/usr.bin/calendar/calendar.h

  1/*-
  2 * Copyright (c) 1989, 1993, 1994
  3 *	The Regents of the University of California.  All rights reserved.
  4 *
  5 * Redistribution and use in source and binary forms, with or without
  6 * modification, are permitted provided that the following conditions
  7 * are met:
  8 * 1. Redistributions of source code must retain the above copyright
  9 *    notice, this list of conditions and the following disclaimer.
 10 * 2. Redistributions in binary form must reproduce the above copyright
 11 *    notice, this list of conditions and the following disclaimer in the
 12 *    documentation and/or other materials provided with the distribution.
 13 * 4. Neither the name of the University nor the names of its contributors
 14 *    may be used to endorse or promote products derived from this software
 15 *    without specific prior written permission.
 16 *
 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 27 * SUCH DAMAGE.
 28 *
 29 * $FreeBSD$
 30 */
 31
 32#include <sys/types.h>
 33#include <sys/uio.h>
 34
 35#define	SECSPERDAY	(24 * 60 * 60)
 36#define	SECSPERHOUR	(60 * 60)
 37#define	SECSPERMINUTE	(60)
 38#define	MINSPERHOUR	(60)
 39#define	HOURSPERDAY	(24)
 40#define	FSECSPERDAY	(24.0 * 60.0 * 60.0)
 41#define	FSECSPERHOUR	(60.0 * 60.0)
 42#define	FSECSPERMINUTE	(60.0)
 43#define	FMINSPERHOUR	(60.0)
 44#define	FHOURSPERDAY	(24.0)
 45
 46#define	DAYSPERYEAR	365
 47#define	DAYSPERLEAPYEAR	366
 48
 49/* Not yet categorized */
 50
 51extern struct passwd *pw;
 52extern int doall;
 53extern time_t t1, t2;
 54extern const char *calendarFile;
 55extern int yrdays;
 56extern struct fixs neaster, npaskha, ncny, nfullmoon, nnewmoon;
 57extern struct fixs nmarequinox, nsepequinox, njunsolstice, ndecsolstice;
 58extern double UTCOffset;
 59extern int EastLongitude;
 60
 61#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
 62
 63/* Flags to determine the returned values by determinestyle() in parsedata.c */
 64#define	F_NONE			0x00000
 65#define	F_MONTH			0x00001
 66#define	F_DAYOFWEEK		0x00002
 67#define	F_DAYOFMONTH		0x00004
 68#define	F_MODIFIERINDEX		0x00008
 69#define	F_MODIFIEROFFSET	0x00010
 70#define	F_SPECIALDAY		0x00020
 71#define	F_ALLMONTH		0x00040
 72#define	F_ALLDAY		0x00080
 73#define	F_VARIABLE		0x00100
 74#define	F_EASTER		0x00200
 75#define	F_CNY			0x00400
 76#define	F_PASKHA		0x00800
 77#define	F_NEWMOON		0x01000
 78#define	F_FULLMOON		0x02000
 79#define	F_MAREQUINOX		0x04000
 80#define	F_SEPEQUINOX		0x08000
 81#define	F_JUNSOLSTICE		0x10000
 82#define	F_DECSOLSTICE		0x20000
 83#define	F_YEAR			0x40000
 84
 85#define	STRING_EASTER		"Easter"
 86#define	STRING_PASKHA		"Paskha"
 87#define	STRING_CNY		"ChineseNewYear"
 88#define STRING_NEWMOON		"NewMoon"
 89#define STRING_FULLMOON		"FullMoon"
 90#define STRING_MAREQUINOX	"MarEquinox"
 91#define STRING_SEPEQUINOX	"SepEquinox"
 92#define STRING_JUNSOLSTICE	"JunSolstice"
 93#define STRING_DECSOLSTICE	"DecSolstice"
 94
 95#define	MAXCOUNT		125	/* Random number of maximum number of
 96					 * repeats of an event. Should be 52
 97					 * (number of weeks per year), if you
 98					 * want to show two years then it
 99					 * should be 104. If you are seeing
100					 * more than this you are using this
101					 * program wrong.
102					 */
103
104/* 
105 * All the astronomical calculations are carried out for the meridian 120
106 * degrees east of Greenwich.
107 */
108#define UTCOFFSET_CNY		8.0		
109
110extern int	debug;		/* show parsing of the input */
111extern int	year1, year2;
112
113/* events.c */
114/*
115 * Event sorting related functions:
116 * - Use event_add() to create a new event
117 * - Use event_continue() to add more text to the last added event
118 * - Use event_print_all() to display them in time chronological order
119 */
120struct event *event_add(int, int, int, char *, int, char *, char *);
121void	event_continue(struct event *events, char *txt);
122void	event_print_all(FILE *fp);
123struct event {
124	int	year;
125	int	month;
126	int	day;
127	int	var;
128	char	*date;
129	char	*text;
130	char	*extra;
131	struct event *next;
132};
133
134/* locale.c */
135
136struct fixs {
137	char	*name;
138	size_t	len;
139};
140
141extern const char *days[];
142extern const char *fdays[];
143extern const char *fmonths[];
144extern const char *months[];
145extern const char *sequences[];
146extern struct fixs fndays[8];		/* full national days names */
147extern struct fixs fnmonths[13];	/* full national months names */
148extern struct fixs ndays[8];		/* short national days names */
149extern struct fixs nmonths[13];		/* short national month names */
150extern struct fixs nsequences[10];
151
152void	setnnames(void);
153void	setnsequences(char *);
154
155/* day.c */
156extern const struct tm tm0;
157extern char dayname[];
158void	settimes(time_t,int before, int after, int friday, struct tm *tp1, struct tm *tp2);
159time_t	Mktime(char *);
160
161/* parsedata.c */
162int	parsedaymonth(char *, int *, int *, int *, int *, char **);
163void	dodebug(char *type);
164
165/* io.c */
166void	cal(void);
167void	closecal(FILE *);
168FILE	*opencal(void);
169
170/* ostern.c / paskha.c */
171int	paskha(int);
172int	easter(int);
173int	j2g(int);
174
175/* dates.c */
176extern int cumdaytab[][14];
177extern int mondaytab[][14];
178extern int debug_remember;
179void	generatedates(struct tm *tp1, struct tm *tp2);
180void	dumpdates(void);
181int	remember_ymd(int y, int m, int d);
182int	remember_yd(int y, int d, int *rm, int *rd);
183int	first_dayofweek_of_year(int y);
184int	first_dayofweek_of_month(int y, int m);
185int	walkthrough_dates(struct event **e);
186void	addtodate(struct event *e, int year, int month, int day);
187
188/* pom.c */
189#define	MAXMOONS	18
190void	pom(int year, double UTCoffset, int *fms, int *nms);
191void	fpom(int year, double utcoffset, double *ffms, double *fnms);
192
193/* sunpos.c */
194void	equinoxsolstice(int year, double UTCoffset, int *equinoxdays, int *solsticedays);
195void	fequinoxsolstice(int year, double UTCoffset, double *equinoxdays, double *solsticedays);
196int	calculatesunlongitude30(int year, int degreeGMToffset, int *ichinesemonths);