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 * 3. 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 51 extern struct passwd *pw; 52 extern int doall; 53 extern time_t t1, t2; 54 extern const char *calendarFile; 55 extern int yrdays; 56 extern struct fixs neaster, npaskha, ncny, nfullmoon, nnewmoon; 57 extern struct fixs nmarequinox, nsepequinox, njunsolstice, ndecsolstice; 58 extern double UTCOffset; 59 extern 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 8.0 109 110 extern int debug; /* show parsing of the input */ 111 extern 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 */ 120 struct event *event_add(int, int, int, char *, int, char *, char *); 121 void event_continue(struct event *events, char *txt); 122 void event_print_all(FILE *fp); 123 struct 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 */ 135 136 struct fixs { 137 char *name; 138 size_t len; 139 }; 140 141 extern const char *days[]; 142 extern const char *fdays[]; 143 extern const char *fmonths[]; 144 extern const char *months[]; 145 extern const char *sequences[]; 146 extern struct fixs fndays[8]; /* full national days names */ 147 extern struct fixs fnmonths[13]; /* full national months names */ 148 extern struct fixs ndays[8]; /* short national days names */ 149 extern struct fixs nmonths[13]; /* short national month names */ 150 extern struct fixs nsequences[10]; 151 152 void setnnames(void); 153 void setnsequences(char *); 154 155 /* day.c */ 156 extern const struct tm tm0; 157 extern char dayname[]; 158 void settimes(time_t,int before, int after, int friday, struct tm *tp1, struct tm *tp2); 159 time_t Mktime(char *); 160 161 /* parsedata.c */ 162 int parsedaymonth(char *, int *, int *, int *, int *, char **); 163 void dodebug(char *type); 164 165 /* io.c */ 166 void cal(void); 167 void closecal(FILE *); 168 FILE *opencalin(void); 169 FILE *opencalout(void); 170 171 /* ostern.c / paskha.c */ 172 int paskha(int); 173 int easter(int); 174 int j2g(int); 175 176 /* dates.c */ 177 extern int cumdaytab[][14]; 178 extern int monthdaytab[][14]; 179 extern int debug_remember; 180 void generatedates(struct tm *tp1, struct tm *tp2); 181 void dumpdates(void); 182 int remember_ymd(int y, int m, int d); 183 int remember_yd(int y, int d, int *rm, int *rd); 184 int first_dayofweek_of_year(int y); 185 int first_dayofweek_of_month(int y, int m); 186 int walkthrough_dates(struct event **e); 187 void addtodate(struct event *e, int year, int month, int day); 188 189 /* pom.c */ 190 #define MAXMOONS 18 191 void pom(int year, double UTCoffset, int *fms, int *nms); 192 void fpom(int year, double utcoffset, double *ffms, double *fnms); 193 194 /* sunpos.c */ 195 void equinoxsolstice(int year, double UTCoffset, int *equinoxdays, int *solsticedays); 196 void fequinoxsolstice(int year, double UTCoffset, double *equinoxdays, double *solsticedays); 197 int calculatesunlongitude30(int year, int degreeGMToffset, int *ichinesemonths); 198