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/********************************************************************\
* date.h -- utility functions to handle the date (adjusting, get *
* current date, etc.) for xacc (X-Accountant) *
* Copyright (C) 1997 Robin D. Clark *
* *
* 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 (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 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., 675 Mass Ave, Cambridge, MA 02139, USA. *
* *
* Author: Rob Clark *
* Internet: rclark@cs.hmc.edu *
* Address: 609 8th Street *
* Huntington Beach, CA 92648-4632 *
\********************************************************************/
/********************************************************************\
* adjustDay *
* increments/decrements the date structure by the indicated *
* number of days. The month and/or year is adjusted *
* appropriately, as needed. *
* *
* Args: date - the date structure to edit *
* adj - the number of days to change the date by. *
* Return: none *
\********************************************************************/
/********************************************************************\
* adjustMonth *
* adds adj to the current month of the year.. the resulting *
* month of the year is corrected to be in the range [1..12], *
* incrementing/decrementing the year if necessary. *
* *
* Args: date - the date structure to edit *
* adj - the number of months to change the date by. *
* Return: none *
\********************************************************************/
/********************************************************************\
* todaysDate *
* takes a (Date *) and fills it in with today's date *
* *
* Args: date - the struct to be filled in *
* Return: today's date *
\********************************************************************/
/********************************************************************\
* daysInMonth *
* returns the number of days in month. Leap years are handled *
* correctly, based on the value of the argument "year". *
* *
* Args: month - a number [0..11] indicating the month *
* year - a number (e.g. 1997) indicating the year *
\********************************************************************/
/********************************************************************\
* datecmp *
* compares date1 and date2 *
* *
* Note: for ordering transactions, don't use this routine. *
* You should probably use xaccTransOrder instead. Some *
* if the algorithms used by xacc depend on the superior ordering *
* that xaccTransOrder provides. *
* *
* Args: date1 - the first date to look at *
* date2 - the second date in the comparison *
* Return: < 0 if date1<date2, == 0 if date1==date2, > 0 otherwise *
\********************************************************************/
#ifndef __XACC_DATE_H__
#define __XACC_DATE_H__
#include "config.h"
typedef struct _date {
int year;
int month;
int day;
} Date;
/** PROTOTYPES ******************************************************/
void adjustDay( Date *date, int adj );
void adjustMonth( Date *date, int adj );
Date* todaysDate( Date *date );
/** daysInMonth includes "year" parameter in order to accommodate leap year
**/
int daysInMonth( int month , int year );
int datecmp( Date *date1, Date *date2 );
/** GLOBALS *********************************************************/
#endif /* __XACC_DATE_H__ */
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