mirror of
https://github.com/Gnucash/gnucash.git
synced 2024-11-26 19:00:18 -06:00
b2fcfbd3c6
Addendum to 8b8c957ed -- if budgeted amounts exclude closing entries,
actual amounts should also exclude closing entries.
Amend documentation, modify budget test to add a closing entry which
will be ignored.
189 lines
7.0 KiB
C
189 lines
7.0 KiB
C
/* Recurrence.h:
|
|
*
|
|
* A Recurrence represents the periodic occurrence of dates, with a
|
|
* beginning point. For example, "Every Friday, beginning April 15,
|
|
* 2005" or "The 1st of every 3rd month, beginning April 1, 2001."
|
|
*
|
|
* Technically, a Recurrence can also represent certain useful
|
|
* "almost periodic" date sequences. For example, "The last day of
|
|
* every month, beginning Feb. 28, 2005."
|
|
*
|
|
* The main operation you can perform on a Recurrence is to find the
|
|
* earliest date in the sequence of occurrences that is after some
|
|
* specified date (often the "previous" occurrence).
|
|
*
|
|
* In addition, you can use a GList of Recurrences to represent a
|
|
* sequence containing all the dates in each Recurrence in the list,
|
|
* and perform the same "next instance" computation for this
|
|
* sequence.
|
|
*
|
|
* Copyright (C) 2005, Chris Shoemaker <c.shoemaker@cox.net>
|
|
*
|
|
* 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, contact:
|
|
*
|
|
* Free Software Foundation Voice: +1-617-542-5942
|
|
* 51 Franklin Street, Fifth Floor Fax: +1-617-542-2652
|
|
* Boston, MA 02110-1301, USA gnu@gnu.org
|
|
*/
|
|
|
|
#ifndef RECURRENCE_H
|
|
#define RECURRENCE_H
|
|
|
|
#include <glib.h>
|
|
#include "Account.h"
|
|
#include "gnc-numeric.h"
|
|
|
|
typedef enum
|
|
{
|
|
PERIOD_ONCE, /* Not a true period at all, but convenient here. */
|
|
PERIOD_DAY,
|
|
PERIOD_WEEK,
|
|
PERIOD_MONTH,
|
|
PERIOD_END_OF_MONTH, /* This is actually a period plus a phase. */
|
|
PERIOD_NTH_WEEKDAY, /* Also a phase, e.g. Second Tueday. */
|
|
PERIOD_LAST_WEEKDAY, /* Also a phase. */
|
|
PERIOD_YEAR,
|
|
NUM_PERIOD_TYPES,
|
|
PERIOD_INVALID = -1,
|
|
} PeriodType;
|
|
|
|
typedef enum
|
|
{
|
|
WEEKEND_ADJ_NONE,
|
|
WEEKEND_ADJ_BACK, /* Previous weekday */
|
|
WEEKEND_ADJ_FORWARD, /* Next weekday */
|
|
NUM_WEEKEND_ADJS,
|
|
WEEKEND_ADJ_INVALID = -1,
|
|
} WeekendAdjust;
|
|
|
|
/* Recurrences represent both the phase and period of a recurring event. */
|
|
|
|
typedef struct
|
|
{
|
|
GDate start; /* First date in the recurrence; specifies phase. */
|
|
PeriodType ptype; /* see PeriodType enum */
|
|
guint16 mult; /* a period multiplier */
|
|
WeekendAdjust wadj; /* see WeekendAdjust enum */
|
|
} Recurrence;
|
|
|
|
|
|
/* recurrenceSet() will enforce internal consistency by overriding
|
|
inconsistent inputs so that 'r' will _always_ end up being a valid
|
|
recurrence.
|
|
|
|
- if the period type is invalid, PERIOD_MONTH is used.
|
|
|
|
- if the period type is PERIOD_ONCE, then mult is ignored,
|
|
otherwise, if mult is zero, then mult of 1 is used.
|
|
|
|
- if the date is invalid, the current date is used.
|
|
|
|
- if the period type specifies phase, the date is made to agree
|
|
with that phase:
|
|
|
|
- for PERIOD_END_OF_MONTH, the last day of date's month is used.
|
|
|
|
- for PERIOD_NTH_WEEKDAY, a fifth weekday converts to a
|
|
PERIOD_LAST_WEEKDAY
|
|
|
|
- for PERIOD_LAST_WEEKDAY, the last day in date's month with
|
|
date's day-of-week is used.
|
|
|
|
*/
|
|
void recurrenceSet(Recurrence *r, guint16 mult, PeriodType pt,
|
|
const GDate *date, WeekendAdjust wadj);
|
|
|
|
/* get the fields */
|
|
PeriodType recurrenceGetPeriodType(const Recurrence *r);
|
|
guint recurrenceGetMultiplier(const Recurrence *r);
|
|
GDate recurrenceGetDate(const Recurrence *r);
|
|
time64 recurrenceGetTime(const Recurrence *r);
|
|
WeekendAdjust recurrenceGetWeekendAdjust(const Recurrence *r);
|
|
|
|
/* Get the occurrence immediately after refDate.
|
|
*
|
|
* This function has strict and precise post-conditions:
|
|
*
|
|
* Given a valid recurrence and a valid 'refDate', 'nextDate' will be
|
|
* *IN*valid IFF the period_type is PERIOD_ONCE, and 'refDate' is
|
|
* later-than or equal to the single occurrence (start_date).
|
|
*
|
|
* A valid 'nextDate' will _always_ be:
|
|
* - strictly later than the 'refDate', AND
|
|
* - later than or equal to the start date of the recurrence, AND
|
|
* - exactly an integral number of periods away from the start date
|
|
*
|
|
* Furthermore, there will be no date _earlier_ than 'nextDate' for
|
|
* which the three things above are true.
|
|
*
|
|
*/
|
|
void recurrenceNextInstance(const Recurrence *r, const GDate *refDate,
|
|
GDate *nextDate);
|
|
|
|
/* Zero-based. n == 1 gets the instance after the start date. */
|
|
void recurrenceNthInstance(const Recurrence *r, guint n, GDate *date);
|
|
|
|
/* Get a time corresponding to the beginning (or end if 'end' is true)
|
|
of the nth instance of the recurrence. Also zero-based. */
|
|
time64 recurrenceGetPeriodTime(const Recurrence *r, guint n, gboolean end);
|
|
|
|
/**
|
|
* @return the amount that an Account's value changed between the beginning
|
|
* and end of the nth instance of the Recurrence. Please note this function
|
|
* is only used in budget reports and will exclude closing entries.
|
|
**/
|
|
gnc_numeric recurrenceGetAccountPeriodValue(const Recurrence *r,
|
|
Account *acct, guint n);
|
|
|
|
/** @return the earliest of the next occurrences -- a "composite" recurrence **/
|
|
void recurrenceListNextInstance(const GList *r, const GDate *refDate,
|
|
GDate *nextDate);
|
|
|
|
/* These four functions are only for xml storage, not user presentation. */
|
|
gchar *recurrencePeriodTypeToString(PeriodType pt);
|
|
PeriodType recurrencePeriodTypeFromString(const gchar *str);
|
|
gchar *recurrenceWeekendAdjustToString(WeekendAdjust wadj);
|
|
WeekendAdjust recurrenceWeekendAdjustFromString(const gchar *str);
|
|
|
|
/* For debugging. Caller owns the returned string. Not intl. */
|
|
gchar *recurrenceToString(const Recurrence *r);
|
|
gchar *recurrenceListToString(const GList *rlist);
|
|
|
|
/** @return True if the recurrence list is a common "semi-monthly" recurrence. **/
|
|
gboolean recurrenceListIsSemiMonthly(GList *recurrences);
|
|
/** @return True if the recurrence list is a common "weekly" recurrence. **/
|
|
gboolean recurrenceListIsWeeklyMultiple(const GList *recurrences);
|
|
|
|
/**
|
|
* Pretty-print an intentionally-short summary of the period of a (GList of)
|
|
* Recurrences, as might be commonly-created by the GncFrequency widget. In
|
|
* particular, this routine expects most lists to contain a single
|
|
* Recurrence, but also anticipates 2 "composite" scenarios:
|
|
*
|
|
* @li A list of N PERIOD_WEEK Recurrences.
|
|
* @li A list of 2 PERIOD_MONTH or PERIOD_LAST_WEEKDAY Recurrences,
|
|
* representing a Semi-Monthly period.
|
|
*
|
|
* @return A caller-owned string.
|
|
**/
|
|
gchar *recurrenceListToCompactString(GList *recurrence_list);
|
|
|
|
/** @return integer representing the relationship between @a a and @a b, with the semantics of qsort. **/
|
|
int recurrenceCmp(Recurrence *a, Recurrence *b);
|
|
int recurrenceListCmp(GList *a, GList *b);
|
|
|
|
void recurrenceListFree(GList **recurrence);
|
|
|
|
#endif /* RECURRENCE_H */
|