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 #include <term.h> 46 #undef lines /* term.h defines this */ 47 48 /* Width of one month with backward compatibility */ 49 #define MONTH_WIDTH_B_J 27 50 #define MONTH_WIDTH_B 20 51 52 #define MONTH_WIDTH_J 24 53 #define MONTH_WIDTH 18 54 55 #define MAX_WIDTH 64 56 57 typedef struct date date; 58 59 struct monthlines { 60 wchar_t name[MAX_WIDTH + 1]; 61 char lines[7][MAX_WIDTH + 1]; 62 char weeks[MAX_WIDTH + 1]; 63 }; 64 65 struct weekdays { 66 wchar_t names[7][4]; 67 }; 68 69 /* The switches from Julian to Gregorian in some countries */ 70 static struct djswitch { 71 const char *cc; /* Country code according to ISO 3166 */ 72 const char *nm; /* Name of country */ 73 date dt; /* Last day of Julian calendar */ 74 } switches[] = { 75 {"AL", "Albania", {1912, 11, 30}}, 76 {"AT", "Austria", {1583, 10, 5}}, 77 {"AU", "Australia", {1752, 9, 2}}, 78 {"BE", "Belgium", {1582, 12, 14}}, 79 {"BG", "Bulgaria", {1916, 3, 18}}, 80 {"CA", "Canada", {1752, 9, 2}}, 81 {"CH", "Switzerland", {1655, 2, 28}}, 82 {"CN", "China", {1911, 12, 18}}, 83 {"CZ", "Czech Republic",{1584, 1, 6}}, 84 {"DE", "Germany", {1700, 2, 18}}, 85 {"DK", "Denmark", {1700, 2, 18}}, 86 {"ES", "Spain", {1582, 10, 4}}, 87 {"FI", "Finland", {1753, 2, 17}}, 88 {"FR", "France", {1582, 12, 9}}, 89 {"GB", "United Kingdom",{1752, 9, 2}}, 90 {"GR", "Greece", {1924, 3, 9}}, 91 {"HU", "Hungary", {1587, 10, 21}}, 92 {"IS", "Iceland", {1700, 11, 16}}, 93 {"IT", "Italy", {1582, 10, 4}}, 94 {"JP", "Japan", {1918, 12, 18}}, 95 {"LI", "Lithuania", {1918, 2, 1}}, 96 {"LN", "Latin", {9999, 05, 31}}, 97 {"LU", "Luxembourg", {1582, 12, 14}}, 98 {"LV", "Latvia", {1918, 2, 1}}, 99 {"NL", "Netherlands", {1582, 12, 14}}, 100 {"NO", "Norway", {1700, 2, 18}}, 101 {"PL", "Poland", {1582, 10, 4}}, 102 {"PT", "Portugal", {1582, 10, 4}}, 103 {"RO", "Romania", {1919, 3, 31}}, 104 {"RU", "Russia", {1918, 1, 31}}, 105 {"SI", "Slovenia", {1919, 3, 4}}, 106 {"SW", "Sweden", {1753, 2, 17}}, 107 {"TR", "Turkey", {1926, 12, 18}}, 108 {"US", "United States", {1752, 9, 2}}, 109 {"YU", "Yugoslavia", {1919, 3, 4}} 110 }; 111 112 struct djswitch *dftswitch = 113 switches + sizeof(switches) / sizeof(struct djswitch) - 2; 114 /* default switch (should be "US") */ 115 116 /* Table used to print day of month and week numbers */ 117 char daystr[] = " 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15" 118 " 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31" 119 " 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47" 120 " 48 49 50 51 52 53"; 121 122 /* Table used to print day of year and week numbers */ 123 char jdaystr[] = " 1 2 3 4 5 6 7 8 9" 124 " 10 11 12 13 14 15 16 17 18 19" 125 " 20 21 22 23 24 25 26 27 28 29" 126 " 30 31 32 33 34 35 36 37 38 39" 127 " 40 41 42 43 44 45 46 47 48 49" 128 " 50 51 52 53 54 55 56 57 58 59" 129 " 60 61 62 63 64 65 66 67 68 69" 130 " 70 71 72 73 74 75 76 77 78 79" 131 " 80 81 82 83 84 85 86 87 88 89" 132 " 90 91 92 93 94 95 96 97 98 99" 133 " 100 101 102 103 104 105 106 107 108 109" 134 " 110 111 112 113 114 115 116 117 118 119" 135 " 120 121 122 123 124 125 126 127 128 129" 136 " 130 131 132 133 134 135 136 137 138 139" 137 " 140 141 142 143 144 145 146 147 148 149" 138 " 150 151 152 153 154 155 156 157 158 159" 139 " 160 161 162 163 164 165 166 167 168 169" 140 " 170 171 172 173 174 175 176 177 178 179" 141 " 180 181 182 183 184 185 186 187 188 189" 142 " 190 191 192 193 194 195 196 197 198 199" 143 " 200 201 202 203 204 205 206 207 208 209" 144 " 210 211 212 213 214 215 216 217 218 219" 145 " 220 221 222 223 224 225 226 227 228 229" 146 " 230 231 232 233 234 235 236 237 238 239" 147 " 240 241 242 243 244 245 246 247 248 249" 148 " 250 251 252 253 254 255 256 257 258 259" 149 " 260 261 262 263 264 265 266 267 268 269" 150 " 270 271 272 273 274 275 276 277 278 279" 151 " 280 281 282 283 284 285 286 287 288 289" 152 " 290 291 292 293 294 295 296 297 298 299" 153 " 300 301 302 303 304 305 306 307 308 309" 154 " 310 311 312 313 314 315 316 317 318 319" 155 " 320 321 322 323 324 325 326 327 328 329" 156 " 330 331 332 333 334 335 336 337 338 339" 157 " 340 341 342 343 344 345 346 347 348 349" 158 " 350 351 352 353 354 355 356 357 358 359" 159 " 360 361 362 363 364 365 366"; 160 161 int flag_weeks; /* user wants number of week */ 162 int nswitch; /* user defined switch date */ 163 int nswitchb; /* switch date for backward compatibility */ 164 const char *term_so, *term_se; 165 int today; 166 167 char *center(char *s, char *t, int w); 168 wchar_t *wcenter(wchar_t *s, wchar_t *t, int w); 169 void mkmonth(int year, int month, int jd_flag, struct monthlines * monthl); 170 void mkmonthb(int year, int month, int jd_flag, struct monthlines * monthl); 171 void mkweekdays(struct weekdays * wds); 172 int parsemonth(const char *s, int *m, int *y); 173 void printcc(void); 174 void printeaster(int year, int julian, int orthodox); 175 void printmonth(int year, int month, int jd_flag); 176 void printmonthb(int year, int month, int jd_flag); 177 void printyear(int year, int jd_flag); 178 void printyearb(int year, int jd_flag); 179 int firstday(int y, int m); 180 date *sdate(int ndays, struct date * d); 181 date *sdateb(int ndays, struct date * d); 182 int sndays(struct date * d); 183 int sndaysb(struct date * d); 184 static void usage(void); 185 int weekdayb(int nd); 186 187 int 188 main(int argc, char *argv[]) 189 { 190 struct djswitch *p, *q; /* to search user defined switch date */ 191 date never = {10000, 1, 1}; /* outside valid range of dates */ 192 date ukswitch = {1752, 9, 2};/* switch date for Great Britain */ 193 int ch; /* holds the option character */ 194 int m = 0; /* month */ 195 int y = 0; /* year */ 196 int flag_backward = 0; /* user called cal--backward compat. */ 197 int flag_hole_year = 0; /* user wants the whole year */ 198 int flag_julian_cal = 0; /* user wants Julian Calendar */ 199 int flag_julian_day = 0; /* user wants the Julian day 200 * numbers */ 201 int flag_orthodox = 0; /* use wants Orthodox easter */ 202 int flag_easter = 0; /* use wants easter date */ 203 char *cp; /* character pointer */ 204 char *flag_month = NULL; /* requested month as string */ 205 const char *locale; /* locale to get country code */ 206 char tbuf[1024], cbuf[512], *b; 207 time_t t; 208 struct tm *tm1; 209 210 term_se = term_so = NULL; 211 today = 0; 212 if (isatty(STDOUT_FILENO) && tgetent(tbuf, NULL) == 1) { 213 date dt; /* handy date */ 214 215 b = cbuf; 216 term_so = tgetstr("so", &b); 217 term_se = tgetstr("se", &b); 218 t = time(NULL); 219 tm1 = localtime(&t); 220 dt.y = tm1->tm_year + 1900; 221 dt.m = tm1->tm_mon + 1; 222 dt.d = tm1->tm_mday; 223 224 today = sndaysb(&dt); 225 } 226 227 /* 228 * Use locale to determine the country code, 229 * and use the country code to determine the default 230 * switchdate and date format from the switches table. 231 */ 232 if (setlocale(LC_ALL, "") == NULL) 233 warn("setlocale"); 234 locale = setlocale(LC_TIME, NULL); 235 if (locale == NULL || 236 strcmp(locale, "C") == 0 || 237 strcmp(locale, "POSIX") == 0 || 238 strcmp(locale, "ASCII") == 0 || 239 strcmp(locale, "US-ASCII") == 0) 240 locale = "_US"; 241 q = switches + sizeof(switches) / sizeof(struct djswitch); 242 for (p = switches; p != q; p++) 243 if ((cp = strstr(locale, p->cc)) != NULL && *(cp - 1) == '_') 244 break; 245 if (p == q) { 246 nswitch = ndaysj(&dftswitch->dt); 247 } else { 248 nswitch = ndaysj(&p->dt); 249 dftswitch = p; 250 } 251 252 253 /* 254 * Get the filename portion of argv[0] and set flag_backward if 255 * this program is called "cal". 256 */ 257 cp = strrchr(argv[0], '/'); 258 cp = (cp == NULL) ? argv[0] : cp + 1; 259 if (strcmp("cal", cp) == 0) 260 flag_backward = 1; 261 262 /* Set the switch date to United Kingdom if backwards compatible */ 263 if (flag_backward) 264 nswitchb = ndaysj(&ukswitch); 265 266 while ((ch = getopt(argc, argv, "Jehjm:ops:wy")) != -1) 267 switch (ch) { 268 case 'J': 269 if (flag_backward) 270 usage(); 271 nswitch = ndaysj(&never); 272 flag_julian_cal = 1; 273 break; 274 case 'h': 275 term_so = term_se = NULL; 276 break; 277 case 'e': 278 if (flag_backward) 279 usage(); 280 flag_easter = 1; 281 break; 282 case 'j': 283 flag_julian_day = 1; 284 break; 285 case 'm': 286 flag_month = optarg; 287 break; 288 case 'o': 289 if (flag_backward) 290 usage(); 291 flag_orthodox = 1; 292 flag_easter = 1; 293 break; 294 case 'p': 295 if (flag_backward) 296 usage(); 297 printcc(); 298 return (0); 299 break; 300 case 's': 301 if (flag_backward) 302 usage(); 303 q = switches + 304 sizeof(switches) / sizeof(struct djswitch); 305 for (p = switches; 306 p != q && strcmp(p->cc, optarg) != 0; p++) 307 ; 308 if (p == q) 309 errx(EX_USAGE, 310 "%s: invalid country code", optarg); 311 nswitch = ndaysj(&(p->dt)); 312 break; 313 case 'w': 314 if (flag_backward) 315 usage(); 316 flag_weeks = 1; 317 break; 318 case 'y': 319 flag_hole_year = 1; 320 break; 321 default: 322 usage(); 323 } 324 325 argc -= optind; 326 argv += optind; 327 328 switch (argc) { 329 case 2: 330 if (flag_easter) 331 usage(); 332 flag_month = *argv++; 333 /* FALLTHROUGH */ 334 case 1: 335 y = atoi(*argv++); 336 if (y < 1 || y > 9999) 337 errx(EX_USAGE, "year %d not in range 1..9999", y); 338 break; 339 case 0: 340 { 341 time_t t; 342 struct tm *tm; 343 344 t = time(NULL); 345 tm = localtime(&t); 346 y = tm->tm_year + 1900; 347 m = tm->tm_mon + 1; 348 } 349 break; 350 default: 351 usage(); 352 } 353 354 if (flag_month != NULL) { 355 if (parsemonth(flag_month, &m, &y)) { 356 errx(EX_USAGE, 357 "%s is neither a month number (1..12) nor a name", 358 flag_month); 359 } 360 } 361 362 if (flag_easter) 363 printeaster(y, flag_julian_cal, flag_orthodox); 364 else if (argc == 1 || flag_hole_year) { 365 /* disable the highlight for now */ 366 today = 0; 367 if (flag_backward) 368 printyearb(y, flag_julian_day); 369 else 370 printyear(y, flag_julian_day); 371 } else 372 if (flag_backward) 373 printmonthb(y, m, flag_julian_day); 374 else 375 printmonth(y, m, flag_julian_day); 376 377 return (0); 378 } 379 380 static void 381 usage(void) 382 { 383 384 fputs( 385 "usage: cal [-hjy] [[month] year]\n" 386 " cal [-hj] [-m month] [year]\n" 387 " ncal [-hJjpwy] [-s country_code] [[month] year]\n" 388 " ncal [-hJeo] [year]\n", stderr); 389 exit(EX_USAGE); 390 } 391 392 /* print the assumed switches for all countries */ 393 void 394 printcc(void) 395 { 396 struct djswitch *p; 397 int n; /* number of lines to print */ 398 int m; /* offset from left to right table entry on the same line */ 399 400 #define FSTR "%c%s %-15s%4d-%02d-%02d" 401 #define DFLT(p) ((p) == dftswitch ? '*' : ' ') 402 #define FSTRARG(p) DFLT(p), (p)->cc, (p)->nm, (p)->dt.y, (p)->dt.m, (p)->dt.d 403 404 n = sizeof(switches) / sizeof(struct djswitch); 405 m = (n + 1) / 2; 406 n /= 2; 407 for (p = switches; p != switches + n; p++) 408 printf(FSTR" "FSTR"\n", FSTRARG(p), FSTRARG(p+m)); 409 if (m != n) 410 printf(FSTR"\n", FSTRARG(p)); 411 } 412 413 /* print the date of easter sunday */ 414 void 415 printeaster(int y, int julian, int orthodox) 416 { 417 date dt; 418 struct tm tm; 419 char buf[80]; 420 static int d_first = -1; 421 422 if (d_first < 0) 423 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 424 /* force orthodox easter for years before 1583 */ 425 if (y < 1583) 426 orthodox = 1; 427 428 if (orthodox) 429 if (julian) 430 easteroj(y, &dt); 431 else 432 easterog(y, &dt); 433 else 434 easterg(y, &dt); 435 436 memset(&tm, 0, sizeof(tm)); 437 tm.tm_year = dt.y - 1900; 438 tm.tm_mon = dt.m - 1; 439 tm.tm_mday = dt.d; 440 strftime(buf, sizeof(buf), d_first ? "%e %B %Y" : "%B %e %Y", &tm); 441 printf("%s\n", buf); 442 } 443 444 void 445 printmonth(int y, int m, int jd_flag) 446 { 447 struct monthlines month; 448 struct weekdays wds; 449 int i; 450 451 mkmonth(y, m - 1, jd_flag, &month); 452 mkweekdays(&wds); 453 printf(" %ls %d\n", month.name, y); 454 for (i = 0; i != 7; i++) 455 wprintf(L"%.2ls%s\n", wds.names[i], month.lines[i]); 456 if (flag_weeks) 457 printf(" %s\n", month.weeks); 458 } 459 460 void 461 printmonthb(int y, int m, int jd_flag) 462 { 463 struct monthlines month; 464 struct weekdays wds; 465 wchar_t s[MAX_WIDTH], t[MAX_WIDTH]; 466 int i; 467 int mw; 468 469 mkmonthb(y, m - 1, jd_flag, &month); 470 mkweekdays(&wds); 471 472 mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; 473 474 swprintf(s, MAX_WIDTH, L"%ls %d", month.name, y); 475 wprintf(L"%ls\n", wcenter(t, s, mw)); 476 477 if (jd_flag) 478 wprintf(L" %ls %ls %ls %ls %ls %ls %.2ls\n", 479 wds.names[6], wds.names[0], 480 wds.names[1], wds.names[2], wds.names[3], 481 wds.names[4], wds.names[5]); 482 else 483 wprintf(L"%ls%ls%ls%ls%ls%ls%.2ls\n", wds.names[6], 484 wds.names[0], wds.names[1], wds.names[2], wds.names[3], 485 wds.names[4], wds.names[5]); 486 487 for (i = 0; i != 6; i++) 488 printf("%s\n", month.lines[i]+1); 489 } 490 491 void 492 printyear(int y, int jd_flag) 493 { 494 struct monthlines year[12]; 495 struct weekdays wds; 496 char s[80], t[80]; 497 int i, j; 498 int mpl; 499 int mw; 500 501 for (i = 0; i != 12; i++) 502 mkmonth(y, i, jd_flag, year + i); 503 mkweekdays(&wds); 504 mpl = jd_flag ? 3 : 4; 505 mw = jd_flag ? MONTH_WIDTH_J : MONTH_WIDTH; 506 507 sprintf(s, "%d", y); 508 printf("%s\n", center(t, s, mpl * mw)); 509 510 for (j = 0; j != 12; j += mpl) { 511 wprintf(L" %-*ls%-*ls", 512 mw, year[j].name, 513 mw, year[j + 1].name); 514 if (mpl == 3) 515 printf("%ls\n", year[j + 2].name); 516 else 517 wprintf(L"%-*ls%ls\n", 518 mw, year[j + 2].name, 519 year[j + 3].name); 520 for (i = 0; i != 7; i++) { 521 wprintf(L"%.2ls%-*s%-*s", 522 wds.names[i], 523 mw, year[j].lines[i], 524 mw, year[j + 1].lines[i]); 525 if (mpl == 3) 526 printf("%s\n", year[j + 2].lines[i]); 527 else 528 printf("%-*s%s\n", 529 mw, year[j + 2].lines[i], 530 year[j + 3].lines[i]); 531 } 532 if (flag_weeks) { 533 if (mpl == 3) 534 printf(" %-*s%-*s%-s\n", 535 mw, year[j].weeks, 536 mw, year[j + 1].weeks, 537 year[j + 2].weeks); 538 else 539 printf(" %-*s%-*s%-*s%-s\n", 540 mw, year[j].weeks, 541 mw, year[j + 1].weeks, 542 mw, year[j + 2].weeks, 543 year[j + 3].weeks); 544 } 545 } 546 } 547 548 void 549 printyearb(int y, int jd_flag) 550 { 551 struct monthlines year[12]; 552 struct weekdays wds; 553 char s[80], t[80]; 554 wchar_t ws[80], wt[80]; 555 int i, j; 556 int mpl; 557 int mw; 558 559 for (i = 0; i != 12; i++) 560 mkmonthb(y, i, jd_flag, year + i); 561 mkweekdays(&wds); 562 mpl = jd_flag ? 2 : 3; 563 mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; 564 565 sprintf(s, "%d", y); 566 printf("%s\n\n", center(t, s, mw * mpl + mpl)); 567 568 for (j = 0; j != 12; j += mpl) { 569 wprintf(L"%-*ls ", mw, wcenter(ws, year[j].name, mw)); 570 if (mpl == 2) 571 printf("%ls\n", wcenter(ws, year[j + 1].name, mw)); 572 else 573 wprintf(L"%-*ls %ls\n", mw, 574 wcenter(ws, year[j + 1].name, mw), 575 wcenter(wt, year[j + 2].name, mw)); 576 577 if (mpl == 2) 578 wprintf(L" %ls %ls %ls %ls %ls %ls %ls " 579 " %ls %ls %ls %ls %ls %ls %.2ls\n", 580 wds.names[6], wds.names[0], wds.names[1], 581 wds.names[2], wds.names[3], wds.names[4], 582 wds.names[5], 583 wds.names[6], wds.names[0], wds.names[1], 584 wds.names[2], wds.names[3], wds.names[4], 585 wds.names[5]); 586 else 587 wprintf(L"%ls%ls%ls%ls%ls%ls%ls " 588 "%ls%ls%ls%ls%ls%ls%ls " 589 "%ls%ls%ls%ls%ls%ls%.2ls\n", 590 wds.names[6], wds.names[0], wds.names[1], 591 wds.names[2], wds.names[3], wds.names[4], 592 wds.names[5], 593 wds.names[6], wds.names[0], wds.names[1], 594 wds.names[2], wds.names[3], wds.names[4], 595 wds.names[5], 596 wds.names[6], wds.names[0], wds.names[1], 597 wds.names[2], wds.names[3], wds.names[4], 598 wds.names[5]); 599 for (i = 0; i != 6; i++) { 600 if (mpl == 2) 601 printf("%-*s %s\n", 602 mw, year[j].lines[i]+1, 603 year[j + 1].lines[i]+1); 604 else 605 printf("%-*s %-*s %s\n", 606 mw, year[j].lines[i]+1, 607 mw, year[j + 1].lines[i]+1, 608 year[j + 2].lines[i]+1); 609 610 } 611 } 612 } 613 614 void 615 mkmonth(int y, int m, int jd_flag, struct monthlines *mlines) 616 { 617 618 struct tm tm; /* for strftime printing local names of 619 * months */ 620 date dt; /* handy date */ 621 int dw; /* width of numbers */ 622 int first; /* first day of month */ 623 int firstm; /* first day of first week of month */ 624 int i, j, k, l; /* just indices */ 625 int last; /* the first day of next month */ 626 int jan1 = 0; /* the first day of this year */ 627 char *ds; /* pointer to day strings (daystr or 628 * jdaystr) */ 629 630 /* Set name of month. */ 631 memset(&tm, 0, sizeof(tm)); 632 tm.tm_mon = m; 633 wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]), 634 L"%OB", &tm); 635 mlines->name[0] = towupper(mlines->name[0]); 636 637 /* 638 * Set first and last to the day number of the first day of this 639 * month and the first day of next month respectively. Set jan1 to 640 * the day number of the first day of this year. 641 */ 642 first = firstday(y, m + 1); 643 if (m == 11) 644 last = firstday(y + 1, 1); 645 else 646 last = firstday(y, m + 2); 647 648 if (jd_flag) 649 jan1 = firstday(y, 1); 650 651 /* 652 * Set firstm to the day number of monday of the first week of 653 * this month. (This might be in the last month) 654 */ 655 firstm = first - weekday(first); 656 657 /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ 658 if (jd_flag) { 659 ds = jdaystr; 660 dw = 4; 661 } else { 662 ds = daystr; 663 dw = 3; 664 } 665 666 /* 667 * Fill the lines with day of month or day of year (julian day) 668 * line index: i, each line is one weekday. column index: j, each 669 * column is one day number. print column index: k. 670 */ 671 for (i = 0; i != 7; i++) { 672 l = 0; 673 for (j = firstm + i, k = 0; j < last; j += 7, k += dw) { 674 if (j == today && (term_so != NULL && term_se != NULL)) { 675 l = strlen(term_so); 676 if (jd_flag) 677 dt.d = j - jan1 + 1; 678 else 679 sdateb(j, &dt); 680 /* separator */ 681 mlines->lines[i][k] = ' '; 682 /* the actual text */ 683 memcpy(mlines->lines[i] + k + l, 684 ds + dt.d * dw, dw); 685 /* highlight on */ 686 memcpy(mlines->lines[i] + k + 1, term_so, l); 687 /* highlight off */ 688 memcpy(mlines->lines[i] + k + l + dw, term_se, 689 strlen(term_se)); 690 l = strlen(term_se) + strlen(term_so); 691 continue; 692 } 693 if (j >= first) { 694 if (jd_flag) 695 dt.d = j - jan1 + 1; 696 else 697 sdate(j, &dt); 698 memcpy(mlines->lines[i] + k + l, 699 ds + dt.d * dw, dw); 700 } else 701 memcpy(mlines->lines[i] + k + l, " ", dw); 702 } 703 mlines->lines[i][k + l] = '\0'; 704 705 } 706 707 /* fill the weeknumbers */ 708 if (flag_weeks) { 709 for (j = firstm, k = 0; j < last; k += dw, j += 7) 710 if (j <= nswitch) 711 memset(mlines->weeks + k, ' ', dw); 712 else 713 memcpy(mlines->weeks + k, 714 ds + week(j, &i)*dw, dw); 715 mlines->weeks[k] = '\0'; 716 } 717 } 718 719 void 720 mkmonthb(int y, int m, int jd_flag, struct monthlines *mlines) 721 { 722 723 struct tm tm; /* for strftime printing local names of 724 * months */ 725 date dt; /* handy date */ 726 int dw; /* width of numbers */ 727 int first; /* first day of month */ 728 int firsts; /* sunday of first week of month */ 729 int i, j, k, l; /* just indices */ 730 int jan1 = 0; /* the first day of this year */ 731 int last; /* the first day of next month */ 732 char *ds; /* pointer to day strings (daystr or 733 * jdaystr) */ 734 735 /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ 736 if (jd_flag) { 737 ds = jdaystr; 738 dw = 4; 739 } else { 740 ds = daystr; 741 dw = 3; 742 } 743 744 /* Set name of month centered */ 745 memset(&tm, 0, sizeof(tm)); 746 tm.tm_mon = m; 747 wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]), 748 L"%OB", &tm); 749 mlines->name[0] = towupper(mlines->name[0]); 750 751 /* 752 * Set first and last to the day number of the first day of this 753 * month and the first day of next month respectively. Set jan1 to 754 * the day number of Jan 1st of this year. 755 */ 756 dt.y = y; 757 dt.m = m + 1; 758 dt.d = 1; 759 first = sndaysb(&dt); 760 if (m == 11) { 761 dt.y = y + 1; 762 dt.m = 1; 763 dt.d = 1; 764 } else { 765 dt.y = y; 766 dt.m = m + 2; 767 dt.d = 1; 768 } 769 last = sndaysb(&dt); 770 771 if (jd_flag) { 772 dt.y = y; 773 dt.m = 1; 774 dt.d = 1; 775 jan1 = sndaysb(&dt); 776 } 777 778 /* 779 * Set firsts to the day number of sunday of the first week of 780 * this month. (This might be in the last month) 781 */ 782 firsts = first - (weekday(first)+1) % 7; 783 784 /* 785 * Fill the lines with day of month or day of year (Julian day) 786 * line index: i, each line is one week. column index: j, each 787 * column is one day number. print column index: k. 788 */ 789 for (i = 0; i != 6; i++) { 790 l = 0; 791 for (j = firsts + 7 * i, k = 0; j < last && k != dw * 7; 792 j++, k += dw) { 793 if (j == today && (term_so != NULL && term_se != NULL)) { 794 l = strlen(term_so); 795 if (jd_flag) 796 dt.d = j - jan1 + 1; 797 else 798 sdateb(j, &dt); 799 /* separator */ 800 mlines->lines[i][k] = ' '; 801 /* the actual text */ 802 memcpy(mlines->lines[i] + k + l, 803 ds + dt.d * dw, dw); 804 /* highlight on */ 805 memcpy(mlines->lines[i] + k + 1, term_so, l); 806 /* highlight off */ 807 memcpy(mlines->lines[i] + k + l + dw, term_se, 808 strlen(term_se)); 809 l = strlen(term_se) + strlen(term_so); 810 continue; 811 } 812 if (j >= first) { 813 if (jd_flag) 814 dt.d = j - jan1 + 1; 815 else 816 sdateb(j, &dt); 817 memcpy(mlines->lines[i] + k + l, 818 ds + dt.d * dw, dw); 819 } else 820 memcpy(mlines->lines[i] + k + l, " ", dw); 821 } 822 if (k == 0) 823 mlines->lines[i][1] = '\0'; 824 else 825 mlines->lines[i][k + l] = '\0'; 826 } 827 } 828 829 /* Put the local names of weekdays into the wds */ 830 void 831 mkweekdays(struct weekdays *wds) 832 { 833 int i, len; 834 struct tm tm; 835 wchar_t buf[20]; 836 837 memset(&tm, 0, sizeof(tm)); 838 839 for (i = 0; i != 7; i++) { 840 tm.tm_wday = (i+1) % 7; 841 wcsftime(buf, sizeof(buf), L"%a", &tm); 842 len = wcslen(buf); 843 if (len > 2) 844 len = 2; 845 wcscpy(wds->names[i], L" "); 846 wcsncpy(wds->names[i] + 2 - len, buf, len); 847 } 848 } 849 850 /* 851 * Compute the day number of the first 852 * existing date after the first day in month. 853 * (the first day in month and even the month might not exist!) 854 */ 855 int 856 firstday(int y, int m) 857 { 858 date dt; 859 int nd; 860 861 dt.y = y; 862 dt.m = m; 863 dt.d = 1; 864 nd = sndays(&dt); 865 for (;;) { 866 sdate(nd, &dt); 867 if ((dt.m >= m && dt.y == y) || dt.y > y) 868 return (nd); 869 else 870 nd++; 871 } 872 /* NEVER REACHED */ 873 } 874 875 /* 876 * Compute the number of days from date, obey the local switch from 877 * Julian to Gregorian if specified by the user. 878 */ 879 int 880 sndays(struct date *d) 881 { 882 883 if (nswitch != 0) 884 if (nswitch < ndaysj(d)) 885 return (ndaysg(d)); 886 else 887 return (ndaysj(d)); 888 else 889 return ndaysg(d); 890 } 891 892 /* 893 * Compute the number of days from date, obey the switch from 894 * Julian to Gregorian as used by UK and her colonies. 895 */ 896 int 897 sndaysb(struct date *d) 898 { 899 900 if (nswitchb < ndaysj(d)) 901 return (ndaysg(d)); 902 else 903 return (ndaysj(d)); 904 } 905 906 /* Inverse of sndays */ 907 struct date * 908 sdate(int nd, struct date *d) 909 { 910 911 if (nswitch < nd) 912 return (gdate(nd, d)); 913 else 914 return (jdate(nd, d)); 915 } 916 917 /* Inverse of sndaysb */ 918 struct date * 919 sdateb(int nd, struct date *d) 920 { 921 922 if (nswitchb < nd) 923 return (gdate(nd, d)); 924 else 925 return (jdate(nd, d)); 926 } 927 928 /* Center string t in string s of length w by putting enough leading blanks */ 929 char * 930 center(char *s, char *t, int w) 931 { 932 char blanks[80]; 933 934 memset(blanks, ' ', sizeof(blanks)); 935 sprintf(s, "%.*s%s", (int)(w - strlen(t)) / 2, blanks, t); 936 return (s); 937 } 938 939 /* Center string t in string s of length w by putting enough leading blanks */ 940 wchar_t * 941 wcenter(wchar_t *s, wchar_t *t, int w) 942 { 943 char blanks[80]; 944 945 memset(blanks, ' ', sizeof(blanks)); 946 swprintf(s, MAX_WIDTH, L"%.*s%ls", (int)(w - wcslen(t)) / 2, blanks, t); 947 return (s); 948 } 949 950 int 951 parsemonth(const char *s, int *m, int *y) 952 { 953 int nm, ny; 954 char *cp; 955 struct tm tm; 956 957 nm = (int)strtol(s, &cp, 10); 958 if (cp != s) { 959 ny = *y; 960 if (*cp == '\0') { 961 ; /* no special action */ 962 } else if (*cp == 'f' || *cp == 'F') { 963 if (nm <= *m) 964 ny++; 965 } else if (*cp == 'p' || *cp == 'P') { 966 if (nm >= *m) 967 ny--; 968 } else 969 return (1); 970 if (nm < 1 || nm > 12) 971 return 1; 972 *m = nm; 973 *y = ny; 974 return (0); 975 } 976 if (strptime(s, "%B", &tm) != NULL || strptime(s, "%b", &tm) != NULL) { 977 *m = tm.tm_mon + 1; 978 return (0); 979 } 980 return (1); 981 } 982