swad-core/swad_date.h

196 lines
6.8 KiB
C

// swad_date.h: dates
#ifndef _SWAD_DAT
#define _SWAD_DAT
/*
SWAD (Shared Workspace At a Distance in Spanish),
is a web platform developed at the University of Granada (Spain),
and used to support university teaching.
This file is part of SWAD core.
Copyright (C) 1999-2019 Antonio Cañas Vargas
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*****************************************************************************/
/********************************* Headers ***********************************/
/*****************************************************************************/
#include <stdbool.h> // For boolean type
#include <stdio.h> // For FILE *
#include <time.h>
#include "swad_constant.h"
/*****************************************************************************/
/***************************** Public constants ******************************/
/*****************************************************************************/
#define Dat_SECONDS_IN_ONE_MONTH (30UL * 24UL * 60UL * 60UL)
#define Dat_MAX_BYTES_TIME_ZONE 256
#define Dat_MAX_BYTES_TIME (128 - 1)
/*****************************************************************************/
/******************************* Public types ********************************/
/*****************************************************************************/
#define Dat_LENGTH_YYYYMMDD (4 + 2 + 2)
struct Date
{
unsigned Day;
unsigned Month;
unsigned Year;
unsigned Week;
char YYYYMMDD[Dat_LENGTH_YYYYMMDD + 1];
};
struct Time
{
unsigned Hour;
unsigned Minute;
unsigned Second;
};
struct Hour
{
unsigned Hour;
unsigned Minute;
};
struct DateTime
{
struct Date Date;
struct Time Time;
char YYYYMMDDHHMMSS[4 + 2 + 2 + 2 + 2 + 2 + 1];
};
#define Dat_NUM_TIME_STATUS 3
typedef enum
{
Dat_PAST = 0,
Dat_PRESENT = 1,
Dat_FUTURE = 2,
} Dat_TimeStatus_t;
#define Dat_NUM_START_END_TIME 2
typedef enum
{
Dat_START_TIME = 0,
Dat_END_TIME = 1,
} Dat_StartEndTime_t;
#define Dat_NUM_FORM_SECONDS 2
typedef enum
{
Dat_FORM_SECONDS_OFF,
Dat_FORM_SECONDS_ON,
} Dat_FormSeconds;
typedef enum
{
Dat_HMS_DO_NOT_SET = 0,
Dat_HMS_TO_000000 = 1,
Dat_HMS_TO_235959 = 2,
} Dat_SetHMS;
/***** Date format *****/
#define Dat_NUM_OPTIONS_FORMAT 3
typedef enum
{
Dat_FORMAT_YYYY_MM_DD = 0, // ISO 8601, default
Dat_FORMAT_DD_MONTH_YYYY = 1,
Dat_FORMAT_MONTH_DD_YYYY = 2,
} Dat_Format_t; // Do not change these numbers because they are used in database
#define Dat_FORMAT_DEFAULT Dat_FORMAT_YYYY_MM_DD
/*****************************************************************************/
/***************************** Public prototypes *****************************/
/*****************************************************************************/
void Dat_PutBoxToSelectDateFormat (void);
void Dat_PutSpanDateFormat (Dat_Format_t Format);
void Dat_PutScriptDateFormat (Dat_Format_t Format);
void Dat_ChangeDateFormat (void);
Dat_Format_t Dat_GetDateFormatFromStr (const char *Str);
void Dat_GetStartExecutionTimeUTC (void);
void Dat_GetAndConvertCurrentDateTime (void);
time_t Dat_GetUNIXTimeFromStr (const char *Str);
bool Dat_GetDateFromYYYYMMDD (struct Date *Date,const char *YYYYMMDDString);
void Dat_ShowClientLocalTime (void);
struct tm *Dat_GetLocalTimeFromClock (const time_t *timep);
void Dat_ConvDateToDateStr (struct Date *Date,char StrDate[Cns_MAX_BYTES_DATE + 1]);
void Dat_PutFormStartEndClientLocalDateTimesWithYesterdayToday (bool SetHMS000000To235959);
void Dat_PutFormStartEndClientLocalDateTimes (time_t TimeUTC[2],
Dat_FormSeconds FormSeconds);
void Dat_WriteFormClientLocalDateTimeFromTimeUTC (const char *Id,
const char *ParamName,
time_t TimeUTC,
unsigned FirstYear,
unsigned LastYear,
Dat_FormSeconds FormSeconds,
Dat_SetHMS SetHMS,
bool SubmitFormOnChange);
time_t Dat_GetTimeUTCFromForm (const char *ParamName);
void Dat_PutHiddenParBrowserTZDiff (void);
void Dat_GetBrowserTimeZone (char BrowserTimeZone[Dat_MAX_BYTES_TIME_ZONE + 1]);
void Dat_WriteFormDate (unsigned FirstYear,unsigned LastYear,
const char *Id,
struct Date *DateSelected,
bool SubmitFormOnChange,bool Disabled);
void Dat_GetDateFromForm (const char *ParamNameDay,const char *ParamNameMonth,const char *ParamNameYear,
unsigned *Day,unsigned *Month,unsigned *Year);
void Dat_SetIniEndDates (void);
void Dat_WriteParamsIniEndDates (void);
void Dat_GetIniEndDatesFromForm (void);
void Dat_WriteRFC822DateFromTM (FILE *File,struct tm *tm);
void Dat_GetDateAfter (struct Date *Date,struct Date *SubsequentDate);
void Dat_GetDateBefore (struct Date *Date,struct Date *PrecedingDate );
void Dat_GetWeekBefore (struct Date *Date,struct Date *PrecedingDate );
void Dat_GetMonthBefore (struct Date *Date,struct Date *PrecedingDate );
void Dat_GetYearBefore (struct Date *Date,struct Date *PrecedingDate );
unsigned Dat_GetNumDaysBetweenDates (struct Date *DateIni,
struct Date *DateEnd);
unsigned Dat_GetNumWeeksBetweenDates (struct Date *DateIni,
struct Date *DateEnd);
unsigned Dat_GetNumMonthsBetweenDates (struct Date *DateIni,
struct Date *DateEnd);
unsigned Dat_GetNumYearsBetweenDates (struct Date *DateIni,
struct Date *DateEnd);
unsigned Dat_GetNumDaysInYear (unsigned Year);
unsigned Dat_GetNumDaysFebruary (unsigned Year);
bool Dat_GetIfLeapYear (unsigned Year);
unsigned Dat_GetNumWeeksInYear (unsigned Year);
unsigned Dat_GetDayOfWeek (unsigned Year,unsigned Month,unsigned Day);
unsigned Dat_GetDayOfYear (struct Date *Date);
void Dat_CalculateWeekOfYear (struct Date *Date);
void Dat_AssignDate (struct Date *DateDst,struct Date *DateSrc);
void Dat_WriteScriptMonths (void);
void Dat_WriteHoursMinutesSecondsFromSeconds (time_t Seconds);
#endif