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 28static const char rcsid[] = 29 "$FreeBSD: src/usr.bin/ncal/ncal.c,v 1.19 2004/11/23 22:57:17 wollman Exp $"; 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 45/* Width of one month with backward compatibility */ 46#define MONTH_WIDTH_B_J 27 47#define MONTH_WIDTH_B 20 48 49#define MONTH_WIDTH_J 24 50#define MONTH_WIDTH 18 51 52#define MAX_WIDTH 28 53 54typedef struct date date; 55 56struct monthlines { 57 char name[MAX_WIDTH + 1]; 58 char lines[7][MAX_WIDTH + 1]; 59 char weeks[MAX_WIDTH + 1]; 60}; 61 62struct weekdays { 63 char *names[7]; 64}; 65 66/* The switches from Julian to Gregorian in some countries */ 67static struct djswitch { 68 const char *cc; /* Country code according to ISO 3166 */ 69 const char *nm; /* Name of country */ 70 date dt; /* Last day of Julian calendar */ 71} switches[] = { 72 {"AL", "Albania", {1912, 11, 30}}, 73 {"AT", "Austria", {1583, 10, 5}}, 74 {"AU", "Australia", {1752, 9, 2}}, 75 {"BE", "Belgium", {1582, 12, 14}}, 76 {"BG", "Bulgaria", {1916, 3, 18}}, 77 {"CA", "Canada", {1752, 9, 2}}, 78 {"CH", "Switzerland", {1655, 2, 28}}, 79 {"CN", "China", {1911, 12, 18}}, 80 {"CZ", "Czech Republic",{1584, 1, 6}}, 81 {"DE", "Germany", {1700, 2, 18}}, 82 {"DK", "Denmark", {1700, 2, 18}}, 83 {"ES", "Spain", {1582, 10, 4}}, 84 {"FI", "Finland", {1753, 2, 17}}, 85 {"FR", "France", {1582, 12, 9}}, 86 {"GB", "United Kingdom",{1752, 9, 2}}, 87 {"GR", "Greece", {1924, 3, 9}}, 88 {"HU", "Hungary", {1587, 10, 21}}, 89 {"IS", "Iceland", {1700, 11, 16}}, 90 {"IT", "Italy", {1582, 10, 4}}, 91 {"JP", "Japan", {1918, 12, 18}}, 92 {"LI", "Lithuania", {1918, 2, 1}}, 93 {"LN", "Latin", {9999, 05, 31}}, 94 {"LU", "Luxembourg", {1582, 12, 14}}, 95 {"LV", "Latvia", {1918, 2, 1}}, 96 {"NL", "Netherlands", {1582, 12, 14}}, 97 {"NO", "Norway", {1700, 2, 18}}, 98 {"PL", "Poland", {1582, 10, 4}}, 99 {"PT", "Portugal", {1582, 10, 4}}, 100 {"RO", "Romania", {1919, 3, 31}}, 101 {"RU", "Russia", {1918, 1, 31}}, 102 {"SI", "Slovenia", {1919, 3, 4}}, 103 {"SW", "Sweden", {1753, 2, 17}}, 104 {"TR", "Turkey", {1926, 12, 18}}, 105 {"US", "United States", {1752, 9, 2}}, 106 {"YU", "Yugoslavia", {1919, 3, 4}} 107}; 108 109struct djswitch *dftswitch = 110 switches + sizeof(switches) / sizeof(struct djswitch) - 2; 111 /* default switch (should be "US") */ 112 113/* Table used to print day of month and week numbers */ 114char daystr[] = " 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15" 115 " 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31" 116 " 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47" 117 " 48 49 50 51 52 53"; 118 119/* Table used to print day of year and week numbers */ 120char jdaystr[] = " 1 2 3 4 5 6 7 8 9" 121 " 10 11 12 13 14 15 16 17 18 19" 122 " 20 21 22 23 24 25 26 27 28 29" 123 " 30 31 32 33 34 35 36 37 38 39" 124 " 40 41 42 43 44 45 46 47 48 49" 125 " 50 51 52 53 54 55 56 57 58 59" 126 " 60 61 62 63 64 65 66 67 68 69" 127 " 70 71 72 73 74 75 76 77 78 79" 128 " 80 81 82 83 84 85 86 87 88 89" 129 " 90 91 92 93 94 95 96 97 98 99" 130 " 100 101 102 103 104 105 106 107 108 109" 131 " 110 111 112 113 114 115 116 117 118 119" 132 " 120 121 122 123 124 125 126 127 128 129" 133 " 130 131 132 133 134 135 136 137 138 139" 134 " 140 141 142 143 144 145 146 147 148 149" 135 " 150 151 152 153 154 155 156 157 158 159" 136 " 160 161 162 163 164 165 166 167 168 169" 137 " 170 171 172 173 174 175 176 177 178 179" 138 " 180 181 182 183 184 185 186 187 188 189" 139 " 190 191 192 193 194 195 196 197 198 199" 140 " 200 201 202 203 204 205 206 207 208 209" 141 " 210 211 212 213 214 215 216 217 218 219" 142 " 220 221 222 223 224 225 226 227 228 229" 143 " 230 231 232 233 234 235 236 237 238 239" 144 " 240 241 242 243 244 245 246 247 248 249" 145 " 250 251 252 253 254 255 256 257 258 259" 146 " 260 261 262 263 264 265 266 267 268 269" 147 " 270 271 272 273 274 275 276 277 278 279" 148 " 280 281 282 283 284 285 286 287 288 289" 149 " 290 291 292 293 294 295 296 297 298 299" 150 " 300 301 302 303 304 305 306 307 308 309" 151 " 310 311 312 313 314 315 316 317 318 319" 152 " 320 321 322 323 324 325 326 327 328 329" 153 " 330 331 332 333 334 335 336 337 338 339" 154 " 340 341 342 343 344 345 346 347 348 349" 155 " 350 351 352 353 354 355 356 357 358 359" 156 " 360 361 362 363 364 365 366"; 157 158int flag_weeks; /* user wants number of week */ 159int nswitch; /* user defined switch date */ 160int nswitchb; /* switch date for backward compatibility */ 161 162char *center(char *s, char *t, int w, int r); 163char *leftjustify(char *s, char *t, int w); 164void mkmonth(int year, int month, int jd_flag, struct monthlines * monthl); 165void mkmonthb(int year, int month, int jd_flag, struct monthlines * monthl); 166void mkweekdays(struct weekdays * wds); 167int parsemonth(const char *s); 168void printcc(void); 169void printeaster(int year, int julian, int orthodox); 170void printmonth(int year, int month, int jd_flag); 171void printmonthb(int year, int month, int jd_flag); 172void printyear(int year, int jd_flag); 173void printyearb(int year, int jd_flag); 174int firstday(int y, int m); 175date *sdate(int ndays, struct date * d); 176date *sdateb(int ndays, struct date * d); 177int sndays(struct date * d); 178int sndaysb(struct date * d); 179static void usage(void); 180int weekdayb(int nd); 181 182int 183main(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 int ch; /* holds the option character */ 189 int m = 0; /* month */ 190 int y = 0; /* year */ 191 int flag_backward = 0; /* user called cal--backward compat. */ 192 int flag_hole_year = 0; /* user wants the whole year */ 193 int flag_julian_cal = 0; /* user wants Julian Calendar */ 194 int flag_julian_day = 0; /* user wants the Julian day 195 * numbers */ 196 int flag_orthodox = 0; /* use wants Orthodox easter */ 197 int flag_easter = 0; /* use wants easter date */ 198 char *cp; /* character pointer */ 199 char *flag_month = NULL; /* requested month as string */ 200 const char *locale; /* locale to get country code */ 201 202 /* 203 * Use locale to determine the country code, 204 * and use the country code to determine the default 205 * switchdate and date format from the switches table. 206 */ 207 if (setlocale(LC_ALL, "") == NULL) 208 warn("setlocale"); 209 locale = setlocale(LC_TIME, NULL); 210 if (locale == NULL || 211 strcmp(locale, "C") == 0 || 212 strcmp(locale, "POSIX") == 0 || 213 strcmp(locale, "ASCII") == 0 || 214 strcmp(locale, "US-ASCII") == 0) 215 locale = "_US"; 216 q = switches + sizeof(switches) / sizeof(struct djswitch); 217 for (p = switches; p != q; p++) 218 if ((cp = strstr(locale, p->cc)) != NULL && *(cp - 1) == '_') 219 break; 220 if (p == q) { 221 nswitch = ndaysj(&dftswitch->dt); 222 } else { 223 nswitch = ndaysj(&p->dt); 224 dftswitch = p; 225 } 226 227 228 /* 229 * Get the filename portion of argv[0] and set flag_backward if 230 * this program is called "cal". 231 */ 232 cp = strrchr(argv[0], '/'); 233 cp = (cp == NULL) ? argv[0] : cp + 1; 234 if (strcmp("cal", cp) == 0) 235 flag_backward = 1; 236 237 /* Set the switch date to United Kingdom if backwards compatible */ 238 if (flag_backward) 239 nswitchb = ndaysj(&ukswitch); 240 241 while ((ch = getopt(argc, argv, "Jejm:ops:wy")) != -1) 242 switch (ch) { 243 case 'J': 244 if (flag_backward) 245 usage(); 246 nswitch = ndaysj(&never); 247 flag_julian_cal = 1; 248 break; 249 case 'e': 250 if (flag_backward) 251 usage(); 252 flag_easter = 1; 253 break; 254 case 'j': 255 flag_julian_day = 1; 256 break; 257 case 'm': 258 flag_month = optarg; 259 break; 260 case 'o': 261 if (flag_backward) 262 usage(); 263 flag_orthodox = 1; 264 flag_easter = 1; 265 break; 266 case 'p': 267 if (flag_backward) 268 usage(); 269 printcc(); 270 return (0); 271 break; 272 case 's': 273 if (flag_backward) 274 usage(); 275 q = switches + 276 sizeof(switches) / sizeof(struct djswitch); 277 for (p = switches; 278 p != q && strcmp(p->cc, optarg) != 0; p++) 279 ; 280 if (p == q) 281 errx(EX_USAGE, 282 "%s: invalid country code", optarg); 283 nswitch = ndaysj(&(p->dt)); 284 break; 285 case 'w': 286 if (flag_backward) 287 usage(); 288 flag_weeks = 1; 289 break; 290 case 'y': 291 flag_hole_year = 1; 292 break; 293 default: 294 usage(); 295 } 296 297 argc -= optind; 298 argv += optind; 299 300 switch (argc) { 301 case 2: 302 if (flag_easter) 303 usage(); 304 flag_month = *argv++; 305 /* FALLTHROUGH */ 306 case 1: 307 y = atoi(*argv++); 308 if (y < 1 || y > 9999) 309 errx(EX_USAGE, "year %d not in range 1..9999", y); 310 break; 311 case 0: 312 { 313 time_t t; 314 struct tm *tm; 315 316 t = time(NULL); 317 tm = localtime(&t); 318 y = tm->tm_year + 1900; 319 m = tm->tm_mon + 1; 320 } 321 break; 322 default: 323 usage(); 324 } 325 326 if (flag_month != NULL) { 327 m = parsemonth(flag_month); 328 if (m < 1 || m > 12) 329 errx(EX_USAGE, 330 "%s is neither a month number (1..12) nor a name", 331 flag_month); 332 } 333 334 if (flag_easter) 335 printeaster(y, flag_julian_cal, flag_orthodox); 336 else if (argc == 1 || flag_hole_year) 337 if (flag_backward) 338 printyearb(y, flag_julian_day); 339 else 340 printyear(y, flag_julian_day); 341 else 342 if (flag_backward) 343 printmonthb(y, m, flag_julian_day); 344 else 345 printmonth(y, m, flag_julian_day); 346 347 return (0); 348} 349 350static void 351usage(void) 352{ 353 354 fputs( 355 "usage: cal [-jy] [[month] year]\n" 356 " cal [-j] [-m month] [year]\n" 357 " ncal [-Jjpwy] [-s country_code] [[month] year]\n" 358 " ncal [-Jeo] [year]\n", stderr); 359 exit(EX_USAGE); 360} 361 362/* print the assumed switches for all countries */ 363void 364printcc(void) 365{ 366 struct djswitch *p; 367 int n; /* number of lines to print */ 368 int m; /* offset from left to right table entry on the same line */ 369 370#define FSTR "%c%s %-15s%4d-%02d-%02d" 371#define DFLT(p) ((p) == dftswitch ? '*' : ' ') 372#define FSTRARG(p) DFLT(p), (p)->cc, (p)->nm, (p)->dt.y, (p)->dt.m, (p)->dt.d 373 374 n = sizeof(switches) / sizeof(struct djswitch); 375 m = (n + 1) / 2; 376 n /= 2; 377 for (p = switches; p != switches + n; p++) 378 printf(FSTR" "FSTR"\n", FSTRARG(p), FSTRARG(p+m)); 379 if (m != n) 380 printf(FSTR"\n", FSTRARG(p)); 381} 382 383/* print the date of easter sunday */ 384void 385printeaster(int y, int julian, int orthodox) 386{ 387 date dt; 388 struct tm tm; 389 char buf[80]; 390 static int d_first = -1; 391 392 if (d_first < 0) 393 d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); 394 /* force orthodox easter for years before 1583 */ 395 if (y < 1583) 396 orthodox = 1; 397 398 if (orthodox) 399 if (julian) 400 easteroj(y, &dt); 401 else 402 easterog(y, &dt); 403 else 404 easterg(y, &dt); 405 406 memset(&tm, 0, sizeof(tm)); 407 tm.tm_year = dt.y - 1900; 408 tm.tm_mon = dt.m - 1; 409 tm.tm_mday = dt.d; 410 strftime(buf, sizeof(buf), d_first ? "%e %B %Y" : "%B %e %Y", &tm); 411 printf("%s\n", buf); 412} 413 414void 415printmonth(int y, int m, int jd_flag) 416{ 417 struct monthlines month; 418 struct weekdays wds; 419 int i; 420 421 mkmonth(y, m - 1, jd_flag, &month); 422 mkweekdays(&wds); 423 printf(" %s %d\n", month.name, y); 424 for (i = 0; i != 7; i++) { 425 printf("%s%s\n", wds.names[i], month.lines[i]); 426 free(wds.names[i]); 427 } 428 if (flag_weeks) 429 printf(" %s\n", month.weeks); 430} 431 432void 433printmonthb(int y, int m, int jd_flag) 434{ 435 struct monthlines month; 436 struct weekdays wds; 437 char s[MAX_WIDTH], t[MAX_WIDTH]; 438 int i; 439 int mw; 440 441 mkmonthb(y, m - 1, jd_flag, &month); 442 mkweekdays(&wds); 443 444 mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; 445 446 sprintf(s, "%s %d", month.name, y); 447 printf("%s\n", center(t, s, mw, 0)); 448 449 if (jd_flag) 450 printf(" %s %s %s %s %s %s %s\n", wds.names[6], 451 wds.names[0], wds.names[1], wds.names[2], wds.names[3], 452 wds.names[4], wds.names[5]); 453 else 454 printf("%s %s %s %s %s %s %s\n", wds.names[6], wds.names[0], 455 wds.names[1], wds.names[2], wds.names[3], 456 wds.names[4], wds.names[5]); 457 458 for (i = 0; i != 7; i++) 459 free(wds.names[i]); 460 for (i = 0; i != 6; i++) 461 printf("%s\n", month.lines[i]+1); 462} 463 464void 465printyear(int y, int jd_flag) 466{ 467 struct monthlines year[12]; 468 struct weekdays wds; 469 char s[80], t[80]; 470 int i, j; 471 int mpl; 472 int mw; 473 474 for (i = 0; i != 12; i++) 475 mkmonth(y, i, jd_flag, year + i); 476 mkweekdays(&wds); 477 mpl = jd_flag ? 3 : 4; 478 mw = jd_flag ? MONTH_WIDTH_J : MONTH_WIDTH; 479 480 sprintf(s, "%d", y); 481 printf("%s\n", center(t, s, mpl * mw, 0)); 482 483 for (j = 0; j != 12; j += mpl) { 484 char a[80], b[80], c[80]; 485 printf(" %s%s", 486 leftjustify(a, year[j].name, mw), 487 leftjustify(b, year[j + 1].name, mw)); 488 if (mpl == 3) 489 printf("%s\n", year[j + 2].name); 490 else 491 printf("%s%s\n", 492 leftjustify(a, year[j + 2].name, mw), 493 year[j + 3].name); 494 for (i = 0; i != 7; i++) { 495 printf("%s%s%s", 496 wds.names[i], 497 leftjustify(a, year[j].lines[i], mw), 498 leftjustify(b, year[j + 1].lines[i], mw)); 499 if (mpl == 3) 500 printf("%s\n", year[j + 2].lines[i]); 501 else 502 printf("%s%s\n", 503 leftjustify(a, year[j + 2].lines[i], mw), 504 year[j + 3].lines[i]); 505 } 506 if (flag_weeks) { 507 if (mpl == 3) 508 printf(" %s%s%s\n", 509 leftjustify(a, year[j].weeks, mw), 510 leftjustify(b, year[j + 1].weeks, mw), 511 year[j + 2].weeks); 512 else 513 printf(" %s%s%s%s\n", 514 leftjustify(a, year[j].weeks, mw), 515 leftjustify(b, year[j + 1].weeks, mw), 516 leftjustify(c, year[j + 2].weeks, mw), 517 year[j + 3].weeks); 518 } 519 } 520 for (i = 0; i != 7; i++) 521 free(wds.names[i]); 522} 523 524void 525printyearb(int y, int jd_flag) 526{ 527 struct monthlines year[12]; 528 struct weekdays wds; 529 char s[80], t[80]; 530 int i, j; 531 int mpl; 532 int mw; 533 534 for (i = 0; i != 12; i++) 535 mkmonthb(y, i, jd_flag, year + i); 536 mkweekdays(&wds); 537 mpl = jd_flag ? 2 : 3; 538 mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; 539 540 sprintf(s, "%d", y); 541 printf("%s\n\n", center(t, s, mw * mpl + mpl, 0)); 542 543 for (j = 0; j != 12; j += mpl) { 544 printf("%s ", center(s, year[j].name, mw, 1)); 545 if (mpl == 2) 546 printf("%s\n", center(s, year[j + 1].name, mw, 0)); 547 else 548 printf("%s %s\n", 549 center(s, year[j + 1].name, mw, 1), 550 center(t, year[j + 2].name, mw, 0)); 551 552 if (mpl == 2) 553 printf(" %s %s %s %s %s %s %s " 554 " %s %s %s %s %s %s %s\n", 555 wds.names[6], wds.names[0], wds.names[1], 556 wds.names[2], wds.names[3], wds.names[4], 557 wds.names[5], 558 wds.names[6], wds.names[0], wds.names[1], 559 wds.names[2], wds.names[3], wds.names[4], 560 wds.names[5]); 561 else 562 printf("%s %s %s %s %s %s %s " 563 "%s %s %s %s %s %s %s " 564 "%s %s %s %s %s %s %s\n", 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 wds.names[6], wds.names[0], wds.names[1], 569 wds.names[2], wds.names[3], wds.names[4], 570 wds.names[5], 571 wds.names[6], wds.names[0], wds.names[1], 572 wds.names[2], wds.names[3], wds.names[4], 573 wds.names[5]); 574 for (i = 0; i != 6; i++) { 575 if (mpl == 2) 576 printf("%-*s %s\n", 577 mw, year[j].lines[i]+1, 578 year[j + 1].lines[i]+1); 579 else 580 printf("%-*s %-*s %s\n", 581 mw, year[j].lines[i]+1, 582 mw, year[j + 1].lines[i]+1, 583 year[j + 2].lines[i]+1); 584 585 } 586 } 587 for (i = 0; i != 7; i++) 588 free(wds.names[i]); 589} 590 591void 592mkmonth(int y, int m, int jd_flag, struct monthlines *mlines) 593{ 594 595 struct tm tm; /* for strftime printing local names of 596 * months */ 597 date dt; /* handy date */ 598 int dw; /* width of numbers */ 599 int first; /* first day of month */ 600 int firstm; /* first day of first week of month */ 601 int i, j, k; /* just indices */ 602 int last; /* the first day of next month */ 603 int jan1 = 0; /* the first day of this year */ 604 char *ds; /* pointer to day strings (daystr or 605 * jdaystr) */ 606 wchar_t *wcs; 607 int len; 608 609 /* Set name of month. */ 610 memset(&tm, 0, sizeof(tm)); 611 tm.tm_mon = m; 612 strftime(mlines->name, sizeof(mlines->name), "%B", &tm); 613 614 len = mbstowcs(NULL, mlines->name, 0); 615 wcs = calloc(len + 1, sizeof(wchar_t)); 616 mbstowcs(wcs, mlines->name, len); 617 wcs[0] = towupper(wcs[0]); 618 wcstombs(mlines->name, wcs, sizeof(mlines->name)); 619 free(wcs); 620 621 /* 622 * Set first and last to the day number of the first day of this 623 * month and the first day of next month respectively. Set jan1 to 624 * the day number of the first day of this year. 625 */ 626 first = firstday(y, m + 1); 627 if (m == 11) 628 last = firstday(y + 1, 1); 629 else 630 last = firstday(y, m + 2); 631 632 if (jd_flag) 633 jan1 = firstday(y, 1); 634 635 /* 636 * Set firstm to the day number of monday of the first week of 637 * this month. (This might be in the last month) 638 */ 639 firstm = first - weekday(first); 640 641 /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ 642 if (jd_flag) { 643 ds = jdaystr; 644 dw = 4; 645 } else { 646 ds = daystr; 647 dw = 3; 648 } 649 650 /* 651 * Fill the lines with day of month or day of year (julian day) 652 * line index: i, each line is one weekday. column index: j, each 653 * column is one day number. print column index: k. 654 */ 655 for (i = 0; i != 7; i++) { 656 for (j = firstm + i, k = 0; j < last; j += 7, k += dw) 657 if (j >= first) { 658 if (jd_flag) 659 dt.d = j - jan1 + 1; 660 else 661 sdate(j, &dt); 662 memcpy(mlines->lines[i] + k, 663 ds + dt.d * dw, dw); 664 } else 665 memcpy(mlines->lines[i] + k, " ", dw); 666 mlines->lines[i][k] = '\0'; 667 668 } 669 670 /* fill the weeknumbers */ 671 if (flag_weeks) { 672 for (j = firstm, k = 0; j < last; k += dw, j += 7) 673 if (j <= nswitch) 674 memset(mlines->weeks + k, ' ', dw); 675 else 676 memcpy(mlines->weeks + k, 677 ds + week(j, &i)*dw, dw); 678 mlines->weeks[k] = '\0'; 679 } 680} 681 682void 683mkmonthb(int y, int m, int jd_flag, struct monthlines *mlines) 684{ 685 686 struct tm tm; /* for strftime printing local names of 687 * months */ 688 date dt; /* handy date */ 689 int dw; /* width of numbers */ 690 int first; /* first day of month */ 691 int firsts; /* sunday of first week of month */ 692 int i, j, k; /* just indices */ 693 int jan1 = 0; /* the first day of this year */ 694 int last; /* the first day of next month */ 695 char *ds; /* pointer to day strings (daystr or 696 * jdaystr) */ 697 698 /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ 699 if (jd_flag) { 700 ds = jdaystr; 701 dw = 4; 702 } else { 703 ds = daystr; 704 dw = 3; 705 } 706 707 /* Set name of month centered */ 708 memset(&tm, 0, sizeof(tm)); 709 tm.tm_mon = m; 710 strftime(mlines->name, sizeof(mlines->name), "%B", &tm); 711 712 wchar_t ws[MAX_WIDTH+1]; 713 size_t len = mbstowcs(ws, mlines->name, MAX_WIDTH); 714 if (len != -1) { 715 ws[0] = towupper(ws[0]); 716 (void)wcstombs(mlines->name, ws, sizeof(mlines->name)); 717 } 718 719 /* 720 * Set first and last to the day number of the first day of this 721 * month and the first day of next month respectively. Set jan1 to 722 * the day number of Jan 1st of this year. 723 */ 724 dt.y = y; 725 dt.m = m + 1; 726 dt.d = 1; 727 first = sndaysb(&dt); 728 if (m == 11) { 729 dt.y = y + 1; 730 dt.m = 1; 731 dt.d = 1; 732 } else { 733 dt.y = y; 734 dt.m = m + 2; 735 dt.d = 1; 736 } 737 last = sndaysb(&dt); 738 739 if (jd_flag) { 740 dt.y = y; 741 dt.m = 1; 742 dt.d = 1; 743 jan1 = sndaysb(&dt); 744 } 745 746 /* 747 * Set firsts to the day number of sunday of the first week of 748 * this month. (This might be in the last month) 749 */ 750 firsts = first - (weekday(first)+1) % 7; 751 752 /* 753 * Fill the lines with day of month or day of year (Julian day) 754 * line index: i, each line is one week. column index: j, each 755 * column is one day number. print column index: k. 756 */ 757 for (i = 0; i != 6; i++) { 758 for (j = firsts + 7 * i, k = 0; j < last && k != dw * 7; 759 j++, k += dw) 760 if (j >= first) { 761 if (jd_flag) 762 dt.d = j - jan1 + 1; 763 else 764 sdateb(j, &dt); 765 memcpy(mlines->lines[i] + k, 766 ds + dt.d * dw, dw); 767 } else 768 memcpy(mlines->lines[i] + k, " ", dw); 769 if (k == 0) 770 mlines->lines[i][1] = '\0'; 771 else 772 mlines->lines[i][k] = '\0'; 773 } 774} 775 776/* Put the local names of weekdays into the wds */ 777void 778mkweekdays(struct weekdays *wds) 779{ 780 int i, len; 781 struct tm tm; 782 char buf[20]; 783 int j, col; 784 wchar_t *wcs; 785 786 memset(&tm, 0, sizeof(tm)); 787 788 for (i = 0; i != 7; i++) { 789 tm.tm_wday = (i+1) % 7; 790 strftime(buf, sizeof(buf), "%a", &tm); 791 792 len = mbstowcs(NULL, buf, 0); 793 wcs = calloc(len + 1, sizeof(wchar_t)); 794 mbstowcs(wcs, buf, len); 795 for (j = 0; j < len; j++) 796 if (wcswidth(wcs, j + 1) >= 2) 797 break; 798 wcs[j + 1] = 0; 799 800 col = wcswidth(wcs, j + 1); 801 len = wcstombs(NULL, wcs, 0); 802 wds->names[i] = calloc(len + 2 - col + 1, sizeof(char)); 803 wcstombs(wds->names[i], wcs, len); 804 free(wcs); 805 if (col < 2) 806 strcat(wds->names[i], " "); 807 } 808} 809 810/* 811 * Compute the day number of the first 812 * existing date after the first day in month. 813 * (the first day in month and even the month might not exist!) 814 */ 815int 816firstday(int y, int m) 817{ 818 date dt; 819 int nd; 820 821 dt.y = y; 822 dt.m = m; 823 dt.d = 1; 824 nd = sndays(&dt); 825 for (;;) { 826 sdate(nd, &dt); 827 if ((dt.m >= m && dt.y == y) || dt.y > y) 828 return (nd); 829 else 830 nd++; 831 } 832 /* NEVER REACHED */ 833} 834 835/* 836 * Compute the number of days from date, obey the local switch from 837 * Julian to Gregorian if specified by the user. 838 */ 839int 840sndays(struct date *d) 841{ 842 843 if (nswitch != 0) 844 if (nswitch < ndaysj(d)) 845 return (ndaysg(d)); 846 else 847 return (ndaysj(d)); 848 else 849 return ndaysg(d); 850} 851 852/* 853 * Compute the number of days from date, obey the switch from 854 * Julian to Gregorian as used by UK and her colonies. 855 */ 856int 857sndaysb(struct date *d) 858{ 859 860 if (nswitchb < ndaysj(d)) 861 return (ndaysg(d)); 862 else 863 return (ndaysj(d)); 864} 865 866/* Inverse of sndays */ 867struct date * 868sdate(int nd, struct date *d) 869{ 870 871 if (nswitch < nd) 872 return (gdate(nd, d)); 873 else 874 return (jdate(nd, d)); 875} 876 877/* Inverse of sndaysb */ 878struct date * 879sdateb(int nd, struct date *d) 880{ 881 882 if (nswitchb < nd) 883 return (gdate(nd, d)); 884 else 885 return (jdate(nd, d)); 886} 887 888/* Returns the number of display columns for the string */ 889int 890displaywidth(char* s) 891{ 892 wchar_t *wcs; 893 int res; 894 int len = mbstowcs(NULL, s, 0); 895 wcs = calloc(len + 1, sizeof(wchar_t)); 896 mbstowcs(wcs, s, len); 897 res = wcswidth(wcs, len); 898 free(wcs); 899 return res; 900} 901 902/* Center string t in string s of length w by putting enough leading blanks */ 903/* if r is true, also print spaces on the right side */ 904char * 905center(char *s, char *t, int w, int r) 906{ 907 char blanks[80]; 908 909 memset(blanks, ' ', sizeof(blanks)); 910 911 int width = displaywidth(t); 912 int leading = (w - width) / 2; 913 int trailing = r ? (w - width - leading) : 0; 914 sprintf(s, "%.*s%s%.*s", leading, blanks, t, trailing, blanks); 915 return (s); 916} 917 918char* 919leftjustify(char *s, char *t, int w) 920{ 921 char blanks[80]; 922 923 memset(blanks, ' ', sizeof(blanks)); 924 925 int width = displaywidth(t); 926 int trailing = (w - width); 927 sprintf(s, "%s%.*s", t, trailing, blanks); 928 return (s); 929} 930 931int 932parsemonth(const char *s) 933{ 934 int v; 935 char *cp; 936 struct tm tm; 937 938 v = (int)strtol(s, &cp, 10); 939 if (cp != s) 940 return (v); 941 if (strptime(s, "%B", &tm) != NULL) 942 return (tm.tm_mon + 1); 943 if (strptime(s, "%b", &tm) != NULL) 944 return (tm.tm_mon + 1); 945 return (0); 946} 947