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 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <calendar.h> 31 #include <ctype.h> 32 #include <err.h> 33 #include <langinfo.h> 34 #include <libgen.h> 35 #include <locale.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #include <sysexits.h> 40 #include <time.h> 41 #include <unistd.h> 42 #include <wchar.h> 43 #include <wctype.h> 44 #include <term.h> 45 #undef lines /* term.h defines this */ 46 47 /* Width of one month with backward compatibility and in regular mode*/ 48 #define MONTH_WIDTH_B_J 27 49 #define MONTH_WIDTH_B 20 50 51 #define MONTH_WIDTH_R_J 24 52 #define MONTH_WIDTH_R 18 53 54 #define MAX_WIDTH 64 55 56 typedef struct date date; 57 58 struct monthlines { 59 wchar_t name[MAX_WIDTH + 1]; 60 char lines[7][MAX_WIDTH + 1]; 61 char weeks[MAX_WIDTH + 1]; 62 unsigned int extralen[7]; 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 {"SE", "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 static 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 static 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 static 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 static int flag_nohighlight; /* user doesn't want a highlighted today */ 162 static int flag_weeks; /* user wants number of week */ 163 static int nswitch; /* user defined switch date */ 164 static int nswitchb; /* switch date for backward compatibility */ 165 static int highlightdate; 166 167 static char *center(char *s, char *t, int w); 168 static wchar_t *wcenter(wchar_t *s, wchar_t *t, int w); 169 static int firstday(int y, int m); 170 static void highlight(char *dst, char *src, int len, int *extraletters); 171 static void mkmonthr(int year, int month, int jd_flag, 172 struct monthlines * monthl); 173 static void mkmonthb(int year, int month, int jd_flag, 174 struct monthlines * monthl); 175 static void mkweekdays(struct weekdays * wds); 176 static void monthranger(int year, int m, int jd_flag, 177 int before, int after); 178 static void monthrangeb(int year, int m, int jd_flag, 179 int before, int after); 180 static int parsemonth(const char *s, int *m, int *y); 181 static void printcc(void); 182 static void printeaster(int year, int julian, int orthodox); 183 static date *sdater(int ndays, struct date * d); 184 static date *sdateb(int ndays, struct date * d); 185 static int sndaysr(struct date * d); 186 static int sndaysb(struct date * d); 187 static void usage(void); 188 189 int 190 main(int argc, char *argv[]) 191 { 192 struct djswitch *p, *q; /* to search user defined switch date */ 193 date never = {10000, 1, 1}; /* outside valid range of dates */ 194 date ukswitch = {1752, 9, 2};/* switch date for Great Britain */ 195 date dt; 196 int ch; /* holds the option character */ 197 int m = 0; /* month */ 198 int y = 0; /* year */ 199 int flag_backward = 0; /* user called cal--backward compat. */ 200 int flag_wholeyear = 0; /* user wants the whole year */ 201 int flag_julian_cal = 0; /* user wants Julian Calendar */ 202 int flag_julian_day = 0; /* user wants the Julian day numbers */ 203 int flag_orthodox = 0; /* user wants Orthodox easter */ 204 int flag_easter = 0; /* user wants easter date */ 205 int flag_3months = 0; /* user wants 3 month display (-3) */ 206 int flag_after = 0; /* user wants to see months after */ 207 int flag_before = 0; /* user wants to see months before */ 208 int flag_specifiedmonth = 0;/* user wants to see this month (-m) */ 209 int flag_givenmonth = 0; /* user has specified month [n] */ 210 int flag_givenyear = 0; /* user has specified year [n] */ 211 char *cp; /* character pointer */ 212 char *flag_today = NULL; /* debug: use date as being today */ 213 char *flag_month = NULL; /* requested month as string */ 214 char *flag_highlightdate = NULL; /* debug: date to highlight */ 215 int before, after; 216 const char *locale; /* locale to get country code */ 217 218 flag_nohighlight = 0; 219 flag_weeks = 0; 220 221 /* 222 * Use locale to determine the country code, 223 * and use the country code to determine the default 224 * switchdate and date format from the switches table. 225 */ 226 if (setlocale(LC_ALL, "") == NULL) 227 warn("setlocale"); 228 locale = setlocale(LC_TIME, NULL); 229 if (locale == NULL || 230 strcmp(locale, "C") == 0 || 231 strcmp(locale, "POSIX") == 0 || 232 strcmp(locale, "ASCII") == 0 || 233 strcmp(locale, "US-ASCII") == 0) 234 locale = "_US"; 235 q = switches + sizeof(switches) / sizeof(struct djswitch); 236 for (p = switches; p != q; p++) 237 if ((cp = strstr(locale, p->cc)) != NULL && *(cp - 1) == '_') 238 break; 239 if (p == q) { 240 nswitch = ndaysj(&dftswitch->dt); 241 } else { 242 nswitch = ndaysj(&p->dt); 243 dftswitch = p; 244 } 245 246 247 /* 248 * Get the filename portion of argv[0] and set flag_backward if 249 * this program is called "cal". 250 */ 251 if (strncmp(basename(argv[0]), "cal", strlen("cal")) == 0) 252 flag_backward = 1; 253 254 /* Set the switch date to United Kingdom if backwards compatible */ 255 if (flag_backward) 256 nswitchb = ndaysj(&ukswitch); 257 258 before = after = -1; 259 260 while ((ch = getopt(argc, argv, "3A:B:Cd:eH:hjJm:Nops:wy")) != -1) 261 switch (ch) { 262 case '3': 263 flag_3months = 1; 264 break; 265 case 'A': 266 if (flag_after > 0) 267 errx(EX_USAGE, "Double -A specified"); 268 flag_after = strtol(optarg, NULL, 10); 269 if (flag_after <= 0) 270 errx(EX_USAGE, 271 "Argument to -A must be positive"); 272 break; 273 case 'B': 274 if (flag_before > 0) 275 errx(EX_USAGE, "Double -A specified"); 276 flag_before = strtol(optarg, NULL, 10); 277 if (flag_before <= 0) 278 errx(EX_USAGE, 279 "Argument to -B must be positive"); 280 break; 281 case 'J': 282 if (flag_backward) 283 usage(); 284 nswitch = ndaysj(&never); 285 flag_julian_cal = 1; 286 break; 287 case 'C': 288 flag_backward = 1; 289 break; 290 case 'N': 291 flag_backward = 0; 292 break; 293 case 'd': 294 flag_today = optarg; 295 break; 296 case 'H': 297 flag_highlightdate = optarg; 298 break; 299 case 'h': 300 flag_nohighlight = 1; 301 break; 302 case 'e': 303 if (flag_backward) 304 usage(); 305 flag_easter = 1; 306 break; 307 case 'j': 308 flag_julian_day = 1; 309 break; 310 case 'm': 311 if (flag_specifiedmonth) 312 errx(EX_USAGE, "Double -m specified"); 313 flag_month = optarg; 314 flag_specifiedmonth = 1; 315 break; 316 case 'o': 317 if (flag_backward) 318 usage(); 319 flag_orthodox = 1; 320 flag_easter = 1; 321 break; 322 case 'p': 323 if (flag_backward) 324 usage(); 325 printcc(); 326 return (0); 327 break; 328 case 's': 329 if (flag_backward) 330 usage(); 331 q = switches + 332 sizeof(switches) / sizeof(struct djswitch); 333 for (p = switches; 334 p != q && strcmp(p->cc, optarg) != 0; p++) 335 ; 336 if (p == q) 337 errx(EX_USAGE, 338 "%s: invalid country code", optarg); 339 nswitch = ndaysj(&(p->dt)); 340 break; 341 case 'w': 342 if (flag_backward) 343 usage(); 344 flag_weeks = 1; 345 break; 346 case 'y': 347 flag_wholeyear = 1; 348 break; 349 default: 350 usage(); 351 } 352 353 argc -= optind; 354 argv += optind; 355 356 switch (argc) { 357 case 2: 358 if (flag_easter) 359 usage(); 360 flag_month = *argv++; 361 flag_givenmonth = 1; 362 m = strtol(flag_month, NULL, 10); 363 /* FALLTHROUGH */ 364 case 1: 365 y = atoi(*argv); 366 if (y < 1 || y > 9999) 367 errx(EX_USAGE, "year `%s' not in range 1..9999", *argv); 368 argv++; 369 flag_givenyear = 1; 370 break; 371 case 0: 372 if (flag_today != NULL) { 373 y = strtol(flag_today, NULL, 10); 374 m = strtol(flag_today + 5, NULL, 10); 375 } else { 376 time_t t; 377 struct tm *tm; 378 379 t = time(NULL); 380 tm = localtime(&t); 381 y = tm->tm_year + 1900; 382 m = tm->tm_mon + 1; 383 } 384 break; 385 default: 386 usage(); 387 } 388 389 if (flag_month != NULL) { 390 if (parsemonth(flag_month, &m, &y)) { 391 errx(EX_USAGE, 392 "%s is neither a month number (1..12) nor a name", 393 flag_month); 394 } 395 } 396 397 /* 398 * What is not supported: 399 * -3 with -A or -B 400 * -3 displays 3 months, -A and -B change that behaviour. 401 * -3 with -y 402 * -3 displays 3 months, -y says display a whole year. 403 * -3 with a given year but no given month or without -m 404 * -3 displays 3 months, no month specified doesn't make clear 405 * which three months. 406 * -m with a given month 407 * conflicting arguments, both specify the same field. 408 * -y with -m 409 * -y displays the whole year, -m displays a single month. 410 * -y with a given month 411 * -y displays the whole year, the given month displays a single 412 * month. 413 * -y with -A or -B 414 * -y displays the whole year, -A and -B display extra months. 415 */ 416 417 /* -3 together with -A or -B. */ 418 if (flag_3months && (flag_after || flag_before)) 419 errx(EX_USAGE, "-3 together with -A and -B is not supported."); 420 /* -3 together with -y. */ 421 if (flag_3months && flag_wholeyear) 422 errx(EX_USAGE, "-3 together with -y is not supported."); 423 /* -3 together with givenyear but no givenmonth. */ 424 if (flag_3months && flag_givenyear && 425 !(flag_givenmonth || flag_specifiedmonth)) 426 errx(EX_USAGE, 427 "-3 together with a given year but no given month is " 428 "not supported."); 429 /* -m together with xx xxxx. */ 430 if (flag_specifiedmonth && flag_givenmonth) 431 errx(EX_USAGE, 432 "-m together with a given month is not supported."); 433 /* -y together with -m. */ 434 if (flag_wholeyear && flag_specifiedmonth) 435 errx(EX_USAGE, "-y together with -m is not supported."); 436 /* -y together with xx xxxx. */ 437 if (flag_wholeyear && flag_givenmonth) 438 errx(EX_USAGE, "-y together a given month is not supported."); 439 /* -y together with -A or -B. */ 440 if (flag_wholeyear && (flag_before > 0 || flag_after > 0)) 441 errx(EX_USAGE, "-y together a -A or -B is not supported."); 442 /* The rest should be fine. */ 443 444 /* Select the period to display, in order of increasing priority .*/ 445 if (flag_wholeyear || 446 (flag_givenyear && !(flag_givenmonth || flag_specifiedmonth))) { 447 m = 1; 448 before = 0; 449 after = 11; 450 } 451 if (flag_givenyear && flag_givenmonth) { 452 before = 0; 453 after = 0; 454 } 455 if (flag_specifiedmonth) { 456 before = 0; 457 after = 0; 458 } 459 if (flag_before) { 460 before = flag_before; 461 } 462 if (flag_after) { 463 after = flag_after; 464 } 465 if (flag_3months) { 466 before = 1; 467 after = 1; 468 } 469 if (after == -1) 470 after = 0; 471 if (before == -1) 472 before = 0; 473 474 /* Highlight a specified day or today .*/ 475 if (flag_highlightdate != NULL) { 476 dt.y = strtol(flag_highlightdate, NULL, 10); 477 dt.m = strtol(flag_highlightdate + 5, NULL, 10); 478 dt.d = strtol(flag_highlightdate + 8, NULL, 10); 479 } else { 480 time_t t; 481 struct tm *tm1; 482 483 t = time(NULL); 484 tm1 = localtime(&t); 485 dt.y = tm1->tm_year + 1900; 486 dt.m = tm1->tm_mon + 1; 487 dt.d = tm1->tm_mday; 488 } 489 highlightdate = sndaysb(&dt); 490 491 /* And now we finally start to calculate and output calendars. */ 492 if (flag_easter) 493 printeaster(y, flag_julian_cal, flag_orthodox); 494 else 495 if (flag_backward) 496 monthrangeb(y, m, flag_julian_day, before, after); 497 else 498 monthranger(y, m, flag_julian_day, before, after); 499 return (0); 500 } 501 502 static void 503 usage(void) 504 { 505 506 fputs( 507 "Usage: cal [general options] [-hjy] [[month] year]\n" 508 " cal [general options] [-hj] [-m month] [year]\n" 509 " ncal [general options] [-hJjpwy] [-s country_code] [[month] year]\n" 510 " ncal [general options] [-hJeo] [year]\n" 511 "General options: [-NC3] [-A months] [-B months]\n" 512 "For debug the highlighting: [-H yyyy-mm-dd] [-d yyyy-mm]\n", 513 stderr); 514 exit(EX_USAGE); 515 } 516 517 /* Print the assumed switches for all countries. */ 518 static void 519 printcc(void) 520 { 521 struct djswitch *p; 522 int n; /* number of lines to print */ 523 int m; /* offset from left to right table entry on the same line */ 524 525 #define FSTR "%c%s %-15s%4d-%02d-%02d" 526 #define DFLT(p) ((p) == dftswitch ? '*' : ' ') 527 #define FSTRARG(p) DFLT(p), (p)->cc, (p)->nm, (p)->dt.y, (p)->dt.m, (p)->dt.d 528 529 n = sizeof(switches) / sizeof(struct djswitch); 530 m = (n + 1) / 2; 531 n /= 2; 532 for (p = switches; p != switches + n; p++) 533 printf(FSTR" "FSTR"\n", FSTRARG(p), FSTRARG(p+m)); 534 if (m != n) 535 printf(FSTR"\n", FSTRARG(p)); 536 } 537 538 /* Print the date of easter sunday. */ 539 static void 540 printeaster(int y, int julian, int orthodox) 541 { 542 date dt; 543 struct tm tm; 544 char buf[MAX_WIDTH]; 545 static int d_first = -1; 546 547 if (d_first < 0) 548 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 549 /* force orthodox easter for years before 1583 */ 550 if (y < 1583) 551 orthodox = 1; 552 553 if (orthodox) 554 if (julian) 555 easteroj(y, &dt); 556 else 557 easterog(y, &dt); 558 else 559 easterg(y, &dt); 560 561 memset(&tm, 0, sizeof(tm)); 562 tm.tm_year = dt.y - 1900; 563 tm.tm_mon = dt.m - 1; 564 tm.tm_mday = dt.d; 565 strftime(buf, sizeof(buf), d_first ? "%e %B %Y" : "%B %e %Y", &tm); 566 printf("%s\n", buf); 567 } 568 569 #define MW(mw, me) ((mw) + me) 570 #define DECREASEMONTH(m, y) \ 571 if (--m == 0) { \ 572 m = 12; \ 573 y--; \ 574 } 575 #define INCREASEMONTH(m, y) \ 576 if (++(m) == 13) { \ 577 (m) = 1; \ 578 (y)++; \ 579 } 580 #define M2Y(m) ((m) / 12) 581 #define M2M(m) (1 + (m) % 12) 582 583 /* Print all months for the period in the range [ before .. y-m .. after ]. */ 584 static void 585 monthrangeb(int y, int m, int jd_flag, int before, int after) 586 { 587 struct monthlines year[12]; 588 struct weekdays wds; 589 char s[MAX_WIDTH], t[MAX_WIDTH]; 590 wchar_t ws[MAX_WIDTH], ws1[MAX_WIDTH]; 591 const char *wdss; 592 int i, j; 593 int mpl; 594 int mw; 595 int m1, m2; 596 int printyearheader; 597 int prevyear = -1; 598 599 mpl = jd_flag ? 2 : 3; 600 mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; 601 wdss = (mpl == 2) ? " " : ""; 602 603 while (before != 0) { 604 DECREASEMONTH(m, y); 605 before--; 606 after++; 607 } 608 m1 = y * 12 + m - 1; 609 m2 = m1 + after; 610 611 mkweekdays(&wds); 612 613 /* 614 * The year header is printed when there are more than 'mpl' months 615 * and if the first month is a multitude of 'mpl'. 616 * If not, it will print the year behind every month. 617 */ 618 printyearheader = (after >= mpl - 1) && (M2M(m1) - 1) % mpl == 0; 619 620 m = m1; 621 while (m <= m2) { 622 int count = 0; 623 for (i = 0; i != mpl && m + i <= m2; i++) { 624 mkmonthb(M2Y(m + i), M2M(m + i) - 1, jd_flag, year + i); 625 count++; 626 } 627 628 /* Empty line between two rows of months */ 629 if (m != m1) 630 printf("\n"); 631 632 /* Year at the top. */ 633 if (printyearheader && M2Y(m) != prevyear) { 634 sprintf(s, "%d", M2Y(m)); 635 printf("%s\n", center(t, s, mpl * mw)); 636 prevyear = M2Y(m); 637 } 638 639 /* Month names. */ 640 for (i = 0; i < count; i++) 641 if (printyearheader) 642 wprintf(L"%-*ls ", 643 mw, wcenter(ws, year[i].name, mw)); 644 else { 645 swprintf(ws, sizeof(ws), L"%-ls %d", 646 year[i].name, M2Y(m + i)); 647 wprintf(L"%-*ls ", mw, wcenter(ws1, ws, mw)); 648 } 649 printf("\n"); 650 651 /* Day of the week names. */ 652 for (i = 0; i < count; i++) { 653 wprintf(L"%s%ls%s%ls%s%ls%s%ls%s%ls%s%ls%s%ls ", 654 wdss, wds.names[6], wdss, wds.names[0], 655 wdss, wds.names[1], wdss, wds.names[2], 656 wdss, wds.names[3], wdss, wds.names[4], 657 wdss, wds.names[5]); 658 } 659 printf("\n"); 660 661 /* And the days of the month. */ 662 for (i = 0; i != 6; i++) { 663 for (j = 0; j < count; j++) 664 printf("%-*s ", 665 MW(mw, year[j].extralen[i]), 666 year[j].lines[i]+1); 667 printf("\n"); 668 } 669 670 m += mpl; 671 } 672 } 673 674 static void 675 monthranger(int y, int m, int jd_flag, int before, int after) 676 { 677 struct monthlines year[12]; 678 struct weekdays wds; 679 char s[MAX_WIDTH], t[MAX_WIDTH]; 680 int i, j; 681 int mpl; 682 int mw; 683 int m1, m2; 684 int prevyear = -1; 685 int printyearheader; 686 687 mpl = jd_flag ? 3 : 4; 688 mw = jd_flag ? MONTH_WIDTH_R_J : MONTH_WIDTH_R; 689 690 while (before != 0) { 691 DECREASEMONTH(m, y); 692 before--; 693 after++; 694 } 695 m1 = y * 12 + m - 1; 696 m2 = m1 + after; 697 698 mkweekdays(&wds); 699 700 /* 701 * The year header is printed when there are more than 'mpl' months 702 * and if the first month is a multitude of 'mpl'. 703 * If not, it will print the year behind every month. 704 */ 705 printyearheader = (after >= mpl - 1) && (M2M(m1) - 1) % mpl == 0; 706 707 m = m1; 708 while (m <= m2) { 709 int count = 0; 710 for (i = 0; i != mpl && m + i <= m2; i++) { 711 mkmonthr(M2Y(m + i), M2M(m + i) - 1, jd_flag, year + i); 712 count++; 713 } 714 715 /* Empty line between two rows of months. */ 716 if (m != m1) 717 printf("\n"); 718 719 /* Year at the top. */ 720 if (printyearheader && M2Y(m) != prevyear) { 721 sprintf(s, "%d", M2Y(m)); 722 printf("%s\n", center(t, s, mpl * mw)); 723 prevyear = M2Y(m); 724 } 725 726 /* Month names. */ 727 wprintf(L" "); 728 for (i = 0; i < count; i++) 729 if (printyearheader) 730 wprintf(L"%-*ls", mw, year[i].name); 731 else 732 wprintf(L"%-ls %-*d", year[i].name, 733 mw - wcslen(year[i].name) - 1, M2Y(m + i)); 734 printf("\n"); 735 736 /* And the days of the month. */ 737 for (i = 0; i != 7; i++) { 738 /* Week day */ 739 wprintf(L"%.2ls", wds.names[i]); 740 741 /* Full months */ 742 for (j = 0; j < count; j++) 743 printf("%-*s", 744 MW(mw, year[j].extralen[i]), 745 year[j].lines[i]); 746 printf("\n"); 747 } 748 749 /* Week numbers. */ 750 if (flag_weeks) { 751 printf(" "); 752 for (i = 0; i < count; i++) 753 printf("%-*s", mw, year[i].weeks); 754 printf("\n"); 755 } 756 757 m += mpl; 758 } 759 return; 760 } 761 762 static void 763 mkmonthr(int y, int m, int jd_flag, struct monthlines *mlines) 764 { 765 766 struct tm tm; /* for strftime printing local names of 767 * months */ 768 date dt; /* handy date */ 769 int dw; /* width of numbers */ 770 int first; /* first day of month */ 771 int firstm; /* first day of first week of month */ 772 int i, j, k, l; /* just indices */ 773 int last; /* the first day of next month */ 774 int jan1 = 0; /* the first day of this year */ 775 char *ds; /* pointer to day strings (daystr or 776 * jdaystr) */ 777 778 /* Set name of month. */ 779 memset(&tm, 0, sizeof(tm)); 780 tm.tm_mon = m; 781 wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]), 782 L"%OB", &tm); 783 mlines->name[0] = towupper(mlines->name[0]); 784 785 /* 786 * Set first and last to the day number of the first day of this 787 * month and the first day of next month respectively. Set jan1 to 788 * the day number of the first day of this year. 789 */ 790 first = firstday(y, m + 1); 791 if (m == 11) 792 last = firstday(y + 1, 1); 793 else 794 last = firstday(y, m + 2); 795 796 if (jd_flag) 797 jan1 = firstday(y, 1); 798 799 /* 800 * Set firstm to the day number of monday of the first week of 801 * this month. (This might be in the last month) 802 */ 803 firstm = first - weekday(first); 804 805 /* Set ds (daystring) and dw (daywidth) according to the jd_flag. */ 806 if (jd_flag) { 807 ds = jdaystr; 808 dw = 4; 809 } else { 810 ds = daystr; 811 dw = 3; 812 } 813 814 /* 815 * Fill the lines with day of month or day of year (julian day) 816 * line index: i, each line is one weekday. column index: j, each 817 * column is one day number. print column index: k. 818 */ 819 for (i = 0; i != 7; i++) { 820 l = 0; 821 for (j = firstm + i, k = 0; j < last; j += 7, k += dw) { 822 if (j >= first) { 823 if (jd_flag) 824 dt.d = j - jan1 + 1; 825 else 826 sdater(j, &dt); 827 if (j == highlightdate && !flag_nohighlight 828 && isatty(STDOUT_FILENO)) 829 highlight(mlines->lines[i] + k, 830 ds + dt.d * dw, dw, &l); 831 else 832 memcpy(mlines->lines[i] + k + l, 833 ds + dt.d * dw, dw); 834 } else 835 memcpy(mlines->lines[i] + k + l, " ", dw); 836 } 837 mlines->lines[i][k + l] = '\0'; 838 mlines->extralen[i] = l; 839 } 840 841 /* fill the weeknumbers. */ 842 if (flag_weeks) { 843 for (j = firstm, k = 0; j < last; k += dw, j += 7) 844 if (j <= nswitch) 845 memset(mlines->weeks + k, ' ', dw); 846 else 847 memcpy(mlines->weeks + k, 848 ds + week(j, &i)*dw, dw); 849 mlines->weeks[k] = '\0'; 850 } 851 } 852 853 static void 854 mkmonthb(int y, int m, int jd_flag, struct monthlines *mlines) 855 { 856 857 struct tm tm; /* for strftime printing local names of 858 * months */ 859 date dt; /* handy date */ 860 int dw; /* width of numbers */ 861 int first; /* first day of month */ 862 int firsts; /* sunday of first week of month */ 863 int i, j, k, l; /* just indices */ 864 int jan1 = 0; /* the first day of this year */ 865 int last; /* the first day of next month */ 866 char *ds; /* pointer to day strings (daystr or 867 * jdaystr) */ 868 869 /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ 870 if (jd_flag) { 871 ds = jdaystr; 872 dw = 4; 873 } else { 874 ds = daystr; 875 dw = 3; 876 } 877 878 /* Set name of month centered. */ 879 memset(&tm, 0, sizeof(tm)); 880 tm.tm_mon = m; 881 wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]), 882 L"%OB", &tm); 883 mlines->name[0] = towupper(mlines->name[0]); 884 885 /* 886 * Set first and last to the day number of the first day of this 887 * month and the first day of next month respectively. Set jan1 to 888 * the day number of Jan 1st of this year. 889 */ 890 dt.y = y; 891 dt.m = m + 1; 892 dt.d = 1; 893 first = sndaysb(&dt); 894 if (m == 11) { 895 dt.y = y + 1; 896 dt.m = 1; 897 dt.d = 1; 898 } else { 899 dt.y = y; 900 dt.m = m + 2; 901 dt.d = 1; 902 } 903 last = sndaysb(&dt); 904 905 if (jd_flag) { 906 dt.y = y; 907 dt.m = 1; 908 dt.d = 1; 909 jan1 = sndaysb(&dt); 910 } 911 912 /* 913 * Set firsts to the day number of sunday of the first week of 914 * this month. (This might be in the last month) 915 */ 916 firsts = first - (weekday(first)+1) % 7; 917 918 /* 919 * Fill the lines with day of month or day of year (Julian day) 920 * line index: i, each line is one week. column index: j, each 921 * column is one day number. print column index: k. 922 */ 923 for (i = 0; i != 6; i++) { 924 l = 0; 925 for (j = firsts + 7 * i, k = 0; j < last && k != dw * 7; 926 j++, k += dw) { 927 if (j >= first) { 928 if (jd_flag) 929 dt.d = j - jan1 + 1; 930 else 931 sdateb(j, &dt); 932 if (j == highlightdate && !flag_nohighlight) 933 highlight(mlines->lines[i] + k, 934 ds + dt.d * dw, dw, &l); 935 else 936 memcpy(mlines->lines[i] + k + l, 937 ds + dt.d * dw, dw); 938 } else 939 memcpy(mlines->lines[i] + k + l, " ", dw); 940 } 941 if (k == 0) 942 mlines->lines[i][1] = '\0'; 943 else 944 mlines->lines[i][k + l] = '\0'; 945 mlines->extralen[i] = l; 946 } 947 } 948 949 /* Put the local names of weekdays into the wds. */ 950 static void 951 mkweekdays(struct weekdays *wds) 952 { 953 int i, len, width = 0; 954 struct tm tm; 955 wchar_t buf[20]; 956 957 memset(&tm, 0, sizeof(tm)); 958 959 for (i = 0; i != 7; i++) { 960 tm.tm_wday = (i+1) % 7; 961 wcsftime(buf, sizeof(buf), L"%a", &tm); 962 for (len = 2; len > 0; --len) { 963 if ((width = wcswidth(buf, len)) <= 2) 964 break; 965 } 966 wmemset(wds->names[i], L'\0', 4); 967 if (width == 1) 968 wds->names[i][0] = L' '; 969 wcsncat(wds->names[i], buf, len); 970 wcsncat(wds->names[i], L" ", 1); 971 } 972 } 973 974 /* 975 * Compute the day number of the first existing date after the first day in 976 * month. (the first day in month and even the month might not exist!) 977 */ 978 static int 979 firstday(int y, int m) 980 { 981 date dt; 982 int nd; 983 984 dt.y = y; 985 dt.m = m; 986 dt.d = 1; 987 nd = sndaysr(&dt); 988 for (;;) { 989 sdater(nd, &dt); 990 if ((dt.m >= m && dt.y == y) || dt.y > y) 991 return (nd); 992 else 993 nd++; 994 } 995 /* NEVER REACHED */ 996 } 997 998 /* 999 * Compute the number of days from date, obey the local switch from 1000 * Julian to Gregorian if specified by the user. 1001 */ 1002 static int 1003 sndaysr(struct date *d) 1004 { 1005 1006 if (nswitch != 0) 1007 if (nswitch < ndaysj(d)) 1008 return (ndaysg(d)); 1009 else 1010 return (ndaysj(d)); 1011 else 1012 return ndaysg(d); 1013 } 1014 1015 /* 1016 * Compute the number of days from date, obey the switch from 1017 * Julian to Gregorian as used by UK and her colonies. 1018 */ 1019 static int 1020 sndaysb(struct date *d) 1021 { 1022 1023 if (nswitchb < ndaysj(d)) 1024 return (ndaysg(d)); 1025 else 1026 return (ndaysj(d)); 1027 } 1028 1029 /* Inverse of sndays. */ 1030 static struct date * 1031 sdater(int nd, struct date *d) 1032 { 1033 1034 if (nswitch < nd) 1035 return (gdate(nd, d)); 1036 else 1037 return (jdate(nd, d)); 1038 } 1039 1040 /* Inverse of sndaysb. */ 1041 static struct date * 1042 sdateb(int nd, struct date *d) 1043 { 1044 1045 if (nswitchb < nd) 1046 return (gdate(nd, d)); 1047 else 1048 return (jdate(nd, d)); 1049 } 1050 1051 /* Center string t in string s of length w by putting enough leading blanks. */ 1052 static char * 1053 center(char *s, char *t, int w) 1054 { 1055 char blanks[MAX_WIDTH]; 1056 1057 memset(blanks, ' ', sizeof(blanks)); 1058 sprintf(s, "%.*s%s", (int)(w - strlen(t)) / 2, blanks, t); 1059 return (s); 1060 } 1061 1062 /* Center string t in string s of length w by putting enough leading blanks. */ 1063 static wchar_t * 1064 wcenter(wchar_t *s, wchar_t *t, int w) 1065 { 1066 char blanks[MAX_WIDTH]; 1067 1068 memset(blanks, ' ', sizeof(blanks)); 1069 swprintf(s, MAX_WIDTH, L"%.*s%ls", (int)(w - wcslen(t)) / 2, blanks, t); 1070 return (s); 1071 } 1072 1073 static int 1074 parsemonth(const char *s, int *m, int *y) 1075 { 1076 int nm, ny; 1077 char *cp; 1078 struct tm tm; 1079 1080 nm = (int)strtol(s, &cp, 10); 1081 if (cp != s) { 1082 ny = *y; 1083 if (*cp == '\0') { 1084 ; /* no special action */ 1085 } else if (*cp == 'f' || *cp == 'F') { 1086 if (nm <= *m) 1087 ny++; 1088 } else if (*cp == 'p' || *cp == 'P') { 1089 if (nm >= *m) 1090 ny--; 1091 } else 1092 return (1); 1093 if (nm < 1 || nm > 12) 1094 return 1; 1095 *m = nm; 1096 *y = ny; 1097 return (0); 1098 } 1099 if (strptime(s, "%B", &tm) != NULL || strptime(s, "%b", &tm) != NULL) { 1100 *m = tm.tm_mon + 1; 1101 return (0); 1102 } 1103 return (1); 1104 } 1105 1106 static void 1107 highlight(char *dst, char *src, int len, int *extralen) 1108 { 1109 static int first = 1; 1110 static const char *term_so, *term_se; 1111 1112 if (first) { 1113 char tbuf[1024], cbuf[512], *b; 1114 1115 term_se = term_so = NULL; 1116 1117 /* On how to highlight on this type of terminal (if any). */ 1118 if (isatty(STDOUT_FILENO) && tgetent(tbuf, NULL) == 1) { 1119 b = cbuf; 1120 term_so = tgetstr("so", &b); 1121 term_se = tgetstr("se", &b); 1122 } 1123 1124 first = 0; 1125 } 1126 1127 /* 1128 * This check is not necessary, should have been handled before calling 1129 * this function. 1130 */ 1131 if (flag_nohighlight) { 1132 memcpy(dst, src, len); 1133 return; 1134 } 1135 1136 /* 1137 * If it is a real terminal, use the data from the termcap database. 1138 */ 1139 if (term_so != NULL && term_se != NULL) { 1140 /* separator. */ 1141 dst[0] = ' '; 1142 dst++; 1143 /* highlight on. */ 1144 memcpy(dst, term_so, strlen(term_so)); 1145 dst += strlen(term_so); 1146 /* the actual text. (minus leading space) */ 1147 len--; 1148 src++; 1149 memcpy(dst, src, len); 1150 dst += len; 1151 /* highlight off. */ 1152 memcpy(dst, term_se, strlen(term_se)); 1153 *extralen = strlen(term_so) + strlen(term_se); 1154 return; 1155 } 1156 1157 /* 1158 * Otherwise, print a _, backspace and the letter. 1159 */ 1160 *extralen = 0; 1161 /* skip leading space. */ 1162 src++; 1163 len--; 1164 /* separator. */ 1165 dst[0] = ' '; 1166 dst++; 1167 while (len > 0) { 1168 /* _ and backspace. */ 1169 memcpy(dst, "_\010", 2); 1170 dst += 2; 1171 *extralen += 2; 1172 /* the character. */ 1173 *dst++ = *src++; 1174 len--; 1175 } 1176 return; 1177 } 1178