1 /*- 2 * Copyright (c) 1992-2009 Edwin Groothuis <edwin@FreeBSD.org>. 3 * 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <ctype.h> 32 #include <math.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <string.h> 36 #include <err.h> 37 38 #include "calendar.h" 39 40 static char *showflags(int flags); 41 static int isonlydigits(char *s, int nostar); 42 static const char *getmonthname(int i); 43 static int checkmonth(char *s, size_t *len, size_t *offset, const char **month); 44 static const char *getdayofweekname(int i); 45 static int checkdayofweek(char *s, size_t *len, size_t *offset, const char **dow); 46 static int indextooffset(char *s); 47 static int parseoffset(char *s); 48 static char *floattoday(int year, double f); 49 static char *floattotime(double f); 50 51 /* 52 * Expected styles: 53 * 54 * Date ::= Month . ' ' . DayOfMonth | 55 * Month . ' ' . DayOfWeek . ModifierIndex | 56 * Month . '/' . DayOfMonth | 57 * Month . '/' . DayOfWeek . ModifierIndex | 58 * DayOfMonth . ' ' . Month | 59 * DayOfMonth . '/' . Month | 60 * DayOfWeek . ModifierIndex . ' ' .Month | 61 * DayOfWeek . ModifierIndex . '/' .Month | 62 * DayOfWeek . ModifierIndex | 63 * SpecialDay . ModifierOffset 64 * 65 * Month ::= MonthName | MonthNumber | '*' 66 * MonthNumber ::= '0' ... '9' | '00' ... '09' | '10' ... '12' 67 * MonthName ::= MonthNameShort | MonthNameLong 68 * MonthNameLong ::= 'January' ... 'December' 69 * MonthNameShort ::= 'Jan' ... 'Dec' | 'Jan.' ... 'Dec.' 70 * 71 * DayOfWeek ::= DayOfWeekShort | DayOfWeekLong 72 * DayOfWeekShort ::= 'Mon' .. 'Sun' 73 * DayOfWeekLong ::= 'Monday' .. 'Sunday' 74 * DayOfMonth ::= '0' ... '9' | '00' ... '09' | '10' ... '29' | 75 * '30' ... '31' | '*' 76 * 77 * ModifierOffset ::= '' | '+' . ModifierNumber | '-' . ModifierNumber 78 * ModifierNumber ::= '0' ... '9' | '00' ... '99' | '000' ... '299' | 79 * '300' ... '359' | '360' ... '365' 80 * ModifierIndex ::= 'Second' | 'Third' | 'Fourth' | 'Fifth' | 81 * 'First' | 'Last' 82 * 83 * SpecialDay ::= 'Easter' | 'Paskha' | 'ChineseNewYear' 84 * 85 */ 86 static int 87 determinestyle(char *date, int *flags, 88 char *month, int *imonth, char *dayofmonth, int *idayofmonth, 89 char *dayofweek, int *idayofweek, char *modifieroffset, 90 char *modifierindex, char *specialday, char *year, int *iyear) 91 { 92 char *p, *p1, *p2, *py; 93 const char *dow, *pmonth; 94 char pold; 95 size_t len, offset; 96 97 *flags = F_NONE; 98 *month = '\0'; 99 *imonth = 0; 100 *year = '\0'; 101 *iyear = 0; 102 *dayofmonth = '\0'; 103 *idayofmonth = 0; 104 *dayofweek = '\0'; 105 *idayofweek = 0; 106 *modifieroffset = '\0'; 107 *modifierindex = '\0'; 108 *specialday = '\0'; 109 110 #define CHECKSPECIAL(s1, s2, lens2, type) \ 111 if (s2 != NULL && strncmp(s1, s2, lens2) == 0) { \ 112 *flags |= F_SPECIALDAY; \ 113 *flags |= type; \ 114 *flags |= F_VARIABLE; \ 115 if (strlen(s1) == lens2) { \ 116 strcpy(specialday, s1); \ 117 return (1); \ 118 } \ 119 strncpy(specialday, s1, lens2); \ 120 specialday[lens2] = '\0'; \ 121 strcpy(modifieroffset, s1 + lens2); \ 122 *flags |= F_MODIFIEROFFSET; \ 123 return (1); \ 124 } 125 126 if ((p = strchr(date, ' ')) == NULL) { 127 if ((p = strchr(date, '/')) == NULL) { 128 CHECKSPECIAL(date, STRING_CNY, strlen(STRING_CNY), 129 F_CNY); 130 CHECKSPECIAL(date, ncny.name, ncny.len, F_CNY); 131 CHECKSPECIAL(date, STRING_NEWMOON, 132 strlen(STRING_NEWMOON), F_NEWMOON); 133 CHECKSPECIAL(date, nnewmoon.name, nnewmoon.len, 134 F_NEWMOON); 135 CHECKSPECIAL(date, STRING_FULLMOON, 136 strlen(STRING_FULLMOON), F_FULLMOON); 137 CHECKSPECIAL(date, nfullmoon.name, nfullmoon.len, 138 F_FULLMOON); 139 CHECKSPECIAL(date, STRING_PASKHA, 140 strlen(STRING_PASKHA), F_PASKHA); 141 CHECKSPECIAL(date, npaskha.name, npaskha.len, F_PASKHA); 142 CHECKSPECIAL(date, STRING_EASTER, 143 strlen(STRING_EASTER), F_EASTER); 144 CHECKSPECIAL(date, neaster.name, neaster.len, F_EASTER); 145 CHECKSPECIAL(date, STRING_MAREQUINOX, 146 strlen(STRING_MAREQUINOX), F_MAREQUINOX); 147 CHECKSPECIAL(date, nmarequinox.name, nmarequinox.len, 148 F_SEPEQUINOX); 149 CHECKSPECIAL(date, STRING_SEPEQUINOX, 150 strlen(STRING_SEPEQUINOX), F_SEPEQUINOX); 151 CHECKSPECIAL(date, nsepequinox.name, nsepequinox.len, 152 F_SEPEQUINOX); 153 CHECKSPECIAL(date, STRING_JUNSOLSTICE, 154 strlen(STRING_JUNSOLSTICE), F_JUNSOLSTICE); 155 CHECKSPECIAL(date, njunsolstice.name, njunsolstice.len, 156 F_JUNSOLSTICE); 157 CHECKSPECIAL(date, STRING_DECSOLSTICE, 158 strlen(STRING_DECSOLSTICE), F_DECSOLSTICE); 159 CHECKSPECIAL(date, ndecsolstice.name, ndecsolstice.len, 160 F_DECSOLSTICE); 161 if (checkdayofweek(date, &len, &offset, &dow) != 0) { 162 *flags |= F_DAYOFWEEK; 163 *flags |= F_VARIABLE; 164 *idayofweek = offset; 165 if (strlen(date) == len) { 166 strcpy(dayofweek, date); 167 return (1); 168 } 169 strncpy(dayofweek, date, len); 170 dayofweek[len] = '\0'; 171 strcpy(modifierindex, date + len); 172 *flags |= F_MODIFIERINDEX; 173 return (1); 174 } 175 if (isonlydigits(date, 1)) { 176 /* Assume month number only */ 177 *flags |= F_MONTH; 178 *imonth = (int)strtol(date, (char **)NULL, 10); 179 strcpy(month, getmonthname(*imonth)); 180 return(1); 181 } 182 return (0); 183 } 184 } 185 186 /* 187 * AFTER this, leave by goto-ing to "allfine" or "fail" to restore the 188 * original data in `date'. 189 */ 190 pold = *p; 191 *p = 0; 192 p1 = date; 193 p2 = p + 1; 194 /* Now p2 points to the next field and p1 to the first field */ 195 196 if ((py = strchr(p2, '/')) != NULL) { 197 /* We have a year in the string. Now this is getting tricky */ 198 strcpy(year, p1); 199 *iyear = (int)strtol(year, NULL, 10); 200 p1 = p2; 201 p2 = py + 1; 202 *py = 0; 203 *flags |= F_YEAR; 204 } 205 206 /* 207 printf("p1: %s\n", p1); 208 printf("p2: %s\n", p2); 209 printf("year: %s\n", year); 210 */ 211 212 /* Check if there is a month-string in the date */ 213 if ((checkmonth(p1, &len, &offset, &pmonth) != 0) 214 || (checkmonth(p2, &len, &offset, &pmonth) != 0 && (p2 = p1))) { 215 /* p2 is the non-month part */ 216 *flags |= F_MONTH; 217 *imonth = offset; 218 219 strcpy(month, getmonthname(offset)); 220 if (isonlydigits(p2, 1)) { 221 strcpy(dayofmonth, p2); 222 *idayofmonth = (int)strtol(p2, (char **)NULL, 10); 223 *flags |= F_DAYOFMONTH; 224 goto allfine; 225 } 226 if (strcmp(p2, "*") == 0) { 227 *flags |= F_ALLDAY; 228 goto allfine; 229 } 230 231 if (checkdayofweek(p2, &len, &offset, &dow) != 0) { 232 *flags |= F_DAYOFWEEK; 233 *flags |= F_VARIABLE; 234 *idayofweek = offset; 235 strcpy(dayofweek, getdayofweekname(offset)); 236 if (strlen(p2) == len) 237 goto allfine; 238 strcpy(modifierindex, p2 + len); 239 *flags |= F_MODIFIERINDEX; 240 goto allfine; 241 } 242 243 goto fail; 244 } 245 246 /* Check if there is an every-day or every-month in the string */ 247 if ((strcmp(p1, "*") == 0 && isonlydigits(p2, 1)) 248 || (strcmp(p2, "*") == 0 && isonlydigits(p1, 1) && (p2 = p1))) { 249 int d; 250 251 *flags |= F_ALLMONTH; 252 *flags |= F_DAYOFMONTH; 253 d = (int)strtol(p2, (char **)NULL, 10); 254 *idayofmonth = d; 255 sprintf(dayofmonth, "%d", d); 256 goto allfine; 257 } 258 259 /* Month as a number, then a weekday */ 260 if (isonlydigits(p1, 1) 261 && checkdayofweek(p2, &len, &offset, &dow) != 0) { 262 int d; 263 264 *flags |= F_MONTH; 265 *flags |= F_DAYOFWEEK; 266 *flags |= F_VARIABLE; 267 268 *idayofweek = offset; 269 d = (int)strtol(p1, (char **)NULL, 10); 270 *imonth = d; 271 strcpy(month, getmonthname(d)); 272 273 strcpy(dayofweek, getdayofweekname(offset)); 274 if (strlen(p2) == len) 275 goto allfine; 276 strcpy(modifierindex, p2 + len); 277 *flags |= F_MODIFIERINDEX; 278 goto allfine; 279 } 280 281 /* If both the month and date are specified as numbers */ 282 if (isonlydigits(p1, 1) && isonlydigits(p2, 0)) { 283 /* Now who wants to be this ambigious? :-( */ 284 int m, d; 285 286 if (strchr(p2, '*') != NULL) 287 *flags |= F_VARIABLE; 288 289 m = (int)strtol(p1, (char **)NULL, 10); 290 d = (int)strtol(p2, (char **)NULL, 10); 291 292 *flags |= F_MONTH; 293 *flags |= F_DAYOFMONTH; 294 295 if (m > 12) { 296 *imonth = d; 297 *idayofmonth = m; 298 strcpy(month, getmonthname(d)); 299 sprintf(dayofmonth, "%d", m); 300 } else { 301 *imonth = m; 302 *idayofmonth = d; 303 strcpy(month, getmonthname(m)); 304 sprintf(dayofmonth, "%d", d); 305 } 306 goto allfine; 307 } 308 309 /* FALLTHROUGH */ 310 fail: 311 *p = pold; 312 return (0); 313 allfine: 314 *p = pold; 315 return (1); 316 317 } 318 319 static void 320 remember(int *rememberindex, int *y, int *m, int *d, char **ed, int yy, int mm, 321 int dd, char *extra) 322 { 323 static int warned = 0; 324 325 if (*rememberindex >= MAXCOUNT - 1) { 326 if (warned == 0) 327 warnx("Index > %d, ignored", MAXCOUNT); 328 warned++; 329 return; 330 } 331 y[*rememberindex] = yy; 332 m[*rememberindex] = mm; 333 d[*rememberindex] = dd; 334 if (extra != NULL) 335 strcpy(ed[*rememberindex], extra); 336 else 337 ed[*rememberindex][0] = '\0'; 338 *rememberindex += 1; 339 } 340 341 static void 342 debug_determinestyle(int dateonly, char *date, int flags, char *month, 343 int imonth, char *dayofmonth, int idayofmonth, char *dayofweek, 344 int idayofweek, char *modifieroffset, char *modifierindex, char *specialday, 345 char *year, int iyear) 346 { 347 348 if (dateonly != 0) { 349 printf("-------\ndate: |%s|\n", date); 350 if (dateonly == 1) 351 return; 352 } 353 printf("flags: %x - %s\n", flags, showflags(flags)); 354 if (modifieroffset[0] != '\0') 355 printf("modifieroffset: |%s|\n", modifieroffset); 356 if (modifierindex[0] != '\0') 357 printf("modifierindex: |%s|\n", modifierindex); 358 if (year[0] != '\0') 359 printf("year: |%s| (%d)\n", year, iyear); 360 if (month[0] != '\0') 361 printf("month: |%s| (%d)\n", month, imonth); 362 if (dayofmonth[0] != '\0') 363 printf("dayofmonth: |%s| (%d)\n", dayofmonth, idayofmonth); 364 if (dayofweek[0] != '\0') 365 printf("dayofweek: |%s| (%d)\n", dayofweek, idayofweek); 366 if (specialday[0] != '\0') 367 printf("specialday: |%s|\n", specialday); 368 } 369 370 struct yearinfo { 371 int year; 372 int ieaster, ipaskha, firstcnyday; 373 double ffullmoon[MAXMOONS], fnewmoon[MAXMOONS]; 374 double ffullmooncny[MAXMOONS], fnewmooncny[MAXMOONS]; 375 int ichinesemonths[MAXMOONS]; 376 double equinoxdays[2], solsticedays[2]; 377 int *mondays; 378 struct yearinfo *next; 379 }; 380 /* 381 * Possible date formats include any combination of: 382 * 3-charmonth (January, Jan, Jan) 383 * 3-charweekday (Friday, Monday, mon.) 384 * numeric month or day (1, 2, 04) 385 * 386 * Any character may separate them, or they may not be separated. Any line, 387 * following a line that is matched, that starts with "whitespace", is shown 388 * along with the matched line. 389 */ 390 int 391 parsedaymonth(char *date, int *yearp, int *monthp, int *dayp, int *flags, 392 char **edp) 393 { 394 char month[100], dayofmonth[100], dayofweek[100], modifieroffset[100]; 395 char syear[100]; 396 char modifierindex[100], specialday[100]; 397 int idayofweek = -1, imonth = -1, idayofmonth = -1, iyear = -1; 398 int year, remindex; 399 int d, m, dow, rm, rd, offset; 400 char *ed; 401 int retvalsign = 1; 402 403 static struct yearinfo *years, *yearinfo; 404 405 /* 406 * CONVENTION 407 * 408 * Month: 1-12 409 * Monthname: Jan .. Dec 410 * Day: 1-31 411 * Weekday: Mon .. Sun 412 * 413 */ 414 415 *flags = 0; 416 417 if (debug) 418 debug_determinestyle(1, date, *flags, month, imonth, 419 dayofmonth, idayofmonth, dayofweek, idayofweek, 420 modifieroffset, modifierindex, specialday, syear, iyear); 421 if (determinestyle(date, flags, month, &imonth, dayofmonth, 422 &idayofmonth, dayofweek, &idayofweek, modifieroffset, 423 modifierindex, specialday, syear, &iyear) == 0) { 424 if (debug) 425 printf("Failed!\n"); 426 return (0); 427 } 428 429 if (debug) 430 debug_determinestyle(0, date, *flags, month, imonth, 431 dayofmonth, idayofmonth, dayofweek, idayofweek, 432 modifieroffset, modifierindex, specialday, syear, iyear); 433 434 remindex = 0; 435 for (year = year1; year <= year2; year++) { 436 437 int lflags = *flags; 438 /* If the year is specified, only do it if it is this year! */ 439 if ((lflags & F_YEAR) != 0) 440 if (iyear != year) 441 continue; 442 lflags &= ~F_YEAR; 443 444 /* Get important dates for this year */ 445 yearinfo = years; 446 while (yearinfo != NULL) { 447 if (yearinfo->year == year) 448 break; 449 yearinfo = yearinfo -> next; 450 } 451 if (yearinfo == NULL) { 452 yearinfo = (struct yearinfo *)calloc(1, 453 sizeof(struct yearinfo)); 454 if (yearinfo == NULL) 455 errx(1, "Unable to allocate more years"); 456 yearinfo->year = year; 457 yearinfo->next = years; 458 years = yearinfo; 459 460 yearinfo->mondays = mondaytab[isleap(year)]; 461 yearinfo->ieaster = easter(year); 462 yearinfo->ipaskha = paskha(year); 463 fpom(year, UTCOffset, yearinfo->ffullmoon, 464 yearinfo->fnewmoon); 465 fpom(year, UTCOFFSET_CNY, yearinfo->ffullmooncny, 466 yearinfo->fnewmooncny); 467 fequinoxsolstice(year, UTCOffset, 468 yearinfo->equinoxdays, yearinfo->solsticedays); 469 470 /* 471 * CNY: Match day with sun longitude at 330` with new 472 * moon 473 */ 474 yearinfo->firstcnyday = calculatesunlongitude30(year, 475 UTCOFFSET_CNY, yearinfo->ichinesemonths); 476 for (m = 0; yearinfo->fnewmooncny[m] >= 0; m++) { 477 if (yearinfo->fnewmooncny[m] > 478 yearinfo->firstcnyday) { 479 yearinfo->firstcnyday = 480 floor(yearinfo->fnewmooncny[m - 1]); 481 break; 482 } 483 } 484 } 485 486 /* Same day every year */ 487 if (lflags == (F_MONTH | F_DAYOFMONTH)) { 488 if (!remember_ymd(year, imonth, idayofmonth)) 489 continue; 490 remember(&remindex, yearp, monthp, dayp, edp, 491 year, imonth, idayofmonth, NULL); 492 continue; 493 } 494 495 /* XXX Same day every year, but variable */ 496 if (lflags == (F_MONTH | F_DAYOFMONTH | F_VARIABLE)) { 497 if (!remember_ymd(year, imonth, idayofmonth)) 498 continue; 499 remember(&remindex, yearp, monthp, dayp, edp, 500 year, imonth, idayofmonth, NULL); 501 continue; 502 } 503 504 /* Same day every month */ 505 if (lflags == (F_ALLMONTH | F_DAYOFMONTH)) { 506 for (m = 1; m <= 12; m++) { 507 if (!remember_ymd(year, m, idayofmonth)) 508 continue; 509 remember(&remindex, yearp, monthp, dayp, edp, 510 year, m, idayofmonth, NULL); 511 } 512 continue; 513 } 514 515 /* Every day of a month */ 516 if (lflags == (F_ALLDAY | F_MONTH)) { 517 for (d = 1; d <= yearinfo->mondays[imonth]; d++) { 518 if (!remember_ymd(year, imonth, d)) 519 continue; 520 remember(&remindex, yearp, monthp, dayp, edp, 521 year, imonth, d, NULL); 522 } 523 continue; 524 } 525 526 /* One day of every month */ 527 if (lflags == (F_ALLMONTH | F_DAYOFWEEK)) { 528 for (m = 1; m <= 12; m++) { 529 if (!remember_ymd(year, m, idayofmonth)) 530 continue; 531 remember(&remindex, yearp, monthp, dayp, edp, 532 year, m, idayofmonth, NULL); 533 } 534 continue; 535 } 536 537 /* Every dayofweek of the year */ 538 if (lflags == (F_DAYOFWEEK | F_VARIABLE)) { 539 dow = first_dayofweek_of_year(year); 540 d = (idayofweek - dow + 8) % 7; 541 while (d <= 366) { 542 if (remember_yd(year, d, &rm, &rd)) 543 remember(&remindex, 544 yearp, monthp, dayp, edp, 545 year, rm, rd, NULL); 546 d += 7; 547 } 548 continue; 549 } 550 551 /* A certain dayofweek of a month */ 552 if (lflags == 553 (F_MONTH | F_DAYOFWEEK | F_MODIFIERINDEX | F_VARIABLE)) { 554 offset = indextooffset(modifierindex); 555 dow = first_dayofweek_of_month(year, imonth); 556 d = (idayofweek - dow + 8) % 7; 557 558 if (offset > 0) { 559 while (d <= yearinfo->mondays[imonth]) { 560 if (--offset == 0 561 && remember_ymd(year, imonth, d)) { 562 remember(&remindex, 563 yearp, monthp, dayp, edp, 564 year, imonth, d, NULL); 565 continue; 566 } 567 d += 7; 568 } 569 continue; 570 } 571 if (offset < 0) { 572 while (d <= yearinfo->mondays[imonth]) 573 d += 7; 574 while (offset != 0) { 575 offset++; 576 d -= 7; 577 } 578 if (remember_ymd(year, imonth, d)) 579 remember(&remindex, 580 yearp, monthp, dayp, edp, 581 year, imonth, d, NULL); 582 continue; 583 } 584 continue; 585 } 586 587 /* Every dayofweek of the month */ 588 if (lflags == (F_DAYOFWEEK | F_MONTH | F_VARIABLE)) { 589 dow = first_dayofweek_of_month(year, imonth); 590 d = (idayofweek - dow + 8) % 7; 591 while (d <= yearinfo->mondays[imonth]) { 592 if (remember_ymd(year, imonth, d)) 593 remember(&remindex, 594 yearp, monthp, dayp, edp, 595 year, imonth, d, NULL); 596 d += 7; 597 } 598 continue; 599 } 600 601 /* Easter */ 602 if ((lflags & ~F_MODIFIEROFFSET) == 603 (F_SPECIALDAY | F_VARIABLE | F_EASTER)) { 604 offset = 0; 605 if ((lflags & F_MODIFIEROFFSET) != 0) 606 offset = parseoffset(modifieroffset); 607 if (remember_yd(year, yearinfo->ieaster + offset, 608 &rm, &rd)) 609 remember(&remindex, yearp, monthp, dayp, edp, 610 year, rm, rd, NULL); 611 continue; 612 } 613 614 /* Paskha */ 615 if ((lflags & ~F_MODIFIEROFFSET) == 616 (F_SPECIALDAY | F_VARIABLE | F_PASKHA)) { 617 offset = 0; 618 if ((lflags & F_MODIFIEROFFSET) != 0) 619 offset = parseoffset(modifieroffset); 620 if (remember_yd(year, yearinfo->ipaskha + offset, 621 &rm, &rd)) 622 remember(&remindex, yearp, monthp, dayp, edp, 623 year, rm, rd, NULL); 624 continue; 625 } 626 627 /* Chinese New Year */ 628 if ((lflags & ~F_MODIFIEROFFSET) == 629 (F_SPECIALDAY | F_VARIABLE | F_CNY)) { 630 offset = 0; 631 if ((lflags & F_MODIFIEROFFSET) != 0) 632 offset = parseoffset(modifieroffset); 633 if (remember_yd(year, yearinfo->firstcnyday + offset, 634 &rm, &rd)) 635 remember(&remindex, yearp, monthp, dayp, edp, 636 year, rm, rd, NULL); 637 continue; 638 } 639 640 /* FullMoon */ 641 if ((lflags & ~F_MODIFIEROFFSET) == 642 (F_SPECIALDAY | F_VARIABLE | F_FULLMOON)) { 643 int i; 644 645 offset = 0; 646 if ((lflags & F_MODIFIEROFFSET) != 0) 647 offset = parseoffset(modifieroffset); 648 for (i = 0; yearinfo->ffullmoon[i] > 0; i++) { 649 if (remember_yd(year, 650 floor(yearinfo->ffullmoon[i]) + offset, 651 &rm, &rd)) { 652 ed = floattotime( 653 yearinfo->ffullmoon[i]); 654 remember(&remindex, 655 yearp, monthp, dayp, edp, 656 year, rm, rd, ed); 657 } 658 } 659 continue; 660 } 661 662 /* NewMoon */ 663 if ((lflags & ~F_MODIFIEROFFSET) == 664 (F_SPECIALDAY | F_VARIABLE | F_NEWMOON)) { 665 int i; 666 667 offset = 0; 668 if ((lflags & F_MODIFIEROFFSET) != 0) 669 offset = parseoffset(modifieroffset); 670 for (i = 0; yearinfo->ffullmoon[i] > 0; i++) { 671 if (remember_yd(year, 672 floor(yearinfo->fnewmoon[i]) + offset, 673 &rm, &rd)) { 674 ed = floattotime(yearinfo->fnewmoon[i]); 675 remember(&remindex, 676 yearp, monthp, dayp, edp, 677 year, rm, rd, ed); 678 } 679 } 680 continue; 681 } 682 683 /* (Mar|Sep)Equinox */ 684 if ((lflags & ~F_MODIFIEROFFSET) == 685 (F_SPECIALDAY | F_VARIABLE | F_MAREQUINOX)) { 686 offset = 0; 687 if ((lflags & F_MODIFIEROFFSET) != 0) 688 offset = parseoffset(modifieroffset); 689 if (remember_yd(year, yearinfo->equinoxdays[0] + offset, 690 &rm, &rd)) { 691 ed = floattotime(yearinfo->equinoxdays[0]); 692 remember(&remindex, yearp, monthp, dayp, edp, 693 year, rm, rd, ed); 694 } 695 continue; 696 } 697 if ((lflags & ~F_MODIFIEROFFSET) == 698 (F_SPECIALDAY | F_VARIABLE | F_SEPEQUINOX)) { 699 offset = 0; 700 if ((lflags & F_MODIFIEROFFSET) != 0) 701 offset = parseoffset(modifieroffset); 702 if (remember_yd(year, yearinfo->equinoxdays[1] + offset, 703 &rm, &rd)) { 704 ed = floattotime(yearinfo->equinoxdays[1]); 705 remember(&remindex, yearp, monthp, dayp, edp, 706 year, rm, rd, ed); 707 } 708 continue; 709 } 710 711 /* (Jun|Dec)Solstice */ 712 if ((lflags & ~F_MODIFIEROFFSET) == 713 (F_SPECIALDAY | F_VARIABLE | F_JUNSOLSTICE)) { 714 offset = 0; 715 if ((lflags & F_MODIFIEROFFSET) != 0) 716 offset = parseoffset(modifieroffset); 717 if (remember_yd(year, 718 yearinfo->solsticedays[0] + offset, &rm, &rd)) { 719 ed = floattotime(yearinfo->solsticedays[0]); 720 remember(&remindex, yearp, monthp, dayp, edp, 721 year, rm, rd, ed); 722 } 723 continue; 724 } 725 if ((lflags & ~F_MODIFIEROFFSET) == 726 (F_SPECIALDAY | F_VARIABLE | F_DECSOLSTICE)) { 727 offset = 0; 728 if ((lflags & F_MODIFIEROFFSET) != 0) 729 offset = parseoffset(modifieroffset); 730 if (remember_yd(year, 731 yearinfo->solsticedays[1] + offset, &rm, &rd)) { 732 ed = floattotime(yearinfo->solsticedays[1]); 733 remember(&remindex, yearp, monthp, dayp, edp, 734 year, rm, rd, ed); 735 } 736 continue; 737 } 738 739 printf("Unprocessed:\n"); 740 debug_determinestyle(2, date, lflags, month, imonth, 741 dayofmonth, idayofmonth, dayofweek, idayofweek, 742 modifieroffset, modifierindex, specialday, syear, iyear); 743 retvalsign = -1; 744 } 745 746 if (retvalsign == -1) 747 return (-remindex - 1); 748 else 749 return (remindex); 750 } 751 752 static char * 753 showflags(int flags) 754 { 755 static char s[1000]; 756 s[0] = '\0'; 757 758 if ((flags & F_YEAR) != 0) 759 strcat(s, "year "); 760 if ((flags & F_MONTH) != 0) 761 strcat(s, "month "); 762 if ((flags & F_DAYOFWEEK) != 0) 763 strcat(s, "dayofweek "); 764 if ((flags & F_DAYOFMONTH) != 0) 765 strcat(s, "dayofmonth "); 766 if ((flags & F_MODIFIERINDEX) != 0) 767 strcat(s, "modifierindex "); 768 if ((flags & F_MODIFIEROFFSET) != 0) 769 strcat(s, "modifieroffset "); 770 if ((flags & F_SPECIALDAY) != 0) 771 strcat(s, "specialday "); 772 if ((flags & F_ALLMONTH) != 0) 773 strcat(s, "allmonth "); 774 if ((flags & F_ALLDAY) != 0) 775 strcat(s, "allday "); 776 if ((flags & F_VARIABLE) != 0) 777 strcat(s, "variable "); 778 if ((flags & F_CNY) != 0) 779 strcat(s, "chinesenewyear "); 780 if ((flags & F_PASKHA) != 0) 781 strcat(s, "paskha "); 782 if ((flags & F_EASTER) != 0) 783 strcat(s, "easter "); 784 if ((flags & F_FULLMOON) != 0) 785 strcat(s, "fullmoon "); 786 if ((flags & F_NEWMOON) != 0) 787 strcat(s, "newmoon "); 788 if ((flags & F_MAREQUINOX) != 0) 789 strcat(s, "marequinox "); 790 if ((flags & F_SEPEQUINOX) != 0) 791 strcat(s, "sepequinox "); 792 if ((flags & F_JUNSOLSTICE) != 0) 793 strcat(s, "junsolstice "); 794 if ((flags & F_DECSOLSTICE) != 0) 795 strcat(s, "decsolstice "); 796 797 return s; 798 } 799 800 static const char * 801 getmonthname(int i) 802 { 803 if (nmonths[i - 1].len != 0 && nmonths[i - 1].name != NULL) 804 return (nmonths[i - 1].name); 805 return (months[i - 1]); 806 } 807 808 static int 809 checkmonth(char *s, size_t *len, size_t *offset, const char **month) 810 { 811 struct fixs *n; 812 int i; 813 814 for (i = 0; fnmonths[i].name != NULL; i++) { 815 n = fnmonths + i; 816 if (strncasecmp(s, n->name, n->len) == 0) { 817 *len = n->len; 818 *month = n->name; 819 *offset = i + 1; 820 return (1); 821 } 822 } 823 for (i = 0; nmonths[i].name != NULL; i++) { 824 n = nmonths + i; 825 if (strncasecmp(s, n->name, n->len) == 0) { 826 *len = n->len; 827 *month = n->name; 828 *offset = i + 1; 829 return (1); 830 } 831 } 832 for (i = 0; fmonths[i] != NULL; i++) { 833 *len = strlen(fmonths[i]); 834 if (strncasecmp(s, fmonths[i], *len) == 0) { 835 *month = fmonths[i]; 836 *offset = i + 1; 837 return (1); 838 } 839 } 840 for (i = 0; months[i] != NULL; i++) { 841 if (strncasecmp(s, months[i], 3) == 0) { 842 *len = 3; 843 *month = months[i]; 844 *offset = i + 1; 845 return (1); 846 } 847 } 848 return (0); 849 } 850 851 static const char * 852 getdayofweekname(int i) 853 { 854 if (ndays[i].len != 0 && ndays[i].name != NULL) 855 return (ndays[i].name); 856 return (days[i]); 857 } 858 859 static int 860 checkdayofweek(char *s, size_t *len, size_t *offset, const char **dow) 861 { 862 struct fixs *n; 863 int i; 864 865 for (i = 0; fndays[i].name != NULL; i++) { 866 n = fndays + i; 867 if (strncasecmp(s, n->name, n->len) == 0) { 868 *len = n->len; 869 *dow = n->name; 870 *offset = i; 871 return (1); 872 } 873 } 874 for (i = 0; ndays[i].name != NULL; i++) { 875 n = ndays + i; 876 if (strncasecmp(s, n->name, n->len) == 0) { 877 *len = n->len; 878 *dow = n->name; 879 *offset = i; 880 return (1); 881 } 882 } 883 for (i = 0; fdays[i] != NULL; i++) { 884 *len = strlen(fdays[i]); 885 if (strncasecmp(s, fdays[i], *len) == 0) { 886 *dow = fdays[i]; 887 *offset = i; 888 return (1); 889 } 890 } 891 for (i = 0; days[i] != NULL; i++) { 892 if (strncasecmp(s, days[i], 3) == 0) { 893 *len = 3; 894 *dow = days[i]; 895 *offset = i; 896 return (1); 897 } 898 } 899 return (0); 900 } 901 902 static int 903 isonlydigits(char *s, int nostar) 904 { 905 int i; 906 for (i = 0; s[i] != '\0'; i++) { 907 if (nostar == 0 && s[i] == '*' && s[i + 1] == '\0') 908 return 1; 909 if (!isdigit((unsigned char)s[i])) 910 return (0); 911 } 912 return (1); 913 } 914 915 static int 916 indextooffset(char *s) 917 { 918 int i; 919 struct fixs *n; 920 921 for (i = 0; i < 6; i++) { 922 if (strcasecmp(s, sequences[i]) == 0) { 923 if (i == 5) 924 return (-1); 925 return (i + 1); 926 } 927 } 928 for (i = 0; i < 6; i++) { 929 n = nsequences + i; 930 if (n->len == 0) 931 continue; 932 if (strncasecmp(s, n->name, n->len) == 0) { 933 if (i == 5) 934 return (-1); 935 return (i + 1); 936 } 937 } 938 return (0); 939 } 940 941 static int 942 parseoffset(char *s) 943 { 944 945 return strtol(s, NULL, 10); 946 } 947 948 static char * 949 floattotime(double f) 950 { 951 static char buf[100]; 952 int hh, mm, ss, i; 953 954 f -= floor(f); 955 i = f * SECSPERDAY; 956 957 hh = i / SECSPERHOUR; 958 i %= SECSPERHOUR; 959 mm = i / SECSPERMINUTE; 960 i %= SECSPERMINUTE; 961 ss = i; 962 963 sprintf(buf, "%02d:%02d:%02d", hh, mm, ss); 964 return (buf); 965 } 966 967 static char * 968 floattoday(int year, double f) 969 { 970 static char buf[100]; 971 int i, m, d, hh, mm, ss; 972 int *cumdays = cumdaytab[isleap(year)]; 973 974 for (i = 0; 1 + cumdays[i] < f; i++) 975 ; 976 m = --i; 977 d = floor(f - 1 - cumdays[i]); 978 f -= floor(f); 979 i = f * SECSPERDAY; 980 981 hh = i / SECSPERHOUR; 982 i %= SECSPERHOUR; 983 mm = i / SECSPERMINUTE; 984 i %= SECSPERMINUTE; 985 ss = i; 986 987 sprintf(buf, "%02d-%02d %02d:%02d:%02d", m, d, hh, mm, ss); 988 return (buf); 989 } 990 991 void 992 dodebug(char *what) 993 { 994 int year; 995 996 printf("UTCOffset: %g\n", UTCOffset); 997 printf("eastlongitude: %d\n", EastLongitude); 998 999 if (strcmp(what, "moon") == 0) { 1000 double ffullmoon[MAXMOONS], fnewmoon[MAXMOONS]; 1001 int i; 1002 1003 for (year = year1; year <= year2; year++) { 1004 fpom(year, UTCOffset, ffullmoon, fnewmoon); 1005 printf("Full moon %d:\t", year); 1006 for (i = 0; ffullmoon[i] >= 0; i++) { 1007 printf("%g (%s) ", ffullmoon[i], 1008 floattoday(year, ffullmoon[i])); 1009 } 1010 printf("\nNew moon %d:\t", year); 1011 for (i = 0; fnewmoon[i] >= 0; i++) { 1012 printf("%g (%s) ", fnewmoon[i], 1013 floattoday(year, fnewmoon[i])); 1014 } 1015 printf("\n"); 1016 1017 } 1018 1019 return; 1020 } 1021 1022 if (strcmp(what, "sun") == 0) { 1023 double equinoxdays[2], solsticedays[2]; 1024 for (year = year1; year <= year2; year++) { 1025 printf("Sun in %d:\n", year); 1026 fequinoxsolstice(year, UTCOffset, equinoxdays, 1027 solsticedays); 1028 printf("e[0] - %g (%s)\n", 1029 equinoxdays[0], 1030 floattoday(year, equinoxdays[0])); 1031 printf("e[1] - %g (%s)\n", 1032 equinoxdays[1], 1033 floattoday(year, equinoxdays[1])); 1034 printf("s[0] - %g (%s)\n", 1035 solsticedays[0], 1036 floattoday(year, solsticedays[0])); 1037 printf("s[1] - %g (%s)\n", 1038 solsticedays[1], 1039 floattoday(year, solsticedays[1])); 1040 } 1041 return; 1042 } 1043 } 1044