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 and in regular mode*/ 49 #define MONTH_WIDTH_B_J 27 50 #define MONTH_WIDTH_B 20 51 52 #define MONTH_WIDTH_R_J 24 53 #define MONTH_WIDTH_R 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 unsigned int extralen[7]; 64 }; 65 66 struct weekdays { 67 wchar_t names[7][4]; 68 }; 69 70 /* The switches from Julian to Gregorian in some countries */ 71 static struct djswitch { 72 const char *cc; /* Country code according to ISO 3166 */ 73 const char *nm; /* Name of country */ 74 date dt; /* Last day of Julian calendar */ 75 } switches[] = { 76 {"AL", "Albania", {1912, 11, 30}}, 77 {"AT", "Austria", {1583, 10, 5}}, 78 {"AU", "Australia", {1752, 9, 2}}, 79 {"BE", "Belgium", {1582, 12, 14}}, 80 {"BG", "Bulgaria", {1916, 3, 18}}, 81 {"CA", "Canada", {1752, 9, 2}}, 82 {"CH", "Switzerland", {1655, 2, 28}}, 83 {"CN", "China", {1911, 12, 18}}, 84 {"CZ", "Czech Republic",{1584, 1, 6}}, 85 {"DE", "Germany", {1700, 2, 18}}, 86 {"DK", "Denmark", {1700, 2, 18}}, 87 {"ES", "Spain", {1582, 10, 4}}, 88 {"FI", "Finland", {1753, 2, 17}}, 89 {"FR", "France", {1582, 12, 9}}, 90 {"GB", "United Kingdom",{1752, 9, 2}}, 91 {"GR", "Greece", {1924, 3, 9}}, 92 {"HU", "Hungary", {1587, 10, 21}}, 93 {"IS", "Iceland", {1700, 11, 16}}, 94 {"IT", "Italy", {1582, 10, 4}}, 95 {"JP", "Japan", {1918, 12, 18}}, 96 {"LI", "Lithuania", {1918, 2, 1}}, 97 {"LN", "Latin", {9999, 05, 31}}, 98 {"LU", "Luxembourg", {1582, 12, 14}}, 99 {"LV", "Latvia", {1918, 2, 1}}, 100 {"NL", "Netherlands", {1582, 12, 14}}, 101 {"NO", "Norway", {1700, 2, 18}}, 102 {"PL", "Poland", {1582, 10, 4}}, 103 {"PT", "Portugal", {1582, 10, 4}}, 104 {"RO", "Romania", {1919, 3, 31}}, 105 {"RU", "Russia", {1918, 1, 31}}, 106 {"SI", "Slovenia", {1919, 3, 4}}, 107 {"SW", "Sweden", {1753, 2, 17}}, 108 {"TR", "Turkey", {1926, 12, 18}}, 109 {"US", "United States", {1752, 9, 2}}, 110 {"YU", "Yugoslavia", {1919, 3, 4}} 111 }; 112 113 struct djswitch *dftswitch = 114 switches + sizeof(switches) / sizeof(struct djswitch) - 2; 115 /* default switch (should be "US") */ 116 117 /* Table used to print day of month and week numbers */ 118 char daystr[] = " 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15" 119 " 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31" 120 " 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47" 121 " 48 49 50 51 52 53"; 122 123 /* Table used to print day of year and week numbers */ 124 char jdaystr[] = " 1 2 3 4 5 6 7 8 9" 125 " 10 11 12 13 14 15 16 17 18 19" 126 " 20 21 22 23 24 25 26 27 28 29" 127 " 30 31 32 33 34 35 36 37 38 39" 128 " 40 41 42 43 44 45 46 47 48 49" 129 " 50 51 52 53 54 55 56 57 58 59" 130 " 60 61 62 63 64 65 66 67 68 69" 131 " 70 71 72 73 74 75 76 77 78 79" 132 " 80 81 82 83 84 85 86 87 88 89" 133 " 90 91 92 93 94 95 96 97 98 99" 134 " 100 101 102 103 104 105 106 107 108 109" 135 " 110 111 112 113 114 115 116 117 118 119" 136 " 120 121 122 123 124 125 126 127 128 129" 137 " 130 131 132 133 134 135 136 137 138 139" 138 " 140 141 142 143 144 145 146 147 148 149" 139 " 150 151 152 153 154 155 156 157 158 159" 140 " 160 161 162 163 164 165 166 167 168 169" 141 " 170 171 172 173 174 175 176 177 178 179" 142 " 180 181 182 183 184 185 186 187 188 189" 143 " 190 191 192 193 194 195 196 197 198 199" 144 " 200 201 202 203 204 205 206 207 208 209" 145 " 210 211 212 213 214 215 216 217 218 219" 146 " 220 221 222 223 224 225 226 227 228 229" 147 " 230 231 232 233 234 235 236 237 238 239" 148 " 240 241 242 243 244 245 246 247 248 249" 149 " 250 251 252 253 254 255 256 257 258 259" 150 " 260 261 262 263 264 265 266 267 268 269" 151 " 270 271 272 273 274 275 276 277 278 279" 152 " 280 281 282 283 284 285 286 287 288 289" 153 " 290 291 292 293 294 295 296 297 298 299" 154 " 300 301 302 303 304 305 306 307 308 309" 155 " 310 311 312 313 314 315 316 317 318 319" 156 " 320 321 322 323 324 325 326 327 328 329" 157 " 330 331 332 333 334 335 336 337 338 339" 158 " 340 341 342 343 344 345 346 347 348 349" 159 " 350 351 352 353 354 355 356 357 358 359" 160 " 360 361 362 363 364 365 366"; 161 162 int flag_nohighlight; /* user doesn't want a highlighted today */ 163 int flag_weeks; /* user wants number of week */ 164 int nswitch; /* user defined switch date */ 165 int nswitchb; /* switch date for backward compatibility */ 166 int highlightdate; 167 168 char *center(char *s, char *t, int w); 169 wchar_t *wcenter(wchar_t *s, wchar_t *t, int w); 170 int firstday(int y, int m); 171 void highlight(char *dst, char *src, int len, int *extraletters); 172 void mkmonthr(int year, int month, int jd_flag, struct monthlines * monthl); 173 void mkmonthb(int year, int month, int jd_flag, struct monthlines * monthl); 174 void mkweekdays(struct weekdays * wds); 175 void monthranger(int year, int m, int jd_flag, int before, int after); 176 void monthrangeb(int year, int m, int jd_flag, int before, int after); 177 int parsemonth(const char *s, int *m, int *y); 178 void printcc(void); 179 void printeaster(int year, int julian, int orthodox); 180 date *sdater(int ndays, struct date * d); 181 date *sdateb(int ndays, struct date * d); 182 int sndaysr(struct date * d); 183 int sndaysb(struct date * d); 184 static void usage(void); 185 186 int 187 main(int argc, char *argv[]) 188 { 189 struct djswitch *p, *q; /* to search user defined switch date */ 190 date never = {10000, 1, 1}; /* outside valid range of dates */ 191 date ukswitch = {1752, 9, 2};/* switch date for Great Britain */ 192 date dt; 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_wholeyear = 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 numbers */ 200 int flag_orthodox = 0; /* user wants Orthodox easter */ 201 int flag_easter = 0; /* user wants easter date */ 202 int flag_3months = 0; /* user wants 3 month display (-3) */ 203 int flag_after = 0; /* user wants to see months after */ 204 int flag_before = 0; /* user wants to see months before */ 205 int flag_specifiedmonth = 0;/* user wants to see this month (-m) */ 206 int flag_givenmonth = 0; /* user has specified month [n] */ 207 int flag_givenyear = 0; /* user has specified year [n] */ 208 char *cp; /* character pointer */ 209 char *flag_today = NULL; /* debug: use date as being today */ 210 char *flag_month = NULL; /* requested month as string */ 211 char *flag_highlightdate = NULL; /* debug: date to highlight */ 212 int before, after; 213 const char *locale; /* locale to get country code */ 214 215 flag_nohighlight = 0; 216 flag_weeks = 0; 217 218 /* 219 * Use locale to determine the country code, 220 * and use the country code to determine the default 221 * switchdate and date format from the switches table. 222 */ 223 if (setlocale(LC_ALL, "") == NULL) 224 warn("setlocale"); 225 locale = setlocale(LC_TIME, NULL); 226 if (locale == NULL || 227 strcmp(locale, "C") == 0 || 228 strcmp(locale, "POSIX") == 0 || 229 strcmp(locale, "ASCII") == 0 || 230 strcmp(locale, "US-ASCII") == 0) 231 locale = "_US"; 232 q = switches + sizeof(switches) / sizeof(struct djswitch); 233 for (p = switches; p != q; p++) 234 if ((cp = strstr(locale, p->cc)) != NULL && *(cp - 1) == '_') 235 break; 236 if (p == q) { 237 nswitch = ndaysj(&dftswitch->dt); 238 } else { 239 nswitch = ndaysj(&p->dt); 240 dftswitch = p; 241 } 242 243 244 /* 245 * Get the filename portion of argv[0] and set flag_backward if 246 * this program is called "cal". 247 */ 248 cp = strrchr(argv[0], '/'); 249 cp = (cp == NULL) ? argv[0] : cp + 1; 250 if (strcmp("cal", cp) == 0) 251 flag_backward = 1; 252 253 /* Set the switch date to United Kingdom if backwards compatible */ 254 if (flag_backward) 255 nswitchb = ndaysj(&ukswitch); 256 257 before = after = -1; 258 259 while ((ch = getopt(argc, argv, "3A:B:Cd:eH:hjJm:Nops:wy")) != -1) 260 switch (ch) { 261 case '3': 262 flag_3months = 1; 263 break; 264 case 'A': 265 if (flag_after > 0) 266 errx(EX_USAGE, "Double -A specified"); 267 flag_after = strtol(optarg, NULL, 10); 268 if (flag_after <= 0) 269 errx(EX_USAGE, 270 "Argument to -A must be positive"); 271 break; 272 case 'B': 273 if (flag_before > 0) 274 errx(EX_USAGE, "Double -A specified"); 275 flag_before = strtol(optarg, NULL, 10); 276 if (flag_before <= 0) 277 errx(EX_USAGE, 278 "Argument to -B must be positive"); 279 break; 280 case 'J': 281 if (flag_backward) 282 usage(); 283 nswitch = ndaysj(&never); 284 flag_julian_cal = 1; 285 break; 286 case 'C': 287 flag_backward = 1; 288 break; 289 case 'N': 290 flag_backward = 0; 291 break; 292 case 'd': 293 flag_today = optarg; 294 break; 295 case 'H': 296 flag_highlightdate = optarg; 297 break; 298 case 'h': 299 flag_nohighlight = 1; 300 break; 301 case 'e': 302 if (flag_backward) 303 usage(); 304 flag_easter = 1; 305 break; 306 case 'j': 307 flag_julian_day = 1; 308 break; 309 case 'm': 310 if (flag_specifiedmonth) 311 errx(EX_USAGE, "Double -m specified"); 312 flag_month = optarg; 313 flag_specifiedmonth = 1; 314 break; 315 case 'o': 316 if (flag_backward) 317 usage(); 318 flag_orthodox = 1; 319 flag_easter = 1; 320 break; 321 case 'p': 322 if (flag_backward) 323 usage(); 324 printcc(); 325 return (0); 326 break; 327 case 's': 328 if (flag_backward) 329 usage(); 330 q = switches + 331 sizeof(switches) / sizeof(struct djswitch); 332 for (p = switches; 333 p != q && strcmp(p->cc, optarg) != 0; p++) 334 ; 335 if (p == q) 336 errx(EX_USAGE, 337 "%s: invalid country code", optarg); 338 nswitch = ndaysj(&(p->dt)); 339 break; 340 case 'w': 341 if (flag_backward) 342 usage(); 343 flag_weeks = 1; 344 break; 345 case 'y': 346 flag_wholeyear = 1; 347 break; 348 default: 349 usage(); 350 } 351 352 argc -= optind; 353 argv += optind; 354 355 switch (argc) { 356 case 2: 357 if (flag_easter) 358 usage(); 359 flag_month = *argv++; 360 flag_givenmonth = 1; 361 m = strtol(flag_month, NULL, 10); 362 /* FALLTHROUGH */ 363 case 1: 364 y = atoi(*argv); 365 if (y < 1 || y > 9999) 366 errx(EX_USAGE, "year `%s' not in range 1..9999", *argv); 367 argv++; 368 flag_givenyear = 1; 369 break; 370 case 0: 371 if (flag_today != NULL) { 372 y = strtol(flag_today, NULL, 10); 373 m = strtol(flag_today + 5, NULL, 10); 374 } else { 375 time_t t; 376 struct tm *tm; 377 378 t = time(NULL); 379 tm = localtime(&t); 380 y = tm->tm_year + 1900; 381 m = tm->tm_mon + 1; 382 } 383 break; 384 default: 385 usage(); 386 } 387 388 if (flag_month != NULL) { 389 if (parsemonth(flag_month, &m, &y)) { 390 errx(EX_USAGE, 391 "%s is neither a month number (1..12) nor a name", 392 flag_month); 393 } 394 } 395 396 /* 397 * What is not supported: 398 * -3 with -A or -B 399 * -3 displays 3 months, -A and -B change that behaviour. 400 * -3 with -y 401 * -3 displays 3 months, -y says display a whole year. 402 * -3 with a given year but no given month or without -m 403 * -3 displays 3 months, no month specified doesn't make clear 404 * which three months. 405 * -m with a given month 406 * conflicting arguments, both specify the same field. 407 * -y with -m 408 * -y displays the whole year, -m displays a single month. 409 * -y with a given month 410 * -y displays the whole year, the given month displays a single 411 * month. 412 * -y with -A or -B 413 * -y displays the whole year, -A and -B display extra months. 414 */ 415 416 /* -3 together with -A or -B. */ 417 if (flag_3months && (flag_after || flag_before)) 418 errx(EX_USAGE, "-3 together with -A and -B is not supported."); 419 /* -3 together with -y. */ 420 if (flag_3months && flag_wholeyear) 421 errx(EX_USAGE, "-3 together with -y is not supported."); 422 /* -3 together with givenyear but no givenmonth. */ 423 if (flag_3months && flag_givenyear && 424 !(flag_givenmonth || flag_specifiedmonth)) 425 errx(EX_USAGE, 426 "-3 together with a given year but no given month is " 427 "not supported."); 428 /* -m together with xx xxxx. */ 429 if (flag_specifiedmonth && flag_givenmonth) 430 errx(EX_USAGE, 431 "-m together with a given month is not supported."); 432 /* -y together with -m. */ 433 if (flag_wholeyear && flag_specifiedmonth) 434 errx(EX_USAGE, "-y together with -m is not supported."); 435 /* -y together with xx xxxx. */ 436 if (flag_wholeyear && flag_givenmonth) 437 errx(EX_USAGE, "-y together a given month is not supported."); 438 /* -y together with -A or -B. */ 439 if (flag_wholeyear && (flag_before > 0 || flag_after > 0)) 440 errx(EX_USAGE, "-y together a -A or -B is not supported."); 441 /* The rest should be fine. */ 442 443 /* Select the period to display, in order of increasing priority .*/ 444 if (flag_wholeyear || 445 (flag_givenyear && !(flag_givenmonth || flag_specifiedmonth))) { 446 m = 1; 447 before = 0; 448 after = 11; 449 } 450 if (flag_givenyear && flag_givenmonth) { 451 before = 0; 452 after = 0; 453 } 454 if (flag_specifiedmonth) { 455 before = 0; 456 after = 0; 457 } 458 if (flag_before) { 459 before = flag_before; 460 } 461 if (flag_after) { 462 after = flag_after; 463 } 464 if (flag_3months) { 465 before = 1; 466 after = 1; 467 } 468 if (after == -1) 469 after = 0; 470 if (before == -1) 471 before = 0; 472 473 /* Highlight a specified day or today .*/ 474 if (flag_highlightdate != NULL) { 475 dt.y = strtol(flag_highlightdate, NULL, 10); 476 dt.m = strtol(flag_highlightdate + 5, NULL, 10); 477 dt.d = strtol(flag_highlightdate + 8, NULL, 10); 478 } else { 479 time_t t; 480 struct tm *tm1; 481 482 t = time(NULL); 483 tm1 = localtime(&t); 484 dt.y = tm1->tm_year + 1900; 485 dt.m = tm1->tm_mon + 1; 486 dt.d = tm1->tm_mday; 487 } 488 highlightdate = sndaysb(&dt); 489 490 /* And now we finally start to calculate and output calendars. */ 491 if (flag_easter) 492 printeaster(y, flag_julian_cal, flag_orthodox); 493 else 494 if (flag_backward) 495 monthrangeb(y, m, flag_julian_day, before, after); 496 else 497 monthranger(y, m, flag_julian_day, before, after); 498 return (0); 499 } 500 501 static void 502 usage(void) 503 { 504 505 fputs( 506 "Usage: cal [general options] [-hjy] [[month] year]\n" 507 " cal [general options] [-hj] [-m month] [year]\n" 508 " ncal [general options] [-hJjpwy] [-s country_code] [[month] year]\n" 509 " ncal [general options] [-hJeo] [year]\n" 510 "General options: [-NC3] [-A months] [-B months]\n" 511 "For debug the highlighting: [-H yyyy-mm-dd] [-d yyyy-mm]\n", 512 stderr); 513 exit(EX_USAGE); 514 } 515 516 /* Print the assumed switches for all countries. */ 517 void 518 printcc(void) 519 { 520 struct djswitch *p; 521 int n; /* number of lines to print */ 522 int m; /* offset from left to right table entry on the same line */ 523 524 #define FSTR "%c%s %-15s%4d-%02d-%02d" 525 #define DFLT(p) ((p) == dftswitch ? '*' : ' ') 526 #define FSTRARG(p) DFLT(p), (p)->cc, (p)->nm, (p)->dt.y, (p)->dt.m, (p)->dt.d 527 528 n = sizeof(switches) / sizeof(struct djswitch); 529 m = (n + 1) / 2; 530 n /= 2; 531 for (p = switches; p != switches + n; p++) 532 printf(FSTR" "FSTR"\n", FSTRARG(p), FSTRARG(p+m)); 533 if (m != n) 534 printf(FSTR"\n", FSTRARG(p)); 535 } 536 537 /* Print the date of easter sunday. */ 538 void 539 printeaster(int y, int julian, int orthodox) 540 { 541 date dt; 542 struct tm tm; 543 char buf[MAX_WIDTH]; 544 static int d_first = -1; 545 546 if (d_first < 0) 547 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 548 /* force orthodox easter for years before 1583 */ 549 if (y < 1583) 550 orthodox = 1; 551 552 if (orthodox) 553 if (julian) 554 easteroj(y, &dt); 555 else 556 easterog(y, &dt); 557 else 558 easterg(y, &dt); 559 560 memset(&tm, 0, sizeof(tm)); 561 tm.tm_year = dt.y - 1900; 562 tm.tm_mon = dt.m - 1; 563 tm.tm_mday = dt.d; 564 strftime(buf, sizeof(buf), d_first ? "%e %B %Y" : "%B %e %Y", &tm); 565 printf("%s\n", buf); 566 } 567 568 #define MW(mw, me) ((mw) + me) 569 #define DECREASEMONTH(m, y) \ 570 if (--m == 0) { \ 571 m = 12; \ 572 y--; \ 573 } 574 #define INCREASEMONTH(m, y) \ 575 if (++(m) == 13) { \ 576 (m) = 1; \ 577 (y)++; \ 578 } 579 #define M2Y(m) ((m) / 12) 580 #define M2M(m) (1 + (m) % 12) 581 582 /* Print all months for the period in the range [ before .. y-m .. after ]. */ 583 void 584 monthrangeb(int y, int m, int jd_flag, int before, int after) 585 { 586 struct monthlines year[12]; 587 struct weekdays wds; 588 char s[MAX_WIDTH], t[MAX_WIDTH]; 589 wchar_t ws[MAX_WIDTH], ws1[MAX_WIDTH]; 590 const char *wdss; 591 int i, j; 592 int mpl; 593 int mw; 594 int m1, m2; 595 int printyearheader; 596 int prevyear = -1; 597 598 mpl = jd_flag ? 2 : 3; 599 mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; 600 wdss = (mpl == 2) ? " " : ""; 601 602 while (before != 0) { 603 DECREASEMONTH(m, y); 604 before--; 605 after++; 606 } 607 m1 = y * 12 + m - 1; 608 m2 = m1 + after; 609 610 mkweekdays(&wds); 611 612 /* 613 * The year header is printed when there are more than 'mpl' months 614 * and if the first month is a multitude of 'mpl'. 615 * If not, it will print the year behind every month. 616 */ 617 printyearheader = (after >= mpl - 1) && (M2M(m1) - 1) % mpl == 0; 618 619 m = m1; 620 while (m <= m2) { 621 int count = 0; 622 for (i = 0; i != mpl && m + i <= m2; i++) { 623 mkmonthb(M2Y(m + i), M2M(m + i) - 1, jd_flag, year + i); 624 count++; 625 } 626 627 /* Empty line between two rows of months */ 628 if (m != m1) 629 printf("\n"); 630 631 /* Year at the top. */ 632 if (printyearheader && M2Y(m) != prevyear) { 633 sprintf(s, "%d", M2Y(m)); 634 printf("%s\n", center(t, s, mpl * mw)); 635 prevyear = M2Y(m); 636 } 637 638 /* Month names. */ 639 for (i = 0; i < count; i++) 640 if (printyearheader) 641 wprintf(L"%-*ls ", 642 mw, wcenter(ws, year[i].name, mw)); 643 else { 644 swprintf(ws, sizeof(ws), L"%-ls %d", 645 year[i].name, M2Y(m + i)); 646 wprintf(L"%-*ls ", mw, wcenter(ws1, ws, mw)); 647 } 648 printf("\n"); 649 650 /* Day of the week names. */ 651 for (i = 0; i < count; i++) { 652 wprintf(L"%s%ls%s%ls%s%ls%s%ls%s%ls%s%ls%s%ls ", 653 wdss, wds.names[6], wdss, wds.names[0], 654 wdss, wds.names[1], wdss, wds.names[2], 655 wdss, wds.names[3], wdss, wds.names[4], 656 wdss, wds.names[5]); 657 } 658 printf("\n"); 659 660 /* And the days of the month. */ 661 for (i = 0; i != 6; i++) { 662 for (j = 0; j < count; j++) 663 printf("%-*s ", 664 MW(mw, year[j].extralen[i]), 665 year[j].lines[i]+1); 666 printf("\n"); 667 } 668 669 m += mpl; 670 } 671 } 672 673 void 674 monthranger(int y, int m, int jd_flag, int before, int after) 675 { 676 struct monthlines year[12]; 677 struct weekdays wds; 678 char s[MAX_WIDTH], t[MAX_WIDTH]; 679 int i, j; 680 int mpl; 681 int mw; 682 int m1, m2; 683 int prevyear = -1; 684 int printyearheader; 685 686 mpl = jd_flag ? 3 : 4; 687 mw = jd_flag ? MONTH_WIDTH_R_J : MONTH_WIDTH_R; 688 689 while (before != 0) { 690 DECREASEMONTH(m, y); 691 before--; 692 after++; 693 } 694 m1 = y * 12 + m - 1; 695 m2 = m1 + after; 696 697 mkweekdays(&wds); 698 699 /* 700 * The year header is printed when there are more than 'mpl' months 701 * and if the first month is a multitude of 'mpl'. 702 * If not, it will print the year behind every month. 703 */ 704 printyearheader = (after >= mpl - 1) && (M2M(m1) - 1) % mpl == 0; 705 706 m = m1; 707 while (m <= m2) { 708 int count = 0; 709 for (i = 0; i != mpl && m + i <= m2; i++) { 710 mkmonthr(M2Y(m + i), M2M(m + i) - 1, jd_flag, year + i); 711 count++; 712 } 713 714 /* Empty line between two rows of months. */ 715 if (m != m1) 716 printf("\n"); 717 718 /* Year at the top. */ 719 if (printyearheader && M2Y(m) != prevyear) { 720 sprintf(s, "%d", M2Y(m)); 721 printf("%s\n", center(t, s, mpl * mw)); 722 prevyear = M2Y(m); 723 } 724 725 /* Month names. */ 726 wprintf(L" "); 727 for (i = 0; i < count; i++) 728 if (printyearheader) 729 wprintf(L"%-*ls", mw, year[i].name); 730 else 731 wprintf(L"%-ls %-*d", year[i].name, 732 mw - wcslen(year[i].name) - 1, M2Y(m + i)); 733 printf("\n"); 734 735 /* And the days of the month. */ 736 for (i = 0; i != 7; i++) { 737 /* Week day */ 738 wprintf(L"%.2ls", wds.names[i]); 739 740 /* Full months */ 741 for (j = 0; j < count; j++) 742 printf("%-*s", 743 MW(mw, year[j].extralen[i]), 744 year[j].lines[i]); 745 printf("\n"); 746 } 747 748 /* Week numbers. */ 749 if (flag_weeks) { 750 printf(" "); 751 for (i = 0; i < count; i++) 752 printf("%-*s", mw, year[i].weeks); 753 printf("\n"); 754 } 755 756 m += mpl; 757 } 758 return; 759 } 760 761 void 762 mkmonthr(int y, int m, int jd_flag, struct monthlines *mlines) 763 { 764 765 struct tm tm; /* for strftime printing local names of 766 * months */ 767 date dt; /* handy date */ 768 int dw; /* width of numbers */ 769 int first; /* first day of month */ 770 int firstm; /* first day of first week of month */ 771 int i, j, k, l; /* just indices */ 772 int last; /* the first day of next month */ 773 int jan1 = 0; /* the first day of this year */ 774 char *ds; /* pointer to day strings (daystr or 775 * jdaystr) */ 776 777 /* Set name of month. */ 778 memset(&tm, 0, sizeof(tm)); 779 tm.tm_mon = m; 780 wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]), 781 L"%OB", &tm); 782 mlines->name[0] = towupper(mlines->name[0]); 783 784 /* 785 * Set first and last to the day number of the first day of this 786 * month and the first day of next month respectively. Set jan1 to 787 * the day number of the first day of this year. 788 */ 789 first = firstday(y, m + 1); 790 if (m == 11) 791 last = firstday(y + 1, 1); 792 else 793 last = firstday(y, m + 2); 794 795 if (jd_flag) 796 jan1 = firstday(y, 1); 797 798 /* 799 * Set firstm to the day number of monday of the first week of 800 * this month. (This might be in the last month) 801 */ 802 firstm = first - weekday(first); 803 804 /* Set ds (daystring) and dw (daywidth) according to the jd_flag. */ 805 if (jd_flag) { 806 ds = jdaystr; 807 dw = 4; 808 } else { 809 ds = daystr; 810 dw = 3; 811 } 812 813 /* 814 * Fill the lines with day of month or day of year (julian day) 815 * line index: i, each line is one weekday. column index: j, each 816 * column is one day number. print column index: k. 817 */ 818 for (i = 0; i != 7; i++) { 819 l = 0; 820 for (j = firstm + i, k = 0; j < last; j += 7, k += dw) { 821 if (j >= first) { 822 if (jd_flag) 823 dt.d = j - jan1 + 1; 824 else 825 sdater(j, &dt); 826 if (j == highlightdate && !flag_nohighlight) 827 highlight(mlines->lines[i] + k, 828 ds + dt.d * dw, dw, &l); 829 else 830 memcpy(mlines->lines[i] + k + l, 831 ds + dt.d * dw, dw); 832 } else 833 memcpy(mlines->lines[i] + k + l, " ", dw); 834 } 835 mlines->lines[i][k + l] = '\0'; 836 mlines->extralen[i] = l; 837 } 838 839 /* fill the weeknumbers. */ 840 if (flag_weeks) { 841 for (j = firstm, k = 0; j < last; k += dw, j += 7) 842 if (j <= nswitch) 843 memset(mlines->weeks + k, ' ', dw); 844 else 845 memcpy(mlines->weeks + k, 846 ds + week(j, &i)*dw, dw); 847 mlines->weeks[k] = '\0'; 848 } 849 } 850 851 void 852 mkmonthb(int y, int m, int jd_flag, struct monthlines *mlines) 853 { 854 855 struct tm tm; /* for strftime printing local names of 856 * months */ 857 date dt; /* handy date */ 858 int dw; /* width of numbers */ 859 int first; /* first day of month */ 860 int firsts; /* sunday of first week of month */ 861 int i, j, k, l; /* just indices */ 862 int jan1 = 0; /* the first day of this year */ 863 int last; /* the first day of next month */ 864 char *ds; /* pointer to day strings (daystr or 865 * jdaystr) */ 866 867 /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ 868 if (jd_flag) { 869 ds = jdaystr; 870 dw = 4; 871 } else { 872 ds = daystr; 873 dw = 3; 874 } 875 876 /* Set name of month centered. */ 877 memset(&tm, 0, sizeof(tm)); 878 tm.tm_mon = m; 879 wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]), 880 L"%OB", &tm); 881 mlines->name[0] = towupper(mlines->name[0]); 882 883 /* 884 * Set first and last to the day number of the first day of this 885 * month and the first day of next month respectively. Set jan1 to 886 * the day number of Jan 1st of this year. 887 */ 888 dt.y = y; 889 dt.m = m + 1; 890 dt.d = 1; 891 first = sndaysb(&dt); 892 if (m == 11) { 893 dt.y = y + 1; 894 dt.m = 1; 895 dt.d = 1; 896 } else { 897 dt.y = y; 898 dt.m = m + 2; 899 dt.d = 1; 900 } 901 last = sndaysb(&dt); 902 903 if (jd_flag) { 904 dt.y = y; 905 dt.m = 1; 906 dt.d = 1; 907 jan1 = sndaysb(&dt); 908 } 909 910 /* 911 * Set firsts to the day number of sunday of the first week of 912 * this month. (This might be in the last month) 913 */ 914 firsts = first - (weekday(first)+1) % 7; 915 916 /* 917 * Fill the lines with day of month or day of year (Julian day) 918 * line index: i, each line is one week. column index: j, each 919 * column is one day number. print column index: k. 920 */ 921 for (i = 0; i != 6; i++) { 922 l = 0; 923 for (j = firsts + 7 * i, k = 0; j < last && k != dw * 7; 924 j++, k += dw) { 925 if (j >= first) { 926 if (jd_flag) 927 dt.d = j - jan1 + 1; 928 else 929 sdateb(j, &dt); 930 if (j == highlightdate && !flag_nohighlight) 931 highlight(mlines->lines[i] + k, 932 ds + dt.d * dw, dw, &l); 933 else 934 memcpy(mlines->lines[i] + k + l, 935 ds + dt.d * dw, dw); 936 } else 937 memcpy(mlines->lines[i] + k + l, " ", dw); 938 } 939 if (k == 0) 940 mlines->lines[i][1] = '\0'; 941 else 942 mlines->lines[i][k + l] = '\0'; 943 mlines->extralen[i] = l; 944 } 945 } 946 947 /* Put the local names of weekdays into the wds. */ 948 void 949 mkweekdays(struct weekdays *wds) 950 { 951 int i, len, width = 0; 952 struct tm tm; 953 wchar_t buf[20]; 954 955 memset(&tm, 0, sizeof(tm)); 956 957 for (i = 0; i != 7; i++) { 958 tm.tm_wday = (i+1) % 7; 959 wcsftime(buf, sizeof(buf), L"%a", &tm); 960 for (len = 2; len > 0; --len) { 961 if ((width = wcswidth(buf, len)) <= 2) 962 break; 963 } 964 wmemset(wds->names[i], L'\0', 4); 965 if (width == 1) 966 wds->names[i][0] = L' '; 967 wcsncat(wds->names[i], buf, len); 968 wcsncat(wds->names[i], L" ", 1); 969 } 970 } 971 972 /* 973 * Compute the day number of the first existing date after the first day in 974 * month. (the first day in month and even the month might not exist!) 975 */ 976 int 977 firstday(int y, int m) 978 { 979 date dt; 980 int nd; 981 982 dt.y = y; 983 dt.m = m; 984 dt.d = 1; 985 nd = sndaysr(&dt); 986 for (;;) { 987 sdater(nd, &dt); 988 if ((dt.m >= m && dt.y == y) || dt.y > y) 989 return (nd); 990 else 991 nd++; 992 } 993 /* NEVER REACHED */ 994 } 995 996 /* 997 * Compute the number of days from date, obey the local switch from 998 * Julian to Gregorian if specified by the user. 999 */ 1000 int 1001 sndaysr(struct date *d) 1002 { 1003 1004 if (nswitch != 0) 1005 if (nswitch < ndaysj(d)) 1006 return (ndaysg(d)); 1007 else 1008 return (ndaysj(d)); 1009 else 1010 return ndaysg(d); 1011 } 1012 1013 /* 1014 * Compute the number of days from date, obey the switch from 1015 * Julian to Gregorian as used by UK and her colonies. 1016 */ 1017 int 1018 sndaysb(struct date *d) 1019 { 1020 1021 if (nswitchb < ndaysj(d)) 1022 return (ndaysg(d)); 1023 else 1024 return (ndaysj(d)); 1025 } 1026 1027 /* Inverse of sndays. */ 1028 struct date * 1029 sdater(int nd, struct date *d) 1030 { 1031 1032 if (nswitch < nd) 1033 return (gdate(nd, d)); 1034 else 1035 return (jdate(nd, d)); 1036 } 1037 1038 /* Inverse of sndaysb. */ 1039 struct date * 1040 sdateb(int nd, struct date *d) 1041 { 1042 1043 if (nswitchb < nd) 1044 return (gdate(nd, d)); 1045 else 1046 return (jdate(nd, d)); 1047 } 1048 1049 /* Center string t in string s of length w by putting enough leading blanks. */ 1050 char * 1051 center(char *s, char *t, int w) 1052 { 1053 char blanks[MAX_WIDTH]; 1054 1055 memset(blanks, ' ', sizeof(blanks)); 1056 sprintf(s, "%.*s%s", (int)(w - strlen(t)) / 2, blanks, t); 1057 return (s); 1058 } 1059 1060 /* Center string t in string s of length w by putting enough leading blanks. */ 1061 wchar_t * 1062 wcenter(wchar_t *s, wchar_t *t, int w) 1063 { 1064 char blanks[MAX_WIDTH]; 1065 1066 memset(blanks, ' ', sizeof(blanks)); 1067 swprintf(s, MAX_WIDTH, L"%.*s%ls", (int)(w - wcslen(t)) / 2, blanks, t); 1068 return (s); 1069 } 1070 1071 int 1072 parsemonth(const char *s, int *m, int *y) 1073 { 1074 int nm, ny; 1075 char *cp; 1076 struct tm tm; 1077 1078 nm = (int)strtol(s, &cp, 10); 1079 if (cp != s) { 1080 ny = *y; 1081 if (*cp == '\0') { 1082 ; /* no special action */ 1083 } else if (*cp == 'f' || *cp == 'F') { 1084 if (nm <= *m) 1085 ny++; 1086 } else if (*cp == 'p' || *cp == 'P') { 1087 if (nm >= *m) 1088 ny--; 1089 } else 1090 return (1); 1091 if (nm < 1 || nm > 12) 1092 return 1; 1093 *m = nm; 1094 *y = ny; 1095 return (0); 1096 } 1097 if (strptime(s, "%B", &tm) != NULL || strptime(s, "%b", &tm) != NULL) { 1098 *m = tm.tm_mon + 1; 1099 return (0); 1100 } 1101 return (1); 1102 } 1103 1104 void 1105 highlight(char *dst, char *src, int len, int *extralen) 1106 { 1107 static int first = 1; 1108 static const char *term_so, *term_se; 1109 1110 if (first) { 1111 char tbuf[1024], cbuf[512], *b; 1112 1113 term_se = term_so = NULL; 1114 1115 /* On how to highlight on this type of terminal (if any). */ 1116 if (isatty(STDOUT_FILENO) && tgetent(tbuf, NULL) == 1) { 1117 b = cbuf; 1118 term_so = tgetstr("so", &b); 1119 term_se = tgetstr("se", &b); 1120 } 1121 1122 first = 0; 1123 } 1124 1125 /* 1126 * This check is not necessary, should have been handled before calling 1127 * this function. 1128 */ 1129 if (flag_nohighlight) { 1130 memcpy(dst, src, len); 1131 return; 1132 } 1133 1134 /* 1135 * If it is a real terminal, use the data from the termcap database. 1136 */ 1137 if (term_so != NULL && term_se != NULL) { 1138 /* separator. */ 1139 dst[0] = ' '; 1140 dst++; 1141 /* highlight on. */ 1142 memcpy(dst, term_so, strlen(term_so)); 1143 dst += strlen(term_so); 1144 /* the actual text. (minus leading space) */ 1145 len--; 1146 src++; 1147 memcpy(dst, src, len); 1148 dst += len; 1149 /* highlight off. */ 1150 memcpy(dst, term_se, strlen(term_se)); 1151 *extralen = strlen(term_so) + strlen(term_se); 1152 return; 1153 } 1154 1155 /* 1156 * Otherwise, print a _, backspace and the letter. 1157 */ 1158 *extralen = 0; 1159 /* skip leading space. */ 1160 src++; 1161 len--; 1162 /* separator. */ 1163 dst[0] = ' '; 1164 dst++; 1165 while (len > 0) { 1166 /* _ and backspace. */ 1167 memcpy(dst, "_\010", 2); 1168 dst += 2; 1169 *extralen += 2; 1170 /* the character. */ 1171 *dst++ = *src++; 1172 len--; 1173 } 1174 return; 1175 } 1176