 Failed.
129 */
130int dst_inquire(int year, struct tm *dstStart, struct tm *dstEnd);
131
132#endif /* __LITEOS__ */
133#ifdef __cplusplus
134}
135#endif
136
137#endif /* __LINUX_TZDST_H__ */