1 /* 2 * $Id: wce_time.h,v 1.2 2006/04/09 16:48:18 mloskot Exp $ 3 * 4 * time.h and sys/time.h - time types and functions 5 * 6 * Created by Mateusz Loskot (mateusz@loskot.net) 7 * 8 * Copyright (c) 2006 Taxus SI Ltd. 9 * 10 * Permission is hereby granted, free of charge, to any person obtaining 11 * a copy of this software and associated documentation files (the "Software"), 12 * to deal in the Software without restriction, including without limitation 13 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 14 * and/or sell copies of the Software, and to permit persons to whom 15 * the Software is furnished to do so, subject to the following conditions: 16 * 17 * The above copyright notice and this permission notice shall be included 18 * in all copies or substantial portions of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 23 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 24 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 25 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH 26 * THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 27 * 28 * MIT License: 29 * http://opensource.org/licenses/mit-license.php 30 * 31 * Contact: 32 * Taxus SI Ltd. 33 * http://www.taxussi.com.pl 34 * 35 */ 36 #ifndef WCEEX_TIME_H 37 #define WCEEX_TIME_H 1 38 39 #if !defined(_WIN32_WCE) 40 # error "Only Winddows CE target is supported!" 41 #endif 42 43 #ifdef __cplusplus 44 extern "C" { 45 #endif /* __cplusplus */ 46 47 /******************************************************************************* 48 Types and macros definition 49 *******************************************************************************/ 50 51 #ifndef _TIME_T_DEFINED 52 typedef long time_t; /* time value as number of seconds of the Epoch */ 53 #define _TIME_T_DEFINED 54 #endif /* _TIME_T_DEFINED */ 55 56 #ifndef _TM_DEFINED 57 struct tm 58 { 59 int tm_sec; /* seconds after the minute - [0,59] */ 60 int tm_min; /* minutes after the hour - [0,59] */ 61 int tm_hour; /* hours since midnight - [0,23] */ 62 int tm_mday; /* day of the month - [1,31] */ 63 int tm_mon; /* months since January - [0,11] */ 64 int tm_year; /* years since 1900 */ 65 int tm_wday; /* days since Sunday - [0,6] */ 66 int tm_yday; /* days since January 1 - [0,365] */ 67 int tm_isdst; /* daylight savings time flag */ 68 }; 69 #define _TM_DEFINED 70 #endif /* _TM_DEFINED */ 71 72 #ifndef _TIMEZONE_DEFINED 73 struct timezone 74 { 75 int tz_minuteswest; /* minutes W of Greenwich */ 76 int tz_dsttime; /* type of dst correction */ 77 }; 78 #define _TIMEZONE_DEFINED 79 #endif /* _TIMEZONE_DEFINED */ 80 81 /* 82 * Constants used internally by time functions. 83 */ 84 85 #if defined(_MSC_VER) || defined(__BORLANDC__) 86 #define EPOCHFILETIME (116444736000000000i64) 87 #else 88 #define EPOCHFILETIME (116444736000000000LL) 89 #endif 90 91 /* Epoch base year */ 92 #define EPOCH_YEAR 1970 93 94 /* tm struct members conversion units */ 95 #define TM_YEAR_BASE 1900 /* tm_year base year */ 96 #define TM_MONTH_MIN 0 /* tm_mon = 0 - January */ 97 #define TM_MONTH_MAX 11 /* tm_mon = 11 - December */ 98 99 #define MIN_SEC 60 /* seconds in a minute */ 100 #define HOUR_SEC 3600 /* seconds in an hour */ 101 #define DAY_SEC 86400 /* seconds in a day */ 102 #define YEAR_SEC (365 * DAY_SEC) /* seconds in a year */ 103 #define FOUR_YEAR_SEC (4 * YEAR_SEC + 1) /* seconds in a 4-year period */ 104 105 /* 106 In every, 400 year period (greg) is an interval of the same 107 number of days: 365 x 400 + 97 = 146097 108 Also, there are 97 leap days in every such 400 years interval 109 */ 110 #define LEAP_DAYS_IN_GREG 97 111 #define GREG_YEARS 400 112 #define GREG_DAYS (365 * GREG_YEARS + LEAP_DAYS_IN_GREG) 113 #define GREG_SECS (GREG_DAYS * DAY_SEC) 114 115 /* Checks if given year is a leap year. */ 116 #define IS_LEAP_YEAR(year) \ 117 (((year) % 4) == 0 && (((year) % 100) != 0 || ((year) % 400) == 0)) 118 119 /******************************************************************************* 120 time.h functions 121 *******************************************************************************/ 122 123 time_t wceex_time(time_t *timer); 124 time_t wceex_mktime(struct tm *tmbuff); 125 time_t wceex_gmmktime(struct tm *tmbuff); 126 127 struct tm * wceex_localtime(const time_t *timer); 128 struct tm * wceex_gmtime(const time_t *timer); 129 130 char * wceex_ctime(const time_t *timer); 131 char * wceex_ctime_r(const time_t *timer, char *buf); 132 133 char * wceex_asctime(const struct tm *tmbuff); 134 char * wceex_asctime_r(const struct tm *tbuff, char *buff); 135 136 /******************************************************************************* 137 sys/time.h functions 138 *******************************************************************************/ 139 140 int wceex_gettimeofday(struct timeval *tp, struct timezone *tzp); 141 142 /******************************************************************************* 143 Internal functions prototypes. 144 *******************************************************************************/ 145 146 /* Internal function to get time value from tm struc. */ 147 extern time_t __wceex_mktime_utc(struct tm *tmbuff); 148 149 150 151 #ifdef __cplusplus 152 } 153 #endif /* __cplusplus */ 154 155 #endif /* #ifndef WCEEX_TIME_H */ 156 157