1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 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 #ifdef WITH_ICONV 61 extern const char *outputEncoding; 62 #endif 63 64 #define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0) 65 66 /* Flags to determine the returned values by determinestyle() in parsedata.c */ 67 #define F_NONE 0x00000 68 #define F_MONTH 0x00001 69 #define F_DAYOFWEEK 0x00002 70 #define F_DAYOFMONTH 0x00004 71 #define F_MODIFIERINDEX 0x00008 72 #define F_MODIFIEROFFSET 0x00010 73 #define F_SPECIALDAY 0x00020 74 #define F_ALLMONTH 0x00040 75 #define F_ALLDAY 0x00080 76 #define F_VARIABLE 0x00100 77 #define F_EASTER 0x00200 78 #define F_CNY 0x00400 79 #define F_PASKHA 0x00800 80 #define F_NEWMOON 0x01000 81 #define F_FULLMOON 0x02000 82 #define F_MAREQUINOX 0x04000 83 #define F_SEPEQUINOX 0x08000 84 #define F_JUNSOLSTICE 0x10000 85 #define F_DECSOLSTICE 0x20000 86 #define F_YEAR 0x40000 87 88 #define STRING_EASTER "Easter" 89 #define STRING_PASKHA "Paskha" 90 #define STRING_CNY "ChineseNewYear" 91 #define STRING_NEWMOON "NewMoon" 92 #define STRING_FULLMOON "FullMoon" 93 #define STRING_MAREQUINOX "MarEquinox" 94 #define STRING_SEPEQUINOX "SepEquinox" 95 #define STRING_JUNSOLSTICE "JunSolstice" 96 #define STRING_DECSOLSTICE "DecSolstice" 97 98 #define MAXCOUNT 125 /* Random number of maximum number of 99 * repeats of an event. Should be 52 100 * (number of weeks per year), if you 101 * want to show two years then it 102 * should be 104. If you are seeing 103 * more than this you are using this 104 * program wrong. 105 */ 106 107 /* 108 * All the astronomical calculations are carried out for the meridian 120 109 * degrees east of Greenwich. 110 */ 111 #define UTCOFFSET_CNY 8.0 112 113 extern int debug; /* show parsing of the input */ 114 extern int year1, year2; 115 116 /* events.c */ 117 /* 118 * Event sorting related functions: 119 * - Use event_add() to create a new event 120 * - Use event_continue() to add more text to the last added event 121 * - Use event_print_all() to display them in time chronological order 122 */ 123 struct event *event_add(int, int, int, int, char *, char *); 124 void event_continue(struct event *events, char *txt); 125 void event_print_all(FILE *fp); 126 struct event { 127 int year; 128 int month; 129 int day; 130 int var; 131 char *text; 132 char *extra; 133 struct event *next; 134 }; 135 136 /* locale.c */ 137 138 struct fixs { 139 char *name; 140 size_t len; 141 }; 142 143 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]; 153 154 void setnnames(void); 155 void setnsequences(char *); 156 157 /* day.c */ 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 *); 162 163 /* parsedata.c */ 164 int parsedaymonth(char *, int *, int *, int *, int *, char **); 165 void dodebug(char *type); 166 167 /* io.c */ 168 void cal(void); 169 void closecal(FILE *); 170 FILE *opencalin(void); 171 FILE *opencalout(void); 172 173 /* ostern.c / paskha.c */ 174 int paskha(int); 175 int easter(int); 176 int j2g(int); 177 178 /* dates.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); 190 191 /* pom.c */ 192 #define MAXMOONS 18 193 void pom(int year, double UTCoffset, int *fms, int *nms); 194 void fpom(int year, double utcoffset, double *ffms, double *fnms); 195 196 /* sunpos.c */ 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); 200 201 #ifdef WITH_ICONV 202 void set_new_encoding(void); 203 #endif 204