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/**
* @file thdate.h
* Date class.
*/
/* Copyright (C) 2000 Stacho Mudrak
*
* $Date: $
* $RCSfile: $
* $Revision: $
*
* --------------------------------------------------------------------
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* --------------------------------------------------------------------
*/
#include <time.h>
#include <array>
#ifndef thdate_h
#define thdate_h
#define thdate_bufflen 255
/**
* Convert date into decimal year.
*/
double thdate_d2y(int year, int month, int day, int hour, int min, double sec);
/**
* Convert decimal year into date.
*/
void thdate_y2d(double dy, int & year, int & month, int & day, int & hour, int & min, double & sec);
/**
* Date formats.
*/
enum {
TT_DATE_FMT_ISO,
TT_DATE_FMT_LOCALE,
TT_DATE_FMT_LOCALE_LONG,
TT_DATE_FMT_Y,
TT_DATE_FMT_UTF8_ISO,
TT_DATE_FMT_UTF8_Y,
TT_DATE_FMT_SQL_SINGLE,
TT_DATE_FMT_THERION,
};
/**
* Date class.
*
* Date is in fact a time interval.
*/
class thdate {
public:
int syear = -1, ///< Start date year
smonth = -1, ///< Start date month
sday = -1, ///< Start date day
shour = -1, ///< Star date hour
smin = -1, ///< Star date minute
eyear = -1, ///< End date year
emonth = -1, ///< End date month
eday = -1, ///< End date month
ehour = -1, ///< End date hour
emin = -1; ///< End date minute
double ssec = -1.0, ///< Start date seconds
esec = -1.0; ///< End date seconds
std::array<char, thdate_bufflen> dstr = {}; ///< String for given date.
friend bool operator < (const thdate &, const thdate &); ///< Less operator.
friend bool operator <= (const thdate &, const thdate &); ///< Less operator.
friend bool operator > (const thdate &, const thdate &); ///< Greater operator.
friend bool operator >= (const thdate &, const thdate &); ///< Greater operator.
friend bool operator == (const thdate &, const thdate &); ///< Equal operator.
friend bool operator != (const thdate &, const thdate &); ///< Not equal operator.
/**
* Compare two dates if first is less than second, item by item.
*/
static bool is_less(int y1, int m1, int d1, int h1, int n1, double s1,
int y2, int m2, int d2, int h2, int n2, double s2);
/**
* Compare two dates if first is greater than second, item by item.
*/
static bool is_greater(int y1, int m1, int d1, int h1, int n1, double s1,
int y2, int m2, int d2, int h2, int n2, double s2);
/**
* Create string representation of date.
*/
void print_str(int fmt);
/**
* Reset the date.
*/
void reset();
void reset_current();
/**
* Standard constructor.
*/
thdate() = default;
/**
* Standard destructor.
*/
~thdate();
/**
* Parse string to date.
*/
void parse(const char * src);
/**
* Return true, if date is a time interval.
*/
bool is_interval();
/**
* Return true, if date is a defined.
*/
bool is_defined();
/**
* Join two dates together.
*/
void join(thdate & dt);
/**
* Return string representation of date.
*/
char * get_str(int fmt = TT_DATE_FMT_ISO);
/**
* Return start year as double value.
*/
double get_start_year();
/**
* Return end year as double value.
*/
double get_end_year();
/**
* Return end average as double value.
*/
double get_average_year();
/**
* Set date years.
*/
void set_years(double sy, double ey);
/**
* Get the start or end date as time_t format
*/
time_t get_start_t_time();
time_t get_end_t_time();
/**
* Get the start or end date as number of days since 1 Jan 1900 for Survex export
*/
int get_start_days1900();
int get_end_days1900();
};
#endif
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