2 * Copyright (c) 1997 Wolfgang Helbig
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
28 static const char rcsid[] =
47 #undef lines /* term.h defines this */
49 /* Width of one month with backward compatibility and in regular mode*/
50 #define MONTH_WIDTH_B_J 27
51 #define MONTH_WIDTH_B 20
53 #define MONTH_WIDTH_R_J 24
54 #define MONTH_WIDTH_R 18
58 typedef struct date date;
61 wchar_t name[MAX_WIDTH + 1];
62 char lines[7][MAX_WIDTH + 1];
63 char weeks[MAX_WIDTH + 1];
64 unsigned int extralen[7];
71 /* The switches from Julian to Gregorian in some countries */
72 static struct djswitch {
73 const char *cc; /* Country code according to ISO 3166 */
74 const char *nm; /* Name of country */
75 date dt; /* Last day of Julian calendar */
77 {"AL", "Albania", {1912, 11, 30}},
78 {"AT", "Austria", {1583, 10, 5}},
79 {"AU", "Australia", {1752, 9, 2}},
80 {"BE", "Belgium", {1582, 12, 14}},
81 {"BG", "Bulgaria", {1916, 3, 18}},
82 {"CA", "Canada", {1752, 9, 2}},
83 {"CH", "Switzerland", {1655, 2, 28}},
84 {"CN", "China", {1911, 12, 18}},
85 {"CZ", "Czech Republic",{1584, 1, 6}},
86 {"DE", "Germany", {1700, 2, 18}},
87 {"DK", "Denmark", {1700, 2, 18}},
88 {"ES", "Spain", {1582, 10, 4}},
89 {"FI", "Finland", {1753, 2, 17}},
90 {"FR", "France", {1582, 12, 9}},
91 {"GB", "United Kingdom",{1752, 9, 2}},
92 {"GR", "Greece", {1924, 3, 9}},
93 {"HU", "Hungary", {1587, 10, 21}},
94 {"IS", "Iceland", {1700, 11, 16}},
95 {"IT", "Italy", {1582, 10, 4}},
96 {"JP", "Japan", {1918, 12, 18}},
97 {"LI", "Lithuania", {1918, 2, 1}},
98 {"LN", "Latin", {9999, 05, 31}},
99 {"LU", "Luxembourg", {1582, 12, 14}},
100 {"LV", "Latvia", {1918, 2, 1}},
101 {"NL", "Netherlands", {1582, 12, 14}},
102 {"NO", "Norway", {1700, 2, 18}},
103 {"PL", "Poland", {1582, 10, 4}},
104 {"PT", "Portugal", {1582, 10, 4}},
105 {"RO", "Romania", {1919, 3, 31}},
106 {"RU", "Russia", {1918, 1, 31}},
107 {"SI", "Slovenia", {1919, 3, 4}},
108 {"SW", "Sweden", {1753, 2, 17}},
109 {"TR", "Turkey", {1926, 12, 18}},
110 {"US", "United States", {1752, 9, 2}},
111 {"YU", "Yugoslavia", {1919, 3, 4}}
114 struct djswitch *dftswitch =
115 switches + sizeof(switches) / sizeof(struct djswitch) - 2;
116 /* default switch (should be "US") */
118 /* Table used to print day of month and week numbers */
119 char daystr[] = " 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15"
120 " 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31"
121 " 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47"
122 " 48 49 50 51 52 53";
124 /* Table used to print day of year and week numbers */
125 char jdaystr[] = " 1 2 3 4 5 6 7 8 9"
126 " 10 11 12 13 14 15 16 17 18 19"
127 " 20 21 22 23 24 25 26 27 28 29"
128 " 30 31 32 33 34 35 36 37 38 39"
129 " 40 41 42 43 44 45 46 47 48 49"
130 " 50 51 52 53 54 55 56 57 58 59"
131 " 60 61 62 63 64 65 66 67 68 69"
132 " 70 71 72 73 74 75 76 77 78 79"
133 " 80 81 82 83 84 85 86 87 88 89"
134 " 90 91 92 93 94 95 96 97 98 99"
135 " 100 101 102 103 104 105 106 107 108 109"
136 " 110 111 112 113 114 115 116 117 118 119"
137 " 120 121 122 123 124 125 126 127 128 129"
138 " 130 131 132 133 134 135 136 137 138 139"
139 " 140 141 142 143 144 145 146 147 148 149"
140 " 150 151 152 153 154 155 156 157 158 159"
141 " 160 161 162 163 164 165 166 167 168 169"
142 " 170 171 172 173 174 175 176 177 178 179"
143 " 180 181 182 183 184 185 186 187 188 189"
144 " 190 191 192 193 194 195 196 197 198 199"
145 " 200 201 202 203 204 205 206 207 208 209"
146 " 210 211 212 213 214 215 216 217 218 219"
147 " 220 221 222 223 224 225 226 227 228 229"
148 " 230 231 232 233 234 235 236 237 238 239"
149 " 240 241 242 243 244 245 246 247 248 249"
150 " 250 251 252 253 254 255 256 257 258 259"
151 " 260 261 262 263 264 265 266 267 268 269"
152 " 270 271 272 273 274 275 276 277 278 279"
153 " 280 281 282 283 284 285 286 287 288 289"
154 " 290 291 292 293 294 295 296 297 298 299"
155 " 300 301 302 303 304 305 306 307 308 309"
156 " 310 311 312 313 314 315 316 317 318 319"
157 " 320 321 322 323 324 325 326 327 328 329"
158 " 330 331 332 333 334 335 336 337 338 339"
159 " 340 341 342 343 344 345 346 347 348 349"
160 " 350 351 352 353 354 355 356 357 358 359"
161 " 360 361 362 363 364 365 366";
163 int flag_nohighlight; /* user doesn't want a highlighted today */
164 int flag_weeks; /* user wants number of week */
165 int nswitch; /* user defined switch date */
166 int nswitchb; /* switch date for backward compatibility */
169 char *center(char *s, char *t, int w);
170 wchar_t *wcenter(wchar_t *s, wchar_t *t, int w);
171 int firstday(int y, int m);
172 void highlight(char *dst, char *src, int len, int *extraletters);
173 void mkmonthr(int year, int month, int jd_flag, struct monthlines * monthl);
174 void mkmonthb(int year, int month, int jd_flag, struct monthlines * monthl);
175 void mkweekdays(struct weekdays * wds);
176 void monthranger(int year, int m, int jd_flag, int before, int after);
177 void monthrangeb(int year, int m, int jd_flag, int before, int after);
178 int parsemonth(const char *s, int *m, int *y);
180 void printeaster(int year, int julian, int orthodox);
181 date *sdater(int ndays, struct date * d);
182 date *sdateb(int ndays, struct date * d);
183 int sndaysr(struct date * d);
184 int sndaysb(struct date * d);
185 static void usage(void);
188 main(int argc, char *argv[])
190 struct djswitch *p, *q; /* to search user defined switch date */
191 date never = {10000, 1, 1}; /* outside valid range of dates */
192 date ukswitch = {1752, 9, 2};/* switch date for Great Britain */
194 int ch; /* holds the option character */
195 int m = 0; /* month */
196 int y = 0; /* year */
197 int flag_backward = 0; /* user called cal--backward compat. */
198 int flag_wholeyear = 0; /* user wants the whole year */
199 int flag_julian_cal = 0; /* user wants Julian Calendar */
200 int flag_julian_day = 0; /* user wants the Julian day numbers */
201 int flag_orthodox = 0; /* user wants Orthodox easter */
202 int flag_easter = 0; /* user wants easter date */
203 int flag_3months = 0; /* user wants 3 month display (-3) */
204 int flag_after = 0; /* user wants to see months after */
205 int flag_before = 0; /* user wants to see months before */
206 int flag_specifiedmonth = 0;/* user wants to see this month (-m) */
207 int flag_givenmonth = 0; /* user has specified month [n] */
208 int flag_givenyear = 0; /* user has specified year [n] */
209 char *cp; /* character pointer */
210 char *flag_today = NULL; /* debug: use date as being today */
211 char *flag_month = NULL; /* requested month as string */
212 char *flag_highlightdate = NULL; /* debug: date to highlight */
214 const char *locale; /* locale to get country code */
216 flag_nohighlight = 0;
220 * Use locale to determine the country code,
221 * and use the country code to determine the default
222 * switchdate and date format from the switches table.
224 if (setlocale(LC_ALL, "") == NULL)
226 locale = setlocale(LC_TIME, NULL);
227 if (locale == NULL ||
228 strcmp(locale, "C") == 0 ||
229 strcmp(locale, "POSIX") == 0 ||
230 strcmp(locale, "ASCII") == 0 ||
231 strcmp(locale, "US-ASCII") == 0)
233 q = switches + sizeof(switches) / sizeof(struct djswitch);
234 for (p = switches; p != q; p++)
235 if ((cp = strstr(locale, p->cc)) != NULL && *(cp - 1) == '_')
238 nswitch = ndaysj(&dftswitch->dt);
240 nswitch = ndaysj(&p->dt);
246 * Get the filename portion of argv[0] and set flag_backward if
247 * this program is called "cal".
249 if (strncmp(basename(argv[0]), "cal", strlen("cal")) == 0)
252 /* Set the switch date to United Kingdom if backwards compatible */
254 nswitchb = ndaysj(&ukswitch);
258 while ((ch = getopt(argc, argv, "3A:B:Cd:eH:hjJm:Nops:wy")) != -1)
265 errx(EX_USAGE, "Double -A specified");
266 flag_after = strtol(optarg, NULL, 10);
269 "Argument to -A must be positive");
273 errx(EX_USAGE, "Double -A specified");
274 flag_before = strtol(optarg, NULL, 10);
275 if (flag_before <= 0)
277 "Argument to -B must be positive");
282 nswitch = ndaysj(&never);
295 flag_highlightdate = optarg;
298 flag_nohighlight = 1;
309 if (flag_specifiedmonth)
310 errx(EX_USAGE, "Double -m specified");
312 flag_specifiedmonth = 1;
330 sizeof(switches) / sizeof(struct djswitch);
332 p != q && strcmp(p->cc, optarg) != 0; p++)
336 "%s: invalid country code", optarg);
337 nswitch = ndaysj(&(p->dt));
358 flag_month = *argv++;
360 m = strtol(flag_month, NULL, 10);
364 if (y < 1 || y > 9999)
365 errx(EX_USAGE, "year `%s' not in range 1..9999", *argv);
370 if (flag_today != NULL) {
371 y = strtol(flag_today, NULL, 10);
372 m = strtol(flag_today + 5, NULL, 10);
379 y = tm->tm_year + 1900;
387 if (flag_month != NULL) {
388 if (parsemonth(flag_month, &m, &y)) {
390 "%s is neither a month number (1..12) nor a name",
396 * What is not supported:
398 * -3 displays 3 months, -A and -B change that behaviour.
400 * -3 displays 3 months, -y says display a whole year.
401 * -3 with a given year but no given month or without -m
402 * -3 displays 3 months, no month specified doesn't make clear
403 * which three months.
404 * -m with a given month
405 * conflicting arguments, both specify the same field.
407 * -y displays the whole year, -m displays a single month.
408 * -y with a given month
409 * -y displays the whole year, the given month displays a single
412 * -y displays the whole year, -A and -B display extra months.
415 /* -3 together with -A or -B. */
416 if (flag_3months && (flag_after || flag_before))
417 errx(EX_USAGE, "-3 together with -A and -B is not supported.");
418 /* -3 together with -y. */
419 if (flag_3months && flag_wholeyear)
420 errx(EX_USAGE, "-3 together with -y is not supported.");
421 /* -3 together with givenyear but no givenmonth. */
422 if (flag_3months && flag_givenyear &&
423 !(flag_givenmonth || flag_specifiedmonth))
425 "-3 together with a given year but no given month is "
427 /* -m together with xx xxxx. */
428 if (flag_specifiedmonth && flag_givenmonth)
430 "-m together with a given month is not supported.");
431 /* -y together with -m. */
432 if (flag_wholeyear && flag_specifiedmonth)
433 errx(EX_USAGE, "-y together with -m is not supported.");
434 /* -y together with xx xxxx. */
435 if (flag_wholeyear && flag_givenmonth)
436 errx(EX_USAGE, "-y together a given month is not supported.");
437 /* -y together with -A or -B. */
438 if (flag_wholeyear && (flag_before > 0 || flag_after > 0))
439 errx(EX_USAGE, "-y together a -A or -B is not supported.");
440 /* The rest should be fine. */
442 /* Select the period to display, in order of increasing priority .*/
443 if (flag_wholeyear ||
444 (flag_givenyear && !(flag_givenmonth || flag_specifiedmonth))) {
449 if (flag_givenyear && flag_givenmonth) {
453 if (flag_specifiedmonth) {
458 before = flag_before;
472 /* Highlight a specified day or today .*/
473 if (flag_highlightdate != NULL) {
474 dt.y = strtol(flag_highlightdate, NULL, 10);
475 dt.m = strtol(flag_highlightdate + 5, NULL, 10);
476 dt.d = strtol(flag_highlightdate + 8, NULL, 10);
483 dt.y = tm1->tm_year + 1900;
484 dt.m = tm1->tm_mon + 1;
487 highlightdate = sndaysb(&dt);
489 /* And now we finally start to calculate and output calendars. */
491 printeaster(y, flag_julian_cal, flag_orthodox);
494 monthrangeb(y, m, flag_julian_day, before, after);
496 monthranger(y, m, flag_julian_day, before, after);
505 "Usage: cal [general options] [-hjy] [[month] year]\n"
506 " cal [general options] [-hj] [-m month] [year]\n"
507 " ncal [general options] [-hJjpwy] [-s country_code] [[month] year]\n"
508 " ncal [general options] [-hJeo] [year]\n"
509 "General options: [-NC3] [-A months] [-B months]\n"
510 "For debug the highlighting: [-H yyyy-mm-dd] [-d yyyy-mm]\n",
515 /* Print the assumed switches for all countries. */
520 int n; /* number of lines to print */
521 int m; /* offset from left to right table entry on the same line */
523 #define FSTR "%c%s %-15s%4d-%02d-%02d"
524 #define DFLT(p) ((p) == dftswitch ? '*' : ' ')
525 #define FSTRARG(p) DFLT(p), (p)->cc, (p)->nm, (p)->dt.y, (p)->dt.m, (p)->dt.d
527 n = sizeof(switches) / sizeof(struct djswitch);
530 for (p = switches; p != switches + n; p++)
531 printf(FSTR" "FSTR"\n", FSTRARG(p), FSTRARG(p+m));
533 printf(FSTR"\n", FSTRARG(p));
536 /* Print the date of easter sunday. */
538 printeaster(int y, int julian, int orthodox)
543 static int d_first = -1;
546 d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
547 /* force orthodox easter for years before 1583 */
559 memset(&tm, 0, sizeof(tm));
560 tm.tm_year = dt.y - 1900;
561 tm.tm_mon = dt.m - 1;
563 strftime(buf, sizeof(buf), d_first ? "%e %B %Y" : "%B %e %Y", &tm);
567 #define MW(mw, me) ((mw) + me)
568 #define DECREASEMONTH(m, y) \
573 #define INCREASEMONTH(m, y) \
578 #define M2Y(m) ((m) / 12)
579 #define M2M(m) (1 + (m) % 12)
581 /* Print all months for the period in the range [ before .. y-m .. after ]. */
583 monthrangeb(int y, int m, int jd_flag, int before, int after)
585 struct monthlines year[12];
587 char s[MAX_WIDTH], t[MAX_WIDTH];
588 wchar_t ws[MAX_WIDTH], ws1[MAX_WIDTH];
597 mpl = jd_flag ? 2 : 3;
598 mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B;
599 wdss = (mpl == 2) ? " " : "";
601 while (before != 0) {
612 * The year header is printed when there are more than 'mpl' months
613 * and if the first month is a multitude of 'mpl'.
614 * If not, it will print the year behind every month.
616 printyearheader = (after >= mpl - 1) && (M2M(m1) - 1) % mpl == 0;
621 for (i = 0; i != mpl && m + i <= m2; i++) {
622 mkmonthb(M2Y(m + i), M2M(m + i) - 1, jd_flag, year + i);
626 /* Empty line between two rows of months */
630 /* Year at the top. */
631 if (printyearheader && M2Y(m) != prevyear) {
632 sprintf(s, "%d", M2Y(m));
633 printf("%s\n", center(t, s, mpl * mw));
638 for (i = 0; i < count; i++)
641 mw, wcenter(ws, year[i].name, mw));
643 swprintf(ws, sizeof(ws), L"%-ls %d",
644 year[i].name, M2Y(m + i));
645 wprintf(L"%-*ls ", mw, wcenter(ws1, ws, mw));
649 /* Day of the week names. */
650 for (i = 0; i < count; i++) {
651 wprintf(L"%s%ls%s%ls%s%ls%s%ls%s%ls%s%ls%s%ls ",
652 wdss, wds.names[6], wdss, wds.names[0],
653 wdss, wds.names[1], wdss, wds.names[2],
654 wdss, wds.names[3], wdss, wds.names[4],
659 /* And the days of the month. */
660 for (i = 0; i != 6; i++) {
661 for (j = 0; j < count; j++)
663 MW(mw, year[j].extralen[i]),
673 monthranger(int y, int m, int jd_flag, int before, int after)
675 struct monthlines year[12];
677 char s[MAX_WIDTH], t[MAX_WIDTH];
685 mpl = jd_flag ? 3 : 4;
686 mw = jd_flag ? MONTH_WIDTH_R_J : MONTH_WIDTH_R;
688 while (before != 0) {
699 * The year header is printed when there are more than 'mpl' months
700 * and if the first month is a multitude of 'mpl'.
701 * If not, it will print the year behind every month.
703 printyearheader = (after >= mpl - 1) && (M2M(m1) - 1) % mpl == 0;
708 for (i = 0; i != mpl && m + i <= m2; i++) {
709 mkmonthr(M2Y(m + i), M2M(m + i) - 1, jd_flag, year + i);
713 /* Empty line between two rows of months. */
717 /* Year at the top. */
718 if (printyearheader && M2Y(m) != prevyear) {
719 sprintf(s, "%d", M2Y(m));
720 printf("%s\n", center(t, s, mpl * mw));
726 for (i = 0; i < count; i++)
728 wprintf(L"%-*ls", mw, year[i].name);
730 wprintf(L"%-ls %-*d", year[i].name,
731 mw - wcslen(year[i].name) - 1, M2Y(m + i));
734 /* And the days of the month. */
735 for (i = 0; i != 7; i++) {
737 wprintf(L"%.2ls", wds.names[i]);
740 for (j = 0; j < count; j++)
742 MW(mw, year[j].extralen[i]),
750 for (i = 0; i < count; i++)
751 printf("%-*s", mw, year[i].weeks);
761 mkmonthr(int y, int m, int jd_flag, struct monthlines *mlines)
764 struct tm tm; /* for strftime printing local names of
766 date dt; /* handy date */
767 int dw; /* width of numbers */
768 int first; /* first day of month */
769 int firstm; /* first day of first week of month */
770 int i, j, k, l; /* just indices */
771 int last; /* the first day of next month */
772 int jan1 = 0; /* the first day of this year */
773 char *ds; /* pointer to day strings (daystr or
776 /* Set name of month. */
777 memset(&tm, 0, sizeof(tm));
779 wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]),
781 mlines->name[0] = towupper(mlines->name[0]);
784 * Set first and last to the day number of the first day of this
785 * month and the first day of next month respectively. Set jan1 to
786 * the day number of the first day of this year.
788 first = firstday(y, m + 1);
790 last = firstday(y + 1, 1);
792 last = firstday(y, m + 2);
795 jan1 = firstday(y, 1);
798 * Set firstm to the day number of monday of the first week of
799 * this month. (This might be in the last month)
801 firstm = first - weekday(first);
803 /* Set ds (daystring) and dw (daywidth) according to the jd_flag. */
813 * Fill the lines with day of month or day of year (julian day)
814 * line index: i, each line is one weekday. column index: j, each
815 * column is one day number. print column index: k.
817 for (i = 0; i != 7; i++) {
819 for (j = firstm + i, k = 0; j < last; j += 7, k += dw) {
825 if (j == highlightdate && !flag_nohighlight)
826 highlight(mlines->lines[i] + k,
827 ds + dt.d * dw, dw, &l);
829 memcpy(mlines->lines[i] + k + l,
832 memcpy(mlines->lines[i] + k + l, " ", dw);
834 mlines->lines[i][k + l] = '\0';
835 mlines->extralen[i] = l;
838 /* fill the weeknumbers. */
840 for (j = firstm, k = 0; j < last; k += dw, j += 7)
842 memset(mlines->weeks + k, ' ', dw);
844 memcpy(mlines->weeks + k,
845 ds + week(j, &i)*dw, dw);
846 mlines->weeks[k] = '\0';
851 mkmonthb(int y, int m, int jd_flag, struct monthlines *mlines)
854 struct tm tm; /* for strftime printing local names of
856 date dt; /* handy date */
857 int dw; /* width of numbers */
858 int first; /* first day of month */
859 int firsts; /* sunday of first week of month */
860 int i, j, k, l; /* just indices */
861 int jan1 = 0; /* the first day of this year */
862 int last; /* the first day of next month */
863 char *ds; /* pointer to day strings (daystr or
866 /* Set ds (daystring) and dw (daywidth) according to the jd_flag */
875 /* Set name of month centered. */
876 memset(&tm, 0, sizeof(tm));
878 wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]),
880 mlines->name[0] = towupper(mlines->name[0]);
883 * Set first and last to the day number of the first day of this
884 * month and the first day of next month respectively. Set jan1 to
885 * the day number of Jan 1st of this year.
890 first = sndaysb(&dt);
910 * Set firsts to the day number of sunday of the first week of
911 * this month. (This might be in the last month)
913 firsts = first - (weekday(first)+1) % 7;
916 * Fill the lines with day of month or day of year (Julian day)
917 * line index: i, each line is one week. column index: j, each
918 * column is one day number. print column index: k.
920 for (i = 0; i != 6; i++) {
922 for (j = firsts + 7 * i, k = 0; j < last && k != dw * 7;
929 if (j == highlightdate && !flag_nohighlight)
930 highlight(mlines->lines[i] + k,
931 ds + dt.d * dw, dw, &l);
933 memcpy(mlines->lines[i] + k + l,
936 memcpy(mlines->lines[i] + k + l, " ", dw);
939 mlines->lines[i][1] = '\0';
941 mlines->lines[i][k + l] = '\0';
942 mlines->extralen[i] = l;
946 /* Put the local names of weekdays into the wds. */
948 mkweekdays(struct weekdays *wds)
950 int i, len, width = 0;
954 memset(&tm, 0, sizeof(tm));
956 for (i = 0; i != 7; i++) {
957 tm.tm_wday = (i+1) % 7;
958 wcsftime(buf, sizeof(buf), L"%a", &tm);
959 for (len = 2; len > 0; --len) {
960 if ((width = wcswidth(buf, len)) <= 2)
963 wmemset(wds->names[i], L'\0', 4);
965 wds->names[i][0] = L' ';
966 wcsncat(wds->names[i], buf, len);
967 wcsncat(wds->names[i], L" ", 1);
972 * Compute the day number of the first existing date after the first day in
973 * month. (the first day in month and even the month might not exist!)
976 firstday(int y, int m)
987 if ((dt.m >= m && dt.y == y) || dt.y > y)
996 * Compute the number of days from date, obey the local switch from
997 * Julian to Gregorian if specified by the user.
1000 sndaysr(struct date *d)
1004 if (nswitch < ndaysj(d))
1013 * Compute the number of days from date, obey the switch from
1014 * Julian to Gregorian as used by UK and her colonies.
1017 sndaysb(struct date *d)
1020 if (nswitchb < ndaysj(d))
1026 /* Inverse of sndays. */
1028 sdater(int nd, struct date *d)
1032 return (gdate(nd, d));
1034 return (jdate(nd, d));
1037 /* Inverse of sndaysb. */
1039 sdateb(int nd, struct date *d)
1043 return (gdate(nd, d));
1045 return (jdate(nd, d));
1048 /* Center string t in string s of length w by putting enough leading blanks. */
1050 center(char *s, char *t, int w)
1052 char blanks[MAX_WIDTH];
1054 memset(blanks, ' ', sizeof(blanks));
1055 sprintf(s, "%.*s%s", (int)(w - strlen(t)) / 2, blanks, t);
1059 /* Center string t in string s of length w by putting enough leading blanks. */
1061 wcenter(wchar_t *s, wchar_t *t, int w)
1063 char blanks[MAX_WIDTH];
1065 memset(blanks, ' ', sizeof(blanks));
1066 swprintf(s, MAX_WIDTH, L"%.*s%ls", (int)(w - wcslen(t)) / 2, blanks, t);
1071 parsemonth(const char *s, int *m, int *y)
1077 nm = (int)strtol(s, &cp, 10);
1081 ; /* no special action */
1082 } else if (*cp == 'f' || *cp == 'F') {
1085 } else if (*cp == 'p' || *cp == 'P') {
1090 if (nm < 1 || nm > 12)
1096 if (strptime(s, "%B", &tm) != NULL || strptime(s, "%b", &tm) != NULL) {
1104 highlight(char *dst, char *src, int len, int *extralen)
1106 static int first = 1;
1107 static const char *term_so, *term_se;
1110 char tbuf[1024], cbuf[512], *b;
1112 term_se = term_so = NULL;
1114 /* On how to highlight on this type of terminal (if any). */
1115 if (isatty(STDOUT_FILENO) && tgetent(tbuf, NULL) == 1) {
1117 term_so = tgetstr("so", &b);
1118 term_se = tgetstr("se", &b);
1125 * This check is not necessary, should have been handled before calling
1128 if (flag_nohighlight) {
1129 memcpy(dst, src, len);
1134 * If it is a real terminal, use the data from the termcap database.
1136 if (term_so != NULL && term_se != NULL) {
1141 memcpy(dst, term_so, strlen(term_so));
1142 dst += strlen(term_so);
1143 /* the actual text. (minus leading space) */
1146 memcpy(dst, src, len);
1148 /* highlight off. */
1149 memcpy(dst, term_se, strlen(term_se));
1150 *extralen = strlen(term_so) + strlen(term_se);
1155 * Otherwise, print a _, backspace and the letter.
1158 /* skip leading space. */
1165 /* _ and backspace. */
1166 memcpy(dst, "_\010", 2);
1169 /* the character. */