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 * $FreeBSD: src/usr.bin/ncal/ncal.c,v 1.11.2.3 2002/10/23 08:10:00 roam Exp $ 27 * $DragonFly: src/usr.bin/ncal/ncal.c,v 1.2 2003/06/17 04:29:29 dillon Exp $ 28 */ 29 30 #include <calendar.h> 31 #include <ctype.h> 32 #include <err.h> 33 #include <langinfo.h> 34 #include <locale.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <sysexits.h> 39 #include <time.h> 40 #include <unistd.h> 41 #include <term.h> 42 #undef lines /* term.h defines this */ 43 44 /* Width of one month with backward compatibility */ 45 #define MONTH_WIDTH_B_J 27 46 #define MONTH_WIDTH_B 20 47 48 #define MONTH_WIDTH_J 24 49 #define MONTH_WIDTH 18 50 51 #define MAX_WIDTH 64 52 53 typedef struct date date; 54 55 struct monthlines { 56 char name[MAX_WIDTH + 1]; 57 char lines[7][MAX_WIDTH + 1]; 58 char weeks[MAX_WIDTH + 1]; 59 }; 60 61 struct weekdays { 62 char names[7][4]; 63 }; 64 65 /* The switches from Julian to Gregorian in some countries */ 66 static struct djswitch { 67 char *cc; /* Country code according to ISO 3166 */ 68 char *nm; /* Name of country */ 69 date dt; /* Last day of Julian calendar */ 70 } switches[] = { 71 {"AL", "Albania", {1912, 11, 30}}, 72 {"AT", "Austria", {1583, 10, 5}}, 73 {"AU", "Australia", {1752, 9, 2}}, 74 {"BE", "Belgium", {1582, 12, 14}}, 75 {"BG", "Bulgaria", {1916, 3, 18}}, 76 {"CA", "Canada", {1752, 9, 2}}, 77 {"CH", "Switzerland", {1655, 2, 28}}, 78 {"CN", "China", {1911, 12, 18}}, 79 {"CZ", "Czech Republic",{1584, 1, 6}}, 80 {"DE", "Germany", {1700, 2, 18}}, 81 {"DK", "Denmark", {1700, 2, 18}}, 82 {"ES", "Spain", {1582, 10, 4}}, 83 {"FI", "Finland", {1753, 2, 17}}, 84 {"FR", "France", {1582, 12, 9}}, 85 {"GB", "United Kingdom",{1752, 9, 2}}, 86 {"GR", "Greece", {1924, 3, 9}}, 87 {"HU", "Hungary", {1587, 10, 21}}, 88 {"IS", "Iceland", {1700, 11, 16}}, 89 {"IT", "Italy", {1582, 10, 4}}, 90 {"JP", "Japan", {1918, 12, 18}}, 91 {"LI", "Lithuania", {1918, 2, 1}}, 92 {"LN", "Latin", {9999, 05, 31}}, 93 {"LU", "Luxembourg", {1582, 12, 14}}, 94 {"LV", "Latvia", {1918, 2, 1}}, 95 {"NL", "Netherlands", {1582, 12, 14}}, 96 {"NO", "Norway", {1700, 2, 18}}, 97 {"PL", "Poland", {1582, 10, 4}}, 98 {"PT", "Portugal", {1582, 10, 4}}, 99 {"RO", "Romania", {1919, 3, 31}}, 100 {"RU", "Russia", {1918, 1, 31}}, 101 {"SI", "Slovenia", {1919, 3, 4}}, 102 {"SW", "Sweden", {1753, 2, 17}}, 103 {"TR", "Turkey", {1926, 12, 18}}, 104 {"US", "United States", {1752, 9, 2}}, 105 {"YU", "Yugoslavia", {1919, 3, 4}} 106 }; 107 108 struct djswitch *dftswitch = 109 switches + sizeof(switches) / sizeof(struct djswitch) - 2; 110 /* default switch (should be "US") */ 111 112 /* Table used to print day of month and week numbers */ 113 char daystr[] = " 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15" 114 " 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31" 115 " 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47" 116 " 48 49 50 51 52 53"; 117 118 /* Table used to print day of year and week numbers */ 119 char jdaystr[] = " 1 2 3 4 5 6 7 8 9" 120 " 10 11 12 13 14 15 16 17 18 19" 121 " 20 21 22 23 24 25 26 27 28 29" 122 " 30 31 32 33 34 35 36 37 38 39" 123 " 40 41 42 43 44 45 46 47 48 49" 124 " 50 51 52 53 54 55 56 57 58 59" 125 " 60 61 62 63 64 65 66 67 68 69" 126 " 70 71 72 73 74 75 76 77 78 79" 127 " 80 81 82 83 84 85 86 87 88 89" 128 " 90 91 92 93 94 95 96 97 98 99" 129 " 100 101 102 103 104 105 106 107 108 109" 130 " 110 111 112 113 114 115 116 117 118 119" 131 " 120 121 122 123 124 125 126 127 128 129" 132 " 130 131 132 133 134 135 136 137 138 139" 133 " 140 141 142 143 144 145 146 147 148 149" 134 " 150 151 152 153 154 155 156 157 158 159" 135 " 160 161 162 163 164 165 166 167 168 169" 136 " 170 171 172 173 174 175 176 177 178 179" 137 " 180 181 182 183 184 185 186 187 188 189" 138 " 190 191 192 193 194 195 196 197 198 199" 139 " 200 201 202 203 204 205 206 207 208 209" 140 " 210 211 212 213 214 215 216 217 218 219" 141 " 220 221 222 223 224 225 226 227 228 229" 142 " 230 231 232 233 234 235 236 237 238 239" 143 " 240 241 242 243 244 245 246 247 248 249" 144 " 250 251 252 253 254 255 256 257 258 259" 145 " 260 261 262 263 264 265 266 267 268 269" 146 " 270 271 272 273 274 275 276 277 278 279" 147 " 280 281 282 283 284 285 286 287 288 289" 148 " 290 291 292 293 294 295 296 297 298 299" 149 " 300 301 302 303 304 305 306 307 308 309" 150 " 310 311 312 313 314 315 316 317 318 319" 151 " 320 321 322 323 324 325 326 327 328 329" 152 " 330 331 332 333 334 335 336 337 338 339" 153 " 340 341 342 343 344 345 346 347 348 349" 154 " 350 351 352 353 354 355 356 357 358 359" 155 " 360 361 362 363 364 365 366"; 156 157 int flag_weeks; /* user wants number of week */ 158 int nswitch; /* user defined switch date */ 159 int nswitchb; /* switch date for backward compatibility */ 160 const char *term_so, *term_se; 161 int today; 162 163 char *center(char *s, char *t, int w); 164 void mkmonth(int year, int month, int jd_flag, struct monthlines * monthl); 165 void mkmonthb(int year, int month, int jd_flag, struct monthlines * monthl); 166 void mkweekdays(struct weekdays * wds); 167 int parsemonth(const char *s); 168 void printcc(void); 169 void printeaster(int year, int julian, int orthodox); 170 void printmonth(int year, int month, int jd_flag); 171 void printmonthb(int year, int month, int jd_flag); 172 void printyear(int year, int jd_flag); 173 void printyearb(int year, int jd_flag); 174 int firstday(int y, int m); 175 date *sdate(int ndays, struct date * d); 176 date *sdateb(int ndays, struct date * d); 177 int sndays(struct date * d); 178 int sndaysb(struct date * d); 179 static void usage(void); 180 int weekdayb(int nd); 181 182 int 183 main(int argc, char *argv[]) 184 { 185 struct djswitch *p, *q; /* to search user defined switch date */ 186 date never = {10000, 1, 1}; /* outside valid range of dates */ 187 date ukswitch = {1752, 9, 2};/* switch date for Great Britain */ 188 date dt; /* today as date */ 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 char *locale; /* locale to get country code */ 202 char tbuf[1024], cbuf[512], *b; 203 time_t t; 204 struct tm *tm1; 205 206 term_se = term_so = NULL; 207 today = 0; 208 t = time(NULL); 209 tm1 = localtime(&t); 210 y = dt.y = tm1->tm_year + 1900; 211 m = dt.m = tm1->tm_mon + 1; 212 dt.d = tm1->tm_mday; 213 if (isatty(STDOUT_FILENO) && tgetent(tbuf, NULL) == 1) { 214 b = cbuf; 215 term_so = tgetstr("so", &b); 216 term_se = tgetstr("se", &b); 217 today = sndaysb(&dt); 218 } 219 220 /* 221 * Use locale to determine the country code, 222 * and use the country code to determine the default 223 * switchdate and date format from the switches table. 224 */ 225 if ((locale = setlocale(LC_ALL, "")) == NULL) 226 warn("setlocale"); 227 locale = setlocale(LC_TIME, NULL); 228 if (locale == NULL || 229 strcmp(locale, "C") == 0 || 230 strcmp(locale, "POSIX") == 0 || 231 strcmp(locale, "ASCII") == 0 || 232 strcmp(locale, "US-ASCII") == 0) 233 locale = "_US"; 234 q = switches + sizeof(switches) / sizeof(struct djswitch); 235 for (p = switches; p != q; p++) 236 if ((cp = strstr(locale, p->cc)) != NULL && *(cp - 1) == '_') 237 break; 238 if (p == q) { 239 nswitch = ndaysj(&dftswitch->dt); 240 } else { 241 nswitch = ndaysj(&p->dt); 242 dftswitch = p; 243 } 244 245 246 /* 247 * Get the filename portion of argv[0] and set flag_backward if 248 * this program is called "cal". 249 */ 250 for (cp = argv[0]; *cp; cp++) 251 ; 252 while (cp >= argv[0] && *cp != '/') 253 cp--; 254 if (strcmp("cal", ++cp) == 0) 255 flag_backward = 1; 256 257 /* Set the switch date to United Kingdom if backwards compatible */ 258 if (flag_backward) 259 nswitchb = ndaysj(&ukswitch); 260 261 while ((ch = getopt(argc, argv, "Jejm:ops:wy")) != -1) 262 switch (ch) { 263 case 'J': 264 if (flag_backward) 265 usage(); 266 nswitch = ndaysj(&never); 267 flag_julian_cal = 1; 268 break; 269 case 'e': 270 if (flag_backward) 271 usage(); 272 flag_easter = 1; 273 break; 274 case 'j': 275 flag_julian_day = 1; 276 break; 277 case 'm': 278 flag_month = optarg; 279 break; 280 case 'o': 281 if (flag_backward) 282 usage(); 283 flag_orthodox = 1; 284 flag_easter = 1; 285 break; 286 case 'p': 287 if (flag_backward) 288 usage(); 289 printcc(); 290 return (0); 291 break; 292 case 's': 293 if (flag_backward) 294 usage(); 295 q = switches + 296 sizeof(switches) / sizeof(struct djswitch); 297 for (p = switches; 298 p != q && strcmp(p->cc, optarg) != 0; p++) 299 ; 300 if (p == q) 301 errx(EX_USAGE, 302 "%s: invalid country code", optarg); 303 nswitch = ndaysj(&(p->dt)); 304 break; 305 case 'w': 306 if (flag_backward) 307 usage(); 308 flag_weeks = 1; 309 break; 310 case 'y': 311 flag_hole_year = 1; 312 break; 313 default: 314 usage(); 315 } 316 317 argc -= optind; 318 argv += optind; 319 320 switch (argc) { 321 case 2: 322 if (flag_easter) 323 usage(); 324 flag_month = *argv++; 325 /* FALLTHROUGH */ 326 case 1: 327 if (strcmp(*argv, ".") == 0) 328 /* year was already set above */ 329 argv++; 330 else 331 y = atoi(*argv++); 332 if (y < 1 || y > 9999) 333 errx(EX_USAGE, "year %d not in range 1..9999", y); 334 break; 335 case 0: 336 break; 337 default: 338 usage(); 339 } 340 341 if (flag_month != NULL) { 342 m = parsemonth(flag_month); 343 if (m < 1 || m > 12) 344 errx(EX_USAGE, 345 "%s is neither a month number (1..12) nor a name", 346 flag_month); 347 } 348 349 if (flag_easter) 350 printeaster(y, flag_julian_cal, flag_orthodox); 351 else if (argc == 1 || flag_hole_year) { 352 if (flag_backward) 353 printyearb(y, flag_julian_day); 354 else 355 printyear(y, flag_julian_day); 356 } else 357 if (flag_backward) 358 printmonthb(y, m, flag_julian_day); 359 else 360 printmonth(y, m, flag_julian_day); 361 362 return (0); 363 } 364 365 static void 366 usage(void) 367 { 368 369 fprintf(stderr, "%s\n%s\n%s\n", 370 "usage: cal [-jy] [[month] year]", 371 " ncal [-Jjpwy] [-s country_code] [[month] year]", 372 " ncal [-Jeo] [year]"); 373 exit(EX_USAGE); 374 } 375 376 /* print the assumed switches for all countries */ 377 void 378 printcc(void) 379 { 380 struct djswitch *p; 381 int n; /* number of lines to print */ 382 int m; /* offset from left to right table entry on the same line */ 383 384 #define FSTR "%c%s %-15s%4d-%02d-%02d" 385 #define DFLT(p) ((p) == dftswitch ? '*' : ' ') 386 #define FSTRARG(p) DFLT(p), (p)->cc, (p)->nm, (p)->dt.y, (p)->dt.m, (p)->dt.d 387 388 n = sizeof(switches) / sizeof(struct djswitch); 389 m = (n + 1) / 2; 390 n /= 2; 391 for (p = switches; p != switches + n; p++) 392 printf(FSTR" "FSTR"\n", FSTRARG(p), FSTRARG(p+m)); 393 if (m != n) 394 printf(FSTR"\n", FSTRARG(p)); 395 } 396 397 /* print the date of easter sunday */ 398 void 399 printeaster(int y, int julian, int orthodox) 400 { 401 date dt; 402 struct tm tm; 403 char buf[80]; 404 static int d_first = -1; 405 406 if (d_first < 0) 407 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 408 /* force orthodox easter for years before 1583 */ 409 if (y < 1583) 410 orthodox = 1; 411 412 if (orthodox) 413 if (julian) 414 easteroj(y, &dt); 415 else 416 easterog(y, &dt); 417 else 418 easterg(y, &dt); 419 420 memset(&tm, 0, sizeof(tm)); 421 tm.tm_year = dt.y - 1900; 422 tm.tm_mon = dt.m - 1; 423 tm.tm_mday = dt.d; 424 strftime(buf, sizeof(buf), d_first ? "%e %B %Y" : "%B %e %Y", &tm); 425 printf("%s\n", buf); 426 } 427 428 void 429 printmonth(int y, int m, int jd_flag) 430 { 431 struct monthlines month; 432 struct weekdays wds; 433 int i; 434 435 mkmonth(y, m - 1, jd_flag, &month); 436 mkweekdays(&wds); 437 printf(" %s %d\n", month.name, y); 438 for (i = 0; i != 7; i++) 439 printf("%.2s%s\n", wds.names[i], month.lines[i]); 440 if (flag_weeks) 441 printf(" %s\n", month.weeks); 442 } 443 444 void 445 printmonthb(int y, int m, int jd_flag) 446 { 447 struct monthlines month; 448 struct weekdays wds; 449 char s[MAX_WIDTH], t[MAX_WIDTH]; 450 int i; 451 int mw; 452 453 mkmonthb(y, m - 1, jd_flag, &month); 454 mkweekdays(&wds); 455 456 mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; 457 458 sprintf(s, "%s %d", month.name, y); 459 printf("%s\n", center(t, s, mw)); 460 461 if (jd_flag) 462 printf(" %s %s %s %s %s %s %.2s\n", wds.names[6], wds.names[0], 463 wds.names[1], wds.names[2], wds.names[3], 464 wds.names[4], wds.names[5]); 465 else 466 printf("%s%s%s%s%s%s%.2s\n", wds.names[6], wds.names[0], 467 wds.names[1], wds.names[2], wds.names[3], 468 wds.names[4], wds.names[5]); 469 470 for (i = 0; i != 6; i++) 471 printf("%s\n", month.lines[i]+1); 472 } 473 474 void 475 printyear(int y, int jd_flag) 476 { 477 struct monthlines year[12]; 478 struct weekdays wds; 479 char s[80], t[80]; 480 int i, j; 481 int mpl; 482 int mw; 483 484 for (i = 0; i != 12; i++) 485 mkmonth(y, i, jd_flag, year + i); 486 mkweekdays(&wds); 487 mpl = jd_flag ? 3 : 4; 488 mw = jd_flag ? MONTH_WIDTH_J : MONTH_WIDTH; 489 490 sprintf(s, "%d", y); 491 printf("%s\n", center(t, s, mpl * mw)); 492 493 for (j = 0; j != 12; j += mpl) { 494 printf(" %-*s%-*s", 495 mw, year[j].name, 496 mw, year[j + 1].name); 497 if (mpl == 3) 498 printf("%s\n", year[j + 2].name); 499 else 500 printf("%-*s%s\n", 501 mw, year[j + 2].name, 502 year[j + 3].name); 503 for (i = 0; i != 7; i++) { 504 printf("%.2s%s%s", 505 wds.names[i], 506 year[j].lines[i], 507 year[j + 1].lines[i]); 508 if (mpl == 3) 509 printf("%s\n", year[j + 2].lines[i]); 510 else 511 printf("%s%s\n", 512 year[j + 2].lines[i], 513 year[j + 3].lines[i]); 514 } 515 if (flag_weeks) { 516 if (mpl == 3) 517 printf(" %s%s%-s\n", 518 year[j].weeks, 519 year[j + 1].weeks, 520 year[j + 2].weeks); 521 else 522 printf(" %s%s%s%-s\n", 523 year[j].weeks, 524 year[j + 1].weeks, 525 year[j + 2].weeks, 526 year[j + 3].weeks); 527 } 528 } 529 } 530 531 void 532 printyearb(int y, int jd_flag) 533 { 534 struct monthlines year[12]; 535 struct weekdays wds; 536 char s[80], t[80]; 537 int i, j; 538 int mpl; 539 int mw; 540 541 for (i = 0; i != 12; i++) 542 mkmonthb(y, i, jd_flag, year + i); 543 mkweekdays(&wds); 544 mpl = jd_flag ? 2 : 3; 545 mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; 546 547 sprintf(s, "%d", y); 548 printf("%s\n\n", center(t, s, mw * mpl + mpl)); 549 550 for (j = 0; j != 12; j += mpl) { 551 printf("%-*s ", mw, center(s, year[j].name, mw)); 552 if (mpl == 2) 553 printf("%s\n", center(s, year[j + 1].name, mw)); 554 else 555 printf("%-*s %s\n", mw, 556 center(s, year[j + 1].name, mw), 557 center(t, year[j + 2].name, mw)); 558 559 if (mpl == 2) 560 printf(" %s %s %s %s %s %s %s " 561 " %s %s %s %s %s %s %.2s\n", 562 wds.names[6], wds.names[0], wds.names[1], 563 wds.names[2], wds.names[3], wds.names[4], 564 wds.names[5], 565 wds.names[6], wds.names[0], wds.names[1], 566 wds.names[2], wds.names[3], wds.names[4], 567 wds.names[5]); 568 else 569 printf("%s%s%s%s%s%s%s " 570 "%s%s%s%s%s%s%s " 571 "%s%s%s%s%s%s%.2s\n", 572 wds.names[6], wds.names[0], wds.names[1], 573 wds.names[2], wds.names[3], wds.names[4], 574 wds.names[5], 575 wds.names[6], wds.names[0], wds.names[1], 576 wds.names[2], wds.names[3], wds.names[4], 577 wds.names[5], 578 wds.names[6], wds.names[0], wds.names[1], 579 wds.names[2], wds.names[3], wds.names[4], 580 wds.names[5]); 581 for (i = 0; i != 6; i++) { 582 if (mpl == 2) 583 printf("%s %s\n", 584 year[j].lines[i]+1, 585 year[j + 1].lines[i]+1); 586 else 587 printf("%s %s %s\n", 588 year[j].lines[i]+1, 589 year[j + 1].lines[i]+1, 590 year[j + 2].lines[i]+1); 591 592 } 593 } 594 } 595 596 void 597 mkmonth(int y, int m, int jd_flag, struct monthlines *mlines) 598 { 599 600 struct tm tm; /* for strftime printing local names of 601 * months */ 602 date dt; /* handy date */ 603 int dw; /* width of numbers */ 604 int first; /* first day of month */ 605 int firstm; /* first day of first week of month */ 606 int i, j, k, l; /* just indices */ 607 int last; /* the first day of next month */ 608 int lastm; /* first day of first week of next month */ 609 int jan1 = 0; /* the first day of this year */ 610 char *ds; /* pointer to day strings (daystr or 611 * jdaystr) */ 612 613 /* Set name of month. */ 614 memset(&tm, 0, sizeof(tm)); 615 tm.tm_mon = m; 616 strftime(mlines->name, sizeof(mlines->name), "%OB", &tm); 617 mlines->name[0] = toupper((unsigned char)mlines->name[0]); 618 619 /* 620 * Set first and last to the day number of the first day of this 621 * month and the first day of next month respectively. Set jan1 to 622 * the day number of the first day of this year. 623 */ 624 first = firstday(y, m + 1); 625 if (m == 11) 626 last = firstday(y + 1, 1); 627 else 628 last = firstday(y, m + 2); 629 630 if (jd_flag) 631 jan1 = firstday(y, 1); 632 633 /* 634 * Set firstm to the day number of monday of the first week of 635 * this month. (This might be in the last month) 636 * Set lastm to the day number of monday of the first week of 637 * the next month. Our canvas spans [firstm, lastm). 638 */ 639 firstm = first - weekday(first); 640 lastm = last + 7 - weekday(last); 641 642 /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ 643 if (jd_flag) { 644 ds = jdaystr; 645 dw = 4; 646 } else { 647 ds = daystr; 648 dw = 3; 649 } 650 651 /* 652 * Fill the lines with day of month or day of year (julian day) 653 * line index: i, each line is one weekday. column index: j, each 654 * column is one day number. print column index: k. 655 */ 656 for (i = 0; i != 7; i++) { 657 l = 0; 658 for (j = firstm + i, k = 0; j < lastm; j += 7, k += dw) { 659 if (j >= first && j < last) { 660 if (jd_flag) 661 dt.d = j - jan1 + 1; 662 else 663 sdate(j, &dt); 664 if (j == today && (term_so != NULL && term_se != NULL)) { 665 l = strlen(term_so); 666 /* separator */ 667 mlines->lines[i][k] = ' '; 668 } 669 /* the actual text */ 670 memcpy(mlines->lines[i] + k + l, 671 ds + dt.d * dw, dw); 672 if (j == today && (term_so != NULL && term_se != NULL)) { 673 /* highlight on */ 674 memcpy(mlines->lines[i] + k + 1, term_so, l); 675 /* highlight off */ 676 memcpy(mlines->lines[i] + k + l + dw, term_se, 677 strlen(term_se)); 678 l = strlen(term_se) + strlen(term_so); 679 } 680 } else 681 memcpy(mlines->lines[i] + k + l, " ", dw); 682 } 683 mlines->lines[i][k + l] = '\0'; 684 685 } 686 687 /* fill the weeknumbers */ 688 if (flag_weeks) { 689 for (j = firstm, k = 0; j < lastm; k += dw, j += 7) 690 if (j <= nswitch || j >= last) 691 memset(mlines->weeks + k, ' ', dw); 692 else 693 memcpy(mlines->weeks + k, 694 ds + week(j, &i)*dw, dw); 695 mlines->weeks[k] = '\0'; 696 } 697 } 698 699 void 700 mkmonthb(int y, int m, int jd_flag, struct monthlines *mlines) 701 { 702 703 struct tm tm; /* for strftime printing local names of 704 * months */ 705 date dt; /* handy date */ 706 int dw; /* width of numbers */ 707 int first; /* first day of month */ 708 int firsts; /* sunday of first week of month */ 709 int i, j, k, l; /* just indices */ 710 int jan1 = 0; /* the first day of this year */ 711 int last; /* the first day of next month */ 712 char *ds; /* pointer to day strings (daystr or 713 * jdaystr) */ 714 715 /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ 716 if (jd_flag) { 717 ds = jdaystr; 718 dw = 4; 719 } else { 720 ds = daystr; 721 dw = 3; 722 } 723 724 /* Set name of month centered */ 725 memset(&tm, 0, sizeof(tm)); 726 tm.tm_mon = m; 727 strftime(mlines->name, sizeof(mlines->name), "%OB", &tm); 728 mlines->name[0] = toupper((unsigned char)mlines->name[0]); 729 730 /* 731 * Set first and last to the day number of the first day of this 732 * month and the first day of next month respectively. Set jan1 to 733 * the day number of Jan 1st of this year. 734 */ 735 dt.y = y; 736 dt.m = m + 1; 737 dt.d = 1; 738 first = sndaysb(&dt); 739 if (m == 11) { 740 dt.y = y + 1; 741 dt.m = 1; 742 dt.d = 1; 743 } else { 744 dt.y = y; 745 dt.m = m + 2; 746 dt.d = 1; 747 } 748 last = sndaysb(&dt); 749 750 if (jd_flag) { 751 dt.y = y; 752 dt.m = 1; 753 dt.d = 1; 754 jan1 = sndaysb(&dt); 755 } 756 757 /* 758 * Set firsts to the day number of sunday of the first week of 759 * this month. (This might be in the last month) 760 */ 761 firsts = first - (weekday(first)+1) % 7; 762 763 /* 764 * Fill the lines with day of month or day of year (Julian day) 765 * line index: i, each line is one week. column index: j, each 766 * column is one day number. print column index: k. 767 */ 768 for (i = 0; i != 6; i++) { 769 l = 0; 770 for (j = firsts + 7 * i, k = 0; k != dw * 7; 771 j++, k += dw) { 772 if (j >= first && j < last) { 773 if (jd_flag) 774 dt.d = j - jan1 + 1; 775 else 776 sdateb(j, &dt); 777 if (j == today && (term_so != NULL && term_se != NULL)) { 778 l = strlen(term_so); 779 /* separator */ 780 mlines->lines[i][k] = ' '; 781 } 782 /* the actual text */ 783 memcpy(mlines->lines[i] + k + l, 784 ds + dt.d * dw, dw); 785 if (j == today && (term_so != NULL && term_se != NULL)) { 786 /* highlight on */ 787 memcpy(mlines->lines[i] + k + 1, term_so, l); 788 /* highlight off */ 789 memcpy(mlines->lines[i] + k + l + dw, term_se, 790 strlen(term_se)); 791 l = strlen(term_se) + strlen(term_so); 792 } 793 } else 794 memcpy(mlines->lines[i] + k + l, " ", dw); 795 } 796 if (k == 0) 797 mlines->lines[i][1] = '\0'; 798 else 799 mlines->lines[i][k + l] = '\0'; 800 } 801 } 802 803 /* Put the local names of weekdays into the wds */ 804 void 805 mkweekdays(struct weekdays *wds) 806 { 807 int i, len; 808 struct tm tm; 809 char buf[20]; 810 811 memset(&tm, 0, sizeof(tm)); 812 813 for (i = 0; i != 7; i++) { 814 tm.tm_wday = (i+1) % 7; 815 strftime(buf, sizeof(buf), "%a", &tm); 816 len = strlen(buf); 817 if (len > 2) 818 len = 2; 819 strcpy(wds->names[i], " "); 820 strncpy(wds->names[i] + 2 - len, buf, len); 821 } 822 } 823 824 /* 825 * Compute the day number of the first 826 * existing date after the first day in month. 827 * (the first day in month and even the month might not exist!) 828 */ 829 int 830 firstday(int y, int m) 831 { 832 date dt; 833 int nd; 834 835 dt.y = y; 836 dt.m = m; 837 dt.d = 1; 838 nd = sndays(&dt); 839 for (;;) { 840 sdate(nd, &dt); 841 if ((dt.m >= m && dt.y == y) || dt.y > y) 842 return (nd); 843 else 844 nd++; 845 } 846 /* NEVER REACHED */ 847 } 848 849 /* 850 * Compute the number of days from date, obey the local switch from 851 * Julian to Gregorian if specified by the user. 852 */ 853 int 854 sndays(struct date *d) 855 { 856 857 if (nswitch != 0) 858 if (nswitch < ndaysj(d)) 859 return (ndaysg(d)); 860 else 861 return (ndaysj(d)); 862 else 863 return ndaysg(d); 864 } 865 866 /* 867 * Compute the number of days from date, obey the switch from 868 * Julian to Gregorian as used by UK and her colonies. 869 */ 870 int 871 sndaysb(struct date *d) 872 { 873 874 if (nswitchb < ndaysj(d)) 875 return (ndaysg(d)); 876 else 877 return (ndaysj(d)); 878 } 879 880 /* Inverse of sndays */ 881 struct date * 882 sdate(int nd, struct date *d) 883 { 884 885 if (nswitch < nd) 886 return (gdate(nd, d)); 887 else 888 return (jdate(nd, d)); 889 } 890 891 /* Inverse of sndaysb */ 892 struct date * 893 sdateb(int nd, struct date *d) 894 { 895 896 if (nswitchb < nd) 897 return (gdate(nd, d)); 898 else 899 return (jdate(nd, d)); 900 } 901 902 /* Center string t in string s of length w by putting enough leading blanks */ 903 char * 904 center(char *s, char *t, int w) 905 { 906 char blanks[80]; 907 908 memset(blanks, ' ', sizeof(blanks)); 909 sprintf(s, "%.*s%s", (int)(w - strlen(t)) / 2, blanks, t); 910 return (s); 911 } 912 913 int 914 parsemonth(const char *s) 915 { 916 int v; 917 char *cp; 918 struct tm tm; 919 920 v = (int)strtol(s, &cp, 10); 921 if (cp != s) 922 return (v); 923 if (strptime(s, "%B", &tm) != NULL) 924 return (tm.tm_mon + 1); 925 if (strptime(s, "%b", &tm) != NULL) 926 return (tm.tm_mon + 1); 927 return (0); 928 } 929