1 /*- 2 * Copyright (c) 1997 Wolfgang Helbig 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 #ifndef lint 28 static const char rcsid[] = 29 "$FreeBSD$"; 30 #endif /* not lint */ 31 32 #include <calendar.h> 33 #include <ctype.h> 34 #include <err.h> 35 #include <langinfo.h> 36 #include <locale.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <sysexits.h> 41 #include <time.h> 42 #include <unistd.h> 43 #include <wchar.h> 44 #include <wctype.h> 45 46 /* Width of one month with backward compatibility */ 47 #define MONTH_WIDTH_B_J 27 48 #define MONTH_WIDTH_B 20 49 50 #define MONTH_WIDTH_J 24 51 #define MONTH_WIDTH 18 52 53 #define MAX_WIDTH 28 54 55 typedef struct date date; 56 57 struct monthlines { 58 wchar_t name[MAX_WIDTH + 1]; 59 char lines[7][MAX_WIDTH + 1]; 60 char weeks[MAX_WIDTH + 1]; 61 }; 62 63 struct weekdays { 64 wchar_t names[7][4]; 65 }; 66 67 /* The switches from Julian to Gregorian in some countries */ 68 static struct djswitch { 69 const char *cc; /* Country code according to ISO 3166 */ 70 const char *nm; /* Name of country */ 71 date dt; /* Last day of Julian calendar */ 72 } switches[] = { 73 {"AL", "Albania", {1912, 11, 30}}, 74 {"AT", "Austria", {1583, 10, 5}}, 75 {"AU", "Australia", {1752, 9, 2}}, 76 {"BE", "Belgium", {1582, 12, 14}}, 77 {"BG", "Bulgaria", {1916, 3, 18}}, 78 {"CA", "Canada", {1752, 9, 2}}, 79 {"CH", "Switzerland", {1655, 2, 28}}, 80 {"CN", "China", {1911, 12, 18}}, 81 {"CZ", "Czech Republic",{1584, 1, 6}}, 82 {"DE", "Germany", {1700, 2, 18}}, 83 {"DK", "Denmark", {1700, 2, 18}}, 84 {"ES", "Spain", {1582, 10, 4}}, 85 {"FI", "Finland", {1753, 2, 17}}, 86 {"FR", "France", {1582, 12, 9}}, 87 {"GB", "United Kingdom",{1752, 9, 2}}, 88 {"GR", "Greece", {1924, 3, 9}}, 89 {"HU", "Hungary", {1587, 10, 21}}, 90 {"IS", "Iceland", {1700, 11, 16}}, 91 {"IT", "Italy", {1582, 10, 4}}, 92 {"JP", "Japan", {1918, 12, 18}}, 93 {"LI", "Lithuania", {1918, 2, 1}}, 94 {"LN", "Latin", {9999, 05, 31}}, 95 {"LU", "Luxembourg", {1582, 12, 14}}, 96 {"LV", "Latvia", {1918, 2, 1}}, 97 {"NL", "Netherlands", {1582, 12, 14}}, 98 {"NO", "Norway", {1700, 2, 18}}, 99 {"PL", "Poland", {1582, 10, 4}}, 100 {"PT", "Portugal", {1582, 10, 4}}, 101 {"RO", "Romania", {1919, 3, 31}}, 102 {"RU", "Russia", {1918, 1, 31}}, 103 {"SI", "Slovenia", {1919, 3, 4}}, 104 {"SW", "Sweden", {1753, 2, 17}}, 105 {"TR", "Turkey", {1926, 12, 18}}, 106 {"US", "United States", {1752, 9, 2}}, 107 {"YU", "Yugoslavia", {1919, 3, 4}} 108 }; 109 110 struct djswitch *dftswitch = 111 switches + sizeof(switches) / sizeof(struct djswitch) - 2; 112 /* default switch (should be "US") */ 113 114 /* Table used to print day of month and week numbers */ 115 char daystr[] = " 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15" 116 " 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31" 117 " 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47" 118 " 48 49 50 51 52 53"; 119 120 /* Table used to print day of year and week numbers */ 121 char jdaystr[] = " 1 2 3 4 5 6 7 8 9" 122 " 10 11 12 13 14 15 16 17 18 19" 123 " 20 21 22 23 24 25 26 27 28 29" 124 " 30 31 32 33 34 35 36 37 38 39" 125 " 40 41 42 43 44 45 46 47 48 49" 126 " 50 51 52 53 54 55 56 57 58 59" 127 " 60 61 62 63 64 65 66 67 68 69" 128 " 70 71 72 73 74 75 76 77 78 79" 129 " 80 81 82 83 84 85 86 87 88 89" 130 " 90 91 92 93 94 95 96 97 98 99" 131 " 100 101 102 103 104 105 106 107 108 109" 132 " 110 111 112 113 114 115 116 117 118 119" 133 " 120 121 122 123 124 125 126 127 128 129" 134 " 130 131 132 133 134 135 136 137 138 139" 135 " 140 141 142 143 144 145 146 147 148 149" 136 " 150 151 152 153 154 155 156 157 158 159" 137 " 160 161 162 163 164 165 166 167 168 169" 138 " 170 171 172 173 174 175 176 177 178 179" 139 " 180 181 182 183 184 185 186 187 188 189" 140 " 190 191 192 193 194 195 196 197 198 199" 141 " 200 201 202 203 204 205 206 207 208 209" 142 " 210 211 212 213 214 215 216 217 218 219" 143 " 220 221 222 223 224 225 226 227 228 229" 144 " 230 231 232 233 234 235 236 237 238 239" 145 " 240 241 242 243 244 245 246 247 248 249" 146 " 250 251 252 253 254 255 256 257 258 259" 147 " 260 261 262 263 264 265 266 267 268 269" 148 " 270 271 272 273 274 275 276 277 278 279" 149 " 280 281 282 283 284 285 286 287 288 289" 150 " 290 291 292 293 294 295 296 297 298 299" 151 " 300 301 302 303 304 305 306 307 308 309" 152 " 310 311 312 313 314 315 316 317 318 319" 153 " 320 321 322 323 324 325 326 327 328 329" 154 " 330 331 332 333 334 335 336 337 338 339" 155 " 340 341 342 343 344 345 346 347 348 349" 156 " 350 351 352 353 354 355 356 357 358 359" 157 " 360 361 362 363 364 365 366"; 158 159 int flag_weeks; /* user wants number of week */ 160 int nswitch; /* user defined switch date */ 161 int nswitchb; /* switch date for backward compatibility */ 162 163 char *center(char *s, char *t, int w); 164 wchar_t *wcenter(wchar_t *s, wchar_t *t, int w); 165 void mkmonth(int year, int month, int jd_flag, struct monthlines * monthl); 166 void mkmonthb(int year, int month, int jd_flag, struct monthlines * monthl); 167 void mkweekdays(struct weekdays * wds); 168 int parsemonth(const char *s, int *m, int *y); 169 void printcc(void); 170 void printeaster(int year, int julian, int orthodox); 171 void printmonth(int year, int month, int jd_flag); 172 void printmonthb(int year, int month, int jd_flag); 173 void printyear(int year, int jd_flag); 174 void printyearb(int year, int jd_flag); 175 int firstday(int y, int m); 176 date *sdate(int ndays, struct date * d); 177 date *sdateb(int ndays, struct date * d); 178 int sndays(struct date * d); 179 int sndaysb(struct date * d); 180 static void usage(void); 181 int weekdayb(int nd); 182 183 int 184 main(int argc, char *argv[]) 185 { 186 struct djswitch *p, *q; /* to search user defined switch date */ 187 date never = {10000, 1, 1}; /* outside valid range of dates */ 188 date ukswitch = {1752, 9, 2};/* switch date for Great Britain */ 189 int ch; /* holds the option character */ 190 int m = 0; /* month */ 191 int y = 0; /* year */ 192 int flag_backward = 0; /* user called cal--backward compat. */ 193 int flag_hole_year = 0; /* user wants the whole year */ 194 int flag_julian_cal = 0; /* user wants Julian Calendar */ 195 int flag_julian_day = 0; /* user wants the Julian day 196 * numbers */ 197 int flag_orthodox = 0; /* use wants Orthodox easter */ 198 int flag_easter = 0; /* use wants easter date */ 199 char *cp; /* character pointer */ 200 char *flag_month = NULL; /* requested month as string */ 201 const char *locale; /* locale to get country code */ 202 203 /* 204 * Use locale to determine the country code, 205 * and use the country code to determine the default 206 * switchdate and date format from the switches table. 207 */ 208 if (setlocale(LC_ALL, "") == NULL) 209 warn("setlocale"); 210 locale = setlocale(LC_TIME, NULL); 211 if (locale == NULL || 212 strcmp(locale, "C") == 0 || 213 strcmp(locale, "POSIX") == 0 || 214 strcmp(locale, "ASCII") == 0 || 215 strcmp(locale, "US-ASCII") == 0) 216 locale = "_US"; 217 q = switches + sizeof(switches) / sizeof(struct djswitch); 218 for (p = switches; p != q; p++) 219 if ((cp = strstr(locale, p->cc)) != NULL && *(cp - 1) == '_') 220 break; 221 if (p == q) { 222 nswitch = ndaysj(&dftswitch->dt); 223 } else { 224 nswitch = ndaysj(&p->dt); 225 dftswitch = p; 226 } 227 228 229 /* 230 * Get the filename portion of argv[0] and set flag_backward if 231 * this program is called "cal". 232 */ 233 cp = strrchr(argv[0], '/'); 234 cp = (cp == NULL) ? argv[0] : cp + 1; 235 if (strcmp("cal", cp) == 0) 236 flag_backward = 1; 237 238 /* Set the switch date to United Kingdom if backwards compatible */ 239 if (flag_backward) 240 nswitchb = ndaysj(&ukswitch); 241 242 while ((ch = getopt(argc, argv, "Jejm:ops:wy")) != -1) 243 switch (ch) { 244 case 'J': 245 if (flag_backward) 246 usage(); 247 nswitch = ndaysj(&never); 248 flag_julian_cal = 1; 249 break; 250 case 'e': 251 if (flag_backward) 252 usage(); 253 flag_easter = 1; 254 break; 255 case 'j': 256 flag_julian_day = 1; 257 break; 258 case 'm': 259 flag_month = optarg; 260 break; 261 case 'o': 262 if (flag_backward) 263 usage(); 264 flag_orthodox = 1; 265 flag_easter = 1; 266 break; 267 case 'p': 268 if (flag_backward) 269 usage(); 270 printcc(); 271 return (0); 272 break; 273 case 's': 274 if (flag_backward) 275 usage(); 276 q = switches + 277 sizeof(switches) / sizeof(struct djswitch); 278 for (p = switches; 279 p != q && strcmp(p->cc, optarg) != 0; p++) 280 ; 281 if (p == q) 282 errx(EX_USAGE, 283 "%s: invalid country code", optarg); 284 nswitch = ndaysj(&(p->dt)); 285 break; 286 case 'w': 287 if (flag_backward) 288 usage(); 289 flag_weeks = 1; 290 break; 291 case 'y': 292 flag_hole_year = 1; 293 break; 294 default: 295 usage(); 296 } 297 298 argc -= optind; 299 argv += optind; 300 301 switch (argc) { 302 case 2: 303 if (flag_easter) 304 usage(); 305 flag_month = *argv++; 306 /* FALLTHROUGH */ 307 case 1: 308 y = atoi(*argv++); 309 if (y < 1 || y > 9999) 310 errx(EX_USAGE, "year %d not in range 1..9999", y); 311 break; 312 case 0: 313 { 314 time_t t; 315 struct tm *tm; 316 317 t = time(NULL); 318 tm = localtime(&t); 319 y = tm->tm_year + 1900; 320 m = tm->tm_mon + 1; 321 } 322 break; 323 default: 324 usage(); 325 } 326 327 if (flag_month != NULL) { 328 if (parsemonth(flag_month, &m, &y)) { 329 errx(EX_USAGE, 330 "%s is neither a month number (1..12) nor a name", 331 flag_month); 332 } 333 } 334 335 if (flag_easter) 336 printeaster(y, flag_julian_cal, flag_orthodox); 337 else if (argc == 1 || flag_hole_year) 338 if (flag_backward) 339 printyearb(y, flag_julian_day); 340 else 341 printyear(y, flag_julian_day); 342 else 343 if (flag_backward) 344 printmonthb(y, m, flag_julian_day); 345 else 346 printmonth(y, m, flag_julian_day); 347 348 return (0); 349 } 350 351 static void 352 usage(void) 353 { 354 355 fputs( 356 "usage: cal [-jy] [[month] year]\n" 357 " cal [-j] [-m month] [year]\n" 358 " ncal [-Jjpwy] [-s country_code] [[month] year]\n" 359 " ncal [-Jeo] [year]\n", stderr); 360 exit(EX_USAGE); 361 } 362 363 /* print the assumed switches for all countries */ 364 void 365 printcc(void) 366 { 367 struct djswitch *p; 368 int n; /* number of lines to print */ 369 int m; /* offset from left to right table entry on the same line */ 370 371 #define FSTR "%c%s %-15s%4d-%02d-%02d" 372 #define DFLT(p) ((p) == dftswitch ? '*' : ' ') 373 #define FSTRARG(p) DFLT(p), (p)->cc, (p)->nm, (p)->dt.y, (p)->dt.m, (p)->dt.d 374 375 n = sizeof(switches) / sizeof(struct djswitch); 376 m = (n + 1) / 2; 377 n /= 2; 378 for (p = switches; p != switches + n; p++) 379 printf(FSTR" "FSTR"\n", FSTRARG(p), FSTRARG(p+m)); 380 if (m != n) 381 printf(FSTR"\n", FSTRARG(p)); 382 } 383 384 /* print the date of easter sunday */ 385 void 386 printeaster(int y, int julian, int orthodox) 387 { 388 date dt; 389 struct tm tm; 390 char buf[80]; 391 static int d_first = -1; 392 393 if (d_first < 0) 394 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 395 /* force orthodox easter for years before 1583 */ 396 if (y < 1583) 397 orthodox = 1; 398 399 if (orthodox) 400 if (julian) 401 easteroj(y, &dt); 402 else 403 easterog(y, &dt); 404 else 405 easterg(y, &dt); 406 407 memset(&tm, 0, sizeof(tm)); 408 tm.tm_year = dt.y - 1900; 409 tm.tm_mon = dt.m - 1; 410 tm.tm_mday = dt.d; 411 strftime(buf, sizeof(buf), d_first ? "%e %B %Y" : "%B %e %Y", &tm); 412 printf("%s\n", buf); 413 } 414 415 void 416 printmonth(int y, int m, int jd_flag) 417 { 418 struct monthlines month; 419 struct weekdays wds; 420 int i; 421 422 mkmonth(y, m - 1, jd_flag, &month); 423 mkweekdays(&wds); 424 printf(" %ls %d\n", month.name, y); 425 for (i = 0; i != 7; i++) 426 printf("%.2ls%s\n", wds.names[i], month.lines[i]); 427 if (flag_weeks) 428 printf(" %s\n", month.weeks); 429 } 430 431 void 432 printmonthb(int y, int m, int jd_flag) 433 { 434 struct monthlines month; 435 struct weekdays wds; 436 wchar_t s[MAX_WIDTH], t[MAX_WIDTH]; 437 int i; 438 int mw; 439 440 mkmonthb(y, m - 1, jd_flag, &month); 441 mkweekdays(&wds); 442 443 mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; 444 445 swprintf(s, MAX_WIDTH, L"%ls %d", month.name, y); 446 wprintf(L"%ls\n", wcenter(t, s, mw)); 447 448 if (jd_flag) 449 wprintf(L" %ls %ls %ls %ls %ls %ls %.2ls\n", 450 wds.names[6], wds.names[0], 451 wds.names[1], wds.names[2], wds.names[3], 452 wds.names[4], wds.names[5]); 453 else 454 wprintf(L"%ls%ls%ls%ls%ls%ls%.2ls\n", wds.names[6], 455 wds.names[0], wds.names[1], wds.names[2], wds.names[3], 456 wds.names[4], wds.names[5]); 457 458 for (i = 0; i != 6; i++) 459 printf("%s\n", month.lines[i]+1); 460 } 461 462 void 463 printyear(int y, int jd_flag) 464 { 465 struct monthlines year[12]; 466 struct weekdays wds; 467 char s[80], t[80]; 468 int i, j; 469 int mpl; 470 int mw; 471 472 for (i = 0; i != 12; i++) 473 mkmonth(y, i, jd_flag, year + i); 474 mkweekdays(&wds); 475 mpl = jd_flag ? 3 : 4; 476 mw = jd_flag ? MONTH_WIDTH_J : MONTH_WIDTH; 477 478 sprintf(s, "%d", y); 479 printf("%s\n", center(t, s, mpl * mw)); 480 481 for (j = 0; j != 12; j += mpl) { 482 printf(" %-*ls%-*ls", 483 mw, year[j].name, 484 mw, year[j + 1].name); 485 if (mpl == 3) 486 printf("%ls\n", year[j + 2].name); 487 else 488 printf("%-*ls%ls\n", 489 mw, year[j + 2].name, 490 year[j + 3].name); 491 for (i = 0; i != 7; i++) { 492 printf("%.2ls%-*s%-*s", 493 wds.names[i], 494 mw, year[j].lines[i], 495 mw, year[j + 1].lines[i]); 496 if (mpl == 3) 497 printf("%s\n", year[j + 2].lines[i]); 498 else 499 printf("%-*s%s\n", 500 mw, year[j + 2].lines[i], 501 year[j + 3].lines[i]); 502 } 503 if (flag_weeks) { 504 if (mpl == 3) 505 printf(" %-*s%-*s%-s\n", 506 mw, year[j].weeks, 507 mw, year[j + 1].weeks, 508 year[j + 2].weeks); 509 else 510 printf(" %-*s%-*s%-*s%-s\n", 511 mw, year[j].weeks, 512 mw, year[j + 1].weeks, 513 mw, year[j + 2].weeks, 514 year[j + 3].weeks); 515 } 516 } 517 } 518 519 void 520 printyearb(int y, int jd_flag) 521 { 522 struct monthlines year[12]; 523 struct weekdays wds; 524 char s[80], t[80]; 525 wchar_t ws[80], wt[80]; 526 int i, j; 527 int mpl; 528 int mw; 529 530 for (i = 0; i != 12; i++) 531 mkmonthb(y, i, jd_flag, year + i); 532 mkweekdays(&wds); 533 mpl = jd_flag ? 2 : 3; 534 mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; 535 536 sprintf(s, "%d", y); 537 printf("%s\n\n", center(t, s, mw * mpl + mpl)); 538 539 for (j = 0; j != 12; j += mpl) { 540 printf("%-*ls ", mw, wcenter(ws, year[j].name, mw)); 541 if (mpl == 2) 542 printf("%ls\n", wcenter(ws, year[j + 1].name, mw)); 543 else 544 printf("%-*ls %ls\n", mw, 545 wcenter(ws, year[j + 1].name, mw), 546 wcenter(wt, year[j + 2].name, mw)); 547 548 if (mpl == 2) 549 wprintf(L" %ls %ls %ls %ls %ls %ls %ls " 550 " %ls %ls %ls %ls %ls %ls %.2ls\n", 551 wds.names[6], wds.names[0], wds.names[1], 552 wds.names[2], wds.names[3], wds.names[4], 553 wds.names[5], 554 wds.names[6], wds.names[0], wds.names[1], 555 wds.names[2], wds.names[3], wds.names[4], 556 wds.names[5]); 557 else 558 wprintf(L"%ls%ls%ls%ls%ls%ls%ls " 559 "%ls%ls%ls%ls%ls%ls%ls " 560 "%ls%ls%ls%ls%ls%ls%.2ls\n", 561 wds.names[6], wds.names[0], wds.names[1], 562 wds.names[2], wds.names[3], wds.names[4], 563 wds.names[5], 564 wds.names[6], wds.names[0], wds.names[1], 565 wds.names[2], wds.names[3], wds.names[4], 566 wds.names[5], 567 wds.names[6], wds.names[0], wds.names[1], 568 wds.names[2], wds.names[3], wds.names[4], 569 wds.names[5]); 570 for (i = 0; i != 6; i++) { 571 if (mpl == 2) 572 printf("%-*s %s\n", 573 mw, year[j].lines[i]+1, 574 year[j + 1].lines[i]+1); 575 else 576 printf("%-*s %-*s %s\n", 577 mw, year[j].lines[i]+1, 578 mw, year[j + 1].lines[i]+1, 579 year[j + 2].lines[i]+1); 580 581 } 582 } 583 } 584 585 void 586 mkmonth(int y, int m, int jd_flag, struct monthlines *mlines) 587 { 588 589 struct tm tm; /* for strftime printing local names of 590 * months */ 591 date dt; /* handy date */ 592 int dw; /* width of numbers */ 593 int first; /* first day of month */ 594 int firstm; /* first day of first week of month */ 595 int i, j, k; /* just indices */ 596 int last; /* the first day of next month */ 597 int jan1 = 0; /* the first day of this year */ 598 char *ds; /* pointer to day strings (daystr or 599 * jdaystr) */ 600 601 /* Set name of month. */ 602 memset(&tm, 0, sizeof(tm)); 603 tm.tm_mon = m; 604 wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]), 605 L"%OB", &tm); 606 mlines->name[0] = towupper(mlines->name[0]); 607 608 /* 609 * Set first and last to the day number of the first day of this 610 * month and the first day of next month respectively. Set jan1 to 611 * the day number of the first day of this year. 612 */ 613 first = firstday(y, m + 1); 614 if (m == 11) 615 last = firstday(y + 1, 1); 616 else 617 last = firstday(y, m + 2); 618 619 if (jd_flag) 620 jan1 = firstday(y, 1); 621 622 /* 623 * Set firstm to the day number of monday of the first week of 624 * this month. (This might be in the last month) 625 */ 626 firstm = first - weekday(first); 627 628 /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ 629 if (jd_flag) { 630 ds = jdaystr; 631 dw = 4; 632 } else { 633 ds = daystr; 634 dw = 3; 635 } 636 637 /* 638 * Fill the lines with day of month or day of year (julian day) 639 * line index: i, each line is one weekday. column index: j, each 640 * column is one day number. print column index: k. 641 */ 642 for (i = 0; i != 7; i++) { 643 for (j = firstm + i, k = 0; j < last; j += 7, k += dw) 644 if (j >= first) { 645 if (jd_flag) 646 dt.d = j - jan1 + 1; 647 else 648 sdate(j, &dt); 649 memcpy(mlines->lines[i] + k, 650 ds + dt.d * dw, dw); 651 } else 652 memcpy(mlines->lines[i] + k, " ", dw); 653 mlines->lines[i][k] = '\0'; 654 655 } 656 657 /* fill the weeknumbers */ 658 if (flag_weeks) { 659 for (j = firstm, k = 0; j < last; k += dw, j += 7) 660 if (j <= nswitch) 661 memset(mlines->weeks + k, ' ', dw); 662 else 663 memcpy(mlines->weeks + k, 664 ds + week(j, &i)*dw, dw); 665 mlines->weeks[k] = '\0'; 666 } 667 } 668 669 void 670 mkmonthb(int y, int m, int jd_flag, struct monthlines *mlines) 671 { 672 673 struct tm tm; /* for strftime printing local names of 674 * months */ 675 date dt; /* handy date */ 676 int dw; /* width of numbers */ 677 int first; /* first day of month */ 678 int firsts; /* sunday of first week of month */ 679 int i, j, k; /* just indices */ 680 int jan1 = 0; /* the first day of this year */ 681 int last; /* the first day of next month */ 682 char *ds; /* pointer to day strings (daystr or 683 * jdaystr) */ 684 685 /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ 686 if (jd_flag) { 687 ds = jdaystr; 688 dw = 4; 689 } else { 690 ds = daystr; 691 dw = 3; 692 } 693 694 /* Set name of month centered */ 695 memset(&tm, 0, sizeof(tm)); 696 tm.tm_mon = m; 697 wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]), 698 L"%OB", &tm); 699 mlines->name[0] = towupper(mlines->name[0]); 700 701 /* 702 * Set first and last to the day number of the first day of this 703 * month and the first day of next month respectively. Set jan1 to 704 * the day number of Jan 1st of this year. 705 */ 706 dt.y = y; 707 dt.m = m + 1; 708 dt.d = 1; 709 first = sndaysb(&dt); 710 if (m == 11) { 711 dt.y = y + 1; 712 dt.m = 1; 713 dt.d = 1; 714 } else { 715 dt.y = y; 716 dt.m = m + 2; 717 dt.d = 1; 718 } 719 last = sndaysb(&dt); 720 721 if (jd_flag) { 722 dt.y = y; 723 dt.m = 1; 724 dt.d = 1; 725 jan1 = sndaysb(&dt); 726 } 727 728 /* 729 * Set firsts to the day number of sunday of the first week of 730 * this month. (This might be in the last month) 731 */ 732 firsts = first - (weekday(first)+1) % 7; 733 734 /* 735 * Fill the lines with day of month or day of year (Julian day) 736 * line index: i, each line is one week. column index: j, each 737 * column is one day number. print column index: k. 738 */ 739 for (i = 0; i != 6; i++) { 740 for (j = firsts + 7 * i, k = 0; j < last && k != dw * 7; 741 j++, k += dw) 742 if (j >= first) { 743 if (jd_flag) 744 dt.d = j - jan1 + 1; 745 else 746 sdateb(j, &dt); 747 memcpy(mlines->lines[i] + k, 748 ds + dt.d * dw, dw); 749 } else 750 memcpy(mlines->lines[i] + k, " ", dw); 751 if (k == 0) 752 mlines->lines[i][1] = '\0'; 753 else 754 mlines->lines[i][k] = '\0'; 755 } 756 } 757 758 /* Put the local names of weekdays into the wds */ 759 void 760 mkweekdays(struct weekdays *wds) 761 { 762 int i, len; 763 struct tm tm; 764 wchar_t buf[20]; 765 766 memset(&tm, 0, sizeof(tm)); 767 768 for (i = 0; i != 7; i++) { 769 tm.tm_wday = (i+1) % 7; 770 wcsftime(buf, sizeof(buf), L"%a", &tm); 771 len = wcslen(buf); 772 if (len > 2) 773 len = 2; 774 wcscpy(wds->names[i], L" "); 775 wcsncpy(wds->names[i] + 2 - len, buf, len); 776 } 777 } 778 779 /* 780 * Compute the day number of the first 781 * existing date after the first day in month. 782 * (the first day in month and even the month might not exist!) 783 */ 784 int 785 firstday(int y, int m) 786 { 787 date dt; 788 int nd; 789 790 dt.y = y; 791 dt.m = m; 792 dt.d = 1; 793 nd = sndays(&dt); 794 for (;;) { 795 sdate(nd, &dt); 796 if ((dt.m >= m && dt.y == y) || dt.y > y) 797 return (nd); 798 else 799 nd++; 800 } 801 /* NEVER REACHED */ 802 } 803 804 /* 805 * Compute the number of days from date, obey the local switch from 806 * Julian to Gregorian if specified by the user. 807 */ 808 int 809 sndays(struct date *d) 810 { 811 812 if (nswitch != 0) 813 if (nswitch < ndaysj(d)) 814 return (ndaysg(d)); 815 else 816 return (ndaysj(d)); 817 else 818 return ndaysg(d); 819 } 820 821 /* 822 * Compute the number of days from date, obey the switch from 823 * Julian to Gregorian as used by UK and her colonies. 824 */ 825 int 826 sndaysb(struct date *d) 827 { 828 829 if (nswitchb < ndaysj(d)) 830 return (ndaysg(d)); 831 else 832 return (ndaysj(d)); 833 } 834 835 /* Inverse of sndays */ 836 struct date * 837 sdate(int nd, struct date *d) 838 { 839 840 if (nswitch < nd) 841 return (gdate(nd, d)); 842 else 843 return (jdate(nd, d)); 844 } 845 846 /* Inverse of sndaysb */ 847 struct date * 848 sdateb(int nd, struct date *d) 849 { 850 851 if (nswitchb < nd) 852 return (gdate(nd, d)); 853 else 854 return (jdate(nd, d)); 855 } 856 857 /* Center string t in string s of length w by putting enough leading blanks */ 858 char * 859 center(char *s, char *t, int w) 860 { 861 char blanks[80]; 862 863 memset(blanks, ' ', sizeof(blanks)); 864 sprintf(s, "%.*s%s", (int)(w - strlen(t)) / 2, blanks, t); 865 return (s); 866 } 867 868 /* Center string t in string s of length w by putting enough leading blanks */ 869 wchar_t * 870 wcenter(wchar_t *s, wchar_t *t, int w) 871 { 872 char blanks[80]; 873 874 memset(blanks, ' ', sizeof(blanks)); 875 swprintf(s, MAX_WIDTH, L"%.*s%ls", (int)(w - wcslen(t)) / 2, blanks, t); 876 return (s); 877 } 878 879 int 880 parsemonth(const char *s, int *m, int *y) 881 { 882 int nm, ny; 883 char *cp; 884 struct tm tm; 885 886 nm = (int)strtol(s, &cp, 10); 887 if (cp != s) { 888 ny = *y; 889 if (*cp == '\0') { 890 ; /* no special action */ 891 } else if (*cp == 'f' || *cp == 'F') { 892 if (nm <= *m) 893 ny++; 894 } else if (*cp == 'p' || *cp == 'P') { 895 if (nm >= *m) 896 ny--; 897 } else 898 return (1); 899 if (nm < 1 || nm > 12) 900 return 1; 901 *m = nm; 902 *y = ny; 903 return (0); 904 } 905 if (strptime(s, "%B", &tm) != NULL || strptime(s, "%b", &tm) != NULL) { 906 *m = tm.tm_mon + 1; 907 return (0); 908 } 909 return (1); 910 } 911