2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
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8 * modification, are permitted provided that the following conditions
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34 #include <sys/types.h>
37 #define SECSPERDAY (24 * 60 * 60)
38 #define SECSPERHOUR (60 * 60)
39 #define SECSPERMINUTE (60)
40 #define MINSPERHOUR (60)
41 #define HOURSPERDAY (24)
42 #define FSECSPERDAY (24.0 * 60.0 * 60.0)
43 #define FSECSPERHOUR (60.0 * 60.0)
44 #define FSECSPERMINUTE (60.0)
45 #define FMINSPERHOUR (60.0)
46 #define FHOURSPERDAY (24.0)
48 #define DAYSPERYEAR 365
49 #define DAYSPERLEAPYEAR 366
51 /* Not yet categorized */
53 extern struct passwd *pw;
56 extern const char *calendarFile;
58 extern struct fixs neaster, npaskha, ncny, nfullmoon, nnewmoon;
59 extern struct fixs nmarequinox, nsepequinox, njunsolstice, ndecsolstice;
60 extern double UTCOffset;
61 extern int EastLongitude;
63 #define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
65 /* Flags to determine the returned values by determinestyle() in parsedata.c */
66 #define F_NONE 0x00000
67 #define F_MONTH 0x00001
68 #define F_DAYOFWEEK 0x00002
69 #define F_DAYOFMONTH 0x00004
70 #define F_MODIFIERINDEX 0x00008
71 #define F_MODIFIEROFFSET 0x00010
72 #define F_SPECIALDAY 0x00020
73 #define F_ALLMONTH 0x00040
74 #define F_ALLDAY 0x00080
75 #define F_VARIABLE 0x00100
76 #define F_EASTER 0x00200
78 #define F_PASKHA 0x00800
79 #define F_NEWMOON 0x01000
80 #define F_FULLMOON 0x02000
81 #define F_MAREQUINOX 0x04000
82 #define F_SEPEQUINOX 0x08000
83 #define F_JUNSOLSTICE 0x10000
84 #define F_DECSOLSTICE 0x20000
85 #define F_YEAR 0x40000
87 #define STRING_EASTER "Easter"
88 #define STRING_PASKHA "Paskha"
89 #define STRING_CNY "ChineseNewYear"
90 #define STRING_NEWMOON "NewMoon"
91 #define STRING_FULLMOON "FullMoon"
92 #define STRING_MAREQUINOX "MarEquinox"
93 #define STRING_SEPEQUINOX "SepEquinox"
94 #define STRING_JUNSOLSTICE "JunSolstice"
95 #define STRING_DECSOLSTICE "DecSolstice"
97 #define MAXCOUNT 125 /* Random number of maximum number of
98 * repeats of an event. Should be 52
99 * (number of weeks per year), if you
100 * want to show two years then it
101 * should be 104. If you are seeing
102 * more than this you are using this
107 * All the astronomical calculations are carried out for the meridian 120
108 * degrees east of Greenwich.
110 #define UTCOFFSET_CNY 8.0
112 extern int debug; /* show parsing of the input */
113 extern int year1, year2;
117 * Event sorting related functions:
118 * - Use event_add() to create a new event
119 * - Use event_continue() to add more text to the last added event
120 * - Use event_print_all() to display them in time chronological order
122 struct event *event_add(int, int, int, char *, int, char *, char *);
123 void event_continue(struct event *events, char *txt);
124 void event_print_all(FILE *fp);
143 extern const char *days[];
144 extern const char *fdays[];
145 extern const char *fmonths[];
146 extern const char *months[];
147 extern const char *sequences[];
148 extern struct fixs fndays[8]; /* full national days names */
149 extern struct fixs fnmonths[13]; /* full national months names */
150 extern struct fixs ndays[8]; /* short national days names */
151 extern struct fixs nmonths[13]; /* short national month names */
152 extern struct fixs nsequences[10];
154 void setnnames(void);
155 void setnsequences(char *);
158 extern const struct tm tm0;
159 extern char dayname[];
160 void settimes(time_t,int before, int after, int friday, struct tm *tp1, struct tm *tp2);
161 time_t Mktime(char *);
164 int parsedaymonth(char *, int *, int *, int *, int *, char **);
165 void dodebug(char *type);
169 void closecal(FILE *);
170 FILE *opencalin(void);
171 FILE *opencalout(void);
173 /* ostern.c / paskha.c */
179 extern int cumdaytab[][14];
180 extern int monthdaytab[][14];
181 extern int debug_remember;
182 void generatedates(struct tm *tp1, struct tm *tp2);
183 void dumpdates(void);
184 int remember_ymd(int y, int m, int d);
185 int remember_yd(int y, int d, int *rm, int *rd);
186 int first_dayofweek_of_year(int y);
187 int first_dayofweek_of_month(int y, int m);
188 int walkthrough_dates(struct event **e);
189 void addtodate(struct event *e, int year, int month, int day);
193 void pom(int year, double UTCoffset, int *fms, int *nms);
194 void fpom(int year, double utcoffset, double *ffms, double *fnms);
197 void equinoxsolstice(int year, double UTCoffset, int *equinoxdays, int *solsticedays);
198 void fequinoxsolstice(int year, double UTCoffset, double *equinoxdays, double *solsticedays);
199 int calculatesunlongitude30(int year, int degreeGMToffset, int *ichinesemonths);